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The mineral sector and economic development in Ghana: A computable general equilibrium analysis. A computable general equilibrium model CGE model is formulated for conducting mineral policy analysis in the context of national economic development for Ghana. It can be used to examine both micro and macro economic impacts of policies associated with mineral investment, taxation, and terms of trade changes, as well as mineral sector performance impacts due to technological change or the discovery of new deposits.
Its economywide structure enables the study of broader development policy with a focus on individual or multiple sectors, simultaneously. After going through a period of contraction for about two decades, mining in Ghana has rebounded significantly and is currently the main foreign exchange earner. Gold alone contributed GHANAMIN is used to investigate the economywide impacts of mineral tax policies, world market mineral prices changes, mining investment, and increased mineral exports.
It is also used for identifying key sectors for economic development. Various simulations were undertaken with the following results: Recently implemented mineral tax policies are welfare increasing, but have an accompanying decrease in the output of other export sectors.
World mineral price rises stimulate an increase in real GDP; however, this increase is less than real GDP decreases associated with price declines. Investment in the non-gold mining sector increases real GDP more than investment in gold mining, because of the former's stronger linkages to the rest of the economy.
Increased mineral exports are very beneficial to the overall economy. Foreign direct investment FDI in mining increases welfare more so than domestic capital, which is very limited. Mining investment and the increased mineral exports since have contributed significantly to the country's economic recovery, with gold mining accounting for 95 percent of the.
Energy and economic considerations for ex-situ and aqueous mineral carbonation. Due to the scale and breadth of carbon dioxide emissions, and speculation regarding their impact on global climate, sequestration of some portion of these emissions has been under increased study.
A practical approach to carbon sequestration will likely include several options, which will be driven largely by the energy demand and economics of operation. Aqueous mineral carbonation of calcium and magnesium silicate minerals has been studied as one potential method to sequester carbon dioxide. Although these carbonation reactions are all thermodynamically favored, they occur at geologic rates of reaction.
Laboratory studies have demonstrated that these rates of reaction are accelerated with increasing temperature, pressure, and particle surface area. Mineral -specific activation methods were identified, however, each of these techniques incurs energy as well as economic costs. An overview of the mineral availability, pretreatment options and energy demands, and process economics is provided.
Full Text Available The paper is devoted to geological exploration planning. The author assesses the current state of such planning, marks its internal inconsistency and inefficiency.
The author proves the system of phased zoning as the basis for the targeted planning of mineral resource development, gives a characteristic of the selected geological and economic areas and mineral centers of economic development in Russia as a result of zoning.
The author substantiates a proposition that concentration of the Federal budget and private investments within the centers of economic development contribute to achieving the goals in question. Mineral resource appraisals and the rise of resource economics ]. How do the earth sciences mediate between the natural and social world? This paper explores the question by focusing on the history of nonfuel mineral resource appraisal from the late nineteenth to the mid twentieth century.
It argues that earth sciences early on embraced social scientific knowledge, i. After , assessing national and global mineral reserves and their "life span" or years of supply became ever more important, scaling up and complementing traditional appraisal practices on the level of individual mines or mining and trading companies.
As a consequence, economic methods gained new weight for mineral resource estimation. Natural resource economics as an own field of research grew out of these efforts. By way of example, the mineral resource appraisal assigned to the U. Truman in is analyzed in more detail.
Natural resource economics and environmental economics might be interpreted as a strategy to bring down the vast and holistically conceived object of geological and ecological research, the earth, to human scale, and assimilate it into social matters. Global establishment risk of economically important fruit fly species Tephritidae. The global invasion of Tephritidae fruit flies attracts a great deal of attention in the field of plant quarantine and invasion biology because of their economic importance.
Predicting which one in hundreds of potential invasive fruit fly species is most likely to establish in a region presents a significant challenge, but can be facilitated using a self organising map SOM , which is able to analyse species associations to rank large numbers of species simultaneously with an index of establishment.
We compare and contrast ranked lists from six countries selected from each continent, and also show that those countries geographically close were clustered together by the SOM analysis because they have similar fruit fly assemblages.
These closely clustered countries therefore represent greater threats to each other as sources of invasive fruit fly species. Finally, we indicate how this SOM method could be utilized as an initial screen to support prioritizing fruit fly species for further research into their potential to invade a region. Minerals on postage stamps: A mix of art, history, economics and geography. Most people would agree that minerals represent some of the most beautiful natural objects known to mankind, especially in the form of precious and semi-precious gemstones.
It is hardly surprising, therefore, that they are often illustrated on stamps. Examples are the fine crystalline forms represented as coloured etchings in the French issue, and the stylized simplicity of the mineral stamps that were part of the Swiss Pro Patria series, issued annually between and I aim in this presentation to introduce the beautiful world of mineral illustrations on stamps.
The talk cannot be comprehensive because of the very large number of minerals and stamps concerned, but it will introduce the range of minerals depicted on stamps, then look in some greater detail at several sets from France, Southern Africa and East Germany.
Minerals become the subject of sets of stamps for many reasons. In many cases, it is part of an attempt by the particular national post office to depict the whole of the natural history of their country in stamp form - a statement of nationality and politics.
The French issue was an example which followed sets of stamps that had already portrayed insects, flowers, trees and birds native to France. We also find that certain countries have produced several sets of stamps to mark the importance to their economy of mining particular minerals.
Countries with traditional links with the history of the study of geology and mining also produce mineral stamps. These are usually European countries with a long record of the study of the Earth, such as Germany and Switzerland. Curiously enough, though, despite its fine tradition of geological observation and research. Quick-start guide for version 3. It is based upon a simulation program developed by Root and others , who discussed many of the methods and algorithms of the program.
Scott, and Lawrence J. The current version 3. However, the cost algorithms used in the disabled economic filters are still in the program and available for reference for mining methods and milling techniques included in Camm The program works only on Microsoft Windows XP or newer. Full Text Available Several mycotoxins are produced by aspergilli, which contaminate our foods and feeds.
Economically the most important of these mycotoxins are aflatoxins, ochratoxins and patulin. Recent studies indicate that these compounds can be produced by a number of unrelated Aspergillus species.
Evolutionary relationships among sections involving these mycotoxin producing species Aspergillus sections Circumdati, Flavi, Nigri, Fumigati and Clavati were evaluated using phylogenetic analysis of -tubulin and ribosomal RNA gene sequences. Phylogenetically unrelated species were found to produce the same mycotoxins.
For example, aflatoxins have been produced under laboratory conditions by species belonging to three different sections, while ochratoxin A OA and patulin have been produced by a variety of unrelated species. Based on this observation, mycotoxin-producing abilities of the isolates were lost or gained several times during the evolution of the genus. Previous studies revealed that biosynthetic genes of several mycotoxins are clustered in the genome, leading to the idea that these clusters could be horizontally transferred as a unit to unrelated species , leading to the biosynthesis of the same mycotoxins in phylogenetically unrelated fungi.
Such a mechanism could also explain the widespread occurrence of ochratoxin and patulin production in aspergilli.
The organisation of biosynthetic genes of patulin and ochratoxins is unknown. Research is in progress in our laboratory to clarify the genetic background of biosynthesis of these mycotoxins, and to develop biosynthetic gene based probes for the molecular detection of these mycotoxin producing organisms.
The present study determined in detail the diversity and structure of bacterial communities associated with different mineral types incubated for 2.
Our data showed an enrichment of specific bacterial taxa on the minerals , specifically on the most weathered minerals , suggesting that they play key roles in mineral weathering and nutrient cycling in nutrient-poor forest ecosystems.
Geological, mining and mineral economic aspects. Office of Graduate Studies, Fogarty Endowment? Murray Hitzman Economic Geology ; Dr. Hugh Miller Mining Engineering ; Prof. Carbon and nitrogen in forest floor and mineral soil under six common European tree species.
The knowledge of tree species effects on soil C and N pools is scarce, particularly for European deciduous tree species. We studied forest floor and mineral soil carbon and nitrogen under six common European tree species in a common garden design replicated at six sites in Denmark.
Three groups were identified: There were significant differences in forest floor and soil C and N contents X-ray diffraction XRD and Fourier infrared absorption spectroscopy FTIR were conducted to deepen our research on specific species and spectral characteristics of swelling clay minerals in the Pliocene sandstones in Xinghai, Qinghai province.
XRD patterns show reflections of the samples occur both remarkably at 1. Further treatment of Li degrees C heat and glycerol saturation shows the swelling clay minerals collapse to 9. This indicates the swelling clay minerals dominate montmorillonite and contain minor saponite.
FTIR results show the samples are composed of a kind of phyllosilicate with absorbed and structural water, which is in agreement with the results of XRD. Absorbed peaks at , , cm -1 , corresponding to OH associated with Al-Al, Al-Mg, and Al-Fe pairs, further indicates the minerals are dominant dioctahedron in structure.
Meanwhile, absorbed peaks at and cm -1 , corresponding to coupled Si-O and Al-O-Si deformation, indicates parts of Si is replaced by Al in tetrahedron. The spectral characteristics of the samples are against the presence of beidellite and nontronite based on the results of XRD and FTIR, while demonstrating an,existence of montmorillonite. This study, to distinguish the specific species of swelling clay species in clay minerals , would be of great importance when using clay mineralogy to interpret provenance and climatic information.
Socio- economic and health status of sandstone miners: Full Text Available Background: This study is carried out with aims to assess socio- economic and health status of the miners in Sorya Village of Karauli district of Rajasthan, India. Mining has always been among the most hazardous of occupations and rapidly increasing demand for metal and minerals to meet the demand for growing infrastructure has greatly increased the importance of mining.
The quarrying and crushing are carried out in many parts of India and majority of stone mines are unorganized. A cross sectional study was conducted among miners in Sorya village, Karauli during 20 to 30 May Average ages of miner were 41 and average household sizes of the miners were six. Average monthly incomes of them were Rs. One of the reasons of debt was father died in debt and carried forward to the children.
Seventy-seven percent of miners belong to lower caste and rest of them belongs to other backward class. Average BMI of miners was From the study, it can be concluded that one reason for miner 's indebtedness is father carry forward.
Sandstone mining leads to Silicosis, TB and body pain and musculoskeletal disorder. Large sample size studies will give a clearer picture that will helpful in policy implication for more than 2.
Assessing the addition of mineral processing waste to green waste-derived compost: The secondary aims were to evaluate the influence of mineral waste type on plant growth performance and to undertake a simple economic analysis of the use of mineral -compost mixtures in land restoration.
Our results showed that in comparison to organic wastes, mineral wastes contained a low available nutrient content which reduces compost quality. This is supported by growth trials with tomato, wheat and grass which showed that, irrespective of mineral source, plants performed poorly in compost blended with mineral waste in comparison to those grown in green waste or peat-based compost alone.
In terms of consumer confidence, unlike other wastes e. In addition, handling of the material can be difficult under wet conditions and effective blending may require the purchase of specialist equipment.
From our results, we conclude that mineral fines may prove useful for low quality, low value landscaping activities close to the source of production but are unsuited to high value markets.
Comprehensive multifactorial analysis of chronic infections of skin of miners and method for calculating economic effect of health measures. Goal of study is complex evaluation of occurrence and extent of pyodermatitits and mycosis of feet in underground workers of a Ukrainian coal mine and development of simple mathematical models for calculating economic damage caused by lost work time and economic cost of treating and implementing measures to reduce disease among miners.
Characterization of level of disease of miners with and without loss of work capacity can be obtained from analysis of extent, recurrence, and loss of work capacity of contingent of men examined. The characteristics are related to age, experience and type of occupational activity of miners. Highest incidence of disease occurs in young, unadapted, and inexperienced workers; the next highest incidence is found in people of prepension and pension age.
Highest incidence of disease with loss of time from work is found among mining technicians. Technically simple mathematical models for calculating economic loss as a result of disease of miners with chronic infections of the skin and for evaluating economic effects of massive health improvement measures are offered.
These models may be used for analysis of other forms of illness in miners. Complementarity in mineral nitrogen use among dominant plant species in a subalpine community. The underlying mechanisms that enable plant species to coexist are poorly understood. Complementarity in resource use is among the major mechanisms proposed that could favor species coexistence but is insufficiently documented.
In alpine soil, low temperatures are a major constraint for the supply of plant nitrogen. NO 3 - or temporal complementarity. The Poaceae took up much more 15 N per soil area unit than the ericaceous species , and all species displayed three major strategies in exploiting 15 N: Together, such ionic and temporal complementarity would reduce competition between species and could be a major mechanism promoting species diversity.
Economic geology is a highly interdisciplinary field utilizing a diverse set of petrologic, geochemical, geophysical, and tectonic data for improved scientific understanding of element migration and concentration in the crust ore formation. A number of elements that were once laboratory curiosities now figure prominently in new energy technologies e.
If widely deployed, such technologies have the capacity to transform the way we produce, transmit, store, and conserve energy. To meet domestic and worldwide renewable energy needs these systems must be scaled from laboratory, to demonstration, to widespread deployment.
Such technologies are materials intensive. If widely deployed, the elements required by these technologies will be needed in significant quantities and shortage of these "energy critical elements" could significantly inhibit the adoption of otherwise game changing energy technologies. It is imperative to better understand the geology, metallurgy, and mining engineering of critical mineral deposits if we are to sustainably develop these new technologies.
There is currently no consensus among federal and state agencies, the national and international mining industry, the public, and the U. Available federal funding for critical elements focuses on downstream areas such as metallurgy, substitutions, and recycling rather than primary deposits. Undertaking the required research to discover and mine critical element deposits in an environmentally friendly manner will require significant partnering with industry due to the current lack of federal research support.
Metals, minerals , coal and hydrocarbons—Introduction to formation and sustainable exploitation of mineral deposits. This volume, available in both hardcover and paperback, is an English translation of the fifth edition of the German language text Mineralische und Energie-Rohstoffe.
The book provides an extensive overview of natural resources and societal issues associated with extracting raw materials. The comprehensive list of raw materials discussed includes metals, industrial minerals , coal, and hydrocarbons. The book is divided into four parts: Each chapter begins with a concise synopsis and concludes with a summary that contains useful suggestions for additional reading.
All figures are grayscale images and line drawings; however, several have been grouped together and reproduced as color plates. Also included is a companion website www. Full Text Available The possible changes in the mineral composition of food during frying could be the consequence of losses by leaching, or changes in concentrations caused by exchanges between the food and culinary fat of other compounds.
The net result depends on the type of food, the frying fat used and the frying process. Moreover, the modifications that frying produces in other nutrients could indirectly affect the availability of dietary minerals.
The most outstanding ones are those that can take place in the fat or in the protein. With respect to the interactions between frying oils and minerals , we have recent knowledge concerning the effects of consuming vegetable oils used in repeated fryings of potatoes without turnover, on the nutritive utilization of dietary minerals.
The experiments have been carried out in pregnant and growing rats, which consumed diets containing, as a sole source of fat, the testing frying oils or unused oils. Magnesium absorption from diets containing frying oils tends to increase but the urinary excretion of this element increases, resulting imperceptible the variations in the magnesium balance. The urinary excretion of Zn also increased although its balance remained unchanged.
Different studies referring to the effects of consuming fried fatty fish on mineral bioavailability will also be presented. On one hand, frying can cause structural changes in fish protein, which are associated with an increase in iron absorption and a decrease in body zinc retention. The nutritive utilization of other elements such as magnesium, calcium and copper seems to be unaffected.
On the other hand; it has been described that an excess of fish fatty acids in the diet produces iron depletion, but when fatty. An economic analysis of the Jim Bridger Power Plant carbon dioxide mineralization process. Concerns for rising levels of CO2 in the atmosphere have lead to a myriad of schemes to reduce emissions.
Many of these are complicated, expensive, and untried. Coal-fired electrical generation accounts for about 49 percent of U. Shifting generation capacity away from coal is the goal of many, yet as this statistic shows, the U.
What is needed is a way to retrofit existing coal fired power plants to mitigate at least some of the giga-tonnes of CO2 released annually. Carbon Capture and Storage in association with greenhouse gases are a major concern in the world today. This thesis is an outgrowth of a research partnership between the University of Wyoming and the Jim Bridger Power Plant Rocky Mountain Power to develop a process for capture and mineralization of flue gas carbon dioxide CO 2 using an accelerated mineral carbonization process with fly ash particles as the absorbent.
This process may have several advantages over other approaches because it is an environmentally acceptable, single step process occurring at near ambient pressures and temperatures that can compliment conventional CCS processes. In addition the use of fly ash particles as an absorbent avoids the costs of processing or engineering an absorbent. The purpose of this thesis is to evaluate the capture costs and economic feasibility of the mineralization process.
The first was a cost of capture model which was used to estimate CO2 capture costs and how changes in the CO2 to ash capture ratio and quantities of CO2 captured affect capture costs.
The second was a financial feasibility model which considered the time value of money. This second model considered the net present value NPV and internal rate of return IRR for the process using different pricing scenarios. Calcium mineralization in the forest floor and surface soil beneath different tree species in the northeastern US.
Calcium Ca is an important element for neutralizing soil acidity in temperate forests. The immediate availability of Ca in forested acid soils is largely dependent on mineralization of organic Ca, which may differ significantly among tree species.
I estimated net Ca mineralization in the forest. Full Text Available The article brings forth the geological- economic analysis of the mineral resource in the area of the transport corridor "Urals industrial — Urals Polar".
Given is the analysis of the potential finding of coal on the territory, chromate and other important excavations, the whereabouts of which are more easily approachable for the acquiring with the condition of building a railroad with the path of station Polunochnoye-Obskaya. Given are the possible masses of the delivery of the products accordingly.
Distinguished is the size of the investments, that are needed for the mineral resources of the given territory. Novel evidence for within- species leaf economics spectrum at multiple spatial scales. Full Text Available Leaf economics spectrum LES, characterizing covariation among a suite of leaf traits relevant to carbon and nutrient economics , has been examined largely among species but hardly within species.
In addition, very little attempt has been made to examine whether the existence of LES depends on spatial scales. To address these questions, we quantified the variation and covariation of four leaf economic traits specific leaf area, leaf dry matter content, leaf nitrogen and phosphorus contents in a cosmopolitan wetland species Phragmites australis at three spatial inter-regional, regional and site scales across most of the species range in China.
The species expressed large intraspecific variation in the leaf economic traits at all of the three spatial scales. It also showed strong covariation among the four leaf economic traits across the species range.
The coordination among leaf economic traits resulted in LES at all three scales and the environmental variables determining variation in leaf economic traits were different among the spatial scales.
A historical perspective on the economics of the ownership of mineral rights ownership. Inauguration of the new political dispensation in South Africa, initiated a dynamic period in the historical development of its minerals policy.
The Green Paper on a Minerals and Mining Policy for South Africa released for public discussion in February , calls for radical transformation in mineral rights ownership. A shift towards exclusive state ownership of mineral rights, away from the present dual system of private and state ownership, is the most significant proposal. The current holders of mineral rights, or their nominees, who lawfully enjoyed security of tenure under past and present mineral laws are opposed to this transformation because mineral rights were often acquired at considerable cost.
The situation is compounded by poor public record-keeping and passive mineral rights administration over a very long period.
One cannot plan for the future without considering the past. A new genus and species of leaf miner Lepidoptera, Gracillariidae for Chile associated to the native tree Lithraea caustica. Full Text Available A new genus and species of leaf miner Lepidoptera, Gracillariidae for Chile associated to the native tree Lithraea caustica.
Aspects of the life cycle, adult and larval morphology, development and feeding habits of the new genus and species are also presented. We emphasise the uniqueness and importance of this new species for broadening the current knowledge on the Chilean fauna of Gracillariidae.
Sexual dimorphism in livestock species selected for economically important traits. Heide, van der E. Most breeding companies evaluate economically important traits in males and females as a single trait, assuming genetic correlation of 1 between phenotypes measured in both sexes. This assumption may not be true because genes may be differently expressed in males and females. Bioavailability of cadmium adsorbed on various oxides minerals to wetland plant species Phragmites australis.
The bioavailability of heavy metals strongly depends on their speciation in the environment. The effect of different chemical speciations of cadmium ions i. Goethite, magnetite, gibbsite, alumina, and manganese oxide were chosen as representatives of metal hydr oxides commonly present in sediment. The cultivar system with Hoagland solution as nutrition supply, and single metal oxide with adsorbed Cd as contaminant was applied to study Cd accumulation by P.
The bioaccumulation degree in root after the day treatment followed the order: The concentration of Cd in stem and leaf followed a similar order although it was considerably lower than that in root. Low-molecular-weight organic acids LMWOAs , acetic acid, malic acid and citric acid were used to evaluate the desorbability of Cd from different oxides, which can be indicative of Cd-oxide bonding strength and Cd bioavailability.
Desorption of Cd by acetic acid and malic acid followed the order: This was consistent with the Cd accumulation degree in the plant. Economic essays on marine invasive species and international fisheries agreements. This thesis is divided into two parts, as explained in Chapter 1, which focus on different aspects of marine ecological change.
The detrimental consequences of invasions for human welfare. We apply a spatial dynamic model to find the optimal joint management of international invasive species threats with historic management of the Red King Crab by Norway and Russia The detrimental consequences of invasions for human welfare n. Trees of Laos and Vietnam: This field guide to economically or ecologically important tree species from Laos and Vietnam enables the user to identify the included taxa with user-friendly keys.
It includes scientific names, botanical descriptions of families, genera, and species. Specific information on distribution, habit. Elevated tropospheric ozone affects the concentration and allocation of mineral nutrients of two bamboo species. The increase in tropospheric ozone O3 affects plant physiology and ecosystem processes, and consequently the cycle of nutrients.
While mineral nutrients are critical for plant growth, the effect of elevated tropospheric O3 concentration on the uptake and allocation of mineral nutrients by plants is not well understood.
Using open top chambers OTCs , we investigated the effect of elevated O3 on calcium Ca , magnesium Mg and iron Fe in mature bamboo species Phyllostachys edulis and Oligostachyum lubricum. Our results showed that elevated O3 decreased the leaf biomass of P. In contrast, elevated O3 increased the nutrient concentration and allocation in the branch of O.
We also found that that P. This information is critical for nutrient management and adaptation strategies for sustainable growth of P. Comparative assessment of mineral elements and heavy metals accumulation in vegetable species. Full Text Available The heavy metal cadmium, lead, nickel, chromium and mineral element potassium, phosphorus, calcium, magnesium levels in edible parts of tomato, potato, spinach, beetroot, parsley, parsnip, carrot, cauliflower, pepper and broccoli were determined by atomic absorption spectrophotometry.
Six samples for each species originating from different localities were collected from green markets. The highest mean levels of the heavy metals, as well as of potassium, calcium and magnesium, were found in spinach. A large number of samples containing high levels of toxic heavy metals, especially of cadmium and lead, impose the necessity for strict regulative guidelines concerning individual vegetable crops production, harvest, handling and storing, in order to diminish possibility of contamination.
By use of Bernstein operational matrix and its stochastic operational matrix we convert stochastic SIR model to a nonlinear system that can be solved by Newton method. Finally, a test problem of SIR model is presented to illustrate our mathematical findings. Three airlifted liquid samples and a steam jetted slurry sample were obtained for quantitative analysis and characterization of WM liquid phase SBW and tank heel sludge. Estimates were provided for most of the reported data values, based on the greater of a analytical uncertainty, and b variation of analytical results between nominally similar samples.
A consistency check on the data was performed by comparing the total mass of dissolved solids in the liquid, as measured gravimetrically from a dried sample, with the corresponding value obtained by summing the masses of cations and anions in the liquid, based on the reported analytical data. After reasonable adjustments to the nitrate and oxygen concentrations, satisfactory consistency between the two results was obtained.
A similar consistency check was performed on the reported compositional data for sludge solids from the steam jetted sample. In addition to the compositional data, various other analyses were performed: WM characterization results were compared with those for WM , and other Tank Farm Facility tank characterization data.
A 2-liter batch of WM simulant was prepared and a clear, stable solution was obtained, based on a general procedure for mixing SBW simulant that was develop by Dr. Rates of computational errors for scoring the SIRS primary scales. We note that mistallied scores on psychological tests are common, and we review some strategies for reducing scale score errors on the SIRS.
The material and the calculation are cut up into a series of atomic slices, and the electronic structure solved without approximation in each slice. Being two-dimensional, this was much more manageable than a full three-dimensional calculation. Then the slices could be put together by a sort of perturbation theory to calculate the scattering current as a function of energy along each of the reciprocal lattice 'rods' allowed by the surface periodicity.
John didn't just stop at having solved the problem in principle, he also developed a suite of computer codes to do the job in a routine way. He even published the code for all to use, and I believe that to the present day the calculations are still done effectively in the same way. Without the calculations, one cannot interpret the data in terms of a surface atomic structure.
Effectively one is doing a computer experiment in parallel to the laboratory experiment, and one fiddles more or less systematically with the surface structure until one gets agreement between the simulations and the laboratory data. One of the things that John noticed was that the process of photoemission UPS from a surface is rather similar, and can be calculated in an analogous way. This suddenly became very important because the new synchrotron at Daresbury was about to become operational, pumping out billions of photons for solid state research.
With that foresight, unusual at the time, John Pendry was appointed to head the theory group at Daresbury.
Previously the theoreticians had revolved around the nuclear physics accelerator, and John had to turn it completely around and refocus it, which he did. Attentional WM is not necessarily specifically related with fluid intelligence: Executive functions and, in particular, Attentional active Working Memory WM have been associated with fluid intelligence. The association contrasts with the hypothesis that children with ADHD exhibit problems with WM tasks requiring controlled attention and may have a good fluid intelligence.
The latter result would be problematic for theories assuming the generality of a strict relationship between intelligence and WM. To study these issues, a battery of tests was administered to a group of 58 children who all displayed symptoms of ADHD.
All children were between the age of 8 and 11 years, and were described by their teachers as smart. Children were compared to a control group matched for age, schooling, and gender.
The battery included a test of fluid intelligence Raven's Coloured Matrices , and a series of visuospatial WM tasks. Results showed that children with ADHD were high in intelligence but significantly lower than the controls in WM tasks requiring high attentional control, whereas there was no difference in WM tasks requiring low attentional control.
Furthermore, only high attentional control WM tasks were significantly related to Raven's performance in the control group, whereas all WM tasks were similarly related in the ADHD group. It is concluded that performance in high attentional control WM tasks may be related to fluid intelligence, but also to a specific control component that is independent of intelligence and is poor in children with ADHD.
The rod fiber is thoroughly tested to record the transverse modal instability TMI behavior and also me The transfer of an exemption does not require Commission approval. Kellogg Airport, Battle Creek Administration FAA announces its determination that the noise exposure maps submitted by the City of Battle Company; Filing of Color Additive Petition.
Company; Filing of Color Company, proposing that the color additive regulations be amended to expand the use of Oscillations in SIRS model with distributed delays.
The ubiquity of oscillations in epidemics presents a long standing challenge for the formulation of epidemic models. Whether they are external and seasonally driven, or arise from the intrinsic dynamics is an open problem. It is known that fixed time delays destabilize the steady state solution of the standard SIRS model, giving rise to stable oscillations for certain parameters values.
In this contribution, starting from the classical SIRS model, we make a general treatment of the recovery and loss of immunity terms. We present oscillation diagrams amplitude and period in terms of the parameters of the model, showing how oscillations can be destabilized by the shape of the distributions of the two characteristic infectious and immune times. The formulation is made in terms of delay equations which are both numerically integrated and linearized.
Results from simulations are included showing where they support the linear analysis and explaining why not where they do not. Considerations and comparison with real diseases are presented along. In , the development of a medical brief, effectively detailing the specifications for a purpose-built oncology hospital and including the medical equipment and human resources required, was commenced. Robust engagement by the relevant stakeholders, many of which hailed from the extant Sir Paul Boffa Hospital, ensured a very relevant proposal.
A simple, mild and effective procedure is reported to the generation of 2-tetrahydropyranyl acetals from alco-hols. Keggin and Wells- Dawson heteropolyoxometalates were used as catalysts at ambient temperature in acetone as solvent with good yields and high selectivities in a short reaction time. Different reaction parameters affecting ef-ficiency of the protocol were also studied.
The use of these acid catalysts allows replacing the usual soluble inor-ganic acids, contributing to waste reduction. SIR -B experiments in Japan. Among the test sites for the SIR -B calibration experiment, the Sarobetsu test site was successfully imaged twice on ascending and descending orbits. The SIR -B image data taken over the test site are analyzed to calibrate the image and to estimate the 3-dB resolution. Square trihedral corner reflectors with different radar cross sections RCS are used to relate the image data number to RCS.
The RCS of the background surface is estimated and its effect is also included in these relations. The 3-dB resolutions are estimated by two independent techniques. The results of these two techniques agree with each other; however, the estimated resolutions are larger than those predicted by the Jet Propulsion Laboratory.
The estimates should be regarded as the image resolutions rather than representing the sensor characteristics. Corner reflectors m apart can be recognized on the image, while those m apart seem a single target. The SIR -B image of targets 25 m or more apart is confirmed to be the sum of the individual target responses.
The backscattering signal from a target does not correlate with another target over 25 m away. To assess the clinical and demographic profile of Systemic Inflammatory Response Syndrome SIRS and sepsis, among newly admitted children in different age groups in a hospital in North India.
This prospective study was conducted at a referral care centre in Northern India. All children, age group 0 to SIRS and sepsis and to gain clinical and demographic data. During the study period, a total of patients were screened for SIRS. Out of the latter 30, 19 had septic shock. Mean duration of antibiotic therapy and hospital stay in the SIRS group were 6. In the group without SIRS , mean duration were 2. In conclusion, the proportion of sepsis contributing to SIRS is high in a tertiary care hospital.
Therefore rapid recognition of SIRS is essential. Goal directed treatment of sepsis is also important so that high mortality associated with severe sepsis and septic shock are prevented. The sir A gene of Salmonella enterica serovar Typhimurium encodes a two-component response regulator of the FixJ family that has a positive regulatory influence on the expression of type III secretion genes involved with epithelial cell invasion and the elicitation of bovine gastroenteritis.
Sir A orthologs in Pseudomonas, Vibrio, and Erwinia control the expression of distinct virulence genes in these genera, but an evolutionarily conserved target of Sir A regulation has never been identified.
Application of SIR epidemiological model: The simplest epidemiologic model composed by mutually exclusive compartments SIR susceptible-infected-susceptible is presented to describe a reality. From health concerns to situations related with marketing, informatics or even sociology, several are the fields that are using this epidemiological model as a first approach to better understand a situation. In this paper, the basic transmission model is analyzed, as well as simple tools that allows us to extract a great deal of information about possible solutions.
A set of applications - traditional and new ones - is described to show the importance of this model. An epidemiological model of the dynamics of Japanese Encephalitis J. The basic reproductive rate R 0 in the coupled system has been worked out. Using Aron's results cf. Mutu dari karet remah sangat dipengaruhi oleh adanya konsentrasi zat menguap sebagai salah satu parameter penentuan kualitas karet remah yang dihasilkan. Analisa perbandingan sangat efektif dilakukan dalam menentukan kualitas karet remah bermutu paling baik berdasarkan klasifikasi antara mutu SIR 20 dengan mutu SIR 3WF.
Parameter yang digunakan adalah mengetahui konsentrasi zat menguap yang lebih besar atau lebih kecil berdasarkan Standard Indonesian Rubber SIR yang telah ditentukan. Europium III provides the unique opportunity to employ luminescence spectroscopy and multinuclear NMR to probe the coordination environment.
We provide evidence toward the fractional displacement and coordination of acetonitrile within the TBA salts, that is consistent with recent EXAFS data. Determination of the number of bound waters q is also consistent with acetonitrile-water exchange. The reactivity of the 1: Binding constants for the products 1: A criterion groups comparison. The new test has since been criticized for several potential problems, particularly in terms of its sensitivity to feigned psychopathology.
For this reason, the purpose of this study was to examine the concordance between SIRS and SIRS -2 classifications and sensitivity estimates in an archival sample of criminal defendants males, 48 females who were admitted to a high-security state psychiatric hospital for restoration of competency to stand trial. In a subgroup of 39 presumed feigning patients who elevated 1 or more collateral measures of feigning primarily the M-FAST at conservative cutoffs, we found marked discrepancies between the sensitivity of the SIRS.
Follow-up analyses of intercorrelations and percentile distributions indicated that the new SIRS -2 scales may lack utility in the assessment of feigning because of problems relating to the construct validity of the scales and their interpretive cutoffs. Future directions in research and clinical practice are discussed, with added emphasis on the significant limitations of archival pretrial forensic samples for identifying presumed genuine groups necessary to calculate specificity estimates which were meaningfully higher for the SIRS -2 in this sample.
Overall, the primary clinical implication is that feigning should remain a strong consideration in SIRS -2 cases yielding an indeterminate classification.
Matrine, a sophora alkaloid, has been demonstrated to exert antitumor effects on many types of cancer. However, its bioactivity is weak and its potential druggability is low. We modified the structure of matrine and obtained a new matrine derivative, WM C30N4H40SO5F , which exhibited better pharmacological activities than matrine. In this study, we investigated the antitumor activity and the underlying mechanisms of WM on hepatocellular carcinoma HCC cells in vitro and in vivo, and found that WM inhibited the proliferation, invasion, migration and induced apoptosis of HCC cells in a dose-dependent manner.
Moreover, WM inhibited Huh-7 xenograft tumor growth in a dose-dependent manner after intravenous administration. Sir 2 and calorie restriction in yeast: Activation of Sir 2-family proteins in response to calorie restriction CR has been proposed as an evolutionarily conserved mechanism for life span extension.
This idea has been called into question with the discovery that Sir 2-family proteins are not required for life span extension from CR in yeast. We present here a historical perspective and critical evaluation of the model that CR acts through Sir 2 in yeast, and interpret prior reports in light of more recent discoveries. Several specific cases where the Sir 2 model of CR is inconsistent with experimental data are noted. These shortcomings must be considered along with evidence supporting a role for Sir 2 in CR in order to fully evaluate the validity of this model.
Bass- SIR model for diffusion of new products. We consider the diffusion of new products in social networks, where consumers who adopt the product can later "recover" and stop influencing others to adopt the product.
We show that the diffusion is not described by the SIR model, but rather by a novel model, the Bass- SIR model, which combines the Bass model for diffusion of new products with the SIR model for epidemics. The phase transition of consumers from non-adopters to adopters is described by a non-standard Kolmogorov-Johnson-Mehl-Avrami model, in which clusters growth is limited by adopters' recovery.
Therefore, diffusion in the Bass- SIR model only depends on the local structure of the social network, but not on the average distance between consumers. Consequently, unlike the SIR model, a small-worlds structure has a negligible effect on the diffusion.
Surprisingly, diffusion on scale-free networks is nearly identical to that on Cartesian ones. I report the discovery of nine new variable stars in Cygnus: Not only was Sir Francis Galton a famous geographer and statistician, he also invented "eugenics" in Eugenics, defined as the science of improving racial stock, was developed from a new heredity theory, conceived by Galton himself, and from the evolution theory of Charles Darwin, transposed to human society by Herbert Spencer.
Galton's eugenics was a program to artificially produce a better human race through regulating marriage and thus procreation. Galton put particular emphasis on "positive eugenics", aimed at encouraging the physically and mentally superior members of the population to choose partners with similar traits.
In , he presented his ideas in front of a vast audience of physicians and scientists in London. His widely-publicized lecture served as the starting point for the development of eugenics groups in Europe and the United States during the first half of the 20th century. Sir William Ramsay and the noble gases. Sir William Ramsay was one of the world's leading scientists at the end of the 19th century, and in a spectacular period of research between and , he discovered five new elements.
These were the noble gases, helium, neon, argon, krypton, and xenon; they added a whole new group to the Periodic Table of the elements, and provided the keystone to our understanding of the electronic structure of atoms, and the way those electrons bind the atoms together into molecules.
For this work he was awarded the Nobel Prize in Chemistry in , the first such prize to come to a British subject. He was also a man of great charm, a good linguist, and a composer and performer of music, poetry and song.
This review will trace his career, describe his character and give and account of the chemistry which led to the award of the Nobel Prize. Working memory, text comprehension, and propositional reasoning: In order to check the validity of this new Working Memory WM task, we used the same reasoning task used in the previous study as well as a new reading comprehension test.
The results show the tight relationship amongst working memory, reading comprehension and reasoning, and confirm the validity of the new WM measure. Influence of Keggin and Wells- Dawson polyanions on the structure. In 3, two kinds of 1D metal-organic chains are connected by SiW12 clusters to construct a 3D framework.
In addition, the electrochemistry properties of compounds have been studied. The relationship between SIRS symptoms and morbidity and mortality in medical emergency ward patients is unknown. We conducted a prospective cohort study of the frequency of SIRS and its relationship to sepsis and death among acutely hospitalised medical patients.
In consecutive patients, SIRS status SIRS patients were Serum levels of osteopontin are increased in SIRS and sepsis. In sepsis, dysregulation of the immune response leads to rapid multiorgan failure and death. Accurate and timely diagnosis is lifesaving and should discriminate sepsis from the systemic inflammatory response syndrome SIRS caused by non-infectious agents.
Osteopontin acts as an extracellular matrix component or a soluble cytokine in inflamed tissues. Its exact role in immune response and sepsis remains to be elucidated. Therefore, we investigated the role of osteopontin in SIRS and sepsis. Intensive care unit of a university hospital. Fifty-six patients with SIRS or sepsis and 56 healthy subjects were enrolled.
We analyzed the serum levels of osteopontin and TH1-TH2 cytokines and investigated the role of osteopontin on interleukin 6 secretion by monocytes. Serum osteopontin levels were strikingly higher in patients than in controls and in sepsis than in SIRS , and decreased during the resolution of both the disorders.
Receiver operating characteristic curves showed that osteopontin levels have discriminative power between SIRS and sepsis with an area under the curve of 0. Osteopontin levels directly correlated with those of interleukin 6 and in vitro, recombinant osteopontin increased interleukin 6 secretion by monocytes in both the absence and presence of high doses of lipopolysaccharide. These data suggest that osteopontin might be a mediator involved in the pathogenesis of SIRS and sepsis, possibly by supporting interleukin 6 secretion.
Attention, working memory, and phenomenal experience of WM content: What is the role of top-down attentional modulation in consciously accessing working memory WM content?
In influential WM models, information can exist in different states, determined by allocation of attention; placing the original memory representation in the center of focused attention gives rise to conscious access. Here we discuss various lines of evidence indicating that such attentional modulation is not sufficient for memory content to be phenomenally experienced. We propose that, i Sir A orthologs affect both motility and virulence. In this study we tested the hypothesis that sir A may be an ancient member of the flagellar regulon.
We examined the effect of a sir A mutation on transcriptional fusions to flagellar promoters flhD, fliE, fliF, flgA, flgB, fliC, fliD, motA, and fliA while using fusions to the virulence gene sopB as a positive control. Sir A had only small regulatory effects on all fusions in liquid medium less than fivefold.
However, in various types of motility agar plates, sir A was able to activate a sopB fusion by up to fold while repressing flagellar fusions by values exceeding fold.
Mutations in the sir A orthologs of Escherichia coli, Vibrio cholerae, Pseudomonas fluorescens, and Pseudomonas aeruginosa result in defects in either motility or motility gene regulation, suggesting that control of flagellar regulons may be an evolutionarily conserved function of sir A orthologs. The implications for our understanding of virulence gene regulation in the gamma Proteobacteria are discussed.
This study introduces a novel noninvasive differential photoacoustic method, Wavelength Modulated Differential Photoacoustic Spectroscopy WM -DPAS , for noninvasive early cancer detection and continuous hypoxia monitoring through ultrasensitive measurements of hemoglobin oxygenation levels StO2.
Unlike conventional photoacoustic spectroscopy, WM -DPAS measures simultaneously two signals induced from square-wave modulated laser beams at two different wavelengths where the absorption difference between maximum deoxy- and oxy-hemoglobin is nm, and minimum zero nm the isosbestic point. The two-wavelength measurement efficiently suppresses background, greatly enhances the signal to noise ratio and thus enables WM -DPAS to detect very small changes in total hemoglobin concentration CHb and oxygenation levels, thereby identifying pre-malignant tumors before they are anatomically apparent.
Sensitivity tunability is another special feature of the technology: WM -DPAS can be tuned for different applications such as quick cancer screening and accurate StO2 quantification by selecting a pair of parameters, signal amplitude ratio and phase shift.
Sensitivity comparison between conventional single-ended signal and differential signal. An Interview with Sir Michael Marmot. Health equity through action on the social determinants of health. This interview was conducted by email in May of this year. This was an important affirmation of democratic values. When thinking about health inequalities people often use the analogue of the ladder to show how the gradient of worsening health outcomes affects all people in society except presumably those at the very top.
Thinking about the ladder leads us to pose the following question: Is making the ladder shorter i. All societies have hier-archies. It is not conceivable, therefore, to have a society with no ladder. The conceptual framework of the Commission on Social Determinants of Health leads us to think of at least two linked ways to address the relation between position on the ladder and health: The first argues for reducing the slope of the social gradient.
To see this, suppose, just for a moment, that the ladder were defined on the basis of years of education. People who had three years or fewer had life expectancy of 50 years.
Sir Victor Horsley is considered to be the pioneer of pituitary surgery. He is known to have performed the first surgical operation on the pituitary gland in , and in he stated that he had operated on 10 patients with pituitary tumors. He did not publish the details of these procedures nor did he provide evidence of the pathology of the pituitary lesions operated on.
Four of the patients underwent surgery at the National Hospital for Neurology and Neurosurgery Queen Square, London , and the records of those cases were recently retrieved and analyzed by members of the hospital staff. The remaining cases corresponded to private operations whose records were presumably kept in Horsley's personal notebooks, most of which have been lost. In this paper, the authors have investigated the only scientific monograph providing a complete account of the pituitary surgeries that Horsley performed in his private practice, La Patologia Chirurgica dell'Ipofisi Surgical Pathology of the Hypophysis , written in by Giovanni Verga, Italian assistant professor of anatomy at the University of Pavia.
They have traced the life and work of this little-known physician who contributed to the preservation of Horsley's legacy in pituitary surgery. Within Verga's pituitary treatise, a full transcription of Horsley's notes is provided for 10 pituitary cases, including the patients' clinical symptoms, surgical techniques employed, intraoperative findings, and the outcome of surgery.
The descriptions of the topographical and macroscopic features of two of the lesions correspond unmistakably to the features of craniopharyngiomas, one of the squamous-papillary type and one of the adamantinomatous type. The former lesion was found on necropsy after the patient's sudden death following a temporal osteoplastic craniectomy.
Surgical removal of the lesion in the latter case, with the assumed nature of an adamantinomatous craniopharyngioma, was successful. The first 7,8 -connected polyoxometalate-based metal-organic framework POM-MOF has been constructed from seven- and eight-connected twin Wells- Dawson clusters, and possesses the highest connection number of polyoxometalates to any mixed-connected POM-MOF to date and a unique structural motif that contains both organic-inorganic and all-inorganic networks.
Portrayals by Sir Arthur Conan Doyle. The developments in neuro syphilis in the 19th century are integral parts of the history of psychiatry. The delineation of various aspects of neuro syphilis by Sir Arthur Conan Doyle in three of his stories is discussed in brief. The developments in neuro syphilis in the 19 th century are integral parts of the history of psychiatry.
Psychologists are faced with formidable challenges in making their assessment methods relevant to growing numbers of Hispanic clients for whom English is not the primary or preferred language.
Among other clinical issues, the determination of malingering has profound consequences for clients. Using a between-subjects simulation design, the Spanish SIRS was found to produce reliable results with small standard errors of measurement.
We consider the potential role of the Spanish SIRS with reference to Spanish translations for other assessment instruments. Was Sir William Crookes epistemically virtuous? The aim of this paper is to use Sir William Crookes' researches into psychical phenomena as a sustained case study of the role of epistemic virtues within scientific enquiry.
Despite growing interest in virtues in science, there are few integrated historical and philosophical studies, and even fewer studies focussing on controversial or 'fringe' sciences where, one might suppose, certain epistemic virtues like open-mindedness and tolerance may be subjected to sterner tests.
Using the virtue of epistemic courage as my focus, it emerges that Crookes' psychical researches were indeed epistemically courageous, but that this judgment must be grounded in sensitivity to the motivational complexity and context-sensitivity of the exercise of epistemic virtues. The paper then considers Crookes' remarks on the relationship between epistemic virtuousness and the intellectual integrity and public duties of scientists, thereby placing epistemic virtues in the context of wider debates about the authority of science in late modern societies.
I conclude that Crookes' researches into psychical phenomena offer instructive lessons for historians of science and virtue epistemologists concerning the complexity and contextuality of epistemic virtues, and the profitable forms that future studies of virtues in science could take.
One day, Sir , you may tax it. So what does a 19th century English scientist have to do with the science agenda today? A great deal, I would contend. Faraday was doing basic science, but he had the foresight to realise that through applied research his findings could one day be developed into something taxable — as it turned out, electric light. Faraday had a sense of the potential of his blue-sky research, but he also appreciated that basic science alone is not enough.
This was my key message in Davos. Governments often speak of Sir William Mitchell This was a difficult period for CERN. Financial problems were being faced in many member states, notably in Germany as a result of unification. This led to calls for reductions in the CERN budget and, more significantly, to requests for delays in consderation of future programmes.
On the other hand for the future of CERN and the progress of elementary particle physics, it was necessary The Pragmatics of Sir Thomas Bodley. Full Text Available The publication of the diplomatic correspondence of Sir Thomas Bodley online Diplomatic Correspondence of Thomas Bodley, — offers a fine opportunity to study a text-type that is partly different from either business letters or personal correspondence.
These texts lend themselves to be analysed from a sociopragmatic and discourse-analytic point of view, and this will be attempted in the paper by taking a closer look at the management of conflict, the degree of strength and directness of speech acts, and the ways in which social hierarchy is expressed. Several linguistic markers will be considered, in order to ascertain which elements can be seen as typically sensitive indicators in this particular text type, and how they relate to those found in other types of correspondence from the same period, which has been widely studied.
The history of the 'philosophies of psychiatry' can be defined as the contextualized study of past theoretical views on the nature, understanding and management of madness and related notions. The application of an hermeneutic apparatus to past psychiatric narratives gives rise to the history of psychiatry; its application to current narrative gives origin to the philosophy of psychiatry. If the latter employs off-the-shelf, ready-made, external philosophies, it follows a centripetal approach; if it starts from the inside of psychiatry and generates its own tools and meta-language, it follows a centrifugal approach.
Psychiatry is burdened by intrinsic and extrinsic philosophical problems. The former result from its hybrid nature, i. The latter are borrowed from the conceptual frames into which psychiatry has been inscribed since the 19th century. The philosophy of psychiatry may anticipate or follow empirical research. The ante rem mode is based on the idea that empirical research requires conceptual supervision, audit and guidance, for it is always ideology- and theory-laden.
The post rem mode is based on the view that science is the only way to 'truth' and hence all that the philosophy of psychiatry can or should do is facilitate, interpret, justify, defend or glorify empirical findings. The Classic Text that follows was written by Sir Alexander Crichton at the end of the 18th century, and is a good example of the centripetal mode of philosophy-making.
In contrast to the complex eukaryotic repair system, bacterial NHEJ apparatus consists of only two proteins, Ku and a multifunctional DNA ligase LigD, whose functional mechanism has not been fully clarified. Here, using tandem affinity purification TAP screening, we have identified an NAD-dependent deacetylase in mycobacteria which is a homologue of the eukaryotic Sir 2 protein and interacts directly with Ku.
Plasmid-based end-joining assays revealed that the efficiency of DSB repair in a sir 2 deletion mutant was reduced 2-fold. Our results suggest that Sir 2 may function closely together with Ku and LigD in the nonhomologous end-joining pathway in mycobacteria.
Full Text Available Over the past decade, sepsis has been diagnosed according to consensus guidelines established in as an infection in addition to the symptoms of systemic inflammatory response syndrome SIRS.
In addition to the previous criteria, the conference added several new diagnostic criteria for sepsis.
Of particular interest was the inclusion of the biomarkers procalcitonin PCT and C-reactive protein CRP, despite the overall conclusion that it was premature to use biomarkers for sepsis diagnosis. The immune system has traditionally been devided into innate and adaptive components, each of which has a different role and function in defending the host against infectious agents.
Stimulation of different TLRs induces distinct patterns of gene expression, which not only leads to the activation of innate immunity but also increasing evidence supports an additional critical role for TLRs in orchestrating the development of adaptive immune responses. The superantigens are able to induce toxic shock syndrome and can sometimes cause multiple organ failure via adaptive immune system.
The superantigenic activity of the bacterial exotoxins can be attributed to their ability to cross-link major histocompatibility complex class II molecules on antigen-presenting cells outside the peptide groove with T-cell receptors to form a trimolecular complex. This paper reviews information currently collected by both industry and government sources for this purpose and assesses factors that might affect their usefulness in supporting the academic literature that has relied upon them to draw conclusions about the reliability of the US electric power system.
Medications are perceived as health risk factors, because they might cause damage if used improperly. In this context, an adequate assessment of medication use history should be encouraged, especially in transitions of care to avoid unintended medication discrepancies UMDs. Similarly, in the medical charts of 52 One hundred thirty-seven medical charts of adult patients In other words, there was a lack of basic documentation regarding the patient's medication use history.
As patients move between settings in care, there is insufficient tracking of verbal and written information related to medication changes, which results in a progressive and cumulative loss of information, as evidenced by problems associated with clinical transfers and medication orders. Proper documentation of medication information during transfer is a key step in the procedure; hence, it should be rightly performed.
It remains unclear whether interviews, and other investigations about medication use history have been performed but have not been recorded as health-care data. Space structure vibration modes: Which ones are important? This report attempts to shed some light on the two issues raised in the title, namely, how many vibration modes does a real structure have, and which of these modes are important?
The surprise-free answers to these two questions are, respectively, an infinite number and the first several modes. The author argues that the absurd subspace all but the first billion modes is not a strength of continuum modeling, but, in fact, a weakness. Partial differential equations are not real structures, only mathematical models. This note also explains 1 that the PDE model and the finite element model are, in fact, the same model, the latter being a numerical method for dealing with the former, 2 that modes may be selected on dynamical grounds other than frequency alone, and 3 that long slender rods are useful as primitive cases but dangerous to extrapolate from.
Motivational differences between whole blood and plasma donors already exist before their first donation experience. The demand for plasma products has increased rapidly.
It is therefore important to understand donating behavior by plasma donors. This study investigates whether motivational differences between whole blood and plasma donors already exist at the beginning of a donor career. The questionnaire assessed variables from the Theory of Planned Behavior intention, self-efficacy, attitude, and norms , conscientiousness, and donation anxiety.
Three years later it was determined who became whole blood or plasma donor. Multivariable linear regression analyses for intention were fitted separately for whole blood and plasma donors. A logistic regression analysis was executed to estimate the effect of intention at the beginning of a donor career on becoming a plasma donor. Plasma donors had a higher intention, self-efficacy, attitude, and conscientiousness and a lower anxiety than whole blood donors.
Having a high level of intention increased the odds of becoming a plasma donor odds ratio, 1. Motivational differences already exist between future whole blood and plasma donors before their first donation.
Although a feeling of self-efficacy is necessary for all new donors, more favorable cognitions are important for future plasma donors. Recruitment strategies for plasma donors should focus on attracting the more self-confident donors by highlighting the usefulness of plasma donation.
Minimally important difference estimates and methods: Introduction Patient-reported outcomes PROs are often the outcomes of greatest importance to patients. The minimally important difference MID provides a measure of the smallest change in the PRO that patients perceive as important.
An anchor-based approach is the most appropriate method for MID determination. No study or database currently exists that provides all anchor-based MIDs associated with PRO instruments; nor are there any accepted standards for appraising the credibility of MID estimates. Our objectives are to complete a systematic survey of the literature to collect and characterise published anchor-based MIDs associated with PRO instruments used in evaluating the effects of interventions on chronic medical and psychiatric conditions and to assess their credibility.
Teams of two reviewers will screen titles and abstracts, review full texts of citations, and extract relevant data. On the basis of findings from studies addressing methods to estimate anchor-based MIDs, we will summarise the available methods and develop an instrument addressing the credibility of empirically ascertained MIDs. We will evaluate the credibility of all studies reporting on the empirical ascertainment of anchor-based MIDs using the credibility instrument, and assess the instrument's inter-rater reliability.
We will separately present reports for adult and paediatric populations. Ethics and dissemination No research ethics approval was required as we will be using aggregate data from published studies. Our work will summarise anchor-based methods available to establish MIDs, provide an instrument to assess the credibility of available MIDs, determine the reliability of that instrument, and provide a comprehensive compendium of published anchor.
Patient-reported outcomes PROs are often the outcomes of greatest importance to patients. No research ethics approval was required as we will be using aggregate data from published studies.
Our work will summarise anchor-based methods available to establish MIDs, provide an instrument to assess the credibility of available MIDs, determine the reliability of that instrument, and provide a comprehensive compendium of published anchor-based MIDs associated with PRO instruments which will help.
The clinicopathologic differences in papillary thyroid carcinoma with or without co- existing chronic lymphocytic thyroiditis. The goal of this study is to determine the clinicopathologic differences in patients with papillary thyroid carcinoma PTC with or without chronic lymphocytic thyroiditis CLT.
We reviewed the medical records of consecutive PTC patients who underwent total thyroidectomy and bilateral central lymph node dissection from April to March The differences in clinicopathologic factors, such as age, gender, size of primary tumor, perithyroidal invasion, lymphovascular invasion, capsular invasion, and central lymph node CLN metastasis, were analyzed in PTC patients with or without CLT. Among patients, 56 Also, patients with CLT Compared to patients with PTC without CLT, patients with CLT were younger with a female predominance, which are the most important and well-known prognostic variables for thyroid cancer mortality.
Do Differences in Disciplines Exist? Within existing ICT degrees there is a widely-held belief that content must be tailored for different "kinds" of students--often two differing student groups: Our institution has produced…. To be the first study to consider the difference between men's and women's perceptions of most important mentoring functions.
Survey recipients identified the three most important things that mentors can do for their proteges. Two independent coders categorized the behaviors listed by the respondents. Differences in the methanogen population exist in sika deer Cervus nippon fed different diets in China. Understanding the methanogen structure from sika deer Cervus nippon in China may be beneficial to methane mitigation.
In the present preliminary study, we investigated the methanogen community in the rumen of domesticated sika deer fed either tannin-rich plants oak leaf, OL group or corn stalk CS group using 16S rRNA gene clone libraries. Methanogens related to the genus Methanobrevibacter were the predominant phylotypes representing Methanobrevibacter millerae was the most abundant species in both libraries, but the proportion of M.
Moreover, Methanobrevibacter wolinii-related clones Methanobrevibacter smithii-related clones and Methanobrevibacter ruminantium-related clones accounted for 6. However, these clones were absent from the OL library. The concentrations of butyrate and total short-chain fatty acids SCFAs were significantly higher in the OL group, but the concentrations of acetate, propionate, and valerate and the acetate to propionate ratio in the OL group were not significantly different between the two groups.
Tannin-rich plants may have affected the distribution of genus Methanobrevibacter phylotypes at the species level and the concentration and composition of SCFAs. By employing a nonlinear alternative for contractive maps, we investigate the existence of solutions for a boundary value problem of fractional q- difference inclusions with nonlocal substrip type boundary conditions.
The main result is illustrated with the aid of an example. Existence of solutions with a single semicycle for a general second-order rational difference equation. By making use of inclusion theorem, we show in this paper the existence of solutions with a single semicycle for a general second-order rational difference equation.
As a corollary, our results positively confirm Conjectures 4. The importance of checking for sex differences. Existent research documents an unclear and contradictory pattern between cortisol and personality variables, especially neuroticism. Specifically, no effect, positive correlations and negative correlations have all been reported to exist between cortisol and neuroticism.
The current study tested whether males and females have a fundamentally different relationship between HPA activation and neuroticism and if this might partially account for some of the discrepancy in findings. For women it was negatively correlated. This suggests a slight suppressor effect, explainable by prior research on correlates of oral contraceptive use. Overall, these findings may offer some explanation for the discrepant results that have been reported in the existing literature regarding neuroticism and cortisol measures.
Existence of entire solutions of some non-linear differential- difference equations. In this paper, we investigate the admissible entire solutions of finite order of the differential- difference equations [Formula: In addition, we investigate the non- existence of entire solutions of finite order of the differential- difference equation [Formula: Importance of the different posterolateral knee static stabilizers: PURPOSE The purpose of this study was to evaluate the relative importance of the different static stabilizers of the posterolateral corner of the knee in cadavers.
METHODS Tests were performed with the application of a varus and external rotation force to the knee in extension at 30 and 60 degrees of flexion using 10 cadaver knees. The forces were applied initially to an intact knee and then repeated after a selective sectioning of the ligaments into the following: The parameters studied were the angular deformity and stiffness when the knees were submitted to a 15 Newton-meter varus torque and a 6 Newton-meter external tibial torque.
The popliteofibular complex was the most important structure for external rotation stability at all angles of flexion and was also important for varus stability at 30 and 60 degrees. The posterolateral capsule was important for varus stability at 0 and 30 degrees and for external rotation stability in extension.
Level IV cadaver study. Furthermore, phylogenetic analysis revealed that all PBMC sequences grouped together into a branch which was separate from those of the inoculum. For one of the two chronically infected patients, all the sequences from the PBMC and one from the liver clustered into a single branch while the sequences from the serum and all the other liver sequences grouped together in the other branch.
For the other patient, the sequences from the serum and PBMC and three sequences from the liver grouped together into one branch, while the remaining five sequences from the liver were separated in a different cluster. Fadeout in an Early Mathematics Intervention: Constraining Content or Pre- existing Differences?
A robust finding across research on early childhood educational interventions is that the treatment effect diminishes over time, with children not receiving the intervention eventually catching up to children who did. One popular explanation for fadeout of early mathematics interventions is that elementary school teachers may not teach the kind of advanced content that children are prepared for after receiving the intervention, so lower-achieving children in the control groups of early mathematics interventions catch up to the higher-achieving children in the treatment groups.
We tested these two hypotheses using data from an effective preschool mathematics intervention previously known to show a diminishing treatment effect over time. We compared the intervention group to a matched subset of the control group with a similar mean and variance of scores at the end of treatment. We then tested the relative contributions of factors that similarly constrain learning in children from treatment and control groups with the same level of post-treatment achievement and pre- existing differences between these two groups to the fadeout of the treatment effect over time.
An important difference between "exposed" and "photodistributed" underscores the importance of identifying common reactions. This article presents the case of a patient with rheumatoid arthritis who was referred to dermatology for what was suspected to be a photosensitivity reaction to hydroxychloroquine, a common culprit in photodrug reactions. Despite the patient's insistence to the contrary, the cause of her eruption was an airborne allergic contact dermatitis to chemicals she was exposed to during her longtime hobby of soap-making.
This case serves as an important illustration of the anatomical differences between eruptions occurring in exposed and photodistributed areas. This article also discusses the causes of dermatitis that may mimic photodrug reactions. Impact of blade geometry differences for the CFD performance analysis of existing turbines. Most of those analyses are based on the measurement of a single runner blade. However, due to manufacturing techniques, in-situ modifications or repairs, there are often small differences between individual blades of the same runner.
The impact of this non uniformity was not known thus far and was often assumed to be negligible given the size of the runner. This paper highlights the impact of such differences by presenting the CFD analysis of various blades measured on the same runner. Two different geometries are used for demonstration: Different step-to-step transitions exist during continuous contact brachiation in siamangs. In brachiation, two main gaits are distinguished, ricochetal brachiation and continuous contact brachiation.
During ricochetal brachiation, a flight phase exists and the body centre of mass bCOM describes a parabolic trajectory. For continuous contact brachiation, where at least one hand is always in contact with the substrate, we showed in an earlier paper that four step-to-step transition types occur. We referred to these as a 'point', a 'loop', a 'backward pendulum' and a 'parabolic' transition.
Only the first two transition types have previously been mentioned in the existing literature on gibbon brachiation. In the current study, we used three-dimensional video and force analysis to describe and characterize these four step-to-step transition types. Results show that, although individual preference occurs, the brachiation strides characterized by each transition type are mainly associated with speed.
Yet, these four transitions seem to form a continuum rather than four distinct types. Energy recovery and collision fraction are used as estimators of mechanical efficiency of brachiation and, remarkably, these parameters do not differ between strides with different transition types. We conclude that siamangs have efficient means of modifying locomotor speed during continuous contact brachiation by choosing particular step-to-step transition types, which all minimize collision fraction and enhance energy recovery.
Multi-locus typing of Histomonas meleagridis isolates demonstrates the existence of two different genotypes. Histomonas meleagridis is the aetiological agent of histomonosis or "blackhead disease". Histomonosis is of special importance today, because there is no effective treatment to prevent its occurrence with considerable losses for the poultry industry.
Despite its importance only a few molecular studies have yet been performed to investigate the degree of genetic diversity between different isolates of this parasite.
In the present study a collection of well defined samples, previously shown positive for the DNA of H. Samples originated from 25 turkey flocks collected in France between and Additionally, diagnostic samples, collected at our Clinic in Vienna, from different European countries and Azerbaijan, during to were included in the analyses.
For the analysis three different genetic loci were analyzed: Phylogenetic analyses demonstrated separation of H. The majority of isolates grouped within the cluster 1 and originated from different European countries. The cluster 2 was rare and predominantly found in samples originating from France. Considering that the genetic variability of clusters can be seen as two distinct genetic types we propose the term genotype instead of cluster.
Summary In brachiation, two main gaits are distinguished, ricochetal brachiation and continuous contact brachiation. Similarities are assumed to enhance attraction and empathy; differences are assumed to be related to different possibilities for exchange.
For helping with housework, helping…. Different insulin types and regimens for pregnant women with pre- existing diabetes. Insulin requirements may change during pregnancy, and the optimal treatment for pre- existing diabetes is unclear. There are several insulin regimens e. To assess the effects of different insulin types and different insulin regimens in pregnant women with pre- existing type 1 or type 2 diabetes. We included randomised controlled trials RCTs that compared different insulin types and regimens in pregnant women with pre- existing diabetes.
We had planned to include cluster-RCTs, but none were identified. We excluded quasi-randomised controlled trials and cross-over trials. We included studies published in abstract form and contacted the authors for further details when applicable. Conference abstracts were superseded by full publications.
Two review authors independently assessed trials for inclusion, conducted data extraction, assessed risk of bias, and checked for accuracy.
The findings in this review were based on very low-quality evidence, from single, small sample sized trial estimates, with wide confidence intervals CI , some of which crossed the line of no effect; many of the prespecified outcomes were not reported.
Therefore, they should be interpreted with caution. We included five trials that included women and babies four open-label, multi-centre, two-arm trials; one single centre, four-arm RCT. All five trials were at a high or unclear risk of bias due to lack of blinding, unclear methods of randomisation, and selective reporting of outcomes.
Pooling of data from the trials was not possible, as each trial looked at a different comparison. Managing an academic career in science: What gender differences exist and why? The present study examines the career trajectories of academic scientists during the period from to to explore gender differences in mobility.
Data from the National Science Foundation's Survey of Doctorate Recipients are used to examine and compare gender differences in the odds of promotion. The effects of age, marital and family status, duration of time to complete doctorate, academic discipline, cumulative number of publications and time in the survey are considered as explanatory variables. Event history analyses are conducted for all scientists, for scientists in four major academic disciplines and for scientists in various academic ranks.
While no overall gender differences were observed in the odds of promotion, several important similarities and differences were evident. Expectedly, publications had a significant and positive relationship with advancement for both women and men. The role of parent influenced promotions quite differently for women and men.
Contrary to expectations based on prior research, academic women scientists who were mothers advanced at similar rates as women without children. Consistent with expectations based on traditional roles, married men and men with children generally advanced more quickly than single or childless men, respectively. Two surprising patterns emerged among subgroups of women.
Marriage was associated with greater odds of advancement for women engineers and motherhood was associated with greater odds of advancement for among assistant professors.
Possible explanations for these findings are presented. Brief pain inventory--facial minimum clinically important difference. Neurosurgeons are frequently the primary physicians measuring pain relief in patients with trigeminal neuralgia TN. Unfortunately, the measurement of pain can be complex. It measures 3 domains of pain: The authors conducted a retrospective study of patients with TN seen in a single neurosurgeon's office. Patients completed baseline and 1-month follow-up BPI-Facial questionnaires.
Two statistical methods were employed: The BPI-Facial is a multidimensional pain scale that measures 3 domains of pain. Although 2 statistical methods were used to calculate the MCID, the optimal cutoff point method was the superior one because it used data from the majority of subjects included in this study. The minimal important difference of exercise tests in severe COPD. In order to calculate distribution-based estimates, we used the standard error of measurement, Cohen's effect size and the empirical rule effect size.
Anchor-based estimates for the 6MWD were Purpose Identify and compare predictors of the existence of congregational HIV and other health programs.
Participants A nationally-representative sample of 1, U. Analysis Multinomial logistic regression was used to assess factors that predict congregational health programs relative to no health programs; and of HIV programs relative to other health activities.
Results Most congregations Predictors of health vs. The number of adults in the congregation was a key predictor of health programs, while having an official statement welcoming gay persons was a significant predictor of HIV programs p Analyses of extracellular carbohydrates in oomycetes unveil the existence of three different cell wall types. Some of the most devastating plant and animal pathogens belong to the oomycete class. The cell walls of these microorganisms represent an excellent target for disease control, but their carbohydrate composition is elusive.
We have undertaken a detailed cell wall analysis in 10 species from 2 major oomycete orders, the Peronosporales and the Saprolegniales, thereby unveiling the existence of 3 clearly different cell wall types: We propose a cell wall paradigm for oomycetes that can serve as a basis for the establishment of cell wall architectural models and the further identification of cell wall subtypes. This paradigm is complementary to morphological and molecular criteria for taxonomic grouping and provides useful information for unraveling poorly understood cell wall carbohydrate biosynthetic pathways through the identification and characterization of the corresponding enzymes.
The fibrillation propensity of the multidomain protein human serum albumin HSA was analyzed under different solution conditions. The aggregation kinetics, protein conformational changes upon self-assembly, and structure of the different intermediates on the fibrillation pathway were determined by means of thioflavin T ThT fluorescence and Congo Red absorbance; far- and near-ultraviolet circular dichroism; tryptophan fluorescence; Fourier transform infrared spectroscopy; x-ray diffraction; and transmission electron, scanning electron, atomic force, and microscopies.
HSA fibrillation extends over several days of incubation without the presence of a lag phase, except for HSA samples incubated at acidic pH and room temperature in the absence of electrolyte.
The absence of a lag phase occurs if the initial aggregation is a downhill process that does not require a highly organized and unstable nucleus. These changes also involve the presence of different structural intermediates in the aggregation pathway, such as oligomeric clusters globules , bead-like structures, and ring-shaped aggregates.
We suggest that fibril formation may take place through the role of association-competent oligomeric intermediates, resulting in a kinetic pathway via clustering of these oligomeric species to yield protofibrils and then fibrils. The resultant fibrils are elongated but curly, and differ in length depending on solution conditions.
Under acidic conditions, circular fibrils are commonly observed if the fibrils are sufficiently flexible and long enough for the ends to find themselves regularly in close proximity to each other. Racial Differences in Intelligence: The Importance of the Executive System. The hypothesis that racial differences in IQ stem from differences in components of executive systems including knowledge base, control processes, and metacognition was investigated. Group differences in metamemory, strategy use, and general knowledge, but not perceptual efficiency, were observed.
Metamemory predicted crystallized but not fluid…. ADHD in girls and boys — gender differences in co- existing symptoms and executive function measures. Background ADHD is diagnosed and treated more often in males than in females.
Research on gender differences suggests that girls may be consistently underidentified and underdiagnosed because of differences in the expression of the disorder among boys and girls. The second aim was to delineate specific symptom ratings and measures of EF that were most important in distinguishing ADHD from healthy controls HC of the same gender.
Co- existing symptoms were assessed with self-report scales and parent ratings. The most important distinguishing variable was self-reported anxiety in females, and parent ratings of rule breaking in males. Conclusions Our findings emphasize the combination of. Our team wanted to improve sampling methods for experiments on the thermal properties of martian sediments. We built a robot that could take the data autonomously over a period of days, and then compared them to existing models.
Interpreting the clinical importance of group differences in chronic pain clinical trials: An essential component of the interpretation of results of randomized clinical trials of treatments for chronic pain involves the determination of their clinical importance or meaningfulness. This involves two distinct processes--interpreting the clinical importance of individual patient improvements and the clinical importance of group differences --which are frequently misunderstood.
In this article, we first describe the essential differences between the interpretation of the clinical importance of patient improvements and of group differences.
We then discuss the factors to consider when evaluating the clinical importance of group differences , which include the results of responder analyses of the primary outcome measure, the treatment effect size compared to available therapies, analyses of secondary efficacy endpoints, the safety and tolerability of treatment, the rapidity of onset and durability of the treatment benefit, convenience, cost, limitations of existing treatments, and other factors.
The clinical importance of individual patient improvements can be determined by assessing what patients themselves consider meaningful improvement using well-described methods. In contrast, the clinical meaningfulness of group differences must be determined by a multi-factorial evaluation of the benefits and risks of the treatment and of other available treatments for the condition in light of the primary goals of therapy. Such determinations must be conducted on a case-by-case basis, and are ideally informed by patients and their significant others, clinicians, researchers, statisticians, and representatives of society at large.
Contrasting mechanisms of de novo copy number mutagenesis suggest the existence of different classes of environmental copy number mutagens.
While gene copy number variations CNVs are abundant in the human genome, and often are associated with disease consequences, the mutagenic pathways and environmental exposures that cause these large structural mutations are understudied relative to conventional nucleotide substitutions in DNA.
The members of the environmental mutagenesis community are currently seeking to remedy this deficiency, and there is a renewed interest in the development of mutagenicity assays to identify and characterize compounds that may induce de novo CNVs in humans.
To achieve this goal, it is critically important to acknowledge that CNVs exist in two very distinct classes: The goal of this commentary is to emphasize the deep contrasts that exist between the proposed pathways that lead to these two mutation classes.
Nonrecurrent de novo CNVs originate primarily in mitotic cells through replication-dependent DNA repair pathways that involve microhomologies 10, bp , without an associated paternal age effect. Given the biological differences between the two CNV classes, it is our belief that nonrecurrent and recurrent CN mutagens will probably differ substantially in their modes of action. Therefore, each CNV class may require their own uniquely designed assays, so that we as a field may succeed in uncovering the broadest possible spectrum of environmental CN mutagens.
The importance of understanding individual differences in Down syndrome. In this article, we first present a summary of the general assumptions about Down syndrome DS still to be found in the literature. We go on to show how new research has modified these assumptions, pointing to a wide range of individual differences at every level of description.
Importance of life domains in different cultural groups. This study assessed the role of individualism and collectivism in the shaping of personal values of Canadians, Israelis, and Palestinians. Based on Sagie and Elizur's multifaceted approach, we distinguished personal values that are individual centered i.
The magnitude of the difference between both value types differs according to cultural orientation. As compared with Palestinians, we predicted that Canadians and Israelis would rank individual-centered values higher and collective-centered values lower.
Data obtained from samples of Palestinians, Israelis, and Canadians supported this hypothesis. An Important Part of Me: A Dialogue about Difference. This article is an experiment in writing about and across differences ; it seeks to open up dialogue between adults and young people in childhood and youth studies research. The coauthors, Sofia and Wendy, met through Wendy's longitudinal research project, which explores the roles that gender, race, and immigrant status play in how young people….
Recent years have seen an increased focus on school accountability in Ireland and calls for greater use to be made of student achievement data for monitoring student outcomes.
In this paper, it is argued that existing data-sets in Ireland offer limited potential for the value-added modelling approaches used for accountability purposes in many…. Analysis of novel mycobacteriophages indicates the existence of different strategies for phage inheritance in mycobacteria. Mycobacteriophages have been essential in the development of mycobacterial genetics through their use in the construction of tools for genetic manipulation. Due to the simplicity of their isolation and variety of exploitable molecular features, we searched for and isolated 18 novel mycobacteriophages from environmental samples collected from several geographic locations.
Characterization of these phages did not differ from most of the previously described ones in the predominant physical features virion size in the nm, genome size in the kbp, morphological features compatible with those corresponding to the Siphoviridae family , however novel characteristics for propagation were noticed. Since some of our phages yielded pinpoint plaques, we improved plaque detection by including sub-inhibitory concentrations of isoniazid or ampicillin-sulbactam in the culture medium.
Dan Mathews Glucosamine and Nye casino siderophores functional groups about theCannot Find low price Best pill? naproxen structure functional groups • Trolley service will operate on New Year’s Eve including Rivers Casino 99%(K). Functional groups for organic chemistry flashcards cramcom, study flashcards on Casino Slots Games For Sale Principles Of Oral And Maxillofacial Surgery. Different organisms produce different types of siderophores, and they are categorized on the basis of the iron chelating functional group they possess. Siderophores chelate ferric iron with high affinity typically by virtue of these chelating groups which are generally oxygenated and bind iron to form complexes with great thermodynamic stability.
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