Search Results
Results 201 - 250 of 1238
< 1 2 3 4 5 6 7 8 9 10 >
Zecca Giovanni - - 2011
Wild grapes are woody climbers, found mostly in temperate regions of the northern hemisphere, comprising the genus Vitis. Despite its importance, the evolutionary history of Vitis is still contentious. Past studies have led to conflicting hypotheses about the phylogeny, speciation events, and biogeographic history of the genus. Here we investigate ...
Lewis Thomas - - 2011
Using self-consistent field theory (SCFT), we study the conformational properties of polyelectrolyte dendrimers. We compare results for three different models of charge distributions on the polyelectrolytes: (1) a smeared, quenched charge distribution characteristic of strong polyelectrolytes; (2) a smeared, annealed charge distribution characteristic of weak polyelectrolytes; and (3) an implicit ...
Wooten J A - - 2011
Comparing niche divergence among closely related taxa can yield important insights into the ecological distinctiveness of genetically similar forms, and identify the processes that are responsible for diversification in such organisms. Here, we apply newly developed techniques for analysing niche divergence to assess how ecologically distinct a group of closely ...
Xue Jianping - - 2011
NHANES subjects self-identified as "Asian, Pacific Islander, Native American, or multiracial" (A/P/N/M) have higher levels of blood organic mercury than other racial/ethnic groups; however, the reasons for this have been unclear. This research uses exposure modeling to determine the reasons for elevated blood methylmercury (MeHg) levels, and also extends previous ...
Purse B V - - 2011
Culicoides biting midges (Diptera: Ceratopogonidae) vector a wide variety of internationally important arboviral pathogens of livestock and represent a widespread biting nuisance. This study investigated the influence of landscape, host and remotely-sensed climate factors on local abundance of livestock-associated species in Scotland, within a hierarchical generalized linear model framework. The ...
Chen Zhe Z Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT 06510, USA. - - 2012
To measure the dosimetric properties of the Model AgX100 ¹²⁵I source for interstitial brachytherapy. The photon energy spectrum emitted by the AgX100 source was measured using a high-resolution germanium spectrometer customized for low-energy brachytherapy source spectrometry. The dose distribution around the source was measured using the 1×1×1 mm³ lithium fluoride ...
Spence Jeffrey S - - 2011
Linear statistical models are used very effectively to assess task-related differences in EEG power spectral analyses. Mixed models, in particular, accommodate more than one variance component in a multisubject study, where many trials of each condition of interest are measured on each subject. Generally, intra- and intersubject variances are both ...
Creane Arthur - - 2011
Many soft biological tissues contain collagen fibres, which act as major load bearing constituents. The orientation and the dispersion of these fibres influence the macroscopic mechanical properties of the tissue and are therefore of importance in several areas of research including constitutive model development, tissue engineering and mechanobiology. Qualitative comparisons ...
Chen Yu-Cheng - - 2012
The objective of this exposure assessment was to reconstruct cumulative historical exposures for workers who have been exposed to multiple chemicals and chemical groups to better understand a cluster of brain cancers within a research and development lab. Chemicals of interest, including acrylates, bis-chloromethyl ether (BCME), chloromethyl methyl ether (CMME), ...
Cabreira Sergio F - - 2011
Post-Triassic theropod, sauropodomorph, and ornithischian dinosaurs are readily recognized based on the set of traits that typically characterize each of these groups. On the contrary, most of the early members of those lineages lack such specializations, but share a range of generalized traits also seen in more basal dinosauromorphs. Here, ...
Brown Ottilia - - 2011
The use of religion and spirituality in psychotherapy has been a contentious issue for decades. This paper explores and describes whether psychologists would use religion and spirituality in psychotherapy as well as enablers and barriers in this regard. A qualitative exploratory descriptive method was followed using purposive sampling to obtain ...
Sereysky Jedd B - - 2012
The purpose of this study was to develop and validate an in vivo mouse model of tendon fatigue and use this model to investigate and quantify the physical manifestations of fatigue damage in mouse tendon. Patellar tendons of C57BL/6J mice were fatigue loaded at 2 Hz to three endpoints (4 ...
Chapman Kathryn L - - 2011
The changing environment of monoclonal antibody (mAb) development is impacting on the cost of drug development and the use of experimental animals, particularly non-human primates (NHPs). The drive to reduce these costs is huge and involves rethinking and improving nonclinical studies to make them more efficient and more predictive of ...
Richards D P - - 2011
The composition of snake venoms shows a high degree of variation at all taxonomic levels, and natural selection for diet has been implicated as a potential cause. Saw-scaled vipers (Echis) provide a good model for studying this phenomenon. The venoms of arthropod feeding species of Echis are significantly more toxic ...
Fulk George D - - 2011
Purpose: The purpose of this study was to determine the ability of a novel shoe-based sensor that uses accelerometers, pressure sensors, and pattern recognition with a support vector machine (SVM) to accurately identify sitting, standing, and walking postures in people with stroke. Methods: Subjects with stroke wore the shoe-based sensor ...
Andrés Amara - - 2011
The present study explores the usefulness of dyadic quantification of group characteristics to predict team work performance. After reviewing the literature regarding team member characteristics predicting group performance, percentages of explained variance between 3% and 18% were found. These studies have followed an individualistic approach to measure group characteristics (e. ...
Ikiugu Moses N - - 2011
Occupational therapists are often reluctant to use single theoretical conceptual practice models to guide practice because they recognise the limitation of individual models in addressing clients' occupational performance issues. However, there is a dearth of eclectic methods of guiding theoretical model combination in the profession. The effectiveness of one such ...
Smith Stephen A - - 2011
Molluscs (snails, octopuses, clams and their relatives) have a great disparity of body plans and, among the animals, only arthropods surpass them in species number. This diversity has made Mollusca one of the best-studied groups of animals, yet their evolutionary relationships remain poorly resolved. Open questions have important implications for ...
Krauss Inga - - 2011
BACKGROUND: Gait analysis is an important instrument in clinical research and results should be objective. The purpose of this study was to quantify clinical outcomes of two biomechanical models with different anatomical coordinate systems and angle decomposition strategies for knee joint kinematics. METHODS: The study was designed to compare a ...
Chao Fa-An - - 2012
Building on a recent method by Matthews and co-workers [1], we developed a new and efficient algorithm to assign methyl resonances from sparse and ambiguous NMR data. The new algorithm (FLAMEnGO: Fuzzy Logic Assignment of MEthyl GrOups) uses Monte Carlo sampling in conjunction with fuzzy logic to obtain the assignment ...
Lecklin Tiina - - 2011
Knowledge of oil-induced impacts from the literature and experts were used to develop a Bayesian network to evaluate the biological consequences of an oil accident in the low-saline Gulf of Finland (GOF). Analysis was carried out for selected groups of organisms. Subnetworks were divided into subgroups according to a predicted ...
Dvořák Petr - - 2011
BACKGROUND: This study attempts to compare two possibilities of enhancing the colour of egg yolk. One of them is based on the ecological rearing of laying hens on natural green grass whereas the other uses a feeding dose supplemented with natural pigments in laying hens reared in individual cages. Is ...
Demir Selami - - 2011
INTRODUCTION: The effect of diurnal changes in strengths of volatile organic compound (VOC) sources on the performances of positive matrix factorization (PMF) and principal component analysis (PCA) was investigated using ambient measurement results that were taken during daytime and nighttime hours between March 24 and May 14, 2011, within Davutpasa ...
Rohbanfard Hassan H Département de kinésiologie, Université de Montréal, Station Downtown, P.O. Box 6128, Montréal, QC, H3C 3J7, - - 2011
Observation of an expert or novice model promotes the learning of a motor skill. In two experiments, we determined the effects of a mixed observation schedule (a combination of expert and novice models) on the learning of a sequential timing task. In Experiment 1, participants observed a novice, expert, or ...
Pottgiesser Torben - - 2011
PURPOSE:: The most promising attempt to reveal otherwise undetectable autologous blood doping is the Athlete Biological Passport (ABP) enabling a longitudinal monitoring of hematological measures. Recently, the determination of hemoglobin mass (tHb) was suggested to be incorporated in the adaptive model of the ABP. The purpose therefore was to evaluate ...
Clausen Morten Rahr - - 2011
Juice was manufactured from 7 different sour cherry clones and evaluated by quantitative descriptive sensory analysis and by 1H NMR spectroscopy. The sensory evaluation showed a large variation in several sensory attributes between the 7 sour cherry cultivars, and the clones could be divided into two groups based on both ...
Vinther Jakob - - 2012
Aplacophorans have long been argued to be basal molluscs. We present a molecular phylogeny, including the aplacophorans Neomeniomorpha (Solenogastres) and Chaetodermomorpha (Caudofoveata), which recovered instead the clade Aculifera (Aplacophora + Polyplacophora). Our relaxed Bayesian molecular clock estimates an Early Ordovician appearance of the aculiferan crown group consistent with the presence ...
Giarolla Jeanine - - 2012
A molecular modeling study was carried out to investigate the most likely enzymatic disassembly mechanism of dendrimers that were designed as potential antichagasic and antileishmanial prodrugs. The models contained myo-inositol (core), L-malic acid (spacer), and active agents such as 3-hydroxyflavone, quercetin, and hydroxymethylnitrofurazone (NFOH). A theoretical approach that considered one, ...
Ruud L E - - 2011
The objective was to investigate the effect of stall partition design on total lying time, lying position, and stall cleanliness, and to evaluate the preferences of cows regarding stalls with traditional fixed stall dividers or flexible stall dividers. Using a crossover design, 16 nonlactating dairy cows were housed singly for ...
Sarkar Abhijit - - 2011
In the context of color perception on modern wide-gamut displays with narrowband spectral primaries, we performed a theoretical analysis on various aspects of physiological observers proposed by CIE TC 1-36 (CIEPO06). We allowed certain physiological factors to vary, which was not considered in the CIEPO06 framework. For example, we analyzed ...
Kahn Gloria Batkin - - 2011
Abstract This article describes an innovative model of couples therapy designed to mitigate marital instability. The authors suggest that combining ongoing couples therapy with a separate relationship-focused group for each partner favorably impacts each person's neuropsychophysiological regulation and their ability to participate in a stable intimate marriage. The neurobiology of ...
Rojas Tejada Antonio J - - 2011
There have been two basic approaches for the study of minority group prejudice against the majority: to adapt instruments from the majority group, and to use qualitative techniques by analyzing the content of the discourse of the groups involved. Neither of these procedures solves the problem of measuring intergroup attitudes ...
Kluizenaar Yvonne de - - 2011
Road traffic noise in urban areas is a major source of annoyance. A quiet façade has been hypothesized to beneficially affect annoyance. However, only a limited number of studies investigated this hypothesis, and further quantification is needed. This study investigates the effect of a relatively quiet façade on the annoyance ...
Esco Michael R - - 2011
The purpose of this investigation was to cross-validate two equations that utilize the ratio of maximal heart rate (HRmax) to resting heart rate (HRrest) for predicting maximal oxygen consumption (VO2max) in white and black men. One-hundred nine white (n = 51) and black (n = 58) men completed a maximal ...
Lu Tsung-Hsueh - - 2011
OBJECTIVES: The diamond model considers two dimensions of criteria, i.e., the magnitudes of rates and the trends in rates, in order to prioritize different health issues for health policy decision-making. We aimed in this study to use the diamond model to prioritize 30 causes of death (COD) by considering both ...
Witter Leslie A - - 2011
1. Macroparasites may be a major factor shaping animal behaviour. Tundra ecosystems inhabited by caribou and reindeer (Rangifer tarandus) are known for large concentrations of ectoparasites including mosquitoes (Culicidae) and black flies (Simuliidae), as well as endoparasitic oestrid flies (Oestridae). 2. Increased intensity and duration of insect harassment because of climatic warming ...
Carrillo Andres E - - 2011
Objectives:  To generate a model that predicts fingertip blood flow (BF(f) ) and to cross-validate it in another group of subjects. Methods:  We used fingertip temperature (T(f) ), forearm temperature minus T(f) (T(For-f) ), rectal temperature (T(re) ), and their changes across time ((lag) T) to estimate BF(f) . Ten ...
Doblas Sabrina - - 2012
The assessment of metabolites by (1)H MRS can provide information regarding glioma growth, and may be able to distinguish between different glioma models. Rat C6, 9 L/LacZ, F98 and RG2, and mouse GL261, cells were intracerebrally implanted into the respective rodents, and human U87 MG cells were implanted into athymic ...
Arngren Morten - - 2011
Pre-germination is one of many serious degradations to barley when used for malting. A pre-germinated barley kernel can under certain conditions not re-germinate and is reduced to animal feed of lower quality. Identifying pre-germination at an early stage is therefore essential in order to segregate the barley kernels into low ...
Khan Moonis Ali - - 2011
Biosorption potential of mustard oil cake (MOC) for Ni(II) from aqueous medium was studied. Spectroscopic studies showed possible involvement of acidic (hydroxyl, carbonyl and carboxyl) groups in biosorption. Optimum biosorption was observed at pH 8. Contact time, reaction temperature, biosorbent dose and adsorbate concentration showed significant influence. Linear and non-linear ...
Crestini Claudia - - 2011
The degree of polymerization (DP) of softwood and hardwood milled wood lignin samples and their branching were quantitatively evaluated by a novel end group titration approach using QQ-HSQC, 31P-NMR and DFRC coupled with 31P-NMR analysis techniques. The DP of lignin can be calculated when the C9 formula, the quantitative amount ...
Shao Nan - - 2011
Further development of high-voltage lithium-ion batteries requires electrolytes with electrochemical windows greater than 5 V. Sulfone-based electrolytes are promising for such a purpose. Here we compute the electrochemical windows for experimentally tested sulfone electrolytes by different levels of theory in combination with various solvation models. The MP2 method combined with ...
Mariani Valerio - - 2011
In the Ninth Edition of the Critical Assessment of Techniques for Protein Structure Prediction (CASP9), 61,665 models submitted by 176 groups were assessed for their accuracy in the template based modeling category. The models were evaluated numerically in comparison to their experimental control structures using two global measures (GDT and ...
Sahlqvist Shannon L - - 2011
BACKGROUND: Initiatives to promote utility cycling in countries like Australia and the US, which have low rates of utility cycling, may be more effective if they first target recreational cyclists. This study aimed to describe patterns of utility cycling and examine its correlates, among cyclists in Queensland, Australia. METHODS: An ...
Albert Jeffrey M - - 2011
Zero-inflated (ZI) models, which may be derived as a mixture involving a degenerate distribution at value zero and a distribution such as negative binomial (ZINB), have proved useful in dental and other areas of research by accommodating 'extra' zeroes in the data. Used in conjunction with generalised linear models, they ...
Chaianunporn T - - 2011
Theoretical and empirical studies indicate that exploitation is a possible driver of exploiter and victim diversification. However, there are many factors which could promote and limit this diversification process. Using a spatially explicit individual-based model, where an exploiter's success depends on matching between its own and a victim's continuous trait, ...
Richmond Jonathan Q - - 2011
Abstract Mechanical reproductive barriers have been dismissed as a major driver of animal speciation, yet the extent to which such barriers cause reproductive isolation in most animal groups is largely unknown and rarely tested. In this study, we used hierarchical Bayesian modeling of mate compatibility experiments to show that body ...
Maia Luiz Guilherme Martins - - 2011
The purpose of this study was to use photoelastic analysis to compare the system of forces generated by retraction T-loop springs made with stainless steel and titanium-molybdenum alloy (TMA) (Ormco, Glendora, Calif) with photoelastic analysis. Three photoelastic models were used to evaluate retraction T-loop springs with the same preactivations in ...
Garofolo Fabio - - 2011
The 5th Workshop on Recent Issues in Bioanalysis (WRIB) was organized by the Calibration and Validation Group as a 2-day full immersion workshop for pharmaceutical companies, CROs and regulatory agencies to discuss, review, share perspectives, provide potential solutions and agree upon a consistent approach to recent issues in the bioanalysis ...
Squadrone R - - 2011
The main aim of this study was to test the hypothesis that the VibramFivefingers model, with its minimal structure, cushioning and finger separation, allows a more accurate estimate of static and dynamic foot position compared to wearing a standard cushioned running shoe. Static ankle joint position sense was assessed in ...
< 1 2 3 4 5 6 7 8 9 10 >