Search Results
Results 501 - 550 of 6584
< 6 7 8 9 10 11 12 13 14 15 16 >
Shem-Tov Doron D The Balvatnic School of Computer Science, Tel-Aviv University, Tel-Aviv, - - 2014
Recent technological improvements in the field of genetic data extraction give rise to the possibility of reconstructing the historical pedigrees of entire populations from the genotypes of individuals living today. Current methods are still not practical for real data scenarios as they have limited accuracy and assume unrealistic assumptions of ...
Thursby E E Gut Health and Food Safety, Institute of Food - - 2014
The epithelium in the human GI tract is coated in protective mucus, which acts as a key component of the intestinal barrier. In the colon, mucus consists of an inner, impenetrable and firmly attached layer, and an outer layer that provides a habitat for commensals. Mucins that make up mucus ...
Richardson David D Department of Epidemiology, Chapel Hill, NC, - - 2014
When an exposure is protracted or repeated over time, questions arise regarding variation in the effect for different temporal patterns of exposure. We review approaches to describe variation in an exposure's effect as a function of age-at-exposure, time-since-exposure, and exposure rate. These models implicitly assume that the effect of an ...
Hautier Lionel L Laboratoire de Paléontologie, Institut des Sciences de l'Evolution de Montpellier, UMR-CNRS 5554, Cc 064, Université de Montpellier 2, place Eugène Bataillon, Montpellier Cedex, France; Museum of Zoology, University of Cambridge, Cambridge, - - 2014
Several studies have shown an increased morphological variability of sloths from mammalian norms, affecting varied phenotypic traits from skeletal parts to soft tissues. We present here the first descriptive comparison of the whole skull morphology within the two extant sloth genera, combining geometric morphometric approaches with comparative anatomy. We used ...
Pesch Beate B Institute for Prevention and Occupational Medicine of the German Social Accident Insurance - Institute of Ruhr University Bochum (IPA), Bochum, - - 2014
To assess level and trend of exposure to hexavalent chromium (Cr(VI)) in chromium-exposed occupations for the estimation of lung cancer risks in community-based studies. This analysis was based on 3666 personal measurements and auxiliary data compiled in the German MEGA database from 1988-2009. Cr(VI) was determined spectrophotometrically at 540 nm ...
Bernardes Kionna K Federal University of Bahia, Salvador, Bahia, - - 2014
The aim of this study was to evaluate the dimensions of the JCQ among healthcare workers A validation study with 3055 health workers was conducted. Factor analysis was employed through the principal components method. For extraction of factors, parallel analysis was performed using the Monte-Carlo simulation. For the technique of ...
Danacı Burçin B Department of Physics Engineering, Istanbul Technical University, Maslak, Istanbul, - - 2014
Topological features of gene regulatory networks can be successfully reproduced by a model population evolving under selection for short dynamical attractors. The evolved population of networks exhibit motif statistics, summarized by significance profiles, which closely match those of E. coli, S. cerevsiae, and B. subtilis, in such features as the ...
Leesburg V L R VL USDA Agricultural Research Service, Miles City, MT 59301 Department of Animal, Wildlife and Grassland Sciences, UFS, P.O. Box 339, Bloemfontein, 9300, South Africa - - 2014
The goal of this research was to document the influence of Line 1 (L1) Hereford cattle, developed by the USDA at its research facility in Miles City, MT, on the U.S. Hereford population. The L1 Hereford population originated in 1934 and has been thereafter maintained as a closed herd at ...
Demers Paul P Occupational Cancer Research Centre, Toronto, CanadaUniversity of Toronto, Toronto, - - 2014
In recent years, several new burden projects have been initiated with increased methodological sophistication. Previous studies have varied with respect to methods used to identify the prevalence and relevant levels of exposure, but many have relied on CAREX estimates. In this presentation, we will focus on the impact of incorporating ...
Dussy Franz F Forensische Chemie und Toxikologie, Institut fuer Rechtsmedizin, Basel, CH-4056, - - 2014
When investigating someone's hair a single lock is cut, washed, extracted and analysed. The forensic institutes in Switzerland agreed to retain a second lock for a possible reassessment. We were interested in the reproducibility of the concentrations of analytes in hair locks taken from different areas of the head of ...
Vermeulen Roel R IRAS Utrecht University, Utrecht, The - - 2014
Risk of chronic disease may be governed not only by cumulative levels of exposure but also by dynamic aspects of the exposure history. These dynamic aspects include characteristics of the exposure history itself (such as duration of exposure or time-varying intensities of exposure) as well as aspects of age-related susceptibility. ...
Lai Peggy P Harvard School of Public Health, Boston, MA, - - 2014
Whether cessation of exposure to endotoxin containing organic dusts leads to transient vs. sustained improvement of lung function is unknown. The Shanghai Textile Workers study is a 30-year prospective cohort study of 447 cotton workers exposed to endotoxin containing cotton dust and 472 control silk workers unexposed to endotoxin. Spirometry ...
Scott Laura L University of Minnesota School of Public Health, Minneapolis, MN, - - 2014
To quantify the effect of exposure and disease misclassification on the odds ratio (OR) for ischaemic heart disease (IHD) mortality in a retrospective cohort study of trichlorophenol workers exposed to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Exposure and disease classification parameters were defined using specificity and sensitivity values either reported in the peer-reviewed literature ...
Vale Glyn A GA Natural Resources Institute, University of Greenwich, Chatham, United Kingdom; Southern African Centre for Epidemiological Modelling and Analysis, University of Stellenbosch, Stellenbosch, South - - 2014
Male and female tsetse flies feed exclusively on vertebrate blood. While doing so they can transmit the diseases of sleeping sickness in humans and nagana in domestic stock. Knowledge of the host-orientated behavior of tsetse is important in designing bait methods of sampling and controlling the flies, and in understanding ...
Hökerberg Yara Hahr Marques YH Laboratório de Epidemiologia Clínica, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, - - 2014
OBJECTIVE To evaluate the cross-cultural validity of the Demand-Control Questionnaire, comparing the original Swedish questionnaire with the Brazilian version. METHODS We compared data from 362 Swedish and 399 Brazilian health workers. Confirmatory and exploratory factor analyses were performed to test structural validity, using the robust weighted least squares mean and ...
Qiu Juan - - 2014
This study aims to identify the landscape ecological determinants related to Oncomelania hupensis distribution, map the potential high risk of O. hupensis habitats at the microscale, and assess the effects of two environmental control strategies. Sampling was performed on 242 snail sites and 726 non-snail sites throughout Qianjiang City, Hubei ...
Vlaanderen Jelle J IRAS Utrecht University, Utrecht, The - - 2014
Due to their interrelatedness, modelling independent effects of intensity, duration, and time since exposure on disease risk is complex. The indiscriminate use of the cumulative exposure metric (product of intensity and duration of exposure) might bias reported associations between exposure to hazardous agents and disease risk. We explored the use ...
Salim Celso C Fundacentro, Belo Horizonte, Minas Gerais State, - - 2014
Considering data sources and statistical trends on recent fatal cases resulting from workplace accidents in the Brazilian construction industry, herein two aspects are emphasised: a critical appraisal of the official registers on deaths resulting from work-related accidents, and a discussion on alternatives to achieve better information to support interventions in ...
Robbins Philip P Department of Philosophy,University of Missouri,Columbia, MO - - 2014
Hibbing et al. contend that individual differences in political ideology can be substantially accounted for in terms of differences in a single psychological factor, namely, strength of negativity bias. We argue that, given the multidimensional structure of ideology, a better explanation of ideological variation will take into account both individual ...
Fritschi Lin L The University of Western Australia, Perth, - - 2014
Good occupational health policy requires an overall understanding of the proportion of the working population who are exposed to hazards at work. This is difficult to estimate when nearly three-quarters of the workforce are in small and medium sized companies and so not easily surveyed or monitored. We are undertaking ...
Applebaum Katie K George Washington University, School of Public Health and Health Services, Washington, DC, - - 2014
In occupational epidemiology, we often rely on analytical models that look at the relationship between one exposure and one disease. However, the exposure may be related to more than one outcome at the target site (e.g., pulmonary diseases: pneumoconiosis, byssinosis, chronic obstructive pulmonary disease, or lung cancer), and one of ...
Yoo Changwon C Department of Biostatistics, Florida International University, Miami, FL, - - 2014
In this article we introduce modern statistical machine learning and bioinformatics approaches that have been used in learning statistical relationships from big data in medicine and behavioral science that typically include clinical, genomic (and proteomic) and environmental variables. Every year, data collected from biomedical and behavioral science is getting larger ...
Yazdani-Charati Jamshid J Department of Biostatistics, Health Sciences Research Center, Faculty of Health, Mazandaran University of Medical Sciences, Sari, - - 2014
Road safety and traffic accidents change in time and space. Although, time variations have always been considered the subject being focused by researchers, the effect of spatial correlation and spatial components on the risk of accident have been less investigated. Due to its specific geographical position, Mazandaran Province is one ...
Parnell S - - 2014
Invasive plant pathogens are increasing with international trade and travel, with damaging environmental and economic consequences. Recent examples include tree diseases such as sudden oak death in the Western United States and ash dieback in Europe. To control an invading pathogen it is crucial that newly infected sites are quickly ...
De Matteis Sara S Imperial College, London, - - 2014
The manual collection and coding of job histories is the standard method for assessing occupational exposure, but may be infeasible for large population-based studies such as the UK Biobank cohort. We aimed to develop a new web-based tool to automatically collect and code individual lifetime job histories in the UK ...
Loomis Dana D IARC, Lyon, - - 2014
To discuss the important role of occupational studies in identifying carcinogens and suggest how it could be still greater. The contribution of occupational studies to the IARC monographs is reviewed. Occupational epidemiology has made important contributions beyond developing knowledge to protect workers' health, notably in identifying carcinogens of concern for ...
Constable George W A GW Theoretical Physics Division, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, UK. Electronic address: - - 2014
We analyse a model consisting of a population of individuals which is subdivided into a finite set of demes, each of which has a fixed but differing number of individuals. The individuals can reproduce, die and migrate between the demes according to an arbitrary migration network. They are haploid, with ...
Lusczakoski Kathryn Kd KK Accelrys, Lafayette, CO, - - 2014
As the need for recovery-oriented outcomes increases, it is critical to understand how numeric recovery scores are developed. In the current article, the modern Rasch modeling techniques were applied to establish numeric scores of consumers' perceptions of recovery. A sample of 1,973 adult consumers at a community-based mental health center ...
Xiao Changji C Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, - - 2014
•An improved YASSO model is proposed by considering residual spatial autocorrelation.•Model prediction errors are minimised using GIS data at the appropriate spatial scale.•Topographical factors describe 24-49% of variation in soil carbon.
Fujimoto M - - 2014
Error correction is an important step in increasing the quality of next-generation sequencing data for downstream analysis and use. Polymorphic datasets are a challenge for many bioinformatic software packages that are designed for or assume homozygosity of an input dataset. This assumption ignores the true genomic composition of many organisms ...
Seixas Flávio Luiz FL Institute of Computing, Federal Fluminense University, Rua Passo da Pátria, 156, Niterói, RJ 24210-240, Brazil. Electronic address: - - 2014
Population aging has been occurring as a global phenomenon with heterogeneous consequences in both developed and developing countries. Neurodegenerative diseases, such as Alzheimer׳s Disease (AD), have high prevalence in the elderly population. Early diagnosis of this type of disease allows early treatment and improves patient quality of life. This paper ...
Flori Laurence L CIRAD, UMR INTERTRYP, F34398, Montpellier, France; INRA, UMR 1313 GABI, F78350, Jouy-en-Josas, - - 2014
Understanding the adaptive response to environmental fluctuations represents a central issue in evolutionary biology. Population admixture between divergent ancestries has often been considered as an efficient short-term adaptation strategy. Cattle populations from the West African Bos taurus x Bos indicus hybrid zone represent a valuable resource to characterize the effect ...
Tenailleau Quentin M QM Laboratoire Chrono-environnement UMR6249 Centre National de la Recherche Scientifique/Université de Franche-Comté, Besançon, - - 2014
Environmental epidemiological studies rely on the quantification of the exposure level in a surface defined as the subject's exposure area. For residential exposure, this area is often the subject's neighborhood. However, the variability of the size and nature of the neighborhoods makes comparison of the findings across studies difficult. This ...
Maruki Takahiro T Indiana University - - 2014
Rapidly improving sequencing technologies provide unprecedented opportunities for analyzing genome-wide patterns of polymorphisms. In particular, they have great potential for linkage-disequilibrium analyses on both global and local genetic scales, which will substantially improve our ability to derive evolutionary inferences. However, there are some difficulties with analyzing high-throughput sequencing data, including ...
Jacobsen M W MW Department of Bioscience, Aarhus University, Aarhus C, - - 2014
Processes leading to speciation in oceanic environments without obvious physical barriers remain poorly known. European and American eel (Anguilla anguilla and A. rostrata) spawn in partial sympatry in the Sargasso Sea. Larvae are advected by the Gulf Stream and other currents towards the European/North African and North American coasts, respectively. ...
Jacobsen Grant D - - 2014
This paper provides the first estimates of end-use specific emissions factors, which are estimates of the amount of a pollutant that is emitted when a unit of electricity is generated to meet demand from a specific end-use. In particular, this paper provides estimates of emissions factors for space cooling and ...
Takeda Akiko A Department of Mathematical Informatics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan. Electronic address: - - 2014
We propose a unified machine learning model (UMLM) for two-class classification, regression and outlier (or novelty) detection via a robust optimization approach. The model embraces various machine learning models such as support vector machine-based and minimax probability machine-based classification and regression models. The unified framework makes it possible to compare ...
Redelings Benjamin B Biology Department, Duke UniversityNational Evolutionary Synthesis Center - - 2014
Current estimates of diversifying positive selection rely on first having an accurate multiple sequence alignment. Simulation studies have shown that under biologically plausible conditions, relying on a single estimate of the alignment from commonly used alignment software can lead to unacceptably high false positive rates in detecting diversifying positive selection. ...
Gomez Rapson R Federation University, Australia. Electronic address: - - 2014
We report a meta-analysis of up to 40 data sets that examined the personality dimensions in the Five-Factor Model (FFM) and the integrated Five-Factor Model (IFFM) in relation to ADHD symptom domains of inattention (IA) and hyperactivity/impulsivity (HI). The IFFM incorporated the dimensions of other personality models (in particular, those ...
AbdelRahman Samir E - - 2014
The aim of this study was to propose an analytical approach to develop high-performing predictive models for congestive heart failure (CHF) readmission using an operational dataset with incomplete records and changing data over time. Our analytical approach involves three steps: pre-processing, systematic model development, and risk factor analysis. For pre-processing, ...
Lopes Paulo P Universidade Lusófona de Humanidades e Tecnologias, COPELABS, Centro de Estudos em Psicologia Cognitiva e da Aprendizagem, Ares do Pinhal, Portugal. Electronic address: - - 2014
A high degree of self-efficacy is required from drug users if they are to adopt long-term abstinence-maintaining or harm-reducing behaviors. Our objective was to analyze the psychometric quality of the Harm Reduction Self-Efficacy Questionnaire (HRSEQ) with the Rating Scale Model (RSM), an extension of the Rasch Model for polytomous items. ...
Xie Haoran H Department of Computer Science, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong Special Administrative - - 2014
In the era of big data, collaborative tagging (a.k.a. folksonomy) systems have proliferated as a consequence of the growth of Web 2.0 communities. Constructing user profiles from folksonomy systems is useful for many applications such as personalized search and recommender systems. The identification of latent user communities is one way ...
Wang Jinliang J Institute of Zoology, Zoological Society of London, London, NW1 4RY, United - - 2014
Coupled with rapid developments of efficient genetic markers, powerful population genetics methods were proposed to estimate migration rates (m) in natural populations in much broader spatial and temporal scales than the traditional mark-release-recapture (MRR) methods. Highly polymorphic (e.g. microsatellites) and genomic wide (e.g. SNPs) markers provide sufficient information to assign ...
Downs C J CJ *Department of Natural Resources and Environmental Sciences, University of Nevada, Reno, NV 89557, USA; Department of Biological Sciences, North Dakota State University, Fargo, ND 58102, USA - - 2014
Considerable research in ecoimmunology focuses on investigating variation in immune responses and linking this variation to physiological trade-offs, ecological traits, and environmental conditions. Variation in immune responses exists within and among individuals, among populations, and among taxonomic groupings. Understanding how variation and covariation are distributed and how they differ across ...
Cai Guanjing - - 2014
Controlling harmful algae blooms (HABs) using microbial algicides is cheap, efficient and environmental-friendly. However, obtaining high yield of algicidal microbes to meet the need of field test is still a big challenge since qualitative and quantitative analysis of algicidal compounds is difficult. In this study, we developed a protocol to ...
Davis Brittany A BA MRC Centre for Neuropsychiatric Genetics and Genomics, Neuroscience and Mental Health Research Institute, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff, CF24 4HQ, - - 2014
Rodent models are a key factor in the process of translating psychiatric genetics and genomics findings, allowing us to shed light on how risk-genes confer changes in neurobiology by merging different types of data across fields, from behavioural neuroscience to the burgeoning omics (e.g. genomics, epigenomics, proteomics, etc.). Moreover, they ...
Iversen Edwin S - - 2014
Genetic association studies are conducted to discover genetic loci that contribute to an inherited trait, identify the variants behind these associations and ascertain their functional role in determining the phenotype. To date, functional annotations of the genetic variants have rarely played more than an indirect role in assessing evidence for ...
Otani Koichi K Department of Psychiatry, Yamagata University School of Medicine, 2-2-2 Iida-Nishi, Yamagata 990-9585, - - 2014
Beck's cognitive theory of depression postulates personality vulnerability factors termed sociotropy and autonomy, which are accompanied by characteristic interpersonal styles. Meanwhile, Bartholomew contends that negative working models of the self and other built through insecure attachment relationships are externalized as distinctive interpersonal styles. The present study examined the relationships of ...
Liu Ruijie - - 2014
SNP genotyping microarrays have revolutionized the study of complex disease. The current range ofcommercially available genotyping products contain extensive catalogues of low frequency and rarevariants. Existing SNP calling algorithms have difficulty dealing with these low frequency variants,as the underlying models rely on each genotype having a reasonable number of observations ...
May Sabine S PharmBioTec GmbH, Saarbrücken, - - 2014
The aim of this study was to investigate influencing factors on the dissolution test for powders for pulmonary delivery with USP apparatus 2 (paddle apparatus). We investigated the influence of dose collection method, membrane holder type and the presence of surfactants on the dissolution process. Furthermore, we modeled the in ...
< 6 7 8 9 10 11 12 13 14 15 16 >