Results 11 to 20 of about 4,375,437 (297)
A theoretical framework for estimation of AUCs in complete and incomplete sampling designs. [PDF]
, 2009 Nonclinical in vivo animal studies have to be completed before starting clinical studies of the pharmacokinetic behavior of a drug in humans. The drug exposure in animal studies is often measured by the area under the concentration versus time curve (AUC)
Jaki, Thomas, Wolfsegger, Martin J.
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An Optimized Active Sampling Procedure for Aerobiological DNA Studies
Sensors, 2023 The Earth’s atmosphere plays a critical role in transporting and dispersing biological aerosols. Nevertheless, the amount of microbial biomass in suspension in the air is so low that it is extremely difficult to monitor the changes over time in these ...
Jyothi Basapathi Raghavendra +3 more
doaj +1 more source
Arquivos Brasileiros de Cardiologia, 2007 FUNDAMENTO: O monitoramento periódico do tabagismo na população é de interesse para a saúde pública. OBJETIVOS: Comparar a prevalência do tabagismo e atitudes em relação ao tabagismo em uma amostra de residentes do município de São Paulo, em 1987 e em ...
Luiz Francisco Marcopito +5 more
doaj +1 more source
Methodological framework for projecting the potential loss of intraspecific genetic diversity due to global climate change [PDF]
, 2012 Background: While research on the impact of global climate change (GCC) on ecosystems and species is flourishing, a fundamental component of biodiversity -- molecular variation -- has not yet received its due attention in such studies.
Bálint, Miklós +2 more
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Designing a Longitudinal Survey on the Development of Iranian Children and Adolescents
تحقیقات نظام سلامت, 2021 Background: Investigating the effect of environmental factors, such as parental guidance and upbringing, on the individuals’ growth during their childhood and adolescence requires a long-term longitudinal study.
Zahra Rezaei-Ghahroodi +4 more
doaj
Sampling Methods in Clinical Research; an Educational Review
Archives of Academic Emergency Medicine, 2017 Clinical research usually involves patients with a certain disease or a condition. The generalizability of clinical research findings is based on multiple factors related to the internal and external validity of the research methods.
Mohamed Elfil, Ahmed Negida
doaj +1 more source
Sampling time-dependent artifacts in single-cell genomics studies
Genome Biology, 2020 Robust protocols and automation now enable large-scale single-cell RNA and ATAC sequencing experiments and their application on biobank and clinical cohorts.
Ramon Massoni-Badosa +15 more
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Bioaerosol sampling: sampling mechanisms, bioefficiency and field studies [PDF]
Journal of Hospital Infection, 2016 Investigations into the suspected airborne transmission of pathogens in healthcare environments have posed a challenge to researchers for more than a century. With each pathogen demonstrating a unique response to environmental conditions and the mechanical stresses it experiences, the choice of sampling device is not obvious.
Haig, C.W. +3 more
openaire +2 more sources
Optimising sampling and analysis protocols in environmental DNA studies
Scientific Reports, 2021 Ecological surveys risk incurring false negative and false positive detections of the target species. With indirect survey methods, such as environmental DNA, such error can occur at two stages: sample collection and laboratory analysis.
Andrew Buxton +4 more
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Crude incidence in two-phase designs in the presence of competing risks. [PDF]
, 2016 BackgroundIn many studies, some information might not be available for the whole cohort, some covariates, or even the outcome, might be ascertained in selected subsamples. These studies are part of a broad category termed two-phase studies.
A Demnati +45 more
core +3 more sources