Results 81 to 90 of about 16,137,556 (298)
, 2012 This presentation covers probability and non-probability sampling in the social sciences. It also addresses the issue of selecting case studies and the problems of non-response bias and how big a sample should be.
Dr Luke Sloan
core
Protected sampling is preferable in bronchoscopic studies of the airway microbiome
ERJ Open Research, 2017 The aim was to evaluate susceptibility of oropharyngeal contamination with various bronchoscopic sampling techniques. 67 patients with obstructive lung disease and 58 control subjects underwent bronchoscopy with small-volume lavage (SVL) through the ...
Rune Grønseth +18 more
doaj +1 more source
Calpain small subunit homodimerization is robust and calcium‐independent
FEBS Letters, EarlyView.Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy +4 more
wiley +1 more source
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source
Perspective (Institute for Christian Studies)
, 1996 Three new faculty appointments spark excitement [Adrienne Dengerink Chaplin; Carroll Guen Hart; Douglas Blomberg], From the President: Short Catechism [roots of the Institute’s Reformed vision of Education], Students [M. Phil. F.
Fernhout, Harry +2 more
core +1 more source
Minimizando perdas e maximizando eficiência na detecção de casos de desnutrição aguda severa
Revista de Saúde PúblicaOBJETIVO: Alguns dos muitos desafios enfrentados por epidemiologistas são planejar adequadamente e otimizar o processo de captação de sujeitos em termos de efetividade e eficiência.
Michael E Reichenheim +1 more
doaj
Sample size for ophthalmology studies.
Indian journal of ophthalmology, 2000 Knowledge and the usage of actual sample size formulae are a necessity as validity of the inferences from research studies is often dependent on this. This paper explains how sample sizes are calculated. The concept of sampling variation is explained to emphasize the need for its proper calculation.
Naduvilath Thomas +2 more
openaire +2 more sources
HIV prevalence among transgender women in Northeast Brazil - Findings from two Respondent Driven Sampling studies. [PDF]
BMC Public Health, 2022 Leite BO +6 more
europepmc +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source