Results 101 to 110 of about 2,253,933 (319)

Comparing two Formulas of Sample Size Determination for Prevalence Studies

open access: yesعلوم بهداشتی ایران, 2013
Background and purpose: Sample size and its determination is one of the most important problems in health researches. Calculating sample size for prevalence studies is one of the common questions of sample size topics.
Hamed Tabesh   +2 more
doaj  

Adaptive Clinical Trials and Sample Size Determination in the Presence of Measurement Error and Heterogeneity

open access: yesStats
Adaptive clinical trials offer a flexible approach for refining sample sizes during ongoing research to enhance their efficiency. This study delves into improving sample size recalculation through resampling techniques, employing measurement error and ...
Hassan Farooq   +4 more
doaj   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

Bayesian sample size determination in basket trials borrowing information between subsets. [PDF]

open access: yesBiostatistics, 2023
Zheng H   +4 more
europepmc   +1 more source

Sampling and analysis of coarsely shredded mixed commercial waste. Part II: particle size-dependent element determination [PDF]

open access: hybrid, 2021
Sandra Antonia Viczek   +4 more
openalex   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Determination of minimum sample size and discriminatory expression patterns in microarray data [PDF]

open access: bronze, 2002
Daehee Hwang   +3 more
openalex   +1 more source

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