Results 201 to 210 of about 202,771 (390)

Making vertebrate fossil radiocarbon dates more useful for global scientific research

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Radiocarbon dating of bones is essential for reconstructing timelines of species' occurrences, domestication, extinction, migrations, and interactions with Quaternary environments. Many studies compile these chronologies at continental to global scales by aggregating radiocarbon dates from various sources, often balancing data quantity and ...
Salvador Herrando‐Pérez   +1 more
wiley   +1 more source

Contrasting functional responses of benthic and hyporheic stream biofilms to light availability and macronutrient stoichiometry

open access: yesLimnology and Oceanography, EarlyView.
Abstract Nutrient dynamics in headwater streams are governed by benthic and hyporheic biofilms, with carbon (C) : nitrogen (N) : phosphorus (P) ratios driving the heterotrophic microbial biofilm development through nutrient limitation. Furthermore, heterotrophic responses to changes in C : N : P ratios are probably modulated by autotrophic responses to
Anika Große   +8 more
wiley   +1 more source

A biological-chemical test system to investigate the influence of sulfonylurea herbicides such as metsulfuron-methyl on nitrogen metabolism in soybean

open access: yesEuropean Journal of Horticultural Science, 2004
A. J. Keutgen   +8 more
doaj   +1 more source

Uncovering Key Characteristics of Antibacterial Peptides through Machine Learning

open access: yesMacromolecular Rapid Communications, EarlyView.
Machine‐learning (ML) techniques using random forest classification models revealed key characteristics that predict effective antimicrobial peptides (AMPs) targeting Gram‐negative bacteria, Gram‐positive bacteria, and mycobacteria. The ideal cLogP (<$ < $−6) and net‐charge (≤+4) threshold was the same for all three targets with variations in the ...
Jooyoung Roh   +2 more
wiley   +1 more source

The Asparagine Synthetase of Escherichia coli

open access: hybrid, 1969
Howard Cedar, JH Schwartz
openalex   +1 more source

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