Results 91 to 100 of about 1,599,536 (288)

Using the current Brazilian value for the biological exposure limit applied to blood lead level as a lead poisoning diagnostic criterion

open access: yesCadernos de Saúde Pública
In general, biological exposure limits are only used for the promotion and preservation of workers' health and are not applied for diagnostic purposes. However, the issue is controversial for certain types of occupational poisoning.
Ricardo Cordeiro
doaj   +2 more sources

The Reasonable Ineffectiveness of Mathematics in the Biological Sciences

open access: yesEntropy
The known laws of nature in the physical sciences are well expressed in the language of mathematics, a fact that caused Eugene Wigner to wonder at the “unreasonable effectiveness” of mathematical concepts to explain physical phenomena.
Seymour Garte   +2 more
doaj   +1 more source

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

open access: yesFEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang   +9 more
wiley   +1 more source

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

open access: yesFEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Surmounting photon limits and motion artifacts for biological dynamics imaging via dual-perspective self-supervised learning

open access: yesPhotoniX
Visualizing rapid biological dynamics like neuronal signaling and microvascular flow is crucial yet challenging due to photon noise and motion artifacts.
Binglin Shen   +8 more
doaj   +1 more source

THE EFFECTS OF MINIMUM SIZE LIMITS ON RECREATIONAL FISHING [PDF]

open access: yes
Minimum size limits have become an increasingly popular management tool in recreational fisheries. This popularity stems from the potential of minimum size limits to accomplish the twin goals of limiting overfishing and improving fishing quality through ...
Homans, Frances R., Ruliffson, Jane A.
core   +1 more source

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

open access: yesFEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani   +4 more
wiley   +1 more source

ЭКСПЕРТНАЯ ОЦЕНКА ЭПИЗООТИЧЕСКОЙ СОСТАВЛЯЮЩЕЙ БИОЛОГИЧЕСКОЙ ОПАСНОСТИ АФРИКАНСКОЙ ЧУМЫ СВИНЕЙ И МЕРЫ ПО ЕЕ СНИЖЕНИЮ

open access: yesВетеринарная патология, 2010
We established that African swine fever in South Federal district condition have important epizootic danger. And it is vital component of biological danger in the region (index of unfavorable territories for the last tree years - 0.583; index of time ...

doaj  

Assessment of the stocks and forecast of the catches of bream (Abramis brama Linnaeus, 1758), common carp (Cyprinus carpio Linnaeus, 1758), roach (Rutilus rutilus Linnaeus, 1758), Prussian carp (Carassius gibelio Bloch, 1782) and pikeperch (Sander lucioperca Linnaeus, 1758) in the Zaporizhzhia (Dnipro) Reservoir for 2025

open access: yesRibogospodarsʹka Nauka Ukraïni
Purpose. To analyze and summarize the biological parameters of the main commercial species of aquatic bioresources using the example of bream, common carp, roach, Prussian carp and pikeperch of the Zaporizhzhia (Dnipro) Reservoir under conditions of ...
O. Marenkov   +4 more
doaj   +1 more source

Biomorphological peculiarities of Gypsophila paniculata L. development in ontogenesis

open access: yesІнтродукція Рослин, 2000
The work is devoted to the studies of biological and morphological peculiarities of Gypsophila paniculata in ontogenesis in natural populations and under the conditions of introduction in the limits of the species areal.
O.M. Tsarenko
doaj   +1 more source

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