Results 31 to 40 of about 468,292 (298)

Speciation Through the Lens of Population Dynamics: A Theoretical Primer on How Small and Large Populations Diverge

open access: yesPopulation Ecology, EarlyView.
Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas large populations harbor more genetic diversity, which can alter divergence trajectories. We highlight theoretical models that incorporate population size
Ryo Yamaguchi   +3 more
wiley   +1 more source

On Kim-independence

open access: yesJournal of the European Mathematical Society, 2020
We study NSOP _1 theories. We define Kim-independence , which generalizes non-forking independence in simple theories and corresponds to non-forking at a generic scale.
Itay Kaplan, Nicholas Ramsey
openaire   +3 more sources

Ideals of independence [PDF]

open access: yesArchive for Mathematical Logic, 2019
We study two ideals which are naturally associated to independent families. The first of them, denoted J A, is characterized by a diagonalization property which allows along a cofinal sequence (the order type of which of uncountable cofinality) of stages along a finite support iteration to adjoin a maximal independent family.
Vera Fischer, Diana Carolina Montoya
openaire   +2 more sources

Circulating histones as clinical biomarkers in critically ill conditions

open access: yesFEBS Letters, EarlyView.
Circulating histones are emerging as promising biomarkers in critical illness due to their diagnostic, prognostic, and therapeutic potential. Detection methods such as ELISA and mass spectrometry provide reliable approaches for quantifying histone levels in plasma samples.
José Luis García‐Gimenez   +17 more
wiley   +1 more source

On quasi-stability of the vector Boolean problem of minimizing absolute deviations of linear functions from zero [PDF]

open access: yesComputer Science Journal of Moldova, 2006
We consider a multi-criterion Boolean programming problem with partial criteria of the kind MIN MODUL of linear functions. We investigate such type of stability which can be understood as a discrete analogue of the Hausdorff lower semi-continuity.
Vladimir A. Emelichev   +1 more
doaj  

Monitoring the impacts of weather and climate extremes on global agricultural production

open access: yesWeather and Climate Extremes, 2015
The World Agricultural Outlook Board (WAOB), under the direction of the Department of Agriculture's Office of the Chief Economist, employs a staff of agricultural meteorologists whose mission is to monitor and assess the impacts of weather and climate on
Robert Johansson   +4 more
doaj   +1 more source

Cortical Bone Derived Stem Cells Modulate Cardiac Fibroblast Response via miR-18a in the Heart After Injury

open access: yesFrontiers in Cell and Developmental Biology, 2020
The adult heart following injury such as a myocardial infarction forms a fibrotic scar associated with transformation of resident cardiac fibroblasts into myofibroblast, accelerating cardiac remodeling and dysfunction.
Lindsay Kraus   +7 more
doaj   +1 more source

Mechanisms and kinetic assays of aminoacyl‐tRNA synthetases

open access: yesFEBS Letters, EarlyView.
Accurate protein synthesis is crucial for life. The key players are aminoacyl‐tRNA synthetases (AARSs), which read the genetic code by pairing cognate amino acids and tRNAs. AARSs establish high amino acid selectivity by employing physicochemical limits in molecular recognition.
Igor Zivkovic   +2 more
wiley   +1 more source

Interaction of Biomolecules with Silver Nanoparticles Prepared via Intramolecular Redox Reaction of Ag(I) Complexes as Their Precursors

open access: yesChemistry Proceedings
Nanoparticles are known to have a high specific surface area, which accounts for an increased probability of their interaction with bacterial cells. Therefore, the application of silver(I) nanoparticles (AgNPs) and their nanocomposites as antimicrobial ...
Iveta S. Turomsha   +4 more
doaj   +1 more source

Association of Vitamin K Insufficiency as Evaluated by Serum Undercarboxylated Osteocalcin With Frailty in Community-Dwelling Older Adults

open access: yesFrontiers in Aging, 2022
Frailty is the state of having a reduced ability to recover from stress. Intervention in frailty is important for fulfilling healthy longevity. Vitamin K is a fat-soluble vitamin contained in vegetables and fermented foods. Although vitamin K is shown to
Kotaro Azuma   +5 more
doaj   +1 more source

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