Results 31 to 40 of about 27,801 (203)
Duck viral hepatitis (DVH), mainly caused by duck hepatitis A virus genotype 3 (DHAV‐3) in China, is an important disease affecting Pekin ducks. Using artificial selection breeding based on genealogical and phenotypic observations, a susceptible line (Z7)
Suyun Liang +8 more
doaj +1 more source
Enhancing host immunity is an effective way to reduce morbidity in chickens. Heterophil to lymphocyte ratio (H/L) is associated with host disease resistance in birds. Chickens with different H/L levels show different disease resistances.
Jin ZHANG +8 more
doaj +1 more source
The evolutionary genetics of lactase persistence in seven ethnic groups across the Iranian plateau
Background The ability to digest dietary lactose is associated with lactase persistence (LP) in the intestinal lumen in human. The genetic basis of LP has been investigated in many populations in the world.
Hadi Charati +7 more
doaj +1 more source
A novel locus on chromosome 1 underlies the evolution of a melanic plumage polymorphism in a wild songbird [PDF]
Understanding the mechanisms responsible for phenotypic diversification within and among species ultimately rests with linking naturally occurring mutations to functionally and ecologically significant traits.
Yann X. C. Bourgeois +13 more
doaj +1 more source
Evidence for sweep signatures in antibiotic-resistant strains in three species of bacteria [PDF]
Over the last decades antibiotic resistance has evolved and spread in many different bacterial species. From an evolutionary perspective, drug resistance is an adaptation to a new environment.
Anjani Pradhananga +4 more
doaj +2 more sources
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez +5 more
wiley +1 more source
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora +4 more
wiley +1 more source
Recent selective sweeps in North American Drosophila melanogaster show signatures of soft sweeps.
Adaptation from standing genetic variation or recurrent de novo mutation in large populations should commonly generate soft rather than hard selective sweeps.
Nandita R Garud +3 more
doaj +1 more source
The clarifying role of time series data in the population genetics of HIV.
HIV can evolve remarkably quickly in response to antiretroviral therapies and the immune system. This evolution stymies treatment effectiveness and prevents the development of an HIV vaccine.
Alison F Feder +2 more
doaj +1 more source
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch +3 more
wiley +1 more source

