Results 81 to 90 of about 4,583,317 (294)

Differences in productive robustness in rabbits selected for reproductive longevity or litter size

Animal, 2009
The aim of this work was to evaluate the ability of a line selected for reproductive longevity (LP) to confront productive challenges compared to a line selected during 31 generations for litter size at weaning (V).
P. Theilgaard, M. Baselga, E. Blas, N.C. Friggens, C. Cervera, J.J. Pascual   +5 more
doaj   +1 more source

Axial exchange currents and nucleon spin [PDF]

, 2006
We calculate the hypercharge and flavor singlet axial couplings related to the spin of the nucleon in a constituent quark model. In addition to the standard one-body axial currents, the model includes two-body axial exchange currents.
A. J. Buchmann, Abe), Ashman), Barquilla-Cano, Barquilla-Cano, Brodsky, Broniowski, Buchmann, Buchmann, Buchmann, Buchmann, Carlitz, Cheng, Cheng, Close, D. Barquilla-Cano, Dugger, E. Hernández, Feldmann, Flores-Mendieta, Groom), Ji, Kirchbach, Leutwyler, Lipkin, Manohar, Morpurgo, Napsuciale, Narison, Peris, Sehgal, Singleton, Weinberg, Yabu, Zhao, Zhu   +35 more
core   +2 more sources

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

Influence of weaning age on the reproductive efficiency of primiparous cows Influência da idade de desmame na eficiência reprodutiva de vacas primíparas

Revista Brasileira de Zootecnia, 2010
The effects of weaning age (90 days or 156 days) of female beef calves were evaluated on their subsequent performance from the beginning of the first pregnancy and the end of the second breeding season, at 22/24 months of age.
Ricardo Zambarda Vaz, José Fernando Piva Lobato, João Restle   +2 more
doaj   +1 more source

Hematopoietic (stem) cells—The elixir of life?

FEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo, Jonah Anderson, Emilie Dinh Vedrenne, Noël Yeh Martín, Jette Lengefeld   +4 more
wiley   +1 more source

Spinning particles in general relativity: Momentum-velocity relation for the Mathisson-Pirani spin condition

, 2018
The Mathisson-Papapetrou-Dixon (MPD) equations, providing the "pole-dipole" description of spinning test particles in general relativity, have to be supplemented by a condition specifying the worldline that will represent the history of the studied body.
Costa, L. Filipe O., Lukes-Gerakopoulos, Georgios, Semerák, Oldřich   +2 more
core   +1 more source

The role and implications of mammalian cellular circadian entrainment

FEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

Humpback whale (Megaptera novaeangliae) maturity and body condition in Ireland, Norway and Cabo Verde based on UAS photogrammetry data

Frontiers in Marine Science
Animal morphometrics are essential for understanding a species’ life history and its ecological interactions with the environment. This study investigates the maturity status and body condition of humpback whales (Megaptera novaeangliae) across ...
Miguel Blázquez, Nick Massett, Seán O’Callaghan, Marcus Hogan, Pedro López-Suárez, Katia Lopes, Pádraig Whooley, Joanne M. O’Brien, Joanne M. O’Brien, Frederick W. Wenzel, Ian O’Connor, Simon D. Berrow, Simon D. Berrow   +12 more
doaj   +1 more source

The effects of overwintering, sex, year, field identity and vegetation at the boundary of fields on the body condition of Anchomenus dorsalis (Coleoptera: Carabidae)

European Journal of Entomology, 2014
Body condition, in terms of body mass corrected for structural body size, represents an animal s energetic reserves and is an indicator of the health and fitness of an organism. This study investigates the variability in the body condition of the carabid
Eliška BARANOVSKÁ, Michal KNAPP, Pavel SASKA   +2 more
doaj   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source