Results 81 to 90 of about 1,048,440 (358)
Spanish Journal of Agricultural Research, 2019 The objective of this study was to evaluate the impact of age at first calving (AFC) and climatic conditions at calving on peripartum disorders and reproductive performance in Holstein heifers in a hot environment.
Miguel Mellado +4 more
doaj +1 more source
Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer
FEBS 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
Replacement Costs, Stocks and the Valuation of Inputs [PDF]
This unpublished paper, written for distribution on the OPE-L list, seeks to clarify the conception of socially necessary labour time in Marx’s conception of value.
Freeman, Alan
core +1 more source
Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing
FEBS Letters, EarlyView.Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley +1 more source
An Adjustment of Truncation and Selection Effect for Estimating Conception Rate from First Birth Interval Data [PDF]
, 2021 Anup Kumar +2 more
openalex +1 more source
FEBS Letters, EarlyView.Multidrug transporters BpeB and BpeF from the Gram‐negative pathogen Burkholderia pseudomallei have a hydrophilic patch in their substrate‐binding pocket. Drug susceptibility tests and growth curve analyses using an Escherichia coli recombinant expression system revealed that the hydrophilic patches of BpeB and BpeF are involved in the substrate ...
Ui Okada, Satoshi Murakami
wiley +1 more source
Pakistan Veterinary Journal, 2003 The main objective of this study was to identify the factors that affect the success of artificial insemination (A.I) services under field conditions. The data from a total of 459 inseminations were analyzed. The effects of farm, animal, semen/bull and A.
M. Anzar*, U. Farooq**, M.A. Mirza*, M. Shahab** and N. Ahmad*
doaj
Scientific Papers Animal Science and Biotechnologies, 2023 The objectives of this study were to elucidate the impact of the administration of recombinant bovine somatotropin (rbST), in combination with Ovsynch protocol on the preovulatory follicle (POF) diameter, a daily growth rate of the dominant follicle (DF),
Mohamed Mohsen Mansour +1 more
doaj
Spanish Journal of Agricultural Research, 2019 The objective of this study was to determine the effects of the administration of recombinant bovine somatotropin (rbST) throughout lactation to high-yielding subfertile (conception > 270 days postpartum) Holstein cows undergoing extended lactations ...
Jessica Flores +5 more
doaj +1 more source
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source