Results 41 to 50 of about 136,516 (311)

Investigation of Relation between the Ovulation Confirmation and Conception Rate in Dairy Cattle

open access: yesJournal of Animal Reproduction and Biotechnology, 2018
Ensuring timely ovulation concerning the service is valuable. A satisfactory conception rate can be achieved by making sure that ovulation occurs within 7-18 hours after artificial insemination (AI).
Hyun-Joo Lim, Ho-Beak Yoon
doaj   +1 more source

CellTypeGraph: A New Geometric Computer Vision Benchmark [PDF]

open access: yesarXiv, 2022
Classifying all cells in an organ is a relevant and difficult problem from plant developmental biology. We here abstract the problem into a new benchmark for node classification in a geo-referenced graph. Solving it requires learning the spatial layout of the organ including symmetries.
arxiv  

Activation of the renin-angiotensin-aldosterone system in mares around ovulation

open access: yesCzech Journal of Animal Science, 2017
Many physiological events occurring during the estrous cycle, including folliculogenesis, oocyte maturation, ovulation, follicular atresia, corpus luteum development, luteolysis, steroidogenesis, and angiogenesis are associated with an increased ...
Katy Satué   +2 more
doaj   +1 more source

Multi-Kink Quantile Regression for Longitudinal Data with Application to the Progesterone Data Analysis [PDF]

open access: yesarXiv, 2021
Motivated by investigating the relationship between progesterone and the days in a menstrual cycle in a longitudinal study, we propose a multi-kink quantile regression model for longitudinal data analysis. It relaxes the linearity condition and assumes different regression forms in different regions of the domain of the threshold covariate.
arxiv  

Extinction probabilities for a distylous plant population modeled by an inhomogeneous random walk on the positive quadrant [PDF]

open access: yesSIAM Journal on Applied Mathematics 73, 2 (2013) 700--722, 2012
In this paper, we study a flower population in which self-reproduction is not permitted. Individuals are diploid, {that is, each cell contains two sets of chromosomes}, and {distylous, that is, two alleles, A and a, can be found at the considered locus S}. Pollen and ovules of flowers with the same genotype at locus S cannot mate.
arxiv   +1 more source

Steroid signaling in mature follicles is important for Drosophila ovulation

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2017
Significance Ovulation is thought to be divergent from insects to mammals. In the latter case, ovulation is regulated by luteinizing hormone and the steroid hormone progesterone, neither of which is found in insects so far.
Elizabeth M Knapp, Jianjun Sun
semanticscholar   +1 more source

Fluid Retention over the Menstrual Cycle: 1-Year Data from the Prospective Ovulation Cohort

open access: yesObstetrics and Gynecology International, 2011
We report menstrual and mid-cycle patterns of self-reported “fluid retention” in 765 menstrual cycles in 62 healthy women. Self-reported “fluid retention,” commonly described as bloating, is one element of the clinical assessment and diagnosis of ...
Colin P. White   +3 more
doaj   +1 more source

Gene knockout of nuclear progesterone receptor provides insights into the regulation of ovulation by LH signaling in zebrafish

open access: yesScientific Reports, 2016
It is well established that the luteinizing hormone surge triggers ovulation, a dynamic process leading to the release of the mature oocyte from the ovarian follicle.
Haipei Tang   +10 more
semanticscholar   +1 more source

The Proteome of Equine Oviductal Fluid Varies Before and After Ovulation: A Comparative Study

open access: yesFrontiers in Veterinary Science, 2021
Equine fertilization cannot be performed in the laboratory as equine spermatozoa do not cross the oocyte's zona pellucida in vitro. Hence, a more profound study of equine oviductal fluid (OF) composition at the pre-ovulatory and post-ovulatory stages ...
Pablo Fernández-Hernández   +11 more
doaj   +1 more source

Seminal Plasma Induces Ovulation in Llamas in the Absence of a Copulatory Stimulus: Role of Nerve Growth Factor as an Ovulation-Inducing Factor.

open access: yesEndocrinology, 2016
Llamas are considered to be reflex ovulators. However, semen from these animals is reported to be rich in ovulation-inducing factor(s), one of which has been identified as nerve growth factor (NGF).
M. Berland   +7 more
semanticscholar   +1 more source

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