Results 131 to 140 of about 1,568,056 (388)
PEK14: A Kinesin‐4 Necessary for Male‐Derived Fertility in Arabidopsis thaliana
Cytoskeleton, EarlyView.ABSTRACT Of the 61 kinesins annotated in Arabidopsis thaliana, many are still without assigned function. Here, we have screened an insertional mutant library of Arabidopsis pollen‐expressed kinesins for fertility defects. Insertional mutants for three kinesins showed a significant reduction in seed set.
Isabella N. Mendes +6 more
wiley +1 more source
Competition among eggs shifts to cooperation along a sperm supply gradient in an external fertilizer [PDF]
arXiv, 2015 Competition among gametes for fertilization imposes strong selection. For external fertilizers, this selective pressure extends to eggs for which spawning conditions can range from sperm limitation (competition among eggs) to sexual conflict (overabundance of competing sperm toxic to eggs).
arxiv
VARIABILITY OF THE SPERM COUNT [PDF]
Obstetrical & Gynecological Survey, 1951 N. A. Richards +2 more
openaire +4 more sources
Deep Underground Science and Engineering, EarlyView.Hydraulic fracturing in tight sandstone and fracture propagation characteristics using backscattered electron‐scanning electron microscope (BSE‐SEM) images. Abstract This study focuses on hydraulic fracturing experiments conducted under triaxial conditions on tight sandstone specimens from Shivpuri district, Madhya Pradesh, India.
Pankaj Rawat, Narendra Kumar Samadhiya
wiley +1 more source
An update on the potential for male contraception : emerging options [PDF]
, 2013 The human population continues to grow and is estimated to rise to 10.1 billion by the end of the century. Therefore, there is still an unmet need for safe and highly effective contraceptive options for both men and women.
Alsaadi, Manal +5 more
core +1 more source
Design Principles Of Inorganic‐Protein Hybrid Materials for Biomedicine
Exploration, EarlyView.Inorganic protein hybrid materials (IPHMs) due to editable structure present unrivalled potential at the intersection of synthetic biology and materials science. The synthesis of IPHMs with a high degree of biosafety from bioactive units represents a shift in material design and synthesis.
Hao Liu +3 more
wiley +1 more source
PLoS ONE, 2019 Childhood cancer survivors (CCS) are more likely than siblings to report low sperm count and to use assisted reproductive technologies. Yet, it is still unclear if the sperm produced many years after remission of cancer display DNA and chromatin damage ...
Hermance Beaud +5 more
doaj +1 more source
High spatially sensitive quantitative phase imaging assisted with deep neural network for classification of human spermatozoa under stressed condition [PDF]
arXiv, 2020 Sperm cell motility and morphology observed under the bright field microscopy are the only criteria for selecting particular sperm cell during Intracytoplasmic Sperm Injection (ICSI) procedure of Assisted Reproductive Technology (ART). Several factors such as, oxidative stress, cryopreservation, heat, smoking and alcohol consumption, are negatively ...
arxiv
Human Molecular Genetics, 2011 The azoospermia factor c (AZFc) region harbors multi-copy genes that are expressed in the testis. Deletions of the AZFc region lead to reduced copy numbers of these genes.
M. J. Noordam +7 more
semanticscholar +1 more source
Decline in human sperm counts during the past 50 years? [PDF]
, 2005 There is widespread concern that environmental pollutants acting as xenoestrogens may affect human fertility adversely. Whether this has already made an impact on human fertility worldwide remains debatable at the present stage.
Jayachandra, Srinivasa +2 more
core