A Magnetically Transformable Twisting Millirobot for Cargo Delivery at Low Reynolds Number
Advanced Intelligent Systems, EarlyView.Herein, a soft millirobot, TwistBot, that transforms from a flat shape to a helical shape to propel in fluids at low Reynolds number is reported. Its geometry is optimized by numerical simulation and validated by experiments to effectively propel and deliver solid cargos.
Moonkwang Jeong +3 more
wiley +1 more source
Studies in the fertilisation of the eggs of a sea-urchin (Strongylocentrotus purpuratus) by blood-sera, sperm, sperm-extract, and other fertilising agents [PDF]
, 1912 T. Brailsford Robertson
openalex +1 more source
Sperm navigation along helical paths in 3D chemoattractant landscapes
Nature Communications, 2015 Sperm require a sense of direction to locate the egg for fertilization. They follow gradients of chemical and physical cues provided by the egg or the oviduct.
Jan F. Jikeli +3 more
semanticscholar +1 more source
Sperm DNA and detection of DNA fragmentations in sperm [PDF]
Türk Üroloji Dergisi/Turkish Journal of Urology, 2018 The questionable effectiveness of routine sperm parameters in determining male factor infertility problems and increasing the success rates of assisted reproductive techniques have led to the investigation of more detailed sperm parameters that could affect the male fertility and reproduction.
openaire +3 more sources
Advanced Intelligent Systems, EarlyView.This study presents Hi‐LabSpermTracking, a long‐duration, expert‐annotated sperm motility dataset for detection and tracking. It evaluates You Only Look Once version 8, Real‐Time Detection Transformer, and Simple Online and Realtime Tracking with a Deep Association Metric in three scenarios. The mean ensemble method improves tracking performance. Sperm
Abdulsamet Aktas +5 more
wiley +1 more source
Microcystin leucine arginine induces human sperm damage: Involvement of the Ca2+/CaMKKβ/AMPK pathway
Ecotoxicology and Environmental Safety, 2023 As a common pollutant in the water environment, microcystin leucine arginine (MC-LR) can enter semen and damage the sperm in animals. However, the mechanism by which MC-LR damages human sperm is unclear.
Xing Guo +7 more
doaj
Potassium ion influx and Na+,K+-ATPase activity are required for the hamster sperm acrosome reaction. [PDF]
, 1981 The role of a K+ ion influx and Na+,K+-ATPase activity in the hamster sperm acrosome reaction (AR) was examined, using a range of concentrations of K+,K+ ionophores and a Na+,K+-ATPase inhibitor.
Meizel, S, Mrsny, RJ
core
American Journal of Medical Genetics Part A, EarlyView.ABSTRACT This study aims to elucidate the role of the ZSWIM7 gene in the etiology of infertility, focusing on its potential association with premature ovarian insufficiency and azoospermia. We investigated an 18‐year‐old female patient who presented with primary amenorrhea, hypoplasia of the uterus and ovaries, Tanner stage II breast and pubic hair ...
Denise M. Christofolini +8 more
wiley +1 more source
The Occurrence of the Sperm Whale or Cachalot in the Shetland Seas, with Notes on the Tympano-petrous Bones of Physeter, Kogia, and other Odontoceti [PDF]
, 1904 William Turner
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The Semen pH Affects Sperm Motility and Capacitation
PLoS ONE, 2015 As the chemical environment of semen can have a profound effect on sperm quality, we examined the effect of pH on the motility, viability and capacitation of human sperm. The sperm in this study was collected from healthy males to avoid interference from
Ji Zhou +7 more
semanticscholar +1 more source