Results 71 to 80 of about 216,508 (311)

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

Advanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source

Exposure to ambient ozone and sperm quality among adult men in China

Ecotoxicology and Environmental Safety
Background: Limited evidence exists regarding the association between ozone exposure and adverse sperm quality. We aimed to assess the association between ozone exposure and sperm quality, and identify susceptible exposure windows.
Yadi Shi, Yangchang Zhang, Kun Yuan, Ze Han, Shi Zhao, Zhenyu Zhang, Wangnan Cao, Yufeng Li, Qiang Zeng, Shengzhi Sun   +9 more
doaj   +1 more source

Sperm quality before treatment in patients with early stage Hodgkin’s lymphoma enrolled in EORTC-GELA Lymphoma Group trials

Haematologica, 2009
Background Although widely recommended, cryopreservation of sperm is sometimes not performed for patients with Hodgkin’s lymphoma because of presumed poor sperm quality related to the disease.
Marleen A.E. van der Kaaij, Natacha Heutte, Jannie van Echten-Arends, John M.M. Raemaekers, Patrice Carde, Evert M. Noordijk, Christophe Fermé, José Thomas, Houchingue Eghbali, Pauline Brice, Caroline Bonmati, Michel Henry-Amar, Hanneke C. Kluin-Nelemans   +12 more
doaj   +1 more source

Paternity in mallards: effects of sperm quality and female sperm selection for inbreeding avoidance [PDF]

, 2017
Postcopulatory processes might play an important role in sexual selection. In theory, fertilization success could be controlled by females via selection of particular sperm within their reproductive tract, or it could be determined by sperm competition ...
Denk, Angelika G., Holzmann, Alois, Kempenaers, Bart, Peters, Anne, Vermeirssen, Etiënne L.M.   +4 more
core  

Multimodal Actuation and Environment Adaptive Strategies of Bio‐Inspired Micro/Nanorobots in Precision Medicine

Advanced Robotics Research, EarlyView.
An introduction for multidrive and environment‐adaptive micro/nanorobotics: design and fabrication strategies, intelligent actuation, and their applications. Various intelligent actuation approaches—magnetic, acoustic, optical, chemical, and biological—can be synergistically designed to enhance flexibility and adaptive behavior for precision medicine ...
Aiqing Ma, Han Gong, Jiacheng Ouyang, Liqi Chen, Tianfang Kang, Yiran He, Guojun Huang, Sidi Zheng, Ting Yin, Hong Pan, Lintao Cai   +10 more
wiley   +1 more source

Organophosphorous pesticide exposures and sperm quality [PDF]

Reproductive Toxicology, 2011
Many Americans are exposed to low levels of organophosphorous (OP) pesticides. It is unclear whether these exposures impact sperm production. We investigated whether there was an association between urinary OP insecticide metabolites and sperm concentration and motility in newly married men from a rural area of eastern People's Republic of China ...
Melissa J, Perry, Scott A, Venners, Xing, Chen, Xue, Liu, Genfu, Tang, Houxun, Xing, Dana Boyd, Barr, Xiping, Xu   +7 more
openaire   +2 more sources

Joint and individual associations between multiple vitamins and sperm quality in adult men

Frontiers in Nutrition
BackgroundSeveral studies have suggested that a healthy diet is associated with improved male fertility outcomes. However, the joint and individual associations between the status of multiple vitamins and sperm quality remain unclear.ObjectivesThis study
Wen Yao, Juan Zhang, Weihong Yan, Di Xie, Ping Tuo, Jie Liu, Xiaoling Zhao, Yiwen Xiong, Yang Li, Tiejun Pan   +9 more
doaj   +1 more source

Strong‐Magnetic Flexible Composites for Magnetically Responsive Soft Robots

Advanced Robotics Research, EarlyView.
This perspective provides an overview of the performance mechanisms, preparation methods, and applications of strong magnetic flexible composite materials in soft actuators (such as gripping, movement, and sensing), and further explores current opportunities and challenges.
Wenwen Li, Shuai Liu, Xinyi Wang, Xinglong Gong, Shouhu Xuan   +4 more
wiley   +1 more source

Effects of altered epididymal sperm transit time on sperm quality [PDF]

International Journal of Andrology, 2008
SummaryThe epididymal sperm transit time seems to have an important role in the process of sperm maturation, and it seems that alterations to the transit can harm the process. The aim of the present work was to evaluate the influence of altered sperm transit time through the epididymis on sperm parameters and fertility of rats, as well as the role of ...
Fernandez, Carla Dal Bianco, Porto, Elaine Manoela, Arena, Arielle Cristina, Kempinas, Wilma de Grava   +3 more
openaire   +3 more sources

Assessing risks of invasion through gamete performance: farm Atlantic salmon sperm and eggs show equivalence in function, fertility, compatibility and competitiveness to wild Atlantic salmon [PDF]

, 2014
Adaptations at the gamete level (a) evolve quickly, (b) appear sensitive to inbreeding and outbreeding and (c) have important influences on potential to reproduce.
Einum, Sigurd, Fleming, Ian A., Gage, Matthew J.G., Holt, William V., Yeates, Sarah E.   +4 more
core   +1 more source