Results 21 to 30 of about 10,833 (166)
Importance of connectivity for carnivore richness and occupancy in fragmented biodiversity hotspots
Conservation Biology, Volume 39, Issue 6, December 2025.Abstract Structural connectivity affects wildlife movement between habitat patches, contributing to the persistence of wildlife populations and their resilience to human‐induced and environmental changes. However, its importance to wildlife population persistence remains unclear, particularly in fragmented landscapes, where there are additional co ...
Cindy M. Hurtado +12 more
wiley +1 more source
Toxicity of BaP exposure during embryonic stage in zebrafish: the mechanisms involved [PDF]
, 2016 多环芳烃（PolycyclicAromaticHydrocarbon，PAH）是环境中一类分布广泛的持久性有机污染物。苯并（a）芘（Benzo(a)pyrene，BaP）作为代表性的PAH具有包括神经毒性和生殖毒性在内的多种毒性。截至目前，关于BaP神经毒性的研究大多集中于高浓度或短期的暴露实验，而环境水平浓度下、长期的BaP暴露是否能引起同样的神经毒性则研究得较少；此外，胚胎时期低浓度BaP暴露对成年阶段的神经毒性、生殖毒性效应及其机制研究更为少见。因此本研究以斑马鱼为模式动物，分别进行环境水平浓度 ...
高东旭
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Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 4, Page 433-442, October 2025.ABSTRACT Objective Currently, there are several surgical approaches to manage fetal open spina bifida (OSB), namely postnatal surgical repair, open fetal surgery and its minimally invasive alternative, fetoscopic repair. Our objective was to determine the optimal surgical approach for OSB, weighing the benefits and risks to the fetus and the pregnant ...
Y. Kunpalin +6 more
wiley +1 more source
World Medical &Health Policy, Volume 17, Issue 3, Page 411-424, September 2025.ABSTRACT Population aging impacts the utilization of health services, especially in Emergency Departments (EDs). A rising share of older adults in the US report ED use, especially frequent ED use, defined as ≥ 4 visits annually. Prior works have examined frequent utilization of EDs among geriatric populations, but no study has focused on age‐based ...
Uma Kelekar +5 more
wiley +1 more source
野生动物学报, 2008 1994～1996年经连续3a对丹顶鹤换羽与产卵关系的观察研究表明,在沈阳地区产卵期为4月初至6月中旬,最晚可到7月初;其中产受精卵时间是从4月初至5月末（45～49d）。丹顶鹤换羽前受精率较高（70%～100%）,换羽后受精率低或基本不受精。
宋艳珠, 谭桂芹
doaj
Politics &Policy, Volume 53, Issue 4, August 2025.ABSTRACT We study the implications of regime personalization on the incentives of political elites to politicize their policy agenda and express loyalty to the ruler. Because revering the autocrat is one of the observable manifestations of personalization, while the process of personalization may be, in turn, influenced by an increased prevalence of ...
Alexander Baturo, Nikita Khokhlov
wiley +1 more source
Functional interaction of mammalian sperm with the oocyte-cumulus complex in fertilization [PDF]
, 2010 Thesis (Ph. D. in Biotechnology)--University of Tsukuba, (A), no.
Kang Woojin, 康 宇鎭
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Functional Ecology, Volume 39, Issue 6, Page 1550-1566, June 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Forests store substantial amounts of soil organic carbon (SOC), but SOC stocks differ strongly between forest ecosystems dominated by arbuscular mycorrhizal (AM) or ectomycorrhizal (EcM) fungi.
Mengxu Zhang +10 more
wiley +1 more source
单精子冷冻和常规冷冻对显微取精患者的胚胎培养及妊娠影响的比较
Zhongshan Daxue xuebao. Yixue kexue ban, 2023 目的比较单精子冷冻和常规冷冻对显微取精患者的胚胎培养及妊娠影响。方法回顾性分析自2018年1月至2021年12月于中山大学附属第六医院生殖医学研究中心行显微镜取精术患者的临床资料，行单精子冷冻共39例307枚成熟卵子为单精子冷冻组，通过SPSS统计软件倾向性评分匹配女方基本助孕信息1：1匹配选择对照组，为常规冷冻组，共410枚成熟卵子，分析单精子冷冻与常规冷冻两组的受精、胚胎培养及移植后妊娠情况。结果单精子冷冻组和常规冷冻组的年龄、体质量指数（BMI）、不孕年限、基础基础卵泡刺激素（FSH ...
李婷婷, 刘贵华, 张靖, 孙桂花
doaj
Investigate the Effect of Resveratrol on Postovulatory Aging of Mouse Oocytes [PDF]
, 2016 大多数辅助生殖技术在体外操作，随着操作时间的延长，未受精的第二次减数分裂中期的卵母细胞会经历老化的过程，此过程限制了卵母细胞发展的潜力和受精的能力，因此如何延缓卵母细胞的老化为操作争取更多的时间是提高辅助生殖技术成功率的关键。然而，至今仍没有合适的方法能克服卵母细胞在体外发生的老化。本文的研究目的是探讨白藜芦醇是否可以改善排卵后老化的卵母细胞在体外发生的不良结局，之前有研究表明白藜芦醇可以提高不同物种在体外受精的概率。我们用小鼠第二次减数分裂中期的卵母细胞作为对照组 ...
刘蕊
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