Results 41 to 50 of about 30,694 (239)
野生动物学报, 2010 雌性大熊猫体重约100 kg,但所产胎儿仅100 g左右,只有母体体重的千分之一。这是因为大熊猫胚胎延迟着床,即受孕后,受精卵在子宫内呈游离状态,直到后期才开始着床发育 ...
张金国
doaj
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
Deep fakes and the Artificial Intelligence Act—An important signal or a missed opportunity?
Policy &Internet, Volume 16, Issue 4, Page 783-800, December 2024.Abstract The Artificial Intelligence Act (AI Act) adopted by the European Union might serve as a global regulatory reference point. Heated negotiations over the AI Act have shown that reconciling the interests of numerous stakeholders is not an easy task.
Mateusz Łabuz
wiley +1 more source
野生动物学报, 2011 精液品质评定的常见方法有精子活力、畸形率和顶体完整率等指标,但这些指标不能评定精子的真实受精能力。目前低渗膨胀试验作为检验精子膜功能的一种方法得到广泛认可,利用它可检验具有完整膜的精子是否具有生化活性。本试验通过对冷冻2只黑猩猩精液进行低渗膨胀来评定冷冻精子的膜完整性。试验结果显示,本研究中的黑猩猩的冷冻精子在低渗溶液中的膨胀率较高,表明试验黑猩猩的冷冻精液有较高的活力,精子具有较高的穿透率和受精能力。
黄志宏 +5 more
doaj
Studies on the reproductions in two tadpole shrimps, Triops numidicus and Triops longicaudatus (Crustacea: Branchiopoda: Notostraca) [PDF]
, 2006 "September 2006"--CoverThesis (Ph. D. in Science)--University of Tsukuba, (A), no.
三本 博之
core
World Medical &Health Policy, Volume 16, Issue 4, Page 520-546, December 2024.Abstract The Affordable Care Act (ACA) continues to shape US politics at the elite level. We know less about whether this conflict still carries over to the broader public. Moreover, we know little about the degree to which the conflict reaches into its various policies and whether the policy threats to the ACA can affect public opinion.
Simon F. Haeder, Steven Sylvester
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2007 【目的】探讨常规体外受精胚胎移植（in vitro fertilization and embryo transfer,IVF-ET）不受精时,应用卵母细胞单精子显微注射（intracytoplasmic sperm injection,ICSI）技术进行补救授精的临床意义。【方法】2001年8月～2005年8月,在499个常规IVF-ET周期中有25个周期完全不受精,进行补救ICSI,并与同期实施的179个正常ICSI周期进行比较。【结果】补救ICSI组与正常ICSI组比较,HCG日平均血清雌二醇水平、
李晓虹 +8 more
doaj
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
core
Exploring critical factors in referral systems at different health‐care levels
World Medical &Health Policy, Volume 16, Issue 4, Page 729-744, December 2024.Abstract Background A consistent referral system and patient patronage are the primary connections between the three tiers in the healthcare delivery system. Patients were scheduled to visit primary care clinics for the first time. Subsequently, patients are moved to more distinguished healthcare facilities to receive additional care.
Farrukh Jamal +5 more
wiley +1 more source