Results 11 to 20 of about 161 (116)
辅助卵母细胞激活对经睾丸显微取精术获取活动精子患者卵胞浆单精子注射治疗结局的影响
Zhongshan Daxue xuebao. Yixue kexue ban, 2022 目的探讨辅助卵母细胞激活 （AOA） 对经睾丸显微取精术 （micro-TESE） 成功获得活动精子患者行卵母细胞胞质内单精子注射 （ICSI） 治疗的实验室和临床结局影响。方法回顾性分析2018年至2020年间经micro-TESE已获取活动精子的非梗阻性无精子症男性患者167人，配偶经常规超排卵获得成熟卵母细胞行ICSI治疗230个周期，比较分析ICSI后是否经钙霉素行AOA处理的实验室和临床结局差异。结果激活组 （G1） 和未激活组 （G2） 的女方平均年龄 （29.96 ± 4.61vs. 30.
张希 +4 more
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Application Research of Photochemical Vapor Generation and Inductively Coupled Plasma Mass Spectrometry [PDF]
, 2015 本论文建立了光化学蒸汽发生（PCVG）-电感耦合等离子体质谱（ICPMS）联用技术同时测定钴（Co）、砷（As）、锑（Sb）、硒（Se）、碲（Te）等五种元素及直接测定八种As和Se形态的方法。建立的在线分离测定方法具有快速和准确的特点，为Co、As、Sb、Se和Te的同时测定及As和Se形态的直接测定提供了新的技术手段。本论文分为4章，具体内容如下： 第1章介绍了环境中Co、As、Sb、Se、Te和不同As、Se形态的理化性质及危害，并对上述元素常用的分析测定方法和研究进展进行了概述 ...
朱建颖
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Rare Metals, EarlyView.ABSTRACT The development of efficient and stable bifunctional catalysts remains a key challenge for green hydrogen production via electrochemical water splitting. In this study, a bimetallic Mo/Fe‐doped CoP2 nanoleaf array anchored on carbon cloth (Mo, Fe‐CoP2@CC) was synthesized from zeolitic imidazolate framework‐L (ZIF‐L) via an ion‐exchange and low‐
Xiangqun Zeng +6 more
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Haiyang yu huzhao三角帆蚌和褶纹冠蚌均为我国主要淡水育珠蚌，其所产珍珠占世界珍珠总产量的90%以上，建立两种蚌精子冷冻保存技术，对种质资源保护和遗传育种具有重要意义。比较优化冷冻保护剂、平衡时间、精子包装、精子稀释剂及降温程序等关键技术参数，以精子活力和存活率作为保存效果评价指标，建立了三角帆蚌与褶纹冠蚌精子最优冷冻保存技术方案。结果表明，二甲基亚砜(DMSO)在5%和8%浓度下分别对两种蚌精子具有最佳保护效果，添加0.05 mol/L海藻糖保护效果显著提升；0.5 mL麦管为两种蚌精子的最适容器，优于0.25 ...
李 长志 +3 more
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Rare Metals, EarlyView.ABSTRACT MCrAlX coatings are widely used as bond coats in thermal barrier coating systems to protect turbine blades from high‐temperature oxidation. However, their oxidation resistance is often restricted by uncontrolled microstructures, surface roughness, and aggregation of reactive elements (REs). In this study, high‐repetition‐rate femtosecond laser
Wei Qian +7 more
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Effects of Nonylphenol and Estradiol on Gonad Development and Sperm Motility in Chinese Black Sleeper Bostrichthys sinensis [PDF]
, 2010 本文以中华乌塘鳢（BostrichthyssinensisLacépède）为研究对象，以壬基酚(4-nonylphenol，NP)和雌二醇（17β-estradiol，E2）为环境内分泌干扰物的代表，从幼鱼和成鱼两个层次上研究其对中华乌塘鳢性分化、幼鱼性腺发育以及对雄鱼精子发生和精子活力的影响，探讨养殖中华乌塘鳢雌雄同体产生的诱因及其作为水环境污染的指示生物的可行性，为发展鱼类健康养殖和环境保护提供科学依据。 在幼鱼暴露阶段，将30日龄的幼鱼暴露于1、10、100μg/L3个质量浓度的NP和10μg ...
左明杰
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Research Progress on Multiple Organ Damage and Mechanism of Cantharidin Poisoning [PDF]
, 2020 Cantharidin poisoning has been proven to cause multiple organ damage. Acute circulatory failure, acute renal failure, and multiple organ failure resulting from cantharidin poisoning are the main causes of death for patients with cantharidin poisoning ...
ZHANG You-you, YU Ya-lei, ZHANG Jie,et al
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War and Peace: Ogawa Takemitsu's Theological Engagement with State and Religion
Journal of Religious History, EarlyView.The Manchurian Incident of 1931 marked a pivotal moment in the rise of Japanese fascism. During the period from this incident until the Pacific War's defeat, dissent from the state's control was not tolerated, leading to coercive measures in religious communities. The Christian community, rather than devising theological reasoning to resist the state's
Eun‐Young Park, Do‐Hyung Kim
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Zhongguo shiyan zhenduanxue, 2007 目的探讨精子凋亡与精子密度、活力、形态关系。方法分析69例男性不育患者精液样本,采用计算机辅助精液分析进行精液参数检测,采用精子形态检测系统下人工修正方法进行精子形态分析,瑞-姬染色检测精子凋亡率。结果精子凋亡率与精子密度之间没有显著相关性（P>0.05）,精子凋亡率与精子活力、正常形态精子百分率之间有显著负相关性 ...
李然伟 +4 more
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Research Progress on Strontium Function in Foods [PDF]
, 2023 Strontium is of great significance to human health and participates in various physiological functions and biochemical effects. It has great prospects in the development of health products and natural medicines. Strontium not only has a protective effect
HUANG Xulai, GAO Yanan, ZHANG Yangdong, WANG Jiaqi, ZHENG Nan
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