Results 31 to 40 of about 18,840 (167)
Zhongguo shiyan zhenduanxue, 2015 精液是由5%的精子和95%精浆构成的复合液,主要为睾丸、附睾、精囊、前列腺、尿道球腺分泌的液体。精子由睾丸产生,是生殖细胞经一系列有丝分裂形成的,在附睾中未成熟的精子最终形成有动力的精子,整个过程需要70天。精浆的化学成分十分复杂,包含各种蛋白、酶类、激素、微量金属元素等,是运送精子的载体,并为精子提供存活所需的能量和营养物质[1,2]。精液中有形成分除精子外,尚含少量白细胞（
苏春霞 +7 more
doaj
Haiyang yu huzhao胭脂鱼(Myxocyprinus asiaticus)是亚洲特有的淡水珍稀鱼类，但由于人类活动和生态环境的变化，胭脂鱼数量急剧减少，研究其精子冷冻保存技术及建立精子冷冻保存库，对种质资源的保护和遗传育种具有重要意义。选取健康的雄性胭脂鱼，经人工催产后获得成熟精子，首先对4种精子稀释液种类(D-17、D-15、D-20、人工精浆A)、4种抗冻剂种类(DMSO、GLY、MeOH、PG)及4种DMSO抗冻剂浓度(6%、8%、10%、12%)进行筛选，其次选取筛选后冷冻效果最好的冻精与鲜精做受精实验 ...
丁 小雨 +8 more
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Identification and characterization of a gene required for spermatogenesis in the fruit fly Drosophila melanogaster [PDF]
, 1998 Thesis (Ph. D. in Science)--University of Tsukuba, (B), no.
Endo Keita, 遠藤 啓太
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Precise control of chemical ordering in bimetallic nanocatalysts offers a route to decouple activity and selectivity in acetylene hydrogenation, but direct atomic‐scale evidence linking surface order to catalytic performance is scarce. Here, we tune Pd‐Cu nanoalloys from chemically disordered to highly ordered states by composition control and
Fan Xue +5 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
Rare Metals, Volume 45, Issue 3, March 2026.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
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2012 目的探讨不同病因对男性不育患者精子形态的影响。方法 426例男性不育患者根据病因分为7组:精索静脉曲张组（68例）、慢性前列腺炎组（127例）、精索静脉曲张合并慢性前列腺炎组（36例）、特发性弱精子症组（42例）、少精子症组（115例）、小睾丸症组（21例）及其它组（17例）,用瑞-姬氏染色法进行精子形态分析。以78例供精者精液检查结果作为对照。结果不育患者的形态正常精子百分率明显低于对照组 ...
王玉丰, 吴玲, 陈雪银
doaj
マウス精子の凍結保存感受性に関する量的形質遺伝子座（QTL）解析 [PDF]
, 2018 筑波大学 (University of Tsukuba ...
LIU JINSHA, 刘 金莎
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Plasma‐Boosted Bi2Mn4O10 Electrocatalysis Enables Real‐Time On‐Board Monitoring of CO2 in Exhaust
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Real‐time monitoring of CO2 concentration in automobile exhaust is critical for effective carbon emission reduction. However, the inherently inert nature of CO2 poses a significant challenge for achieving accurate and efficient detection in the exhaust automobile environment.
Aining Jiang +6 more
wiley +1 more source
MALE STERILITY : A CLINICAL OBSERVATION [PDF]
, 1975 A clinical observation was made on male outpatients who visited the Department of Urology, Niigata University Hospital during 2 years, 1971 and 1972 with chief complaints of infertility.
佐藤, 昭太郎 +2 more
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