Results 21 to 30 of about 18,840 (167)
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Single‐atom catalysis hinges on fundamental challenges in precisely controlling metal‐support interactions and rationally regulating metal–adsorbate relationships. Herein, we report a universal strategy for constructing highly efficient and well‐defined Cu(I) single‐atom catalysts based on a trifurcate AlL3 molecular support.
Donghui Zhang +9 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2014 为了解无精子症、少精子症、弱精子症男性不育与染色体核型异常关系,对124例确诊为无精子症、少精子症、弱精子症男性不育行染色体核型检查,统计染色体核型异常状况分析如下。1对象与方法1.1研究对象2005年1月至2011年12月我院生殖门诊确诊为无精子症、少精子症、弱精子症男性不育患者,
邓国生, 张炬光, 何娟
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
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT High‐entropy alloys (HEAs) have attracted considerable interest from researchers owing to their tunable chemical compositions, exceptional structural stability, and promising catalytic properties. However, their large‐scale application is often hindered by complex manufacturing techniques and poor durability.
Sheng Guo +9 more
wiley +1 more source
野生动物学报, 2018 为了解麋鹿新鲜精液的品质和精子表面的结构特征,对12头处于繁殖季节的雄性麋鹿采用电刺激法获得新鲜精液,选用高活动率的精子12例制作标本,经扫描电镜对精子形态进行观察。结果发现,麋鹿精子属于典型的鞭毛精子,长约42 μm,头部呈梨形,长约6.4 μm,宽约4 μm,电镜下可见一定比例的畸形精子,通过对精子畸形的部位和原因进行分析,提出了精子样品制备时的注意事项。
陈 颀 白加德 李俊芳 李夷平 张树苗
doaj
カサカイ ノ ハッセイ カテイ ト ジュギョウ デノ カツヨウ [PDF]
, 2007 Limpets (Mollusca: Gastropoda) are some of the most abundant animals in the intertidal zone of rocky shores. Here I report methods for collecting and culturing the limpets, especially Nipponacmea fuscoviridis, and describe developmental processes in this
出口 竜作
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Periodontitis is a chronic infectious oral disease triggered by periodontopathogenic bacteria, resulting in the progressive inflammation and destruction of the tissues surrounding teeth. To achieve reprogramming of the infectious microenvironment for periodontitis therapy, a nanoformulation was proposed by loading polydopamine (PDA) with ...
Hao Liang +14 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2006 目的探讨男性不育患者病毒感染状况与精子密度、活率和精子形态的关系。方法分析469例男性不育患者病毒感染状况,采用改良间接ELISA法进行病毒检测,用伊红-Y染色法分析精子活率,计算机自动分析精子活力,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。结果469例男性不育精液样本中,检出病毒阳性率为8.32%,其中单纯疱疹病毒Ⅰ型1.92%,单纯疱疹病毒Ⅱ型2.56%,人类巨细胞病毒2.56%,风疹病毒1.28%。病毒感染阳性组精子密度和精子活率显著低于病毒感染阴性组（P0.05 ...
李哲 +5 more
doaj
Study on polymorphism of sperm in Drosophila obscura species subgroup (Diptera: Drosophilidae) [PDF]
, 1987 Thesis--University of Tsukuba, D.Sc.(B), no. 349, 1987.
Takamori Hisaki, 高森 久樹
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Rare Metals, Volume 45, Issue 3, March 2026.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
wiley +1 more source