Results 31 to 40 of about 10,919 (165)
Zhongguo shiyan zhenduanxue, 2008 目的探讨精液生精细胞检查对无精症诊断的应用价值及临床意义。方法分析81例无精子症患者精液生精细胞学检查结果,与睾丸穿刺活检结果对照分析。结果精液生精细胞学检查对梗阻性和非梗阻性无精症分型诊断的符合率分别为85%、95.1%。41例非梗阻性无精症中,生精阻滞阶段在精子细胞、精母细胞、精原细胞分别为14例2、1例和6例。对同一患者精液细胞学检查与睾丸穿刺活检一致性分析中,生精细胞发育程度一致 ...
谷振环 +5 more
doaj
Recent Progress in the Development of Metal‐Based Radiosensitizations for Cancer Therapy: A Review
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Radiotherapy (RT) remains an indispensable means in cancer treatment; however, its therapeutic efficacy is often limited by tumor radioresistance and side effect of damage to healthy tissue. The advances in nanotechnology have propelled metal radiosensitizers to forefront of precision medicine.
Xiao‐Xia Wu +12 more
wiley +1 more source
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT High‐entropy alloys (HEAs) have emerged as a transformative class of materials distinguished by their complex chemical compositions, unique microstructures, and remarkable mechanical and functional properties. Traditionally, the discovery and optimization of HEAs have relied on conventional methods, including trial‐and‐error experimentation ...
Chrispin Ouko Zamzu +2 more
wiley +1 more source
EFFECT of PCBs (AROCLOR 1254) on SPERMATOGENESIS in TESTIS of MOUSE [PDF]
, 2009 多氯联苯（PCBs）是一类由人工合成的氯代芳烃类化合物，被称作潜在的内分泌干扰物。由于他们具有类雌激素和抗雄激素的性质，对雄性生殖系统造成极大危害，导致不育和一些性激素依赖的生殖功能丧失。他们能够引起内源性系统改变，类似天然性激素，并抑制性激素实现其功能。 本文目的是研究多氯联苯对雄性小鼠生殖系统的睾丸生长与发育的影响。雄性小鼠随机分成五组，每组21只。采用不同浓度Aroclor1254（0，0.5，5，50，500µg/kg）对小鼠进行灌胃染毒，每星期三次。暴露50天后处死小鼠，称其体重 ...
Joao Manuel Lopes Moreno
core +3 more sources
野生动物学报, 1996 本文研究了地龟的睾丸与输精管组织结构变化，性成熟的雄性地龟，曲细精管是一种复层上皮管道组成。上皮细胞可分两种，一种是产生精子的生精细胞，另一种是起支持、营养及有分泌等功能的支柱细胞。上皮外面有一薄层基膜。曲细精管可见有不同发育阶段的雄性生殖细胞，从精原细胞到精子细胞，层层排列在管壁，愈是成熟的细胞便愈靠近小管的中心，最中心的就是精子。繁殖期间，观察了输精管的组织结构，管壁由粘膜、肌层和外膜三层组成。管腔内为大量成熟精子所充满，活体时具有活动性。
胡增高, 郭超文, 胡慧玲
doaj
Anatomical and Histological Studies on the Male Reproductive System of Thenus orientalis [PDF]
, 2000 【中文摘要】 东方扁虾雄性生殖系统由精巢、输精管及雄性生殖孔三部分组成 ,输精管可分为前、中、后三段。精巢由卷绕的前、后收集管及挂靠其上的许多生精腺囊所组成。同一腺囊内的精细胞发生基本同步 ,而不同腺囊内则可以不同步。收集管的主要功能是将精细胞团输送至输精管。精荚在输精管内运行时一直进行着精子的形成过程 ,直至精子成熟。位于输精管末段环肌层外的索带状细胞团被认为是造雄腺 【英文摘要】 The male reproductive system of Thenus orientalis is ...
叶海辉 +3 more
core
Review of additively manufactured zinc alloys by laser powder bed fusion for biomedical applications
Rare Metals, Volume 44, Issue 11, Page 8262-8291, November 2025.Graphical abstract AbstractZinc (Zn) and its alloys have emerged as promising candidates for biomedical materials, owing to their controlled degradation kinetics, intrinsic biocompatibility, and the release Zn2+ ions which are known to promote bone regeneration and tissue healing.
Xuan Yang +5 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2013 1临床资料患者,男,24岁,建筑工人,婚后三年不育来我院就诊,性生活正常,未避孕,妻子未孕。体格检查:男性第二性征明显,外生殖器发育正常,双侧睾丸体积约16ml,质地正常。无其他疾病史。精液检查:精子浓度1.22×106/ml,a级10.53%,b级10.53%,c级5.26%,d级73.68%,活率30%,精液量6.2 ml,pH7.0。血清生殖激素检查 ...
李琳琳 +6 more
doaj
A Review on the Androgenic Gland of the Decapod Crustacea [PDF]
, 2001 【英文摘要】 YE Hai Hui\ LI Shao Jing\ WANG Gui Zhong (Department of Oceanography, Xiamen University\ Xiamen\ 361005,China)福建省重中之重“福建省海洋生物优良种质和生物活性物质的应用基础研究 ...
叶海辉, 李少菁, 王桂忠
core
Beyond Motivation: Modeling the Predictive Role of L2 Pride in Informal Digital Learning of English
International Journal of Applied Linguistics, Volume 35, Issue 4, Page 1938-1952, November 2025.ABSTRACT This study investigates the role of second language (L2) pride—an understudied affective factor—in shaping learners’ language learning motivation and involvement with informal digital learning of English (IDLE). Drawing on questionnaire data from 1388 Chinese university EFL students, the study employs structural equation modeling to examine ...
Minlin Minny Zou +3 more
wiley +1 more source