Results 41 to 50 of about 7,866 (160)
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Enhancing the strength of 7000 series high‐strength Al alloys remains a critical challenge to meet the demands of increasingly demanding service environments. In this study, a novel approach is proposed for developing high‐performance Al alloys through a combination of powder mechanical alloying, powder press‐forming, rolling deformation, and ...
Peng‐Fei Ji +4 more
wiley +1 more source
Studies on Biology of Early Developmental Stages of Babylonia [PDF]
, 2016 东风螺(Babylonia)隶属软体动物门(Mollusca)、腹足纲(Gastropoda)、新腹足目(Neogastropoda)、东风螺科(Babyloniidae)，分布于中国东海、南海以及东南亚、日本和印度洋沿岸，因肉质鲜美、市场接受度高，而且生长速度快、养殖产量大，被认为是本世纪最具开发前景的优质海产腹足类之一。方斑东风螺和泥东风螺是我国常见的东风螺种类，对于其早期发育阶段的形态学以及多种组学进行研究，不仅在理论研究上具有科学意义，而且在生产实践上也具有重要的指导意义 ...
沈铭辉
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT The central challenge in the development of high‐performance electromagnetic wave‐absorbing materials lies in achieving an optimal balance between impedance matching and attenuation characteristics. This is particularly critical for purely dielectric absorbers, where precise tailoring of the real (ε′) and imaginary (ε″) parts of the complex ...
Zhixiao Wang +7 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2000 【目的】明确尸食性蝇类卵的形态, 以便于在医学和法医学中的应用。【方法】用扫描电镜机观察杭州地区 4 种 尸食性蝇类卵的形态。【结果】丝光绿蝇、大头金蝇、巨尾阿丽蝇和厩腐蝇卵的超微结构形态各异, 卵的大小、表面形态、中区、 孵出线、卵孔和垂柱皆为重要的鉴别特征。【结论】通过卵壳超微结构可区分常见尸食性蝇类。
王江峰
doaj
The Ultrastructural and Histochemical Study of Anther Development in Lycium barbarurn L. [PDF]
, 2006 应用电镜和细胞化学技术，分别对宁夏枸杞（LyciumbarbarurnL.）花药发育及营养物质积累特点，做了超微结构研究和组织化学分析。主要实验结果如下：1．细胞质等变化特点枸杞小孢子发生和雄配子体发育过程中,主要细胞器发生了2次”细胞质改组”现象。第一次在小孢子母细胞减数分裂的前期Ⅰ--末期Ⅱ，核糖体数量减少,线粒体结构简化，到末期Ⅱ以后，核糖体数量增加,线粒体结构逐渐恢复；第二次在小孢子液泡化以后,核糖体和线粒体数量减少，质体肿胀,到二胞花粉早期,这些细胞器再度渐渐恢复正常。这些现象表明 ...
徐青
core
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT With increasing complex requirement in organic pollution environment, the development of actual electromagnetic wave (EMW) absorbers with high EMW absorption performance and self‐cleaning pollution function is becoming a significant challenge.
Shou‐Hang Lv +8 more
wiley +1 more source
Lactacystin对体外C6胶质瘤细胞超微结构影响的研究
Zhongguo shiyan zhenduanxue, 2008 目的探讨蛋白酶体抑制剂Lactacystin对体外C6胶质瘤细胞超微结构的影响。方法Lactacystin处理体外培养的C6胶质瘤细胞,HE染色后光镜观察细胞的死亡情况,锇铀铅染色后透射电镜观察细胞超微结构变化。结果Lactacystin处理体外C6胶质瘤细胞24 h后,光镜下见胞浆浓缩深染,胞核染色质致密浓缩,透射电镜下见细胞表面微绒毛消失,核皱缩,染色质致密浓缩、边集。结论蛋白酶体抑制剂Lactacystin可以诱导体外C6胶质瘤细胞凋亡。
王海峰 +4 more
doaj
The Development and Application of Tissue Engineering Corneal Epithelium Derived from the Plant [PDF]
, 2017 目的：本文以洋葱表皮膜（OnionEpithelialMembrane，OEM）作为培养角膜上皮细胞的支架材料，探究植物源性材料作为构建组织工程角膜材料的可行性。 方法：通过透明度实验评估OEM的光学特性；通过扫面电镜和透射电镜观察OEM表面特征和超微结构；以OEM为载体培养不同类型细胞系和原代细胞，并与培养皿比较其贴壁生长状态和细胞形态；将分离的兔角膜上皮细胞接种到OEM、胶原Ⅳ包被OEM、PETM（PolyethyleneTerephthalateMembrane）上，观察兔角膜上皮细胞 ...
陈佩
core
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Diffusion bonding (DB) of near‐α titanium alloys requires high temperatures, which can cause grain coarsening, structural deformations, and degradation of the workpiece's mechanical characteristics. In this study, thermal hydrogen processing (THP) was applied to Ti65, combined with selective magnetron sputtering of a Ti‐Al thin film to promote
Liang‐Wei Kang +9 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2006 目的通过观察梗阻性黄疸肝脏超微结构改变进一步探讨其损伤机制。方法采用Wistar大鼠72只,分成胆总管结扎（Common bile duct ligation,CBDL）组、假手术组和正常对照组,每组24只,制成梗阻性黄疸动物模型,利用透射电子显微镜观察并分析梗阻性黄疸大鼠肝组织超微结构及其功能改变。结果肝细胞核形态异常、固缩,线粒体脊断裂、内质网减少且肿胀,毛细胆管扩张、内有胆泥淤积。结论内毒素、肝细胞缺血和Kupffer细胞功能受损可能与梗阻性黄疸肝脏损伤有关。
汲崇德 +4 more
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