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线粒体功能与肌少症的诊断

open access: yesZhongguo shiyan zhenduanxue, 2021
人类的衰老是一个复杂的生理过程,时间推移以及环境作用下引起的分子、细胞和机体结构与功能的随机改变。衰老过程中肌细胞中的肌纤维核和肌原纤维条纹消失,肌纤维数量减少,线粒体数量减少,肌球蛋白ATP酶活力下降等生理生化指标发生变化,临床上表现为肌力减退,骨骼肌总重量减少等,这些现象是进行性肌肉衰老的主要表征。因此,人们提出了肌肉衰老(muscle aging)这一医学新概念。
高玮男   +4 more
doaj  

Risk of Secondary Extinction in the Asian Songbird Trade, as Exemplified by the Selling of Crested Jayshrikes as Master Birds

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 33-45, March 2026.
The Asian Songbird Crises negatively affects so‐called master birds, species that are used to increase the song complexity of competitive songbirds. We assessed the trade in a master bird, the crested jayshrike, in Indonesia before and after its legal protection.
Vincent Nijman   +11 more
wiley   +1 more source

Investigating Drivers of Tiger Bone Glue Consumption in Vietnam 调查越南虎骨胶消费的驱动因素 Điều Tra Nguyên Nhân Dẫn Đến Tình Trạng Tiêu Thụ Cao Hổ Cốt Tại Việt Nam

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 115-124, March 2026.
We found the estimated use of tiger bone glue within the last 12 months to be 6.9%. We found a stated motivation of taking TBG to improve health, and by the suggestion of one's social group. We suggest reducing the acceptability of TBG as medicine and encouraging non‐animal‐based medicinal alternatives.
Elizabeth Oneita Davis   +5 more
wiley   +1 more source

NIR‐Responsive Nano‐Integrated Magnesium Phosphate Cement Promotes Bone Regeneration via Osteoblast‐Exosome‐Osteoclast Crosstalk

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT The limited osteogenic capacity of magnesium phosphate cement (MPC) has constrained its biomedical applications, underscoring the necessity to develop MPC with enhanced physical properties and bone‐forming capabilities. In this study, a multifunctional MPC system was developed by incorporating zoledronic acid‐loaded near‐infrared (NIR ...
Bin Wang   +8 more
wiley   +1 more source

小胶质细胞对大脑认知障碍的研究进展

open access: yesZhongguo shiyan zhenduanxue, 2023
小胶质细胞是由血液中的单核细胞演化而来,是中枢神经系统内特殊的免疫细胞,也是神经炎症的主要调节因素之一,在生理学上对宿主防御和组织修复至关重要。小胶质细胞在大脑老化的过程中起到重要作用,本文就此内容展开综述。1 大脑认知功能老化的机制大脑认知的变化是衰老的正常过程。大脑的概念推理、
张晓雯, 姜金兰, 吴晓冬
doaj  

The Effects of Working Memory Updating on Chinese Reading Comprehension Among Bilingual Primary School Students

open access: yesNew Directions for Child and Adolescent Development, Volume 2026, Issue 1, 2026.
Background Working memory updating is crucial in bilingual children′s second language (L2) reading comprehension. A robust updating ability is a cognitive key for children to successfully master L2 reading comprehension. Objective This study is aimed at investigating the effect of updating ability on the L2 Chinese reading comprehension among Uyghur ...
Guangxin Li   +3 more
wiley   +1 more source

Beyond Motivation: Modeling the Predictive Role of L2 Pride in Informal Digital Learning of English

open access: yesInternational 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

大电流冲击后ZnO压敏电阻交流老化特性的分析

open access: yesDianci bileiqi, 2014
针对ZnO压敏电阻经受多次8/20雷电流冲击后交流老化特性变化的问题,通过对ZnO压敏电阻老化机理的理论分析,并对ZnO压敏电阻样品进行不同次数的冲击老化实验后再进行交流老化实验测量其静态参数的变化,发现适当次数的大电流冲击会增强ZnO压敏电阻的交流耐受能力;ZnO压敏电阻的U1 mA和U0.1 mA在交流老化过程中呈现小幅上升、缓慢下降、快速减小的趋势,非线性系数则呈现持续缓慢降低而后快速下降的趋势;根据实验结果,得出电子陷阱及离子迁移是交流老化初始和中期的主要老化机理,而热破坏在老化末期起主要作用。
陈璞阳   +4 more
doaj  

Spatial Phylogenetic Analysis of Chinese Lizards: Insights Into Ecological Drivers and Conservation Gaps 中国蜥蜴系统发育的空间分析:生态驱动因素与保护空缺

open access: yesIntegrative Conservation, Volume 4, Issue 3, Page 430-441, September 2025.
Our study identifies southern China, including mountainous regions and islands, as key areas rich in phylogenetic diversity, and phylogenetic endemism of lizards that are currently under‐protected. Current protected areas however do not adequately cover regions that are critical for preserving the evolutionary history of lizards.
Tao Liang (梁涛)   +8 more
wiley   +1 more source

ZnO压敏电阻片的基础研究和技术发展动态 附视频

open access: yesDianci bileiqi, 1998
从非欧姆导电机理、老化机理的深化和完善、功能微观结构作用和控制、粉料预处理和制造技术等方面对zno压敏电阻片的基础理论研究进行了概括;并指出,从技术发展动态看,主要是降低残压比、提高单位体积的能量耐受能力、提高压敏电位梯度、提高长期老化性能。
1.西安交通大学电气绝缘研究所!西安   +1 more
doaj  

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