Results 51 to 60 of about 10,041 (167)

A Mini Review on Evolution of High‐Entropy Alloy Design: From Experimental Approaches to Machine Learning Integration

open access: yesRare 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

Improvement of chaotic measuring circuits(混沌测量电路的改进)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2001
混沌测量是一种全新的测量原理,它能用极不稳定的测量系统实现高精度测量.本文对恒流式混沌测量电路作了进一步的改进.实验结果表明,它能明显提高混沌轨道的线性度和稳定性.
JINWen-guang(金文光)   +1 more
doaj   +1 more source

Cloning and expression patterns of stem cells induction-associated pluripotency factors in large yellow croaker Larimichthys crocea [PDF]

open access: yes, 2016
通过iPSCs技术获得iPSCs,建立个体特异的多能干细胞系,可为生长发育、种质资源保护、疾病防治及药物筛选研究等提供宝贵的实验材料,是一条新的从根本上解决大黄鱼养殖中的各种难题的有效策略模式。其中,多能性因子对iPSCs技术的研究是必不可少的,它们在调控胚胎干细胞(ESCs)的自我更新和多能性、原始生殖细胞(PGCs)的形成、早期胚胎发育、生殖细胞发生、器官发生、再生及增殖、生长、分化、凋亡等细胞过程等方面发挥重要作用。然而关于大黄鱼多能性因子的研究尚属空白。本文采用SMART ...
姜永华
core  

Herbivore species and patch heterogeneity modulate grazing‐induced shifts in soil nematode trophic structure and energy flux

open access: yesFunctional Ecology, Volume 40, Issue 1, Page 163-175, January 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Grazing by large herbivores is a critical factor shaping grassland biodiversity and ecosystem functioning worldwide, yet its consequences for soil communities remain poorly understood.
Quanhui Ma   +12 more
wiley   +1 more source

Study on Ensemble Algorithm for Multi-class Gene Microarray Datasets [PDF]

open access: yes, 2015
集成学习是当前机器学习领域的一个研究热点,具体到多分类问题,旨在通过一组差异的分类器共同解决起初的多分类问题,然后经过大多数投票等策略将各个分类器的输出结果进行融合。集成多分类算法相比于单个的优秀分类器往往性能上更准确、更稳定,同时还具有更强的泛化能力。在解决多分类问题时,基于纠错输出编码算法(ECOC)。这是解决多分类问题的一种灵活、高效的算法框架,关键要点是将多分类转变为多个二分类问题。此外,遗传规划算法可用于解决二分类问题,通过进化计算得到准确的分类规则。本文在已有的研究基础上 ...
曾志浩
core  

Citizens Turning Into Scientists: A Calling to Boost the Knowledge of the Public to Address the Environmental Crisis in the Brazilian Semiarid 从公众到科学家:助力提升公众知识以应对巴西半干旱地区环境危机

open access: yesIntegrative Conservation, Volume 4, Issue 4, Page 546-554, December 2025.
Desertification is increasing in the Brazilian Semiarid, leading to loss of species and ecosystem services, while precise data on biodiversity distribution and trends are lacking. Public engagement in scientific projects can improve ecosystem protection.
Lucas Rodriguez Forti   +3 more
wiley   +1 more source

Study on the expression and Functions of Nucleophosmin during the Apoptosis of the Human Hepatoma SMMC-7721 Cells

open access: yes, 2015
为了建立在姜黄素诱导肿瘤细胞凋亡过程中以Nucleophosmin为中心的分子调控网络,阐明Nucleophosmin的表达和定位变化在肿瘤细胞诱导凋亡过程中的调控作用机制,本论文在成功制备Nucleophosmin兔多克隆抗体的基础上,运用Westernblot和免疫荧光标记技术(IF)分析Nucleophosmin在姜黄素诱导凋亡前后的人肝癌SMMC-7721细胞中的表达和定位变化,同时构建带有Flag标签的正常定位(pBobi-cmv-NPM)以及核仁定位信号突变(pBobi-cmv-NPM ...
李晓
core  

生物信息学在药物不良反应研究中的应用 [PDF]

open access: yes, 2007
目的介绍生物信息学在药物不良反应(ADRs)机制研究中的应用。方法通过对国内外相关文献的分析,并结合实际研究经验,对生物信息数据库及软件在ADR s事件监测,ADRs机制研究及新药的不良反应预测等方面的应用进行简明而系统论述。同时,对目前Internet上公众可获取的ADR s相关的生物信息学资源进行一定的汇总和归类。结果事实表明,将生物信息学应用于ADR s机制研究和预测,是一种可行、前瞻和先进的尝试。结论生物信息学在ADR s研究中的应用可以促进药物毒理学的发展,成为理性新药开发的重要组成 ...
曾雅明, 杨淑佳, 王怡, 纪志梁
core  

Nutritional and Physiological Markers Are Mediated by Seasonality and Forest Access in Captive Coquerel's Sifakas 圈养科氏冕狐猴 (Coquerel's Sifakas) 的营养和生理指标受季节性和森林通道的影响

open access: yesIntegrative Conservation, Volume 4, Issue 4, Page 652-664, December 2025.
We profiled nutritional and physiological markers in captive sifakas, endangered primates from Madagascar, managed in expansive, non‐native forest enclosures. Variation in many markers reflects freely foraged diets and the energy required to maintain homeostasis under more naturalistic conditions.
Lydia K. Greene   +5 more
wiley   +1 more source

用系统思维构建传染病理论体系

open access: yesZhongguo shiyan zhenduanxue, 2013
20年来,医学信息量增长速度之快,使得最勤勉的学生,要赶上信息的"脚步"不是一件容易的事情,全面高效地学习是时代所趋,也是成为一个合格医生的核心因素。传染病学作为临床医学专业的必修课,传统教学法以病原体的生物学分类为基础单病种进行讲解,存在着显而易见的缺陷和不足。这与当前素质教育的主流思想相违背,与传染病学学科发展及培养高素质医学人才已不相适应,传染病教学模式的改革势在必行[1 ...
王静霞   +3 more
doaj  

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