Results 11 to 20 of about 10,427 (161)

Cavity‐Confined Indium Single‐Atom Catalysts Enable Localized Electron Enrichment for Highly Efficient and Selective Photocatalytic CO2 Reduction

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Single‐atom catalysts are attractive for CO2 photoreduction due to their maximized atomic utilization and tunable electronic structures. In this study, indium (In) single atoms were incorporated into graphitic carbon nitride (CN) through an impregnation‐assisted thermal polycondensation strategy.
Xueying Guo   +6 more
wiley   +1 more source

TNF induced RIP3-dependent NADH depletion [PDF]

open access: yes, 2015
肿瘤坏死因子(tumornecrosisfactor,TNF)能诱导L929细胞产生相互作用蛋白3(receptor-interactingprotein3,RIP3)依赖的程序性细胞坏死,并且在该过程中,胞内的线粒体产生的活性氧(reactiveoxygenspecies,ROS)会积聚,同时当RIP3的表达水平敲低时,胞内ROS的积聚也受到了抑制。但是RIP3如何影响ROS的具体机制仍不清楚。 因为ROS的产生主要在线粒体电子传递链上,而还原型辅酶Ⅰ(NADH)和还原型辅酶Ⅱ(NADPH ...
张丽芳
core  

Developing HMME‐Conjugated NIR‐II Activated Carbon Dots Nanospray for the Treatment of MRSA Biofilm Infections in Diabetic Wound via PTT/CDT/SDT

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Diabetic wound infections are a common complication of diabetes, which severely impact patients' quality of life. Effective treatment of diabetic wound infections remains one major challenge in the clinic, partially due to the formation of bacterial biofilm and antibiotic resistance.
Liang Zhou   +8 more
wiley   +1 more source

Malignancy-associated metabolic profiling of human glioma cell lines using 1H NMR spectroscopy [PDF]

open access: yes, 2015
胶质瘤恶性转化的原因和机制不明,给临床诊疗带来极大困难。越来越多的研究表明肿瘤恶性转化与细胞代谢紊乱密切相关,但胶质瘤恶性转化相关的细胞代谢特点目前尚不清楚。因此,探寻不同恶性程度胶质瘤细胞的代谢轮廓,将有助于开发监测胶质瘤恶性进展的非入侵式生物标志物和靶向代谢通路的治疗策略。本研究收集5种不同病理级别瘤组织来源的人脑胶质瘤细胞系(CHG5/SHG44/U118/U87/U251),其中CHG5和SHG44为WHOII级来源;U118,U87和U251为WHOIV级来源。体外培养后,首先通过侵袭能力 ...
邵巍
core  

A Multifunctional MXene/CNF/PVB Fabric via Layer‐by‐Layer Construction for Electromagnetic Interference Shielding, Joule Heating, and Infrared Stealth

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT The rapid advancement of 5G communication technology has intensified electromagnetic pollution, creating an urgent demand for flexible multifunctional fabrics with efficient electromagnetic interference (EMI) shielding performance. This study proposes a novel material‐stacked construction strategy to fabricate multifunctional MXene/cellulose ...
Zong‐Kai Yan   +9 more
wiley   +1 more source

直流电压下复合绝缘子表面电荷积聚的仿真研究

open access: yesGaoya dianqi, 2016
随着特高压电网的建设,复合绝缘子以其优异的性能已被大量采用,然而表面电荷积聚将导致其沿面闪络电压下降,影响电网运行的稳定性。为了研究表面电荷的积聚效应,建立了复合绝缘子二维轴对称模型,并使用COMSOL软件对该模型进行了研究。研究表明:伞群表面是电荷积聚的主要位置,当其积聚电荷的极性不同时,对原电场分布的影响也不同。分析认为,负极性电荷积聚为电子越过伞群向前发展创造了有利条件,缩短了爬电距离,这可能是导致复合绝缘子闪络电压下降的原因;又对表面电荷积聚情况进行了实验测量 ...
李卓   +5 more
doaj  

冻融循环对黑土团聚体稳定性与微结构特征的影响

open access: yesShuitu Baochi Xuebao, 2022
冻融循环作用下的土壤结构变化被认为是融雪期黑土坡面土壤侵蚀加剧的主要原因之一, 土壤团聚体稳定性与团聚体微结构是影响土壤可蚀性的关键因子。基于控制条件土壤冻融模拟试验, 采用湿筛法、扫描电子显微技术(SEM)和Image-Pro Plus(IPP)图像分析处理相结合的方法, 分析了冻融循环过程中黑土团聚体微结构的动态变化特征, 阐明了土壤团聚体水稳定性与团聚体微结构特征的内在联系。结果表明: (1)冻融循环对黑土团聚体水稳定性整体呈破坏作用。该作用在微观层面上表现为冻融循环驱动土壤孔隙趋于长条状发育 ...
王文刚   +4 more
doaj  

Mindin is up-regulated during colitis and enhances inflammation by activating the transcription activity of NF-κB protein family [PDF]

open access: yes, 2015
炎症性肠病(IBD)的发生,被认为是遗传、环境和黏膜免疫三方面因素共同作用的结果,而肠黏膜异常的免疫应答又是发病的关键因素之一。在炎症局部,炎性细胞的招募和激活依赖各种细胞膜受体及整合素与细胞基质(ECM)间的相互作用。细胞外基质蛋白Mindin是Mindin/F-spondin家族成员,在小鼠炎症模型中,有多项研究表明Mindin在免疫应答过程中扮演重要角色,但对于其在炎症中的功能和调控机制研究较少。故本课题拟探索肠炎中Mindin的表达水平及其在炎症中的信号调控机制。 本课题研究中 ...
李萍
core  

Rational Design of Multifunctional Nano–Architected Coatings for Bipolar Plates in Proton Exchange Membrane Fuel Cells

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Proton exchange membrane fuel cells (PEMFCs) require advanced bipolar plate coatings to enhance efficiency, durability, and commercialization potential. This review presents a systematic framework for evaluating and designing bipolar plate coatings, integrating material selection, performance metrics, deposition techniques, and future ...
Shijie Li   +12 more
wiley   +1 more source

直流GIL中附着导电微粒对绝缘子表面电荷积聚特性的影响分析

open access: yesGaoya dianqi, 2017
导电微粒污染是直流GIL绝缘强度劣化的重要影响因素,为研究其对柱式绝缘子表面电荷积聚的影响,文中搭建了考虑导电微粒情况的电荷测量平台。首先探究了绝缘子表面电荷积聚的时间效应,并在此基础上进一步研究了微粒附着位置、微粒长度、微粒直径对表面电荷积聚的影响。结果表明:附着绝缘子表面的导电微粒可引起表面电荷的积聚激增,其中与电极接触的微粒引起的电荷激增量更为显著;随微粒长度增加,微粒引起电荷积聚增强,而微粒直径对电荷积聚的影响并没有明显的线性规律;与正电荷相比,负电荷更易发生积聚。
李伯涛   +5 more
doaj  

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