Results 71 to 80 of about 50,905 (223)
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Sodium metal batteries hold significant promise for large‐scale energy storage due to the high theoretical capacity and abundant sodium sources, yet sodium‐metal anodes are hindered by dendrite propagation, unstable solid electrolyte interphase, and poor cycling efficiency arising from uneven Na deposition and volume changes.
Nan Xing +7 more
wiley +1 more source
Responses of Marine Proteorhodopsin-Containing Bacteria to Ocean Acidification [PDF]
, 2016 海洋细菌是海洋生态系统中生物量最大的组成部分，它们种类繁多、数量巨大，在全球的物质循环及能量代谢中发挥着举足轻重的作用。变形菌视紫质携带菌（PRCB）是一类具有特殊功能的海洋细菌，它们在利用现成有机物的同时，通过变形菌视紫质（PR）蛋白将H+泵到细胞膜外，由此产生的H+浓度梯度耦合如ATP合成酶等，可实现将光能转化为化学能，进而帮助其度过诸如碳源匮乏、营养物质稀少、无机离子不足，氧气分压降低等不利环境。PR蛋白是PRCB应对复杂多变的自然环境所携带的“工具包”。 人类活动造成大气二氧化碳浓度的持续升高 ...
张飞
core
The Role of Microorganisms in the Geochemical Iron Cycle [PDF]
, 2016 铁元素虽然只在地壳含量中位列第4,但却是地球上分布最广的变价金属元素之一,微生物介导的铁循环及其与生源要素碳、氮、氧和硫等耦合的氧化还原反应是微生物地球化学循环的重要驱动力.由于铁循环过程中氧化态三价铁Fe(Ⅲ)在环境p H条件下大多以不溶状态存在,因而由其参与的地球化学循环进程通常较为缓慢.研究表明,微生物在铁元素的地球化学循环过程中起着举足轻重的作用,并在该过程中参与矿物的生成与转化.近年来的最新研究发现,参与地球化学铁循环的微生物之间,微生物与矿物之间,以及矿物介导的微生物之间存在着多样的相互作用,
刘芳华 +5 more
core +1 more source
地矿测绘, 2020 当地下煤层被开采之后,由于重力作用,地表会出现塌陷的状况。本文就煤矿开采引发地表变形的原因,煤矿开采引发地表变形的动态测量方法以及煤矿开采后地表变形的补救措施展开具体论述。
东京 曹, 金正 王, 小龙 程
semanticscholar +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The inherent brittleness of hardmetals stems from the rigid covalent bond in the ceramic matrix and the sharp ceramic/metal interface, which restricts the nucleation and motion of dislocations. In this study, a novel strategy is proposed to activate significant dislocation behaviors in the WC matrix by employing a non‐equiatomic CoNiFeCr ...
Cheng Qian +9 more
wiley +1 more source
Gaoya dianqi, 2005 介绍了变压器绕组电容测试和短路阻抗试验两个判断变压器绕组变形的试验及判断方法,通过对故障变压器试验及吊罩结果的分析,证明两个方法可以与变压器绕组变形试验结合判断绕组变形程度。
罗铮
doaj
, 1998 鱼类浸制标本的制作技术冯恩慧陈炜（中国科学院水生生物研究所淡水鱼类博物馆，武汉４３００７２）鱼类标本的制作通常采用浸制或剥制，由于小型有鳞鱼类的皮薄，且鳞片极易脱落，不易剥制。再则，浸制标本形态更逼真，不易变形。分类研究中多根据其外部形态特征为鉴别依..
冯恩慧,陈炜
core
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT This study demonstrates a new strategy for modifying the boron content to address stress‐relief cracking (SRC) in the 7CrMoVTiB10.10 alloy. First, coarse‐grained heat‐affected zone (CGHAZ) specimens with different boron contents were prepared via simulated welding thermal cycles.
Dongdong Zhang +3 more
wiley +1 more source
[Solid placental transmogrification of the lung: A case report and literature review]. [PDF]
Beijing Da Xue Xue Bao Yi Xue Ban, 2023 Ha XM, Yao YZ, Sun LH, Xin CY, Xiong Y.
europepmc +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Laser powder bed fusion (LPBF) can fabricate high‐entropy alloys (HEAs) with refined microstructure and enhanced mechanical properties. However, the deformation and fatigue mechanisms of Al‐containing HEAs produced by LPBF remain unclear. In this work, we systematically investigate the tensile properties, deformation mechanisms, and high‐cycle
Dan Zheng +4 more
wiley +1 more source