Results 11 to 20 of about 12,951 (170)
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT By adding CuO, the worm‐like amorphous phase and atomic clusters were simultaneously introduced, enabling the (Ni40Ti40Cu20)99.9O0.1 alloy micron columns to exhibit a uniform flow strain of over 40% and a strength of over 2.5 GPa during compression.
Huwen Ma +13 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT To address the issues of aluminum (Al) powder agglomeration during combustion and low oxidizer decomposition efficiency in composite solid propellants, this study utilized in situ self‐assembly technology to prepare cobalt‐based hybrid‐coated modified Al powder (Al@CZ).
Chong Chen +11 more
wiley +1 more source
The Functions and Mechanisms of Histone Demethylase JMJD1A in Urinary Bladder Cancer Development [PDF]
, 2015 JMJD1A（JumonjiCdomain-containing1A），又名JHDM2A，KDM3A，是一种组蛋白去甲基化酶，可以特异性去除H3K9位点的一甲基化和二甲基化，在组蛋白甲基化修饰中起到重要作用。JMJD1A表达受到低氧诱导因子HIF-1α（hypoxia-induciblefactor1α）的调节，并且参与到肿瘤细胞对低氧环境的适应性调节过程中。 膀胱癌是世界范围内高发和高致死率的恶性肿瘤之一。已有报道JMJD1A在膀胱癌肿瘤组织中高表达，但是JMJD1A在膀胱癌的发生发展机制尚不清楚 ...
秦丽萍
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT This study presents an assessment of four representative expansive additives—calcium sulphoaluminate–calcium oxide, magnesium oxide, sodium lauryl sulfate, and sodium abietate—and their effects on the expansion behavior, mechanical development, and microstructural characteristics of cemented paste backfill (CPB).
Lijie Guo +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT High‐entropy alloys (HEAs) have attracted considerable interest from researchers owing to their tunable chemical compositions, exceptional structural stability, and promising catalytic properties. However, their large‐scale application is often hindered by complex manufacturing techniques and poor durability.
Sheng Guo +9 more
wiley +1 more source
Physiological Responses of Carbon and N2 fixation of Trichodesmium IMS101 to Environmental Changes [PDF]
, 2015 CO2和光是影响海洋浮游植物最重要的环境因子，未来海洋将面临这两方面的变化：一方面，大气CO2的升高使得全球变暖的同时导致海洋酸化（海水pH下降），并引起海洋低氧化。另一方面，海洋升温导致的上部混合层变浅，使得浮游植物在该层内接受可见光与UV辐射量增加。这些海洋环境的变化会对浮游植物、初级生产力及关键生态过程产生深远的影响。目前，多数研究聚焦于硅藻和钙化藻类对这些环境变化的响应，而有关固氮蓝藻的报道很少。束毛藻可贡献高达一半的全球海洋生物固氮量，直接影响寡营养海域的初级生产力及其它生态过程。为此 ...
蔡晓霓
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The development of highly efficient and stable nonprecious metal electrocatalysts for the acidic oxygen evolution reaction (OER) is crucial to advance proton exchange membrane (PEM) water electrolysis. In this work, a dual synergistic strategy was proposed by constructing a Ce‐modified MnO2/MnO heterostructure.
Chuanbin Li +7 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2009 目的研究亚低温状态下,大鼠急性脑缺血时氧自由基—超氧化物歧化酶（SOD）和一氧化氮（NO）、一氧化氮合酶（NOS）的改变,探讨亚低温对缺血脑组织的保护机制。方法将45只Wistar大鼠随机分为9组,假手术组5只,缺血组及亚低温组又根据缺血、亚低温时间不同分为:3 h2、4 h4、8 h7、2 h亚组（各组均为5只）。采用颈内动脉线栓法制备大鼠大脑中动脉闭塞（MCAO）模型。结果比较缺血组和亚低温组,可见亚低温组栓塞侧脑组织超氧化物歧化酶（SOD）的生成和释放明显增加;亚低温组血清中一氧化氮（NO ...
林淑香 +3 more
doaj
Study on phytoplankton community similarity and ecological connectivity in northern Beibu Gulf [PDF]
, 2015 浮游植物是海洋生态系统中主要的初级生产者，是构成海洋生态系统食物网的基础环节，其种类变化和群落结构直接影响海洋生态系统的结构和功能，在海洋生态系统的物质循环和能量流动过程中起着重要作用。本文以2006~2007年于北部湾进行的四个航次的调查数据，分析了北部湾北部浮游植物的种类组成、数量变化、群落结构以及生物多样性，探讨了浮游植物的群落演替和群落相似性及生态连通性的调控机制，获得主要结果如下： （1）北部湾北部浮游植物四季共鉴定273种（含变种和变型），隶属于5门78属，种类组成以广温类和暖水类为主 ...
王符菁
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Linking biochemical properties of particles to particle-attached and free-living bacterial community structure along the particle density gradient from freshwater to open ocean [PDF]
, 2016 海洋颗粒有机质(particulateorganicmatter，POM)作为初级生产力的承担者，是链接生物泵和微型生物碳泵的重要桥梁，在海洋物质和能量循环中扮演重要角色。海洋颗粒附着(particle-attached，PA)细菌能够寄居在颗粒物上，通过细菌水解酶作用将POM转化成溶解有机质(dissolvedorganicmatter，DOM)，在颗粒物周围形成羽流。POM在去除过程中直接为PA细菌提供底物，影响PA细菌群落组成，而颗粒物释放的小分子化合物则影响周围的浮游(free-living ...
肖伟
core +1 more source