Results 41 to 50 of about 576,186 (194)

Atomically Thin Sn:GaN‐GaN Homojunction for High‐Sensitivity β‐Ray Detection

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Gallium nitride (GaN), a third‐generation wide‐bandgap semiconductor renowned for its superior radiation tolerance, holds promise for advanced β‐ray detection. Herein, a scalable liquid metal‐assisted in situ synthesis method is presented to fabricate Sn‐doped GaN homojunctions via gallium oxide printing followed by ammonolysis, enabling ...
Weiqing Liu   +8 more
wiley   +1 more source

多相光催化降解染料废水的研究进展

open access: yesGongye shui chuli, 2001
对光催化降解染料的机理,影响染料光催化降解速率的因素,提高染料光催化降解效率的途径以及光催化降解染料废水的研究进展进行了综述.
张音波, 余煜棉, 刘千钧
doaj  

海绵中石油降解微生物的分离筛选及降解特性研究

open access: yes, 2014
海绵中石油降解微生物的分离筛选及降解特性研
王海涛   +5 more
core  

Oxygen Doping and Crystal–Amorphous Multiphase Coupling Synergistically Improve the Wear Resistance of NiTiCu Alloy

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT NiTi shape memory alloys (SMAs) show excellent performance in vibration damping and corrosion resistance. However, due to low hardness and lack of self‐lubrication, they suffer severe friction and wear during service. Although various strategies including doping and heterostructure design have been proposed, the effects are unsatisfactory.
Huwen Ma   +13 more
wiley   +1 more source

光合细菌降解有机污染物的研究进展

open access: yesGongye shui chuli, 2003
利用微生物降解有机污染物是环境工程研究的热点之一。光合细菌(PSB)以其特有的生理特性和降解多种有机污染物的能力,日益受到了人们的重视。综述了光合细菌降解较复杂的有机污染物的种类、降解机理、有关的降解酶类和降解性质粒等方面的研究工作,为进一步扩大光合细菌实际应用展示了广阔的前景。
吕红, 周集体, 王竞
doaj  

膜富集-高强UV/SO32-体系高效降解PFOS的研究

open access: yesGongye shui chuli, 2020
工业废水中全氟辛烷磺酸(PFOS)浓度低,直接应用化学法降解能耗较高。采用膜分离与UV/SO32-光降解的组合工艺对其进行处理,研究了此组合技术的处理效果,并考察了影响降解率的因素。结果表明,反渗透膜可有效富集PFOS溶液,高强UV/SO32-体系可高效降解该富集溶液。提高溶液初始pH、SO32-浓度、紫外光强,均有利于PFOS降解率的提高,而PFOS初始浓度的提高会降低其降解率。
顾玉蓉   +5 more
doaj  

一株高浓度苯胺、苯酚降解菌的分离鉴定及降解特性

open access: yes, 2010
从某生活污水厂活性污泥中分离到一株能够以苯胺或苯酚为唯一碳源、能源生长的高效降解菌菌株ANP.经形态特征、生理生化及16S rDNA序列分析,将该菌株鉴定为Delftia sp.进一步研究表明,该菌株利用苯胺生长的最适温度和pH分别为30℃和6.0,最适降解浓度为2000mgL-1;利用苯酚生长的最适温度和pH分别为35℃和8.0,最适降解浓度为1500mgL-1.苯胺、苯酚混合培养时该菌株对苯酚的降解过程要滞后于对苯胺的降解过程,但经过42h均能彻底降解.研究了ANP降解苯胺和苯酚的开环途径 ...
谭周亮   +3 more
core  

Study on Multi‐Step Deformation Mechanisms and Synergistic Regulation of Strength and Ductility in Ti‐2Al‐2.5Zr Alloy Tubes for Nuclear Power Applications

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT To overcome the strength–ductility trade‐off in fabricated Ti‐2Al‐2.5Zr alloy tubes, we systematically investigated the microstructural evolution and mechanical behavior throughout thermomechanical processing, including hot working (forging and extrusion) and cold multi‐pass rolling.
Yanlong Xia   +7 more
wiley   +1 more source

含复合光降解剂的聚乙烯膜在汞灯辐照下的光降解行为

open access: yes四川大学学报. 自然科学版, 1999
过改变复合降解剂中各组分的含量来控制降解PE膜以汞灯为光源的光降解行为,以得到具有时控降解效应的降解薄膜.图1同一薄膜的羰基峰1713cm-1与内标峰1373cm-1吸光度随辐照时间的变化1实验部分1.1原料及试剂低密度聚乙烯树脂,牌号1I2A,兰州...
陶靖   +4 more
doaj  

淡水藻源异味化合物的光降解和光催化降解研究

open access: yes, 2007
为探讨利用太阳光降解水中异味化合物的可行性,对2-甲基异莰醇(MIB)、β-柠檬醛(β-Cyclocitral)和β-紫罗兰酮(β-Ionone)等3种异味化合物在紫外光和太阳光下的光降解及光催化降解效果进行了研究。结果表明,单波长紫外光——UVC(254 nm)和UVB(312 nm)及太阳光均能有效降解纯水中的β-Cyclocitral和β-Ionone,但不能降解MIB。加入纳米TiO2后,在UVC(254 nm)、
宋立荣, 李林, 陈伟, 张婷
core  

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