Results 31 to 40 of about 1,996,200 (172)
印染行业使用的染料多为化学合成染料,其中以偶氮发色团为基础的合成染料约占80%。作为具有代表性的偶氮活性染料之一,活性黑5(RB5)常用于棉花、其他纤维素纤维、羊毛和尼龙的染色。偶氮染料废水中含有大量难降解的有机物。除脱色外,对废水中的染料与中间产物进行降解矿化、降低毒性,也是偶氮染料废水的处理目标。针对RB5经微生物脱色后的产物难以生化降解的特点,对生物膜反应器出水毒性进行监测,结果表明RB5废水经微生物脱色后仍有残留毒性。采用钛基金属氧化物涂层为阳极材料的电化学装置对含RB5脱色产物的废水进行处理 ...
张鑫鑫, 宋海红, 郑钰民
doaj
ABSTRACT Titanium (Ti)–steel composite joints are prone to the formation of compounds such as TiC, TiFe, and TiFe2 during solid‐phase bonding. This phenomenon leads to premature failure and significantly reduces the bonding quality of the joints. However, the fracture behavior of the joint influenced by these compounds, particularly on the initiation ...
Sheng Zeng +5 more
wiley +1 more source
通过设置不同土壤pH、施氮量、季节和作物种植的土壤环境条件,采用盆栽埋袋试验方法研究麻纤维地膜的降解规律变化,并分析其与土壤微生物生物量及酶活性的关系。结果表明:麻纤维地膜的降解过程均服从Olson衰减模型(R2=0.689~0.996 ...
龙世方 +6 more
doaj
ABSTRACT Through grain boundary segregation engineering, a crack‐free high‐strength CoCrNi medium‐entropy alloy (MEA) can be successfully fabricated via laser powder bed fusion (PBF‐LB). The influence of micron‐sized TiC particles on microstructural evolution, grain boundary segregation behavior, and mechanical properties was systematically ...
Cunliang Pan +9 more
wiley +1 more source
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
ABSTRACT Low‐temperature lithium‐metal batteries (LT‐LMBs) are increasingly pursued for higher energy density and extended cycle life, yet suffer from severely depressed interfacial Li+ desolvation/diffusion kinetics due to the enlarged solvation structures as well as organic electrolyte solidification, ultimately inducing much higher barriers to ...
Shikai Yin +14 more
wiley +1 more source
利用河水衰减法研究阴离子表面活性剂(LAS)和非离子表面活性剂(NIS)在滇池水体中不同条件下的生物降解规律.结果表明:在滇池自然水体中,LAS和NIS均能生物降解,在试验时间(30d)内,L,AS的降解率达95%以上,NIS的降解率达92%以上,其降解动力学遵从二级动力模型.改变水温、表面活性剂初始浓度、pH值以及添加营养物质(葡萄糖或磷酸氢二钠)均对LAS和NIS的降解有一定的影响.水温对表面活性剂生物降解影响最大,当水温从20℃增至30℃时,LAS的降解速率从0.73-1增至2.10d-1 ...
王智, 吴幸强, 肖邦定, 涂新海
core
为了控制珠海天然气发电有限公司海水循环系统中的海生物,开发出环境友好的非氧化性海生物杀生剂TS-8511。评价了TS-8511对海生物的杀灭性能、急性毒性、生物蓄积性及生物降解性,并探讨了TS-8511的作用机理。结果表明,投加5 mg/L TS-8511并作用12 h,海生物的72 h死亡率可达到90%,投加10 mg/L以上,72 h死亡率达100%。TS-8511具有高效、低毒、生物蓄积性低、易生物降解的特点,对贝类、蛤类杀灭效果好,对鱼类影响小。
田林, 姚光源, 王向明, 李俊文
doaj
Read the free Plain Language Summary for this article on the Journal blog. Abstract Ecological communities are stressed by rapid and complex anthropogenic changes, threatening the persistence of biotic interactions and ecosystem functioning. Plant–pollinator communities, for instance, undergo structural transformations as a result of land‐use change ...
Erliang Gao +8 more
wiley +1 more source

