Results 71 to 80 of about 576,186 (194)

Designing Additive‐Manufactured High‐Performance CoCrNi Matrix Composites Based on Grain Boundary Segregation

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
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

柠檬酸螯合Fe(Ⅲ)活化过硫酸盐降解活性艳红X-3B

open access: yesGongye shui chuli, 2018
文章研究了柠檬酸螯合Fe(Ⅲ)活化过硫酸盐体系对水中活性艳红X-3B的降解效果。考察了过硫酸盐浓度、Fe(Ⅲ)/柠檬酸(CA)、pH及阴离子(NO3-、NO2-、HCO3-、Cl-)对X-3B降解效果的影响,并研究体系中产生自由基的贡献率。结果表明,过硫酸盐浓度为0.2 mmol/L时,X-3B降解率最大;X-3B的降解率随Fe(Ⅲ)/CA增大而增大;pH的增大不利于X-3B的降解;无机阴离子的加入抑制X-3B的降解。·OH和SO4 ·-在光解过程中的贡献率分别为58%和31%。
张楠, 李建民, 汪应灵
doaj  

滇池水华蓝藻中藻毒素光降解的研究

open access: yes, 2001
微囊藻毒素是水华蓝藻释放的一类毒性很大的环状七肽物质.通过紫外灯和日光照射滇池水华蓝藻提取液,发现溶液中微囊藻毒素均可被降解,且在日光照射下降解更快.同时发现藻毒素的降解程度与色素含量有关.结果表明 ...
张维昊,方涛,徐小清
core  

Interfacial Reconstruction of Li+ Solvation Shell for Fast Diffusion Kinetics in Low‐Temperature Dendrite‐Free Li Metal Battery Enabled by Atomic Catalysts

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
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

一种降解石油烃的淡水藻类——坑形席藻

open access: yes, 1982
坑形席藻(Phormidium foveolarum Gom.)是长期培养于含石油烃基质的淡水蓝藻。测定了坑形席藻降解正十四烷时的耗氧量和降解后残留的烃浓度,以及对长期培养于石油烃基质的坑形席藻细胞进行了电镜观察。结果表明:(1)坑形席藻对石油烃具有吸附和降解能力,可以降低基质中的烃浓度;(2)在黑暗条件下,坑形席藻降解烃过程中的耗氧量,随反应时间的延长而递增;(3)长期以烃为基质生长的坑形席藻,发生着一定的细胞学变化 ...
邓星明, 詹发萃, 邓亚农
core  

Individual Uncertainty and Policy Compliance During the COVID‐19 Pandemic

open access: yesRisk, Hazards &Crisis in Public Policy, Volume 17, Issue 2, June 2026.
ABSTRACT Ample scholarship examines the extent to which public policies in representative democracies reflect the priorities and needs of the public, often finding that individuals are unaware of many policy issues and policy responses. This may be especially true when issues of risk and scientific uncertainty are involved, which can be difficult for ...
Nathan Jeschke   +6 more
wiley   +1 more source

Sudėtinių grafemų <é>, <è>, <ê>, <ë>, <ē>vartosena Simono Daukanto "Žodrodyje"

open access: yes, 2014
The analysis of graphics from Simonas Daukantas’ "Žodrodys" (1838) as well as Lithuanian headlines from "Epitome Historiae Sacrae" and respective rules from Daukantas’ textbooks "Prasmą łotinû kałbos" (1837) and "Abecieła lîjtuwiû-kalnienû ir źiamajtiû kałbos" (1842) is based on the descriptive method and comparison with the theory.
openaire   +1 more source

混合菌降解氯苯酚类化合物

open access: yesGongye shui chuli, 2003
从驯化污泥中分离出一组能够降解氯苯酚类化合物的优势混合菌,在60h内能够将150mg/L的对氯苯酚完全降解。最适降解条件:pH为6.0,温度为35℃,摇床转速240r/min。通过对降解过程的动力学分析,得出对氯苯酚的降解过程在不同的浓度范围内表现为零级反应关系。
安淼, 周琪, 李晖
doaj  

微生物降解多环芳烃的研究进展

open access: yes, 2005
多环芳烃是一类长久存在于环境中,具有毒性、致突变与致癌等特性的环境优先污染物。本文对降解多环芳烃的微生物类群进行了阐述,介绍了在土壤与厌氧条件下细菌降解多环芳烃的研究情况,最后介绍了降解多环芳烃的相关酶类以及分子生物学的研究 ...
廖银章, 温洪宇, 李旭东
core  

Anthropogenic nitrogen addition interrupts seasonal connectivity and structures of plant–pollinator networks

open access: yesFunctional Ecology, Volume 40, Issue 6, Page 1878-1891, June 2026.
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

Home - About - Disclaimer - Privacy