Results 21 to 30 of about 194,218 (173)
ABSTRACT The heterostructured 1T‐MoS2‐based bimetallic sulfides are promising bifunctional electrocatalysts for alkaline overall water splitting. However, the controllable synthesis of these catalysts is hindered by the ready conversion of Mo species to 2H‐MoS2 and the tedious heterostructure engineering during sulfidation.
Zijian Zhao +8 more
wiley +1 more source
ABSTRACT Arranging functional units into a specific organization is a practical structural strategy for achieving fabulous performance, known as the functional unit and organization (FUO) paradigm. This paradigm offers a concise shortcut to establishing structure–performance relationships.
Zhongtao Lu +5 more
wiley +1 more source
ABSTRACT A thermomechanical strategy based on rolling‐annealing cyclic (RAC) was developed to regulate defect architecture and precipitation behavior in a (FeCoCrNi)94Al3Ti3 high‐entropy alloy. Intermediate annealing during rolling enables progressive grain refinement and introduces a high density of twins, stacking faults, and dislocations, forming a ...
Jiale Man +6 more
wiley +1 more source
在中国国家自然科学基金重大项目《支持产品创新的先进制造技术中的若干基础研究》子课题《面向敏捷制造的分布自治生产系统协调控制理论研究》资助下,以制造系统控制论为理论基础,就敏捷制造系统的控制理论与控制结构进行研究,对有关协调控制理论与应用研究成果进行学术总结。 针对敏捷制造企业的车间实时调度与调度优化,给出基于Agent的实时生产调度方法,将客户/项目按照元模型的定义封装成一个活动Agent,将动态生产环境信息、生产计划、过程链调度等集成在一起,实现敏捷化的生产过程跟踪、调度与控制 ...
朱云龙 +4 more
core +1 more source
针对中国西部干旱区生态环境特点,综合前期研究成果,介绍生态环境调控理论 框架,提出西部干旱区生态环境调控模式,即4大类9个模式.第一大类为水主式,包括配水 式、节水式;第二大类为保护式,包括保水式、保土式、保生式;第三大类为开发式,包括 专门开发式、综合开发式;第四大类为协调式,包括区域协调式、流域协调式.本文还对各 种模式进行描述和分析,并以塔里木河流域的部分区域为例来阐述调控模式的应用.为指导干旱区生态环境调控提供几种可借鉴的模式和范例.
左其亭, 周可法, 吴泽宁
doaj +2 more sources
光电修坯机在电气方面经过了几次改造,即从步进选线器控制改为光电程序控制、电阻调速改为可控硅调速等.控制方面将来还可以采用微处理机(如Z—80单板机).此文是在总结光电程序控制,电阻调速改为调压方式的基础上而写成的.
苟长安
doaj
ABSTRACT Regulating the d‐band center of semiconductors through elemental doping presents a promising strategy for enhancing the efficiency of photocatalytic nitrogen conversion. This review systematically summarizes recent advances in d‐band center engineering for photocatalytic nitrogen fixation.
Zixuan Li +10 more
wiley +1 more source
ABSTRACT The exceptional ductility of face‐centered cubic high/medium‐entropy alloys (H/MEAs) is counterbalanced by intrinsically restrained yield strength, fundamentally compromising their application in structural and functional materials. Here, a novel carbon (C)‐driven precipitation strategy is introduced to promote discontinuous precipitation (DP)
Hao Feng +10 more
wiley +1 more source
miR-17在体外脑缺血损伤中对Smad锚着蛋白的负性调控作用
目的探讨microRNA-17(miR-17)在体外脑缺血损伤中对Smad锚着蛋白(Smad anchor for receptor activation,SARA)的调控机制。方法使用大鼠高分化嗜铬细胞瘤PC12细胞,经连二亚硫酸钠(NaS2O4)构建氧糖剥夺模型(Oxygen Glucose Deprivation,OGD),计时0h、1.5h、3h、6h和12h,实时定量PCR检测miR-17的表达变化。利用miR-17mimic瞬时转染PC12细胞,western blot检测转染24h ...
石晓花 +7 more
doaj
在当前“双碳”目标的背景下,中国大力提倡能源转型,可再生能源发展迅速,其反调峰增大了系统的调峰压力。抽水蓄能电站作为重要调峰资源,是解决上述问题的有效手段之一,综合量化评估其在大规模风光并网下的效能,是对抽蓄电站的建设投资、运营设计和经济优化等工作提供科学决策的前提。为此,首先分析实际系统运行中抽蓄电站效能发挥的典型场景,并根据抽蓄电站的特性从不同维度建立了电站效能评价指标。然后采用模糊综合评价法构建了一套综合效能量化评估体系,运用改进层次分析法-CRITIC法的综合赋权法对各层指标赋权 ...
李军徽 +7 more
doaj +1 more source

