Results 31 to 40 of about 5,325 (166)
Rare Metals, EarlyView.ABSTRACT Organic‐inorganic hybrid perovskites (OIHPs) with white‐light emission have significant potential in solid‐state lighting and display due to the designable structure and excellent luminescent properties. However, OIHPs are prone to damage during bending due to the brittleness of crystals, which limits their application in the field of flexible
Jinyu Xu +8 more
wiley +1 more source
Study of P-TEFb reconstitution [PDF]
, 2016 P-TEFb在基因转录调控中具有重要地位。因此围绕P-TEFb的研究是基因转录调控研究中的重点问题。为了适应转录本身的复杂性，P-TEFb的活性调控以及其募集的方式也非常精致复杂。本文详细揭示了具有调控转录活性的，活化态P-TEFb的形成过程，即P-TEFb的重活化。 之前我们发现激酶活性受到限制的P-TEFb存在于核浆中的7SKsnRNP复合物中。在细胞受到外界刺激（如HMBA）时可以从7SKsnRNP中解离而最终产生活化态的P-TEFb。这个过程伴随着CDK9-T186位的去磷酸化 ...
李游
core
Advances in Elemene Nanodelivery Systems: From Material Design to Disease Treatment
Rare Metals, EarlyView.ABSTRACT Elemene (ELE) is a bioactive sesquiterpenoid extracted from traditional Chinese herbs, demonstrating broad‐spectrum antitumor, anti‐inflammatory, and analgesic properties with significant therapeutic potential. However, its clinical utility is constrained by inherent physicochemical limitations, including volatility and hydrophobicity, which ...
Xiao Wang +9 more
wiley +1 more source
Gaoya dianqi, 2019 异步联网方式下,送端电网的频率稳定问题需要重点关注。在直流系统发生闭锁性故障后,采用直流频率限制器（frequency limit controller FLC）进行故障调频能够抑制送端电网出现的高频问题。文中介绍了直流频率限制器的结构原理以及参数整定方法,并针对直流频率限制器退出时可能发生的"二次动作"现象提出延时及比例参数切换的方法进行优化。最后针对多回直流频率限制器间的协调问题,提出基于直流频率限制器作用系数的控制策略。结果表明 ...
李玲芳 +5 more
doaj
Application of project management in the development project of automatic relay production line [PDF]
, 2015 随着世界经济的高速发展，国际高科技水平也日新月异，面对激烈的国际市场竞争，国内企业生存压力日益凸显。劳动密集型的继电器生产企业为了提高生产效率和产品质量，须加快技术改造步伐，努力提高自动化率。目前国内继电器自动生产线开发进度，从方案设计到正式量产的建设期一般为一年半左右，国际先进水平可以压缩到一年内完成，其中设计、装配和调试的技术水平占有一定因素，但影响进度的最主要原因还是项目的综合管理水平。 目前国内同行在这方面的项目管理方法一般还局限在采用计划表做进度管理，以及采用企业原有的传统沟通模式，如开会 ...
林志阳
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Review of Research on the Digitalization of Power Generation System [PDF]
With the development and evolution of the information revolution, promoting the integration of a new generation of digital technology with traditional power generation system, and promoting the digital construction of power generation systems is an ...
CHANG Xiqiang +3 more
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Operation Control and Simulation of Supercritical Reheat Back Pressure Turbine [PDF]
, 2023 [Introduction] In order to meet the needs of the rapid development of China's industry for high parameters and high-quality heat load, make full use of the advantages of the high efficiency of supercritical large-capacity units and the high thermal ...
Honglei YUAN +3 more
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Rare Metals, EarlyView.ABSTRACT The sluggish kinetics of the oxygen reduction reaction (ORR) necessitate developing oxygen electrodes with enhanced electrocatalytic activity for practical zinc–air battery applications. In this study, an iron‐doped copper sulfide electrocatalyst (CuFeNS‐PNC) anchored on metal–organic framework‐derived carbon substrates was designed, featuring
Taichong Chitboonyakasem +4 more
wiley +1 more source
Guangtongxin yanjiu, 2019 设计无人机自组网（UANET）媒体接入控制（MAC）协议时,需要考虑其控制开销和数据传输时延,结合现有无线自组网时分多址接入（TDMA）协议和UANET特点,提出一种高效低时延的UANET多跳TDMA协议。采用基于拓扑信息的时隙分配信息高效广播机制降低网络控制开销,同时采用一跳节点二次分配数据时隙以及多维度调度节点时隙分配顺序机制,降低网络平均时延,提高数据传输成功率。仿真结果表明,该协议在无人机节点移动速度较快、拓扑变化频繁时,在消息平均时延、成功率和控制开销等方面的性能优于现有无人机MAC协议。
周逊 +4 more
doaj
Regional coordination control for optimization of urban traffic [PDF]
, 2013 针对目前我国城市交通区域控制的研究现状,应用群决策理论和模糊控制理论,对整个城市区域交通建立协调二级模糊控制模型。以相邻交叉口之间的车流量信息和预测剩余时间周期为模糊控制器输入,由二级模糊控制器的输出控制下一时刻的绿灯相位,从而调整控制子区内相邻交叉口上下游之间的交通流和集散程度,最终实现对控制子区的宏观区域协调控制.In view of the present research status of urban traffic zone control in our country, by using ...
朱强化 +3 more
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