Results 11 to 20 of about 20,854 (167)
Rare Metals, EarlyView.ABSTRACT Ni3S2 has emerged as a promising catalyst for the electrochemical oxidation of biomass‐derived 5‐hydroxymethylfurfural (HMF) to 2,5‐furandicarboxylic acid (FDCA), driven by its distinctive physicochemical properties. However, its practical catalytic efficiency is severely hindered by abundant electrochemically inactive surface sites and poor ...
Cheng‐Feng Yi +5 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT Internal oxidation has been identified as an effective method for enhancing the strength of AgMg alloys. However, the concurrent occurrence of embrittlement remains inadequately understood, thus limiting their broader application. This study investigates the oxidation behavior of AgMg alloys with Mg concentrations ranging from 1 at% to 7 at ...
Hai‐Cheng Zhu +12 more
wiley +1 more source
New Advances of Degradable Magnesium‐Based Metal Biomaterials in the Field of Orthopedics
Rare Metals, EarlyView.ABSTRACT Based on their outstanding biomechanical properties and superior osteogenic activity, magnesium (Mg) and its alloys have been extensively investigated for their biocompatibility and therapeutic efficacy in treating fractures and bone defects.
Jia‐Nan Yu +8 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT The detection of volatile organic compounds (VOCs) holds significant implications in environmental monitoring and disease diagnosis. Traditional gas detection technologies are constrained by complex operation and high cost, thereby failing to satisfy real‐time detection demands.
Yuening Wang +11 more
wiley +1 more source
Research and Design of Data Warehouse Model in Bank Based on Teradata [PDF]
, 2015 企业数据仓库的建立对于企业管理具有重要的意义。不同企业须根据其自身特点和现实环境来选择建设数据仓库的路线和方法。 企业级数据仓库发展至今，已经进入一个全面发展阶段。以银行业的企业级数据仓库为例，一个成熟的企业级数据仓库需要具备至少海量数据存储能力(PB级)、数据模型能力(数据按业务主题进行归类如：客户、帐户、会计、交易明细）、大数据量分区能力、大批量处理的计算能力、数据质量的控制能力、高并发处理能力、报表数据存储能力和非结构化数据管理能力等特点。 本文着眼于数据仓库数据模型的研究 ...
杜骞
core
Rare Metals, EarlyView.ABSTRACT Regulating negative parameters of metacomposites is mainly limited by their unclear mechanisms, which affects their practical applications in new sensing, communication, electromagnetic (EM) protection and other fields. This work proposes a dual‐functional competitive design strategy based on the waste corncob‐derived carbon/polyaniline ...
Qiuyun Yang +4 more
wiley +1 more source
The redesign research of neighborhoods space in contemporary urban community [PDF]
, 2016 居住社区是构成城市生活的最关键要素，是与我们每个人的日常活动紧密相连的重要场所，它影响着我们的生活方式与习惯。在当代中国城市发展的大环境下，中国居住社区的开发建设形成了特定的小区模式，空间活力逐渐丧失，在邻里空间中产生出各种的问题和矛盾。 本文从这样的现象入手，展开了对社区邻里空间的再设计研究。该研究主要包括三个部分。首先，本文分析了中国当代城市居住社区邻里空间的三个主要模式：“大街区”、“大院式”以及“建筑点状分布”，并追根溯源分别探寻了这些特征的形成原因以及演变过程。其次 ...
唐倩
core
Rare Metals, EarlyView.ABSTRACT Harnessing solar energy for self‐heating presents an effective strategy to suppress surface ice formation. In this paper, we fabricated nano‐silver‐modified multilayer graphene sheets (Ag@MGs) that integrate photothermal and superhydrophobic properties for anti‐icing applications.
Yihan Zhang +7 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2002 本文提出了实际工程结构的非线性理论设计和分析方法(NIDA),并以澳门回归纪念馆的设计为例,展示了本方法的优越性。在设计过程中,设计者无需假设K系数和有效长度,在结构分析完成后便可迅速完成设计,因此本文提出的方法既经济又便利。尽管对于钢框架在往复荷载及动力荷载作用下的弹塑性大位移分析已经非常成熟,但本文的方法开创了结构的非线性分析及设计的新纪元 ...
陈绍礼
doaj
Integrated design of fault diagnosis and active fault-tolerant control for submarine control systems [PDF]
, 2015 潜艇是展示国家军事实力的一个重要法宝，在现代和未来的海战中有着举足轻重的作用。软件漏洞问题、线路意外故障、人为恶意损毁、器件容易老化、操作有误以及外界不可避免的灾害等原因都会导致潜艇控制系统发生故障。因此在考虑控制器的设计时必需将执行器故障因素考虑进去这样得到的控制器才能有效应对潜艇不可预知的故障情况。本文以潜艇垂直面运动模型作为研究的控制系统，提出了两种集成故障诊断与容错控制设计方案。其中，故障诊断技术中采用结合观测器与自适应参数跟踪的基于模型的故障诊断方法 ...
王菲
core