Results 51 to 60 of about 5,325 (166)

3D‐Printed Porous High‐Entropy Alloy Boosts Peroxymonosulfate Activation for Long‐Term Organic Pollutant Degradation

open access: yesRare Metals, EarlyView.
ABSTRACT High‐entropy alloys (HEAs) have attracted considerable interest from researchers owing to their tunable chemical compositions, exceptional structural stability, and promising catalytic properties. However, their large‐scale application is often hindered by complex manufacturing techniques and poor durability.
Sheng Guo   +9 more
wiley   +1 more source

A Research on the Improvement of Modification Operation Mode of M Nuclear Power Group [PDF]

open access: yes, 2016
随着核电商运机组的逐渐增加,如何保障核电站安全、稳定、高效运行的问题日益得到各方关注与研究,而工程改造作为保障核电站安全、稳定、高效运行的重要手段,日益凸显其重要性。目前,该领域面临着整体业务运作效率低下、质量进度不可控、运作成本高等实际情况,导致较难满足现场需求,对机组安全稳定运行带来间接影响。本文通过鱼骨图对整体业务运作模式中存在的问题进行梳理与分析,得出了当前该业务运作模式中存在的群厂管理薄弱,环节、流程复杂,接口过多,供应商相对垄断等主要问题,旨在通过对业务中的流程、供应商、信息化等的改善和运用,
吴凌霄
core  

Bimetallic Mo/Fe‐Doped CoP2 Nanoleaf Array as a Bifunctional Electrocatalyst for Overall Water Splitting

open access: yesRare Metals, EarlyView.
ABSTRACT The development of efficient and stable bifunctional catalysts remains a key challenge for green hydrogen production via electrochemical water splitting. In this study, a bimetallic Mo/Fe‐doped CoP2 nanoleaf array anchored on carbon cloth (Mo, Fe‐CoP2@CC) was synthesized from zeolitic imidazolate framework‐L (ZIF‐L) via an ion‐exchange and low‐
Xiangqun Zeng   +6 more
wiley   +1 more source

基于OSPF的ASON路由的一种加密方案

open access: yesGuangtongxin yanjiu, 2007
自动交换光网络(ASON)控制协议采用通用多协议标签交换(GMPLS)控制协议族,其路由部分主要为开放式最短路径优先(OSPF)协议。文章分析了OSPF协议加密措施存在的安全隐患,并对现有的加密方案进行了改进。针对OSPF协议的安全模式,提出了一种可以应用于ASON中路由技术的新的安全性方案。基于数论算法,实现S盒动态调整,通过动态产生的子密钥,在迭代过程中对分组进行加密。
李彬   +5 more
doaj  

Design and Implementation of Campus Information Management System for Primary and Secondary Schools in Guangxi [PDF]

open access: yes, 2016
学校建筑物安全受到越来越多的关注,它直接影响到广大师生的生命安全,它关系 到全国民众的切身利益以及社会的和谐与稳定。建立广西中小学校舍信息管理系统,为 校舍安全工程的规划实施提供科学依据,有利于全面掌握广西中小学校舍安全信息,有 利于提升教育的科学管理水平,有利于促进教育事业科学发展。 本文以全区中小学校舍信息管理系统为例,根据广西各地区地质地貌特征、学校分 布情况及校舍鉴定情况,设计和建立一个在B/S模式架构下的信息管理系统。论文的 主要研究内容包括: 1、详细地论述了系统开发背景 ...
黄欣波
core  

Contrasting light demands determine the coordination of plants' non‐structural carbohydrates and economic strategy over the range of solar spectral composition

open access: yesFunctional Ecology, Volume 40, Issue 2, Page 534-552, February 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Non‐structural carbohydrates (NSC) are critical mediators of plant adaptation to fluctuating light environments. They are tightly coordinated with plant economic strategy, that is, leaf economics spectrum (LES) and root economics spectrum (RES).
Lulu Xie   +6 more
wiley   +1 more source

报纸广告知识产权保护的意义及途径 [PDF]

open access: yes, 2011
创意经济时代对报纸广告的知识产权保护势在必行。本文提出从法律制度、行业协会和协调发展等层面,有针对性地分析问题和解决问题 ...
王静, 陈培爱
core  

Breaking Hardness–Toughness Trade‐Off in Novel (V, Nb)C Carbides via Nanoscale Phase Separation and Local‐Chemical‐Order Dislocation Network

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Transition metal carbides demonstrate exceptional mechanical properties but confront a critical hardness–toughness trade‐off. Spinodal decomposition‐mediated phase separation is an effective approach to enhance mechanical properties in carbide ceramics through high‐temperature treatment.
Zhi‐Xuan Zhang   +6 more
wiley   +1 more source

油井自动加药系统的设计开发

open access: yesShiyou jixie, 2015
针对油井人工加药存在对加药量无法准确控制、劳动强度大、小产量油井成本相对偏高及无法实现多点协调监控的问题,设计开发了油井自动加药系统。该系统采用西门子S7-200的PLC控制模块,根据加药流量的反馈值来控制阀门开合度,自动进行PID调节,控制加药量,达到自动控制目的;自动加药系统运行后,可在SCADA系统中对其各项参数进行实时监视和控制,了解设备的运行状况及数据变化情况,在上位机中实现对工作现场的数据采集、设备控制、参数调节以及信号报警;由PLC模块组成的下位机与上位机进行通信 ...
徐学武, 吴文秀, 刘, 琛
doaj  

Research on Supply Chain Optimization of Xiamen Cruise Homeport [PDF]

open access: yes, 2016
作为国内试点的四个邮轮母港城市之一,厦门已经具备了邮轮旅游产业发展的经济基础,同时也已具备发展成邮轮母港的基础。但国内邮轮市场尚处于消费培育阶段,市场的不饱和也加剧邮轮港口之间的角逐。现代港口的竞争是以港口为核心的服务型供应链的竞争,要避免与其他港口陷入同质化的竞争局面,站稳一席之地,厦门邮轮母港亟需加快港口供应链的构建,打造核心竞争力。 本文立足供应链管理相关理论,从港口企业运作的角度出发,剖析目前厦门邮轮母港运营过程中存在的问题,围绕邮轮母港供应链优化提出建议 ...
李梅君
core  

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