Results 11 to 20 of about 9,857 (139)

公路工程交通安全设施的施工质量研究

open access: yes智能城市应用, 2022
公路工程是国家发展的重要基础保障,在提高人们出行效率,促进不同区域间文化经济交流方面有着非常重要的作用与意义。交通安全设施则是保障人员与车辆安全,避免出现人身伤亡和重大交通安全事故的防护设施。近些年,在经济快速发展的推动下,公路工程建设规模不断扩大,交通安全设施也引起了人们广泛的重视与关注,特别是在山区,交通安全设施的作用更为显著。交通安全设施主要包括防护栏、路面标线、隔离设施等,在开展公路工程施工建设中,相关工作人员先要做好准备工作,明确交通安全设施建设目标,设计施工规划与内容 ...
凡德 孔
semanticscholar   +1 more source

高校公共体育健美操一流课程建设的实践与反思

open access: yes体能科学, 2023
随着高等教育的发展,高校体育课程的质量和效果受到了广泛关注。健美操作为一种集体性、艺术性和竞技性于一体的体育项目,其课程的建设在高校体育教育中占有重要地位。本篇文章以高校健美操一流课程建设的实践与反思为主题,通过对相关文献的梳理和实地调研,探讨了健美操一流课程建设的实践路径、存在的问题以及改进策略。本篇文章首先介绍了健美操一流课程建设的重要性和必要性,然后通过分析和总结近年来高校健美操一流课程建设的实践情况,揭示了其在课程内容、教学方法、评价体系等方面的创新与突破。在此基础上 ...
维 李
semanticscholar   +1 more source

关于地理国情监测质量检查流程和内容的探讨

open access: yes地矿测绘, 2019
地理国情监测是对我国国情实行准确了解的一种方式,其通过对现有地理条件及资源的探索,了解我国经济建设及发展的实际情况,并在此基础上为我国经济的发展提供可靠依据。地理国情监测是一项较为复杂且持久的工作,其监测结果对我国可持续发展有着重要意义。本文笔者主要对地理国情监测质量检查流程及内容进行探讨,以供参考。
璟 张
semanticscholar   +1 more source

漫谈软件质量保证

open access: yes工程技术与管理, 2020
随着软件产品的广泛应用,软件质量问题层出不穷,软件问题具有不可控和严重性,使软件质量从台后走到台前,逐渐被人们所重视。通常人们所熟知的软件质量控制手段——软件测试,其并不能很好地解决软件质量问题,软件质量保证正是在此基础上产生并逐步被人们所认识。软件质量保证(SQA)涉及软件开发流程的各个环节,它是为了弥补软件质量控制的不足而产生,它的工作对软件质量问题的提前预防和客观评价软件开发情况有重大作用。论文针对软件质量保证、软件质量保证工作及其从业人员要求、职责等相关内容进行简单介绍。
红达 刘
semanticscholar   +1 more source

Bi/Bi2O3 Nanoparticles In Situ Embedded in Carbon as Anode Materials for Fast and Long‐Lasting Sodium–Ion Storage

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Bismuth anode materials are considered promising anode candidates for sodium–ion batteries (SIBs) due to their high theoretical capacity and appropriate working potential. Nevertheless, the significant volume expansion that occurs during the cycling process restricts its broader application in sodium–ion storage. Herein, Bi/Bi2O3 nanoparticles
Jiaju Lu   +3 more
wiley   +1 more source

Oxygen Vacancy Engineering of Ultrafine ZnAl2O4 Nanoparticles as a Robust Protective Layer for Dendrite‐Free and Long‐Lifespan Aqueous Zn Metal Anodes

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Aqueous zinc‐ion batteries (AZIBs) hold great promise for safe and sustainable energy storage, but their commercialization is impeded by severe Zn dendrite growth and interfacial instability. To address these challenges, we propose a defect engineering strategy employing ultrafine ZnAl2O4 (ZAO) nanoparticles (∼5 nm) with oxygen vacancy defects
Yilun Ren   +9 more
wiley   +1 more source

Ionic‐Liquid‐Assisted Synthesis of NiTe/CoTe Heterostructure With Te Vacancies in N, P, and F Co‐Doped Hollow Carbon Nanorods for Efficient Alkaline Hydrogen Evolution and High‐Performance Flexible Supercapacitors

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Low conductivity, slow ion‐diffusion, and limited reactive sites are common problems in electrocatalysts and electrode materials. In this study, a complex NiTe–CoTe heterojunction with abundant Te vacancies embedded in N, P, and F co‐doped hollow carbon nanorods (NiTe1−x–CoTe1−x/NPFC) was fabricated via a simple ionic liquid‐assisted ...
Mingjie Yi   +7 more
wiley   +1 more source

Multiscale Study of a Synergistic System in Carbon‐Coated Multimetal‐Based Selenides Toward Rapid and Highly Stable Sodium Storage

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu   +5 more
wiley   +1 more source

Sodiumation of Biomass‐Derived Quinones Enables High‐Rate and Long‐Life Cathodes for Sodium‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Biomass‐derived quinones are promising green and sustainable cathode materials for sodium‐ion batteries (SIBs), yet their practical application is hindered by poor cycling stability due to dissolution in conventional electrolytes. Herein, we demonstrate that sodiumation is an effective strategy to enhance both rate capability and cycling ...
Xinyue Zhu   +4 more
wiley   +1 more source

Tunable Redox‐Active Anhydride‐Based Linear Polymer as Organic Cathodes for Chemically Self‐Charging Aqueous Zinc–Ion Batteries

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Chemically self‐charging aqueous zinc‐ion batteries (AZIBs) have emerged as promising candidates for energy storage technologies owing to their environmental autonomy and structural simplicity. Nonetheless, the self‐charging performance is significantly compromised by the limited potential difference between cathodes and oxygen, as well as the
Yan Wang   +5 more
wiley   +1 more source

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