Results 21 to 30 of about 138,296 (217)

高压XLPE电缆缓冲层状态模糊综合评估方法

open access: yesGaoya dianqi, 2022
针对高压XLPE电缆缓冲层烧蚀故障频发,缓冲层烧蚀影响因素较多,难以准确评估在运电缆缓冲层状态的情况,提出了一种缓冲层状态模糊综合评估方法。根据缓冲层烧蚀故障机理及带材特性,建立状态评估因子及评估分级标准。在此基础上,采用改进层次分析方法确定评估因子的权重。采用模糊综合评价方法,计算缓冲层状态评估等级隶属度向量。根据最大隶属度原则确定最终评估结果。通过实例计算表明,该评估方法能够对缓冲层状态进行准确评估,有效降低人的主观因素影响,为制定在运高压XLPE电缆缓冲层状态运维管控措施提供了科学依据。
周韫捷   +6 more
doaj  

Current Status of Safety Assessment of New Substances for Food Contact Materials in China and Abroad(国内外食品接触材料新物质安全性评估现状) [PDF]

open access: yesShipin kexue jishu xuebao, 2015
Food contact material is an important part in ensuring the safety of food.“Authority system” is currently established in the European Union, United States, and China, and namely only substances included in the positive lists are authorised to be use.And ...
FAN Meijuan(樊美娟)   +2 more
doaj   +1 more source

企业赞助项目的选择与评估 [PDF]

open access: yes, 2002
本文分析了赞助活动需要选择与评估的必要性 ,探讨了赞助商如何从赞助的目标对象与目标效果中选择赞助项目 ...
林升栋(企业赞助项目的选择与评估)   +1 more
core  

Radiographic identification and description of the equine middle conchal sinus (ethmoidal sinus): Implications for diagnosing middle conchal sinusitis

open access: yesEquine Veterinary Journal, EarlyView.
Abstract Background The middle conchal sinus (MCS) (ethmoidal sinus) remains one of the least understood equine paranasal compartments. Despite recognition of its involvement in sinonasal disease, disorders of the MCS often remain underdiagnosed in the absence of computed tomographic (CT) imaging due to limited anatomical understanding and challenges ...
J.‐B. Pavard   +3 more
wiley   +1 more source

我国辐照食品检验体系的完善与检测技术对比分析

open access: yesFushe yanjiu yu fushe gongyi xuebao
本文研究了我国辐照食品标准体系及检测指导规范,通过分析现行辐照食品标准、检验方法及相关研究动态,结合多种检测方法的原理与优缺点,对我国允许辐照的八大类食品,提出了基于食品基质特性的检测指导规范。针对我国辐照食品标准体系存在与国际衔接不足、新兴食品品类缺乏规范等问题,本文提出了完善我国辐照食品标准的合理化建议,包括补充缺失的检测标准、优化检测流程、更新仪器设备参数等。以期通过科学合理的检测方法选择与应用,有效提升辐照食品鉴定的准确性和效率,为规范辐照食品市场、保护消费者知情权提供有力支撑。
郭 淼   +8 more
doaj   +1 more source

图书馆数字资源后评估初探 [PDF]

open access: yes, 2005
本文分析了图书馆数字资源后评估的重要性,探讨了进行图书馆数字资源资源后评估的内容、方法 ...
马建霞
core  

A Comprehensive Reassessment of the Global Illegal Wildlife Trade's Economic Value 全球非法野生动植物贸易经济价值的全面重新评估

open access: yesIntegrative Conservation, EarlyView.
Through systematic price collection and correction for underreporting and undetected seizures, the global illegal wildlife trade (IWT) is estimated at US$28.4–39.5 billion per year. This finding highlights that previous valuations were underestimates.
Jia Hao Tow, L. Roman Carrasco
wiley   +1 more source

关于英语 “评估”的辨析 [PDF]

open access: yes, 2000
英语中有若干个具有“评估”意的词,一不小心就很容易误用。本文正是考虑到这种情况,特地对这些词进行深入的辨析。在文中,集中介绍各词的词源、词根,并加以比较,力图分析其本源的差异;并引入了各词的衍生词,对它们加以辨析,侧重于各词在实际使用中的差异;最后,笔者认为 Value和 Appraise更能反映“评估 ...
许志瑜, 纪益成
core  

Constructing Synthesizable Evaluations of Technical Interventions to Reduce Wildlife‐Caused Agricultural Losses 构建易用于证据整合的野生动物致农业损失缓解措施成效评估

open access: yesIntegrative Conservation, EarlyView.
A framework with eight key components to assess the effectiveness of technical measures to reduce wildlife‐caused agriculture loss. ABSTRACT Technical interventions to reduce wildlife‐caused agricultural losses (e.g., crops, livestock, and fisheries) are essential for human‐wildlife coexistence.
Cheng Huang   +8 more
wiley   +1 more source

Changes of Potential Suitable Areas for Lynx Under Climate Change in Mohe Area, Daxing'anling Mountains, China 气候变化下中国大兴安岭漠河地区猞猁潜在适宜区的变化

open access: yesWildlife Letters, EarlyView.
Climate change drives shifts in suitable habitats for Eurasian lynx and its prey (hare, roe deer) in Mohe, Daxing'anling Mountains. Under RCP scenarios, moderate warming (RCP4.5) promotes substantial habitat expansion, while high‐emission conditions (RCP8.5) lead to strong expansion in the 2050s but slower gains and partial contraction by the 2070s ...
Binglian Liu   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy