Results 31 to 40 of about 170,932 (161)

Chinese Verb Frames in Primary Education: From Basic Communication to Cognitive Complexity

open access: yesInternational Journal of Applied Linguistics, Volume 35, Issue 4, Page 2301-2316, November 2025.
ABSTRACT This article investigates text complexity in Chinese‐language textbooks for primary school students (Grades 1 to 6) in Hong Kong. Our analysis, based on verb frames in Mandarin VerbNet, shows a developmental shift in the linguistic input in first language (L1) education: Students begin with a focus on core frame elements in lower grades and ...
Tianyuan Cai   +2 more
wiley   +1 more source

機械操作危害改善之研究

open access: yes, 2015
[[abstract]]產業的生產活動,必然藉由使用各種生產機械或設備,利用其動力來加工所需要的產品。機械動力可以幫助產品的加工;但是相對地也有可能危害到操作者的安全。 任何機械設備,只要有動力能量的存在,就會有潛在的危害,一般機械性危害型式包括擠壓危險、剪斷危險、切斷危險、絞入危險、陷入危險、衝擊危險、刺傷危險、磨擦危險、高壓液體噴射危險等。 近年來,在機械操作上發生了很多工安意外,導致許多工廠被迫停工,因此,根據本研究做出有關車床、沖床操作危害之改善,更能在維修作業流程中得到最好的效率 ...
莊淯丞;王雨安;詹岳樺;張晉維
core  

消毒供应室护理人员职业危害因素及对策

open access: yesHuli yanjiu, 2008
摘要: (免费在线浏览)消毒供应室是医院的消毒供应中心,是医院的“心脏”,在控制医院感染中发挥着不可忽视的重要作用。由于工作性质和工作场所的特殊性,工作中存在着许多危害护理人员健康的有害因素,对这些有害因素采取必要的防护措施,既可以避免护理人员自身遭受危害因素的侵袭 ...
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doaj  

Managing Risk, Reinforcing Environmental Racism: The Biopolitics of Pesticide Regulation in California Agriculture

open access: yesReview of Policy Research, Volume 42, Issue 6, Page 1509-1524, November 2025.
ABSTRACT This paper provides a retrospective on California's oversight of 1,3‐dichloropropene (1,3‐D). It utilizes archival documents, including internal memos, emails, and risk assessments, to demonstrate how the state's Department of Pesticide Regulation consistently expanded allowable 1,3‐D use while presenting each policy change as scientifically ...
Kaitlyn Alvarez Noli
wiley   +1 more source

危害莼菜的几种摇蚊幼虫

open access: yes, 1989
莼菜为长江中下游地区民众喜爱的菜肴,具有较高的营养价值。本文重点叙述主要危害莼菜的三带环足摇蚊Cricotopus trifasciatur(Panzer)幼虫,记述了这种幼虫的特征和生长环境以及这类幼虫危害莼菜的过程和结果。同时亦简要介绍了另外两种对莼菜危害较轻的摇蚊幼虫,描述了它们的形态和分布 ...
王士达, 叶奕佐
core  

长江上游滑坡危险度区划

open access: yesShuitu Baochi Xuebao, 1994
采用数学统计方法,将长江上游约100万km^2地区划分为95个样本区。按照危险度高,中、低三个等级,区划出高危险度区约25万km^2;中危险度区约32万km^2;低危险度区约38万km^2。并对三种危险度区域内的滑坡危害作了概述。
乔建平 张小刚
doaj   +2 more sources

Content Moderation and Community Standards: The Disconnect Between Policy and User Experiences Reporting Harmful and Offensive Content on Social Media

open access: yesPolicy &Internet, Volume 17, Issue 3, September 2025.
ABSTRACT Moderating harmful and offensive content on social media is challenging for digital platforms that seek to balance regulation and censorship across a diverse user group. It is further complicated by discrepancies between platform policies, user expectations and user experiences.
Asher Flynn   +4 more
wiley   +1 more source

兰新铁路乌阿段风沙危害防治

open access: yes, 2002
该成果依据不同区段的危害特点分别选择了半隐蔽式行列沙障、羽毛排栅栏、半隐蔽式方格以及尼龙网防沙栅栏等多种形式进行了对比试验,取得了良好的防治效果,有效地制止了沙害。在机械沙障内,人工栽植旱生灌木和多年生草本,并采用了无灌溉造林方法,采用了阻、固、清并举,机械防沙与生物防沙结合,先机械措施后生物固沙,危害区与水源区并重的综合治理的思路和方法。经治理后,1998-1999年全线未发生一次停车事故,道轨基本无积沙现象,行车速度由原来每小时35公里提高到70公里 ...
周兴佳   +7 more
core  

大庆地区不同土地利用类型土壤重金属分析及生态危害评价

open access: yesShuitu Baochi Xuebao, 2011
运用对照分析方法,以大庆市七五土壤重金属含量、黑龙江省土壤背景值和国家土壤环境质量标准为对照,对比分析大庆地区不同土地利用类型(工业用地,未利用地,草地,旱田和水田)土壤10种重金属(As、Cd、Cr、Cu、Hg、Ni、Pb、Zn、V、Mn)含量变化规律,并进行了生态危害评价。结果显示:As、Zn、Hg、Pb含量最高的是工业用地,Cd、Cr、Cu、Ni、Mn、V含量最高的是旱田,其次草地,水田和未利用地土壤重金属含量较低;对比七五大庆市土壤重金属含量发现,除V外,其余含量都有所增加,以Hg、As ...
赵淑苹, 陈立新
doaj  

Child Rights Impact Assessment: A Policy Tool for a Rights‐Respecting Digital Environment

open access: yesPolicy &Internet, Volume 17, Issue 3, September 2025.
ABSTRACT Businesses that develop digital products and services often anticipate generic users, paying insufficient attention to the needs and rights of children who may use or be impacted by their practices. This article investigates the potential of child rights impact assessment (CRIA) as a policy tool to protect and respect children's rights in the ...
Sonia Livingstone, Kruakae Pothong
wiley   +1 more source

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