全文获取类型
收费全文 | 412篇 |
免费 | 35篇 |
国内免费 | 89篇 |
专业分类
安全科学 | 130篇 |
废物处理 | 3篇 |
环保管理 | 44篇 |
综合类 | 203篇 |
基础理论 | 71篇 |
污染及防治 | 24篇 |
评价与监测 | 21篇 |
社会与环境 | 25篇 |
灾害及防治 | 15篇 |
出版年
2024年 | 2篇 |
2023年 | 3篇 |
2022年 | 14篇 |
2021年 | 23篇 |
2020年 | 11篇 |
2019年 | 24篇 |
2018年 | 16篇 |
2017年 | 10篇 |
2016年 | 26篇 |
2015年 | 21篇 |
2014年 | 21篇 |
2013年 | 42篇 |
2012年 | 37篇 |
2011年 | 28篇 |
2010年 | 32篇 |
2009年 | 21篇 |
2008年 | 22篇 |
2007年 | 44篇 |
2006年 | 28篇 |
2005年 | 26篇 |
2004年 | 17篇 |
2003年 | 17篇 |
2002年 | 8篇 |
2001年 | 8篇 |
2000年 | 6篇 |
1999年 | 4篇 |
1998年 | 6篇 |
1997年 | 2篇 |
1996年 | 5篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1993年 | 2篇 |
1992年 | 3篇 |
1991年 | 3篇 |
1979年 | 1篇 |
排序方式: 共有536条查询结果,搜索用时 31 毫秒
121.
122.
针对目前我国PPE(个体防护装备)在作业场所的管理存在诸多问题,需要进一步加强对PPE的监管。为了构建PPE在作业场所中安全有效的信息管理平台,因此首要的基础性工作就是对PPE信息进行标准化,本文提出了PPE信息的线面分类,业务流程分析等方法,研究了数据元的标准化过程,结果确立了用户信息、人事信息、PPE信息、选型规则信息作为PPE信息管理平台层级数据元目录,确定了用户编号、地区代码、PPE类别代码、工种等86个数据元,基本涵盖了建立在作业场所中PPE信息平台所需要的数据信息,能为后续建立PPE智能选型数据库平台系统提供理论基础和技术支持。 相似文献
123.
Employees' recovery from the effects of occupational stress can be affected by their actions during time away from work. Conservation of resources theory argues that a key to an effective stress recovery process is the replenishment of resources during off‐work time (a weekend in the present study). We test a model of the stress recovery process during a weekend whereby two recovery mechanisms (weekend activities and recovery experiences) improve two personal resources (self‐regulatory capacity and state optimism), subsequently affecting psychological outcomes (work engagement and burnout) at the start of the next workweek. Employees (n = 233) from various jobs responded to online surveys before and after a weekend. Controlling for pre‐weekend resource levels and psychological outcomes assessed on Friday, the two weekend stress recovery mechanisms (weekend activities and recovery experiences) contributed to improving or maintaining self‐regulatory and optimism resources on Monday. Of note, psychological detachment may result in less rather than more of the resource of state optimism on Monday. Monday resource levels were linked to improved work engagement and burnout. As proposed by conservation of resources theory, employees can benefit from participating in activities that replenish resources necessary to meet work demands upon returning to work after a weekend. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
124.
Kurt Jung 《International journal of occupational safety and ergonomics》2013,19(2):108-117
By establishing the internal market, the European Union intended to create an area in which safety and health at work are guaranteed. For this purpose, a series of directives was passed.The EC Directive 89/686/EEC “Approximation of the laws of the Member States relating to personal protective equipment” is of particular interest to the manufacturers of personal protective equipment (PPE). On the European level, harmonized standards, that put these basic health and safety requirements into more concrete terms have to be available. The European Standardizing Committee (CEN) is charged with the elaboration of European standards.A total of 176 standards relating to personal protective equipment have to be setup; 57 of them are available at present. All CEN members are obliged to transpose them without modification into national standards. Formerly existing national standards have to be withdrawn.Existing European standards sometimes show deficiencies regarding the specification of requirements according to Directive 89/686/EEC: the standardization of PPE for special fields of application and insufficient harmonization of provisions for different PPE serving the same protective purpose. Test methods are not always described precisely enough. 相似文献
125.
《组织行为杂志》2017,38(1):87-107
Recent research has established a positive relationship between humor in leadership and organizational behavior variables. However, neither the mechanisms nor the boundary conditions of the positive effects of humor in leadership are completely understood. In this study, we contribute to these questions by investigating the relationship between humor in leadership and follower commitment and burnout in more detail. We propose that these relationships unfold via a relational process and specified this relational process in terms of leader–member exchange. Moreover, we assume that these relationships depend on followers' personal need for structure. We tested the hypothesized moderated‐mediation model in a two‐wave survey study with 142 employees. Our results support the proposed model. We found the predicted indirect effect of humor on commitment and disengagement to be stronger for followers low in need for structure. However, we did not find the proposed effects for emotional exhaustion. We discuss implications for leadership theory, humor theory, and for leadership training and practice. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
126.
Joachim Lambert 《International journal of occupational safety and ergonomics》2013,19(2):179-184
Conformity assessment procedures prescribed by European legislation are presented and their concrete implementation is illustrated by the example of personal protective equipment (PPE). The different categories of PPE defined by Council Directive 89/686/EEC are explained with reference to the applicable conformity assessment elements. Quality assurance of production is presented as the central element of the conformity assessment procedure for complex PPE. Special emphasis is put on the necessity of having a regular exchange of views and information among notified bodies in Europe. Ways in which third countries can eventually carry out conformity assessment on the basis of a contract with the European Community Commission are explained. 相似文献
127.
泡沫液的发泡比和半衰期是表征起泡剂特性的基本物理量.选用十二烷基硫酸钠为典型的表面活性剂,测量了不同质量分数溶液的表面张力,得到试验条件下的临界胶束浓度(CMC)为0.25%,采用改进的Ross-Mile法、搅拌法和测压力法,在相同的环境下对同一溶液进行发泡试验,其中测压力法可以得到表征重力排液和扩散排液过程等泡沫破灭过程的定量数据.结果表明,发泡比因起泡方法的不同而有较大差异,在相同质量分数下,测压力法的起泡量最大而搅拌法的起泡量最小,3种方法所产生的发泡体积随质量分数的变化趋势一致,当表面活性剂质量分数≥0.25% (CMC)时,搅拌法、Ross-Mile法和测压力法的发泡体积比为1:1.25:1.36.3种方法所产生泡沫的半衰期随表面活性剂质量分数增加而增大,达到最大值后缓慢减小,有相似的变化趋势,测压力法、Ross-Mile法和搅拌法的半衰期之比约为1:3:6,分析了3种方法所产生泡沫的发泡比和半衰期差异的原因. 相似文献
128.
A double‐edged sword: The moderating role of conscientiousness in the relationships between work stressors,psychological strain,and job performance 下载免费PDF全文
Although conscientiousness was commonly viewed as a type of personal resource to help individuals reduce strain or mitigate the impacts of stressors, empirical research demonstrated mixed results. Based on the personal resource allocation perspective, we posited that rather than functioning as personal resource per se, conscientiousness may act as a key factor influencing how individuals allocate their personal resources. The current study examined the moderating roles of conscientiousness in the relationships that work stressors (i.e., challenge stressors and hindrance stressors) have with employee psychological strain and job performance by using multi‐source, time‐lagged data collected from 250 employees working at two companies. The results showed that both challenge stressors and hindrance stressors were positively related to psychological strain. Conscientiousness moderated the relationships between both stressors and psychological strain, such that the positive relationships were stronger for individuals with high conscientiousness. Conscientiousness also moderated the relationship between challenge stressors and performance, such that the relationship was positive for individuals with high conscientiousness but negative for those with low conscientiousness. Altogether, the findings suggest that conscientiousness acts as a double‐edged sword that both promotes performance and exacerbates the stress reaction of employees when they are confronted with stressful situations. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
129.
It pays to have an eye for emotions: Emotion recognition ability indirectly predicts annual income 下载免费PDF全文
Tassilo Momm Gerhard Blickle Yongmei Liu Andreas Wihler Mareike Kholin Jochen I. Menges 《组织行为杂志》2015,36(1):147-163
This study integrates the emotion and social influence literatures to examine how emotion recognition ability (ERA) relates to annual income. In a sample of 142 employee–peer–supervisor triads from a broad range of jobs and organizations, we find that people's level of ERA indirectly relates to how much they earn per year. The relationship between ERA and annual income is mediated sequentially through political skill and interpersonal facilitation. The results imply that emotional abilities allow people not only to process affect‐laden information effectively but also to use this information to successfully navigate the social world of organizations in the pursuit of prosperity. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
130.
山西是中国环境污染最为严重的省区之一,经济发展与环境保护的矛盾非常突出.开展排污权有偿使用和交易,是山西省创新环保机制体制、服务经济社会发展的迫切需要.2010年,山西省获批成为国家排污权交易试点省份之一.概括总结了山西省排污权交易的实践及存在问题,提出今后要在合理核定和分配初始排污权、积极创新排污权质押与租赁机制、加强排污量监测核定等方面积极开展工作体制机制创新,把试点工作推向深入的政策建议. 相似文献