全文获取类型
收费全文 | 20454篇 |
免费 | 1820篇 |
国内免费 | 2065篇 |
专业分类
安全科学 | 8159篇 |
废物处理 | 313篇 |
环保管理 | 2904篇 |
综合类 | 7809篇 |
基础理论 | 1583篇 |
环境理论 | 18篇 |
污染及防治 | 840篇 |
评价与监测 | 907篇 |
社会与环境 | 868篇 |
灾害及防治 | 938篇 |
出版年
2024年 | 79篇 |
2023年 | 364篇 |
2022年 | 652篇 |
2021年 | 820篇 |
2020年 | 874篇 |
2019年 | 775篇 |
2018年 | 531篇 |
2017年 | 888篇 |
2016年 | 859篇 |
2015年 | 1033篇 |
2014年 | 930篇 |
2013年 | 1168篇 |
2012年 | 1510篇 |
2011年 | 1684篇 |
2010年 | 1177篇 |
2009年 | 1220篇 |
2008年 | 888篇 |
2007年 | 1339篇 |
2006年 | 1332篇 |
2005年 | 1013篇 |
2004年 | 799篇 |
2003年 | 765篇 |
2002年 | 633篇 |
2001年 | 529篇 |
2000年 | 431篇 |
1999年 | 342篇 |
1998年 | 256篇 |
1997年 | 235篇 |
1996年 | 206篇 |
1995年 | 164篇 |
1994年 | 141篇 |
1993年 | 134篇 |
1992年 | 85篇 |
1991年 | 62篇 |
1990年 | 50篇 |
1989年 | 40篇 |
1988年 | 45篇 |
1987年 | 26篇 |
1986年 | 21篇 |
1985年 | 23篇 |
1984年 | 14篇 |
1983年 | 14篇 |
1982年 | 26篇 |
1981年 | 23篇 |
1980年 | 19篇 |
1979年 | 20篇 |
1978年 | 17篇 |
1977年 | 14篇 |
1972年 | 18篇 |
1971年 | 21篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
Simo Salminen Anne Seppälä 《International journal of occupational safety and ergonomics》2013,19(4):389-397
The aim of this study was to compare assessments made by Finnish- and Swedish-speaking workers in Finland about the safety climate in their companies, because an earlier study showed that the accident frequency of Swedish-speaking workers was one third lower than that of Finnish-speaking workers. 148 Finnish-speaking and 138 Swedish-speaking workers from 14 small and medium-sized companies participated in this study. They filled out a Finnish safety climate questionnaire, the reliability of which was above the acceptable level. There were no differences between the language groups in the total variables of safety climate and safety action. Based on the differences in single items, we interpreted that Swedish-speaking workers stressed collective safety more, whereas Finnish-speaking workers put more emphasis on their personal responsibility for safety. 相似文献
72.
Mohammad Muhshin Aziz Khan Zaheed Ibne Halim Mohammad Iqbal 《International journal of occupational safety and ergonomics》2013,19(3):327-341
Case-study research was carried out with a view to find the attributes of occupational injury among workers in the chemical industry and to enhance safety issues. Injury data were collected and processed in terms of different variables, such as age, gender, skills, type of hazard, etc. Pareto analysis was then applied to find a pattern of occupational injury among the workers. The study revealed that 79.52% of the injured workers were in the 40–59 age group; 57.14% of accidents occurred during the 1st shift; 73.26% of accidents caused injury to hands, feet, chest to thigh, arms and eyes; and 70.93% of injuries were caused by pumps, carrying and lifting, vehicles, pipelines, valves, and grinding. Surprisingly, no one was injured in the group of temporary workers. The paper also provides specific suggestions followed by some action plans. 相似文献
73.
74.
René M. Rossi Walter Bolli Rolf Stämpfli 《International journal of occupational safety and ergonomics》2013,19(1):55-60
Heat and mechanical protection properties of 6 fabric combinations commonly used in firefighters’ protective clothing were assessed before and after different heat treatment. It was shown that after heat exposure, the values obtained were generally lower than in the original state. The mechanical properties of the materials were more affected by heat than by heat protective properties. In 2 cases, degradation started before a visible change in the material could be observed, which might be potentially dangerous for the end user who will not realize the alteration of the material. 相似文献
75.
Piotr Konieczny Jacek Świderski Andrzej Zając 《International journal of occupational safety and ergonomics》2013,19(2):133-147
This paper presents a computer simulation of reflected and scattered laser radiation for calculating the angle of laser shields performed with the Laser Shield Solver computer program. The authors describe a method of calculating the shield angle for laser shields which protect workers against reflected and scattered laser radiation and which are made from different materials. The main assumptions of the program, which calculates and simulates reflected laser radiation from any material and which can be used for designing shield angles, are presented. Calculations are compared with measurements of reflected laser radiation. The results for one type of laser and different materials which interacted with a laser beam showed that the Laser Shield Solver was an appropriate tool for designing laser shields and its simulations of reflected laser radiation distribution have practical use. 相似文献
76.
Alison D. MacEachern Sharon Jackson 《International journal of occupational safety and ergonomics》2013,19(4):329-339
Child protection is an area of police work which has expanded in the last decade, leading to an increase in the number of police officers working in departments which specialise in investigating cases of child abuse. Police officers in this field may be at greater risk of experiencing secondary traumatic stress but there remains a paucity of research in this area of policing. Analogies can be drawn to existing research in policing and with social service workers involved in child protection. The paper finishes off with implications for police forces to ensure safe working environments and appropriate counselling for employees. 相似文献
77.
Danijela Tadic Marko Djapan Miladin Stefanovic Dragan D. Milanovic 《International journal of occupational safety and ergonomics》2013,19(2):115-126
AbstractManaging occupational safety in any kind of industry, especially in processing, is very important and complex. This paper develops a new method for occupational risk assessment in the presence of uncertainties. Uncertain values of hazardous factors and consequence frequencies are described with linguistic expressions defined by a safety management team. They are modeled with fuzzy sets. Consequence severities depend on current hazardous factors, and their values are calculated with the proposed procedure. The proposed model is tested with real-life data from fruit processing firms in Central Serbia. 相似文献
78.
Erna von Heimburg Jon Ingulf Medbø Mariann Sandsund Randi Eidsmo Reinertsen 《International journal of occupational safety and ergonomics》2013,19(2):227-243
Aim. Firefighters must meet minimum physical demands. The Norwegian Labour Inspection Authority (NLIA) has approved a standardised treadmill walking test and 3 simple strength tests for smoke divers. The results of the Trondheim test were compared with those of the NLIA tests taking into account possible effects of age, experience level and gender. Methods. Four groups of participants took part in the tests: 19 young experienced firefighters, 24 senior male firefighters and inexperienced applicants, 12 male and 8 female. Results. Oxygen uptake (VO2) at exhaustion rose linearly by the duration of the treadmill test. Time spent on the Trondheim test was closely related to performance time and peak VO2 on the treadmill test. Senior experienced firefighters did not perform better than equally fit young applicants. However, female applicants performed poorer on the Trondheim test than on the treadmill test. Performance on the Trondheim test was not closely related to muscle strength beyond a minimum. Conclusion. Firefighters completing the Trondheim test in under 19 min fit the requirements of the NLIA treadmill test. The Trondheim test can be used as an alternative to the NLIA tests for testing aerobic fitness but not for muscular strength. Women’s result of the Trondheim test were poorer than the results of the NLIA treadmill test, probably because of their lower body mass. 相似文献
79.
Teimour Allahyari Narmin Hassanzadeh Rangi Hamidreza Khalkhali Yahya Khosravi 《International journal of occupational safety and ergonomics》2013,19(1):175-180
Introduction. The majority of industrial accidents occur because of human errors. Human error has different causes, however, in all cases cognitive abilities and limitations of human play an important role. Occupational cognitive failures are cognitively-based human errors that occur at work. The aim of this study was to examine the relationship between occupational cognitive failures and safety consequences. Method. Personnel of a large industrial company in Iran filled out an occupational cognitive failure questionnaire (OCFQ) and answered questions on accidents. Univariate and multiple logistic regression analysis were used to determine the relationship between cognitive failures and safety consequences. Results. According to developed regression models, personnel with a high rate of cognitive failure, in comparison to low rate, have a high risk of minor injury involvement (OR 5.1, 95% CI [2.62, 10.3]); similar results were for major injury and near miss. Discussion. The results of this study revealed usefulness of the OCFQ as a tool of predicting safety-related consequences and planning preventive actions. 相似文献
80.
Thai food industry employs a massive number of skilled and unskilled workers. This may result in an industry with high incidences and accident rates. To improve safety and reduce the accident figures, this paper investigates factors influencing safety implementation in small, medium, and large food companies in Thailand. Five factors, i.e., management commitment, stakeholders’ role, safety information and communication, supportive environment, and risk, are found important in helping to improve safety implementation. The statistical analyses also reveal that small, medium, and large food companies hold similar opinions on the risk factor, but bear different perceptions on the other 4 factors. It is also found that to improve safety implementation, the perceptions of safety goals, communication, feedback, safety resources, and supervision should be aligned in small, medium, and large companies. 相似文献