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981.
Gorji Shaghayegh Gorji Ali 《Environmental science and pollution research international》2021,28(13):15575-15579
Environmental Science and Pollution Research - In addressing the current COVID-19 pandemic and evaluating the measures taken by global leaders so far, it is crucial to trace back the circumstances... 相似文献
982.
Raza Syed Ali Qureshi Muhammad Asif Ahmed Maiyra Qaiser Shahzad Ali Ramsha Ahmed Farhan 《Environmental science and pollution research international》2021,28(2):1426-1442
Environmental Science and Pollution Research - The study aims to analyze two objectives: first is to explore the non-linear relationship between tourism development, economic growth, urbanization,... 相似文献
983.
Homayonibezi Nasrin Dobaradaran Sina Arfaeinia Hossein Mahmoodi Marzieh Sanati Ali Mohammad Farzaneh Mohammad Reza Kafaei Raheleh Afsari Maryam Fouladvand Moradali Ramavandi Bahman 《Environmental science and pollution research international》2021,28(12):14882-14892
Environmental Science and Pollution Research - This work aimed to explore the concentration of nickel, manganese, iron, copper, chromium, and lead in the milk of goat herds in the industrial area... 相似文献
984.
Warsame Abdimalik Ali Sheik-Ali Ibrahim Abdukadir Ali Abdullahi Osman Sarkodie Samuel Asumadu 《Environmental science and pollution research international》2021,28(16):19838-19850
Environmental Science and Pollution Research - The purpose of this research examination is to ascertain the effect of climate change, measured rainfall, temperature, and CO2, on crop production by... 相似文献
985.
Ali Baghaei 《Journal of Loss Prevention in the Process Industries》2013,26(6):1257-1261
Introduced by IEC-61508 standard, safety integrity levels (SIL) have been used for assessing the reliability of safety instrumented functions (SIF) for protection of the system under control in abnormal conditions. Different qualitative, semi-qualitative and quantitative methods have been proposed by the standard for establishing target safety integrity levels amongst which “Risk Graph” has gained wide attention due to its simplicity and easy-to-apply characteristics. However, this method is subject to many deficiencies that have forced industry men and experts to modify it to fit their demands. In this paper, a new modification to risk graph parameters has been proposed that adds more flexibility to them and reduces their subjective uncertainties but keeps the method as simple as before. Three parameters, namely severity (S), hazard avoidance probability (P), and demand rate (W) are used instead of former four parameters. Hence, the method is named SPW. The outcome results of this method can be directly converted to probability of failure on demand (PFD) or risk reduction factor (RRF). The proposed method has been tested on an example case that has been studied before with conventional risk graph and LOPA techniques. The results show that new method agrees well with LOPA and reduces costs imposed by conservative approximations assumed during application of conventional risk graph. 相似文献
986.
Ali Jamshidi Abdolreza Yazdani-Chamzini Siamak Haji Yakhchali Sohrab Khaleghi 《Journal of Loss Prevention in the Process Industries》2013,26(1):197-208
The problem of less and/or even lack of information and uncertainty in modeling and decision making plays a key role in many engineering problems; so that, it results in designers and engineers could not reach to sure solutions for the problems under consideration. In this paper, an application of the fuzzy logic for modeling the uncertainty involved in the problem of pipeline risk assessment is developed. For achieving the aim, relative risk score (RRS) methodology, one of the most popular techniques in pipeline risk assessment, is integrated with fuzzy logic. The proposed model is performed on fuzzy logic toolbox of MATLAB® using Mamdani algorithm based on experts' knowledge. A typical case study is implemented and a comparison between the classical risk assessment approach and the proposed model is made. The results demonstrate that the proposed model provides more accurate, precise, sure results; so that, it can be taken into account as an intelligent risk assessment tool in different engineering problems. 相似文献
987.
Mike Kolich Salem M. Taboun Ali I. Mohamed 《International journal of occupational safety and ergonomics》2013,19(1):113-128
This investigation was conducted to determine the effects of a massaging lumbar support system on low back muscle activity. The apparatus included a luxury-level automobile seat, six 10-mm diameter bipolar surface electrodes, an amplifier, an analog-to-digital conversion board, data acquisition software, and a personal computer. Six experimental conditions, each involving a variation of massage time, were considered. The dependent variable was the change in the root mean square variation of the EMG signal. One minute of lumbar massage every 5 min was found to have a beneficial effect on low back muscle activity (as compared to no massage). This may prove to be an extremely important result in the quest to combat low back pain attributable to automobile seating. 相似文献
988.
K. Mohamed Ali B.W.C. Sathiyasekaran 《International journal of occupational safety and ergonomics》2013,19(3):319-325
Carpal Tunnel Syndrome (CTS) is an important problem among computer professionals. Hence the prevalence of CTS among computer professionals and risk factors were studied. 648 subjects were selected from 4,276 computer professionals from 21 companies with a simple random sampling method. CTS was diagnosed based on clinical features.The prevalence of CTS was found to be 13.1% (95% CI 10.5–15.7%). Subjects with over 8 years of computer work, over 12 hrs of work per day and system administrators were at a higher risk for CTS (OR 3.3, 4.9 and 2.5 respectively). Flexed or extended hand position had higher risk for CTS.Higher risk for CTS was found with higher exposure to computer work. Ergonomic considerations are important in facilitating proper positioning of hand while working with a computer. Further studies on CTS risk factors among computer professionals are essential for planning prevention. 相似文献
989.
Cutoff grade specifies the available supply of metallic ore from an open pit mine to the multiple processing streams of an open pit mining complex. An optimal cutoff grade strategy maximizes the net present value (NPV) of an open pit mining operation subject to the mining, processing, and marketing/refining capacity constraints. Even though, the quantities of material flowing from the mine to the market are influenced by the expected variation in the available metal content or inherent uncertainty in the supply of ore, the majority of cutoff grade optimization models not only disregard this aspect and may lead to unrealistic cash flows, but also they are limited in application to an open pit mining operation with single processing facility. The model proposed herein determines the optimal cutoff grade policy based on a stochastic framework that accounts for uncertainty in supply of ore to the multiple ore processing streams. An application on a large-scale open pit mining operation develops a unique cutoff grade policy along with a portfolio of mining, processing, and marketing/refining rates. Owing to the geological uncertainty, the approach addresses risk by showing a difference of 14% between the minimum and maximum production rates, cash flows and NPV. 相似文献
990.
Breadfruit (Artocarpus altilis, Moraceae) is a traditionally cultivated, high-energy, high-yield crop, but widespread use of the plant for food is limited
by poor quality and poor storage properties of the fruit. A unique field genebank of breadfruit species and cultivars exists
at the National Tropical Botanical Garden in the Hawaiian Islands and is an important global resource for conservation and
sustainable use of breadfruit. However, this plant collection could be damaged by a random natural disaster such as a hurricane.
We have developed a highly efficient in vitro plant propagation system to maintain, conserve, mass propagate, and distribute
elite varieties of this important tree species. Mature axillary shoot buds were collected from three different cultivars of
breadfruit and proliferated using a cytokinin-supplemented medium. The multiple shoots were maintained as stock cultures and
repeatedly used to develop whole plants after root differentiation on a basal or an auxin-containing medium. The plantlets
were successfully grown under greenhouse conditions and were reused to initiate additional shoot cultures for sustained production
of plants. Flow cytometry was used to determine the nuclear deoxyribonucleic acid content and the ploidy status of the in
vitro grown population. The efficacy of the micropropagation protocols developed in this study represents a significant advancement
in the conservation and sustained mass propagation of breadfruit germplasm in a controlled environment free from contamination. 相似文献