全文获取类型
收费全文 | 275篇 |
免费 | 2篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 29篇 |
废物处理 | 31篇 |
环保管理 | 22篇 |
综合类 | 12篇 |
基础理论 | 33篇 |
污染及防治 | 81篇 |
评价与监测 | 54篇 |
社会与环境 | 16篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 2篇 |
2022年 | 37篇 |
2021年 | 15篇 |
2020年 | 11篇 |
2019年 | 11篇 |
2018年 | 17篇 |
2017年 | 36篇 |
2016年 | 19篇 |
2015年 | 12篇 |
2014年 | 11篇 |
2013年 | 43篇 |
2012年 | 19篇 |
2011年 | 12篇 |
2010年 | 6篇 |
2009年 | 3篇 |
2008年 | 7篇 |
2007年 | 6篇 |
2006年 | 3篇 |
2005年 | 2篇 |
2004年 | 1篇 |
2003年 | 1篇 |
2000年 | 1篇 |
1997年 | 1篇 |
1992年 | 1篇 |
1987年 | 1篇 |
1986年 | 1篇 |
排序方式: 共有279条查询结果,搜索用时 15 毫秒
231.
Saman Ghahri Behbood Mohebby Antonio Pizzi Ahmad Mirshokraie Hamid Reza Mansouri 《Journal of Polymers and the Environment》2018,26(5):1881-1890
In this research tannic acid was used to prepare soy-based adhesives for making plywood and fiber board. The different resin formulations were analyzed by Differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and its derivative as a function of temperature (DTG) and Fourier Transform Infra-red (FTIR) spectroscopy. The results showed that the addition of tannic acid to soy-based adhesive decreased soy-based adhesive viscosity and its pH. The DSC analysis showed that the denaturation temperature of soy-based adhesives decrease by adding tannic acid. The TGA and DTG curves showed that the thermal degradation of soy flour starts above 146 °C. The FTIR spectroscopy results also showed that the soy flour amino acids appeared to react well with tannic acid. Furthermore, delamination and shear strength test results showed the good water resistance of plywood bonded with soy-based tannic acid-modified adhesive. The mechanical and physical properties such as MOR, MOE, IB, and water resistance of fiberboard were improved, by adding tannic acid to the soy-based adhesive. 相似文献
232.
This study employs the Taguchi optimization methodology to optimize the effective parameters for the pesticide (Vapam) sorption onto soil modified with natural zeolite (clinoptilolite). The experimental factors and their ranges chosen for determination of the effective parameters were: initial Vapam concentration (0.4-1.6 mg/L), initial pH of the pesticide solution (2-12), the percentage of clinoptilolite in the modified soil (0-6 %), temperature (15-35°C) and shaking time (2-24 h). The orthogonal array (OA) L(16) and the bigger the better response category of the Taguchi method were selected to determine the optimum conditions: initial Vapam concentration (1.2 mg/L), initial pH of the pesticide solution (2), the percentage of clinoptilolite in the modified soil (4 %), temperature (15°C) and shaking time (2 h). The results showed that in comparison with other parameters, the initial Vapam concentration was the most effective one for the sorption of this pesticide onto soil, modified with clinoptilolite. Moreover, after determining the optimum levels of the sorption process parameters, confirmation experiments were performed to prove the effectiveness of the Taguchi's experimental design methodology. 相似文献
233.
The Karoon River basin, with a basin area of 67,000 km2, is located in the southern part of Iran. Monthly measurements of the discharge and the water quality variables have been
monitored at the Gatvand and Khorramshahr stations of the Karoon River on a monthly basis for the period 1967–2005 and 1969–2005
for Gatvand and Khorramshahr stations, respectively. In this paper the time series of monthly values of water quality parameters
and the discharge were analyzed using statistical methods and the existence of trends and the evaluation of the best fitted
models were performed. The Kolmogorov–Smirnov test was used to select the theoretical distribution which best fitted the data.
Simple regression was used to examine the concentration-time relationships. The concentration-time relationships showed better
correlation in Khorramshahr station than that of Gatvand station. The exponential model expresses better concentration – time
relationships in Khorramshahr station, but in Gatvand station the logarithmic model is more fitted. The correlation coefficients
are positive for all of the variables in Khorramshahr station also in Gatvand station all of the variables are positive except
magnesium (Mg2+), bicarbonates () and temporary hardness which shows a decreasing relationship. The logarithmic and the exponential models describe better
the concentration-time relationships for two stations. 相似文献
234.
Sahar Ghaleh Manouchehr Omidvari Parvin Nassiri Mansour Momeni Seyed Mohammadreza Miri Lavasani 《Environmental monitoring and assessment》2018,190(2):97
Accidents are among the main problems in the oil product supply chain. The most important effective factors in these events are the kind of trucks used and their health, safety, and environment (HSE) condition. The aim of this study was to present a conceptual pattern of the HSE performance of oil trucks in oil industries. In this study, 20 truck models (with fixed tanks), in use over different periods of time, were investigated. In this regard, the criteria and sub-criteria were first determined in two parts—carrier and tank—and weighted by fuzzy analytical hierarchy process (FAHP). The results showed that the most important sub-criteria regarding the HSE factors of the carrier were resistance and strength of the front and rear shields, the brake system, and the ventilation system. The most important sub-criteria regarding the HSE factors of the tank were tank shell thickness and a good tank design shape with respect to portable material. It should be noted that the weight of the criteria with each other and sub-criteria with each other are not equal. This issue is important for decision-making. The main reason for the use of trucks with the lowest score in developing countries is the lack of attention by managers to safety issues and international standards and agreements such as the ADR. 相似文献
235.
Khoshakhlagh Amir Hossein Beygzadeh Mojtaba Golbabaei Farideh Saadati Zohreh Carrasco-Marín Francisco Shahtaheri Seyed Jamaleddin 《Environmental science and pollution research international》2020,27(35):44022-44035
Environmental Science and Pollution Research - In the present paper, micro-mesoporous Fe-MIL-101/OAC composite using in situ incorporation of Fe-MIL-101 into oxidized activated carbon was... 相似文献
236.
Groundwater Vulnerability Assessment Using Fuzzy Logic: A Case Study in the Zayandehrood Aquifers, Iran 总被引:3,自引:0,他引:3
Groundwater is an important source of water, especially in arid and semi-arid regions where surface water is scarce. Groundwater pollution in these regions is consequently a major concern, especially as pollution control and removal in these resources are not only expensive but at times impossible. It is, therefore, essential to prevent their contamination in the first place by properly identifying vulnerable zones. One method most commonly used for evaluating groundwater pollution is the DRASTIC method, in which the Boolean logic is used to rank and classify the parameters involved. Problems arise, however, in the application of the Boolean logic. In this paper, the fuzzy logic has been used to avoid the problems. For this purpose, three critical cases of minimum, maximum, and mean values have been considered for the net recharge parameter. The process has been performed on the Zayandehrood river basin aquifers. The fuzzy-DRASTIC vulnerability map thus obtained indicates that the western areas of the basin generally have the maximum pollution potential followed by the areas located in the east. The central parts of the study area are found to have a low pollution potential. Finally, two sensitivity analyses are performed to show the significance of each value of the net recharge parameter in the calculation of vulnerability index. 相似文献
237.
238.
Naghdali Hosseinzadeh Hamid Kazem Masoud Ghahremannejad Ehsan Ahmadi Navid Kazem 《Journal of Loss Prevention in the Process Industries》2013,26(4):666-675
API650-2008 is one of the prominent codes consisting of seismic specifications to design steel storage tanks for earthquakes resistance. In spite of the code's broad application, there are some failure modes such as slide bottom, elephant-foot buckling, sloshing and uplift needing more evaluation. In this paper, 161 existing tanks in an oil refinery complex have been classified into 24 groups and investigated using both API650-2008 rules and numerical FEM models. Failure modes and dynamic characteristics of studied models have been calculated by numerical FEM analysis and compared with code requirements. The results demonstrate that, in some cases, there are some imperfections in the code requirements that require further investigation. 相似文献
239.
Mohammad Hossein Keshavarz Narges Zohari Seyed Abolfazl Seyedsadjadi 《Journal of Loss Prevention in the Process Industries》2013,26(6):1452-1456
This study presents a new simple correlation between electric spark sensitivity of nitramines and their activation energies of thermolysis, which are important for safety measures in industrial processes. The new correlation can help to elucidate the mechanism of initiation of energetic materials by electric spark. It can be used to predict the magnitude of electric spark sensitivity of new nitramines, which is difficult to measure. The methodology assumes that electric spark sensitivity of a nitramine with general formula CaHbNcOd can be expressed as a function of its activation energy of thermal decomposition as well as optimized elemental composition and the contribution of specific molecular structural parameters. The new correlation has the root mean square and the average deviations of 1.37 and 1.09 J, respectively, for 21 nitramines with different molecular structures. The proposed new method is also tested for 16 nitramines so that there is no experimental data of electrostatic sensitivity for them. 相似文献
240.
Ghamari Roya Mahdavi-Mazdeh Mohammad Ghannadpour Seyed Farid 《Environment, Development and Sustainability》2022,24(8):10403-10441
Environment, Development and Sustainability - This study addresses the problem of selecting a supplier bound by sustainability and resilience criteria, focusing on the steel industry as a case in... 相似文献