全文获取类型
收费全文 | 706篇 |
免费 | 5篇 |
国内免费 | 19篇 |
专业分类
安全科学 | 18篇 |
废物处理 | 56篇 |
环保管理 | 68篇 |
综合类 | 45篇 |
基础理论 | 102篇 |
污染及防治 | 264篇 |
评价与监测 | 129篇 |
社会与环境 | 43篇 |
灾害及防治 | 5篇 |
出版年
2023年 | 14篇 |
2022年 | 65篇 |
2021年 | 68篇 |
2020年 | 20篇 |
2019年 | 27篇 |
2018年 | 33篇 |
2017年 | 36篇 |
2016年 | 41篇 |
2015年 | 35篇 |
2014年 | 34篇 |
2013年 | 85篇 |
2012年 | 25篇 |
2011年 | 46篇 |
2010年 | 38篇 |
2009年 | 22篇 |
2008年 | 21篇 |
2007年 | 14篇 |
2006年 | 16篇 |
2005年 | 13篇 |
2004年 | 11篇 |
2003年 | 7篇 |
2002年 | 6篇 |
2001年 | 10篇 |
2000年 | 1篇 |
1999年 | 6篇 |
1998年 | 2篇 |
1997年 | 3篇 |
1996年 | 2篇 |
1995年 | 1篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1985年 | 3篇 |
1983年 | 1篇 |
1982年 | 3篇 |
1981年 | 2篇 |
1980年 | 2篇 |
1979年 | 3篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1975年 | 2篇 |
1972年 | 1篇 |
1964年 | 1篇 |
1963年 | 1篇 |
排序方式: 共有730条查询结果,搜索用时 31 毫秒
11.
12.
Nur Hamizah Mohtor Mohd Hafiz Dzarfan Othman Ahmad Fauzi Ismail Mukhlis A. Rahman Juhana Jaafar Nur Awanis Hashim 《Environmental science and pollution research international》2017,24(19):15905-15917
Despite its extraordinary price, ceramic membrane can still be able to surpass polymeric membrane in the applications that require high temperature and pressure conditions, as well as harsh chemical environment. In order to alleviate the high cost of ceramic material that still becomes one of the major factors that contributes to the high production cost of ceramic membrane, various attempts have been made to use low cost ceramic materials as alternatives to well-known expensive ceramic materials such as alumina, silica, and zirconia in the fabrication of ceramic membrane. Thus, local Malaysian kaolin has been chosen as the ceramic material in this study for the preparation of kaolin hollow fibre membrane since it is inexpensive and naturally abundant in Malaysia. Due to the fact that the sintering process plays a prominent role in obtaining the desired morphology, properties, and performances of prepared ceramic membrane, the aim of this work was to study the effect of different sintering temperatures applied (ranging from 1200 to 1500 °C) in the preparation of kaolin hollow fibre membrane via dry/wet phase inversion-based spinning technique and sintering process. The morphology and properties of membrane were then characterised by SEM, AFM, FTIR, XRD, and three-point bending test, while the performances of membrane were investigated by conducting water permeation and Reactive Black 5 (RB5) dye rejection tests. From the experimental results obtained, the sintering temperature of 1400 °C could be selected as the optimum sintering temperature in preparing the kaolin hollow fibre membrane with the dense sponge-like structure of separation layer that resulted in the good mechanical strength of 70 MPa with the appreciable water permeation of 75 L/h m2 bar and RB5 rejection of 68%. 相似文献
13.
W. H. Chan M. N. Mazlee Zainal Arifin Ahmad M. A. M. Ishak J. B. Shamsul 《Journal of Material Cycles and Waste Management》2017,19(2):794-803
The porous composites of clay and fly ash have the potential to be used in many fields, such as catalyst support and gas adsorbents. In this study, various ratios of fly ash (1–2) with different percentage of suspension (50–70 wt%) were applied to produce porous clay-fly ash composites via polymeric replica technique. Fabrication process starts by mixing clay and fly ash in distilled water to form slurry. The process is followed by fully immersing polymer sponge in slurry. The excess slurry is then removed through squeezing. Finally, the sponge coated with slurry is sintered at 500 and 1250 °C for 1 h. It is found that the compressive strength of porous composites improves significantly (0.178–1.28 MPa) when the amount of clay-fly ash suspension mixture (50–70 wt%) increases. The compressive strength of porous composites is mainly attributed to the mullite, quartz and amorphous phase formations. These results are supported by X-ray diffraction analysis. On the other hand, increase in the amount of suspension reduces the apparent density (from 2.44 to 2.32 g/cm3) and porosity (from 97 to 85 %). The reduction in apparent density is believed to be caused by the presence of high fly ash content in porous composites. The melted fly ash cenospheres have closed the internal pores and increased density of samples. Higher suspension level not only reduces porosity, but also increases close pores of the porous composites. The results are justified through the observation from the structures of porous clay-fly ash composites. 相似文献
14.
Rehman Abdul Ma Hengyun Chishti Muhammad Zubair Ozturk Ilhan Irfan Muhammad Ahmad Munir 《Environmental science and pollution research international》2021,28(14):17319-17330
Environmental Science and Pollution Research - The accelerated urbanization in China was already coupled with a steadily increasing demand for energy usage. The present study major aim was to... 相似文献
15.
Jafri Muhammad Afaq Haider Liu Huizheng Majeed Muhammad Tariq Ahmad Waheed Ullah Sana Xue Rui 《Environmental science and pollution research international》2021,28(13):16129-16139
Environmental Science and Pollution Research - This study explores the symmetric and asymmetric effects of physical infrastructure on energy consumption, economic growth, and air pollution of... 相似文献
16.
Ahmad Tasneem Nazar Sonaina Ahmad Kafeel Khan Zafar Iqbal Bashir Humayun Ashfaq Asma Munir Mudasra Munir Zunaira Hussain Khadim Alkahtani Jawaher Elshikh Mohamed Soliman Nadeem Muhammad Malik Ifra Saleem 《Environmental science and pollution research international》2021,28(23):29110-29116
Environmental Science and Pollution Research - The instant endeavor was undertaken to monitor copper (Cu) contents in water, soil, forage, and cow’s blood impacted by heavy automobiles in... 相似文献
17.
Majeed Muhammad Tariq Yu Zhiyuan Maqbool Adnan Genie Mesfin Ullah Sana Ahmad Waheed 《Environmental science and pollution research international》2021,28(31):41912-41921
Environmental Science and Pollution Research - This empirical study investigates the dynamic effects of economic freedom on economic growth and air quality for Pakistan over the period... 相似文献
18.
Badeenezhad Ahmad Radfard Majid Abbasi Fariba Jurado Anna Bozorginia Mehdi Jalili Mahrokh Soleimani Hamed 《Environmental science and pollution research international》2021,28(31):41937-41947
Environmental Science and Pollution Research - This study aimed to determine the effect of land-use changes on the non-carcinogenic health risk of nitrate ion exposure of underground drinking water... 相似文献
19.
A stress-based forming limit diagram for necking prediction which is based on the strain gradient theory of plasticity in conjunction with the M–K model has been represented and used in tube hydroforming. In this study, the finite element model for bulge forming of straight tube has been constructed and verified with published experimental data. The adaptive simulation technique is based on the ability to detect the onset and growth of defects (e.g., wrinkling, and bursting) and to promptly readjust the loading paths. Thus, a suitable load path has been obtained by applying Adaptive Simulation Method in ANSYS Parametric Design Language (APDL). 相似文献
20.
Wasaya Allah Saleem Muhammad Abid Ahmad Jamil Nazam Muhammad Khan M. Mohsin Ali Ishfaq Mohammad 《Environment, Development and Sustainability》2021,23(9):13418-13435
Environment, Development and Sustainability - The current study explores the role of green trust, green perceived risk and green perceived quality in changing green purchase intention.... 相似文献