全文获取类型
收费全文 | 257篇 |
免费 | 1篇 |
国内免费 | 10篇 |
专业分类
安全科学 | 5篇 |
废物处理 | 14篇 |
环保管理 | 37篇 |
综合类 | 43篇 |
基础理论 | 55篇 |
污染及防治 | 63篇 |
评价与监测 | 35篇 |
社会与环境 | 16篇 |
出版年
2023年 | 2篇 |
2022年 | 26篇 |
2021年 | 13篇 |
2020年 | 8篇 |
2019年 | 6篇 |
2018年 | 7篇 |
2017年 | 13篇 |
2016年 | 5篇 |
2015年 | 6篇 |
2014年 | 11篇 |
2013年 | 22篇 |
2012年 | 9篇 |
2011年 | 17篇 |
2010年 | 11篇 |
2009年 | 15篇 |
2008年 | 10篇 |
2007年 | 9篇 |
2006年 | 11篇 |
2005年 | 10篇 |
2004年 | 7篇 |
2003年 | 3篇 |
2002年 | 4篇 |
2001年 | 1篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 3篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1980年 | 2篇 |
1979年 | 4篇 |
1978年 | 1篇 |
1976年 | 5篇 |
1975年 | 1篇 |
1974年 | 4篇 |
1973年 | 3篇 |
1972年 | 2篇 |
1971年 | 2篇 |
1967年 | 1篇 |
1965年 | 1篇 |
1964年 | 1篇 |
1962年 | 1篇 |
1961年 | 1篇 |
1959年 | 1篇 |
1955年 | 1篇 |
排序方式: 共有268条查询结果,搜索用时 15 毫秒
1.
Desai Komal Dharaskar Swapnil Khalid Mohammad Gupta Thummalapalli Chandra Sekhara Manikyam 《Environmental science and pollution research international》2021,28(21):26747-26761
Environmental Science and Pollution Research - The novel phosphonium-based ionic liquid (IL), triphenyl methyl phosphonium tosylate ([TPMP][Tos]), has been synthesized and applied as a phase... 相似文献
2.
3.
4.
5.
6.
7.
8.
Pal Kalyanbrata Rakshit Subham Mondal Keshab Chandra Halder Suman Kumar 《Environmental science and pollution research international》2021,28(42):58915-58928
Environmental Science and Pollution Research - Crustacean shell waste disposal is considered as biggest problem in seafood processing centers. Incineration and landfilling are the commonest ways of... 相似文献
9.
Chandra Nath Shiv G. Kapoor Richard E. DeVor Anil K. Srivastava Jon Iverson 《Journal of Manufacturing Processes》2012,14(4):452-459
Tool life has been a vital issue in machining titanium alloys. Recently, an atomization-based cutting fluid (ACF) application has been found to be an effective approach for cooling and lubrication in micromachining operations. In this study, an ACF spray system is developed for macro-scale turning of Ti–6Al–4V. The spray system is designed to minimize interaction between the fluid droplets, and the gas nozzle to control the divergence of the fluid droplets. Experiments are conducted to study the effect of five specific ACF spray parameters including fluid flow rate, spray distance, impingement angle, and type and pressure level of the droplet carrier gas on cutting forces, tool life, and chip characteristics. It has been observed that the combination of lower pressure (150 psi) air-mixed CO2 with a higher flow rate (20 ml/min) and a larger spray distance (35 mm) produces a significantly longer tool life and broken chips. The results also reveal that the ACF spray system can extend tool life up to 40–50% over flood cooling. 相似文献
10.
Mostakima M. Lubna Khandoker S. Salem Mamun Sarker Mubarak A. Khan 《Journal of Polymers and the Environment》2018,26(1):83-90
Vinyl acetate (VAc) monomer of different percentage was grafted onto the recycled polyethylene terephthalate (r-PET) films using gamma irradiation. The properties of these modified films were characterized by Fourier transform infrared spectroscopy (FTIR), mechanical properties testing (Tensile strength, Elongation at break), dynamic mechanical analysis (DMA) and thermo-gravimetric analysis (TGA). The Tensile Strength (TS) of the modified PET film increased by 132.25?% to the highest value of 50.12 MPa at 15% VAc monomer concentration at 3 kGy gamma dose, while the elongation at break (EB) decreased by 31.83?%. FTIR was used to investigate the molecular interaction of the modified films. TGA revealed that curve of the modified PET film shifted toward higher temperature region by 95?°C, which is very close to that of PET film made from virgin flakes. The results indicate that modified PET films of better mechanical and thermal properties were successfully prepared using VAc monomer grafting by gamma irradiation technique. 相似文献