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861.
Sarker Aniruddha Islam Tofazzal Rahman Shahinoor Nandi Rakhi Kim Jang-Eok 《Environmental science and pollution research international》2021,28(39):54448-54465
Environmental Science and Pollution Research - The uncertain fate and transport pathways of applied pesticides are the key hidden threats with respect to the safety and quality evaluation of... 相似文献
862.
Huy Lai Nguyen Oanh Nguyen Thi Kim Phuc Nguyen Hong Nhung Chu Phuong 《Environmental science and pollution research international》2021,28(9):10678-10695
Environmental Science and Pollution Research - Local questionnaire surveys were conducted to collect representative activity data for calculation of annual emissions from residential combustion in... 相似文献
863.
864.
865.
Development of clean technology in alcohol fermentation industry 总被引:1,自引:0,他引:1
Jae-Sok Kim Byung-Gee Kim Chung-Hak Lee Sang-Won Kim Hae-Sung Jee Jong-Ho Koh A.G. Fane 《Journal of Cleaner Production》1997,5(4):263-267
A zero-discharge system for the alcohol fermentation industry was developed by recycling distillery waste (stillage). Stillage was able to be recycled as cooking water for the next fermentation after treating it with appropriate separation processes. Ultrafiltration with a ceramic membrane played a key role in the separation processes. When the permeate from the ultrafiltration of stillage was recycled to the cooking step, the total fermentation time was prolonged from 60 to 70–80 h, but the average ethanol production yield (8.8%) was similar to that in the conventional process (9.0%). In contrast, direct recycle of stillage without membrane filtration showed negative effects on both fermentation time and alcohol yield as recycling was repeated. This new process was confirmed to have stable operation over eight recycles. This new clean technology for the ethanol production industry makes it possible to eliminate the stillage treatment steps using the conventional biological treatment processes such as anaerobic digestion and activated sludge steps currently being operated in industry. 相似文献
866.
Fine particle (aerodynamic diameter <2.5 microm) samples were collected during six intensive measurement periods from November 2001 to August 2003 at Gosan, Jeju Island, Korea, which is one of the representative background sites in East Asia. Chemical composition of these aerosol samples including major ion components, trace elements, organic and elemental carbon (OC and EC), and particulate polycyclic aromatic hydrocarbons (PAHs) were analyzed to study the impact of long-range transport of anthropogenic aerosol. Aerosol chemical composition data were then analyzed using the positive matrix factorization (PMF) technique in order to identify the possible sources and estimate their contribution to particulate matter mass. Fourteen sources were then resolved including soil dust, fresh sea salt, transformed natural source, ammonium sulfate, ammonium nitrate, secondary organic carbon, diesel vehicle, gasoline vehicle, fuel oil combustion, biomass burning, coal combustion, municipal incineration, metallurgical emission source, and volcanic emission. The PMF analysis results of source contributions showed that the natural sources including soil dust, fresh and aged sea salt, and volcanic emission contributed to about 20% of the measured PM(2.5) mass. Other primary anthropogenic sources such as diesel and gasoline vehicle, coal and fuel oil combustion, biomass burning, municipal incineration, metallurgical source contributed about 34% of PM(2.5) mass. Especially, the secondary aerosol mainly involved with sulfate, nitrate, ammonium, and organic carbon contributed to about 39% of the PM(2.5) mass. 相似文献
867.
Formaldehyde (HCHO) is toxic to the human body and is one of the main threats to the indoor air quality (IAQ). As such, the removal of HCHO is imperative to improving the IAQ, whereby the most useful method to effectively remove HCHO at room temperature is catalytic oxidation. This review discusses catalysts for HCHO room-temperature oxidation, which are categorized according to their preparation methods, i.e., gas-phase reduction and liquid-phase reduction methods. The HCHO oxidation performances, structural features, and reaction mechanisms of the different catalysts are discussed, and directions for future research on catalytic oxidation are reviewed. 相似文献
868.
Sulfur deposition simulations over China, Japan, and Korea: a model intercomparison study for abating sulfur emission 总被引:1,自引:1,他引:0
Cheol-Hee Kim Lim-Seok Chang Fan Meng Mizuo Kajino Hiromasa Ueda Yuanhang Zhang Hye-Young Son Jong-Jae Lee Youjiang He Jun Xu Keiichi Sato Tatsuya Sakurai Zhiwei Han Lei Duan Jeong-Soo Kim Suk-Jo Lee Chang-Keun Song Soo-Jin Ban Shang-Gyoo Shim Young Sunwoo Tae-Young Lee 《Environmental science and pollution research international》2012,19(9):4073-4089
In response to increasing trends in sulfur deposition in Northeast Asia, three countries in the region (China, Japan, and Korea) agreed to devise abatement strategies. The concepts of critical loads and source?Creceptor (S?CR) relationships provide guidance for formulating such strategies. Based on the Long-range Transboundary Air Pollutants in Northeast Asia (LTP) project, this study analyzes sulfur deposition data in order to optimize acidic loads over the three countries. The three groups involved in this study carried out a full year (2002) of sulfur deposition modeling over the geographic region spanning the three countries, using three air quality models: MM5-CMAQ, MM5-RAQM, and RAMS-CADM, employed by Chinese, Japanese, and Korean modeling groups, respectively. Each model employed its own meteorological numerical model and model parameters. Only the emission rates for SO2 and NOx obtained from the LTP project were the common parameter used in the three models. Three models revealed some bias from dry to wet deposition, particularly the latter because of the bias in annual precipitation. This finding points to the need for further sensitivity tests of the wet removal rates in association with underlying cloud?Cprecipitation physics and parameterizations. Despite this bias, the annual total (dry plus wet) sulfur deposition predicted by the models were surprisingly very similar. The ensemble average annual total deposition was 7,203.6?±?370 kt S with a minimal mean fractional error (MFE) of 8.95?±?5.24?% and a pattern correlation (PC) of 0.89?C0.93 between the models. This exercise revealed that despite rather poor error scores in comparison with observations, these consistent total deposition values across the three models, based on LTP group's input data assumptions, suggest a plausible S?CR relationship that can be applied to the next task of designing cost-effective emission abatement strategies. 相似文献
869.
Lee Hyun-Kyu Choi Jung-Weon Kim Jin-Hee Kim Cho-Rong Choi Sang-June 《Environmental science and pollution research international》2021,28(31):42014-42023
Environmental Science and Pollution Research - Composite beads consisting of Ca alginate mixed with zinc ferrocyanide (ZnFC) and Cyanex 272 were synthesized in order to selectively adsorb Cs+ and... 相似文献
870.
Environmental Geochemistry and Health - Although particulate matter (PM) is composed of various chemicals, investigations regarding the toxicity that results from mixing the substances in PM are... 相似文献