全文获取类型
收费全文 | 118篇 |
免费 | 1篇 |
国内免费 | 5篇 |
专业分类
安全科学 | 1篇 |
废物处理 | 23篇 |
环保管理 | 6篇 |
综合类 | 15篇 |
基础理论 | 18篇 |
环境理论 | 3篇 |
污染及防治 | 34篇 |
评价与监测 | 8篇 |
社会与环境 | 13篇 |
灾害及防治 | 3篇 |
出版年
2023年 | 7篇 |
2022年 | 1篇 |
2021年 | 1篇 |
2020年 | 1篇 |
2019年 | 3篇 |
2018年 | 6篇 |
2017年 | 4篇 |
2016年 | 8篇 |
2015年 | 1篇 |
2014年 | 7篇 |
2013年 | 8篇 |
2012年 | 6篇 |
2011年 | 12篇 |
2010年 | 2篇 |
2009年 | 7篇 |
2008年 | 9篇 |
2007年 | 5篇 |
2006年 | 7篇 |
2005年 | 3篇 |
2004年 | 1篇 |
2003年 | 6篇 |
2002年 | 3篇 |
2001年 | 3篇 |
2000年 | 1篇 |
1999年 | 2篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1993年 | 1篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1976年 | 1篇 |
1975年 | 1篇 |
1971年 | 1篇 |
1958年 | 1篇 |
排序方式: 共有124条查询结果,搜索用时 31 毫秒
31.
Ji-Hoon Jeong Masaki Takaoka Hideaki Ichiura Kazuyuki Oshita Takashi Fujimori 《Journal of Material Cycles and Waste Management》2016,18(2):215-221
The quantity of sludge produced by the paper industry in Japan in 2011 was estimated to be 27.91 million tons wet weight. This amount is the third largest among all industrial wastes. To explore ways of reusing recovered paper pulp and safely disposing of the residue, we investigated the distribution of metals in the process of recovery of pulp from two types of paper sludge using an ionic liquid. 32 and 46 % of pulp from paper sludge A and B was recovered using ionic liquid, respectively; the resultant weight reduction of the solid mass was comparable to that of incineration. There were virtually no heavy metals but aluminum in the recovered pulp, which makes its reuse viable at present. The characteristics of the metals in the residues differed according to the treatment used and properties of the paper sludge. Copper accounted for ~10 % in the ionic liquid used for recovery of pulp from the paper sludges. This suggests that [bmIm]Cl has the potential to dissolve a specific amount of copper compared to other metals. 相似文献
32.
Takeuchi Yoshiteru Andriamanohiarisoamanana Fetra J. Yasui Seiichi Iwasaki Masahiro Nishida Takehiro Ihara Ikko Umetsu Kazutaka 《Journal of Material Cycles and Waste Management》2018,20(1):314-322
Journal of Material Cycles and Waste Management - In this feasibility study, the anaerobic co-digestion of different organic wastes obtained from a dairy farming area in Hokkaido prefecture, Japan... 相似文献
33.
Temperature dependence of PCDD/DF and dioxin-like polychlorinated biphenyl (dl-PCB) concentrations in fly ash from a municipal waste incinerator (MWI) heated under vacuum has been investigated as a function of sample temperature ranging from T(s)=425 to 800 K to find out if PCDDs/DFs in fly ash evaporate and are trapped in a liquid nitrogen-cooled trap. The results show that more than 99.98% of PCDDs/DFs in TEQ is removed from fly ash by vacuum heat treatment at T(s)>650 K for 4 h. Almost no PCDDs/DFs were detected in the liquid nitrogen-cooled trap. Homologue distributions indicate that dechlorination/hydrogenation (DCH) reactions proceed in fly ash at T(s)>450 K. Arrhenius rate parameters for the DCH reactions have been determined for each homologue assuming that only DCH reactions occur. The fly ash heated under vacuum at 650 or 800 K was reheated at 573 K (300 degrees C) in a stream of dry or humid air to see how much PCDDs/DFs and dl-PCBs are regenerated. We have found that (1) PCDDs/DFs are regenerated in both 650 K and 800 K treated fly ash, whereas dl-PCBs are regenerated in 650 K treated fly ash, (2) formation of PCDFs predominates over that of PCDDs or dl-PCBs, and (3) less chlorinated homologues are abundant for PCDDs/DFs and dl-PCBs. 相似文献
34.
Temperature-Electrical Conductivity Relation of Water for Environmental Monitoring and Geophysical Data Inversion 总被引:5,自引:0,他引:5
Hayashi M 《Environmental monitoring and assessment》2004,96(1-3):119-128
Electrical conductivity (EC) is widely used for monitoring the mixing of fresh water and saline water, separating stream hydrographs, and geophysical mapping of contaminated groundwater. The measured EC values at various temperatures need to be reported as corresponding to a standard temperature because EC is dependent on temperature. An arbitrary constant is commonly used for temperature compensation assuming that EC-temperature relation is linear (for example 2% increase of EC per 1 degrees C). This paper examines the EC-temperature relation of natural waters having vastly different compositions and salinities. EC-temperature relation was slightly nonlinear in a temperature range 0-30 degrees C, but the linear equation approximated the relation reasonably well. The temperature compensation factor corresponding to 25 degrees C ranged between 0.0175 and 0.0198. When the mean value 0.0187 was used, the error of estimating EC at 25 degrees C from EC at 10 degrees C was less than about 2% for all samples tested. Temperature compensation factors vary substantially depending on the choice of standard temperature. Therefore, a care must be taken when standard temperatures different from 25 degrees C are used. 相似文献
35.
Takahashi Fumitake Sano Akira Yanase Ryuji Matsuyama Akito Takaoka Masaki 《Journal of Material Cycles and Waste Management》2023,25(5):2654-2667
Journal of Material Cycles and Waste Management - Owing to Minamata Convention on mercury, the final disposal of mercury in environmentally safe manners will be required. Mercury disposal in... 相似文献
36.
Agroforestry in the Western Ghats (WG) of peninsular India and satoyama in rural Japan are traditional land-use systems with
similar evolutionary trajectories. Some of their relevance was lost by the middle of the twentieth century, when modern agricultural
technologies and urbanisation engineered shifts in emphasis towards maximising crop production. There has been, however, a
resurgence of interest in traditional land-use systems recently, in view of their ability to provide ecosystem services. Both
agroforestry and satoyama are thought to be harbingers of biological diversity and have the potential to serve as “carbon
forests.” Carbon (C) stock estimates of the sampled homegardens in WG ranged from 16 to 36 Mg ha−1. Satoyama woodlands owing to variations in tree stocking and management conditions indicated widely varying C stocks (2–279 Mg ha−1). Agroforestry and satoyama also differ in nature, complexity, and objectives. While agroforestry involves key productive
and protective functions, and adopts ‘intensive management’, the satoyama woodlands are extensively managed; understorey production
is seldom a consideration. Differences in canopy architecture (multi-tiered structure of agroforestry vs. the more or less
unitary canopy of satoayama) and land ownership pattern (privately owned/managed agroforestry holdings vs. community or local
government or privately owned and mostly abandoned satoyamas) pose other challenges in the transfer and application of knowledge
gained in one system to the other. Nonetheless, lessons learnt from satoyama conservation may be suitable for common pool
resource management elsewhere in Asia, and aspects relating to understorey production in agroforestry may be relevant for
satoyama under certain scenarios. 相似文献
37.
Dioxin concentrations from municipal waste incinerators in Japan and elsewhere often show low concentrations that comply with legal limits (in this paper, the term "dioxin" designates WHO-TEQ: PCDD/Fs+dioxin-like PCB). However, such data is usually generated under normal steady state operational conditions, and there has been little investigation of releases occurring during startup and shutdown. It is important, therefore, to ascertain quantitatively emissions in an unsteady state (startup and shutdown) in order to correctly evaluate the relationship between emissions from a facility and the surrounding environment. The present study aimed to examine dioxin emissions of a continuously operated incinerator at startup and shutdown, and estimating the time period of greatest emission, and the processes causing dioxin generation. The startup process was divided into five stages and the shutdown into two; at each stage, dioxins in the flue gas were measured at the boiler outlet and the stack. From the concentration of dioxins and the flue gas volume at each stage, the amount of dioxins at startup and shutdown were calculated, and these were compared with that under steady state conditions. Dioxin concentration at the stack under steady state conditions was a very low level, while those at startup and shutdown were higher. In the case where dioxin concentration under a steady state is a low level like in this study, it is indicated that the total annual dioxin emission from a facility could be attributed to the startup periods. 相似文献
38.
39.
40.
Sustainability science: building a new discipline 总被引:8,自引:8,他引:0