全文获取类型
收费全文 | 99篇 |
免费 | 0篇 |
专业分类
安全科学 | 2篇 |
废物处理 | 10篇 |
综合类 | 23篇 |
基础理论 | 11篇 |
污染及防治 | 38篇 |
评价与监测 | 6篇 |
社会与环境 | 8篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 2篇 |
2021年 | 2篇 |
2019年 | 1篇 |
2014年 | 2篇 |
2013年 | 13篇 |
2012年 | 9篇 |
2011年 | 5篇 |
2010年 | 4篇 |
2009年 | 5篇 |
2008年 | 5篇 |
2007年 | 8篇 |
2006年 | 5篇 |
2005年 | 3篇 |
2003年 | 6篇 |
2002年 | 7篇 |
2001年 | 4篇 |
2000年 | 2篇 |
1999年 | 2篇 |
1998年 | 1篇 |
1996年 | 1篇 |
1989年 | 3篇 |
1988年 | 1篇 |
1983年 | 1篇 |
1981年 | 1篇 |
1967年 | 1篇 |
1964年 | 1篇 |
1956年 | 1篇 |
1954年 | 3篇 |
排序方式: 共有99条查询结果,搜索用时 46 毫秒
1.
Mizukami-Murata Satomi Suzuki Yuji Sakurai Kensuke Yamashita Hiromasa 《Environmental science and pollution research international》2021,28(47):66901-66913
Environmental Science and Pollution Research - Nylon powders are a type of microplastic (MP) used in personal care products such as cosmetics and sunscreens. To determine the effects of nylon... 相似文献
2.
Fiji is expected to come under increasing pressure and risk from various threats resulting from climate change and sea-level
rise (SLR). Fiji consists of 332 islands and thus has a predominant and large coastline. Viti Levu is the largest and most
important of the islands, harboring Fiji’s capital city and most of the major towns concentrated around its coast. The objectives
of this study were to evaluate the extent of possible sea-level rise using GIS, and to identify high-risk locations. Potential
sea level rise was shown graphically as an output to determine where inundation or flooding would take place. This analysis
allowed important areas facing risk to be highlighted for future action. Flooding/inundation can be classified into two kinds:
‘permanent inundation’, which is the result of sea-level rise with tide; and ‘temporary flooding’, also including occasional
storm surge events. The inundated area was displayed under different projections and quantified. The results produced output
maps showing the distribution of inundation/flooding around the island of Viti Levu as well as the extent of flooding. Six
scenarios for sea-level rise were used (0.09, 0.18, 0.48, 0.50, 0.59, 0.88 m). Six scenarios for storm surge were used with
return intervals of 1, 2, 5, 10, 25, 50 years. High risk and priority locations are identified as Fiji’s capital Suva, the
major tourist center and arrival port of Nadi, and Fiji’s second city Lautoka. Future action, adaptation and response strategies
in these identified locations must occur to reduce risk from climate change. 相似文献
3.
4.
5.
6.
Yuya Takuwa Tadao Matsumoto Kazuyuki Oshita Masaki Takaoka Shinsuke Morisawa Nobuo Takeda 《Journal of Material Cycles and Waste Management》2009,11(4):305-311
Because landfill gas (LFG) contains an abundance of methane, the utilization of LFG as a renewable energy source is becoming
popular in many countries. LFG, however, contains various trace constituents, some of which may pose problems during utilization.
For example, siloxanes and halogenated volatile organic compounds (VOCs) can cause difficulties when present in the fuel of
gas engines. In addition, many VOCs and mercury have harmful effects on human health, especially on the health of workers
at landfill sites and people living near the landfills. Energy recovery from LFG is expected to make great progress in the
near future, particularly in Asia, but we found little information on the trace constituents of LFG in this region. Therefore,
we sought to characterize the trace components in LFG generated in two landfill sites in China and one site in Japan, to determine
the typical concentrations of these trace components in LFG, and to compare their concentrations among landfill sites in Asia.
We concluded that the trace components in LFG at the sites studied were mainly siloxanes generated from sewage sludge and
harmful benzene, toluene, ethylbenzene, and xylene compounds from petroleum products. 相似文献
7.
Hideto Yoshida Kazuaki Takahashi Nobuo Takeda Shin-ichi Sakai 《Journal of Material Cycles and Waste Management》2009,11(3):229-243
We summarize the measures taken by the Japanese government to prevent the emission of dioxins and polychlorinated biphenyls
(PCBs) into the environment. Because incineration is the main method of waste management in Japan, reducing the amount of
dioxins emitted from waste incinerators is an essential aspect of proper waste treatment. Intensive measures to prevent the
formation of dioxins at the source have been implemented, with a focus on waste treatment methods and improving comprehensive
management. The efforts have been very successful, with a 95% reduction in the amount of dioxins emitted between 1997 and
2003. The toxicity of PCBs has been monitored with keen interest since the Yusho incident. Unfortunately, treatment facilities
for PCB wastes were not built until long after PCBs had been removed from use, and PCB wastes remained in storage in an untreated
state. The Japanese government has promoted the construction of facilities for treating PCB wastes, and five such facilities
have commenced operations. To more completely eradicate dioxins, a future challenge will be to reduce the amount of PCB-derived
dioxins, which are persistent in the environment and have a long exposure pathway from the environment media to the organism
and the human body. 相似文献
8.
Semiquantitative color profiling of soils over a land degradation gradient in Sakaerat, Thailand 总被引:1,自引:0,他引:1
Ryoichi Doi Chongrak Wachrinrat Sakhan Teejuntuk Katsutoshi Sakurai Pongsak Sahunalu 《Environmental monitoring and assessment》2010,162(1-4):301-309
In this study, we attempted multivariate color profiling of soils over a land degradation gradient represented by dry evergreen forest (original vegetation), dry deciduous forest (moderately disturbed by fire), and bare ground (severely degraded) in Sakaerat, Thailand. The soils were sampled in a dry-to-wet seasonal transition. Values of the red–green–blue (RGB), cyan–magenta–yellow–key black (CMYK), L*a*b*, and hue–intensity–saturation (HIS) color models were determined using the digital software Adobe PhotoshopTM. Land degradation produced significant variations (p?0.05) in R, C, Y, L*, a*, b*, S, and I values (p?0.05). The seasonal transition produced significant variations (p?0.05) in R, G, B, C, M, K, L*, b*, and I values. In discriminating the soils, the color models did not differ in discriminatory power, while discriminatory power was affected by seasonal changes. Most color variation patterns had nonlinear relationships with the intensity of the land degradation gradient, due to effects of fire that darkened the deciduous forest soil, masking the nature of the soil as the intermediate between the evergreen forest and the bare ground soils. Taking these findings into account, the utilization of color profiling of soils in land conservation and rehabilitation is discussed. 相似文献
9.
To mitigate global warming caused by burning fossil fuels, a renewable energy source available in large quantity is urgently required. We are proposing large-scale photobiological H(2) production by mariculture-raised cyanobacteria where the microbes capture part of the huge amount of solar energy received on earth's surface and use water as the source of electrons to reduce protons. The H(2) production system is based on photosynthetic and nitrogenase activities of cyanobacteria, using uptake hydrogenase mutants that can accumulate H(2) for extended periods even in the presence of evolved O(2). This review summarizes our efforts to improve the rate of photobiological H(2) production through genetic engineering. The challenges yet to be overcome to further increase the conversion efficiency of solar energy to H(2) also are discussed. 相似文献
10.
It is easy to get lost in the vast amount of knowledge that is currently produced. In this study, to get a comprehensive picture
of current scientific knowledge about global warming issues, we developed a mapping framework for global warming research
based on the relationships between nature and human society. The mapping includes seven phases: (1) socioeconomic activity
and greenhouse gas emissions, (2) carbon cycle and carbon concentration, (3) climate change and global warming, (4) impacts
on ecosystems and human society, (5) adaptation, (6) mitigation, and (7) social systems. We applied the findings of the Intergovernmental Panel on Climate Change Fourth Assessment Report to the mapping. The quantity of research results and their reliability were analyzed on the basis of expert judgment to better
understand the extent to which current scientific knowledge provides answers to society’s major concerns. The quantity and
reliability of answers have increased in phases 2 and 3 relative to research in the Third Assessment Report. Although a large quantity of results have been produced in phases 4 and 6, they are not always sufficient. More studies
are required in phases 1, 5, and 7, and the reliability of existing knowledge needs to be improved in these phases. Mapping
global warming issues enabled us to visually comprehend the numerous and varied parts of global warming research as a whole
and to discern gaps in knowledge and other research shortfalls.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. 相似文献