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Tsuyoshi Noma Katsuki Ide Jun Yoshikawa Kazutaka Kojo Hiroshi Matsui Ryo Nakajima Kiyoshi Imai 《Journal of Material Cycles and Waste Management》2012,14(3):153-161
To achieve both high-efficiency power generation and high detoxification performance, advanced-type waste power generation plants such as pyrolysis and gas reforming plants are suggested. Further surveys on actual operational data of these plants are required in terms of reliability of the system when it is introduced to waste disposal sites. To verify the technical effectiveness of advanced-type waste power generation using the pyrolysis and gas reforming method, we evaluated 10?tons/day of municipal solid wastes (MSW) treated in a demonstration plant. A demonstration test was conducted over 100?days including 35?consecutive days of operation treating MSWs. The test results show high recycling performance and harmless nature of the plant which proves it to be an excellent waste recycling system. Major test results are as follows: (1) stabilization of waste treatment is possible with the wastes of various qualities, (2) clean gas is produced from the waste whose energy recovery ratio is approximately 40?%. (3) 99.3?% weight % of dried waste are recovered as valuable materials such as clean gas, char and metal, (4) total amount of dioxin emission to the outside of the plant is very small, down to 0.0051–0.018?μg?TEQ per ton waste. 相似文献
34.
Mochizuki M Hondo R Kumon K Sasaki R Matsuba H Ueda F 《Environmental monitoring and assessment》2002,73(3):229-235
Cadmium (Cd) is an environmental pollutant that has serioustoxicity in humans and animals and causes Itai-Itai disease.However, there is little available information on itscontamination in wildlife as an indicator of environmentalpollution. The Cd contents in the kidney and liver of 85 wildbirds from 9 different prefectures in Japan were investigated.The ranges of the Cd contents in the kidney and liver in allbirds were ND-174.4 and ND-21.2 g g-1 dry wt.,respectively. The mean Cd contents were higher in theoil-contaminated birds than those in the non-contaminated ones.Furthermore, a strong correlation was obtained only between theCd contents in the kidney and those in the liver of theoil-contaminated seabirds and not in the other non-contaminatedones. These results suggest that wild birds reflect the levelof environmental contamination which should be monitored. 相似文献
35.
Shinsuke Tanabe Narayanan Kannan Tadaaki Wakimoto Ryo Tatsukawa Taku Okamoto Yoshito Masuda 《毒物与环境化学》2013,95(4):215-231
In the light of new discoveries on the extremely toxic non‐ortho coplanar 3,3’,4,4'‐tetra‐ (T4CB), 3,3’,4,4’,5‐penta‐(P5CB) and 3,3'4,4’,5,5'‐hexachlorobiphenyl (H6CB) and their mono‐ and di‐ortho analogs, tissue samples of a Yusho poisoning victim and Yusho causal oils were subjected to a thorough congener/isomer‐specific investigation for polychlorinated biphenyls (PCBs), polychlorinated dibenzofurans (PCDFs), polychlorinated dibenzo‐p‐dioxins (PCDDs). Among the many PCB congeners detected in Yusho oil, non‐ortho coplanar T4CB constituted 3.1%, P5CB‐0.17% and H6CB‐0.0072% in total PCBs. Their concentrations in liver and adipose tissue were 130–700 (T4CB), 54–720 (P5CB) and 50–380 (H6CB) pg/g on wet weight basis. The observed concentrations in adipose tissue were two to four fold higher than that detected in unexposed individuals. Among the PCDFs identified, toxic 2,3,7,8‐substituted isomers including 2,3,4,7,8‐P5CDF were the dominant ones. Tetra‐ through hepta‐CDDs were detected in the oil, whereas octa‐CDD was the dominant isomer in the patient. A comparison with KC‐400 revealed enrichment of coplanar PCBs in Yusho oil along with toxic PCDFs. Enrichment was highest for 3,3'4,4'5,5'‐H6CB followed by 3,3’,4,4'5‐P5CB. A comparative toxic evaluation of these chemical groups in Yusho patient's adipose tissue based on “2,3,7,8‐T4CDD Toxic Equivalent Analysis” revealed accountable toxic contribution from coplanar PCBs. This analysis also confirmed that 2,3,4,7,8‐P5CDF was the principal causative agent in Yusho poisoning. 相似文献
36.
The degree of cadmium (Cd) contamination in wildlife is often used as an indicator in the environmental monitoring of Cd poisoning.
However, previous studies have not clarified the correlation between levels in wildlife and levels in the environment by comparing
levels among different species of animals; therefore, assessing the level of pollution in this manner is not considered a
reliably accurate indicator of levels in the environment. The aim of this study was to establish a new indicator for the non-polluted
warm-blooded animals, one that is not species-dependent, which will facilitate using different species for Cd monitoring.
First, the previous publications regarding Cd contents in wildlife, 27 reports in which Cd contents were represented as arithmetic
means and described for both kidney and liver were selected. A regression line (CSRL) between Cd contents of kidney and that
of liver was obtained in a high correlation coefficient (R
2 = 0.943, P < 0.01). The mean values from land and waterfowl, terrestrial mammals, seabirds, marine mammals, and non-polluted humans
were located on the line and aligned in order. CSRL might allow an accurate determination of whether an animal is polluted
by Cd. CSRL was confirmed using well-established and widely recognized pollution models such as Itai-itai patients and Cd-exposed
experimental animals. The Cd contents from these models were located in different positions relative to CSRL depending on
the level of contamination. Thus, this new indicator determining the Cd-pollution status of animals would be useful for environmental
monitoring. 相似文献
37.
Nilawati Dewi Matsuura Norihisa Honda Ryo Hara-Yamamura Hiroe Sintawardani Neni Yamamoto-Ikemoto Ryoko 《Journal of Material Cycles and Waste Management》2021,23(2):537-547
Journal of Material Cycles and Waste Management - Wastewater generated during acid coagulation in tofu processing has high organic concentrations and low pH. Several small industries in Indonesia... 相似文献
38.
A survey on characteristics of leachate pond in an offshore municipal solid waste disposal site 总被引:1,自引:0,他引:1
Shogo Sakita Jun Nishimoto Kazuyuki Nishimura 《Journal of Material Cycles and Waste Management》2016,18(2):348-355
Leachate from a landfill is collected and flowed in leachate accumulation pond, and sent to treatment facility. However, leachate in the pond can be a source of complaints from residents due to off coloration or odor, particularly near heavily populated urban areas. In this study, for the purpose of appropriate control of leachate pond, pond water and sediment were sampled in an offshore municipal solid waste disposal site 2 years after the disposal site was closed, and analyzed some parameters to estimate their properties. The pond water had high alkalinity due to the disposal of incineration residues, and EC and CODMn were also high. On the other hand, Cr, Mn, Fe, Cu, Zn, Cd, and Pb did not exceed the Japanese effluent water standards. Total sulfide was detected from all sediment samples during the sampling period, and values in the summer were slightly higher than at other times. To investigate the stabilization of targeted disposal site, the relationships among cumulative liquid/solid ratio (L/S) with pH and Cl? elution after closing the site were examined. Both parameters showed a direct relationship with cumulative L/S ratio, which can be anticipated to continue increasing in the future. 相似文献
39.
The future of the environment in China until the year 2050 has been forecasted through a heuristic approach. A questionnaire survey was given to a group of Japanese experts concerning 47 selected indices, including past data and reference data about other countries. The indices were related to aspects of the economy, population, food, energy, transportation, and the environment. The experts were requested to plot a graph for each index up to 2050 based on their intuition. The lines drawn by 60 experts were compiled along with their comments, and the characteristics of each index were analyzed. Different values for the indices regarding transportation and per capita GDP were forecasted by the experts, while rather similar values were obtained for those referencing population and food consumption. The respective fields of the experts were found to affect their perspectives on the future. Economists tended to show rather optimistic views, expressing a business-as-usual scenario, while engineers predicted limited growth but technological innovation. 相似文献
40.