全文获取类型
收费全文 | 92篇 |
免费 | 0篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 1篇 |
废物处理 | 5篇 |
环保管理 | 5篇 |
综合类 | 11篇 |
基础理论 | 37篇 |
污染及防治 | 34篇 |
社会与环境 | 1篇 |
出版年
2023年 | 1篇 |
2021年 | 2篇 |
2018年 | 2篇 |
2017年 | 1篇 |
2015年 | 1篇 |
2014年 | 6篇 |
2013年 | 5篇 |
2012年 | 2篇 |
2011年 | 1篇 |
2010年 | 2篇 |
2008年 | 1篇 |
2007年 | 4篇 |
2006年 | 3篇 |
2005年 | 4篇 |
2004年 | 4篇 |
2003年 | 2篇 |
2002年 | 2篇 |
2001年 | 4篇 |
2000年 | 4篇 |
1999年 | 2篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1995年 | 1篇 |
1993年 | 1篇 |
1992年 | 3篇 |
1990年 | 1篇 |
1989年 | 4篇 |
1987年 | 2篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1982年 | 4篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1978年 | 2篇 |
1977年 | 4篇 |
1976年 | 2篇 |
1975年 | 2篇 |
1974年 | 1篇 |
1967年 | 1篇 |
1964年 | 1篇 |
排序方式: 共有94条查询结果,搜索用时 347 毫秒
1.
Laboratory observations on spawning,fecundity and early development of a mesopelagic ostracod,Conchoecia pseudodiscophora,from the Japan Sea 总被引:1,自引:0,他引:1
T. Ikeda 《Marine Biology》1992,113(2):313-318
The fate of the polycyclic aromatic hydrocarbon [3H]benzo[a]pyrene (BaP) was examined in two species of scleractinian corals, Favia fragum (Esper) and Montastrea annularis (Ellis and Solander), which were collected in the patch reefs surrounding Alina's Reef (25°23.25N; 80°09.8W) in Biscayne National Park, Florida, USA, in July, 1990. Corals were exposed to initial concentrations of 5 g/l in a simple static system for 25 h. BaP uptake was estimated from the disappearance of BaP from the water. Uptake rates were 6.5±0.7 and 10.8±0.2 g BaP cm-2h-1 for F. fragum and M. annularis, respectively, at initial BaP concentrations and were directly proportional to the concentration of BaP in the water. The separation of zooxanthellae from coral tissue revealed that zooxanthellae can accumulate up to 53 and 64% of the total BaP-derived radioactivity present in F. fragum and M. annularis, respectively. Both corals metabolized BaP slowly, as most of the accumulated radioactivity was present as the unmetabolized chemical. However, aqueous and organic-soluble metabolites were found in both the animal and zooxanthellae fractions. Analysis by high-performance liquid chromatography (HPLC) revealed that both species of corals metabolized BaP to various tetrols, triols, dihydrodiols, quinones and phenols, although the pattern of metabolites differed between species. Zooxanthellae contained some of the same Phase I metabolites found in the animal tissue; however, tetrols and triols were absent in extracts from the zooxanthellae. The elimination of BAP from corals was also slow; approximately 38 and 65% of the accumulated radioactivity was still present in F. fragum and M. annularis, respectively, 144 h following the transfer of exposed corals to an uncontaminated flow-through seawater system. 相似文献
2.
3.
Yukihiro Ikeda 《Journal of the Air & Waste Management Association (1995)》2017,67(2):139-143
A questionnaire survey was conducted to determine the current status of home medical care (HMC) waste collection by nurses for individual items and whether the collection rate differs with city size. The questionnaire was mailed to 1,022 nursing offices, of which 645 offices provided valid responses. Offices were classified into three groups according to the local population size. Responses indicated that used syringes and needles, except for pen-type self-injection needles, were collected by >50% of HMC nurses. On the other hand, enteral nutrients, nutritional adjustment diet vessels, feeding tubes, portable injectors, ventilator masks, endotracheal suction catheters, tracheal cannulas, continuous ambulatory peritoneal dialysis (CAPD) bags, and urinary catheters and bags had a low collection rate in comparison with syringes or needles. The collection percentage of used syringes, needles, and infusion needles (p < 0.05) and that for infusion bags, tubes, and catheters (p < 0.001) differed among the three population groups. Although municipalities are responsible for collect all HMC waste, sharp or infectious items should be collected by HMC doctors or nurses. On the contrary, nonhazardous HMC waste should be collected by municipalities.
Implications: This paper illustrates the status of waste collection of individual home medical care (HMC) items by HMC nurses. Infectious waste, such as needles and syringes, is collected by nurses. The collection rate of infectious waste by nurses in large cities was low compared with that in small cities. Although municipalities are responsible for collecting all HMC waste, sharp or infectious items should be collected by HMC doctors or nurses, whereas nonhazardous HMC waste should be collected by the municipalities. 相似文献
4.
Virtually all animal conflicts occur over access to mates or resources that affect survival, the two key components of fitness.
In this paper, we report that predation risk and mate defense jointly affect the outcomes of contests between male sand crabs
(Scopimera globosa) for burrows in which crabs mate and take shelter from predators. We observed the contests under three different conditions:
(1) the natural condition of low predation risk and without the presence of a female; (2) the first experiment in which we
imposed upon only intruding males the perception of predation risk—by digging them from their burrows, capturing and handling
them, and placing them into other males’ burrows—to increase the value of the burrows for the intruders as shelter, and (3)
the second experiment in which we repeated this treatment but increased the resource value of the burrow to the resident by
placing a female in his burrow. The difference in body size between contestants was the main determinant of victory in all
analyses. However, perceived predation risk also partly affected the outcomes of the fights: The motivated intruders were
likely to win even when they were a little smaller than the residents. In addition, defense of a female had a significant
effect on the outcomes of fights: The motivated residents won more fights than the motivated intruders, indicating that these
two treatments caused asymmetric increases of the resource value. This is the first report of two external factors simultaneously
raising resource value, affecting motivation of contestants, and altering the outcome of fights. 相似文献
5.
Kei Asada Koki Toyota Taku Nishimura Jun-Ichi Ikeda Kaneaki Hori 《Journal of environmental science and health. Part. B》2013,48(4):285-292
Applying manure compost not only results in zinc accumulation in the soil but also causes an increase in zinc mobility and enhances zinc leaching. In this study, the physical and chemical characteristics of zinc, zinc profiles, and zinc balance were investigated to characterise the fate of zinc in fields where the quality and amount of pig manure compost applied have been known for 13 years. Moreover, we determined zinc fractionation in both 0.1 mol L?1HCl-soluble (mobile) and -insoluble (immobile) fractions. Adsorption of zinc in the soil was enhanced with increasing total carbon content following the application of pig manure compost. The 159.6 mg ha?1 year?1manure applied plot (triplicate) exceeded the Japanese regulatory level after only 6 years of applying pig manure compost, whereas the 53.2 mg ha?1 year?1 manure applied plot (standard) reached the regulatory level after 13 years. The zinc loads in the plots were 17.0 and 5.6 kg ha?1 year?1, respectively. However, 5.9 % and 17.2 % of the zinc loaded in the standard and the triplicate pig manure compost applied plots, respectively, were estimated to be lost from the plough layer. Based on the vertical distribution of mobile and immobile zinc content, a higher rate of applied manure compost caused an increase in the mobile zinc fraction to a depth of 40 cm. Although the adsorption capacity of zinc was enhanced following the application of pig manure compost, a greater amount of mobile zinc could move downward through the manure amended soil than through non manure-amended soil. 相似文献
6.
Nobuhisa Watanabe Saburo Inoue Hisao Ito 《Journal of Material Cycles and Waste Management》1999,1(1):38-47
The arsenic and antimony balance in two municipal waste incinerators was investigated. Initially, the production rates of
ash and wet scrubber effluent were estimated. Then the arsenic and antimony in the ash and wet scrubber effluent were determined,
which gave an estimate of the elemental balance. The total amounts of arsenic and antimony in the municipal waste were 0.9 g/t
and 30–44 g/t, respectively. The distributions to fly ash were 45–47% and 33–74% for arsenic and antimony, respectively. The
distribution mechanisms of arsenic and antimony are discussed from the viewpoints of their thermodynamics as well as their
initial valencies, which greatly affect their behaviour.
Received: July 2, 1998 / Accepted: February 27, 1999 相似文献
7.
8.
9.
Historical and geographical aspects of the increasing perfluorooctanoate and perfluorooctane sulfonate contamination in human serum in Japan 总被引:1,自引:0,他引:1
Harada K Koizumi A Saito N Inoue K Yoshinaga T Date C Fujii S Hachiya N Hirosawa I Koda S Kusaka Y Murata K Omae K Shimbo S Takenaka K Takeshita T Todoriki H Wada Y Watanabe T Ikeda M 《Chemosphere》2007,66(2):293-301
Perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) have recently received attention due to their widespread contamination in the environment, as well as in wildlife and humans. We measured the PFOS and PFOA concentrations in historically recorded human serum samples at an age range between 20 and 59 years collected in Kyoto, 20 persons per each time point (n=100), and also the PFOS and PFOA concentrations in human serum samples at an age range between 20 and 59 years from 10 locations throughout Japan (n=200). The historical samples collected from 1983 to 1999 demonstrated that the PFOA concentrations in males and females from Kyoto have increased 4.4-fold and 4.3-fold at a rate of increase of 0.49 ng/ml/year and 0.42 ng/ml/year, respectively. In contrast, serum concentrations of PFOS reached a plateau in the late 1980s. There are also regional differences in both the PFOS and PFOA serum concentrations. The concentrations in serum [geometric mean (geometric standard deviation)] (ng/ml) in 2003-2004 ranged from 7.6(1.6) in the town of Matsuoka in Fukui prefecture to 27.8(1.6) in Kyoto city, and ranged from 2.3(1.5) in Matsuoka to 14.5(1.3) in Osaka city for PFOS and PFOA, respectively. 相似文献
10.