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71.
Willingness to Pay for Improving the Residential Waste Disposal System in Korea: A Choice Experiment Study 总被引:1,自引:0,他引:1
This study attempts to apply choice experiments with regard to the residential waste disposal system (RWDS) in Korea by considering
various attributes that are related to RWDS. Using data from a survey conducted on 492 households, the empirical analysis
yields estimates of the willingness to pay for a clean food-waste collection facility, the collection of small items (such
as obsolete mobile phones and add-ons for personal computers), and a more convenient large waste disposal system. The estimation
results of multinomial logit models are quite similar to those of nested logit models. The results reveal that residents have
preferences for the cleanliness of facilities and the collection of small items. In Korea, residents are required to purchase
and attach stickers for the disposal of large items; they want to be able to obtain stickers at not only village offices but
also supermarkets. On the other hand, the frequency of waste collection is not a significant factor in the choice of the improved
waste management program.
相似文献
Seung-Hoon YooEmail: |
72.
Han Il Yoo Keunje Kang Bo Ram No Jee Hyun Wee Gui Nam Khan Muhammad Imran Jeong Tae Young Lee Tae Kwon 《Environmental geochemistry and health》2018,40(1):451-460
Environmental Geochemistry and Health - Improper decisions concerning animal carcass disposal sites pose grave threats to environmental biosecurity. However, only a few studies have focused on the... 相似文献
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Yoo JS Cheun BS Park IS Song YC Seo Y Kim NG Shin HW Lee JH 《Journal of environmental biology / Academy of Environmental Biology, India》2004,25(4):431-436
A highly sensitive sodium (Na+) transfer tissue biosensor (STTB) was designed using a frog bladder membrane to measure paralytic shellfish poisons (PSP). The STTB consists, of a Na+ electrode covered by the membrane, which was then integrated into a flow-through system for continuous measurements. In the absence of Na+ channel blocker, active transfer of Na+ occurred from inside to outside across the frog membrane. When the STTB was used to measure the Na+ -dependent dissociation of PSP, it was able to detect PSB at a level contained in a single cell. However, 5 fg or higher (100 cells or more) is needed for accurate and reproducible measurements. The toxicity obtained by the STTB was significantly correlated (r = 0.9449) to that determined by the HPLC. Therefore, the simple method of the STTB can be used not only to detect a low level PSP in toxic plankton populations, but also to monitor poisons in shellfish. 相似文献
75.
Park IS Lee SJ Kim CH Yoo C Lee YH 《Journal of the Air & Waste Management Association (1995)》2004,54(6):695-710
Urban-scale air pollutants for sulfur dioxide, nitrogen dioxide, particulate matter with aerodynamic diameter > or = 10 microm, and ozone (O3) were simulated over the Seoul metropolitan area, Korea, during the period of July 2-11, 2002, and their predicting capabilities were discussed. The Air Pollution Model (TAPM) and the highly disaggregated anthropogenic and the biogenic gridded emissions (1 km x 1 km) recently prepared by the Korean Ministry of Environment were applied. Wind fields with observational nudging in the prognostic meteorological model TAPM are optionally adopted to comparatively examine the meteorological impact on the prediction capabilities of urban-scale air pollutants. The result shows that the simulated concentrations of secondary air pollutant largely agree with observed levels with an index of agreement (IOA) of >0.6, whereas IOAs of approximately 0.4 are found for most primary pollutants in the major cities, reflecting the quality of emission data in the urban area. The observationally nudged wind fields with higher IOAs have little effect on the prediction for both primary and secondary air pollutants, implying that the detailed wind field does not consistently improve the urban air pollution model performance if emissions are not well specified. However, the robust highest concentrations are better described toward observations by imposing observational nudging, suggesting the importance of wind fields for the predictions of extreme concentrations such as robust highest concentrations, maximum levels, and >90th percentiles of concentrations for both primary and secondary urban-scale air pollutants. 相似文献
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79.
Effect of Crystalline and Amorphous Structures on Biodegradability of Poly(Tetramethylene Succinate)
The effect of orientation in the amorphous and crystalline regions on the biodegradability of PTMS [poly(tetramethylene succinate)] was studied using the amorphous orientation function, birefringence, and crystallinity. The crystalline and amorphous intrinsic lateral sonic moduli, E
t,c
0
and E
t,am
0
, were 2.61 × 103 and 0.41 × 103 MPa, respectively. Using the data on birefringence, crystalline and amorphous orientation function (f
and f
am), crystallinity, and sonic modulus of the oriented PTMS fibers, the intrinsic birefringence of the crystalline (
c
0
) and amorphous (
am
0
) regions were evaluated to be 0.0561 and 0.0634, respectively. The biodegradabilities of oriented PTMS films were reduced as the elongation increased, i.e., the amorphous orientation increased. At low elongation (100 and 150%), however, biodegradabilities remained unchanged when the degradation test was performed in activated sludge, which was attributed to the amorphous orientation occurring even at 100% elongation, though the amorphous orientation direction was perpendicular to the fiber axis. 相似文献
80.
The quasi-option value (QOV) literature originated by Arrow et al. (Arrow, K.J., Fisher, A.C., 1974. Environmental preservation, uncertainty, and irreversibility. Quarterly Journal of Economics 88, 312-319) and by Henry (Henry, C., 1974. Option values in the economics of irreplaceable assets. Review of Economic Studies 41, 89-104) is largely concerned with the analysis of two-period models of land development. Our paper extends this literature by analyzing two scenarios in which the decision to develop land is made in a multi-period and stochastic framework. In the first scenario, the development decision is indivisible. In contrast, in the second scenario, the development decision is divisible. Specifically, we study the properties of the indivisible development decision when there is a time constraint on when land is to be developed. We then analyze the ways in which the divisible land development decision depends on the extent of a landowner's landholding and on the number of development opportunities awaiting this landowner. 相似文献