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The ultrasonographer may be the first physician to suggest the presence of a fetal abnormality. A case of prenatally-detected meconium peritonitis is presented, with sonographic and radio-graphic correlation. 相似文献
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Ram Ranjan 《Mitigation and Adaptation Strategies for Global Change》2008,13(4):401-418
This paper explores the role of risk perceptions in influencing public policy related to global warming. It solves for the
optimal paths for emissions, abatement and investment in pollution-eliminating research by incorporating perceived risks into
public decision making. It also compares the impact of differential risk perceptions on international collaboration on carbon
abatement. Key findings are that the perception of risks related to environmental damages and technological breakthroughs
plays an important role in determining the level of mitigation efforts. A high level of perceived risk of environmental damages
discourages investment in pollution-eliminating research as there are few benefits from eliminating pollution after damages
are realized. Other options that allow for sequestering carbon from the atmosphere may still remain viable. Another key finding
is that when it comes to effort sharing between nations, differential mitigation efforts are primarily caused due to the differences
in abatement technology, benefits from emissions and research capabilities. However, such differences could be accentuated
or mitigated depending upon the differences in risk perception of developed and developing countries. 相似文献
138.
The relative sensitivity of tannery effluent before and after treatment was compared by employing Nostoc muscorum and microtox assay in laboratory. The effect on chlorophyll, protein and biomass content of Nostoc muscorum was studied with the luminescent property inhibition of Photobacterium phosphorium and compared with algal bioassay. The results of microtox assay after 5, 15 and 30 min of exposure were compared with data obtained from algal bioassay. It was observed that the luminescent property of Photobacterium phosphorium in microtox assay as well as the chlorophyll content of Nostoc muscorum in algal assay were the most sensitive parameters in toxicity evaluation of tannery effluent. The microtox assay produced notably comparable EC50 values with that of algal bioassay. The microtox assay of toxicity showed that EC50 (%) in 30 min was 3.19 and 63.49 for untreated and treated tannery effluent, respectively while in algal bioassay the EC50 for chlorophyll was in between 0-2.5% and 100%, respectively, in untreated and treated effluent. More than 60% reduction of toxicity was noted in treated tannery effluent in both test system. 相似文献
139.
Srivastava Tapendra Kumar Singh Pushpa Verma Ram Ratan 《Environment, Development and Sustainability》2022,24(3):3588-3618
Environment, Development and Sustainability - Weather variability over the long run exhibits the trends of change in climate and forewarns for development and deployment of adaptation measures.... 相似文献
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Dorian R. Ramírez-Sosa Elba R. Castillo-Borges Roger I. Méndez-Novelo María R. Sauri-Riancho Manuel Barceló-Quintal José M. Marrufo-Gómez 《Waste management (New York, N.Y.)》2013,33(2):390-395
The objective of this study was to identify the organic compounds removed from the leachate when treated with Fenton–Adsorption by gas chromatography coupled to mass spectrometry (GC–MS) in order to identify toxic compounds that could be harmful for the environment or human health.The physicochemical characterization of the raw leachate was carried out before and after the Fenton–Adsorption process. The effluent from each stage of this process was characterized: pH, Biological Oxygen Demand (BOD5), Chemical Oxygen Demand (COD), Total Organic Carbon (TOC), Total Carbon (TC), Inorganic Carbon (IC), Total Solids (TS), Total Suspended Solids (TSS) and Color. The organic compounds were determined by GC–MS.The removal of COD and color reached over 99% in compliance with the Mexican Standard NOM-001-SEMARNAT-1996, which establishes the maximum permissible limits for contaminants present in wastewater discharges to water and national goods. The chromatographic analysis from the Fenton–Adsorption effluent proved that this treatment removed more than 98% of the organic compounds present in the initial sample. The mono (2-ethylhexyl) ester 1,2-benzenedicarboxylic acid persisted, although it is not considered as toxic compound by the NOM-052-SEMARNAT-2005. Therefore, the treated effluent can be safely disposed of into the environment. 相似文献