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461.
Hu-Chen Liu Jian-Xin You Chao Lu Meng-Meng Shan 《Waste management (New York, N.Y.)》2014,34(11):2355-2364
The management of health-care waste (HCW) is a major challenge for municipalities, particularly in the cities of developing countries. Selection of the best treatment technology for HCW can be viewed as a complicated multi-criteria decision making (MCDM) problem which requires consideration of a number of alternatives and conflicting evaluation criteria. Additionally, decision makers often use different linguistic term sets to express their assessments because of their different backgrounds and preferences, some of which may be imprecise, uncertain and incomplete. In response, this paper proposes a modified MULTIMOORA method based on interval 2-tuple linguistic variables (named ITL-MULTIMOORA) for evaluating and selecting HCW treatment technologies. In particular, both subjective and objective importance coefficients of criteria are taken into consideration in the developed approach in order to conduct a more effective analysis. Finally, an empirical case study in Shanghai, the most crowded metropolis of China, is presented to demonstrate the proposed method, and results show that the proposed ITL-MULTIMOORA can solve the HCW treatment technology selection problem effectively under uncertain and incomplete information environment. 相似文献
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Shao Shuai Hu Bifeng Tao Yunhan You Qihao Huang Mingxiang Zhou Lianqing Chen Qiuxiao Shi Zhou 《Environmental geochemistry and health》2022,44(2):579-602
Environmental Geochemistry and Health - The source identification and apportionment of heavy metals (HMs) is a vital issue for restoring contaminated soil. In this study, qualitative approaches [a... 相似文献
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The present study integrates personality approach and social cognition approach to investigate the relationships between risk tolerance, risk perception, hazardous attitude and safety operation behavior in order to understand the mechanisms underlying pilots’ safety operation behavior in aviation. The study sample consisted of 118 commercial airline pilots from China Southern Airlines Ltd. The results show risk tolerance displays an indirect effect on safety operation behavior through influencing hazardous attitude; risk perception has a significant moderating effect on the relationship between risk tolerance and safety operation behavior. Based on the above, it can be concluded that the low risk tolerance primarily influences safety operation behavior indirectly through affecting hazardous attitude. With risk perception increasing, the negative effects of risk tolerance on safety operation behavior are gradually reduced. Practical implications for aviation safety campaigns are also discussed. 相似文献
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Wei‐bin You Dong‐jin He Wei Hong Cui Liu Li‐yun Wu Zhi‐rong Ji Shi‐hong Xiao 《Natural resources forum》2014,38(4):296-307
The perceptions and attitudes of local people in heritage sites strongly influence their behaviour related to protecting heritage resources and improving management. In this study, we collected pertinent data through a questionnaire and group discussions to examine local people's attitudes and perceptions toward participation in heritage protection in Wuyishan Scenery District (WSD). Logistic regression was used to identify the factors that influence local people's perceptions of heritage protection behaviours. The results indicate that education level is the most critical factor in local people's initiatives to protect heritage resources. Local people with higher education levels pay more attention to the status of WSD and behave more positively with regard to conservation. Gender and income are relatively important factors in perceptions of heritage. Males have better knowledge of heritage resources than females do, and inhabitants with higher income levels are more likely to participate in protection, especially after WSD was listed as a World Heritage Site. Education level was always a key demographic factor before and after WSD's listing on the Heritage List. Household size was a significant factor before WSD was listed on the Heritage List, but it was not significant after, when household income became a significant factor. 相似文献
468.
Effects of ZnO nanoparticles on perfluorooctane sulfonate induced thyroid-disrupting on zebrafish larvae 总被引:1,自引:0,他引:1
Perfluorooctane sulfonate(PFOS) and ZnO nanoparticles(nano-ZnO) are widely distributed in the environment.However,the potential toxicity of co-exposure to PFOS and nano-ZnO remains to be fully elucidated.The test investigated the effects of co-exposure to PFOS and nano-ZnO on the hypothalamic–pituitary–thyroid(HPT) axis in zebrafish.Zebrafish embryos were exposed to a combination of PFOS(0.2,0.4,0.8 mg/L) and nano-ZnO(50 mg/L)from their early stages of life(0–14 days).The whole-body content of TH and the expression of genes and proteins related to the HPT axis were analyzed.The co-exposure decreased the body length and increased the malformation rates compared with exposure to PFOS alone.Co-exposure also increased the triiodothyronine(T3) levels,whereas the thyroxine(T4)content remained unchanged.Compared with the exposure to PFOS alone,exposure to both PFOS(0.8 mg/L) and nano-ZnO(50 mg/L) significantly up-regulated the expression of corticotropin-releasing factor,sodium/iodidesymporter,iodothyronine deiodinases and thyroid receptors and significantly down-regulated the expression of thyroid-stimulating hormone,thyroglobulin(TG),transthyretin(TTR) and thyroid receptors.The protein expression levels of TG and TTR were also significantly down-regulated in the co-exposure groups.In addition,the expression of the thyroid peroxidase gene was unchanged in all groups.The results demonstrated that PFOS and nano-ZnO co-exposure could cause more serious thyroid-disrupting effects in zebrafish than exposure to PFOS alone.Our results also provide insight into the mechanism of disruption of the thyroid status by PFOS and nano-ZnO. 相似文献
469.
Environment, Development and Sustainability - Improving the livability and sustainability of the dense urban environments in the old town of cities has been a focus of attention in urban planning,... 相似文献
470.
Xiao-yan Qu Zhen-shan Li Xin-yuan Xie Yu-mei Sui Lei Yang You Chen 《Waste management (New York, N.Y.)》2009,29(10):2618-2624
It is recognized that information on both quantity and composition of residential waste is important for the effective planning of household waste handling infrastructure. In this paper, we present the results of a survey on household waste generation and composition in Beijing, China. Sample communities were selected by the integration of five indices including family population, income, age, and education. Wastes were sampled on a daily basis from 113 households in six different districts of Beijing City for ten days. The results showed that the generation rate of household wastes was 0.23 kg/pers/day. The bulk density was approximately 221 kg/m3, and the moisture content was approximately 50%. Household waste consisted of kitchen waste, paper/cardboard, plastics, textiles, metals, glass and other wastes, the proportion of each waste was approximately 69.3%, 10.3%, 9.8%, 1.3%, 0.8%, 0.6% and 2.7%, respectively. An evaluation of the relationship between daily per capita generation of household waste and socio-economic factors indicated that household size and income both showed a negative relationship with household waste generation (kg/pers/day). As for the effect of education, families with a secondary educational level produced fewer household wastes (kg/pers/day) than those with a primary or advanced educational level. 相似文献