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Noveiri Monireh Jahani Sayyad Kordrostami Sohrab Amirteimoori Alireza 《Environment, Development and Sustainability》2022,24(1):238-270
Environment, Development and Sustainability - The majority of data envelopment analysis (DEA) research studies evaluate the sustainability of processes with real-valued factors and individual role,... 相似文献
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This study was carried out to explore the possibility of making cement-bonded composite building products using eucalypt (Eucalyptus camaldulensis) and poplar (Populus deltoides). The experimental design consisted of three treatments—mixture of fibrous materials, cement and calcium chloride (CaCl2) contents. Some physical properties, vis. water absorption (WA) and thickness swelling (TS), were investigated. The ratio
of woodwool : cement was 40:60 and 60:40 by weight. Results showed that, water uptake increased with increasing woodwool content.
In addition, boards fully made with poplar woodwools had superior properties compared to the eucalypt and mixed woodwools.
The presence of eucalypt woodwools in mixture of fibrous materials typically resulted in increase in TS and WA. It is interesting
to note that a dose of 5% of CaCl2 by weight of cement can enhance the effect of cement. Application of Duncan’s Multiple Range Test for the mean values of
the results showed that the effects of all variables and their interactions on the mechanical properties in terms of TS and
WA were highly significant. 相似文献
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Alireza Ebrahimi Mokhtar Arami Hajir Bahrami Elmira Pajootan 《Environmental Modeling and Assessment》2013,18(6):661-670
This research studied the application of fish bone as a low-cost adsorbent for the removal of two basic dyes (C.I. Basic Blue 41 and C.I. Basic Yellow 28) from textile wastewaters. The surface morphology and functional groups of the fish bone was studied by scanning electron microscopy and Fourier transform infrared, respectively. The experiments were designed in two methods: classical method and response surface methodology (RSM). The effect of operating parameters including pH, initial dye concentration, adsorbent dosage, and inorganic salts was investigated by both methods. The optimum conditions to satisfy 75 % of dye removal for both dyes were predicted by RSM method and the results were very close to the experimental values. So, it was concluded that the fish bone can be used as a low-cost adsorbent for dye removal from effluents. 相似文献
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Seyyed Alireza Mousavi Iraj Shahbazi Rastegar Veysinejad Ali Asgar Sobhani Mehdi Bakhti 《中国人口.资源与环境(英文版)》2017,15(4):351-356
In this study, the volume and the cash value of water loss, and reduction of water loss as a result of enforcement action during 2011–2013 in the drinking water network of villages in Kermanshah Province, Iran, have been investigated. Date collected by referring to the different parts of rural water and waste water company of Kermanshah Province and checklist were completed. The study showed the volume of produced water and sold water has increased and the water loss percentage has decreased. High cost of water production compared to revenue of sold water and water loss resulted in significant detriments in terms of the water production costs. Water loss level decreased from 33% to 30% as result of measures taken to reduce water loss but, it is still 15% higher than the world average level. Also the reduction in number of water resources and increase in the number and volume of reservoirs indicates a lack of water and a growing need. As result of high water loss, waste of costs in the contrast of water production cost and also because physical water loss accounts for most of the water loss of villages, necessary measures can be effective in reducing loss and have economic justification. 相似文献
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Masoumeh Najibzadeh Amahad Gharzi Nasrullah Rastegar-Pouyani Eskandar Rastegar-Pouyani Alireza Pesarakloo 《Russian Journal of Ecology》2017,48(3):280-286
Modeling the distribution patterns of species is a generally efficient tool to assess their ecological characteristics. In this study, we compared ecological niche factor analysis (ENFA) and maximum entropy (Maxent) techniques to predict the most suitable distribution range of Rana macrocnemis. The Maxent model predicted potential suitable habitats for R. macrocnemis with high success rates (AUC Training data = 0.877 ± 0.039). According to the map constructed, three important variables had high contribution to species presence: temperature (50.4%), land cover (24.6%) and elevation (14.4%) variables. The ENFA results were relatively similar to Maxent jackknife analysis. The results implied that R. macrocnemis prefers grassland and needle leaf deciduous forest with high elevations, and low temperature. 相似文献