نتایج جستجو برای: waste paper
تعداد نتایج: 1799024 فیلتر نتایج به سال:
The objective of the present work is to investigate the extent and effectiveness of the implementation of optimization methods for the solution of environmental problems. In order to fulfill its objective, the present work reviews a significant number of scientific / research papers dealing with the application of optimization approaches for the solution of environmental problems, in the areas ...
This paper continues the review of gasifier monitoring results by presenting details from units in Vanuatu and in Mail A presentation of all the data in a summarised form is made and the advantages and dangers of installation evaluation based on data in such a form are highlighted. Values, typical of gasifiers in the field, are presented for many of the 19 parameters used in these papers. It is...
MOTIVATION Proper management of fecal sludge has significant positive health and environmental externalities. Most research on managing onsite sanitation so far either simulates the costs of, or the welfare effects from, managing sludge in situ in pit latrines. Thus, designing management strategies for onsite rural sanitation is challenging, because the actual costs of transporting sludge for t...
The hydrolysis rate coefficients of sorted municipal waste were evaluated from the biochemical methane potential tests using non-linear regression. A distributed mathematical model of anaerobic digestion of rich (food) and lean (non-food) solid wastes with greatly different rates of polymer hydrolysis/acidogenesis was developed to describe the balance between the rates of hydrolysis/acidogenesi...
One of the best established empirical results in international economics is that bilateral trade decreases with distance. Although well-known, this result has not been systematically analyzed before. We examine 1467 distance effects estimated in 103 papers. Information collected on each estimate allows us to test hypotheses about the causes of variation in the estimates. Our most interesting fi...
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