نتایج جستجو برای: raw material and energy
تعداد نتایج: 16975784 فیلتر نتایج به سال:
In this work ultrafine single phase SrFe12019 powders were prepared using SrCc) and FeCI) as raw material. The materials were then milled in high energy mills for 0.5 to 24 hours. The powders were then calcined between 700 and 1000 °C for 0.5 h with different heating rates. The calcined powders were then washed with deionized water for several times, to remove undesired stontium chloride...
some new water-soluble schiff base complexes of na2[m(5-so3-1,2-salophen)].nh2o; (5-so3-1,2-salophen = n,n’-bis(5-sulphosalicyliden)-1,2-phenylendiamine); na2[m(5-so3-2,3-salpyr)(h2o)n].2h2o; (5-so3-2,3-salpyr = n,n’-bis(5-sulphosalicyliden)-2,3-diaminopyridine); and na2[m(5-so3-3,4-salbenz)(h2o)n].nh2o; (5-so3-3,4-salbenz = n,n’-bis(5-sulphosalicyliden)-3,4-diaminobenzophenon); where m = cu, n...
the moe and mor are controlled by production variables of particleboard process. now, the basic question is which of the particleboard variables is effective on bending strength property? 13 variables of internal scientific resources were measured with 100 repeats. the study steps include the following; liner regression or stepwise, genetic algorithm, and artificial neural network. the number o...
the determination of effective indicators in order to decide on the location of industrial units with the aim of optimizing the use of raw material, reduce costs and waste and marketing of products is very important. determining the effective indicators in optimal choice for seating block board unites (with use the back of scrap plywood, twigs little low diameter wood’s) in country was target o...
The majority of contemporary insulation materials commonly used in the building industry is made from non-renewable raw materials; furthermore, their production often brings high energy costs. A long-term trend as far as sustainable development is concerned has been the reduction of energy and material demands of building material production. One of the solutions is the possibility of using eas...
Mobility plays a large role in generating the patterns of stone raw-material usage seen in forager archaeological sites, but how best to translate these patterns into a complete quantitative characterization of the organization of forager mobility remains a difficult problem. The number of potential variables involved, including raw-material quality and abundance as well as individual movement ...
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