t Index of period, T Number of periods s Index of supplier, S Number of suppliers f Index of manufacturer, F Number of manufacturers d Index of distributor, D Number of distributor centers g Index of customer group, G Number of customer groups r Index of raw material, R Number of raw materials i Index of products I Number of products.
The optimum extraction conditions were as follows: extraction temperature 91 °C, ratio of water to raw material 14, number of extraction 6, and extraction time 2.1 h.
The effects of extraction temperature, extraction time, the ratio of water to raw material, and number of extraction on extraction yield of crude polysaccharides from the leaves of Malva sylvestris (MSLCP) were optimized by statistical analysis using response surface methodology.
The quantitative effects of extraction time, extraction temperature, ratio of water to raw material and number of extraction on yield of Lycium barbarum polysaccharides were investigated using response surface methodology (RS M.
The optimum extraction conditions, determined by the 3-D response surface and contour plots derived from the mathematical models, were as follows: extraction temperature 94.9 °C, ratio of water to raw material 22, number of extraction 4, and extraction time 2.7 h.
The indexes selected for those factors are as follows: raw material resources (the number of livestock from large farms), economic conditions (local income per person), marketization of technology (the number of local biogas-related companies) and government support (the investment from central to local government for building engineering-scale biogas plants).
Mica and talc have wide areas of application as a raw material in a number of industrial branches.
By solving the regression equation and also by analyzing the response surface contour plots, the optimal polysaccharides extraction conditions were determined: extraction time 5.5 h, extraction temperature 100 °C, ratio of water to raw material 31.2 and number of extraction 5.
Lignocellulosic feedstock represents an extraordinarily large amount of renewable bioresource available in surplus on earth and is a suitable raw material for vast number of applications for human sustainability.
Here, aspartic acid, from the enzymatic conversion of ammonia and fumaric acid (from fermentation), is used as a raw material for a number of chemicals such as 2-amino-1,4-butanediol and amine tetrahydrofuran, which could act as amino analogues of the equivalent C4 compounds.
