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蛋鸡用料的计算
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《北方牧业》 2005年第4期20-20,共1页
饲养蛋鸡最大的开支是饲料.现将蛋鸡各个生长时期用料数量介绍如下:
关键词 蛋鸡 用料数量 生长时期 饲养 饲料 开支 计算
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如何计算蛋鸡用料
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作者 李建设 《中国养鸡》 2003年第2期31-31,共1页
关键词 蛋鸡 计算 饲料 生长时期 用料数量
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自配饲料需把“三关”
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作者 官开政 《四川畜牧兽医》 2002年第5期41-41,共1页
关键词 自配饲料 原料质量 用料数量 配粒搅拌
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Comparison on Commercial Application of Two Types of C_8 Aromatics Isomerization Catalysts 被引量:2
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作者 Liu Zhongxun 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2010年第4期13-17,共5页
The results of commercial application of two types of C_8 aromatics isomerization catalysts under different feed conditions were compared to gain an insight in the techno-economical basis for selecting proper technolo... The results of commercial application of two types of C_8 aromatics isomerization catalysts under different feed conditions were compared to gain an insight in the techno-economical basis for selecting proper technological route at the plant.The comparison reveals differences in every aspect of feed consumption,unit capacity,product output,product distribution,and unit process parameters depending upon which catalyst type is adopted by the integrated PX complex.The type of aromatics isomerization catalyst has its influence on the plant scale,the construction cost,the process unit capacity and the product cost,with the magnitude of its impact varying with changing feed conditions. 展开更多
关键词 C8 aromatics ISOMERIZATION CATALYST feed oil
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Effects of mushroom waste on improvement of reclaimed soil qualityin coal mining areas 被引量:3
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作者 Shu-Li GUO Qian LI +2 位作者 Xin-Ju LI Yao-Lun ZHAO Xin-Gang WANG 《Journal of Coal Science & Engineering(China)》 2013年第2期237-242,共6页
Restoring soil quality is the main evaluation norm of the reclamation. In order to reveal the effects of mushroom waste on the quality improvement of reclaimed soil in coal mining areas, the physical, chemical and mic... Restoring soil quality is the main evaluation norm of the reclamation. In order to reveal the effects of mushroom waste on the quality improvement of reclaimed soil in coal mining areas, the physical, chemical and microbial characteristics of soil are studied. The results show clear improvement in the soil after using mushroom waste. Because of human cultivation and fertilization, cultivated soil after reclamation exhibits high comprehensive quality and the index of quality of surface soil reaches 0.64 and 0.73. The average index of surface soil quality is as high as 0.52 and 0.54. In comparison, the quality of reclaimed soil of forest land is low, with average index of 0.40. The effects of mushroom waste are mainly on the surface soil in the first 2 years after the application. After that period, with the decomposition of mushroom waste, soil quality index tends to be the same as the original soil. The quality of surface soil is higher than that of subsoil, especially after the application of mushroom waste, at which point the soil quality reaches a peak at about 15 cm. Cultivated soil after reclamation has great variance in quality, after the coefficient of 24.74%. Mushroom waste can reduce such variation, particularly with long-term use. The variance efficient falls to 3.59% after 3-year application. 展开更多
关键词 land reclamation soil quality mushroom waste mining area
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Gradient estimates for parabolic systems from composite material
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作者 LI HaiGang LI YanYan 《Science China Mathematics》 SCIE CSCD 2017年第11期2011-2052,共42页
In this paper, we derive W^(1,∞) and piecewise C^(1,α) estimates for solutions, and their t-derivatives, of divergence form parabolic systems with coefficients piecewise H¨older continuous in space variables x ... In this paper, we derive W^(1,∞) and piecewise C^(1,α) estimates for solutions, and their t-derivatives, of divergence form parabolic systems with coefficients piecewise H¨older continuous in space variables x and smooth in t. This is an extension to parabolic systems of results of Li and Nirenberg [Comm Pure Appl Math, 2003, 56:892–925] on elliptic systems. These estimates depend on the shape and the size of the surfaces of discontinuity of the coefficients, but are independent of the distance between these surfaces. 展开更多
关键词 gradient estimates parabolic system composite material linear system of elasticity
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