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新型水面自扩散农药问世
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《新农村》 2003年第2期33-33,共1页
关键词 水面扩散农药 安徽省农科院绿色食品研究所 研制 专家鉴定 环境保护
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农药新制剂—大粒剂的研究
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作者 吴浩宇 《农药通讯》 2001年第3期14-16,共3页
关键词 农药制剂 大粒剂 种类 水田 水面扩散型 水中扩散
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Improvement of the One-dimensional Vertical Advection-diffusion Model in Seawater
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作者 王保栋 单宝田 +1 位作者 战闰 王修林 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2003年第1期34-39,共6页
The classical 1-D vertical advection-diffusion model was improved in this work. The main advantages of the improved model over the previous one are: 1) The applicable condition of the 1-D model is made clear in the im... The classical 1-D vertical advection-diffusion model was improved in this work. The main advantages of the improved model over the previous one are: 1) The applicable condition of the 1-D model is made clear in the improved model, in that it is substantively applicable only to a vertical domain on which two end-member water masses are mixing. 2) The substitution of parameter f(z) in the equation of the classical 1-D model with end-member fraction f 1z makes the model more precisely and easily solved. 3) All the terms in the improved model equation have specific physical meanings, which makes the model easily understood. Practical application of the improved model to predict the vertical profiles of dissolved oxygen and micronutrients in abyssal ocean water of the North Pacific proved that the improvement of the 1-D advection-diffusion model is successful and practicable. 展开更多
关键词 D advection-diffusion model vertical profile dissolved oxygen NUTRIENT North Pacific
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