Respond of Stock Trading Volume to Earning Report     

FU Yun ying  MENG Wei dong  CUI Di 《保鲜与加工》2002,(11):79-82

Earning report is a main accounting report that transmits earning information to users. It is the core of financial reports system. Earning information is significant to users' decision making. This paper studies the respond of stock trading volume to earning report and draws the curve of trading volume before and after earning report. This paper further does a regression analysis of accidental earning and abnormal return rate, and draws the relation curve of them on the earning report date to prove stock trading volume does have remarkable respond to earning report. This research is significant to either lessen small investors blindness investment and help them make reasonable forecast to markets and regulate the disclosure of listed companies.  相似文献   

Analysis of Radial Forces on the Seal Block in a Compound Gear Pump with 3 Idle Gears     

ZHAO Lian chun  XU Xian liang  SUN Chang jing 《保鲜与加工》2001,(6):45-47

By analyzing the pressure distribution between gears and sealing blocks in compound gear pump with three idlers,the resultant hydraulic forces acting on seal blocks are obtained.The conclusion is the unbalanced resultant hydraulic forces are relatively small in magnitude.In the pump,the inner sealing edges are long and so it s Sealing effect is good,but the outer sealing effect is relatively poor because of its short sealing edges.The little unbalanced force pushes the sealing block to te pumping chamber,therefore it is advantageous to meliorating the pump's sealing effect,thereby to improving it's volumetric efficiency as well.  相似文献   

Analysis on Sustained Release of Protein from Microcapsule Prepared by Alginate     

JIA Yun  DAI Chuan-yun  ZHAO Hong-wei  LIU Huo-an 《保鲜与加工》2005,(10):108-110

The paper studies a drug deliversy system for protein and find the optimum preparation condition.Cross-linked alginate(Alg) microcapsule was used to prepare microcapsule for protein,using bovine serum album(BSA) as a model drug.Effect of different cations and content of protein on configuration,size and enveloped rate of microcapsule were investigated.It is shown that Ba-Alg microcapsule has steady configuration,homogeneous size and high-enveloped rate.Also electrophoresis of native BSA before microencapsulation and after microencapsulation is measured by(SDS-PAGE),it is found that no significant change is observed BSA integrity.Release of BSA from microcapsule in vitro presents sustained release in some extent,and initial burst effect is significantly obvious.Microenpsulation drug in alginate will be a wishful drug delivery system.  相似文献   

Determination of Total Cysteine in Plasma by High Performance Liquid Chromatography and Ultraviolet Detection     

DING Min  HE Jun  YE Lian  CHENG Shu-hui  BAO Hong-yong 《保鲜与加工》2005,(5):116-119

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Spline Boundary Element Method for Calculating Three-Dimensional Electrostatic Fields     

Yun Zhengqing Tan Bangding 《保鲜与加工》1993,(5):79-84

Based on [l].this paper presents a new spline-BEM for calculating 3-D electrostatic fields,in which bi-cubic B-splines are used as basis functions. The corner problem in BEM and the extreme conditions for splines are circumvented. The numerical results presented show that the global approximation .convergence and stability of the method are satisfactory.  相似文献   

Application OF SFRHSC IN Blast-Resistant Engineering     

JIAO Chu-jie  SUN Wei  GAO Pei-zheng  ZHOU Yun 《保鲜与加工》2007,(5):168-172

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The Application of Relevant Homology in the Unified Representation of Electromagnetic Potentials and Gauge Transformation     

Yun Zhengqing  Tan Bangding 《保鲜与加工》1995,(1):45-50

Electromagnetic potentials and gauge transformation are derived for non-cloSedexterior differential forms with the help of relevant homology.Since de Rham ccahomology is sure-ly a relavant homology. potentials for both closed and non-closed forms and the gauge transforma-tion ean be unified in terms of relavent homology.  相似文献   

The Unified Representation of Interface Conditionsof Electromagnetic Quantities Using Exterior Differential Forms     

Yun Zhengqing  Tan Bangding 《保鲜与加工》1994,(3):25-31

A continuity condition of p-forms across a p-dimensional submanifold isderived.The,various interface conditions of electromagnetic quantities are obtained through theapplication of the continuity condition to Minkowski manifold of space-time.  相似文献   

不同品种青贮玉米群体光合性能指标的变化     

张瑞霞  刘景辉  陈友君  朱树国  云丽娜  闫睿卿 《中国农学通报》2007,23(1):208-208

通过对不同青贮玉米品种群体光合性能指标的研究结果表明，不同青贮玉米品种叶面积指数、光合势、群体生长率在整个生育期均呈单峰曲线变化，峰值出现在散粉至乳熟期间，因不同品种而异。净同化率则呈“马鞍”型曲线变化。多分蘖品种科试1号、植株高大品种东陵白与农大647在生育期间叶面积指数和光合势均较高，东陵白生育前、中期群体生长率显著高于其它品种，且高值持续时间较长，这是其生物产量高的生理基础。生产中，采取合理栽培措施，克服此类品种植株高大、个体繁茂、群体郁蔽导致植株病害和倒伏严重的不足，可实现青贮玉米群体生物产量的进一步提高。  相似文献   

微波加热对米糠储藏性能和蛋白质溶解性的影响   总被引：3，自引：0，他引：3  

严梅荣  马云 《粮食储藏》2002,31(6):25-27

研究了微波加热对于米糠5周储藏期间酸值和过氧化值及米糠蛋白溶解性的影响。结果表明，利用微波加热稳定米糠，可以有效降低酸值，防止水解酸败，同时也能降低过氧化值。  相似文献