土质边坡稳定安全系数影响因素的     

邹沐  段亚辉 《中国农村水利水电》2006,(6):73-75

土质边坡稳定安全系数的计算值主要与采用的简化计算方法和土工参数有关。采用正交试验法计算分析了不同的计算方法、材料参数、水位及其相关荷载、地震作用等对边坡安全系数计算值的影响，进而对设计中的计算方法和材料参数提出了一些有益的建议，并提出了在工程运行管理中应尽量避免低水位或水位骤降情况的意见，为土石坝类工程的设计与运行管理提供了重要参考。  相似文献   

Biodegradation of Linear Alkyl Benzene Sulphonate     

XIANG Li-jun  WANG Bo-chu  DUAN Chuan-ren  LIU Liu  WANG Qing-hongnistry of Education  College of Bioengineering  Chongqing University  Chongqing  Chin 《保鲜与加工》2004,(10):71-74

The paper researches on the degradation of LAS (Linear Alkyl benzene Sulphonate) by combining AS1.860 immobilized with low intensity ultrasonic irradiation. The paper also discusses the influence of pH, rotary velocity, LAS concentration and the condition of low intensity ultrasonic irradiation on the degradation of LAS, the degradation rate of LAS is the main index of our experiment, the results of orthogonal test shows that low ultrasonic irradiation can increase the metabolizing of microorganism cells and facilitate the biodegradation of immobilized cells to LAS, here we research the degradation condition of 50mg/L LAS simulation wastewater with low ultrasonic irradiation, and the results show that the influence is obvious, the optimization degradation rate is about 83%, nine point five percent higher than that of the immobilized cells without ultrasonic irradiation.  相似文献   

New Progression about Gravity Quantization in General Relativity Theory in Real Space-time     

DUAN Shao guang 《保鲜与加工》2002,(1):109-112

Professor Venzo de Sabbata,working at World Laboratory,Lausanne,Switzerland,and Department of Physics,University of Bologna and Ferrara,Italy,is a famous Italy Physicist in the world.He is engaged with a series of creating research works about gravity quantization of General Relativity Theory in the real space-time which attract the attentions of the world.This paper pays the attention to introduce the works of this field,containing mainly:1.quantizing the general relativity theory in the sense of Einstem-Cartan theory,i.e., general relativity adds the torsion,which means introducing spin into the theory of gravity.2. building a compact mathematical tool for research of gravity quantization,the geometric algebra in the real space-time--multivector algebra,i.e.,developing a spinor manifold in the real space-time.  相似文献   

Mechanical Signalling in Plant: Perception and Transduction Pathway     

ZHOU Jing  WANG Bo-chu  DUAN Chuan-ren  ZHU Li-qing 《保鲜与加工》2006,(3):112-115

The metabolism and development of plants are controlled through interplay between genetic and environmental cues.For optimal growth plants require the ability to coordinate complex developmental processes and at the same time sense and respond to environmental stimuli.The responses can be divided into three main events: stimulus perception,generation and transmission of a signal,and subsequent changes in downstream biochemical processes.Because of space limitation this review does not provide an exhaustive account of plant signal transduction.Rather,the authors intention is to cover new and important results in this field,including the mechanochemical transform mediated by integrin and integrin-like protein,the change of membrane fluidity respond to stimulus,and the wide accepted transduction pathway of calcium signaling system.The research emphasis and tendency are prospected.  相似文献   

Study on Optimum Design of Rectangular Sedimentation Tanks     

CAI Jin-bang~  ZHU Liang~  DUAN Xiang-bao~ 《保鲜与加工》2005,(6):67-70

In this paper,the flow velocity fields,suspended solids concentration fields and flow-through curves in rectangular sedimentation tanks with different reaction baffles location,inlet horizontal velocity and length height ratio are simulated in detail using a developed mathematical model given in Reference 2.According to the numerical results,the influence of different reaction baffles location,inlet horizontal velocity and length height ratio on the operating efficiency is analyzed.Finally,the rational reaction baffles location,inlet horizontal velocity and length height ratio are presented.  相似文献   

Application of Multivector Algebra in Real Space-time to Set Pair Analysis     

DUAN Shao-guang 《保鲜与加工》2004,(11):66-70

The contact number is an important mathematical tool of systems theory and methods in the monograph Set Pair Analysis and Its Preliminary Applications written by Zhao Keqin for unitizedly processing the uncertainties due to the fuzzy, stochastic, intermediate and information uncomplete about something. The article applies the multivector algebra which is isomorphism with the real Dirac algebra in the real space-time adopted by Venzo de Sabbata to the contact number of set pair analysis, and consequently, the contact number is generalized correspondingly.  相似文献   

Tissue Culture and Rapid Propagation of Actinidia chinensis     

YANG Xiao cheng  WANG Bo chu  YE Zhi yi  DUAN Chuan ren  CHE Xiao yan 《保鲜与加工》2002,(6):75-77

It has been briefly studied and reported that Actinidia chinensis , one of economic woody plants, has been bred with the method of plant tissue culture. Aim at the shortage of traditional plant tissue culture ways which ignored the refinement and transplant of test-tube seedling, it strengthen the study to breeding and management of Actinidia chinensis seedlings before they grow up and become mature seedlings. Through our explore, the transplant survive rate of tissue-culture seedlings attain to about 85%.This study is the improvement to traditional breeding seedling means and it is helpful to the rapid propagation of those economic woody plants.  相似文献   

Tissue Culture and Rapid Propagation of Echinacea Purpurea     

WANG Bo-chu  LIU Wan-qian  DUAN Chuan-ren 《保鲜与加工》2005,(5):120-122

It is a burgeoning application field for the biotechnology that to apply the technique of plant tissue culture breed seedling. The authors study the responses of Echinacea purpurea to different proportion plant growth hormone or auxin through adopting the culture tissue technique on the MS. The integrated seedling of Echinacea purpurea can be cultivated by callus, subculture, differentiation and rhizogenesis. The surviving rate of Echinacea purpurea seedling transplant are improved by appropriate sound stimulation appropriate. Study harvest offers the gist for the large-scale breeding seedling and the officinal resource exploitation of Echinacea purpurea in our country, and avoid some traditional handicap in breeding seedling of Echinacea purpurea, such as the difficult of seed collection, low burgeoning rate, and the disadvantage for large-scale propagation.  相似文献   

Methods and Techniques to Enhance the Production of Secondary Metabolites in Hairy Roots     

ZHANG Guang-qiu  WANG Bo-chu  DUAN Chuan-ren  HU Kai 《保鲜与加工》2005,(6):121-124142

Hairy roots culture is a new means to gain the plant secondary metabolites. How to enhance the production of secondary metabolites in hairy roots becomes a new hotspot recently. The authors summarize recent trends and results about the increase of the production of secondary metabolites in medicinal plant hairy roots. The change of culture conditions and the application of biotechnologies can enhance the production of secondary metabolites in hairy roots.  相似文献   

Converse Illation Method on Optimal Control of Reheating Furnace     

DUAN Ying  LIN Tao  DUAN Wen-ze 《保鲜与加工》2007,(8):21-25

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