Ye Yaxin, Jin Jin, Wang Wenjing, Xu Yu     

叶亚新  金琎  王文菁  徐钰 《中国农学通报》2005,21(4):168-168

研究Nacl浓度与小麦幼苗生长分裂的关系及对小麦幼苗的遗传损伤。实验结果表明：小麦幼苗生长在含NaCl的介质中，其幼苗生长被抑制，根尖细胞有丝分裂指数下降,幼苗的分裂指数、遗传损伤与盐浓度间有一定的线性关系。结果显示：有丝分裂指数与处理浓度间呈负相关。这表明：NaCl浓度高或作用时间延长时对小麦细胞具有遗传学毒性，小麦幼根细胞有丝分裂指数可以作为监测环境中NaCl含量的定量指标。  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   

Biocompatibility of Acellular Porcine Dermis     

SU Ai-hu  WANG Yuan-liang  TANG Li-ling  PAN Jun  LUO Yan-fengstry of Education  College of Bioengineering  Chongqing University  Chongqing  Chin 《保鲜与加工》2004,(2):99-101

In vitro cultured vascular endothelial cells (VEC) and mouse 3T3 fibroblasts (3T3) on the acellular dermal matrix , which were made of porcine skins. We made the cell proliferation test with MTT assay and the histological observation after cells were seeded on the acelluar dermis for 1 week with histological section. The cell growth curves showed VEC and 3T3 grew much rapidly on the acelluar dermis.The histological observation revealed VEC had formed a monolayer, some places even had formed 2 to 3 layer. The results suggest that the acelluar porcine dermal matrix have good biocompatibility , it will be widely applied.  相似文献   

CALCULATION OF ULTIMATE STRESS OF UNBONDED PRESTRESSED TENDONS IN UNSYMMETRICAL DEFLECTED BEAMS     

Pan Li Institute of Building Structures  China Academy of Building Research 《保鲜与加工》1989,(3)

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Structure-activity Relationship of Flavonoids Antioxidants     

LIU Jie  WANG Bo-chu  PENG Liang  ZHANG Guang-qiunistry of Education  College of Bioengineering  Chongqing University  Chongqing  Chin 《保鲜与加工》2004,(2):120-124

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Experimental Study on the Deformation Characteristics of Fine-Sandstone Under the Loading and Unloading Conditions     

XU Jiang  WANG Wei-zhong  YANG Xiu-gui  WANG Hongl Disaster Control Engineering Under the State Ministry of Education  Chongqing University  Chongqing  Chin 《保鲜与加工》2004,(12):60-62

The deformation characteristics of the fine-sandstone is studied under the loading and unloading conditions at the three different deformation-rates and the two different stress-levels. The experimental results show that there is really the plastic-loop in the deformation curve for the loading deformation curve is different from the unloading deformation curve. But the plastic-loop is nearly unchangeable since the second circulate loading. The residual-deformation is be almost zero since the second circulate loading, and that the slope of the deformation curve increases as the deformation-rate increases, and that the residual-deformation increases as the stress-levels increases.  相似文献   

Design and Application of a New Elliptical Crystal Spectrometer     

GAO Jie  ZHONG Xian-xin  XIAO Sha-li  XIONG Xian-caieMinistry of Education  Chongqing University  Chongqing  Chin 《保鲜与加工》2004,(5):5-8

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A NEWFANGLED NORMATIVE FORM FOR SINGLE EIGENVALUE SYSTEMS     

Wang Jifeng Dept.of Mechanical  Electrical Engineering 《保鲜与加工》1992,(1)

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PROBABILISTIC EVALUATION FOR STEEL FRAME COLUMNS OF TALL BUILDINGS     

Dai Guoxin  Li Jihu  Xia Zhengzhong Dept.of Civil Engineering 《保鲜与加工》1992,(2)

Based on properties of parameters and test data of dom-estic steel,this paper analyses the reliability and partial coefficient forresistance of steel frame columns of tall builings.The result may serveas a scientific basis.It is not only for domestic steel instead of importedsteel in building tall steel structures,but also for compiling concerendstandards.  相似文献   

Study on DAQ System by Using LabVIEW     

YANG Zhong-ren  RAO Cheng  ZOU Jian  PENG Zhen-liane Ministry of Education  Chongqing  Chin 《保鲜与加工》2004,(2):32-35

Dong village is very valuable for research work because of its special regional and national character and rich cultural implication. In this paper, some information about the location, form and features of Dong village is given. Then, the relationship between the culture and the settlement is analyzed, which provides a clue for understanding Dong village and will be beneficial to creating modern human settlements.  相似文献