一株线虫寄生菌的鉴定及其在不同农产品培养基上的培养效果比较     

张晓林  谢明  张艳军  彭德良  尉文彬 《北方园艺》2016,(22):131-135

以一株粉红粘帚霉(Clonostachys rosea)CAYU-3菌株为试材,采用平板培养的评价方法,研究了该菌株在6种农产品(大豆、大米、玉米、小麦、马铃薯、花生)培养基(去渣或留渣)以及PDA培养基上的菌落生长和产孢情况。结果表明:该菌株在不同农产品培养基上的菌丝生长和菌落形态存在较大的差异。无论培养基是否留渣,在大豆、花生培养基上,该菌株的菌丝生长紧密,菌丝量多,而在玉米、大米、小麦培养基中菌丝疏松,菌丝量少,整体生长状况较差。在产孢方面,该菌株在不同的农产品培养基上产孢量存在显著差异。去渣处理对该菌株产孢量有显著影响。在去渣培养基中,花生培养基的产孢量最高(1.79×107个孢子·cm-2);在留渣培养基中,大豆培养基的产孢量最高(2.87×107个孢子·cm-2)。由此看来,大豆和花生培养基较适合该菌株的产孢。试验结果还表明,大米培养基对该菌株的产孢不是很有利,无论去渣与否,大米培养基的产孢量均较低(0.24×107~0.32×107个孢子·cm-2)。  相似文献   

解读广州市住区环境规划与建设     

彭璐  韦松林 《安徽农业科学》2007,35(27):8556-8557

在大力发展住区建设的同时,广州结合当地独特的地理气候特征和人文历史积淀,创造了一批高质量的安康住区。通过对新建居住小区环境建设的分析,指出当前居住小区环境建设中的问题,提出住区环境规划建设与生态结合的发展方向。  相似文献   

巴氏奶行业抢“鲜”研究     

彭伊伶  周丰婕 《中国乳业》2023,(3):15-19

在新消费升级的背景下,人们越来越注重消费品质量和感受,乳制品消费的新鲜化和休闲化是新消费时代的发展趋势。营养鲜活、口感轻柔的巴氏奶,在我国乳制品液态奶品类中成为新的消费增长点,各大乳品企业纷纷加码低温赛道抢占市场。本文基于大量的文献研究并结合消费市场趋势,从而确定探究新消费下的巴氏奶行业问题。从巴氏奶市场发展现状入手,集合巴氏奶在国家政府部门所发布的各项利好政策为发展背景优势。通过分析巴氏奶在乳品市场中的规模,发现其增速提高和占比增大的发展态势,强劲的增长吸引各大乳品企业争先布局低温市场。为了避免盲目入局,本文继续分析了巴氏奶在目前发展中存在的问题,并对上述巴氏奶发展问题提出了针对性的建议,最后围绕新消费下的特点,重构“人货场”三要素,以期激活消费者的购买力。  相似文献   

A Visco-plastic Model of Magnetorheological Materials     

SI Hu  PENG Xiang-He 《保鲜与加工》2001,(3):45-48

Magnetorheological materials are a class of smart materials whose reological properties may be rapidly varied by application of magnetic field. By a simple mechanical mold, a visco-plastic model for the materials is developed. It is shown that the model can describe the variation of the mechanical properties for the Magnetorheological materials in the different magnetic field. The result is shown that the model can characterize the mechanical properties of Magnetorheological Materials in plastic and viscous variation.  相似文献   

Micromodel of Computer Emulational Simulation on Twin-roll Casting Strip Solidification Structure     

HOU Shi-dong  PENG Xiao-dong  YANG Ming-bo  Pan Fu-sheng 《保鲜与加工》2001,(2):24-27

Based on the research on the solidifiation of twin-roll casting strip,the analytical model and emulational model of nucleation,the growth of dendrity tip and colunar dendrity transformation to equiaxis dendrity (CET)of twin-roll casting strip solidification are established by means of the principle of metal solidification and modern computer emulational technology.The foundation for the emulational simulation of twin-roll casting strip solidification structure is laid.  相似文献   

Advances in Pharmacological Studies of Coptis Chinesis     

YU Yuan-yuan  WANG Bo-chu  PENG Liang  WANG Jing-bo  ZENG Chen 《保鲜与加工》2006,(2):107-111

A Coptis Chinesis is the dry rhizoma of ranunculaceous Coptis Chinesis Franch or Coptis deltoidea C. 7. Cheng et Hisao, or Coptis teeta Wall. It is the traditional Chinese herb, which is used in the contagious diseases. In recent years, its new pharmacological actions have been reported, which are antitumour, hypoglycemic response, immunoloregulation, improving the functions of cardiovascular. The important pharmacological functions of Coptis Chinesis are hypoglycemic response, improving the functions of cardiovascular, antitumour. With the deeply researching of Coptis Chinesis pharmacology, and the continuous founding of pharmacological mechanism, new preparation will be widely applied in the clinic.  相似文献   

Model of Financing Strategy     

FU Qiang  PENG Long-ze  ZHANG Tian-yong 《保鲜与加工》2006,(3):143-146

Considering information asymmetry between inside and outside of the firms,this paper discusses the financing strategy of M&A,and builds a model.According to the model,we can see that the firm with relatively expected low-productivity will choose equity financing for M&A,and the firm with relatively expected high-productivity will choose debt financing for M&A,and the firm with expected medium-productivity will not choose financing from outside.In the case of undeveloped capital market and financing tools in China,the conclusion of the model has some extent significance for helping firms to choose financing strategy for M&A rationally.  相似文献   

Analysis on Micro-structure of TiN Thin Film and Polyimide with AFM     

BAI Hai-hui  YANG Xue-heng  PENG Guang-han 《保鲜与加工》2006,(8):138-140145

The study in molecular morphology is given with a highresolution Atomic Force Microscope AFM.IPC-208B.By taking TiN thim film prepared by magnerton sputtering method and polymide(PI) fibre for examples,the preferenthal growing plme of TiN thin film,the atomic arranges of TiN thin film on the preferential growing plme and the surficial micro-structure can be ascertained form the three-dimensional images obtamed by AFM.IPC-208B.These experiments not only identify small structures of the materials,but also affirm that AFM.IPC-208B holds the precision of atomic level and potential application in micro-structure field,at the same time it establishs the groundwork for the application in micro-process kingdom.  相似文献   

Work-hardening Mechanism of Non-magnetic High Manganese ZG25Mn18Cr4 Castings     

ZHANG Ding-fei  PENG Jian  YANG Jing  ZHANG Li  TANG Chang-fa 《保鲜与加工》2006,(11):78-80100

The important character of non-magnetic high manganese ZG25 Mn18Cr4 alloy is rapid work-hardening under external stress. With X-ray diffraction and TEM analysis, it is proved that the microstructures of both undeformed and deformed matrixes are austenite and carbide with some striation structure in the matrixes, the amount of stripes in the deformed matrix is obviously more than that in the undeformed matrix. Electronic diffraction analysis confirmed that the stripes in coarse austenite grains are high density lamination fault sheets. A great deal of lamination fault sheets produced by plastic deformation divides up austenite matrix, shortens the free distance of dislocation movement and results in the rapid work-hardening of ZG25Mn18Cr4 alloy.  相似文献   

Flow Path Mathematical Modeling of Total Artificial Heart Test System     

ZHENG Xiao-lin  CAO Yong  DENG Xiao-yan  PENG Cheng-lin  LIAO Bin 《保鲜与加工》2007,(10):119-125129

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