苏云金芽孢杆菌高效菌株cry基因分析及多价基因组合的研究

对本室筛选的高活性Ｂ．ｔ．野生株进行了ｃｒｙ 基因检测,Ｓｏｕｔｈｅｒｎ杂交证明ｃｒｙＩＡｃ和ｃｒｙ１Ｃ位于质粒上．利用接合转移和电穿孔转化等方法对这些菌株进行了遗传改良研究．结果表明：高效野生株７４０４、ＨＤ－１－Ｘ和９５１０ 不易获得并表达外源ｃｒｙ 基因,而高效野生株Ｂｔｉ． ｔ－１８９７ 的电转化频率较高,并获得以Ｂｔｉｔ－１８９７ 为受体,对甜菜夜蛾、棉铃虫、黏虫和淡色库蚊均有毒力,具有ｃｒｙＩＡｃ、ｃｒｙＩＣ、ｃｒｙＩＶ及ｃｙｔ多价基因的广谱工程菌株．     

中国Btken-Ag cry1Ac杀虫毒素基因核心片段的克隆及核苷酸序列测定

用ＰＣＲ方法,将苏芸金芽孢杆菌肯尼亚亚种Ａｇ菌体（Ｂａｃｉｌｌｕｓ ｔｈｕｒｉｎｇｉｅｎｓｉｓ ｋｅｎｙａｅ Ａｇ,简称Ｂｔｋｅｎ－Ａｇ）编码ｃｒｙ１Ａｃ杀虫毒素蛋白的Ｎ末端（１．８４ｋｂ）的基因片段扩增后,淫ＥｃｏＲⅠ消化成三个不同大小的片段,将原扩增片段及酶切片段分别连接到ｐＣＲ－Ｓｃｒｉｐｔ克隆载体后转化进大肠杆菌,将每一克隆片段进行序列测定,在此基础上又设计出特异引物,再次以ｃｒｙ１Ａｃ的     

一类椭圆型方程Cauchy问题的正则化(英文)

ＲＥＧＵＬＡＲＩＺＡＴＩＯＮＯＦＡＣＡＵＣＨＹＰＲＯＢＬＥＭＦＯＲＡＥＬＬＩＰＴＩＣＥＱＵＡＴＩＯＮ＊ＸｕＤｉｎｇｈｕａ１）ＬｉＭｉｎｇｚｈｏｎｇ２）１）ＤｅｐａｒｔｍｅｎｔｏｆＦｕｎｄａｍｅｎｔａｌＣｏｕｒｓｅｓ,ＥａｓｔＣｈｉｎａＧｅｏｌｏｇｉｃ...     

转Bt棉不同生长期及不同器官杀虫蛋白表达量的免疫？…

转苏云金杆菌（Ｂａｃｉｌｌｕｓ ｔｈｕｒｉｎｇｅｎｓｉｓ）杀虫蛋白基因棉花（下称Ｂｔ棉）在不同生长期及不同器官上对锦铃虫杀虫活性存在明显差异。目前国内普遍使用生物测试法检测Ｂｔ棉对棉铃虫的杀虫活性。但无法定量检测Ｂｔ棉中杀虫蛋白的表达量。本实验室建立的酶联免疫学测定方法（ＥＬＩＳＡ）,可定量检测棉器官内杀虫蛋白的含量。它具有检测周期短,操作简单的优点。用ＥＬＩＳＡ方法检测Ｂｔ棉杀虫蛋白的含量,结果     

t-PA在昆虫细胞中的表达

将含完整阅读框架的人ｔ－ＰＡ（ｔｉｓｓｕｅ－ｙｔｐｅ ｐｌａｓｍｉｎｏｇｅｎ ａｃｔｉｖａｔｏｒ,ｔ－ＰＡ）ｃＤＮＡ克隆至昆虫细胞表达转移载体ｐＢａｃＰＡＫ８中,获得重组质粒ｐＢａｃ－ｔＰＡ。应用脂质体共转染法,将ｐＢａｃ－ｔＰＡ和线性化杆状病毒ＢａｃＰＡＫ６ ＤＮＡ共转染Ｔｎ－５Ｂ－１昆虫细胞。经空斑筛选获得１１株重组病毒。经ＰＣＲ鉴定与生物活性测定,获得一株高效表达ｔ－ＰＡ的重且病毒ＢａｃｔＰ     

全长和截短的δ内毒素cryIAc基因在昆虫杆状病毒表达？…

在昆虫病毒转移载体ｐＶＬ１３９３多角体基因启动子下游克隆了全长的苏芸金杆菌δ内毒素基因ｃｒｙＩＡｃ，得到了重组转移载体ｐＶＬＹ１，用ＫｐｎＩ将ｃｒｙＩＡｃ基因进行了截短，得到了重组转移载体ｐＶＬＹ２。随后在两种重组转移载体ｃｒｙ基因的下游引入了ＩＥ１启动子驱动的ｎｅｏ基因作为筛选标记和ＳＶ４０小ｔ抗原终止区作为ｃｒｙ基因的终止信号，得到了重组转移载体ｐＶＬＹ１ｎｅｏ和ｐＶＬＹ２ｎｅｏ，分别用两种重     

转Bt杀虫蛋白基因植物及其抗虫性研究进展

利用遗传工程技术将苏云金杆菌（Ｂａｃｉｌｌｕｓ ｔｈｕｒｉｎｇｉｅｎｓｉｓ Ｂｅｒｌｉｎｅｒ简称Ｂｔ）杀虫蛋白基因导入植物是近年来的研究热点,本文就Ｂｔ基因的转化及其在植物中的表达与抗虫效果、转Ｂｔ基因植物的产量及品质以及存在的风险与安全性等方面的研究进展作一综述．     

HARMONIC AC SUSCEPTIBILITY FOR TEXTURED YBa_2Cu_3O_7

ＨＡＲＭＯＮＩＣＡＣＳＵＳＣＥＰＴＩＢＩＬＩＴＹＦＯＲＴＥＸＴＵＲＥＤＹＢａ２Ｃｕ３Ｏ７ＧｅＹｏｎｇ１）ＤｉｎｇＳｈｉＹｉｎｇ２）（１）ＤｅｐａｒｔｍｅｎｔｏｆＰｈｙｓｉｃｓ,ＮａｔｉｏｎａｌＬａｂｏｆＳｏｌｉｄＳｔａｔｅＭｉｃｒｏｓｔｒｕｃｔｕｒ...     

RAPID FLUCTUATIONS OF WATER MASER EMISSION IN VY CMa

Ｔｈｅｍｏｎｉｔｏｒｉｎｇｏｂｓｅｒｖａｔｉｏｎｓｏｆｔｈｅｓｈｏｒｔ－ｔｉｍｅｖａｒｉａｔｉｏｎｏｆｔｈｅｗａｔｅｒｍａｓｅｒｔｏｗａｒｄｔｈｅｓｕｐｅｒｇｉａｎｔｓｔａｒｏｆＶＹＣＭａｗｅｒｅｃａｒｒｉｅｄｏｕｔｆｒｏｍＡｕｇｕｓｔ２６ｔｈｒｏｕｇｈＳｅｐｔｅｍｂｅｒ２４１９９３，ｕｓｉｎｇｔｈｅ１３．７ｍｔｅｌｅｓｃｏｐｅａｔｔｈｅＱｉｎｇｈａｉｓｔａｔｉｏｎｏｆｔｈｅＰｕｒｐｌｅｍｏｕｎｔａｉｎＯｂｓｅｒｖａｔｏｒｙ．ＴｈｉｓａｎｔｅｎｎａｐｒｅｓｅｎｔｓａＨＰＢＷｏｆ４．２ａ…     

云南省野生恒河猴病毒血清流行病学研究

对云南省野生恒河猴作了Ｂ病毒（ＢＶ）、猴爱滋病毒（ＳＩＶ）、猴Ｔ细胞白血病毒（ＳＴＬＶ）、猴Ｄ型逆转录病毒（ＳＲＶ）、轮状病毒（ＳＡｌ）、腺病毒（ＳＡＶ）、痘病毒（Ｍｏｎｋｅｙｐｏｘ）、麻疹病毒（Ｍｅａｓｌｅｓ）、柯赛基病毒Ｂ－１型（ＣｏｘｓａｃｋｉｅＢ１）和人巨细胞病毒（ＨＣＭＶ）等１０种病毒血清抗体及乙型肝炎病毒（ＨＢＶ）检测,结果表明,云南省野生恒河猴中,抗体阳性率较高的有ＳＡ１１（９０％）,ＳＡＶ（８３１％）,ＢＶ（４４６％）和Ｍｏｎｋｅｙｐｏｘｖｉｒｕｓ（２０６％）;３种逆转录病毒的抗体阳性率分别为ＳＴＬＶ－１（８８％）,ＳＲＶ（４７％）,ＳＩＶ（２２％）;未发现Ｍｅａｓｌｅｓ,和ＣｏｘｓａｃｋｉｅＢ－１病毒血清抗体及ＨＢＶ感染,但在１只动物血清中有ＨＣＭＶ抗体．病毒抗体阳性率与动物的年龄有关,成年猴明显高于未成年猴．对来自思茅地区、临沧地区和文山州动物的调查表明,Ｂ病毒相关抗体和逆转录病毒抗体阳性率有地区差异,思茅地区的野生恒河猴,抗体阳性率较高．     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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