丝胶蛋白膜的制备及其物理性能

以环氧树脂作为交联剂制备具有一定力学性能的丝胶蛋白膜。用X-射线衍射法研究丝胶蛋白膜的聚集态结构；对丝胶蛋白膜的热水溶失率和力学性能进行测定；并探讨了交联剂种类、比例对丝胶蛋白膜性能和结构的影响。结果表明，交联剂对丝胶蛋白膜的交联作用明显，引起了丝胶结晶形态的变化；并改善了丝胶蛋白膜的物理性能，交联剂PEGO10加入30％左右所制得的丝胶蛋白膜拉伸断裂强度和断裂伸长率较好。     

蚕丝脱胶工艺条件的探讨

从食用的角度出发，对丝纺工业废丝进行脱胶处理，选择安全、廉价的碳酸氢钠作为脱胶剂，并利用计算机ＳＹＳＴＡＴ软件对脱胶条件进行了优化，得出最佳工艺条件为：碳酸氢钠浓度为０．６％，脱胶温度为８８℃，脱胶时间为３９ｍｉｎ，在此条件下，丝胶脱除率为９９．６％，而丝素未受任何损伤，同时，用凝胶过滤色谱测定了丝胶蛋白的分子量分布，发现丝胶蛋白的分子量较大且分布范围较广，从１５００００至３０００００，位于外层的丝胶蛋白分子量较内层小．     

毛纱用丝胶复配浆料的上浆工艺

以丝胶、明胶和聚丙烯酸甲酯为主浆料,聚丙烯酰胺、二甲基硅油、渗透剂JFC为助剂,采用混合水平均匀设计及正交设计等方法制定实验方案.通过测试浆料的各种性能,最终确定复配浆料中主浆料和助剂的最优配比,然后将其与PVA淀粉混合浆料进行比较实验.结果表明丝胶复配浆料具有良好的上浆性能,满足毛纱上浆对浆料的各项要求.     

Sericin 1上游调控序列多态性分析

在克隆家蚕sericin 1基因上游调控序列时，出现多种扩增情况．为了调查其多态性，对野桑蚕、家蚕70个品系基因组进行了PCR扩增，扩增出660bp（DQ354392）、1000bp及660bp和1000bp同时出现的3种类型,序列分析表明：1000bp的条带与NCBI中登录的sericin 1（AB00783）上游调控序列一样；多态性存在于顺式作用元件之前，而顺式作用元件区域是非常保守的．     

Study on a New Method of Reducing the Water Shrinkage of Rabbit Hair Knitted Fabrics

Introduction Rabbithair,asakindofvaluableanimalfibers,has manygoodpropertiessuchasbulk,whiteness,lightness,smoothandgoodwarmthretentionandsoon.Withthe developmentoftextileindustry,theapplicationofrabbit hairscontinuestoexpandandgainmoreandmoreattentions.Productsofhighpercentrabbithairsseemmoreluxurious.However,thereisalayerofscalesonthesurfaceasother animalfibers,fabricsmadeofrabbithairsoftenshrink afterwashing,whichdecreasesthedimensionalstabilityof fabrics,andmakesdailycaredifficult.Inaddit…     

废蚕丝中提取丝胶工艺研究

通过对透析法、酸析法和冰冻法提取丝胶效果的比较,得出冰冻法是提取丝胶的较好的方法,其最佳的提取条件是：pH=4,-20℃,冰冻时间为13 h,丝胶液浓度为32.8%。     

丝胶树碱（funtumine）的合成

本文研究了以妊烯醇酮为原料，经过催化加氢、Mitsunobu反应、碱解、酸解等步骤，合成丝胶树碱，收率约61．0％。     

蚕丝“织”皮肤有望取代自体皮移植

皮肤深度烧伤后的植皮对患者来说可谓“拆东墙补西墙”，即便如此也难以完全恢复原有的皮肤外观和功能。从近日结束的中国国际丝绸会议上获悉，这类传统的自体皮移植方式有可能被可爱的蚕宝宝分泌的丝蛋白来取代。具体地说，就是蚕丝中的丝素和丝胶将通过科学家的妙手“变出”皮肤、骨骼、血管。     

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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