马氏钳蝎中一种新的α—神经毒素三级结构的分子模建

用同源模建与马氏钳蝎中的一种新的α型昆虫神经毒素的三级结构进行了计算。尽管此毒素具有非典型的二硫桥结构，但还是保持了蝎毒的一般的结构特征。其中４个二硫键的位置为：Ｃｙｓ１２－Ｃｙｓ６３，Ｃｙｓ１６－Ｃｙｓ３６，Ｃｙｓ２２－Ｃｙｓ４６，及Ｃｙｓ２６－Ｃｙｓ４８，１个α螺旋分别由２个二硫键桥连接到中间那个β主链与其他结构连接在一起。所以ＢｍＫαＩＴ１个的芯结构并不象其他毒那样紧密。有２个沟处于分子的表     

ON THE GLOBAL VALIDITY OF SYMPLECTIC INTEGRATION METHOD

ＨａｄｊｉｄｅｍｅｔｒｉｏｕｐｒｏｐｏｓｅｄａｓｙｓｔｅｍａｔｉｃｍｅｔｈｏｄｔｏｃｏｎｓｔｒｕｃｔａｍａｐｐｉｎｇｍｏｄｅｌｆｏｒａＨａｍｉｌｔｏｎｉａｎｓｙｓｔｅｍ，ｔｈｅｍａｉｎｉｄｅａｉｓｔｏｐｒｅｓｅｒｖｅｔｈｅｂａｓｉｃｆｅａｔｕｒｅｏｆ...     

缺失Cys45—Cys50二硫键的三种突变体凝乳酶原复性的比较研究

通过对（Ｃｙｓ－Ａｓｐ）４５／（Ｃｙｓ－Ｓｅｒ）５０，（Ｃｙｓ－Ａｓｐ）４５和（Ｃｙｓ－Ｓｅｒ）５０３种突变体凝乳酶原复性的比较研究，发现：１．３种突变体凝乳酶原多肽链复性的条件基本一致。（２）ＰＤＩ能有效地促进３种突变体凝乳酶原的复性；３．３种突变体凝乳酶原的活化条件一致；４．单突变体凝乳酶原多肽链正确折叠的效率低于双突变体。基于上述结果，我们认为，Ｃｙｘ４５－Ｃｙｓ５０二硫键的形成有利于凝乳酶     

我国无形资产管理亟待制度化,科学化,法制化

我国无形资产管理亟待制度化、科学化、法制化ＴｈｅＳｙｓｔｅｍａｔｉｚａｔｉｏｎ，ＳｃｉｅｎｔｉｆｉｃＭａｎａｇｅｍｅｎｔａｎｄＬｅｇａｌＳｙｓｔｅｍｉｎｔｈｅＭａｎａｇｅｎｅｎｔｏｆＣｈｉｎａ’ｓＩｎｔａｎｇｉｂｌｅＡｓｓｅｔｓ￥／／邓天佐（国家科委...     

关于乘积空间上的Marcinkiewicz积分

该文给出了如下定义乘积空间Ｒｎ×Ｒｍ上一类带粗糙核的Ｍａｒｃｉｎｋｉｅｗｉｃｚ积分算子μΩ，ｂ（ｆ）的Ｌ２（Ｒｎ×Ｒｍ）有界性：μΩ，ｂ（ｆ）（ｘ，ｙ）＝（∫∞０∫∞０｜Ｆｂ，ｔ，ｓ（ｘ，ｙ）｜２ｄｔｄｓｔ３ｓ３）１／２，这里，Ｆｂ，ｔ，ｓ（ｘ，ｙ）＝｜ｘ－ｕ｜≤ｔ｜ｙ－ｖ｜≤ｓΩ（ｘ－ｕ，ｙ－ｖ）ｂ（｜ｘ－ｕ｜，｜ｙ－ｖ｜）｜ｘ－ｕ｜ｎ－１｜ｙ－ｖ｜ｍ－１ｆ（ｕ，ｖ）ｄｕｄｖ，且Ω为原子Ｈａｒｄｙ空间Ｈ１ａ（Ｓｎ－１×Ｓｍ－１）中的函数，ｂ为空间ｌ∞（Ｌｑ（Ｒ＋×Ｒ＋）中的径向函数     

Additions to the Cycadaceous Flora of China

发表了广西苏铁５个新种．①长球果苏铁ＣｙｃａｓｌｏｎｇｉｃｏｎｉｆｅｒａＣｈａｎｇ，Ｙ．Ｃ．ＺｈｏｎｇｅｔＹ．Ｙ．Ｈｕａｎｇ以雄球果狭长，羽叶疏远为特征；②尖尾苏铁ＣｙｃａｓａｃｕｍｉｎａｔｉｓｉｍａＣｈａｎｇ，Ｙ．Ｃ．ＺｈｏｎｇｅｔＺ．Ｆ．Ｌｕ以羽片先端尖长，大孢子叶短小为特征；③掌裂苏铁ＣｙｃａｓｐａｌｍａｔｉｆｉｄａＣｈａｎｇ，Ｙ．Ｙ．ＨｕａｎｇｅｔＹ．Ｃ．Ｚｈｏｎｇ以大孢子叶掌状深裂、裂片圆锥状，刺特长为特征；④七籽苏铁ＣｙｃａｓｓｅｐｔｅｍｓｐｅｒｍａＣｈａｎｇ，Ｙ．Ｙ．ＨｕａｎｇｅｔＨ．Ｘ．Ｚｈｅｎｇ以羽片及刺均极短，胚珠７个为特征；⑤短叶苏铁ＣｙｃａｓｂｒｅｖｉｐｉｎｎａｔａＣｈａｎｇ，Ｙ．Ｙ．ＨｕａｎｇｅｔＹ．Ｃ．Ｚｈｏｎｇ以羽叶和羽片均短小，刺亦极短为特征     

二阶半线性微分各分方程的奇摄运边值问题

本文研究微分积分方程奇摄动边值问题εｄ＾２ｙ／ｄｔ＾２＝ｇ（ｔ，ｙ，ｊ，ε），ｙ（０，ε）＝ｙ（１，ε）＝０，０〈ε《１，其中Ｊ＝ψ（ｔ，ε）＋∫＾α０Ｋ（ｔ，ｓｙ（ｓ，ε），ε）ｄｓ，ａ＝１或ｔ。首先利用边界层函数法构造了这个问题解关于√ε的形成渐近展开，然后证明该问题解的局部存在唯一性以及所构造渐近级数的一致有效性。     

半胱氨酸组成的二肽与锌络合的研究（部分一）：二肽和 …

制备了只由半胱氨酸组成的二肽,即Ｃ０保护的Ｈ－Ｃｙｓ－Ｃｙｓ－ＯＥｔ（１）和未来保护的Ｈ－Ｃｙｓ－Ｃｙｓ－ＯＨ（２）。     

量子群SU（1，1）_q的新表示及其相干态

本文中我们构造了量子群ＳＵ（１，１）＿ｑ的Ｄｙｓｏｎ表示，并找出了该表示与Ｈｏｌｓｔｅｉｎ－Ｐｒｉｍａｋｏｆｆ表示之间的变换关系，同时文中讨论了Ｄｙｓｏｎ表示对应的相干态，它正是ｑ畸变的Ｗｅｙｌ－Ｈｅｉｓｅｎｂｅｒｇ相干态．     

酵母菌的分离及鉴定

从新疆吐鲁番所采的土样中分离出的３株编号为Ｓｙ９５－００１、Ｓｙ９４－００２、Ｓｙ９４－００３的酵母菌株，通过形态和生理生化试验，初步鉴定为：克洛克酵母属（Ｋｌｏｅｃｋｅａｓｐ．）、假丝酵母属（Ｃａｎｄｉｄａ）的热带假丝酵母（Ｔｒｏｐｉｃａｅｉｓ）、类酵母属（Ｓａｃｃｈａｒｏｍｙｃｏｄｅｓ）的中国类酵母（ｓｉｎｅｎｓｉｓ）     

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.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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-