猫儿尿植物的化学成分及其药效学研究

首次从木通科猫儿尿（ＤｅｃａｉｓｕｅａｆａｒｇｅｓｉｉＦｒａｎｃｈ）中分离鉴定了１１种皂甙化合物，经光谱分析及化学方法鉴定，其中５种化合物为新化合物，分别命名为：ＤｅｃａｉｓｏｓｉｄｅＡ，Ｂ，Ｃ，Ｄ，Ｇ；另５种化合物为ＳａｐｏｎｉｎＰＧ，ＤｉｐｓａｃｏｓｉｄｅＢ，Ｋａｌｏｐａｎａｘ－ｓａｐｏｎｉｎＢ，Ｓａｐｏｎｉｎ１１，ＨｅｄｅｒａｓａｐｏｎｉｎＢ和ｓａｐｏｎｉｎＰＪ３，猫儿尿对小鼠移植性肿瘤Ｓ１     

非晶态合金的自旋波激发与结构涨落及超精细场分布

本文研究了非晶态（ａ）－Ｆｅ－ＴＭ－Ｓｉ－Ｂ（ＴＭ＝Ｃｏ，Ｓｉ，Ｍｏ，Ｎｂ）合金从１．５Ｋ到３００Ｋ的磁化强度及室温穆斯堡尔谱，得到了成里温度Ｔｃ、饱和磁化强度σｓ（０）、自旋波颈度常数Ｄ及平均超精细场等。结果表明，（ａ）对于Ｆｅ８３Ｓｉ５Ｂ１２，当Ｎｂ，Ｍｏ与Ｓｉ，Ｃｏ取代Ｆｅ后，Ｆｅ－（Ｎｂ，Ｍｏ）－Ｓｉ－Ｂ的磁性质不同于Ｆｅ－（Ｓｉ，Ｃｏ）－Ｓｉ－Ｂ；（ｂ）ａ－Ｆｅ－（Ｍｏ，Ｎｂ，Ｃｒ，Ｗ，     

河北苔藓植物新记录（一）

在研究河北省苔藓植物资源的过程中，首报导了河北产的１３种苔藓植物新记录：扭叶牛毛藓（Ｄｉｔｒｉｃｈｕｍｃｒｉｓｐａｔｉｓｓｉｍｕｍ），青毛藓（Ｄｉｃｒａｎｏｄｏｎｔｉｕｍｄｅｍｕｄａｔｕｍ），尖叶扭口藓（Ｂａｒｂｕｌａｃｏｎｓｔｒｉｃｔａ），黑扭口藓（Ｂａｒｂｕｌａｎｉｇｒｅｓｃｅｎｓ），链齿藓（ＤｅｓｍａｔｏｄｏｎＬａｔｉｆｏｌｉｕｓ），净口藓（Ｇｙｍｎｏｓｔｏｍｕｍｃａｌｃａｒｅｕｍ），钩喙净口藓（Ｇ．Ｃｕｒｖｉｒｏｓｔｒｅ），粗肋曲喙藓（Ｒｈａｍｐｈｉｄｉｕｍｃｒａｓｓｉｃｏｓｔａｔｕｍ），钝叶扭毛藓（Ｓｔｒｅｂｌｏｔｒｉｃｈｕｍｏｂｕｔｓｉｆｏｌｉｕｍ），紫萼藓（Ｇｒｉｍｍｉａａｆｆｉｎｉｓ），山地紫萼藓（Ｇｒｉｍｍｉａｍｏｎｔａｎａ），卵叶紫萼藓（Ｇｒｉｍｍｉａｏｖａｌｉｓ），卷叶凤尾藓（Ｆｉｓｓｉｄｅｎｓｃｒｉｓｔａｔｕｓ）。其中，牛毛藓属（Ｄｉｔｒｉｃｈｕｍ），青毛藓属（Ｄｉｃｒａｎｏｄｏｎｔｉｕｍ），净口藓属（Ｇｙｍｎｏｓｔｏｍｕｍ），曲喙藓属（Ｒｈａｍｐｈｉｄｉｕｍ），扭毛藓属（Ｓｔｒｅｂｌｏｔｒｉｃｈｕｍ）等５属为河北省新记录属。     

川黄柏叶中黄酮成分的研究

利用柱层析和光谱分析方法研究川黄柏（ＰｈｅｌｌｏｄｅｎｄｒｏｎｃｈｉｎｅｎｓｅＳｃｈｎｅｉｄ）叶的黄酮类化合物,分离并鉴定了３个化合物（Ⅰ、Ⅱ、Ⅲ）．即槲皮素－３－０－β－Ｄ半乳糖甙（Ⅰ）,又名金丝桃甙（Ｈｙｐｅｒｏｓｉｄｅ）、双氢山奈酚（Ⅱ）（Ｄｉｈｙｄｒｏｋａｅｍｐｆｅｒｏｌ）和５’－异戊烯基双氢山奈酚－７－Ｏ－β－Ｄ葡萄糖（Ⅲ）,命名为黄柏新甙Ａ（ＰｈｅｌｌｏｃｈｉｎｉｎＡ）．其中Ⅲ是新化合物,Ⅱ是首次从本属植物中发现。     

New Process of Fine Grinding-activation of Heavy CaCO_3 and Its Application to PVC Rigid Sheet

ＮｅｗＰｒｏｃｅｓｏｆＦｉｎｅＧｒｉｎｄｉｎｇ┐ａｃｔｉｖａｔｉｏｎｏｆＨｅａｖｙＣａＣＯ３ａｎｄＩｔｓＡｐｐｌｉｃａｔｉｏｎｔｏＰＶＣＲｉｇｉｄＳｈｅｔＨｕＰｉｎｇ（胡平），ＧａｉＧｕｏｓｈｅｎｇ（盖国胜），ＪｉｎＹｏｎｇ（金涌）Ｄｅｐａｒｔｍｅｎ...     

河田鸡线粒体DNA物理图谱

运用差速离心法、蛋白酶Ｋ及ＲＮａｓｅ消化法制备并纯化河田鸡（ＧａｌｕｓｇａｌｕｓｄｏｍｅｓｔｉｃｕｓＨｅｔｉａｎｂｒｅｅｄ）的线粒体ＤＮＡ（ｍｔＤＮＡ）．用１１种限制酶对其进行单酶切分析,结果表明,ＡｖａＩ、ＢａｍＨＩ、ＢｇｌＩ、ＤｒａＩ、ＥｃｏＲＩ、ＨｐａＩ、ＰｖｕⅡ、ＳａｃＩ、ＳａｌＩ和ＳｔｕＩ在河田鸡ｍｔＤＮＡ上分别有５、２、４、５、１、３、４、３、３和＞９个酶切位点,Ｓｃａｌ在不同个体河田鸡ｍｔＤＮＡ上检测出两种限制性格局,分别有２和３个酶切位点．此外,还用ＢａｍＨＩ、ＢｇｌＩ、ＤｒａＩ、ＥｃｏＲＩ、ＨｐａＩ、ＰｖｕⅡ、ＳａｃＩ、ＳａｌＩ和ＳｃａＩ进行双酶切,构建了ｍｔＤＮＡ的物理图谱     

Inhibition of Hepatitis C Virus Translation with Synathetic Nucleic Acids-A Molecular Approach to Antiviral Therapy

ＣａｓｅｌｍａｎｎＷ．Ｈ．（Ｄｅｐｔ．ｏｆＧｅｎｅｒａｌＩｎｔｅｒｎａｌＭｅｄｉｃｉｎｅ,ＵｎｉｖｅｒｓｉｔｙｏｆＢｏｎｎ,Ｓｉｇｍｕｎｄ－Ｆｒｅｎｕｄ－Ｓｔｒａｓｅ２５,Ｄ－５３１０５Ｂｏｎｎ,Ｇｅｒｍａｎｙ）Ｔｈｅｌａｃｋｏｆａｎｅｆｅｃｔｉｖｅ...     

江西庐山自然保护区苔藓植物的染色体研究

报道了江西庐山自然保护区７种苔藓植物的染色体数。１花叶溪苔Ｐｅｌｌｉａ ｅｄｉｖｉａｅｆｏｌｉａ（Ｄｉｃｋｓ）Ｄｕｍ．ｎ＝８＋ｍ;２．南溪苔Ｍａｘｉｎｏａ ｃｒｉｓｐａｔａ（Ｓｔｅｐｈ．）Ｍｉｙａｋｅ．ｎ＝９;。地钱Ｍａｒｃｈａｎｉｔｉａｐｏｌｙｍｏｒｐｈａ Ｌ．ｎ＝９;４．疣白发藓Ｌｅｕｃｏｂｒｙｕｍ ｓｃａｂｒｕｍ Ｌａｃ．ｎ＝１１;５．截叶真藓Ｂｒｙｕｍ ｔｒｕｎｃｏ－ｒｕｍ（Ｂｒｉｄ．）     

人组织型纤溶酶原激活剂（t—PA）在大肠杆菌中的表达,…

人组织型纤溶酶原激活剂（ｔ－ＰＡ）ｃＤＮＡ重组在表达质粒ｐＤＲ７２０中。在Ｅ．ｃｏｌｉＣ６００中获得了表达，表达水平为２％。以醋酸锌显色ＰＡＧＥ凝胶回收ｔ－ＰＡ表达条带，进行复性处理。复性产物经Ｂｅｎｚａｍｉｄｉｎｅ－Ｓｅｐｈａｒｏｓｅ４Ｂ，Ｌｙｓｉｎｅ－Ｓｅｐｈａｒｏｓｅ４Ｂ亲和层析，纯化得到ＳＤＳ－ＰＡＧＥ银染一条带纯度，比活为４，０００ｍｏｌ／ｓ·ｇ的人ｔ－ＰＡ。     

A New Framework for Intranet-based Group Decision Support System

ＩｎｔｒｏｄｕｃｔｉｏｎＧｒｏｕｐＤｅｃｉｓｉｏｎＳｕｐｐｏｒｔＳｙｓｔｅｍ（ＧＤＳＳ）ｈａｓｂｅｅｎａｎｅｗＤＳＳｒｅｓｅａｒｃｈａｒｅａｓｉｎｃｅ１９８０ｓ．ＮｏｗｉｔｈａｓｂｅｃｏｍｅａｎｉｍｐｏｒｔａｎｔｔｒｅｎｄｏｆＤＳＳ［１,２］．ＡＧＤＳＳｃｏｍｂｉｎｅｓｃｏｍｍｕｎｉｃａｔｉｏｎ,ｃｏｍｐｕｔｉｎｇ,ｄｅｃｉｓｉｏｎｓｕｐｐｏｒｔｔｅｃｈｎｏｌｏｇｉｅｓ,ａｎｄｍｏｄｅｒｎｉｎｆｏｒｍａｔｉｏｎｔｈｅｏｒｙｔｏｆａｃｉｌｉｔａｔｅｆｏｒｍｕｌａｔｉｏｎａｎｄｓｏｌｕｔｉｏｎｏｆｉ…     

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.     

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