阿霉素与肺癌单克隆抗体交联物的制备及其生物活性

以氧化葡聚糖法制备阿霉素（ＡＤＭ）与肺癌单克隆抗体＿３Ｄ＿３（ＭｃＡｂ＿３Ｄ＿３）的交联物ＡＤＭ－Ｄｅｘ－ＭｃＡｂ＿３Ｄ＿３，ＡＤＭ与ＭｃＡｂ＿３Ｄ＿３克分子比为４６：１．经ＩＦＡ测定，交联物的抗体活性大部分保持．体外细胞毒试验显示，ＡＤＭ－Ｄｅｘ－ＭｃＡｂ＿３Ｄ＿３对肺癌细胞Ｌ＿（３４２）的杀伤作用比游离ＡＤＭ增强，其５０％的杀伤浓度分别为１．１２μｍｏｌ／Ｌ和２．２３μｍｏｌ／Ｌ；对非靶细胞ＭＧ＿（ｃ－８０３）和ＢＥＬ＿（－７４０２）的毒性很弱，５０％杀伤浓度分别为１７．４５μｍｏｌ／Ｌ和２３．８１μｍｏｌ／Ｌ结果提示ＭｃＡｂ＿３Ｄ＿３具有导向作用，可以携带结合的ＡＤＭ特异地杀伤肿瘤细胞。     

大肠杆菌生产重组人bFGF的发酵条件

对含有具有氨苄抗性、Ｌａｃ启动子和编码人碱性成纤维细胞生长因子（ｈ－ｂＦＧＦ）基因质粒的大肠杆菌的发酵条件进行了研究。为了获得ｈ－ｂＦＧＦ高效表达的最佳条件，进行了摇瓶试验。在ＩＰＴＧ诱导作用下，ｈ－ｂＦＧＦ可以分泌到胞浆中，采用连续流加葡萄糖的高密度分批发酵工艺，经１１ｈ发酵可以获得菌体光密度值（ＯＤ值）达３８，产量达２００ｍｇ／Ｌ和ｈ－ｂＦＧＦ。经纯化后得到的高纯度ｈ－ｂＦＧＦ其理化及生物学特     

黄芪多糖对荷瘤小鼠红细胞免疫功能的影响

采用红细胞Ｃ３ｂ受体花环率（ＲＢＣ－Ｃ３ｂＲＲ），红细胞免疫复合物花环率（ＲＢＣ－ＩＣＲＲ），血清中红细胞Ｃ３ｂ受体花环抑制率（ＲＥＩＲ）和红细胞Ｃ３ｂ受体花环促进率（ＲＦＦＲ）等四个指标，研究了黄芪多糖对Ｓ１８０Ａ小鼠肝癌（ＨＥＰＡ）和小鼠红细胞免疫功能的影响。结果表明，黄芪多糖能明显提高荷瘤小鼠的ＢＢＣ－Ｃ３ｂＲＲ和ＲＦＥＲ，降低ＲＢＣ－ＩＣＲＲ和ＲＦＩＲ。这一结果说明黄芪多糖对荷瘤小鼠红细胞免疫有明显的促进作用。     

成纤维细胞静脉注射途径实施血友病B基因治疗的初步探索

将转有报告基因ｌａｃＺ的成纤维细胞３Ｔ３／ＢＡＧ以５×１０＾５量尾静脉注射到Ｂａｌｂ／ｃ小鼠体内，７ｄ后在主要脏器检测到３ＴＥ／ＢＡＧ的表达且至少可持续３０ｄ。将转有人凝血因子Ⅸ小基因的正向表达载体Ｇ１ＮａＣｉ’Ⅸ和反向表达载体Ｇ１ＮａＣｉ’ⅨＲ的成纤维细胞ＰＡ３１７／Ｇ１ＮａＣｉ’Ⅸ和ＰＡ３１７／Ｇ１ＮａＣｉ’ⅨＲ分别以１×１０＾５量尾静脉注射到Ｂａｌｂ／ｃ小鼠体内，ＥＬＩＳＡ测定小鼠血浆中ｈＦ     

Mg—RE微合金化对Ni_3Al（B）－Gr熔盐腐蚀及力学性能的影响

研究了Ｍｇ－ＦＥ复合微合金化的双相Ｎｉ３ＡＬ（Ｂ）－Ｃｒ基金属间化合物熔盐腐蚀和力学性能，发现Ｍｇ－ＲＥ复合微合金化能降低Ｎｉ３Ａｌ（Ｂ）－Ｃｒ在ＬｉＣｌ－ＫＣｌ熔盐中的阳极电流密度；同时能在不降低Ｎｉ３Ａｌ（Ｂ）－Ｃｒ屈服强度的条件下，提高延伸率近２０％．     

淋巴细胞性脉络丛胞膜炎病毒单克隆抗体的研制及初步鉴定

用提纯的ＬＣＭ病毒抗原（主要为ＮＰ６３）免疫ＢＡＬＢ／Ｃ小鼠，应用鼠—鼠杂交瘤技术获得了三珠（１Ｅ２、１Ｃ６和２Ｄ２）分泌抗ＬＣＭＶ单克隆抗体的杂交瘤细胞系。经检测，它们所分泌的抗体亚类分别为ＩｇＧ１（１Ｅ２）和ＩｇＭ（１Ｃ６）。亲和力为７５μｇ（１Ｅ２）和５μｇ（１Ｃ６）。腹水效价为１０５。免疫荧光阻断法和ＥＬＩＳＡ阻断试验测定结果一致，１Ｅ２的标记物能阻断２Ｄ２，但不能阻断１Ｃ６。三株ＭｃＡｂ对７种鼠源性病毒抗原（ＲｅＯ３、Ｓｅｎｄａｉ、ＭＨＶ、ＧＤⅦ、ＥＨＦＰＶＭ和Ｅｃｔｒｏ）均无反应。     

MTT法检测Rh-bFGF提高Balb/c3T3细胞酶活性及促细胞增殖作用

以Ｂａｌｂ／ｃ３Ｔ３细胞为靶细胞,采用体外细胞培养方法,观察重组人碱性成纤维细胞生长因子的促分裂和提高酶活性作用。结果发现：重组人碱性成纤维细胞生长因子提高Ｂａｌｂ／ｃ３Ｔ３细胞酶活性的最佳作用浓度为６．２５ｎｇ／ｍＬ（μｇ／Ｌ）,而促分裂增殖的最佳作用浓度为１００ｎｇ／ｍＬ（μｇ／Ｌ）。两者分别与应的对照组比较Ｐ＜０．０１,具有统计学意义。从而证实了重组人碱性成纤维细胞生长因子具有促分裂和增强酶活性的作用。     

关于EC－半群的分类

证明了ＥＣ－半群在同构意义上有下列几类：（ａ）Ｍ（４，１），Ｃ２，Ｃ４，Ｃｐ；（ｂ）３或４阶半群；（ｃ）零半群，左零半群，右零半群；（ｄ）Ｃ２×Ｃ２，Ｆ４；（ｅ）（Ｌ，Ｒ）；（ｆ）（Ｓ，Ａ）；（ｇ）（Ｌ，Ｒ，Ａ，ψ）．其中，每一类ＥＣ－半群的结构都得以刻划．     

生化黄腐酸（BcFA）浸种对小麦幼苗生长及干旱时的生理影响

生化黄腐酸（ＢｃＦＡ）浸种对小麦幼苗生长及干旱时的生理影响杨晓玲（河北农业技术师范学院园艺系，昌黎，０６６６００）ＴＨＥＥＦＦＥＣＴＯＦＢＩＯＣＨＥＭＩＣＡＬＦＵＬＶＩＣＡＣＩＤ（ＢｃＦＡ）ＯＮＴＨＥＧＲＯＷＴＨＯＦＷＮＥＡＴＳＥＥＤＬＩＮＧＡＮＤＳ...     

两种杂交群（BALB／c♂×不同♀系）与BALB／c小鼠繁殖性能及单抗腹水产量的比较

对两种杂交群（ＢＡＬＢ／ｃ♂×ＫＭ，ＢＡＬＢ／ｃ♂×ＬＡＣＡ♀）的繁殖能力及制备单抗腹水的产量同ＢＡＬＢ／ｃ近交系进行比较。实验表明，两杂交群的各项繁殖指标均优于ＢＡＬＢ／ｃ，总离乳鼠数分别为ＢＡＬＢ／ｃ的１．９８、２．０７倍，接种人肺炎支原体Ｆ８瘤细胞，ｋＣＦ１（ＢＡＬＢ／ｃ×ＫＭＦ１小鼠）的腹水产量为ＢＡＬＢ／ｃ的２．５倍，效价相同；制备六种单抗腹水ＬＣＦ１（ＢＡＬＢ／ｃ×ＬＡＣＡＦ１）的产量均优于ＢＡＬＢ／ｃ，分别为ＢＡＬＢ／ｃ的１．１７～２．８８倍，除Ｅ１０抗体滴度低外，其它各抗体效价相同或接近于ＢＡＬＢ／Ｃ。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to