离体玉米精细胞的电泳分析与分离

细胞显微电泳表明，介质ＰＨ值对离体玉米精细胞电泳迁移率有较大影响，在ＨＣｌＧｌｙ（甘氨酸）缓冲液中，其等电点介于ＰＨ２．４－３．０；在ＰＨ６．７的ＭＥＳ缓冲液中，电泳后统计分析表明，离体玉米精细胞可以区分为电泳迁移率有差异的２种类型，其电泳迁移率分别为（１．８０３±０．０４３）×１０＾－６和（１．６６７±０．０５２）×１０＾－６ｍ＾２．Ｖ＾－１．ｓ＾－１。根据电泳迁移率的差异，利用一种支无持细胞电     

应用PCR－SSCP银染技术检测消化系统肿瘤的P53基因突变

应用ＰＣＲ－ＳＳＣＰ银染技术，初步研究了肝细胞癌、胃癌和大肠癌中Ｐ５３基因的第６和第７外显子的分子结构改变。对来自癌组织ＤＮＡ和正常组织ＤＮＡ的ＰＣＲ－ＳＳＣＰ电泳带迁移作对比分析，发现３０例肝癌病人中，６例肝癌样品电泳带迁移异常；２６例胃癌病人中，４例胃癌样品电泳带迁移异常；２９例大肠癌病人中，６例大肠癌样品电泳带迁移异常。依据ＤＮＡ单链构象与分子电泳迁移的关系，研究结果表明：该三组病人中，Ｐ５３基因第６、７外显子的突变率分别为２０．０％，１５．４％和２５．０％。同时，也间接提示了Ｐ５３基因突变可能是肝细胞癌、胃癌和大肠癌中一种较多见的分子结构改变。     

福建煤炭生产的费-效及成本影响的灰色预测

本文应用灰色理论，建立福建煤炭生产的费－效及原煤成本影响度ＧＭ（１，１）模型群，预测和分析福建原煤的费－效值及相关因素对原煤成本的动态影响程度，探讨研究福建煤炭生产的费－效动态关系的新途径．表３，参２．     

SDS-PAGE法检测人甲状腺及其肿瘤组织中bFGFs条件的选择

目的：探讨SDS－PAGE法检测人甲状腺及其肿瘤组织中bFGFs（basicFibroblastGrowthFactors）的条件。方法：采用SDS-PAGE电泳法检测人甲状腺及其肿瘤组织中的bFGFs．结果：分离胶浓度为12．5％,胶厚为0．5cm,电流强度为30mA,样品量为5－6ul,标准bFGFs上样量为20ul较适全人甲状腺及其肿瘤组织中各种分子量的bFGFs的分离及鉴定。结论：人甲状腺及其肿瘤组织中各种分子量的bFGFs的分离及鉴定与SDS－PAGE电泳时条件的选择密切相关。     

丝兰酶及其提取工艺的研究

直接干燥丝兰叶表栅状组织获得粗酶。用硫酸铵分级盐析取得酶制剂，它的最适ｐＨ值为１２。用有机汞作配基的琼脂糖凝胶４Ｂ柱分离出酶，聚丙烯酸胺凝胶电泳证明柱分离物为两个蛋白酶组分（ＹｕｃｃａｉｎⅠ、Ｙｕｃ－ｃａｉｎⅡ），簿层等电聚焦电泳证实这两个组分等电点分别为ｐＨ值９．７７和ｐＨ值９．６１，ＳＤＳ电泳两个酶仅看到１条染色带，测得分子量为３万。它们的活性均依赖于巯基。     

免疫核糖核酸作用机制的研究──抗SRBCIRNA的电泳分离及分离组分对靶细胞的作用

报道了用聚丙烯酰胺凝胶电泳法和电泳洗脱法分离抗 ＳＲＢＣ ＩＲＮＡ及各分离组分的 活性．结果表明电泳能将ＩＲＮＡ分为３０多条带．沉降系数为８～１８ｓ的Ｆｒ２组分具有传递免疫反应的活性。测定了总ＩＲＮＡ及其各组分对 Ｔ细胞和 Ｂ细胞的作用，表明总 ＩＲＮＡ既能激活Ｔ细胞，亦能激活Ｂ细胞． Ｆｒ２－ａ能激活 Ｔ细胞，Ｆｒ２－２，Ｆｒ２－ｂ、 Ｆｒ２－ｃ和Ｆｒ２－ｄ都能激活Ｂ细胞、实验还表明ＩＲＮＡ不大可能作为抗体的直接模板。     

福建棘隙吸虫的蛋白质组分及基因组DNA多态性分析

采用RAPD技术和等电聚焦电泳方法，对福建棘隙吸虫福建株和广东株虫体进行基因组DNA多态性分析和蛋白质等电点测定。结果表明，15个随机引物在两虫株基因组DNA中共获得扩增带182条，二者共有的89条，广东株特有的4条，其共享度为0．978，遗传距离指数为0．022；两虫株的蛋白质经电泳分离均可获得9条区带，其中有7条区带的等电点相同，第Ⅳ，Ⅴ条蛋白区带的等电点存在差异。研究表明在福建和广东两地流行的福建棘隙吸虫是同一种属。     

弓斑东方鱼屯同工酶生化表现型的初步研究

利用聚丙烯酰胺凝胶垂直平板电泳方法，对弓斑东方（ｆｕｇｕｏｃｅｌａｔｕｓ）的５种同工酶ＥＳＴ、ＬＤＨ、ＳＯＤ、ＰＯＤ、α－ＡＭＹ进行了研究，分析了其组织特异性，讨论了各同工酶的基因表达谱式，观察到ＥＳＴ同工酶谱复杂，可分成三个区域；ｓ－ＭＤＨ同工酶有二个基因座位，ｍ－ＭＤＨ同工酶不稳定；ＳＯＤ同工酶有三个基因位点，本文还对需进一步研究的问题和各同工酶的应用前景进行了讨论．     

SrTi1—xMgxO3—δ薄膜的氧敏特性

采用电泳沉积方法，制备了ＳｒＴｉ１－ｘＭｇｘＯ３－δ薄膜，研究了薄膜的氧敏特性．     

中国鲎血蓝蛋白研究

应用超离心和柱层析结合聚丙烯酰胺凝胶电泳（ＰＡＧＥ）及电镜技术，研究中国鲎血蓝蛋白的结构特点．结果表明，经ＳｅｐｈａｄｅｘＧ－１００纯化的血蓝蛋白在ＰＡＧＥ电泳中出现４条带．纯化的血蓝蛋白再经ＤＥＡＥ－３２纤维素柱层析得到５个洗脱峰，每个峰在ＰＡＧＥ电泳下可分辨出４条带．在电镜下，血蓝蛋白分子出现环形、五角形、十字形和蝴蝶结形等构型并与其他解离的中间的构型同时存在．     

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.     

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.     

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.     

A computer generator for randomly layered structures

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

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.     

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。     

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.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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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