石刀柏花药离体培养若干因素的探讨

本文报道了芦笋（石刀柏）（ＡｓｐａｒａｇｕｓｏｆｆｉｃｉｎａｌｉｓＬ．）花药离体培养中不同品种、不同激素配比等因子的影响．结果表明：（１）芦笋不同品种的愈伤组织诱导率存在显著差异（Ｐ＜０．０１）．５个品种中，以ＵＣ３０９为最高达２６．５％，ＵＣ１５７为最低仅７．１％．（２）在同一培养基上，不同激素配比对器官分化的影响是明显的．认为ＮＡＡ和６－ＢＡ为１：１配比时，对愈伤组织的器官分化是适宜的．     

重度联合免疫缺陷（SCID）小鼠的繁育及其应用研究初报

应用带过滤罩的透明鼠笼在层流架内繁育先天性Ｔ和Ｂ淋巴细胞免疫缺陷的重度联合疫缺陷（ｓｅｖｅｒｅＣｏｍｂｉｎｅｄＩｍｍｕｎｏｄｅｆｉｃｉｅｎｃｙ，ＳＣＩＤ）小鼠获得成功。１９９３年５月自中国医学科学院实验动物研究所引进了３对ｓｃｉｄ小鼠种鼠以来，现已近交繁育至第十代共繁育ｓｃｉｄ小鼠７Ｚ０只，其寿命均超过１２个月。平均产仔数为５．５只，不育率为１４．９％，离乳率为８８．２％。ｓｃｉｄ小鼠４－１０周龄的体重与ＢＡＬＢ／ｃ小鼠相比无明显差异，微生物学检测符合ＳＰＦ级小鼠标准。解剖发现其胸腺极小，胸腺的相对重量仅为同龄ＢＡＬＢ／ｃ小鼠的６％左右；脾脏相对重量为２７－３７％；外周血淋巴细胞仅占白细胞总数的１１－２６％。应用酶联免疫酶标法测定３－４周龄和大于１０周龄的ｓｃｉｄ小鼠血清ＩｇＧ的含量均小于１×１０￣（－３）ｍｇ／ｍｌ，没有发现ｓｃｉｄ小鼠的“渗漏”现象。人癌移植于ｓｃｉｄ小鼠后获得３种人癌移植瘤：肺腺癌（ＬＡＸ－８３）、肝细胞肝癌（ＬＣ－４１２）、结肠粘液腺癌（ｃｏｌｏｎ），其平均瘤重均显著大于ＢＡＬＢ／ｃ裸小鼠。     

精炼渣系的发泡性能

针对ＣａＯ－ＭｇＯ－Ａｌ２Ｏ３－ＳｉＯ２－ＣａＦ２五元精炼渣系进行了有关发泡性能的实验。实验结果表明：（１）随着吹气量的增加，炉渣相对发泡高度相应增加，两者之间存在着较好的线性关系；（２）当炉渣碱度〈２．５时，炉渣中ＭｇＯ质量分数在１１％左右对炉渣发泡有利，而在高碱度操作时ＭｇＯ质量分数则应该低一些；（３）对于低碱度不ｌ２Ｏ３为１５％；（ＭｇＯ）＋（Ａｌ２Ｏ３）为２０－２６％较好；（４）炉渣碱度对     

(Bu_4N)_2Mo(mnt)_3的晶体结构

（Ｂｕ４Ｎ）２ＭＯ（ｍｎｔ）３系针状墨绿色晶体，晶胞参数，ａ＝１０．２０８（６）Ａ；ｂ＝１５．８４１（５）Ａ；ｃ＝１８．００３（３）Ａ；α＝８６．６７（２）°；β＝８４．２０（４）°γ＝１０７．７４（４）°，空间群Ｃ＇ｉ－ＰＴ；Ｚ＝２；ρｏｂｓ＝１、２１８，ρｃαｌｃ＝１．２１０克／厘米３．在四园衍射仅上收录 Ⅰ≥１σ（Ⅰ）独立衍射点３０３５个，晶体结构由三维Ｐａｔｔｅｒｓｏｎ函致和电子密度函数解出，经全矩阵最小二乘法精修，偏离因子Ｒ＝０．０８７．结构分析结果表明，晶体结构由Ｍｏ［Ｓ２Ｃ２（ＣＮ２］２－３和［Ｎ（Ｃ４Ｈ９）］４＋构成。阴离子Ｍｏ［Ｓ２Ｃ２（ＣＮ）２］２－３是由三个配位体［Ｓ２Ｃ２（ＣＮ）２］２－中的二个Ｓ原子与Ｍｏ原子螯合，基本上成三棱柱方式配位．     

异烟酸铬（Ⅲ）配合物热分解脱水反应非等温动力学研究

本文对Ｃｒ２（Ｉｎｉｃ）３Ｃｌ３（Ｈ２Ｏ）３．５Ｈ２Ｏ配合物进行了热分解脱水反应非等温动力学研究，运用Ａｃｈａｒ法与Ｃｏａｔｓ－Ｒｅｄｆｅｒｎ法，推断该热分解脱水反应力三级反应，其动力学方程为ｄα／ｄｔ＝Ａｅｘｐ（－Ｅ／ＲＴ）．０．５（１－α）＾３，动力学补偿效应表达式为１ｎＡ＝０．３０２７Ｅ－１．２９７９。     

在混合溶剂中碳酸解离热力学研究Ⅲ：碳酸钠＋碳酸氢钠＋氯化…

在Ｘ＝５质量％的尿素－水混合物中，在２７８．１５－３１８．１５Ｋ温度范围内，利用电池：Ｐｔ，Ｈ２（１０１．３２５ｋＰａ）｜Ｎａ２ＣＯ３（ｍ１），ＮａＨＣＯ３（ｍ２），ＮａＣｌ（ｍ３），５质量％尿素－水｜ＡｇＣｌ－Ａｇ的准确电动势数据，确定了在５％的尿素－水混合物中碳酸二级解离常数Ｋ２。     

绵山清水河着生硅藻之研究

１９９３年５月２２日，在绵山清水河设６个采样断面作着生硅藻的采集，研究结果计有２２个属和７３个种、变种和变型，分属２个纲、５个目７个科，其中以极小曲壳藻杰克变种（Ａｃｈｎａｎｔｈｅｓｍｉｎｕｔｉｓｓｉｍａａｖａｒ．ｊａｃｋｉｉ）为主要优势种，以极小曲壳藻强壮变种（Ａｃｈｎａｎｔｈｅｓｍｉｎｕｔｉｓｓｉｍａｖａｒ．ｒｏｂｕｓｔａ）和喙头舟形藻（Ｎａｖｉｃｕｌａｒｈｙｃｈｏｃｅｐｈａｌａ）为亚优势种，ｓｈａｎｏｎ－ｗｅａｖｅｒ指数为３．２６，硅藻群落分布符合对数正态分布，指示水质清洁。     

防落素B《Cl(C_6H_4)OCH_2COOC_4H_9》分子和晶体结构

防落素Ｂ系薄片状无色透明晶体，晶体的空间群为Ｃｃｌ５－Ｐ（ｚ１）／ｎ晶胞参数以ａ＝７．９５８（２）Ａ；ｂ＝３１．８５０（６）Ａ；ｃ＝５．２５０（３）Ａ；β＝１０６．５７（２）；Ｚ＝４；ρｏｏｓ＝１．２５克／厘米３，ρｏａｉｃ＝１．３４５克／厘米３，在四园衍射仪上用Ｍ０－Ｋα射线收录Ｉ＞１σ（Ｉ）独立衍射点１２９９个，晶体结构由直接法解出，经全矩阵最小二乘法精修，偏离因子＝０．１０２．结构分析表明，化合物中，苯环、支链羧基和正丁基三部分分别为三个平面；苯环与羧基平面交角为８、２°，苯环与正丁基平面交角为９．３°，羧基与正丁基平面交角为５．６°，苯环的－Ｃ－Ｃ－键平均键长为 １．３７０Ａ，化合物分子轴沿着晶胞ｂ轴方向排布。     

Cu(NH_3)_4Ag(SCN)_3的晶体结构

Ｃｕ（ＮＨ３）４Ａｇ（ＳＣＮ）３晶体的空间群是Ｃ３ Ｓ－Ｃｍ，其晶胞参数为：ａ＝１１．４６Ａ，ｂ＝２１．５５Ａ，Ｃ＝５．５７Ａ，β＝１０９°２０′，Ｚ＝４（ρｏｂｓ＝２．１９５ｇ／ｃｍ３，ρｃａｌｃ＝２．０７６ｇ／ｃｍ３）。在这个晶体结构中，Ａｇ原子由４个Ｓ原子按四面体方式配位，每两个ＡｇＳ４四面体通过共棱而成对地联结；两个ＳＣＮ的另一端Ｎ原子在Ｃｕ-Ｎ（ＮＨ３）正方形的上下方，使Ｃｕ具有正方双锥的配位构型。     

复合型纳滤膜的制备及表征

在聚砜基膜上用界面聚合法制备了两种复合型纳滤膜ＰＡ０１和ＰＡ０２。在０．３ＭＰａ下,ＰＡ０１膜对ＭｇＳＯ４溶液和ＦｅＣｌ３溶液的脱直 ９６．０％和７８．０％,水通量分别为８．５（Ｌ．ｍ＾－２．ｈ＾－１）和７．９（Ｌ．ｍ＾－２．ｈ＾－１）;ＰＡ０２膜对ＭｇＳＯ４ｉｐｗｋｉｙｗ （２．０ｇ．Ｌ＾－１）和ＣａＣｌ溶液（０．５ｇ．Ｌ＾－１）的脱盐率分别为９８．０％和８８．８％,水通量分别为１．０（Ｌ。ｍ＾     

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