红原县引种早熟与晚熟猫尾草的核型分析

对红原县引种早熟与晚熟猫尾草(Phleum pratense L.)细胞染色体进行核型分析.研究表明,早熟猫尾草染色体数为2n=28,染色体的核型为K(2n)=2n=4x=28=22m+4sm(SAT)+2st(SAT),其中第5、11对染色体为近中部着丝粒染色体,第8对染色体为亚端部着丝粒染色体,其余各对染色体为中部着丝粒染色体,第8对染色体携带随体;晚熟猫尾草染色体数为2n=42,染色体的核型为K(2n)=2n=6x=42=2M+24m+14sm+2sm(SAT),其中第3、4、6、11、12、13、14、20对染色体为近中部着丝粒染色体,第18对染色体为正中部着丝粒染色体,第22号为B染色体,其余各对染色体为中部着丝粒染色体,第11对染色体携带随体.早熟与晚熟猫尾草都属2A核型.     

山东6种植物的染色体研究

对山东6种植物进行了染色体研究．白英(Solanum lyratum Thunb．)染色体数目为2n=24。核型公式K(2n)=2x=24=20m 4sm,核型“1A”;葎草(Humulus scandens(Lour．)Merr．)染色体数目为2n=16,核型公式K(2n)=2x=16=8m 8sm,核型“2A”;白刺花(Sophora vicifoliaHance．)染色体数目为2n=18。核型公式K(2n)=2x=18=2M 14m 2sm,核型“1A”;有斑百合(Lilium concolor var ．pulchellum(Fisch．)Regd．)染色体数目为2n=24,核型公式K(2n)=2x=24=4m 2sm 6st 12t,核型“3A”;野韭(Allium ramosum L.)染色体数目为2n=16 1B,核型公式K(2n)=2x=16=12m 2sm 2st 1B,核型“2A”;狼尾花(Lysimachia barystachys Bge．)染色体数目为2n=24,核型公式K(2n)=2x=24=14m 10sm,核型“2A”。     

钝叶决明核型分析

决明核型报道存在不一致性,本研究采用常规切片和显微分析技术对钝叶决明(Cassia obtusifoliaL.)染色体数目、核型、体积等进行了系统研究.结果表明:钝叶决明根尖细胞为2n=24的丝状染色体;核型公式为K(2n)=24=24 m;染色体相对长度组成为2n=24=4L+8 M2+6 M1+6S,属于"1B"型.全染色体总长为54.17μm,长臂总长31.49μm,核型不对称系数为58.13%.染色体总体积53.17μm3.钝叶决明染色体为2n=24形态清晰的丝状染色体,与前人2n=22的点状小染色体和2n=26的报道不同.     

益母草的染色体组型研究

本文研究了益母草的核型,结果表明,益母草的体细胞染色体数目2n=20,核型公式为K(2n)=20=12m(2SAT) 8sm。均属中部着丝点和亚中部着丝点染色体,第6对染色体具随体。并与已报道过的该种核型作了比较研究。     

六株越橘实生苗的染色体核型分析

以六株越橘实生苗为材料,去壁低渗火焰干燥法制片后观察记录染色体数,并进行染色体核型分析。实验结果表明：所有实验材料均属2B核型。其中1号材料体细胞染色体数目为48,核型公式为2n=4x=34m+12sm(2SAT)+2T;2号材料体细胞染色体数目为48,核型公式为2n=4x=48=32m(2SAT)+10sm(2SAT)+4st+2T;3号材料体细胞染色体数目为48,核型公式为2n=4x=48=38m(2SAT)+8sm+2T;4号材料体细胞染色体数目为48,核型公式为2n=4x=48=30m(4SAT)+12sm+6st;5号材料体细胞染色体数目为24,核型公式为2n=2x=24=20m+4sm(2SAT);6号材料体细胞染色体数目为24,核型公式为2n=2x=24=16m(2SAT)+6sm+2st。     

6株越橘实生苗的染色体核型分析

以6株越橘实生苗为材料,去壁低渗火焰干燥法制片后观察记录染色体数,并进行染色体核型分析.实验结果表明:所有实验材料均属2B核型.其中1号材料体细胞染色体数目为48,核型公式为2n=4x=34 m+12sm(2SAT)+2T;2号材料体细胞染色体数目为48,核型公式为2n=4x=48=32 m(2SAT)+10sm(2SAT)+4st+2T;3号材料体细胞染色体数目为48,核型公式为2n=4x=48=38 m(2SAT)+8sm+2T;4号材料体细胞染色体数目为48,核型公式为2n=4x=48=30 m(4SAT)+12sm+6st;5号材料体细胞染色体数目为24,核型公式为2n=2x=24=20 m+4sm(2SAT);6号材料体细胞染色体数目为24,核型公式为2n=2x=24=16 m(2SAT)+6sm+2st.     

豆科锦鸡儿属云南锦鸡儿(Caragana franchetiana)染色体数目及核型研究

采取常规根尖压片法首次对豆科锦鸡儿属云南锦鸡儿进行了染色体数目和核型的分析统计。结果表明,云南锦鸡儿(Caragana franchetiana)为二倍体植物。其染色体数目2n=16,8对均为中部着丝粒染色体。核型公式为2n=2x=16=8m。最长染色体与最短染色体的长度比为1.2,臂比大于2的百分比为0,核型类别属于1A型,为较对称核型。没有观察到带随体的染色体。     

冬凌草的染色体数目及核型分析

利用Gimesa显带技术对冬凌草进行了染色体数目和染色体核型分析,研究结果表明:冬凌草染色体数目为2n=2x=24,相对长度组成为2n=2x=24=10M2 14M1,核型公式为K(2n)=2x=24=16m 8sm.所研究中,G-显带条纹数目虽然有限,但能准确的反映染色体结构特点,从而提高染色体识别的准确性和核型分析的精确性.从染色体水平初步推测冬凌草在系统演化上可能属于较原始的种类.     

吊竹梅的核型研究

本文首次报道了吊竹梅(Zebrina pendula Schnizl.)核型。其体细胞染色体数目2n=24。具有2对中部着丝点染色体,3对近端部着丝点染色体和7对端部着丝点染色体,未见次缢痕和随体。染色体的长度比为2.58,臂比大于2的百分比为0.25,属Stebbins核型分类的“2B”型。     

川芎染色体制作及核型研究

本文对川芎的染色体制作方法进行了新的研究,并就川芎的染色体核型进行了分析,其结果显示:川芎的细胞染色体数为2n=22,其中中部着丝点染色体(m)为8对,近中部着丝点染色体(sm)为2对,近端部着丝点染色体(st)为1对,其核型公式为K(2n)=11X=22=16m+4sm+2st(SAT)     

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