多Λ超核基态性质的研究

依据多Λ超核在高能重离子碰撞或天体物理中实现的可能性,以Ca为例,用相对论连续谱Hartree-Bogoliubov理论研究了系统的基态性质,包括每重子结合能、重子均方根半径和超核物质半径以及单粒子能谱等。研究表明,随着超子数目的增加,超核的每重子结合能和超子均方根半径变化趋势平缓,在1500ΛCa等一些超核内超子2s1/2和1d5/2能级排列有明显的反转,丰质子区和总核子数不变的多Λ钙超核滴线所对应的最大超子数分别为6和22。     

在折叠模型下对超核Λ^13C基态结构的研究

用集团结构模型、折叠模型和少体理论方法，从基态结合能和集团间的均方根半径方面研究了Λ^13C超核的基态结构，计算结果与实验值符合较好．     

在折叠模型下对超核_Λ~(13)C基态结构的研究

用集团结构模型、折叠模型和少体理论方法,从基态结合能和集团间的均方根半径方面研究了13ΛC超核的基态结构,计算结果与实验值符合较好.     

在折叠模型下对超核13ΛC基态结构的研究

用集团结构模型、折叠模型和少体理论方法,从基态结合能和集团间的均方根半径方面研究了13ΛC超核的基态结构,计算结果与实验值符合较好.     

Λ超核结构

简要回顾了Λ超核结构研究的实验和理论研究进展，并介绍了超子-核子相互作用和对单Λ超核的描述，以及奇特Λ超核现象的最新研究成果，包括超核的巨中子晕、超子晕等。     

在折叠模型下对双Λ超核(_(ΛΛ)~6He)和(_(ΛΛ)~(10)Be)基态结合能的计算

在集团模型和少体理论基础上,采用折叠模型方法和相同的Λ-Λ势和Λ-α势,给出了各集团间的相互作用势,并计算了双Λ超核Λ6ΛHe和Λ10ΛBe的基态结合能和集团间的均方根半径,得到的结果与实验值符合较好.     

在折叠模型下对双Λ超核6ΛΛHe和10ΛΛBe基态结合能的计算

在集团模型和少体理论基础上,采用折叠模型方法和相同的Λ-Λ势和Λ-α势,给出了各集团间的相互作用势,并计算了双Λ超核6ΛΛHe和10ΛΛBe的基态结合能和集团间的均方根半径,得到的结果与实验值符合较好.     

在折叠模型下对双Λ超核A6 ΛΛ He和10 ΛΛ Be基态结合能的计算

在集团模型和少体理论基础上，采用折叠模型方法和相同的Λ—Λ势和Λ—α势，给出了各集团间的相互作用势，并计算了双Λ超核A6 ΛΛ He和10 ΛΛ Be的基态结合能和集团间的均方根半径，得到的结果与实验值符合较好．     

对超核6ΛΛHe,9ΛBe,10ΛΛBe和13ΛC基态结构的研究

用集团模型和少体理论研究超核ΛΛ6He,Λ9Be,Λ1Λ0Be和1Λ3C的基态结合能.采用的α-α势符合低能α-α散射实验,Λ-α势用Λ-N势及α粒子密度分布函数得到的,Λ-Λ势通过拟合Λ1Λ0Be基态结合能的实验值而得到的.尝试在超核ΛΛ6He,Λ9Be,Λ1Λ0Be和1Λ3C中引入Λ5He的结构,计算这四个超核的基态结合能,得到了一些合理的结果.     

统一框架下对超核5ΛHe,9ΛBe,6ΛΛHe和10ΛΛBe基态结合能的研究

用α集团模型和少体理论方法研究了超核5ΛΗe,9ΛΒe,6ΛΛΗe和10ΛΛΒe的基态结合能.所采用的α-α势符合低能α-α散射实验及8Be的基态共振能量,Λ-α势是用Λ-N势及α粒子密度分布函数拟合5ΛΗe的基态结合能的实验值得到的,Λ-Λ势是通过拟合6ΛΛΗe基态结合能的实验值而得到的.用一组α-α势,Λ-α势和Λ-Λ势统一描述这4个超核的基态结合能并得到了合理的结果.     

W.K.B近似和δ势垒近似下_∧~(238)U超核裂变中∧超子能级的计算

本文用高斯势垒和W.K.B近似方法,以及&势垒近似方法分别计算超核裂变过程中的∧超子的能级。     

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.     

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.     

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.     

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.     

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.