缩热近似下在物质中三代中微子振荡几率

应用微子振荡的基本理论,推导出绝热近似下在物质中三代中微子的质量平方矩阵Ｍ＾２的本征值,物质中的中微子混合矩阵,物质中的中微子振荡几率。     

长基线中微子振荡实验的参数计算

本文应用中微子振荡理论，计算了长基线中微子振荡实验的几率和几率为确定值时的ｓｉｎ２θ和Δ之间的允许区情况以及中微子在物质（地球）中的传播轨迹。     

在物质中长基线中微子振荡实验的非量子力学效应

研究了在物质中长基线中微子振荡实验的非量子力学效应，计算了非量子力学效应对中微子振荡几率和微子混合参数的允许区的影响。     

关于矩阵迹的几个不等式

设Γ＿１为对角线元素按减序排列的非负对角形矩阵，Ｕ＿１是酉矩阵，ｉ＝１，２，…，ｍ，则有当Ａ＿１，Ａ＿２．…，Ａ＿ｍ为半正定Ｈｅｒｍｉｔｅ矩阵时，有其中Γ＿１＝ｄｉａｇ（σ＿１（Ａ＿１），σ＿２（Ａ＿ｉ）．……σ．（Ａ＿ｉ））．ｉ＝１，２．…，ｍ。     

Dirac中微子与第一类振荡

本文计算了三代中微子的代间跃迁几率,指出了 CP 破坏因子对这种跃迁几率的影响;考察了 K-M 矩阵的混合角所应遵从的条件,得出结论:有质量的 Dirac 中微子的存在将自然导致中微子的代间振荡--第一类振荡。     

原子,分子与固体表面散射的S矩阵元

把Ｓｕｄｄｅｎ近似应用于原子、分子与固体表面的散射，通过引进变换矩阵使分子与表面散射的Ｓ矩阵及势能矩阵成对角；指把数项ｅｘｐ［ｚｉｂ（Ｒ）］用基矢ｅｘｐ（ｉＧｍｎＲ）展开，经变换得到原子与表面散射的Ｓ矩阵，此矩阵仅需单一初态的贡献，能使计算过程大大简化．     

中微子在物质中的振荡几率的精确解

给出一种求三代中微子在物质中振荡几率精确解的方法．     

一种充甲烷无烟煤导电特性的研究

研究了四川白皎无烟煤电导率与甲烷压力和外加电压的关系。煤吸附甲烷后其交流和直流电导率都将增大。在直流电场中,煤的电导率σ与外加电压Ｕ和甲烷压力ｐ 成正比,其双变量方程为σ（ｐ,Ｕ） ＝ １ ．４６４ ＋ ０ ．７０５ｐ ＋ ２．３５５ ×１０－ ３ Ｕ＋ ２ ．９３０ ×１０ － ３ Ｕｐ 或σ（ｐ,Ｕ） ＝ １ ．４８１ｅｘｐ（０ ．３６９７ｐ） ＋ ２ ．５４８ ×１０ － ３ Ｕｅｘｐ（０ ．６８５８ｐ） ;在交变电场中,电导率随甲烷压力的升高而增大,但与外加电压值无关。     

中微子振荡中的几何相位和CP违反

该文首先探讨了模型化的中微子在物质中振荡和混合的分析解,然后让中微子的CP违反相位旋转360°获得中微子振荡和混合的几何相位,发现几何相位随能量的振动具有非对称性几何结构.几何相位是描述中微子传播过程中内禀属性,故这种非对称结构起源于中微子振荡和混合的CP违反现象.因此,几何相位为中微子传播过程中的CP违反现象提供了线索.     

大亚湾发现新的中微子振荡将有助破解宇宙中“反物质消失之谜”

近日，大亚湾中微子实验室发现了一种新的中微子振荡，并测量到其振荡几率。这一重要成果是对物质世界基本规律的新认识，对中微子物理未来发展方向起到了决定性作用，并将有助于破解宇宙中“反物质消失之谜”。     

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.     

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.     

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.     

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.     

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.     

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.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that