毛细现象辨析

经过反复观测,我们发现毛细管液柱上升最大高度在液体表面张力α及温度确定之后,还与管壁的湿润或干燥有关,当管长小于最大高度时,液柱并不上升到管口,通常总在管口之下数毫米至十分之几毫米。“三力说”已不能解析毛细现象的机制,而“四力说”却能较完满解析之。在。三力说”提出(1)α,(2)β(固体附着层表面张力),(3)f(固液分子间附着力)的基础上提出还存在第四种力,y(固汽附着层的表面张力),它与液体的蒸汽压强有关。本文根据“四力说”对毛细管液柱上升或下降的动力及其能量的转化问题作了定量分析且与实验吻合,反过来证明了“四力说”的正确性。     

α-Bloch型空间上MФCφD算子的有界性及紧性

在文献[1]中,Kumari R和Sharma A讨论了α≥1,β〉0时函数空间Bα到Bβ上的线性算子CφD的有解性及紧性.在此基础上,本文讨论了α〉0,β〉0,函数空间Bα到Bβ上的加权复合微分前置算子MФCφD.并给出了使得MФCφD是有界算子或紧算子的充要条件,推广了Kumari R和Sharma A的结果,旨在更好地了解α-Bloch型函数空间的性质.     

用线性算子定义的亚纯p叶函数类

利用线性算子Dα定义了亚纯多叶函数的新子类Tp,α(;βA,B)和Tp ,α(;βA,B),将解析函数的邻域概念应用到亚纯多叶函数上,探讨了这两个函数类的性质,得到函数f(z)=z-p ∑∞n=1anzn-p在类Tp,α(;βA,B)中的充分条件,并由此研究了其他性质.利用类Tp ,α(;βA,B)的定义得到了f(z)=-z p ∑n∞=p an zn在类Tp ,α(;βA,B)中的充要条件.     

半正定矩阵广义Schur补的几个不等式

利用半正定矩阵的性质和矩阵Moore Penrose广义逆的特性,研究了半正定矩阵乘积及Hadamard积的广义Schur补的L wner偏序问题,得到了关于广义Schur补的若干不等式.对半正定矩阵A和B,给出了其Hadamard积广义Schur补与A/α B/α的关系,并对形如C AC(其中A半正定)的矩阵乘积,证明了(C AC)(β′)≥C (β′,α′)A/α·C(α′,β′)及(C AC)/α≤C /α·A(β′)·C/α.     

BO分子电子结构的理论研究

本文采用量子化学从头计算方法,通过选取20个STO-4GD_2基函数,在IBM—PC微机上,首次计算出了BO分子X,A,B,C电子态的结构参数.并计得该分子α,β和γ带系的振子强度分别是0.0019,0.058和0.0057。     

关于S_p~*(A,B)的偏差性质和系数

<正> S_p(α,β)是文[2]中讨论过的函数类,它包含在S_p~*(A,B)中,S_p(α,β)=S_p~*(β,—αβ)。 本文我们将给出S_p~*(A,B)的表示定理;讨论S_p~*(A,B)的偏差性质,另外,对S_p~*[A,B]的偏差性质,系数不等式,端点,以及对分式微分和分式积分的应用问题进行比较详尽的研究。     

单叶调和函数及其反函数为调和拟共形的充要条件

研究平面上具有形式f(z)=A[αz+β+log(1-exp(-αz-β))-log(1-exp(-αz-β))]+B的保向单叶调和映照,其中A,B,α,β是常数且满足条件A≠0,α≠0.给出了定义在椭圆和上半平面上的单叶调和函数及其反函数都是调和拟共形映照的充要条件,并推广到一般的单连通区域上.     

含幂等元的环上的(α,β)-导子的刻画

设■是含有单位元Ⅰ的环且■包含非平凡幂等元P,α,β:■是自同构。证明了如果线性映射δ:■满足对任意的A,B∈■且AB=P,有δ(AB)=δ(A)β(B)+α(A)δ(B),则δ是■上的(α,β)-导子。     

算子代数上的(α, β)-导子的空间实现性

研究算子代数上的(α,β)-导子的空间实现性.设(d)是B(X)的子代数,α和β是B(X)上的自同构,δ是从(d)到B(X)的(α,β)-导子.如果δ是传递的、自反的(α,β)-导子,则δ是拟空间实现的,也就是说,存在一个稠定义的闭线性算子T:Dom(T)→X,使得β(A) (Dom(T)(∈) Dom(T)和δ(A)x＝(Tβ(A)-α(A)T)x((∨)A∈(d),x∈Dom(T))成立.如果δ是传递的、自反的有界(α,a)-导子,而且(d)的范数闭包(d)包含一个极小左理想,则δ是空间实现的,而且其实现元是惟一的.具体地说,存在T∈B(X),使得δ(A)＝Tα(A)-α(A)T对任意的A∈(d)都成立,而且δ的实现元T在相差一个常数因子的条件下是惟一的.     

N维等价向量组中的向量替换

本文证明了两个n维等价线性无关的向量组A（α1，α2，…αm）和β（β1，β2，…，βm）的性质，对A组中的任一向量αj，在β组中至少可以找到一个向量βi替换αj，使α1，…，α－1，β1，αj＋1，…，αm与向量组B等价。同时指出了这种替换的条件。     

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.     

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.     

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.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

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.