广西水,旱,蝗灾害及其综合治理对策

较全面系统地阐述了我区近３８０年来水、旱、蝗三大自然灾害的发生历史和现状，分析了这些自然灾害的形成原因及其相互关系，认为：季风气候异常是导致旱、涝灾害的主导因素；地形、地貌的差异是造成区域性旱、涝灾害的重要因子；生态环境亚化及河流水位暴涨暴落是引起旱、涝灾害的直接原因；农田水利基本建设年久失修促使农田旱涝调节能力减弱。     

广西水、旱、蝗灾害及其综合治理对策

较全面系统地阐述了我区近３８０年来水、旱、蝗三大自然灾害的发生历史和现状，分析了这些自然灾害的形成原因及其相互关系．认为：季风气候异常是导致旱、涝灾害的主导因素；地形、地貌的差异是造成区域性旱、涝灾害的重要因子；生态环境恶化及河流水位暴涨暴落是引起旱、涝灾害的直接原因；农田水利基本建设年久失修促使农田旱涝调节能力减弱。论证了旱、涝灾害与蝗灾之间的相互关系，认为：在东亚飞蝗未彻底根治之前，旱、涝灾害与自然地理环境等生态因素的相互作用和互相配合，是造成飞蝗大发生的重要根源．提出以下综合治理对策：（１）加快河流治理．消除旱、涝灾害；（２）积极造林绿化，维护生态平衡；（３）兴修农田水利，发展生态农业。实现上述三项措施后，我区水、旱、蝗三大自然灾害可得到彻底根治。     

天津的旱涝灾害及其影响

依据天津旱涝灾害的历史和大量气象资料的统计与分析，总结概括出了天津旱涝灾害的分布规律，并从气候、地形、河流状况等方面简要地分析了天津旱涝灾害的形成原因，及其对工农业生产和人民生活的影响。     

天津的旱涝灾害及其影响

依据天津旱涝灾害的历史和大量气象资料的统计与分析，总结概括了天津旱涝灾害的分布规律，并从气候、地形、河流状况等方面简要地分析了天津旱涝灾害的形成原因，及其对工农业生产和人民生活的影响     

重庆市旱灾及洪涝灾害研究

本文总结了重庆城区近百余年来的旱涝变化,详细分析了重庆市干旱灾害、洪涝灾害的分布、特点、形成以及发展的机制,在此基础上,从气候背景、环流特征、地形以及人文因素方面分析了其产生的原因。最后针对重庆市旱涝灾害减灾防灾工作所存在的问题,相应地提出了重庆市旱涝灾害的减灾防灾对策。     

湖北省近代洪涝灾害的特点及其成因分析

以史料为据．对湖北省近代以来洪涝灾害的特点及其形成原因作了系统性的总结分析．研究表明：湖北省近代洪涝灾害是自然孕灾环境、人类致灾活动因子及其脆弱的承灾体共同作用的结果．自然孕灾环境孕出了“多灾”的特点,人类致灾活动直接引起“灾害频发”,而脆弱的承灾体则导致“灾情严重”．     

衡阳旱涝灾害的形成及防治措施

利用１９６０年到１９９４年的气候资料进行统计分析，得出了衡阳旱涝灾害出现的规律；阐述了旱涝灾害的成因；提出了防治旱涝灾害的措施。     

关中地区旱涝灾害研究

采用关中地区渭南杨刘村、西安肖家村和宝鸡九龙泉3个观测站20世纪50－70年代气温、降水资料和90年代旱涝灾害资料，分析了该地区旱涝灾害的类型、发生规律及其与降水、气温之间的关系。结果表明，春旱、春夏连旱、秋旱、夏涝、夏秋涝是关中地区主要的旱涝灾害类型；旱灾的发生具有10年左右的周期，涝灾的发生具有5年左右的周期；50－70年代关中地区涝灾偏多，气温偏低；冬季偏寒常易出现来年夏旱，冬季偏暖常易出现来年夏涝；90年代的旱灾增多，尤以秋旱为特征。     

民国时期云南自然灾害探析

民国时期,云南自然灾害频发,尤以涝、旱、震、疫、雹等灾害发生的次数为多。与其他时期和其他地区相比,具有灾害类型众多、灾害次数频繁、成灾面相对较小、存在区域差异等特点。     

河北省旱涝灾害及其成因研究

据明代以来有关资料研究,河北省旱涝灾害频繁发生,旱灾重于涝灾,旱灾是影响该省农业生产的主要自然灾害之一。造成旱涝灾害的因素以及自然因素为主,人为因素加剧了灾害的严重程度。为今后的防灾抗灾提供了科学依据。     

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.     

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.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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-