武威绿洲区不同生物型花绒寄甲的越冬习性研究

在武威绿洲区开展花绒寄甲越冬试验，通过入冬前将不同生物型的花绒寄甲成虫分别投入到土壤、落叶、木段、树木上，使其以自然方式进行越冬。翌年春，对越冬成活率进行调查。同时，调查投放自然生长繁育1年后花绒寄甲种群越冬存活情况。试验表明：不同生境中让其自然越冬，入冬前投入树木上的花绒寄甲成虫越冬存活率最高为17.49%，其中松褐天牛生物型、星天牛生物型和光肩星天牛生物型越冬存活率分别为12.37%、15.09%和25.01%;3种不同生物型花绒寄甲平均越冬存活率为12.65%，其中光肩星天牛生物型花绒寄甲越冬存活率为17.37%，抗寒能力优于另2种生物型。经过近一年自然生长繁育的花绒寄甲越冬存活率为17.28%，比入冬前投入花绒寄甲成虫越冬存活率高，具有较好的抗寒性强。试验表明：光肩星天牛生物型花绒寄甲在武威绿洲区越冬抗寒性较好，应在防治中优先使用；自然生长繁育种群，形成了一定区域环境适应性。通过研究为进一步利用花绒寄甲有效控制光肩星天牛危害提供了理论支持。     

浙江泰顺北草蜥越冬前后的食性分析

浙江泰顺北草蜥越冬前后摄入的食物均为无脊椎动物，分别属于软体动物和节肢动物，涉及12目30余科．成体越冬前主要摄入蝉科昆虫、越冬后为鳞翅目幼虫，幼体越冬前主要摄入叶甲科昆虫、越冬后为地蛛科蜘蛛．食物多样性指数H值，越冬前成体和幼体分别为4．028和3．986，越冬后成体和幼体分别为3．994和3．483．越冬前后成体和幼体的营养生态位重叠度小于0．55．     

东乡野生稻（Oryzarufipogon）在武汉地区越冬性能的观察

对东乡野生稻的越冬性能进行了连续２年的观察，结果表明：东乡野生稻的稻蔸能在武汉地区安全越冬，翌年春季再生苗从地表以下的茎节长出，越冬再生植株与种子实生植株相比并无差异。     

稻水象甲的发生规律、危害及防治

经过两年的试验和调查研究，明确了稻水象甲的越冬场所，发生规律，危害及其综合防治措施，探明了稿水象甲的发生与气候条件．越冬场所及载培管理的关系，在此基础上，提出了以越冬虫及新一代成虫防治为辅的防治措施。2年累计防治面积4333hm^2，防效在90％以上。     

中华秋沙鸭弋阳越冬区生态因子的研究

2000年至2005年，通过对江西省上饶市弋阳越冬区中华秋沙鸭的数量变化和越冬栖息地生态因子的研究，结果表明，中华秋沙鸭种群数量已明显减少，在越冬区的生活不稳定，常沿河流逐步迁徙，沿途常作短暂的停留，越冬区范围分布散。越冬栖息地生态因子的改变和人为干扰是其种群数量下降的主要原因。食物缺乏，气温变化与其种群数量的改变有密切关系。     

葡萄幼树防寒越冬覆膜技术措施

利用覆膜技术措施适用于当年新植葡萄树苗木防寒越冬，能有效的提高苗木的越冬能力，起到调节温度，防止风抽干枝蔓，减少水分蒸发。适用于寒冷地方葡萄苗木安全越冬。     

短额负蝗的饲养

对短额负蝗的饲养方法进行了研究，包括卵的获得、卵的越冬保存、卵化及室内外饲养。卵的越冬保存采用3种方法，（1）将卵保存于花盆土中，室温下越冬；（2）卵在室外土中越冬；（3）将卵保存在4℃的冷藏箱中越冬。于第二年3月中旬将卵转入25℃恒温箱中进行孵化，孵化率分别为99．2％、98．5％和92．1％。3种方法无明显区别。孵化后以天然饲料饲养。     

暖水性鱼类鱼种越冬技术

暖水性鱼类必须生活在一定水温的水体中才能安全越冬，利用工厂余热、塑料大棚、地热水、小型锅炉等作为暖水性鱼类的越冬方式均为实用有效，同时，在越冬期间，要根据暖水性鱼类的生理生长特点，加强饲养管理和病虫害防治。     

洪湖越冬水禽的研究

依据１９９６年８月至１９９７年５月对洪湖越冬水禽的调查及有关资料，分析了在湖区越冬水禽历年来种群数量的递减及丰富物种向小型化、单一化演变的趋势及原因，提出了相应的措施。     

甘肃陇东玉米螟发生消长因素

甘肃陇东影响玉米螟发生程度主要因子是：越冬基数，6月上旬至7月中旬的降水，天敌二因素。越冬基数是发生的依据，降水对发生程度有决定性的作用，天敌对发生数量有一定的抑制作用，并为生物防治提供了依据。     

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.     

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