鄱阳湖夏季淡水螺类群落结构

2007年4月-2007年7月对鄱阳湖的淡水螺类进行了较为广泛的定性定量采集。标本经整理,计有螺类26种,隶属7科15属。优势种为铜锈环棱螺（Bellamya aentginosa）、纹沼螺（Parafossarulus striatulus）和方格短沟蜷（Semislcospira cancellata）。平均生物量和密度分别为69．60g／m^2和110,27ind．／m^2。不同断面的Shannon—Wiener多样性指数H＇的范围在1,11—2．11;均匀度指数Jsww的范围为0,76—0．99。     

浙江岱山岛潮间带大型底栖动物的群落结构

分析了浙江岱山岛潮间带大型底栖动物的种类组成、数量分布和生物多样性等群落结构特征.该海域潮间带调查采获的大型底栖动物标本26种,其中软体动物16种,节肢动物6种,脊索动物2种,腔肠动物与环节动物各1种.潮问带大型底栖动物总平均生物量为279.22g/m2,总平均栖息密度为493 ind/m2.在各类群底栖动物中,平均生物量及密度都以软体动物居首位.岱山岛潮间带大型底栖动物的多样性指数、丰富度指数和均匀度指数的分布范围分别在1.176～2.115、0.833～1.897和0.565～0.801,平均值分别为1.490±0.429、1.223±0.465和0.654±0.104.岱山潮间带大型底栖动物ABC曲线分析表明底栖动物群落中度的污染或者干扰.     

南汇东滩围垦湿地大型底栖动物的种类组成、数量分布和季节变动

于2009年10月至2010年7月对南汇东滩围垦湿地大型底栖动物的种类组成、密度和生物量以及生物多样性进行了研究.结果显示,被围垦潮滩共鉴定大型底栖动物9种,自然潮滩有29种;围垦潮滩的年平均密度和生物量分别为130.80ind/m2和1.89g/m2,自然潮滩为49.21ind/m2和4.08g/m2;围垦潮滩的优势...     

大源湖虾类种类组成、时空分布及生物量估算

利用“蹦网”(pop-net)采样,调查了龙感湖一个湖汊—大源湖的虾类种类组成、空间分布,估算优势种类的生物量.在2002年冬季的31个采样点和2003年春季42个采样点中共采集到虾类2707尾,属于甲壳纲,十足目的2科5属.秀丽白虾(Exopalaemon modestus Heller)是大源湖虾类的优势种,占采样总数量的84.1%.根据水深分布特征和水生植被的分布格局,划分生境类型,苦草生境是各虾类分布最多的生境,冬季优势种秀丽白虾在苦草生境中的密度是8.14 ind/m2,生物量是1.59 g/m2.春季分别是2.98 ind/m2,1.04 g/m2.春季水深对虾类的分布影响较小,冬季虾类主要分布在深水区.表明水生植被是影响虾类分布的主要环境因子;在冬季,水深成为影响虾类分布的主要环境因子之一.     

连环湖卡拉白鱼放养场的浮游生物组成及水质分析

2004年9月、2006年10月和2007年1月分别调查和报道了连环湖（卡拉白鱼放养场）的浮游植物、浮游动物种类和数量以及水质理化特征：透明度为26cm,PH为8．99,含盐量为1．50mg／L,硬度为2．25mmol／L,碱度为11．64mmol／L,COD为19．16mg／L,水体主要离子含量和离子总量均值依照浓度高低排序为HCO;〉Na^＋和K^＋〉SO4^2-〉Cl^-〉Mg^2＋〉Ca^2＋,水型为带,湖泡属于富营养类型（N为0．7mg／L,P为0．33rag／L）．浮游植物5个门21个种属,其中绿藻门9个种属,数量810．25×10^4ind／L,占42．86％;硅藻门6个种属,数量323．58×10^4ind／L,占28．57％;其他藻类为蓝藻门、裸藻门和隐藻门,共有6个种属,数量64．82×10^4ind／L,占28．57％．浮游动物28个种属,其中轮虫14个种属,数量137ind／L,占50％;枝角类8个种属,数量54ind／L,占28．57％;桡足类6个种属,数量95ind／L,占21．43％．此外,对水质理化指标、营养元素和水域饵料生物的特点进行了讨论．     

姜黄素体外抗流感病毒H1N1、H3N2实验研究

目的：观察姜黄素提取物体外对流感病毒H1N1、H3N2的抑制作用。方法：用狗肾细胞（MDCK）观察姜黄素体外对A型流感病毒H1N1亚型、A型流感病毒H3N2亚型病毒的直接杀灭作用。结果：姜黄素最大无毒浓度为12．5g／L,对H1N1有效抑制浓度为6．25g／L,对H3N2有效抑制浓度为1．56g／L。结论：姜黄素提取物确有明显的抗H1N1、H3N2复制作用。     

甘肃天祝退耕还林不同配置模式生态功能的综合评价

本研究以天祝县为研究对象,分别在浅山区和脑山区的不同立地类型上各选择了5种退耕还林配置模式,通过对退耕还林不同配置模式的土壤持水量、团聚度、有机质含量、水解氯、速效磷、速效钾、物种多样性指数、均匀度等18个生态功能指标的综合评价结果排序,得出以下主要结论：,在浅山区,为模式C（青杨十枸杞）〉模式A（川赤芍）〉模式D（中国沙棘）〉模式B（紫花首稽）〉模式E（柠条）（223．08,〉193．20,〉189．87,〉155．40,〉139．89）。综合考虑生态功能,建议在阴坡推广应用模式C（青杨十枸杞）、阳坡推广应用模式A（川赤芍）。在脑山区,物种多样性指数、均匀度等18个生态功能指标的综合评价结果排序,为模式F（青海云杉）〉模式G（华北落叶松）〉模式J（青杨＋中国沙棘）〉模式H（白桦＋青海云杉）〉模式K（青海云杉＋中国沙棘）（246．49,〉238．02,〉199．75,〉195．85,〉195．29）。综合考虑生态功能,建议推广应用模式阴坡为模式F（青海云杉）、阳坡为模式J（青杨＋中国沙棘）。     

C_(1-x)M_x(M=Al,Si,x=0.1～0.3)复合材料的电化学嵌锂特性

用机械球磨法制备的C／Al、C／Si复合材料可作为镀离子电池的负极活性物质．研究结果表明，C_（0．7）Al_（0．3）和C_（0．8）Si_（0．2）（原子比）分别可以放出406mAh／g、和1039mAh／g的容量，远超过了原料碳的容量284mAh／g．经10次充放电循环、C_（0．7），Al_（0．3）放电容量衰退至251mAh／g．经20次充放电循环后C_（0．8）Si_（0．2）放电容量仍保持为749mAh／g．容量衰退主要是复合材料中包嵌入Al和Si部分容量衰退较快所致．     

某些积分算子解析函数的性质

设A表示单位圆盘U={z：｜z｜〈1,z∈c）内的单叶解析函数族,定义A的子族MDg（α,β）={f（z）∈A：Re（z（f＊g）＇（z）/（f＊g（z））〈β｜（z（f＊g）＇（z）/（f＊g（z）-1｜＋α,g（z）∈A}这里α〉1,β≤0,介绍3类积分算子函数Fn（z）,G（z）,In（z）,利用解不等式的技巧和解析函数理论,对它们的性质进行探究．     

一种2，2’-联咪唑化合物的水热合成和晶体结构

通过溶剂热反应法合成了一种2,2’-联咪唑化合物（H30）（2,2’-biimidazole）C1（1）,并对该化合物进行了X-射线单晶结构分析。标题化合物属于单斜晶系的C2／m空间群,晶胞参数如下：a-16．5760（4）,b=11．5546（4）,c=4．6180（1）A,β=96．382（2）°,y=879．00（4）A^3,C6H9C1N40,Mr=188．62,Dc=1．425g／cIn3,S=1．022,／a（MoKa）=0．393mm-1,F（000）=392,R=0．0454和wR：O．1298。该化合物具有二维超分子结构。该化合物能够发出蓝色荧光。     

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