花生(花育16)地膜覆盖栽培的生长动态

对花生(花育16)地膜覆盖栽培、荚果产量在6 378.8 kg.hm-2水平下植株生长动态进行了研究。结果表明:根鲜重、叶鲜重及干重、叶面积以出苗后41~60 d增长最快;根干重、茎枝鲜重及干重、茎枝长度、主茎高度、果针鲜重与干重、荚果鲜重、荚果数、全株鲜重及干重均以出苗后61~80 d增长最快;荚果干重以出苗后81~100 d增长最快;出苗后1~80 d,植株生产的干物质主要分配在叶、茎枝中,此后逐渐转入以荚果为主。     

青杆林和山杨林下植物叶结构特征及其与叶干重的关系

阴暗针叶林下日平均光强为明亮阔叶林下日平均光强的五分之一;青杆林内光强为林窗下的四分之一,约20种林下植物的叶结构参量表明,随光辐射增加,叶片加厚,叶肉细胞相对体积增大,单位叶面积干重(D)在种内比较,其与叶厚度成正相关;而在种间比较,其与单位叶面积的栅栏细胞表面积的关系符合方程:D=0.274/(1 e~(3.702-0.369)(P-2) 0.14),(R=0.865,P<0.05)。而D与单位叶干重的叶绿素总量(CW)则呈显著负相关:D=0.582-0.0389Cw,(r=-0.8851,P<0.001)。     

银杏雄株叶片类黄酮含量及其相关因子的变化研究

采用叶源枝类、部位及采叶期三因子试验设计,连续３ａ每年７－１１月每隔３０ｄ采摘叶片滴定银杏雄株的单叶面积、干物质含量、比叶鲜重、比叶干重和类黄酮含量。结果表明：银杏ＳＬＦＷ与类黄酮含量的季节变化表现出相同的趋势,产在１０月份了大值;长枝叶片的干物质含量及类黄酮含量显著高于中,短枝;１ａ生枝叶片的比叶鲜重,比叶干重及单叶面积明显大于多年生枝;不同采叶期的叶片干物质含量、比叶鲜重、比叶干重和类黄酮含量差异显著或极显著,不同枝类叶片在各个生长发育期的干物质含量不同。     

甘肃小陇山林区油松人工林单木生物量的研究

在小陇山林区设立油松典型样地39块,采伐标准木317株进行生物量调查,分别测定标准木枝、叶、干、皮、根等各组分干重生物量及总生物量,计算各组分生物量占总生物量的比例。分析了来分析测树因子对于生物量贡献的大小,通过回归分析建立用测树因子估测各组分生物量及总生物量的回归模型,从而简化生物量的测定。     

青杨雌雄植株小枝各结构间的相关关系

为揭示雌雄异株植物雌雄个体在小枝内部结构间的相互关系,作者以河北省小五台山天然青杨(Populus cathayana)成树的当年生末端小枝为研究对象,用偏相关分析的方法分析了小枝大小和小枝上叶片各性状之间的相互关系.研究发现:1)青杨雌雄植株在叶与小枝干重、叶与小枝横截面积、叶与叶柄方面的各指标间均呈正相关.2)雌株的叶数量与单叶干重显著负相关,但雄株的相关性不显著.研究结果表明了雌株在小枝水平上表现出叶面积的增长速率高于雄株的功能分化,反映出雌株为了满足繁殖成本快速积累的需要而在叶片生长方面出现的功能适应.     

广西海岸白骨壤红树植物地上部生物量的相关分析

1992年3月在广西北海半岛大冠沙白骨壤群落研究了白骨壤植株的测树因子跟地上部生物量间的相关性。结果显示,由于白骨壤植株形态多变,树高通常小于2.0m,树高在估算地上部生物量时并不重要。植株的生物量可较好地用下述方程估算:茎:W=0.8496-0.4429D+0.0748D~2枝:W=-2.2744+1.5595e~(-H)+1.0590C+0.0606D~2叶:W=0.0180D~(2.1294)地上部分生物量:W=-2.4386+0.0081H/LnH+1.4796C+0.0991D~2式中 H 为树高(m),D 为基茎(cm),C 为冠幅(m~2),W 为干重(kg)。文中还给出了利用这些方程估算群落生物量的范例。     

不同生境广玉兰的花枝性状及开花特性

为探明广玉兰的花器官对生境变化的生态适应性表现特征,选取上海师范大学奉贤校区4种生境类型,包括阳生湿地、阳生洼地、阴生平地、半遮荫平地的广玉兰一年生花枝为研究对象,对比了不同生境类型花枝形态性状及生殖分配比、花粉活力、开花物候的特征.主要结果如下：半遮荫平地及阴生平地生境条件下的一年生花枝单叶面积、比叶面积均高于阳生生境;阴生平地的一年生花枝的长度、花直径及宽度相较于其他3种生境,数值更大,呈现出花大叶大,枝条伸展度更高的特征,观赏性极佳.在4种生境中的花干重差异不显著,叶干重和枝干重均存在显著性差异（方差参数F为4.38和3.31,显著性检验指数p<0.05）.半遮荫平地生境条件下叶干重极显著高于其他生境（F=4.48,p<0.01）,而从花枝各器官干重的分配看,阳生湿地和阴生平地分配给花的有机物质更高,含水率呈现花大于叶、叶大于茎的趋势.阳生湿地生殖分配比极显著高于其余3种生境（F=4.48,p<0.01）.不同生境花粉活力存在显著性差异（F=19.00,p<0.01）,其中阳生洼地为20.79%,半遮荫平地为7.14%.半遮阴平地生境条件下生长的植株花期开...     

比利时杜鹃生物量调查

对比利时杜鹃的含水量及生物量进行了研究,结果显示叶的含水量最大,茎、根次之,但全株含水量变化不大,约占60%;根部的含水量及生物量变化最大;R/S比值逐年增大,但还是较小。此外,本文还采用相关分析及建立生物量一元线形回归、多元线性回归、非线性回归等回归方程,确定预测生物量的最佳回归模型。     

红海榄幼苗的形态特征及其生物量

对红海榄１年生幼苗的株高、茎高、基径、节数、叶数、根长、根高和叶面积等主要形态因子以及根、胚轴、茎、叶等器官的生物量进行了测定。根据实测的数据,采用一元线性、多元线性和非线性回归进行拟合,得到３４个红海榄幼苗主要形态因子和生物量的回归模型。     

云南箭竹地上部分生物量模型研究

对云南省永仁县白马河林场云南箭竹(Fargesia yunnanensis)秆、枝和叶片含水量及生物量进行了调查。结果表明：云南箭竹叶片的含水率最高,秆的最低;在地上部分各器官的生物量分配中,秆所占比例最大,可达60.31%~65.34%,枝次之(19.28%~21.87%),叶(15.11%~1782%)所占比例最少。通过回归分析探讨了云南箭竹各变量的相关性,并对其各器官的生物量及秆高与胸径和地径进行模型拟合。其中秆、枝和叶的生物量与胸径的拟合方程分别是：WC=0.318D1.753,WB=0.135D1.412,WL=0.140D1.216。应用上述相关数学模型估算不同地理种源云南箭竹各器官生物量。通过对胸径、地径和生物量的比较,认为鸡足山的云南箭竹长势最好。     

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