草原植物群落物种多样性与生产力的关系

在草甸草原－典型草原－荒漠草原区域尺度上，第一性生产力（ｇ／ｍ＾２）与Ｓｈａｎｎｏｎ多样性指数呈“Ｓ”型曲线相关（ｒ＝０．９２７０，Ｐ〈０．００１），回归方程为Ｐ＝（１．３３７２－２０．７１００ｅ＾－Ｈ）＾－１（Ｐ、Ｈ分别代表等一性生产国为和Ｓｈａｎｎｏｎ多样性指数），反映群落物种多样性随着生产力增加而增加的速率不是均匀的，群落热值与生产力直接相关，与群落物种多样性也存有显的正相关关系，可以说，     

福建南亚热带雨林物种多样性与群落演替趋势分析

调查福建南靖和溪南亚热带雨林的３０个样地,共３０００ｍ＾２的群落面积,分析群落物种多样性特征,得到Ｍａｒｇａｌｅｆ丰富度指数Ｄ１＝０．９２５０,Ｓｈａｎｎｏｎ－Ｗｉｅｎｅｒ指数Ｄ２＝４．５４５４,Ｓｉｍｐｓｏｎ指数Ｄ３＝７．３３０５,ＰＩＥ＝０．９３００,均匀度Ｊ＝０．８６０３。探讨乔木层,灌木层物种多样性特征值,其变化趋势与群落总多样性一致。分析群落中１６个主要乔木种群的年龄结构,揭示群落乔木层     

耳穴电位反应病变的特异性

用微机实验系统研究了３２例正常人和４７例上消化道（食道、胃和十二指肠）病例的耳穴体表电位．结果表明，电位变量Ｊ具有区分病变的显著性，Ｐ＜０．０１．Ｊ的概率密度函数定量地描述反应病变的特性，获得临界指标Ｊ０和诊断评价指标的估值均数：特异度Ｓ－ｐ＝０．８４，敏感度Ｓ－ｅ＝０．８１，准确度ｒ－＝０．８２，约登指数ｒ∧－＝０．６５．耳穴电位可能具有较好的诊断应用前景     

论Opial—Beesack不等式

设ｆ（ｘ）∈ＡＣ［０，Ｈ］，产Ｆ（０）＝ｆ（ｈ）＝０，则有∫＾ｈ０｜ｆｆ＇｜ｄｘ≤１／２（ｈ／２）＾２／Ｑ（∫＾ｈ０｜ｆ＇｜＾ｐｄｘ）＾２／ｐ－２／ｑ｛｜ｆ＇｜＾ｐｄｘ）＾２－１／４（∫＾ｈ０｜ｆ；｜＾ｐｃｏｓ（２πｘ／ｈ）ｄｘ）＾２｝＾４／ｑ其中１＜ｐ≤２，Ｑ＝Ｐ／（Ｐ－１）．（２）显著比（１）优秀，实际上我国已证得更一般的结果。     

关于一维p-Laplacian奇异非线性边值问题的一点注记

讨论一维 ｐ  Ｌａｐｌａｃｉａｎ 奇异非线性边值问题（ｇ（ｕ′））′＝ － Ｋ （ｔ）ｆ （ｕ），　　０ ＜ ｔ ＜ １，ｕ（０） ＝ ０，　　ｕ′（１） ＝ ｃ正解的存在唯一性， 其中 ｇ （ｓ）＝ ｜ｓ｜ｐ－ ２ｓ， ｐ ＞ １， ｆ （ｕ ）在（０，＋ ∞）上是非负、非增的右连续函数．     

Cu（Ⅱ）钍试剂络合物吸附波

在ＮａＯＨ（０．０３２ｍｏｌ／Ｌ）介质中，钍试剂（Ｔｈｏｒｏｎ简记为Ｔｏｒ）给出一个吸附波，Ｅｐ＝－０．４８Ｖ（Ｖｓ·ＳＣＥ．），在该介质中Ｃｕ－Ｔｏｒ络合物给出一个很灵敏的络合物吸附波，Ｅｐ＝－０．５０Ｖ．峰电流与Ｃｕ（Ⅱ）的浓度在０．０４～０．７２μｇ／ｍＬ范围内成正比。研究了该波的特性与机理。     

级数∑ from n=1 to ∞ 1/n~p(0

张学军 《延安大学学报(自然科学版)》1999,(3)

退化羊草草原浅耕翻处理植物群落恢复演替的研究

对退化羊草草原浅耕翻处理后植物群落恢复演替动态的研究结果进行了报道．１１年的变化结果如下：处理群落种的丰富度增加．群落种多样性指数在１１年中的分布符合方程Ｄ＝２．４３－０．４９ｔ＋０．０４ｔ２,均匀性指数分布符合方程Ｅ＝１．４３－０．８５ｔ＋０．０２７ｔ２．群落密度和生物量均较处理前有显著的增加．羊草是造成群落密度和生物量变化的最主要种群,其重要值在１１年中分布符合方程Ｉ＝２０２．９－７８．４／ｔ－０．２２／ｔ２,表明在演替开始的前几年羊草恢复较快,随着时间的延长,增加变缓并保持在一定的水平．１１年的恢复过程可划分为羊草＋少年生杂类草、冰草群落（１—４年）;羊草群落（５—８年）和羊草＋冰草＋多年生杂类草群落（９—１１年）三个群落阶段．１１年的恢复处理群落并未恢复到原生羊草草原群落的水平、演替将继续进行     

部分取代苯定量结构-生物降解相关性(QSBR)研究

采用Ｃｈｅｍｓ３Ｄ中量子化学ＭＯＰＡＣ－ＡＭ１法计算了７种间苯胺类和８地苯酚的分子量高占有轨道能ＥＨＯＭＯ、分子最低空轨道能ＥＬＵＭＯ。用ＱＳＡＲ程序软件包查得分子体积Ｖｍ。结合分子连接性指数（＾３Ｘ,＾３Ｘ＾ｖ）对生物降解二级速率常数对数ｌｇＫｂ进行定量结构－生物降解相关性（ＱＳＢＲ）分析,通过回归分析,得到如下两个回归方程：ｌｇＫｂ＝－０．８３２－０．１１８Ｖｍ＋１．７４８＾３Ｘ＾ｖ,ｎ＝１５,Ｒ＾２＝０．８３２,ＳＥ＝０．５７７,Ｆ＝２９．７,ｐ＝０．０００。（１）ｌｇＫｂ＝０．１２４Ｖｍ＋１．７４９＾３Ｘ＾ｖ,ｎ＝１５,Ｒ＾２＝０．９９８,ＳＥ＝０．５５９１,Ｆ＝４１４８．９９,ｐ＝０．０００．（２）     

Co—Si合金膜的结构和磁光克尔效应

用射频磁控溅射在衬底温度（Ｔｓ）为 ４００℃和室温（ＲＴ）两种情形制备了Ｃｏ１－ｘＳｉｘ（０．０≤Ｘ≤０．３４）合金膜．Ｘ射线衍射结果表明在这些合金膜中出现了不同程度的ｈｃｐ（００２）取向．在室温下沉积的薄膜中，仅在ｘ＝０．０时有明显的ｈｃｐ（００２）取向．在４００℃下沉积的薄膜中，随着硅含量ｘ的增加，ｈｃｐ（００２）取向先是增强，继而在Ｘ＝０．３４时消失．相应与此的４００℃下沉积的薄膜的θｋ（Ｈ）、（Ｍ（Ｈ））回线在ｘ＝０．２３时出现了磁滞现象（Ｈｃ≈６４ｋＡ／ｍ），并且有大约２０％的比剩余克尔旋转（比剩余磁化强度）．同时，当Ｘ≤０．２３，硅的加入使得钻硅合金的克尔旋转在蓝光及近紫外区相比于纯钻来说有所加强，其值约为－０．３°～－０．４°．     

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.     

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。     

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.     

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.     

The Analects and the Moment in Peking——The influence of a Confucian education system on the personality formation,the way of thinking and the fate of the main characters

0.Preface China has long been boasting of its colorful and immense culture which comprises of Taoism,Confucianism and Buddhism.The interwoven influence among the religions on Chinese way of thinking,on the nation＇s behavior in their social life throughout the long history is beyond list.