荧光性二氯苯腈类除草剂的合成与性能(英文)

用 ３硝基２,６二氯苯腈（ Ｎ Ｄ Ｃ Ｂ）经 Ｓｎ Ｃｌ２ 还原得到的产物 ３氨基２,６二氯苯腈（ Ａ Ｄ Ｃ Ｂ）与磺酰氯反应合成了一种具有生理活性的化合物 ５ Ｎ, Ｎ二甲氨基萘磺酰（３腈基２,４二氯）苯胺（ Ｄ Ｃ Ｂ Ｆ）,研究了其对 Ａ． ｌｏｎｇｉｐｅｓ的细胞外基体聚糖的合成的抑制作用,发现此化合物具有与其母体 Ｄ Ｃ Ｂ 类似的功效．     

HPMBP和HAP协同萃取部分Ln（Ⅲ）

研究了 １苯基３甲基４苯甲酰基吡唑酮５（ Ｈ Ｐ Ｍ Ｂ Ｐ）和４羟基安替比林（ Ｈ Ａ Ｐ）的氯仿溶液从硝酸介质中对 Ｌｎ（Ⅲ）（ Ｌｎ＝ Ｌａ, Ｐｒ, Ｎｄ, Ｓｍ , Ｇｄ）的协同萃取;通过斜率法确定了萃合物的组成为 Ｌａ２（ Ｐ Ｍ Ｂ Ｐ）６（ Ｈ Ａ Ｐ）３;考察了萃取剂浓度和溶液酸度对萃取机能的影响;测定了 Ｌａ３＋ , Ｐｒ３＋ , Ｎｄ３＋ , Ｓｍ ３＋ , Ｇｄ３＋ 的半萃取ｐ Ｈ 值分别为４．１２,３．６９,３．５４,３．５０,３．４２,合成了 Ｈ Ｐ Ｍ Ｂ Ｐ和 Ｈ Ａ Ｐ对 Ｌａ３＋ 的协同萃取配位化合物 Ｌａ２（ Ｐ Ｍ Ｂ Ｐ）６·（ Ｈ Ａ Ｐ）３。     

借IAP-4S和高效液相色谱分离和测定铱和铑（英文）

借离子对反相高效液相色谱分离了铱（Ⅳ）和铑（ＩＩＩ） 的２（２咪唑偶氮）苯酚４磺酸（ＩＡＰ４Ｓ）螯合物,并于５６０ ｎｍ 波长处检测之．研究了Ｉｒ（ Ⅳ）和Ｒｈ（ Ⅲ）ＩＡＰ４Ｓ螯合物分离的最宜条件．于Ｎｕｃｌｅｏｓｉｌ Ｃ８ 柱上,用含７．５×１０－３ ｍｏｌ／ＬＫＨ２ＰＯ４Ｎａ２ＨＰＯ４缓冲剂（ｐＨ７．５） 和５．５ ×１０－３ ｍｏｌ／Ｌ溴化四丁基铵的甲醇水（４０：６０,ｖ／ｖ） 作流动相,流速为０．８ ｍＬ／ｍｉｎ． 检测限为１．３ ｎｇ 铱和１．５ ｎｇ 铑．     

庆阳乌蓼中黄酮类化合物的研究

从甘肃庆阳产中草药乌蓼中首次分离得到了５个黄酮类化合物：５７二羟基６７二甲氧基黄酮（１）,５７二羟基黄酮（２）,５７二甲氧基４′羟基黄酮（３）,桑色素７ＯβＤ葡萄糖甙（４）,５羟基３′甲氧基双氢黄酮７Ｏ芸香糖甙（５）．     

一羰基二氢三(三苯基膦)合钌催化二茂铁乙烯与取代苯乙酮反应的研究

钌络合物ＲｕＨ２（ＣＯ）（ＰＰｈ３）３ 能够催化芳香酮邻位碳氢键与烯烃的加成反应。在ＲｕＨ２（ＣＯ）（ＰＰｈ３）３ 的催化下, 研究了二茂铁乙烯与取代苯乙酮的反应。二茂铁乙烯分别与苯乙酮、对甲氧基苯乙酮和对氯苯乙酮发生加成反应, 得到了β（２乙酰苯基）乙基二茂铁（ Ⅰ） 、β（２乙酰基５甲氧基苯基） 乙基二茂铁（Ⅱ） 和β（２乙酰５氯苯基）乙基二茂铁（ Ⅲ） ; 而二茂铁乙烯与对硝基苯乙酮、间硝基苯乙酮、对氨基苯乙酮和间氨基苯乙酮不反应。化合物Ⅰ～Ⅲ为新的二茂铁衍生物, 它们的结构经元素分析、核磁共振氢谱和质谱得到表征。     

3-[(4′-羧基)-2′-喹啉基]酚酮的合成及溴代和偶联反应

报道了 Ｐｆｉｔｚｉｎｇｅｒ 喹啉合成法在卓艹 酚酮领域中的首次应用． ３乙酰基卓艹酚酮（Ⅰ）在氢氧化钾存在下与靛红反应,得到了喹啉基取代的卓艹 酚酮化合物 ３［（４′羧基）２′喹啉基］卓艹 酚酮（Ⅱ）;化合物Ⅱ的溴化反应得到双溴代产物 ５,７二溴３［（４′羧基）２′喹啉基］卓艹 酚酮（Ⅲ）;化合物Ⅱ的偶氮偶联反应得到 ５ 位偶氮偶联产物５苯偶氮基３［（４′羧基）２′喹啉基］卓艹 酚酮（Ⅳ）．化合物Ⅱ、Ⅲ、Ⅳ为尚未见文献报道的新化合物,它们的结构已经红外光谱、核磁共振谱及元素分析予以证实．     

芸苔素内酯对水稻孕穗期冷害的防治初报

用植物生长调节剂芸苔素内酯（ｂｒａｓｉｎｏｌｉｅｌｅｓ;简称云大１２０或ＢＲ１２０）对５个具有不同耐冷性的水稻品种进行孕穗期低温冷害的防治研究,结果为：（１）喷施云大１２０可以使水稻品种的低温结实率提高４０１％;（２）云大１２０的不同施用浓度对冷害的防治因品种的来源而异,日本品种在２０００倍液的防治效果较好,云南品种则是１０００倍液效果更佳;（３）不同幼穗发育阶段喷施云大１２０,对防治水稻低温冷害的效果不同,当叶枕距为－２ｃｍ至－３ｃｍ时,喷施效果最佳．     

一类新型多功能基配体合成的研究

３，４二氢２Ｈ吡喃５醛与脂肪二胺在水溶剂中，在冰浴下反应４８ｈ，得到２，９二羟丙基４，７二氮杂２，８癸二烯二醛（Ⅰ）和２，１０二羟丙基４，８二氮杂２，９十一碳二烯二醛（Ⅱ），并经元素分析、红外光谱、核磁共振和质谱证实其结构．     

丙烯的催化二聚

为筛选丙烯二聚催化剂,探讨丙烯二聚反应的活性中心及反应机理,制备了一系列Ｚｎ或ＺｎＭｇ 、ＺｎＮｉ 双组分改性ＺＳＭ５ 沸石催化剂,采用ＩＲ、ＮＨ３ＴＰＤ 研究了其表面酸性,用脉冲微反技术评价了它们的丙烯转化活性和二聚选择性－ 结果表明：在指定反应条件下,ＺｎＭｇ／ＮＨ４ＺＳＭ５（ＩＭ） 样品的丙烯转化率达９４－２ ％ ,二聚选择性近１００ ％ － 在此样品上丙烯二聚按正碳离子机理进行,其活性中心是Ｂ 酸中心;强Ｂ 酸减少,丙烯二聚选择性增加     

二氯1,3-二(3,5-二甲基吡唑)丙烷合钯的合成及晶体和分子的结构

通过１,３二（３ ,５二甲基吡唑） 丙烷与氯钯酸钠反应,制得二氯１,３二（３ ,５二甲基吡唑） 丙烷合钯．该配合物晶体呈单斜晶系,空间群为Ｐ２１／ｃ,晶胞参数为ａ ＝０ ．８７５ １（０） ｎｍ ,ｂ ＝ １ ．６６９ ６（２） ｎｍ ,ｃ ＝ １．１７６ ８（０） ｎｍ ,β＝ １１１ ,２５０°,Ｖ＝ １．６０２ ５（３） ｎｍ３ ,Ｚ＝ ２ ,ＤＣ ＝ １ ．６９８ ｋｇ／ｍ３ ,Ｒ＝ ０ ．０４３ ７ ,ＲＷ ＝ ０ ．０５６ ９ ．     

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-