氨羧型螯合树脂的合成-分别以氯甲基化和含羰基的苯乙烯-二乙烯基苯共聚物为母体合成氨羧型螯合树脂

本文分别对两种系列的苯乙烯-二乙烯苯共聚物合成了五种不同的氨羧型螯合树脂.对氯甲基系列(A系列)来说,它们的铜交换量次序是:亚胺基二乙酸型(Ⅴ)>亚胺基二丙酸型(Ⅶ)>三乙四胺型(Ⅷ)>三乙四胺一羧甲基化型(Ⅸ)>甘氨酸型(Ⅵ)对含羰基系列(B系列),其铜交换量次序是:(Ⅸ)≈(Ⅴ)≈(Ⅶ)>(Ⅵ)≈(Ⅷ) 对螯合树脂(V)还用四种不同的方法进行合成,对A系列来说,其铜交换量次序是:亚胺基二乙酸二乙酯法(a)>亚胺基二乙腈法(b)>部分季铵化-亚胺基二乙酸法(c)>六次甲基四胺胺化一羧甲基化法(d)对B系列来说,只有用a法和b法其铜交换量较好,其余均较差. 本文还对这二种系列的相应螯合树脂进行了比较,并初步探讨它们铜交换量不同的原因. 此外还研究了A系列树脂的水解,溶剂对螯合树脂制备的影响等等.     

亚胺基二乙酸树脂对钬(Ⅲ)的动力学研究

在亚胺基二乙酸树脂(D401)吸附钬(Ⅲ)的最佳pH条件下,详细研究了浓度、温度、振荡频率对亚胺基二乙酸树脂吸附钬(Ⅲ)的吸附速率的影响。     

亚胺基二乙酸树脂对水钬（Ⅲ）的动力学研究

在亚胺基二乙酸树脂（D401）对附钬（Ⅲ）的最佳pH条件下，详细研究了浓度、温度、振荡频率对亚胺基二乙酸树脂吸附钬（Ⅲ）的吸附速率的影响。     

十二烷氧基双氧乙烯基乙酸咪唑啉乙酸盐的合成和性能

以十二烷氧基双氧乙烯基乙酸为原料,与二乙三胺反应合成了咪唑啉环,进而合成了乙酸盐型咪唑啉两性表面活性剂.测定了其水溶液的表面张力、起泡性能和临界胶束浓度,讨论了反应条件对表面活性剂性能的影响,找出了成环反应的最佳条件.即以乙酸异戊酯为溶剂,二乙三胺/十二烷氧基双氧乙烯基乙酸摩尔比为4∶1,在184℃以上反应8.5h.     

自旋标记三元共聚物配体及其钆（Ⅲ）：配合物的合成与表征

用二乙基三胺五乙酸二酐和二氯磷酸－Ｏ－（１－氧－２，２，６，６－四甲基－４－哌啶醇酯）与多甘醇共缩聚年鉴是一系列三元共聚物配体及其钆（Ⅲ）配合物。     

水杨酸苯酯──曲拉通X──100──钆增敏体系荧光分析法测定铽

在研究水杨酸苯酯——曲拉通Ｘ——１００体系荧光法测定Ｔｂ３＋的最佳条件时，发现Ｇｄ３＋对Ｔｂ３＋的特征荧光有增敏效应，从而开发出水杨酸苯酯——曲拉通Ｘ——１００——钆增敏体系测定铽的新荧光分析法。Ｔｂ３＋的检测限达２．２ｍｇ／ｍｌ，比无Ｇｄ３＋共存时的检测限５．４ｎｇ／ｍｌ提高１．４５倍。应用本法成功地测定了氧化钆中铽含量。     

四元络合物导数光谱法测定石英砂中微量铁

研究了在 pH =6 .0的HAc_NaAc的缓冲体系中 ,Fe(Ⅲ )与乙二醇二乙醚二氨基四乙酸 (EGTA) ,邻苯三酚红 (PR) ,溴化十六烷基吡啶 (CPB)形成四元络合物的性质 .利用一阶导数光谱法对微量铁进行了测定 ,测定的线性范围为 0 .4～ 4.0 μg/mL ,变异系数为 4.3% .此方法用于石英砂中微量铁的测定 ,结果满意 .     

超氧化物歧化酶模型化合物的合成,表征和活性

本文报导乙二醇二乙醚二胺四乙酸(EGTA)和邻苯二胺共热缩合得到双核配体N,N,N′,N′-四(2′-苯并咪唑甲基)-1,4-二乙氨基乙二醚(EGTB)及合成的一系列含Cu(Ⅱ),Fe(Ⅲ),Mn(Ⅱ)的具或不具咪唑外桥的EGTB配合物,对配体的~1H NMR,IR,UV-Vis谱及配合物的IR,UV-Vis谱、元素分析、电导等性质进行了研究。并用硝基四氮蓝唑(NBT)光还原法和邻苯三酚自氧化法对配合物的超氧化物歧化酶活性进行了测定,结果发现配合物在10~(-6)～10~(-7)mol·L~(-1)的浓度范围内具有很好的歧化超氧离子自由基O_2~-的活性。     

铜与N,N,N′,N′-四(2’-苯并咪唑甲基)-1,4-二乙氨基乙二醚的双核络合物的合成和性质

本文报导了一种柔顺的、对称的、八齿(N_6O_2型)、双核配体N,N,N’,N’—四(2’—苯并咪唑甲基)—1,4二乙氨基乙二醚(缩写为EGTB)及其一系列铜的络合物的合成与性质。配体由乙二醇二乙醚二胺四乙酸(EGTA)与邻苯二胺共热缩合而成。配体EGTB与不同铜盐和外桥配体反应得到一系列络合物。并对配体的~1HNMR、IR、UV-VIS谱及络合物的IR、UV-VIS、EPR谱、电导、元素分析进行了研究。推测络合物中Cu(Ⅱ)离子的配位几何环境可能是四方锥或畸变的八面体。     

二乙三胺五乙酸-α,ω-双肌醇二单酯Gd(Ⅲ),Fe(Ⅲ)和Mn(Ⅱ)配合物的合成和性能研究

以二乙三胺五乙酸合钆 ( ,Gd DTPA)和 1 ,4,7,1 0 -四氮杂环十二烷 1 ,4,7,1 0 -四乙酸合钆( ,Gd DOTA)及其衍生物为代表的磁共振成像造影剂 ( MRI) ,虽已在临床广泛使用[1,2 ] ,但由于其为离子型配合物 ,故有渗透压相对较高之不足 .作为临床上可用的磁共振成像造影剂的配合物应具备这样几个条件 :中心离子高磁距 ;水溶性好 ;热力学稳定性好 ;对器官或组织的选择性应尽可能高 ;低毒 ;高的驰豫性能 .参考卓仁禧等[3 ] 的工作并考虑到多胺多羧酸为多齿配体 ,易于与金属离子之间形成稳定的配合物且水溶性良好 ;肌醇为多羟基化合物 ,易…     

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.     

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.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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。     

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.