L-谷氨酸-5-甲酯金属化合物的合成、表征和生物活性

在仿自然的条件下,合成了上L-谷氨酸-5-甲酯.对L-谷氨酸-5-甲酯晶体进行了X-射线单晶衍射测定.测量表明,L-谷氨酸-5-甲酯属单斜晶系,C2空间群,其中α=10.286(3)(A),b=4.6163(11)(A),c=17.111(4)(A);β=104.995(4)°.通过L-谷氨酸-5-甲酯与MgCl2·6H2O和Ca(OH)2反应,分别合成得到了相应的金属化合物.用比色法测试了L-谷氨酸-5-甲酯对三磷酸腺苷二钠分解的催化活性,结果表明:L-谷氨酸-5-甲酯合镁和L-谷氨酸-5-甲酯合钙对三磷酸腺苷二钠的分解具有较好的活性.     

新型4-羧酸-2,2′:6′,2″-联三吡啶配合物的合成、晶体结构与荧光性质

用乙酸锌、4-羧酸-2,2′:6′,2″-联三吡啶和草酸在水热法条件下反应生成新的配合物1,结构式为[Zn_3(tpy)_2(C_2O_4)_2(H_2O)_4]·(H_2O)(tpy=4-羧酸-2,2′:6′,2″-联三吡啶).X-射线单晶衍射测定配合物1,该单晶属于单斜晶系,2/m点群,P2_1/c空间群,晶胞参数为:a=8.8197(13),b=23.462(3),c=10.0674(14),α=90°,β=113.49°,γ=90°.配合物1是三核配合物.中心锌离子Zn1是六配位,其中3个Zn1-N键长分别是2.186(4)、2.083(3)、2.172(5),3个Zn1-O键长分别是2.230(3)、2.027(3)、2.048(4).锌离子Zn2是对称六配位,键长分别是2.1223(3)、2.0597(5)、2.1416(4).配合物1分子通过氢键和π-π堆积作用形成三维超分子结构.对配合物1进行荧光及热稳定性的研究表明,配合物1具有很好的稳定性,并具有一定的荧光性.     

镍-多吡啶配合物[Ni（dmbpy）3]（H2O）（ClO4）2的合成、晶体结构及与DNA相互作用研究

合成了一个镍-多吡啶配合物[Ni(dmbpy)3](H2O)(ClO4)2(dmbpy=4,4’-二甲基2,2’-联吡啶),并通过室温挥发法培养了该配合物的单晶.单晶X-衍射结果表明,该配合物属三斜晶系,P-1空间群,主要晶体学参数为:a=11.192(13),b=14.444(18),c=14.468(18),α=84.86(2)°,β=76.691(19)°,γ=68.24(2)°,V=2114(4)3,Z=2.配合物分子由1个单核镍阳离子单元[Ni(dmbpy)3]2+、2个高氯酸根阴离子和1个水分子组成,配合物中镍原子的配位环境为六配位的八面体构型,3个dmbpy分子以双齿形式和1个镍原子配位.通过紫外光谱和荧光光谱研究了该配合物与小牛胸腺DNA(CT-DNA)的相互作用,结果表明该配合物与CT-DNA之间存在静电和插入两种作用模式.     

基于多氮杂环配体的锌(Ⅱ)和镉(Ⅱ)配合物的水热合成与晶体结构

以多氮杂环配体二吡啶[3,2-a:2',3'-c]并吩嗪(DPPZ)和[2,3-f]吡嗪并[1,10]菲罗啉(Pyphen)为配体,采用水热法合成了两个配合物[Zn(DPPZ)2SO4]·2H2O(1)和[Cd(Pyphen)2Cl2](2),利用元素分析和单晶X-射线衍射对其结构进行了表征.分析结果表明,配合物(1)和(2)都属于单斜晶系,空间群都为C2/c.配合物1的晶胞参数为:a=17.500 7(9),b=7.234 4(5),c=23.182 2(14),β=94.942(5)°,V=2 924.1(3)3,Z=4;配合物(2)的晶胞参数为:a=8.509 8(17),b=12.524(3),c=22.683(5),β=95.31(3)°,V=2 407.0(8)3,Z=4.配合物(1)和(2)均为零维结构单元,配合物(1)的单元之间通过π-π堆积作用形成二维层状结构,层与层之间通过氢键作用形成三维超分子结构.配合物(2)的配位单元之间通过Pyphen配体的π-π堆积作用构筑成一个二维超分子结构.     

L-谷氨酸-5-甲酯金属铜化合物的合成、表征及生物活性

通过L-谷氨酸-5-甲酯与Cu（CH3COO）2.H2O反应,合成了相应的金属铜化合物[Cu（C6H10NO4）2].对L-谷氨酸-5-甲酯金属铜化合物的晶体进行了X-射线单晶衍射测定.结果表明：L-谷氨酸-5-甲酯金属铜化合物属单斜晶系,P2（1）空间群,其中a=9.5883（19）,b=5.1521（10）,c=15.562（3）;β=98.65（3）°.抗菌筛选数据表明,L-谷氨酸-5-甲酯金属铜化合物对枯草芽胞杆菌具有较好的抑制作用.     

新型铅(Ⅱ)配合物的水热合成与晶体结构

利用水热技术,以3,4,5,6-四氟邻苯二甲酸、1,10-邻菲罗啉衍生物、Pb(NO3)2.6H2O为原料合成了铅(Ⅱ)配合物C52H26F8N8O6Pb,并通过元素分析和X射线单晶衍射对其结构进行了表征.该晶体属于单斜晶系,P21/n空间群,a=10.573 5(4),b=16.748 5(5),c=24.649 5(6),β=96.181(3)°,V=4 339.8(2)3,Z=4.结构分析表明该配合物为零维结构,且通过氢键及π-π相互作用使之形成一维链状结构.     

L-丝氨酸水杨醛希夫碱镍(Ⅱ)配合物的合成、结构及与DNA的相互作用

合成了L-丝氨酸水杨醛希夫碱及邻菲咯啉混配体镍(Ⅱ)配合物,[Ni(ser-sal)(phen)(CH3OH)](ser-sal为L-丝氨酸与水杨醛形成的希夫碱,phen为1,10-邻菲咯啉),利用元素分析和红外光谱进行了表征.X-射线单晶衍射测定表明,配合物属于单斜晶系,C2/c空间群,晶胞参数为a=26.040(2),b=15.110 1(13),c=11.592 0(9),α=90°,β=107.128(2)°,γ=90°,V=4 358.8(6)3,Z=8,F(000)=1 984,R1=0.078 5,wR2=0.204 0.在晶体中配合物以分子间氢键作用形成二维网状结构.利用紫外可见吸收光谱、荧光光谱和圆二色光谱法研究了该配合物与小牛胸腺DNA(CT-DNA)的相互作用.结果表明,该配合物与DNA作用方式为插入模式,与DNA的结合常数Kb为7.8×104 L·mol-1,荧光猝灭常数为Ksq为0.91(CCDC∶1442728).     

一个二维超分子化合物[Co(bbbm)(dnba)_2]的合成、结构及性质

以1,4-二苯并咪唑基-丁烷(bbbm)和3,5-二硝基苯甲酸(Hdnba)为混合配体,利用水热合成方法获得了一个环状双金属Co(II)配合物:[Co(bbbm)(dnba)2],并通过元素分析、IR和单晶X-射线衍射确定了其结构.该配合物分子式为C32H24Co N8O12,三斜晶系,P1空间群,a=10.859(5),b=12.325(5),c=13.119(5),α=100.638(5)°,β=108.858(5)°,γ=92.309(5)°,Z=2,V=1623.5(12)3,Mr=771.52,Dc=1.578 g/cm3,F(000)=790,μ=0.609 mm-1,S=1.062,R=0.0423,wR=0.0967.晶体结构分析表明,配合物中的CoII与来自两个bbbm配体的两个N原子、两个dnba阴离子的单齿羧基O原子配位形成四面体配位构型.相邻的两个CoII通过两个bbbm配体连接成环状结构,相邻的双金属Co(II)配合物通过π-π堆积作用拓展成一维超分子链,该超分子链进一步通过C-H…π作用拓展成二维超分子网络.另外,还研究了该化合物的电化学和荧光性质.CCDC:1025167.     

N，N-二羧甲基-L-谷氨酸金属配合物的合成、表征和催化活性

以L-谷氨酸为原料合成了N,N-二羧甲基-L-谷氨酸(H2bcmga),并对其进行了元素分析、IR、UV-Vis和1HNMR表征.通过N,N-二羧甲基-L-谷氨酸与MgCl2 ·6H2O、Ca(OH)2、MnCl2 ·4H2O、NiCl2 ·6H2O、CoCl2 ·6H2O、CuCl2·2H2O、ZnCl2反应,分别合成了相应的金属配合物.用比色法测试了N,N-二羧甲基-L-谷氨酸和7种金属配合物对三磷酸腺苷二钠分解的催化活性,结果表明:N,N-二羧甲基-L-谷氨酸与镁、钙和锰形成的配合物对三磷酸腺苷二钠的分解反应具有较好的活性.     

新试剂2-[3-(5-硝基苯并异噻唑)偶氮]-β-萘酚的合成及其与铋的显色反应

合成了新试剂2-[3-(5-硝基苯并异噻唑)偶氮]-β-萘酚.并研究了试剂与铋的显色反应条件.用元素分析、波谱等鉴定其结构并测定其离解常数,结果表明,在pH=7.46时,试剂与铋发生灵敏的显色反应,形成稳定红色配合物,λmax=540nm,络合比Bi3+:R=1:2,摩尔吸光系数为5.13×104L·mol-1·cm-1.Bi3+在0～1.8mg·L-1范围内遵守比耳定律.     

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.     

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.     

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。     

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.     

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.