高氯酸二水·双(N-氧化吡啶-2-甲醛)缩-1,3-丙二胺合镍粉末衍射数据的指标化研究

本文报导了高氯酸二水·双(N-氧化吡啶-2-甲醛)缩-1,3-丙二胺合镍的合成,粉末衍射数据及精化的单胞参数.主要的结晶学数据为:[Ni(C_(15)H_(16)N_4O_2)(H_2O)_2)(ClO_4)_2.正交晶系,空间群Pnam 或Pna2_1,a=7.490(4)×10~(-10)m,b=15.510(11)×10~(-10)m,c=18.457(13)×10~(-10)m,Z=4,Dcal=1.790,Dobs=1.765,品质因子为15.7.     

1,4-二(2-邻苯甲醛基)-1,4-二氧丁烷的合成及晶体

以 1 ,2 -二溴乙烷和水杨醛为原料 ,通过亲核取代反应 ,合成了 1 ,4 -二( 2 -邻苯甲醛基 ) - 1 ,4 -二氧乙烷 (C16H14 O4)。通过单晶X -射线衍射法确定其晶体结构 ,标题化合物的晶体属于三斜晶系 ,空间群为P- 1 ,晶胞参数a=7 80×1 0 -10 m( 2 ) ,b=8.4 6 × 1 0 -10 m( 2 ) ,c=1 .1 5× 1 0 -9m( 2 ) ,α=82 .88( 3) ,β=74 95( 3) ,γ=6 7 0 7( 3) ,V =6 74 × 1 0 -2 8m( 2 ) ,Z=2 ,Dc =1 333g/cm3 。     

一种可用于二阶非线性光学材料的新型对硝基酚水合物的晶体结构

合成了标题化合物水合对硝基酚C6H5NO3·1.5H2O,用X-射线单晶衍射法测定了该化合物的晶体结构.结果表明,晶体属单斜晶系,C2空间群,α=21.198(11),b=3.674 7(19),c=10.376(6)×10-10m,β=117.164(7)°,V=719.1(7)× 10-30 m3,Z=4,Dc=1.535 g/cm3,F(000)=348,λ(MoKα)=0.710 73 × 10-10m,μ=0.133mm-1.收集2 031个独立衍射点,其中可观测衍射点1 344个[I＞2σ(I)].最终偏离因子R=0.054 6,wR=0.1247.标题化合物非中心对称的晶体结构和良好的共轭分子结构符合二阶非线性光学(NLO)材料的结构要求,为我们设计有效的非中心对称的NLO材料提供了一种新的方法.     

三(1—苯基—3—甲基—4—三氟乙酰基吡唑啉酮—5)二水合钕(Ⅲ)萃合物的晶体结构和分子结构的测定

合成了三(1—苯基—3—甲基—4—三氟乙酰基吡唑啉酮—5)二水合钕(Ⅲ)萃合物。经元素分析确定其组成为Nd(PMTFP)_3·2H_2O,X射线单晶衍射测定了化合物的晶体结构及分子结构。晶体属单斜晶系,P2_1/c空间群,晶体学参数如下:a=17.799(9)×10~(-10)m,b=12.661(6)×10~(-10)m,c=18.691(7)×10~(-10)m,β=102.71(6)~0,v=4108.8(10~(-10)m)~3,Z=4.分子中中心原子钕与八个氧原子成配位键,其中六个氧来自三个双齿配位的PMTFP-基,其余两个氧则由两个水分子所提供,八个氧原子取四方反棱柱型排列在钕的周围。     

三聚磷酸二氢铝二水物的合成和表征

用磷酸和氢氧化铝为原料制备三聚磷酸二氢铝二水物。用X-衍射、红外光谱、化学分析、DTA-TG结合X-ray分析,证明产品的化学结构式为AlH2P3O10*2H2O。其晶体结构属正交晶系,空间群为PZ1/bZ1/aZ/m,D92h,晶胞参数a=15.919×10-8 cm,b=8.884×10-8cm,c=9.936×10-8 cm,单位晶胞体积V=1 405×10-8 cm3,Z=6。防绣性能测试表明其防锈能力与红丹颜料相当。毒理学试验表明该颜料半致死量LD50=18.0 g/kg(小白鼠),属实际无毒级,符合食品容器及儿童玩具涂装的要求。     

基于β-环糊精的金属有机骨架材料的合成研究

采用蒸汽扩散法制备了新型的具有生物相容性的金属有机骨架化合物(Na-β-CD-MOFs),利用X-射线单晶衍射仪对Na-β-CD-MOFs结构进行检测并解析,分析表明该晶体属于单斜晶体,P21空间群,分子式为C₄₂H₇₆O₄₂Na,a=14.713 3(13)×10-10 m,b=15.314 8(13) ×10-10 m,c=15.016 9(13)×10-10 m,β=117.797(3)°,α=γ=90.000°,V=2 993.31(50) ×10-10 m³。然后通过XRD、SEM、FT-IR、TG进行表征,表明Na-β-CD-MOFs中保留了环糊精骨架,具有多孔道三维网状结构。     

基于碱金属钾的β-环糊精金属有机骨架的合成研究

通过优化后的甲醇蒸汽扩散法合成了一种新型基于β-环糊精有机分子和碱金属(K＋)配位的金属有机框架(β-CD-MOF1),并进行了扫描电镜(SEM)、红外光谱(IR)、粉末衍射(XRD)、热重(TG)表征;单晶X射线衍射分析表明β-CD-MOF1具有碗状孔隙和“8”型双通道三维构型,属于单斜晶系,P2₁空间群,分子式为C₄₂H₇₂O₄₀K,a＝15.233 0(11)×10－10 m,b＝10.600 4(8)×10－10 m,c＝20.301 4(14)×10－10 m,α＝90°,β＝108.739°(2),γ＝90°。β-CD-MOF1在保留了β-环糊精的空腔结构的基础上,由K—O键的配位连接形成了有序排列的三维多孔框架。β-CD-MOF1有望成为一种新型的多功能绿色晶体材料。     

焰熔法生长LaAlO_3晶体的介电性质研究

报道 LaAlO_3晶体的焰熔法生长及其介电性质.所生长晶体的最大尺寸达Φ15×25mm~3.LaAlO_3晶体具有六方结构,晶胞参数为a=b=5.36■,c=13.11(?).晶体在室温下介电常数为24.2,介电损耗小于5×10~(-4)(10kHz).     

载体自转晶B-Al-MFI型沸石膜的原位合成与表征

在乙胺和水混合蒸汽相中 ,首次通过载体自转晶 ,在多孔玻璃片表面原位合成了B Al MFI型沸石膜 FEAM分析表明 ,沸石膜的化学组成为w(B2 O3 ) =3.7% ,w(Al2 O3 ) =0 .5 5 % ,w(SiO2 ) =95 .2 5 % ,w(Na2 O) =0 .5 0 % X 射线衍射和扫描电镜观察证明 ,膜中沸石晶体的取向是随机的 晶体尺寸约为 15～ 2 5 μm ,单层晶体厚的膜约为 10～ 2 0 μm 在焙烧除去有机模板剂后的沸石膜上 ,O2 和N2 的透过性分别为 0 .0 95× 10 -8和0 .15× 10 -8mol/ (m2 ·s·Pa) 计算的O2 /N2 的理想选择性 (0 .6 3)明显低于诺森扩散的理想选择性值 (0 .94)和透过原载体的理想选择性值 (0 .91)     

LiAl（IO3）4晶体结构的研究

用新的化学方法获得多晶碘酸盐LiAI(IO_3)_4其晶体具有压电性。密度为4.60g/cm~3,颜色为白色,常压下分解温度是445±5℃。用X射线粉末法测定了LiAI(IO_3)_4的晶体结构和原子参数。发现LiAI(IO_3)_4与a-LiIO_3同晶型,属六方晶系。室温下的点阵常数分别为a=5.585×10~(-10)m,C=4.945×10~(-10)m,c/a=0.8854。     

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.