Pechini法合成SrAl4O7研究

利用Pechini法合成了SrAl4O7，研究了溶液pH和柠檬酸与金属离子摩尔比n（CA）／n（M）对SrAl4O7结晶过程的影响，确定了SrAl4O7随时间和温度的稳定范围．结果表明，增加溶液pH和n（CA）／n（M）有利于形成SrAl4O7．当n（CA）／n（M）=2时，在900℃，加热2h，从pH=7的前驱体形成单相的SrAl4O7；若不调节pH，即使在1100℃，加热2h也不能形成单相的SrAl4O7．当n（CA）／n（M）增加到4时，对不调节pH的前驱体，在1100℃，加热2h形成单相的SrAl4O7；调节溶液pH=7，单相的SrAl4O7的形成温度降低到900℃，2h．SrAl4O7至少能在1400℃稳定2h，在1500℃开始分解．     

PHPA/SDBS/Mg-Al-HTlc/H2O悬浮体流变性研究

研究了部分水解聚丙烯酰胺（PHPA）／十二烷基苯磺酸钠（SDBS）／Mg-Al类水滑石（Mg-Al-HTlc）／水悬浮体的黏度行为，分别考察了SDBS质量分数Ⅲ（SDBS）、HTlc质量分数w（HTlc）、w（SDBS）／w（HTlc）比及pH对体系黏度（田）的影响．发现在所研究的质量分数范围内，PHPA／SDBS体系的η随w（SDBS）的增大而下降；PHPA／SDBS／Mg-Al-HTlc悬浮体的η随w（HTlc）的增大先上升，后下降，在w（SDBS）／w（HTlc）=0．25附近出现一个最大值；随pH的增大，PHPA／SDBS／Mg-Al-HTlc悬浮体的η先上升，在pH为7．0～10．5之间出现一个平台，后下降．     

Sol-gel水热偶合法制备纳米AlOOH及其表征

以AL2（SO4）3为原料，在pH值为3．5，溶胶浓度为0．3-0．5mol/L，分散剂0．3％，温度为80℃的条件下，胶溶4h，后经5h100-150℃的水热处理，制得平均粒度小于70nm的AlOOH；用TEM、X射线衍射、TG-DTA对样品进行了表征，并研究了不同介质、不同pH、不同分散剂用量对分散性能的影响。     

天然物质复配铁型絮凝剂及其处理味精废水的研究

采用不同天然物质（城市草炭土、草甸土、火山灰和红壤）与聚合硫酸铁复配，制备一种更为经济的新型絮凝剂，利用其对高浓度有机味精废水进行絮凝实验，并讨论了各组分的不同投加量比例及其絮凝的影响因素．研究结果表明：此种天然物质．聚合硫酸铁复配絮凝剂处理味精废水表现出优良的絮凝性能．其中以草甸土、红壤为天然复配材料处理效果最为显著，其最佳投加量比例为草甸土（g）：聚合硫酸铁（ml）：助剂（g）=11：4：6，最佳pH为7．0-8．0；红壤（g）：聚合硫酸铁（ml）=10：6，最佳pH为1．0-2．0．在此条件下，该天然复配铁型絮凝剂对味精废水的CODcr，去除率远远高于聚合硫酸铁（PFS）本身，分别可达到71．1％和55．0％。     

高效液相色谱法用于米格列奈钙含量和有关物质的研究

目的：建立米格列奈钙的含量及有关物质的高效液相色谱测定方法。方法：采用AgilentSB—C18柱（250mm×4，6mm，5μm）；流动相：水溶液（用磷酸调节pH值为2．4）-乙腈（55：45）；检测波长为：210nm；流速：1mL/min；柱温：30℃。结果：建立的色谱方法是有关物质与主药分离良好，米格列奈钙在80μg／mL-120μg／mL范围内，r=0．9999，浓度与线性关系良好。结论：本法简便、准确，可用于米格列奈钙的含量测定及其有关物质的测定。     

高分子微球固定化脂肪酶的合成研究

本实验采用悬浮聚合法制备苯乙烯-二乙烯苯-马来酸酐（St—DVB—cBA）三元共聚高分子微球（0．26～0．33mm）,并用其作为脂肪酶的载体,进行脂肪酶的固定化。实验结果表明,制备固定化脂肪酶的相对最佳条件：脂肪酶加入量2．0mg,载体50mg,反应温度30℃E,反应时间6h,pH=7．0,最高固载率可达80．02％,酶活4150U／g载体。所制得的酶最佳催化条件：反应温度40℃,pH=7．38。     

固化液对α-磷酸钙-磷酸四钙骨水泥强度的影响

用磷酸氢二钠（SPDD）和／或柠檬酸配制了不同pH值的固化液，在1300℃煅烧β-磷酸三钙制备了α-磷酸三钙（α—TCP），在1420℃煅烧等摩尔混合的二水磷酸氢钙和碳酸钙制备了磷酸四钙（TeCP）．制备骨水泥样品时固化液与固相的比（L／P）为0．25～0．45mL／g．测量了骨水泥的抗压强度和孔隙率，考察了L／P和固化液组成对水泥抗压强度的影响．结果表明：抗压强度随固化液pH值降低而增大，抗压强度达到最大值有一个最优的L／P．在L／P=0．30mL／g and pH=5的条件下，抗压强度达到21．69MP．     

锂快离子导体Li1+2x+2yAlxMgyTi2-x-ySixP3-xO12系统的合成与表征

以LiTi2（PO4）3为基，用分析纯原料经高温固相反应（～900℃）制得一系列锂快离子导体材料Li1＋2x＋2yAlxMgyTi2-x-ySixP3-xO12（以下简称Ti—Mg—Lisicon）．系统的合成温度随x和y的增大而降低．应用交流阻抗技术测定的电导率数据结果表明x=0．1，y=0．1的合成物室温电导率最好为1．31×10^-4S／cm，而673K时x=0．1，y=0．3的合成物的电导率最大，为2．93×10^-2S／cm．X射线衍射分析结果表明在x=0．1，y≤0．7；x=0．2，y≤0．6的组成范围内均得到空间群为R3C的合成物.     

新型无机-有机杂化材料Mo8O26（H2bpy）2的合成、结构及性能研究（bpy=4，4＇-bipyridine）

以（NH4）6[Mo7O24]·4H2O、Co（NO3）2·6H2O、4，4＇-联吡啶、冰乙酸和无水乙醇为原料，在150℃下反应3d，得到粉绿色晶体Mo8O26（H2bpy）2。通过红外光谱、元素分析和单晶X-射线衍射法表征该无机-有机杂化材料的结构。结果表明：该晶体属单斜晶系，Pi空间群；晶胞参数a=10．7200（6）A°，b：15．1819（9）A°，c=10．7464（6）A°，β=93．7930（10）°，V=1745．15（17）43，Z=4；用6518个独立衍射点（R（int）=0．0185）精修结构，最终残差因子R1=0．0239，wR2=0．0261。通过UV／VIS／NIR反射光谱的研究表明，此杂化材料对太阳辐射具有选择性的吸收；同时探讨了反应条件对合成产物的影响。本晶体结构数据已收录于英国剑桥晶体学数据库，编号为：CCDC286752。     

毛细管电泳-激光诱导荧光测定血样中格列吡嗪

本文建立了毛细管电泳-激光诱导荧光法测定格列吡嗪的新方法．采用异硫氰酸荧光素（FITC）为衍生剂，考察了衍生缓冲溶液类型、浓度、pH、反应计量比及背景缓冲溶液类型、pH值、浓度、进样时间、分离电压等对测定格列吡嗪效果的影响．使用未涂层的毛细管柱（47cm×50μmi．d．，有效柱长40cm），10mmol／LNaHCO3-Na2CO3（pH=9．6）为衍生缓冲溶液，在25℃时，异硫氰酸荧光素与格列吡嗪计量比为40：1条件下闭光反应12h后，以40mmol/LNa2B4O7-NaHCO3（pH=9．4）为背景溶液，在激光波长488nm、运行电压14KV条件下，血浆样品用微超滤除蛋白后直接测定．线性范围为2．24×10^-10～1．12×10^-8mmol／L（r=0．9986），检出限为10^-10mmol/L．虽然血清白蛋白并不影响测定，但为了降低毛细管的污染，减小毛细管后处理程序，提高分析速度，延长毛细管使用寿命，采用快速微超滤取样以除去蛋白，取得良好效果．     

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.