酸枣叶中Vc的浸提及稳定性研究

用酒精、柠檬酸、水浸提酸枣叶片中的Ｖｃ，对浸提率和浸提液中Ｖｃ的稳定性进行了研究。结果表明：在相同浸提温度、时间条件下，浸提率大小为酒精溶液＞酸溶液＞水溶液；升高水温可使浸提率大大提高，在５０℃水温条件下，浸提８ｈ，可使浸提率达到９９．３８％。浸提液中Ｖｃ的稳定性受热及空气的影响较大，加热和与空气接触都可以加速Ｖｃ的损失。降低浸提液的ｐＨ值和加一定量的糖可对Ｖｃ起保存效果。     

碱提法回收猪骨蛋白质的探讨

对碱提法回收猪骨蛋白质工艺参数的研究表明，4种工艺参数对蛋白质得率均有不同程度的影响。其顺序为浸提液pH＞浸提时间＞沉降pH＞浸提温度。碱提法回收猪骨蛋白质的最高得率为25．7％，最佳工艺参数为浸提时间105min，浸提液pH12．0，浸提温度30℃和沉降pH5．0。     

正交设计优选密蒙花总黄酮提取工艺研究

目的：研究云南当地密蒙花总黄酮的提取工艺．方法：采用乙醇溶液浸提,在单因素基础上,通过正交试验法,考察乙醇浓度、浸提温度、浸提时间3个因素对密蒙花中总黄酮提取率的影响,并用紫外可见分光光度计对密蒙花中总黄酮进行含量测定,得到最佳的提取工艺．结果：本实验对密蒙花中总黄酮提取最佳方法为A3B3C3,即乙醇浓度为70％,浸提温度为75℃,浸提时间为3h,总黄酮提取率为14．50％．结论：采用乙醇溶液浸提法可以用于云南当地密蒙花总黄酮的提取,其中浸提温度对总黄酮提取率影响最大．     

紫甘蓝色素最佳提取工艺条件的研究

以食用紫甘蓝菜为原料，采用浸提法提取、分光光度法研究紫甘蓝色素．实验结果表明提取紫甘蓝色素的最佳工艺条件是：以蒸馏水为浸提剂，液固比为5：1（mL，g），酸度条件pH为2，浸提时间2h，浸提温度50℃，紫甘蓝色素的提取率达17．1％．     

紫叶小檗果皮色素提取方法的研究

本文研究了从紫叶小檗果皮中提取橙红色素时，浸提剂种类、浸提温度、浸提时间、浸提剂ｐＨ值及不同比例的紫叶小檗果皮（ｇ）：浸提剂（ｍｌ）对紫叶小檗色素提取率的影响．     

一种新型抗癌药的蛋白质和蛋白酶分析

本文用ＳＤＳ－ＰＡＧＥ和活性电泳技术定性分析了河南省生物工程重点实验室研制的新型抗癌药的蛋白质和蛋白酶的种类和含量．结果表明：（１）文中方法能有效地浸提所用各材料中的有效成份；（２）不同材料所含蛋白质和蛋白酶种类有较大差异；（３）在连续浸提新型抗癌药有效成份过程中，第二次从各材料中浸提的蛋白酶活性高于第一次．综合分析表明，第二次浸提效果好于第一次．     

胡萝卜红枣复合汁饮料的加工工艺研究

以胡萝卜、红枣为原料，利用正交试验设计，主要研究了枣汁浸提的最佳工艺条件以及最佳复合汁配方，并对枣汁的澄清和复合汁稳定进行了探讨．结果表明，最佳浸提条件是：干枣和水质量比为1：7，浸提温度70℃，pH值5．0，浸提时间8h；复合汁最佳配方为：复合汁含量70％，胡萝卜汁／枣汁(V／V)比6：4，糖度14％，柠檬酸量为0．10％；海藻酸钠用量为0．15％时稳定性最好。     

高温防暑固体饮料的研究

对高温防暑固体饮料中的中草药最佳浸提条件及配方进行了研究．结果表明，最佳浸提条件为温度１００℃，原料与水比１∶１９，时间为４ｈ．同时也确定了高温防暑固体饮料的配方     

桑叶和茶复合饮料加工工艺的研究

以桑叶和绿茶为主要原料，研究了桑叶和茶复合饮料的加工工艺．采用正交试验方法，探索出了桑叶最佳浸提条件及其与茶复合饮料的工艺配方．研究结果表明：桑叶的最佳浸提条件为浸提温度60℃、浸提时间30min、料水比1：40；桑叶和茶复合饮料的最佳配方为桑叶汁／茶汤比5：4(体积比)、蔗糖7％、柠檬酸0．15％．     

鱼腥草挥发油的提取及其抑菌效果研究

采用正交试验方法，研究确定鱼腥草挥发油浸提的最佳工艺条件为：物料比1：10、浸提温度85℃、pH值7～8、浸提时间8h，提取液最大吸收波长为450m．抑菌试验表明，鱼腥草挥发油对大肠杆菌、金黄色葡萄球菌、枯草杆菌均有一定的抑制作用，最低抑菌浓度分别为0．6％、0．8％、0．6％；试验还表明，鱼腥草提取液对青霉和黑曲霉无明显抑菌作用．     

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-