用红外光度法测量糖液过饱和度的研究

含细晶的过饱和糖浆在加热升温至饱和温度时，对光的透射有最小值．据此用红外光度法测量了糖浆的过饱和度。试验中糖浆的透射光和温度的测量由单板计算机实时处理，并打印和显示测量结果。研究了细晶粒度、预结晶作用等因素对测量误差的影响．给出了适宜的细晶粒度、细晶用量及分散剂的筛选等实验结果。用适当制备的细晶及敏感的测温探头可使测量时间减少至每次５ｍｉｎ．     

脉冲式铜电阻R—T温度传感器的优化设计

铜电阻的温度线性度好，成本低廉，用大占空比的脉冲电流方式供电，可以使铜电阻体的热效应减至最低，从而显著提高温度测量的精度和传感器的性价比．     

变压器油流动带电度的微静电测量方法及其影响因素

为推动我国变压器油流动带电度测量技术的标准化,在实验室建立了一套微静电测量系统,制定了详细的测量规程,并对影响测量结果的关键因素(温度、流速、滤纸和油流次数)进行了试验研究和讨论.研究结果表明:变压器油流动带电度的测量值随温度(10～50℃)的升高显著增加,据此推导出带电度随温度变化的校正公式;新油的带电度基本不受流速的影响,老化油的带电度随流速增长下降明显;滤纸和油流次数同样是影响测量结果的重要因素.该研究对于推动我国变压器油流动带电度测量技术的标准化工作具有积极意义.     

等离子体的温度测量与光谱测温仪

论述了基于光谱学原理的温度测量技术．介绍了在上述原理下建立起来的光谱 测温仪。该仪器能测量符合局域热力学平衡与柱对称条件的电弧及高频等离子体的温度 剖面。测温范围为 ５ ０００—１５ ０００ Ｋ，不确定度约 ２．２％。     

双电桥在精密温度测量系统中的应用研究

针对传统单电桥测温精度已不满足精密温度测量系统需求的问题,在分析双电桥测量微小电阻值原理的基础上,从线性度、准确度和灵敏度角度考虑,通过研究改进,完成了基于四线制的双电桥精密温度测量电桥的设计,用于配合铂电阻Pt1000实现捷联航姿系统温控系统的精密温度测量;通过计算机仿真和工程试验对线性度、准确度和灵敏度进行了分析验证.计算机仿真和工程试验结果证明采用双电桥能有效地完成精密温度测量.     

温度自动测量控制器及其在金属材料线胀系数测定中的应用

本工作设计和制作的温度自动测量控制器利用半导体三极管作温度传感器，集成运算放大器作测量放大和控制器件，可用于温温度测量与控制，具有结构简单，测量快速，准确，可靠，成本低廉等特点，本仪器可广泛应用于大中学物理，化学等有关实验，作为例子，本文介绍其在大学物理实验中对金属材料线胀系数的测量之应用。     

流化床烧炭再生的动力学研究

在流化床反应器内进行分子筛催化剂的烧炭再生实验，用电导法计算机在线测量数据，在466度－800度温度范围内，氧含量为4％－20％，并排除内扩散影响后，测定了含碳量为1．2％（g/gcat)的催化剂的再生动力学参数，回归出分子筛催化剂的再生动力学模型，讨论了温度升高时再生过程的不同控制阶段。     

基于磁悬浮密度计的高精度流体PVT测量系统

建立了一套基于磁悬浮密度计的流体PVT测量系统,其温度测量范围203.15~423.15 K,标准不确定度为0.005 K,压力测量范围0~7 MPa,标准不确定度为700 Pa.通过对恒温系统的改进,缩短了实验本体达到热平衡的时间,提高了温度稳定性.利用该系统对高纯氮气在271~345 K,0~6 MPa范围内进行了密度测量,实验结果与NIST REFPROP9.0数据相比偏差在0.1%以内,并对由于拟合维里方程的不确定度、温度测量和压力测量不确定度引起的密度结果的不确定进行了分析.     

金属／n型半导体（Au／n—GaN）肖特基势垒的研究

材料Au/nGaN在600度温度淬火后，利用电流－电压测量，XPS谱研究金Au和n型GaN半导体形成的接触势垒，电流－电压测量得到肖特基势垒平均高度和理想因子分别为1．24eV,1.03，理想因子为1．12的势垒最大高度为1．35eV，XPS数据表明：600度温度的淬火导致能带向上弯曲0．35eV，随着金的沉积在同一方向产生进一步的能带弯曲0．25eV，我们的结论可以用Cowley-Sze模型来解释，结合表明，在GaN表面有受主态密度。     

铂铑10-铂热电偶测量结果的不确定度评定

热电偶是将温度转换为电势的一种感温元件,检测过程是通过电测仪器测量其热电势值,得到的测量结果不可避免地具有不确定度。根据测量不确定度评定与表示理论,针对检测过程中影响测量结果的因素,分析了工作用铂铑10-铂(S分度)热电偶测量不确定度的来源,评定了各分量引入的标准不确定度,得出了测量结果的扩展不确定度。要确保检测过程严格按标准方法进行测量,减少或排除随机的影响因素,提高测量结果的准确性和可靠性。     

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.     

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.     

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。     

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.     

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.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

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.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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