基于红外光谱无损检测自封袋表面微量毒品的研究

验证显微红外技术通过红外显微镜快速采集微量甚至痕量样品红外光谱的能力.研究中所采用的检测方法是利用红外显微镜直接采集塑料自封袋表面微量毒品的红外光谱图,并与毒品标准红外光谱的吸收峰尤其是特征吸收峰进行定性比对分析.研究结果表明,采集到的样品红外光谱图与毒品标准红外光谱的主要吸收峰尤其是特征吸收峰相吻合,达到了预期的研究目的,并可为侦破涉毒案件提供充分证据.     

红外光谱相关分析定量测定有机物中微量水份

把相关分析方法应用于红外光谱的定量分析中，编制了用相关分析方法进行多组份体系定量分析的ＯＢＥＹ程序．利用此程序测定了有机物中的微量水份．测量结果表明，红外光谱相关分析是一种简单可行、普遍适用的定量分析方法．     

胃癌及胃炎的临床诊断中红外光谱方法研究

用中红外光谱ATR方法对110例冻存,89例新鲜离体胃组织样品,80例新鲜胃镜样品进行研究,同时用中红外光纤法进行了6例在体原位的检测。对110例冻存样品,各项指标与病理检测结果的符合率平均可达到90%以上。新鲜离体与在体原位也大致同病理结果符合。为了研究地区差别,对杭州市第一医院消化科80例胃镜样品进行了光谱测定,根据病变程度可以看到相应的光谱变化。结果表明中红外光谱法用于各种胃炎等胃部疾病和恶性肿瘤的检测是一种有效方便的方法。     

傅立叶变换红外光谱和拉曼光谱对参片的无损鉴别

利用傅立叶变换光谱和拉曼光谱法，直接、快速地测定了不同参片样品，并用计算机比对软件对所测样品的红外、拉曼光谱图进行比较．结果表明，不同品种、不同产地或加工方法不同的参片在高频区有相似的红外、拉曼特征光谱图，但在低频区其特征吸收峰位置和峰高有一定的差异，经计算机比对相关系数进行比较，不同参片的红外光谱图特别是拉曼光谱图仅有微小差别．傅立叶红外光谱技术和拉曼光谱技术用于鉴定分析人参，无需对样品进行分离、提纯，样品用量少，便于直接、快速、简便、有效进行测定。     

阜山金矿床东风矿段脉石英的红外光谱找矿标型

石英是原生金银矿物的主要载体矿物。利用红外光谱方法测定了东风矿段３７件脉石英包裹体样品的Ｈ２Ｏ、ＯＨ和ＣＯ２的相对吸光度。结合对应样品的相对含量与吸光度的相关分析,其结果为深部矿体定位预测提供了参考,并给出了东风矿段脉石英的红外光谱找矿标型。     

薄层色谱与显微红外光谱联用鉴定复合增塑剂

提出了用薄层色谱(TLC)与显微红外联用的方法进行增塑剂的分析.该方法综合了TLC的灵活、高效的分离特点和显微红外强有力的微量样品定性功能,采用特殊的TLC斑点快速转移法,通过选择合适的薄层(TLC)预制板和TLC展开剂,分离了涵盖6种类别和12个增塑剂化合物的多个复合增塑剂.同时通过选择最佳样品分析区、最佳显微红外分析条件和适当的斑点洗脱溶剂,用显微红外光谱定性各斑点分离物.所建立的方法能定性分析几乎所有类别的复合增塑剂.     

闪锌矿系列的物理性质研究

对采自不同类型矿床,含铁量不同的闪锌矿作了比磁化率和红外光谱的测定,某些样品作了晶场光谱测定。作了比磁化率的理论计算,并讨论了Fe~(2+)和Fe~(3+)在晶体中对磁化率的贡献。从理论上对闪锌矿的晶场光谱作了分析,并解释了闪锌矿颜色与杂质的关系。讨论了红外光谱的特点。     

汽油的太赫兹时域光谱特性研究

本文应用太赫兹时域光谱技术研究了不同型号汽油在0.28-2.1THz波段的光学性质,采用快速傅里叶变换得到样品的吸收谱和折射率谱.同时,运用傅里叶变换红外光谱装置测定了样品的中红外吸收谱.比较两种实验结果可知,不同型号汽油在太赫兹波段有明显的峰位位移和相对峰强改变,且吸收谱带展宽,说明样品在太赫兹波段比在中红外波段更具有吸收活性.太赫兹技术可作为中红外等光谱技术的互补手段,研究汽油组成的特性及鉴别其结构的细微变化等.     

基于空白KBr压片的红外光谱制样方法

以空白KBr片代替晶体盐窗,模拟红外光谱液体池,提出了基于空白KBr压片的红外光谱制样方法．针对不同样品的特点,分别采用浸渍法、液膜法和涂膜法制备样品,可以获得与常规制样法质量相当的红外光谱图,且还能弥补常规制样法的一些不足,扩大红外光谱的检测范围．提高了工作效率,是一种廉价适用、值得推广的红外光谱制样方法．     

拉伸羊毛分子结构的显微红外光谱分析

应用显微镜偏振红外光谱法分析了拉伸羊毛纤维大分子结构的变化，通过对特征谱带的分析，得到了羊毛大分子链段结构和大分子构象随拉伸率的变化情况；由此可知，显微红外光谱具有很高的灵敏度，应用偏振显微红外光谱可以准确地对纤维大分子结构的变化进行分析和表征。     

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.     

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.     

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.     

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.     

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-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the