羽绒制品服用性能研究方法与结果分析

本文探讨了天然羽绒集合体的有关性能。在研究中,采用先进的电子式压缩弹性仪和热传递测定仪,测定集合体在不同含绒率、填充量条件下与压缩性能、热传递性能间关系,为合理选择含绒率和填充量提供依据。     

微胞式羽绒填充服的保暖性分析

羽绒因具有轻柔、蓬松和低导热系数的优点而成为轻薄保暖服装的首选填充原料.基于微胞式羽绒填充服的微胞结构,探讨了微胞排列密度、微胞形状、微胞厚度、微胞充绒量对羽绒填充服保暖性的影响.研究结果表明,微胞排列密度对羽绒填充服的保暖性影响为非线性,且条状微胞结构较格状微胞结构羽绒分布离散性小,体积密度小、保暖性好;当充绒量为10g/(30cm×30cm)时,羽绒填充服保暖性能达到最优.     

动物绒絮片保暖性能及其随压力、风速的变化

利用自主研发的技术制作了4种动物绒纤维絮片和3种动物绒与鸭绒的混纤絮片,对絮片进行传导、压缩、透风、变风速保温性能测试.研究结果表明:影响高蓬松性絮片传导散热性能的主要因素是絮片厚度,且在温差一定时,絮片保暖能力饱和值对应一个最小厚度值;牦牛绒絮片的蓬松度最高、抗压缩能力最强、阻热性最好;混入羽绒纤维后,动物绒系列絮片的蓬松度提高、对流散热量降低.     

木棉/羽绒/羽绒飞丝的混纤絮料的服用性能测试分析

利用自主开发的专利技术制作了木棉/羽绒/羽绒飞丝的混纤系列絮料,参照有关标准测试了其保暖性、蓬松性、压缩弹性,分析研究了这些性能与木棉质量分数、羽绒及羽绒飞丝质量分数之间的关系,得出如下结论:木棉质量分数越高絮料的保暖性能越好;3种纤维的压缩弹性优劣排序为:羽绒>羽绒飞丝>木棉.     

成膜条件对聚氨酯微孔膜性能的影响

采用单因素的分析方法研究质量分数、预干燥时间、涂层厚度、凝固浴温度等成膜参数与以N，N二甲基甲酰胺（DMF）为溶剂的溶剂型聚氨酯（PU）的成膜性能，包括薄膜的孔隙率、厚度、透湿性能（WVP）的关系．结果表明，随PU质量分数的增大，膜厚度与平方米质量都在增加且趋势相似，而膜的孔隙率和透湿量呈下降趋势；薄膜厚度随涂层厚度的增加而线性增加；凝固浴温度升高的过程中，透湿量波动明显；随预干燥时间的延长，透湿量缓步下降．     

常规毛圈织物的服用舒适性能研究

毛圈组织是针织物组织中最常见的一种花色组织,其独有的毛圈特征,可形成具有良好舒适性能的针织物。实验以常规毛圈织物为对象,通过分析毛圈大小和毛圈密度这两个参数,研究其对毛圈织物服用舒适性能产生的影响。服用舒适性能测试,包括基本力学、耐磨性、透湿性、透气性和保暖性5个方面。实验结果表明,毛圈织物密度和大小对织物拉伸断裂强力、透湿性、耐磨性和保暖性有重要影响。     

超细蚕丝粉体对聚氨酯合成革透湿性的影响

为改善聚氨酯合成革的服装穿着舒适性,本文采用超细蚕丝粉体改性聚氨酯合成革,力求提高合成革的透湿量.试验发现,将超细蚕丝粉体改性聚氨酯合成革后,合成革的透湿性明显改善.透湿量随着蚕丝粉体量的增加、透湿时间的延长而增大,且合成革的厚度对其透湿量也产生一定影响,它们之间呈现一定的三维曲面关系.     

高压下黄铜矿CuInS2的电子结构、弹性参数、热学和电学性质的第一性研究

采用第一性原理方法,研究了高压下黄铜矿半导体CuInS2的电子结构、弹性参数、热学和电学性质.研究结果表明CuInS2是直接能隙半导体,其能隙值随着压强的增大而增大,能隙随压强变化的一阶系数值为54.31 meV/GPa;其弹性参数满足高压下的机械稳定性的条件,并且材料的韧性随着压强的增加而增强. 基于弹性参数计算了体系的德拜温度和最小热导率,德拜温度随着压强的增大而逐渐减小,而最小热导率随着压强的增加而增大. 通过对塞贝克系数和功率因子比弛豫时间的研究,发现增加压强和调节载流子的浓度可以改善CuInS2的电学性能.     

棉织物紧度对其热湿舒适性能的影响

采用18.2tex纯棉纱线为原料,试织了6种不同紧度的织物,探讨了织物紧度对其热湿舒适性能的影响规律.研究结果表明,随着织物紧度的增加,织物的保暖性先减小后增大,透气性会迅速减小直至紧度增大到一定值后变化趋于平稳,吸湿和透湿性在紧度较小时较好.研究结果为设计开发新产品提供了理论依据.     

天丝在拉舍尔毛毯上的开发应用

自行制作了4种拉舍尔经编毛毯织物试样,并对试样的风格、透气性、保暖性、抗静电性、透湿性和失重率进行测试.研究结果表明,天丝纤维可改善拉舍尔毛毯的外观风格、热湿舒适性及抗静电性能,且毛毯织物耐用不易破损;天丝/腈纶混纺拉舍尔毛毯对传统拉舍尔毛毯的综合性能也有一定的提高.天丝在新型拉舍尔毛毯的开发应用上具有一定的价值.     

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.     

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.     

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