羊毛纤维重复扭转疲劳性能的研究

在自行设计的羊纤维扭转疲劳试验仪上测试了品质支数为７０的羊毛的重复扭转疲劳性能。得到了羊毛扭转疲劳至断裂的循环次数Ｎ与扭转角θ、张力Ｐ的关系，分析了纤维重复扭转性能的规律，并提出了基准测试参数。     

羊毛纤维重复弯曲疲劳性能的研究

利用自已设计的单纤维重复弯曲疲劳试验仪测试了4.03dtex澳毛的重复弯曲疲劳性能。得到的羊毛纤维重复弯曲疲劳寿命弯曲角2θ、预加张应力σ关系与固体疲劳强度理论方程反映的规律符合一致。     

织物起球与纤维力学性能的关系

在影响织物起球性能的各种纤维性能中，除纤维的几何形态（线密度、截面形状、长度等）之外，经过测试研究分析筛选出来的主要影响因素是纤维的重复弯曲疲劳强度、重复扭转疲劳强度、拉伸断裂相对强度、拉伸断裂伸长率和拉伸初始模量．后者与织物的手感也有很密切的关系．本文研制了学纤维重复弯曲疲劳测试仪、单纤维重复扭转疲劳测试仪，优选了它们的测试条件参数，先后测试了绵羊毛，山羊绒、马海毛等纤维和２０余种化学纤维的性能，并经过优选工艺，对由１３种纤维纯纺或混纺生产的７种毛型梭织物进行了起球规律的测试、试穿和研究，发现在研究中织物的穿着起球效果与客观测试中随摩擦次数球粒数变化的曲线下积分值相关最密切．最后对纤维五种力学性能与织物起球曲线下积分值进行了主成分析和多元回归分析，获得了由纤维力学性能评价织物起球性能的预测方程式．     

纺织纤维重复弯曲疲劳性能的研究

在测试了多种纺织纤维重复弯曲疲劳寿命,并与相应织物的抗起球性能作了对比.所用的纤维重复弯曲疲劳测试方法及参数可作为标准测试的参考.     

纺织纤维重复弯曲疲劳性能的研究

在对多种纺织纤维重复弯曲疲劳寿命测试的基础上,作了对比研究,并与相应织物的抗起球性能作了对比。所用的纤维重复弯曲疲劳测试方法及参数可作为标准测试的参考。     

功能性羊毛纤维的制备

以钛酸四丁酯为前驱体,在水热环境中直接将纳米二氧化钛负载到羊毛纤维表面,使用扫描和透射电镜、红外光谱、热重和漫反射光谱测试技术对羊毛纤维改性前后表面形貌、结构、热学和光学性能进行了表征,并测定羊毛纤维拉伸、表面摩擦和自清洁性能.研究结果表明,钛酸四丁酯合成的锐钛矿型纳米二氧化钛颗粒平均粒径约5nm,通过化学键接枝在羊毛纤维表面.较未处理羊毛纤维,改性后的羊毛纤维热学性能变化不明显,吸收紫外线能力有所增强,断裂伸长率有所增加,摩擦因数增大而摩擦效应减小,具有光催化自清洁性能.     

壳聚糖整理羊毛织物透湿性能研究

使用双氧水在超声波辅助条件下制备了不同分子质量的壳聚糖,用黏度法测定了分子量,并对羊毛织物进行整理.借助SEM、FTIR分析羊毛纤维表面形貌和结构,并测试了羊毛织物透湿性能.结果表明,借助柠檬酸的桥梁作用,壳聚糖和羊毛纤维发生了化学反应.当壳聚糖分子质量为5×104、质量分数为1%时处理羊毛织物,其透湿性能最好.     

芳纶纤维弯曲疲劳和扭转疲劳的测试分析

对芳纶纤维的弯曲和扭转疲劳进行了测试分析,并与其它纤维进行比较,对它们的破坏机理作了探讨.     

酶复合整理改善羊毛织物的防缩性能

为解决单独用蛋白酶处理羊毛织物时防缩效果不明显且强力降低的问题,提出用碱性蛋白酶对羊毛织物进行处理,部分去除羊毛纤维的鳞片,在此基础上再用谷氨酰胺转胺酶对羊毛进行处理,实现羊毛纤维蛋白质分子之间的交联.扫描了整理前后羊毛织物的红外光谱图,这种酶复合整理工艺使得羊毛织物的防缩性能显著改善,而强力和伸长性能基本保持不变,从而更具应用价值.     

阳离子丝素助剂改性羊毛及改性纤维染色性能

用自制的阳离子改性丝素助剂整理羊毛纤维，研究整理工艺条件对羊毛纤维染色性能的影响．结果表明，改性的丝素助剂整理的羊毛纤维显著改善了对活性染料的染色性能，同时整理的羊毛织物防缩抗鹱性能提高．     

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