壳聚糖在真丝针织物抗皱整理中的应用

采用纳米级TiO2作为壳聚糖柠檬酸溶解的催化剂,对真丝针织物进行抗皱整理.实验结果表明,经壳聚糖柠檬酸溶解整理后,真丝针织物的折皱回复角由207.66°提高到286.88°,并且整理后不影响真丝织物的其他服用性能.     

染色真丝织物的柠檬酸防皱整理

分别采用柠檬酸、2D树脂、柠檬酸／三乙醇胺整理真丝织物，分析了它们对真丝织物折皱回复角、染色牢度、服用性能及色差值的影响程度，同时分析了添加剂三乙醇胺的作用．结果表明，三乙醇胺能增加织物对阴离子染料的亲和力，明显改善整理织物的变色；可以提高真丝织物的湿折皱回复角，真丝织物的强力损失也得到降低．     

真丝织物银抗菌整理

先用硝酸银溶液整理真丝织物,再用在位还原法在丝织物上生成银颗粒,赋予织物优良的抗菌性能.考察了不同消解介质对织物上银含量测定的影响,测定了整理后织物的白度、耐洗牢度及抗菌效果.实验结果表明：用HNO3/H2O2/HCL介质消解真丝,可以得到稳定的测定结果;使用质量浓度为2~8 mg/L的整理液整理时,织物白度受到的影响小,抗菌能力优异,织物上银的耐洗牢度强.     

真丝织物径等离子体处理及丙烯酰胺接枝的研究

本文提出采用低温等离子体预处理后再对真丝织物进行丙烯酰胺单体接枝改性,从而改善织物的服用性能。本文通过实验确定了经等离子体预处理有利于提高织物的丙烯酰胺接枝效果,同时也得到了真丝织物的接枝处理最优工艺。经复合处理后,真丝织物的接枝率为9%左右,其织物吸水性能、染色性能及抗皱性能均明显提高,但其断裂强力有一定幅度下降。     

真丝绸双活性基染料染色应用探讨

通过分析固色碱剂种类及其用量、中性盐用量、染色温度等因素对双活性基染料在蚕丝织物染色中的影响,初步探讨该染料在真丝织物上的键合性能.研究表明:该染料对真丝染色较对棉的条件温和得多,在温度为80℃、pH值为9.0时,对真丝有较好的染色效果,且能满足生产需要的牢度指标.     

SM丝绸防灰伤助剂

真丝双绉是真丝织物中服用性能良好的高档品种之一,畅销国内外市场。但是真丝织物往往在染色过程中受到损伤,特别是双绉染深色,如元色、藏兰、咖啡时容易产生“灰伤”。“灰伤”非但使丝素受到损伤,而且使纤维表面分裂,从而在织物表面产生     

涤纶长丝织物吸湿排汗的整理工艺

应用整理剂HF-1通过后整理方式赋予涤纶长丝织物吸湿排汗性能,提高涤纶织物的穿着舒适性,改善织物手感和服用性能.通过对涤纶织物吸湿排汗性能整理工艺的研究,确定出涤纶织物应用整理剂HF-1进行吸湿排汗整理的最佳工艺条件.对整理后织物的毛细效应综合值、导湿综合值、干燥速率及耐洗性进行测试,结果表明,经整理剂HF-1整理后的...     

蚕丝／棉复合丝牛仔布的工艺设计

从蚕丝／棉复合丝的结构特征及其应用于丝牛仔布织物设计时的生产工艺流程、工艺参数确定、后整理技术等方面论述了真丝复合新材料及其牛仔布织物的设计与品种开发．     

纳米防螨抗菌真丝针织服装的研究

研究纳米无机材料的抗菌防螨性能，开发新型的功能性针织服装，介绍了纳米防螨抗菌剂的配制过程和纳米防螨抗菌织物的生产工艺流程，并通过涂层浸轧方法进行整理．实验表明，经纳米材料整理的真丝针织服装对螨虫有较高的驱避效果，对大肠杆菌、金黄色葡萄球菌和白色念珠菌有很高的抑制作用、     

PET织物纳米TiO2抗紫外线整理及性能研究

通过对纯PET长丝织物浸轧焙烘纳米TiO2整理液,使织物表面附着纳米TiO2颗粒,并对织物表面形貌用SEM观察,发现纤维表面覆盖有一层纳米级颗粒,呈局部分散与团聚的不均匀状态.用紫外线防护系统测试织物,发现整理后织物具有较好的抗紫外线效果,且当纳米TiO2含量在1.5%时,抗紫外线效果最好.对织物皂洗20次后测试其抗紫外线效果,发现织物具有较好的耐洗性.对整理前后织物服用性能测试对比发现,纳米TiO2整理织物对织物服用性能几乎无影响.     

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.     

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.     

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