纱线与织物风格的综合评价系统与表征方法研究——系统特征比较与基本参数确定

介绍了自行设计和研发的纱线与织物性能测量装置的系统特征和基本参数。实验研究表明该测量装置通过一次抽拔试样，可原位综合测量纱线或织物的质量、弯曲、摩擦、拉伸、松弛、压缩及剪切等力学性能，由此实现试样综合风格定量化的表征。     

不同测试条件对羊毛／莱卡包芯纱拉伸性能的影响

通过正交试验，分析拉伸速度、夹持长度、纱线线密度TF等因素对羊毛／莱卡包芯纱拉伸性能的影响．实验结果表明，影响纱线拉伸断裂强度程度大小依次为纱线线密度、拉伸速度、夹持长度；同种线密度的羊毛／莱卡包芯纱，在相同拉伸速度的条件下，随着夹持长度的增大，羊毛／莱卡包芯纱的断裂强力减小；在相同拉伸速度的条件下，包芯纱的断裂伸长率随着夹持长度增大而减小．     

机织物及其纱线弯曲性能的实验研究

应用织物及纱线弯曲刚度的理论研究成果，借助实验手段考察研究了织物及其中纱线的弯曲性能与纤维线密度，纱线结构及织物结构的关系。获得如下主要结论：纱线的弯曲刚度与纱线线密度的平方线性相关，二者的单相关系数在0．70以上；织物中纱线的弯曲刚度还与织物紧度、纱线捻系数，织造和染整加工中的张力等因素有关，织物的弯曲滞后量主要取决于织物的弯曲刚度。     

螯合分散剂在亚麻粗纱煮练中的作用

亚麻织物以其优良的服装性能，深受广大消费者青睐．但传统的煮练工艺对亚麻纱的强力损伤大，纱线柔软性差．本文首先在理论上分析研究了传统煮练工艺对亚麻纱强力损伤的机理及用柔软剂和螯合分散剂保护纱线强力的机理．然后采用实验对比分析的方法，研究探讨了上述两种助剂的用量对亚麻纱性能的影响．实验结果表明，在亚麻粗纱煮练工艺中使用柔软剂和螯合分散剂，可以提高亚麻纱的柔软性和可纺性，进而使其强力得到提高，但若加入过多的柔软剂，反而使细纱平均强度下降，强度不匀情况恶化．     

玻璃纤维纱线编织过程中纤维损伤程度的探讨

主要探讨针织工艺对玻璃纤维损伤程度的影响，提出了玻璃纤维损伤程度的定量评价方法，并分析讨论了在不同玻璃纤维纱线和不同组织结构的情况下，纤维损伤率(或纱线损伤率)随线圈长度的变化趋势。通过研究发现，不管纱线和组织结构如何，编织玻璃纤维纱线时都有一个最佳工艺点，在该点纤维的损伤最小，这为选择合理的玻璃纤维纱线编织工艺提供了依据，具有很大的实用价值。     

芯丝预加张力对摩擦包芯纱强力的影响

纺制摩擦包芯纱是提高摩擦纱强力的一个有效手段。该对摩擦包芯纱 加捻过程进行了动力学分析，获得了加捻过程中纱线转动速度n(x）和捻度T（x）的变化规律。以棉纤维为外包纤维，对涤纶、锦纶6及粘胶长丝等三种不同材料的芯丝对芯丝预加张力对摩擦包芯纱强力影响的问题进行了试验研究，利用理论研究的结果对试验规律进行了分析和解释。     

机械防护服装的受力模型

由高强性能织物制成的机械防护服装,由于其轻质和高冲击损伤容限,具有很好的机械防护性能.机械防护服装的机械防护性能主要取决于各方面的力学性能,包括:纤维的拉伸性能、取向度、纱线的初始模量、断裂强度和纱线上的应力波传播速度,织物的线密度、组织结构、服装的层数,剪裁和接缝的方法等.从能量吸收的角度,分析机械防护服装受强力冲击时的能量吸收和波传播的速度,提出简单的计算方法,建立机械防护服装的受力模型.     

风电叶片玻璃纤维布的疲劳性能实验研究

利用拉伸试验机、疲劳试验机等仪器对风电叶片复合材料的玻璃纤维布的疲劳性能进行试验研究,通过分析不同损伤程度的玻璃纤维布对玻璃纤维层板疲劳性能的影响,确定其疲劳性能参数,结果表明:玻璃纤维布损伤的区域在疲劳试验中优先发生分层,随着疲劳试验的延长优先发生断裂,玻璃纤维布损伤程度是影响玻璃纤维复合板疲劳性能的主要因素之一。     

E/D低介电常数玻璃纤维混并织物的工艺设计及技术分析

玻璃纤维几乎没有塑性伸长,缓弹性伸长也极小,纤维在本质上都是脆性纤维且耐弯曲性较差,这决定着玻璃纤维的纺织特性与一般有机纤维不同,其纺织工艺和所用的加工设备与化学纤维也有所差别.在进行电子布的加工工艺设计时,采用缩短加工工艺流程的技术措施,使织物在加工过程中尽可能减少纱线弯折、摩擦和伸长,保证了产品的品质.同时对在织造过程中出现的技术和质量管理上的问题,提出了解决方案,指出电子布单重的稳定性与经纬纱密度稳定性有一定关系,同时也与打纬是否均匀密切相关.     

热压工艺对GF/PET摩擦纺混纤纱浸渍效果的影响

摩擦纺包芯纱混纤法加工热塑性复合材料由于各方面的优点深受关注,而基体树脂对增强纤维的浸渍问题一直是热塑性树脂复合材料的加工难点.这里通过拉伸强力和截面观察研究了不同的成型条件对聚酯(PET)基体浸渍玻璃纤维(GF)增强纤维效果的影响,结果表明,成型条件对浸渍效果的影响很大.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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。     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

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

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.     

Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices, an interest in LBS (Location Based Service) is arising. To provide location based service, tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then, store and manage have been studied. In this paper, we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques, we update the MODBMS when moving object arrived at a street intersection or a curved road which is represented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique, location data that are corresponding to the node in topology are stored, thus reduce the number of update and amount of data. Also in case predicting the location,because topology are used as well as existing location information, accuracy for prediction is increased than applying linear function or spline function.