陶土坩埚玻璃拉丝机用红外测控仪的研制

介绍了对陶土坩埚玻璃拉丝机加装红外测控仪的原理、方法及试用效果。     

光纤流量计的稳定性分析

分析了反射式光纤涡街流量计在管道内流体的流动为层流和紊流时光纤的受迫振动，分析表明在层流和条流状态下，光纤所受张力与单位光纤长度的质量比满足Ｔ／ρ＞＞（０．４ｖＤ／ｄ）￣２时，光纤的振动及反射回到光纤的光强变化只与外力变化频率有关。实验结果已证实了本文分析的正确性。     

吐鲁番阿斯塔那—哈拉和卓古墓群出土古纸研究

为研究新疆古代的纸和造纸工艺,本文采用外观观察和纤维分析等方法,鉴定了一批吐鲁番哈拉和卓古墓群出土的古纸,其年代处于东晋到唐代之间。分析表明,这些纸张的原料主要是苎麻、大麻和构皮,纸张的生产方法有浇纸法造纸和抄纸法造纸两种,加工方法有单面施胶、双面施胶、浆内施胶加填、染色技艺等多种方法,说明当时加工纸技术已普遍应用于新疆的各种纸张。本文对研究纸和造纸法在新疆地区的流传有一定的意义。     

新型含硅表面活性剂的制备、性能和应用

硅氧烷表面活性剂是一类很有特色的表面活性剂，它们不仅在水溶液中而且在有机溶液中都表现了很高的表面活性。该类产品合成路线多样、品种繁多，逐渐取得了广泛的应用。本文将系统地介绍这类表面活性剂的制备、性能和应用。     

特强聚酯缝纫线生产工艺探讨

本文结合生产实际,从原料选择,工艺流程及设备,各工序工艺设计及要求等,对特强聚酯缝纫线纺纱生产工艺进行了探讨.     

Formulas for stationary planar fibre processes III – intersections with fibre systems

In this paper we investigate the distribution of the periodogram, respectively, the periodogram matrix for stationary random sequences. These .distributions are consid¬ered in the case of a fixed frequency as well as in the case of a finite number of frequencies for Gaussian sequences and for sequences of independent random variables. The exact distribution is obtained in the case of a fixed frequence for one-dimensional GAUSsian sequences. Asymptotic expansions, respectively, the rate of convergence to the asymptotic distribution are given in the case mentioned above     

高性能纤维的低温等离子体表面改性

本文介绍了用于纤维材料的低温等离子体表面改性技术,并对其在高性能纤维表面粘着性改善中的应用进行论述。     

涤纶短纤仿毛啥味呢的生产与探讨

论述了涤纶短纤仿毛啥味呢的生产实践。对生产的主要工艺进行了分析。     

弹力织物服用性能研究

对几只弹力织物试样进行测试 ,采用一些数学方法对织物性能进行分析 ,为这一类织物的设计和服装选料提供参考依据     

Estimation of Wood Fibre Length Distributions from Censored Data through an EM Algorithm

Abstract.  An expectation maximization (EM) algorithm is proposed to find fibre length distributions in standing trees. The available data come from cylindric wood samples (increment cores). The sample contains uncut fibres as well as fibres cut once or twice. The sample contains not only fibres, but also other cells, the so-called 'fines'. The lengths are measured by an automatic fibre-analyser, which is not able to distinguish fines from fibres and cannot tell if a cell has been cut. The data thus come from a censored version of a mixture of the fine and fibre length distributions in the tree. The parameters of the length distributions are estimated by a stochastic version of the EM algorithm, and an estimate of the corresponding covariance matrix is derived. The method is applied to data from northern Sweden. A simulation study is also presented. The method works well for sample sizes commonly obtained from increment cores.