棉毛混纺织物前处理工艺探讨

棉毛混纺织物前处理采用酶煮练加双氧水重漂的工艺，生产的半制品能满足后道染色的需要，并能最终生产出风格优良的产品。     

纯棉纱卡冷堆前处理工艺

采用双氧水与烧碱分浴浸轧冷堆加常规氧漂工艺对纯棉纱卡进行前处理，解决了多年来纯棉纱卡平幅前处理中卷边、折皱等难题，提高了产品的质量，降低了能耗，开辟了纯棉纱卡冷堆练漂工艺新途径。     

An optimized pretreatment method in the analysis of negative plate of lead acid battery

The composition of the plate in lead acid battery plays a vital role on battery performance. Therefore, controlling and monitoring of plate composition is utmost important in order to attain required battery performance. While monitoring negative plate, it has to be ensured that they are not exposed to air, which would otherwise result in Pb oxidation; thereby affecting the accuracy of the test data. Nevertheless, published information is scarce on the “pretreatment and preservation of the negative plates”. The objective of this study is to develop a suitable procedure to “preserve and pretreat the negative plate” prior to chemical composition analysis. A host of experimental parameters like immersion time in water, effect of drying reagent and air drying time were studied. Two drying solvents; namely, methanol and acetone were studied to evaluate their suitability.     

涤棉织物精练、湿堆丝光联合机的设计和应用

对一套原专门用于涤粘中长仿毛产品前处理的进口联合机进行改进,使之适用于涤棉混纺织物的前处理,获得了满意的效果。本文对联合机的工艺,包括烧毛、退浆、精练、湿堆丝光和漂白以及应用情况作了介绍。     

冷轧堆前处理工艺中几个问题的讨论

本文结合生产实践对纯棉织物冷轧堆前处理工艺的文献资料作了扼要的综述。并在小样试验研究与实践的基础上，针对提高毛效控讨了杂质去除的原理；进而将整个工艺过程归纳为：轧卷堆──热处理──水洗三个相互紧密衔接的阶段，并提出与此相对应的主要作用为：溶胀与氧化──化学降解、皂化与乳化──净洗。此外还发现了如下特点：经冷轧堆前处理的棉纤维，其初生胞壁受损程度小于煮布锅精练的及氯漂的常规工艺，并且基本上无潜在的损伤。     

基于逻辑输入样本的神经网络算法

本文对确定多层前向神经网络权提出了一种基于逻辑输入样本的直接算法。对于逻辑输入样本,该算法只需一个三层网络实现;否则,需在输入层和隐层间引入一个预处理层以完成输入样本向逻辑向量的转化。由于不引入误差能量函数,该算法避免了BP算法训练过程出现的收敛速度慢和误差陷入局部极小问题。本文还对该算法的正确性作了详细论证并以XOR问题解释其计算过程。     

A coupled photocatalytic-biological process for degradation of 1-amino-8-naphthol-3, 6-disulfonic acid (H-acid)

 There has been growing emphasis on the development of coupled treatment systems (e.g., advanced oxidation–biological) for treating poorly biodegradable wastewater. An attempt has been made in the present study to couple photocatalytic (TiO₂/UV) pretreatment with conventional activated sludge process to achieve improvement in the biodegradation of H-acid. The combination of titanium dioxide and UV light has been known to generate strong oxidants that degrade several organic pollutants into carbon dioxide via the formation of some intermediates. The intermediates formed may undergo biodegradation readily. Accordingly, photodegradation experiments were carried out initially at an optimized TiO₂ dose and the minimum pretreatment time required for transforming H-acid was identified. For this purpose, UV–vis spectrophotometry and high-performance liquid chromatography (HPLC) were extensively used. Subsequently, it was attempted to biodegrade untreated and pretreated H-acid using activated sludge from the textile industry acclimatized to H-acid. It was found that photocatalytic pretreatment of H-acid for 30 min, during which period approximately 8–10% chemical oxygen demand (COD) removal occurred, can be coupled to second-stage biological treatment for achieving enhanced biodegradation of H-acid.     

酸性蛋白酶在羊毛染色前处理中的应用

羊毛纤维及羊毛织物通过酸性蛋白酶处理，可获得减量率为1％－2％，且纤维强度并未显著下降的最佳工艺条件。从扫描电镜照片发现，经处理的羊毛纤维表面磷片明显受到破坏，棱角变得圆滑。处理后羊毛织物的上染率和上染速率都有所提高。     

γ谱分析样品的采集与制备

本文主要介绍采集和制备γ谱分析样品时应该考虑和遵循的基本原则，制定和执行统一的采样计划、方法和具体操作步骤；完整的样品包装、运输和贮存程序，样品量的确定方法，样品预处理的基本程序方法；以及制备样品时应满足的要求等。概要介绍了空气，土壤，水，食物等环境样品与生物样品采集与制备的主要方法和有关注意事项。