塑料粒料的包装及运输在中国的前景

德国ＺＥＰＰＥＬＩＮ公司的专家Ｗｏｌｆｇａｎｇ Ｋｒａｎｍｂｒｏｘｃｋ对中国粒料的包装运输现状作了分析。指出如何大量甚至全部采用袋装运输３方式是不合适的,应探讨采用散装运输方式的可行性。     

Study of the effect of enzymatic washing parameters on the bagging properties of denim fabric with Taguchi method

This study aims to evaluate the effect of neutral enzyme washing on the bagging behavior of denim garments and optimize the conditions of this treatment using the Taguchi design. Six types of fabrics were selected with the same weaves and different characteristics. These samples were washed with a neutral cellulase enzyme under different conditions such as enzyme concentration (0.3%, 2%, and 4%), temperature (30, 45, and 65°C), time (15, 45, 75 min), and material to liquor ratio (1:5, 1:8, and 1:10). To evaluate the effect of enzymatic washing on the bagging behavior, we investigated the residual bagging height, the bagging fatigue percentage, the bagging resistance, and the bagging recovery percentage. Thanks to the main effects plots the influencing factors were obtained and using the signal-to-noise ratio diagram, the optimum conditions were determined. The obtained results showed that these bagging properties were affected by the washing conditions and that the most important factors are the characteristics of the samples such as the percentage of elastane and polyester fibers, weight and weft density, and enzyme concentration. The process parameters were optimized and the optimized washing conditions for the best value were 0.3% enzyme concentration at 45°C for 75 min, in material to liquor ratio of 1:8. Concerning the factor of the sample, the results show that the increase of the percentage of elastane or polyester fibers in the composition of denim fabric decreases the problem of deformation and bagging. Therefore it is recommended to add a percentage of these fibers in the construction of the denim to improve the bagging recovery. Thus, the increase in the weft density minimizes that bagging phenomen appears.     

乳清蛋白膜对花生储藏品质影响研究

采用乳清蛋白涂膜与乳清蛋白包袋对花生仁的储藏效果进行试验,发现乳清蛋白涂膜可显著降低花生仁在储藏期间脂肪氧化,储藏效果最佳,而包袋组对花生仁储藏效果略好于对照组.两个试验组的花生仁过氧化值分别低于对照组38％ ～ 68％、0.5％ ～21％,酸价比对照组分别低7％～11％、1％～4％.     

果袋种类对‘阳光玫瑰’果实品质的影响

在葡萄栽培中,通常用果实套袋来防止日灼伤害,不同果袋的透光和滤光效果不同,对果实品质的影响也不同。该研究以‘阳光玫瑰’为试材,对果实进行蓝色、绿色、半透明、白色和全遮光套袋处理,比较了套袋后‘阳光玫瑰’果实品质的差异。结果表明:白色木浆纸袋处理的‘阳光玫瑰’果粒最大,可溶性固形物含量达17.01%,可溶性糖含量达90.42 mg·g^-1,可滴定酸含量仅0.56%,固酸比为30.38,口感最好,转色完全,果实呈黄色,果实总酚与其他处理不显著。在果实原花色苷指标中以蓝色袋处理的含量最高,其他果袋没有显著区别。综合来看,以白色袋处理的‘阳光玫瑰’品质最好,可替代常用的绿色果袋使用。     

全自动包装码垛生产线中自动上袋机组的设计

本文介绍了一种全自动包装码垛生产线中自动上袋机组的结构特点、工作原理和控制系统的设计。     

Casecoder喷码机在磷铵包装中的应用

介绍C asecoder喷码机的工作原理、常用指令、正常操作及故障分析处理,并对喷码机选购、使用中的若干问题提出有益的意见。     

集成学习在Fashion-MINIST服饰识别中的应用

在现如今的机器学习领域,集成学习方法作为一种提高模型性能的策略,被广泛应用在各种机器学习模型当中。集成学习的核心概念是综合多个分类器的结果,通过某种集成策略,来得到一个准确率更高的模型。本文依据具体实例"Fashion-MINIST服饰分类数据集",分别采用了kNN模型,logistic模型,以及bagging集成kNN,lo-gistic模型,比较分析了不同模型在该数据集上的差异性以及优缺点。     

Effect of different light transmittance paper bags on fruit quality and antioxidant capacity in loquat

BACKGROUND: Bagging has been widely used to improve the commercial value of fruit. The purpose of this study was to evaluate the effects of different light transmittance paper bags on the quality and antioxidant capacity of loquat fruit. Two loquat cultivars, Baiyu and Ninghaibai (Eriobotrya japonica Lindl.), were used for materials. One‐layered white paper bags (OWPB) with ～50% light transmittance and two‐layered paper bags with a black inner layer and a grey outer layer (TGDPB) with ～0% light transmittance were used as treatments and unbagged fruits were used as the control (CK) in this experiment. Fruit quality was determined by physicochemical characteristics, the quantity of sugar, total phenolic, flavonoid, carotenoid and vitamin C. The antioxidant capacities of the methanol extracted from the pulp were tested using three different assays. RESULTS: The results showed that bagging decreased the weight of fruit but promoted the appearance of loquat fruits. The total sugar content in the fruit bagged with OWPB was higher than in controls and in fruit bagged with TGDPB. The total phenolic and flavonoid contents were decreased by both bagging treatments, with the lowest occurring in the fruit bagged with TGDPB. Bagging also decreased the total antioxidant capacity of the fruit pulp, which was again lower in TGDPB‐treated fruits than in those bagged using OWPB. Correlation analysis showed a linear relationship between total antioxidant capacity and the content of total phenolic and flavonoid. CONCLUSION: The results showed that different light transmittance bags had different effects on fruit quality and antioxidant capacity. In particular, bags with low light transmittance (TGDPB) decreased the inner quality and total antioxidant capacity of loquat fruit. All results indicated that bagging with OWPB was more suitable for maintaining the quality of the loquat fruit than bagging with TGDPB. Copyright © 2010 Society of Chemical Industry     

二维bagging集成支持向量机进行网络故障诊断

由于网络故障信息通常表现出不确定、复杂的特点并且对故障特征的描述也多是非完备的,运用支持向量机进行故障诊断经常不能达到其最优性能.本文提出一种新颖的二维bagging集成支持向量机,显著提高了传统支持向量机进行网络故障诊断的精度.实验结果验证了该方法的准确性和有效性.     

网页文本的组合分类研究

在文本分类中,单分器具有某些缺点,如分类模型对样本具有敏感性,并且其分类精度难以提高.本文以朴素贝叶斯为基分类器,利用bagging与boosting技术提出了两种组合分类算法,并将其用于网页文本的自动分类,结果证明组合分类系统提高了分类准确率.