用滑石控制做脂和胶粘物

滑石是一种天然的添加剂，目前滑石在树脂和胶粘物的控制方面的应用已遍及全世界，每年有30万t的滑石用于树脂和胶粘物的控制，这一用量还在继续增加。     

胶粘物和树脂沉积的成因及控制技术

简要介绍了胶粘物和树脂沉积的成因及控制胶粘物和树脂沉积的方法。     

一种评价树脂及胶粘物动态析出与沉积的装置

本文主要介绍了一种基于光学测量的方法评价树脂和胶粘物析出装置的主要设计原理,各部分的构造以及所采用的光学传感器的校正,并利用其对一种从GP(磨石磨木浆)中分离出来的DCS在不同剪切速率下的树脂析出情况进行了评价,结果表明该装置可能是一种有助于控制树脂障碍和胶粘物的有用工具.     

如何合理选择固着剂使纸机正常运行

纤维的回收利用以及造纸用新鲜水的不断减少,导致了添加剂使用效率的降低、纸张性能的降低和纸机运行速度的下降.其原因是:胶粘物的不断积累.除非这些溶解性污染从造纸系统中不断被去除,否则它们会不断积累并导致沉积发生,降低车速.目前胶粘物去除的方法主要是在胶粘物或树脂类物质絮聚前将树脂或胶粘物固定在纤维上,或者通过采用某些聚合物将胶粘物包裹起来,防止它们进行絮聚.     

新闻纸厂胶粘物组分的分离与分析

对新闻纸厂网前筛筛板上的沉积胶粘物进行了分离与分析.结果表明,以聚醋酸乙烯酯和聚丙烯酸酯为代表的人工合成聚合物以及机械浆中的木材树脂是产生胶粘物的根本来源,但它们在胶粘物沉积中的含量只有约5%.胶粘物沉积中大部是无粘性的碳酸钙和细小纤维,说明碳酸钙等物质会与具有粘性的树脂类物质粘附在一起形成大量的沉积物.     

纸机胶粘物和树脂沉积的控制方法

本文简要介绍了控制纸机污染物,如胶粘物和木材树脂沉积的3种化学方法及沉积控制技术的最新进展.     

回用过程水中胶体物的凝聚行为

研究了白水中的微胶粘物和树脂凝聚成较大颗粒和沉淀物的行为,并且测定了颗粒尺寸。如果微胶粘物浓度足够高,它们就会在过程水中循环。稳定的胶体物质的粒径取决于微胶粘物粒子间的相互吸引力和剪切作用导致的干扰之间的平衡。有效测定微小有机物累积(EMMA)潜能(分级测定胶体物质的粒径)能够引导我们探索导致沉淀的粒径范围。树脂和微胶粘物会产生相互干扰,从而降低其稳定性,这就能解释为什么混合机械浆和二次纤维纸浆会造成罕见高发的树脂沉积问题。     

纸机胶粘物和木材树脂的沉积控制方法及其新进展

本文简要介绍了控制纸机污染物,如胶粘物和木材树脂产生沉积的三种化学方法及沉积控制技术的最新进展.     

有效控制胶粘物的酶制剂-去黏剂组合技术

该文研究了一种控制胶粘物的专利酶制剂和先进去黏剂的组合新技术。该技术使胶粘剂的控制取得突破性的进展：专利酶技术降低了胶粘物粒子的粒径和数量,而去黏剂则稳定了所有残余胶粘剂,减少了胶粘物在后续工段的凝聚。工厂应用验证了这种酶制剂和去黏剂的组合具有协同效应,去除胶粘物的能力比酶制剂强,而稳定胶粘物的能力比去黏剂好。研究结果表明,这种新技术已成为胶粘物控制的新水准。     

废纸回用时发生胶粘物问题的来龙去脉

详细介绍了废纸回用时发生胶粘物问题的来龙去脉。全文分为六个部分，它们分别是：胶粘物的主要来源及其化学性质，胶粘物的分类、沉积机理及其造成的危害，胶粘物的定量、定性分析方法，胶粘物的机械控制方法，胶粘物的化学控制方法和纸厂胶粘物控制计划的制订及胶粘物问题研究趋向。     

A review of the progress in enzymatic concentration and microencapsulation of omega-3 rich oil from fish and microbial sources

Technology continues to evolve for the concentration and stabilisation of omega-3 fatty acids for delivery into food and beverage products. The use of lipases for selective concentration of EPA and DHA, or for re-esterification reactions, is important in the production of omega-3 concentrates. Enzymatic strategies require robust enzymes that can be immobilised and multiply re-used. Novel and mild processing methods are particularly important for providing oils with good sensory properties, which are required for successful use as functional food ingredients. Although in some cases good quality oils can be used directly in some foods, such as margarine, many foods require that microencapsulated and stabilised omega-3 oils be used. This is particularly important when the oils are preconcentrated. There are a number of industrially used microencapsulation methods, but the most widely used are complex coacervates and spray dried emulsions. Fish oil is still the most widely used source of long-chain omega-3 fatty acids for addition to food, although algal oil is the primary source of DHA for infant formula use in North America. Algal oil is still significantly more expensive than fish oil for most applications, although many groups are improving both the cost and quality of omega-3 oil from algal sources. In particular, Thraustochytrid and Schizochytrid strains are a promising source of both DHA and EPA, and with further improvement could be used to provide varying ratios of these omega-3 fats. In this short review we will describe some of the current research in omega-3 fat concentration and microencapsulation, with particular emphasis on the use of lipases for concentration and complex coacervation for microencapsulation.     

Application of Membrane Separation in Fruit and Vegetable Juice Processing: A Review

Fruit and vegetable juices are used due to convenience. The juices are rich in various minerals, vitamins, and other nutrients. To process the juices and their clarification and/or concentration is required. The membranes are being used for these purposes. These processes are preferred over others because of high efficiency and low temperature. Membranes and their characteristics have been discussed in brief for knowing suitability of membranes for fruit and vegetable juices. Membrane separation is low temperature process in which the organoleptic quality of the juice is almost retained. In this review, different membrane separation methods including Microfiltration, Ultrafiltration, and Reverse osmosis for fruit juices reported in the literature are discussed. The major fruit and vegetable juices using membrane processes are including the Reverse osmosis studies for concentration of Orange juice, Carrot juice, and Grape juice are discusses. The Microfiltration and Ultrafiltration are used for clarification of juices of mosambi juice, apple juice, pineapple juice, and kiwifruit juice. The various optimized parameters in membranes studies are pH, TAA, TSS, and AIS. In this review, in addition to above the OD is also discussed, where the membranes are used.     

我国军用体能训练服的发展

阐述了我国4种军用体能训练服的使用历史，分析了这4种军用体能训练服的织物结构特点，并提出了今后我国军用体能训练服发展的一些建议：军用体能训练服可在单针筒纬编针织大圆机上采用添纱编织方法生产，贴近皮肤的服装里层宜由细特丙纶形成，与大气接触的服装外层可由棉纤维或沟槽涤纶形成。     

Aseptic processing and packaging of food

Abstract

A prerequisite for the aseptic packaging of food is the UHT or HTST process used for sterilizing the food. These processes are defined. The history, microbiology, and engineering principles of aseptic processing and packaging are covered. Attainment of sterility and acceptable levels of spoilage are discussed. Methods used for sterilization of packaging materials include thermal and chemical methods. Thermal methods are normally used for sterilizing the product. With some products there are problems due to enzyme survival. UHT processing systems and aseptic packaging plants are reviewed.     

不断完善预合金粉末的性能,满足金刚石工具的应用（上）

随着预合金粉末在金刚石工具中使用量的增加,使用范围的不断扩大,不断完善预合金粉末的性能,进一步满足金刚石工具应用的需求,具有重大作用与意义。在预合金粉末生产方法中：湿法冶金方法生产的预合金粉,广泛并成功地应用在国外,但成本高,在国内市场应用较少。机械合金化方法多用于科研中,批量生产能耗大。在国内主要采用气雾化、水雾化、多金属化学共沉积法等生产预合金粉末。文章探讨了氧含量对金刚石工具性能的影响;介绍了国内不同生产设备条件下的还原工艺,进一步提出不断完善预合金粉性能的各种途径,以满足金刚石工具应用的需求。     

OSCILLATING VANE GEOMETRY FOR SOFT SOLID GELS AND FOAMS

Several relationships between the torque and the stress exist for the vane geometry, but only a few equations have been proposed for the relationship between angular displacement and strain. In this study, an expression based on the infinite gap approximation for concentric cylinders is used and well-defined reference data are compared to oscillating vane data to validate the assumptions used. Gelatin gels are used for their property to stick to the wall and carrageenan gels are used to show that wall slip does not occur with oscillating vanes in serrated cup geometries. Shaving foams are used as a model low density, time and shear stable foam, which resists irreversible damage when loaded between serrated parallel plates. Results show that the assumptions used for the determination of stress and strain with the vane provide material viscoelastic properties that are not significantly different from reference values as obtained with concentric cylinders and parallel plates.     

Suitability of stationary phase for LC analysis of biomolecules

Abstract

Biologically active compounds such as carotenoids/isoprenoids, vitamins, steroids, saponins, sugars, long chain fatty acids, and amino acids play a very important role in coordinating functions in living organisms. Determination of those substances is indispensable in advanced biological sciences. Engineered stationary phase in LC for the analysis of biomolecules has become easier with the development of chromatographic science. In general, C₁₈ column is being used for routine analysis but specific columns are being used for specific molecule. Monolithic columns are found to have higher efficiency than normal column. Among recent introduction, triacontyl stationary phases, designed for the separation of carotenoid isomers, are widely used for the estimation of carotenoids. In comparison to conventional C₁₈ phases, C₃₀ phases exhibited superior shape selectivity for the separation of isomers of carotenoids. It is also found useful for better elution and analysis of tocopherols, vitamin K, sterols, and fatty acids. Vitamin K, E, and their isomers are also successfully resoluted and analyzed by using C₃₀ column. Amino bonded phase column is specifically used for better elution of sugars, whereas phenyl columns are suitable for the separation and analysis of curcuminoids and taxol. Like triacontyl stationary phase, pentafluorophenyl columns are also used for the separation and analysis of carotenoids. Similarly, HILIC column are best suited for sugar analysis. All the stationary phases are made possible to resolute and analyze the target biomolecules better, which are the future of liquid chromatography. The present article focuses on the differential interaction between stationary phase and target biomolecules. The applicability of these stationary phases are reported in different matrices.     

织造用涤纶POY的质量控制与生产技术

根据织造用涤纶POY的特点．研究了其工艺和控制方法．认为POY沸水收缩率染色均匀性的控制适当且稳定是关键因素。从而生产出多种用途。质量良好，用户满意的织造用POY。     

意大利SASIB卷烟包装机的分析研究

比较自六十年代至九十年代从意大利ＳＡＳＩＢ公司引进的三条卷烟包装线主机，分析研究包装技术的改进。传动系统由单一传动链发展为多个传动链；从采用普通电动机到选用变频调速电动机与同步电动机，使传动系统大为简化。选用先进的共轭凸轮机构代替老式的槽凸轮机构；选用带状供纸替代纸叠状供纸；广泛应用光电检测；用喷淋润滑取代油浴润滑与手工润滑；推烟支装置的不断改进等，使传动精度提高，效率增加。从而，最新的包装机包装速度快，质量高，人工省，材料利用率大。     

阻燃微胶囊制备及其对黏胶织物的整理

利用自制的阻燃微胶囊对黏胶织物进行阻燃整理,并利用微胶囊粒径、表面形貌、力学性能、极限氧指数与热失重性能表征整理后黏胶织物的性能。研究表明:制备的阻燃微胶囊粒径在100μm以下的占比高达80%,且微胶囊对黏胶织物具有很好的黏附性;当整理液中阻燃微胶囊质量分数控制在8%左右时,黏胶织物的极限氧指数与热学性能有一定程度的提高,且织物的力学性能未出现大幅下降,验证了利用阻燃微胶囊对黏胶织物进行阻燃整理具有可行性。