RMR—RS—GMA多功能涂层机评析

奥地利Ｚｉｍｍｅｒ公司应用磁棒刮印技术较ＳＴＯＲＫ公司早,而磁系统应用于多功能涂层机显然更早。ＲＭＲ－ＲＳ－ＧＭＡ型及其发展型多功能涂层机所用的磁系统据称为其专利,应当说很有参考价值。该机的设计不仅能满足一套色印花及圆网涂层,而且能在高位或低位直接向织物表面涂层,因而能适应各种厚薄的织物及各种粘度的涂料,该机有较广泛的适应性,易与其他设备配套成为完整的涂层整理生产线。图１　多功能印花涂层机简图１－浆槽支架升降手轮　２－浆槽　３－涂层辊　４－导辊调节钮手　５－磁辊　６－探浆调节钮　７－刮浆器　８－…     

产业用纺织品涂层新技术

Coatmea公司以立式涂层机和Slotcoater涂层机向市场推出两种新型的涂层和干燥工艺。在纳米级，即极薄型涂层领域的产品可按照窗帘涂层工艺的要求在Slotcoater涂层机生产，其涂层厚度可达2g/m^2。     

织物涂层机防爆技术改造

某印染厂由于涂层机防爆技术不好,造成重大伤亡及厂房被毁事故。为了防止这类事故,我们对现有涂层机逐一地进行改造、检测验收、发证使用,起到了良好的收效,1997年以来经改造验收的近三十台涂层机均未发生爆炸事故,现将做法介绍如下:1 找原因、制定对策 目前我市织物涂层物大都是化纤织物。使用的涂层浆料多为丙稀酸酯涂层,内含有80％以上甲苯溶剂,外加稀释剂醋酸乙酯5％-10％。甲苯、     

新型涂层织物与涂层技术

为了了解新型涂层织物及其加工技术的现状,采用分类对比的方法对目前国内外新型涂层织物与涂层技术进行了概述,展望了新型涂层织物的发展方向。     

热熔粘合衬及其涂层设备的开发

本文介绍了热熔粘合衬布涂层加工的有关技术,包括几种常用热熔粘合剂的性能特点、底布的选择及处理,还介绍了研制开发的撒粉、粉点、浆点和双点涂层机的原理及结构特点.     

Timatec涂层设备在德国门富士成功启动

近日,恒天立信首席执行官冀新在德国门富士的应用中心启动Timatec的涂层设备,标志着Timatec技术在德国门富士正式批量投产。此前,恒天立信集团旗下德国门富士（Monforts）于ITMA2015米兰展会宣布收购欧洲Timatec涂层技术,并在至今拥有33年成熟生产经验的德国门富士奥地利高科技工厂（Montex Ges.m.b.H St Stefan）制造涂层机。     

新型生物涂层技术

阐述了碳/碳复合材料表面纳米HAp/壳聚糖生物复合涂层、新型钛合金及生物涂层技术、rhBMP-2/PDLLA种植体涂层材料诱导成骨、用微束等离子喷涂在TiA16V4基体上制备羟基磷灰石涂层的新型生物涂层技术。并分析了其化学原理、方法、技术和发展方向。     

织物涂层机防爆技术实践

分析了织物涂层机爆炸原因 ,为了防止类似事故发生 ,提出了落实防爆的措施 ,并建议制订涂层机行业标准及安全技术规范 ,对生产厂实行许可证制度 ,要求制造、安装实行归口管理     

苏州推出新型巧克力涂层机

巧克力涂层一直是保证巧克力产品质量，增加巧克力花色品种的重要工艺环节，因此长期以来，涂层机的更新换代成为各巧克力生产厂家的迫切要求。近日，一种名为“SJP”的系列巧克力涂层机，由苏州金鹰设备有限公司成功推向市场，受到巧克力厂商的欢迎。     

涂层、层压复合织物生产技术与设备

介绍了涂层、层压复合织物的发展前景。对涂层生产技术中的涂层方法、涂层剂种类,层压复合技术中的黏合技术、黏合剂、防水透湿薄膜进行了阐述和说明,对生产设备也做了比较。     

Encapsulation of food ingredients

Microencapsulation is a relatively new technology that is used for protection, stabilization, and slow release of food ingredients. The encapsulating or wall materials used generally consist of starch, starch derivatives, proteins, gums, lipids, or any combination of them. Methods of encapsulation of food ingredients include spraydrying, freeze‐drying, fluidized bed‐coating, extrusion, cocrystallization, molecular inclusion, and coacervation. This paper reviews techniques for preparation of microencapsulated food ingredients and choices of coating material. Characterization of microcapsules, mechanisms of controlled release, and efficiency of protection/ stabilization of encapsulated food ingredients are also presented.     

Food-borne Listeria monocytogenes risk assessment

Listeria monocytogenes is ubiquitous in the environment and in food processing plants. Consequently, foods are frequently contaminated. However, the occurrence rate of listeriosis is only about five cases per million people per year. Listeriosis primarily strikes immunocompromised individuals, pregnant women and the elderly with a fatality rate of 20-25%. The FDA is in the process of finishing a risk assessment that is being conducted as an initial step in reviewing its approach to maximizing the public protection from foodborne L. monocytogenes . The risk assessment evaluated the presence and quantitative levels of L. monocytogenes in 21 groups of ready-to-eat foods. The potential growth of L. monocytogenes between retail point-of-sale, where contamination data originated, and consumption was modelled. The frequency and amount of consumption of these foods completed the data for the exposure assessment. For the hazard characterization or dose response part of the risk assessment, data from animal studies, virulence assays and epidemiological investigations were used to estimate the likelihood of illness for different human groups from consuming different numbers of L. monocytogenes . This risk assessment is a virtual review of current scientific knowledge. Quantitative modelling provides greater insight than a qualitative review and also indicates the uncertainty about our knowledge. The risk assessment does not attempt to define an acceptable or tolerable level of L. monocytogenes consumption or propose changes in regulations. These decisions are the responsibility of risk managers who consider additional factors such as food preferences, technical feasibility and societal values when evaluating regulatory policies.     

Some Textile Applications of Finite-element Analysis Part I: Finite Elements for Aligned Fibre Assemblies

A new approach to the application of finite elements to aligned-fibre-assembly problems is introduced. This more rigorous application of finite-element analysis will allow the solution of a range of problems that have been impossible to solve by using previous approaches. Difficulties with non-linear material properties and large-scale deformations are overcome by defining the element stiffness matrix in a co-ordinate system based on the energy modes of the element deformation. It is shown how algorithms can be used to supply non-linear relationships for various types of deformation, simplifying the task of using complex material properties. The transformation of the element properties back to a conventional co-ordinate system to allow assembly of all of the elements in the structure is presented.

A two-dimensional element is developed to model aligned fibre assemblies. To maintain fibre continuity between finite elements, twelve degrees of freedom are required for each element. The deformation modes of this element are derived in terms of the conventional co-ordinate system. The results from the finite-element analysis are compared favourably with measurements taken from a deformed array of springs.

This paper is the first part of a series of two papers. Part II will investigate the application of finite elements to yarn mechanics.     

Depth of concussion in cattle shot by penetrating captive bolt

The prevalence of shallow depth of concussion following captive bolt shooting was assessed in 1608 cattle at an abattoir. Depth of concussion was determined in each animal from physical collapse, presence or absence of corneal reflex, normal rhythmic breathing, eyeball rotation, and whether the animal was re-shot. The presence of nystagmus and the absence of tongue protrusion were also monitored as potential indicators of a shallow depth of concussion, and simultaneous noise measurements assessed whether loudness of gun discharge was linked to concussion depth. The prevalence of a shallow depth of concussion was 8% for all cattle and 15% for young bulls. Nystagmus was associated with other indicators of a shallow depth of concussion. Absence of tongue protrusion was not associated with depth of concussion, but could serve as a useful indicator of jaw relaxation and insensibility following exsanguination. Soft-sounding shots (111 dB) when using 4.5 gr cartridges were associated with shallow depth of concussion.     

Biodegradation of genetically modified seeds and plant tissues during composting

BACKGROUND: The increasing global market of genetically modified (GM) crops amplifies the potential for unintentional contamination of food and feed with GM plants. Methods proposed for disposal of crop residues should be assessed to prevent unintended distribution of GM materials. Composting of organic material is inexpensive and location‐independent. The objective of this study was to determine the effectiveness of composting for disposal of GM plants in terms of reducing seed viability and promoting the degradation of endogenous as well as transgenic DNA. RESULTS: Duplicate samples of corn kernels, alfalfa leaves, and GM canola seeds, meal and pellets were sealed in porous nylon bags and implanted in duplicate 85 000 kg (initial weight) feedlot manure compost piles. Samples were collected at intervals over 230 days of composing. Canola seeds and corn kernels were not viable after 14 days of composting with temperatures in the piles exceeding 50 °C. In all samples, PCR analyses revealed that plant endogenous and transgenic fragments were substantially degraded after 230 days of composting. Southern blotting of genomic DNA isolated from canola seeds identified differences in the persistence of endogenous, transgenic, and bacterial DNA. CONCLUSION: Composting GM and non‐GM plant materials with manure rendered seeds non‐viable, and resulted in substantial, although not complete, degradation of endogenous and transgenic plant DNA. This study demonstrates that composting could be effective for disposing of GM crops in the event of their inadvertent entry into the food or feed chain. Copyright © 2010 Crown in the right of Canada. Published by John Wiley & Sons, Ltd     

39—THE FLOW OF LIQUID FROM A JET THROUGH A COMPRESSIBLE POROUS LAYER. PART III: THE CHARACTERISTICS OF LIQUID FLOW THROUGH A COMPRESSIBLE LAYER OF LOOSE WOOL

The effects on the conditions of flow of the surface and configurational properties of the fibres in a compressible porous layer are discussed. The characteristics of a layer of wool are evaluated, and its compressibility is determined. It is shown that, when a liquid of initial uniform pressure flows through a compressible porous medium, the pressure gradient within the medium increases with the distance of flow. The resulting pressure drop is found to depend on a function of the ratio of the downstream to the upstream porosity of the compressible medium. Experimental results are reported for permeable flow through various layers of loose wool; these indicate that, when the flow is disturbed turbulent, the pressure drop through the layers is proportional to the square of the filter velocity. This result is not readily apparent from the graphs of pressure drop against filter velocity because of the compressibility of the fibres.     

产木聚糖酶和纤维素酶真菌的酶学性质分析

红树林土壤微生物资源丰富,从深圳福田红树林土壤中分离了80株真菌,经过产酶发酵复筛,获得2株同时具有较高木聚糖酶和纤维素酶活的真菌。通过菌株形态观察和分子鉴定,确定菌株1为草酸青霉(Penicillium oxalicum),菌株2为曲霉属的Aspergillus piperis。菌株1的木聚糖酶和纤维素酶酶活分别为42.16 IU和3.05 IU,菌株2的木聚糖酶和纤维素酶酶活分别为39.01 IU和0.87 IU。同时,对其进行酶学性质研究表明,2菌株木聚糖酶的最适温度均为50℃;菌株1纤维素酶的最适温度是60℃,菌株2纤维素酶的最适温度是70℃,具有一定的耐热性。两菌株纤维素酶的最适pH均为3.0;菌株1木聚糖酶的最适pH为5.0,菌株2木聚糖酶的最适pH为4.0。     

干酪中肠球菌种群的遗传差异及万古霉素抗性基因分析

通过种、属引物特异性扩增、重复序列PCR（rep-PCR）技术和万古霉素抗性基因检测对新疆北疆地区干酪样品中球菌的遗传结构差异进行分析。结果表明,15份样品共分离52株肠球菌,包括31株耐久肠球菌(Enterococcus durans)、18株粪肠球菌(Enterococcus faecalis)和3株屎肠球菌(Enterococcus faecium)。依据rep-PCR遗传指纹带谱分析,52株菌可以聚类成7个群,其中4个由E. durans构成。24株肠球菌检测到了万古霉素抗性基因,17株E. durans为VanC2/C3型,4株E. faecalis为VanC1型,2株E. faecium为VanB型,只有1株E. faecium为VanA型。新疆北疆地区干酪中肠球菌种群分布较为广泛,地域之间优势种群和基因型不同,同种肠球菌菌株之间存在广泛的遗传差异。     

Water–disaccharides interactions in saturated solution and the crystallisation conditions

This paper reports solubility data and measurements of viscosity of the saturated aqueous solutions of sucrose, maltitol, and trehalose. Likewise, the metastable zone width and velocity of nucleation of the three disaccharides are compared. The narrowest metastable zone is observed for maltitol and the largest for trehalose. Such behaviour is due to a higher affinity of trehalose for water. Moreover, the crystallisation of anhydrous disaccharides in aqueous solution necessitates that hydration water be removed and evacuated from crystal integration surface to the bulk of solution to allow the growth of crystals. This step of disassociation and diffusion of hydration water proves to be the controlling step of the crystallisation process. Structural features at the origin of the differences between the three sugars are studied by FTIR spectroscopy. Modifications of frequencies and intensities of the vibrations around the glycosidic bond are interpreted in terms of conformational flexibility. Arguments like H-bond strength or conformational flexibility of the two monomers around the glycosidic oxygen were evoked as possible explanations of the behaviour of disaccharides. Likewise stability of hydration of the disaccharides is derived from the interpretation of FTIR spectra. These structural features help in interpreting the differences in crystallisation conditions and to hypothesize about the cryoprotective ability of the studied molecules.