108m~3聚合釜运行总结

介绍了在108 m3聚合釜生产过程中脱氧塔、助剂配制、聚合进出料、反应监控、压缩回收、汽提、干燥等生产环节的控制要点。阐述了试生产过程中出现的粘釜、堆床等异常情况产生的原因及采取的预防措施。     

A sandwich enzyme-linked immunosorbent assay for κ-carrageenan determination

High titre antisera to κ-carrageenan were produced by immunisation of rabbits and guinea pigs with K-carrageenan. These antisera, rabbit serum as a capture antibody and guinea pig serum as a detector antibody, were used in a sandwich enzyme-linked immunosorbent assay. The range of determination of K-carrageenan was from 16 to 256 ng ml^?1 in the assay. The antisera showed no cross-reactivity with six thickeners. The assay was developed for application to foods such as jelly and custard pudding and demonstrated many advantages including high sensitivity, technical simplicity and the minimal requirement for food sample preparation before assay.     

阳极氧化用5052铝合金基材轧制表面质量控制浅析

分析了热连轧和冷轧过程中影响5052铝合金阳极氧化效果的主要表面缺陷,如黑条、压过划痕、粘伤、印痕和黑点等产生原因,并制定了相应的解决措施。     

A simple approach to fabricate sticky superhydrophobic polystyrene surfaces

We present a facile method for the fabrication of a sticky superhydrophobic polystyrene surface using ethanol as the non-solvent. The obtained surface shows the hierarchical textured morphology as well as the multiple scales of roughness and large numbers of microspheres. Without any chemical modification, the prepared polystyrene surface exhibits sticky superhydrophobicity with a high equilibrium contact angle of 153°. Interestingly, a water droplet on the surface cannot move at any tilt angle even when the substrate is turned upside down. The mechanism of the fabricated surface with high adhesion is discussed in detail. Moreover, the obtained polystyrene surface exhibits the strong adhesion to the liquid droplets of pH value from 1 to 14.     

甘薯糕的研制

对甘薯糕的生产工艺,配方和保健作用进行了研究,并制定了甘薯糕产品的质量标准。     

A Two-Dimensional Approach to Systems Development

Abstract

Although many variables can contribute to the failure of a systems development project, the use of the traditional f one-dimensional systems development life cycle approach is often a major factor in the failure of such an effort This article describes an alternative method— the two-dimensional approach to systems development— and discusses why IS managers should consider adopting this new development approach.     

DNA纳米结构自装配的语言能力分析

文中研究了DNA分子杂交的内在计算能力．一方面,文中基于Winfree先前关于线性分子自装配仅能产生正则语言工作的基础上,进一步扩展证明了线性自装配通过杂交分别表示左、右线性派生的线性分子,也能产生线性语言．另一方面,文中定义了一种新的通过上下文无关语言通过自装配产生线性语言的方法,即证明了等价于上下文无关语言的特定序列集能通过1-,2-,3-粘头分子的混合自装配产生线性语言,同时,这是对Winfree关于树状纳米结构自装配等价于上下文无关语言理论的一个较好的补充．     

强力胶带输送机钢丝绳芯阻燃胶带的快速更换

通过对石台矿- 375运输巷强力胶带机的钢丝绳芯胶带的快速更换,阐明了快速更换方法和施工措施,由于方法周密严谨、措施得力,缩短了施工工期,创造了经济效益,并为淮北矿区钢丝绳芯阻燃胶带的更换提供了经验。     

Role of NaCl level on the handling and water mobility in dough prepared from four wheat cultivars

In bread, NaCl plays a number of roles including improving flavor, functionality, dough handling, and prevention of sticky dough. Its reduction can create significant processing challenges. As such, the dough handling properties for four wheat cultivars (Pembina, Roblin, McKenzie, and Harvest) were investigated as a function of NaCl (0–4%) level. In terms of dough rheology, both cultivar and NaCl level were significant factors. The maximum deformation (J_max) in the dough decreased with increasing NaCl levels, indicating that the gluten network became stronger so that it was able to resist the imposed stress. For extensibility, increasing the levels of NaCl resulted in increased resistance to extension for all cultivars. Dough stickiness was shown to be both cultivar and salt level dependent, with weaker cultivars showing higher stickiness. Findings for water association indicated that with the addition of NaCl there was less free water among the different cultivars and an increase in the water associated with the starch-fraction. Dough morphology measurements supported rheology trends; the stronger dough producing cultivars created more elongated protein polymers with a unidirectional network whereas the weaker cultivars created porous multidirectional networks. Overall, Pembina and Roblin formed stronger gluten networks than McKenzie and Harvest, however, the effect of NaCl level was shown to be cultivar dependent. Findings indicate that careful cultivar selection will help mitigate challenges in dough handling within a reduced NaCl environment.     

减振胶带在分体式空调器室外机的应用研究

目前空调器室外机减振降噪材料普通采用丁基橡胶阻尼块,本文旨在研究一种新型的阻尼材料——铝箔减振胶带,应用于室外机减振降噪,为空调器提供多一种解决振动和噪音的方法。