乳化液废水处理方法

针对某钢管公司的乳化液废水,采用\     

结构化共聚物——改善表面性能的高性能添加剂

概述了能以工业规模进行现有产品开发的聚合技术.技术和应用的配合,以及应用科学的工艺包将由选择的实例证实,不久的将来可能推广到纺织品.     

Issues in the assimilation of the sources of a trace gas by inverse modelling

The problem of reconstructing the (otherwise unknown) source and sink field of a tracer in a fluid is studied by developing and testing a simple tracer transport model of a single-level global atmosphere and a dynamic data assimilation system. The source/sink field (taken to be constant over a 10-day assimilation window) and initial tracer field are analysed together by assimilating imperfect tracer observations over the window.Experiments show that useful information about the source/sink field may be determined from relatively few observations when the initial tracer field is known very accurately a-priori, even when a-priori source/sink information is biased (the source/sink a-priori is set to zero). In this case each observation provides information about the source/sink field at positions upstream and the assimilation of many observations together can reasonably determine the location and strength of a test source.     

乳液聚合方法研究进展

乳液聚合方法具有各方面的优点和广泛的应用范围,因此,受到人们的广泛关注。本文介绍了乳液聚合的优缺点,并着重介绍了一些新的乳液聚合方法及其原理、特点、应用以及中外最新的一些研究成果。     

UV‐Triggered Polymerization,Deposition, and Patterning of Plant Phenolic Compounds

Plant‐derived phenolic compounds, rich in catechol and pyrogallol moieties, can form multifunctional coatings on various substrates following polymerization under mildly alkaline conditions. Despite many appealing features of such coatings, the difficulty to control polymerization of phenolic compounds spatially and temporally limits their number of potential applications. In this study, it is demonstrated that UV irradiation can trigger oxidative polymerization and deposition of plant‐derived phenolic compounds, which opens the possibility to create 2D gradients and patterns of polyphenol coatings and control this polymerization temporally. UV–vis spectroscopy, electrospray ionization mass spectrometry, and cyclic voltammetry analyses are used to investigate the UV‐induced polymerization of several plant‐derived phenolic compounds including pyrogallol, tannic acid, caffeic acid, and gallic acid. Formation of polyphenol coatings on polar and nonpolar substrates after UV irradiation has been studied using water contact angle measurements, atomic force microscopy, time of flight secondary ion mass spectrometry, and X‐ray photoelectron spectroscopy (XPS). The possibility to use UV‐light to accelerate polymerization of phenolic compounds and perform micropatterning can extend the scope of potential applications of the large class of structurally diverse plant‐derived phenolic compounds.     

利用乳蛋白改善肉糜制品质量

乳蛋白是肉糜制品的优质乳化剂,它能与水和脂肪界面充分结合,形成较为稳定的水—蛋白质—脂肪系统,合理使用,可赋予成品良好的风味和口感及优良的物理性能.同时使用乳蛋白还可以尽量利用生产中的边角余料、低档肉,提高肉的利用率,降低生产成本.     

BN—SF和BN—HF型皮革涂饰用树脂乳液的研究

本文介绍了用丙烯酸酯类单体与其他单体为原料,通过多元乳液共聚制备BN-SF和BN-HF两种新型皮革涂饰用高分子乳液的方法。并对所得胶乳及胶膜的物化性能进行了测试。论文还讨论了单体的配比,乳化剂的变化对乳液及胶膜性能的影响。实验表明这两类涂饰材料综合性能优良,贮存稳定性好。粒度范围为0.05～0.15)μm。经国内有关厂家成批量应用后表明该材料对皮革的涂饰效果好,涂层性能优良。     

Multiphoton Lithography as a Promising Tool for Biomedical Applications

Multiphoton lithography (MPL) is a powerful and useful structuring tool capable of generating 2D and 3D arbitrary micro- and nanometer features of various materials with high spatial resolution down to nm-scale. This technology has received tremendous interest in tissue engineering and medical device manufacturing, due to its ability to print sophisticated structures, which is difficult to achieve through traditional printing methods. Thorough consideration of two-photon photoinitiators (PIs) and photoreactive biomaterials is key to the fabrication of such complex 3D micro- and nanostructures. In the current review, different types of two-photon PIs are discussed for their use in biomedical applications. Next, an overview of biomaterials (both natural and synthetic polymers) along with their crosslinking mechanisms is provided. Finally, biomedical applications exploiting MPL are presented, including photocleaving and photopatterning strategies, biomedical devices, tissue engineering, organoids, organ-on-chip, and photodynamic therapy. This review offers a helicopter view on the use of MPL technology in the biomedical field and defines the necessary considerations toward selection or design of PIs and photoreactive biomaterials to serve a multitude of biomedical applications.     

P N IFFT FOR OFDM-BASED UWB SYSTEM

In this letter, P × N-point IFFT is proposed to replace the N-point IFFT and analog frequency conversion in an Orthogonal Frequency Division Multiplexing (OFDM)-based Ultra-WideBand (UWB) system, and a new algorithm, named fast P × N-point IFFT, is designed to reduce the complexity of the P × N-point IFFT in the proposed scheme.