废聚酯再资源化制备涂料研究进展

介绍了国内外化学降解废聚酯制备涂料的研究进展。分别从聚酯树脂涂料，醇酸树脂涂料以及聚氨酯涂料讨论了废聚酯回收利用的开发前景，并指出中国应大力加强废聚酯再资源化的研究开发工作。     

放电等离子体处理室内甲醛的研究

居室装修引起的室内甲醛污染带来诸多健康安全隐患．已经受到越来越广泛的关注。针对该问题．模拟室内甲醛污染的情况，利用放电等离子体对其进行处理。设计了甲醛污染空气模拟室及介质阻挡放电处理装置，研究了甲醛浓度、外加电压、处理时间等条件与甲醛降解率的关系。实验结果表明，采用放电等离子体技术处理模拟室内甲醛气体具有较好效果，可以快速有效地降解甲醛。     

γ辐射降解法制备小分子水溶性壳聚糖

用γ辐射降解法成功制备了一系列小分子水溶性壳聚糖。研究了不同条件下γ射线对壳聚糖的降解效应以及吸收剂量对产物分子量和水溶性产物得率的影响,分析了不同预处理条件对辐射降解产额(Gd值)的影响,并对壳聚糖辐射降解的机理进行了初步探讨。所得产物用凝胶渗透色谱(Gel permeation chromatography, GPC)、傅立叶变换红外光谱(Fourier transform infrared spectrometer,FT-IR)、紫外-可见光谱(Ultraviolet-Visible spectrophotometry,UV-VIS)等手段进行了表征分析。结果表明,壳聚糖在降解过程中不但分子量显著减少, 而且化学结构发生了明显变化,·OH自由基在壳聚糖辐射降解过程中起着至关重要的作用。     

EM>N/EM>，EM>N-/EM>二乙基

研究了N,N-二乙基羟胺(DEHA)水溶液辐解产生的气态烃。当DEHA浓度为0.1~0.5 mol/L,剂量为10~1 000 kGy时,甲烷、乙烷、丙烷和正丁烷的体积分数随剂量的增加而增加,但随DEHA浓度的增加而减少。乙烯和丙烯的体积分数随DEHA浓度的增加而增大,它们与剂量的关系与DEHA浓度有关。     

浅谈交联电缆的接地故障

重点介绍了交联电缆绝缘击穿接地的主要原因——水树枝劣化机理，阐述了降低水树枝劣化速率的主要对策及寻找交联电缆接地故障点的方法。     

Effect of Overcharge on Electrochemical Performance of Sealed-Type Nickel/Metal Hydride Batteries

The effects of overcharge on electrochemical performance of AA size sealed-type nickel/metal hydride（Ni/MH） batteries and its degradation mechanism were investigated. The results indicated that the relationship between the effects of different overcharge currents on the increasing velocity of inner pressure and the degradation velocity of cycle life and discharge voltage remains in almost direct proportion. After overcharge cycles, the positive electrode materials remain the original structure, but there occur some breaks because of the irreversible expand of crystal lattice. And the negative electrode alloy particles have inconspicuous pulverization, but are covered with lots of corrosive products and its main component is rare earth hydroxide or oxide. These are all the main reasons leading to the degradation behavior of the discharge capacity and cycle life of Ni/MH batteries.     

Fabrication, in vitro Degradation and Cytotoxic Assay of Different Crystalline Phases Calcium Polyphosphate

Fabrication, in vitro degradation and cytotoxic assay of different crystalline phases calcium polyphosphate（CPP） were reported. The CPP ceramics were fabricated by crystallizing the amorptous frits, and sintered at 550℃ ,875℃, 1000℃ for 1 h to obtain the 7-CPP, β-CPP and α-CPP respectively. The efffects of the different crystalline phases on their weight loss and released PO4^3- were investigated during the degradation. And the surface change was observed by the SEM, The osteoblastic ROS17/2.8 cell line was used to estimate the cytotoxicity of CPP. The effects of CPP on cells ＇ proliferation were evaluated by using MTT assay. The experimental restdts showed that γ-CPP, β-CPP and α-CPP did not exert cytotoxic effect on the cells. In addition, the proliferation of the growth of ROS17/2.8 cells on β-CPP was optimal.     

Fabrication, in vitro Degradation and Cytotoxic Assay of Different Cystalline Phases Calcium Polyphosphate

1Introduction Mostofthematerialsusedhistoricallyarecalcium phosphatessuchashydroxyapatite(HA),tricalciumphosphates(TCP),tetracalciumphosphate(TTCP),and cominationofthevariousphasesofcalciumphosphates[1].Calciumphosphatematerialshavesomeoutstandingprop ert…     

Anoxic Versus Traumatic Brain Injury: Amount of Tissue Loss, Not Etiology, Alters Cognitive and Emotional Function.

Research in neuropsychology suggests that the etiology of a neurologic injury determines the neuropathological and neuropsychological changes. This study compared neuropsychological outcome in subjects who had traumatic brain injury (TBI) with subjects who had anoxic brain injury (ABI), who were matched for age, gender, and ventricle-to-brain ratio. There were no group differences for morphologic or neuropsychological measures. Both groups exhibited impaired memory, attention, and executive function, as well as slowed mental processing speed. Intelligence correlated with whole brain volume, and measures of memory correlated with hippocampal atrophy. There was no unique contribution of hippocampal atrophy on neuropsychological outcome between the groups. In the absence of localized lesions, the amount of neural tissue loss, rather than etiology, may be the critical factor in neuropsychological outcome. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

绿色包装设计模式的解析

论述了绿色包装设计对于人与自然的生态平衡关系,以及如何提高其产品在国内外的市场竞争力.促使人们重新面对一个基本问题:市场需求什么样的产品包装,如何设计这些产品包装.基于可持续发展的战略思想,提出了探索新的包装设计模式,传达绿色资讯,引导绿色消费.