Separation and Characterization of Bisphenol-A Epoxy Resin Paint

[中文文摘]介绍了双酚 A型环氧树脂涂料配方的剖析方法。通过 IR及 NMR等方法对纯化的环氧树脂进行了表征并与传统的化学滴定测环氧值方法比较 ,用 NMR法测定双酚 A型环氧树脂数均相对分子质量的方法 ,建立了数均相对分子质量与环氧值之间的关系。[英文文摘]A separation method for bisphenol A epoxy resin paint was reported, and epoxy resin was characterized by IR and NMR spectroscopy.In contrast to traditional chemical titration method of measuring epoxy value( E ), the number average relative molecular mass ( n) of bisphenol A epoxy resin was calculated in terms of integral intensity in NMR. The relation of E and n was also given

Effect of sorafenib and celecoxib combination therapy on proliferation of the human cholangiocarcinoma cell line SK-ChA-1 in vitro

目的研究索拉非尼联合塞来昔布在体外对胆管癌细胞株Sk-CHA-1增殖的影响。方法体外培养人胆管癌细胞株Sk-CHA-1,通过MTT法检测索拉非尼单用或与塞来昔布联用时对胆管癌细胞株增殖的抑制作用,WESTErn blOT分析索拉非尼单用或与塞来昔布联用时对胆管癌细胞株内多聚AdP核糖聚合酶(PArP)蛋白表达的影响。结果索拉非尼抑制胆管癌细胞株Sk-CHA-1的增殖并诱导细胞凋亡。索拉非尼联合塞来昔布协同抑制胆管癌细胞株Sk-CHA-1的增殖。塞来昔布使索拉非尼诱导的胆管癌细胞株Sk-CHA-1的凋亡增加。结论索拉非尼联合塞来昔布能协同抑制胆管癌细胞株Sk-CHA-1的增殖,这与塞来昔布使索拉非尼诱导的细胞凋亡增加有关。Objective To investigate the effect of sorafenib and celecoxib combination therapy on proliferation of human cholangiocarcinoma(CC) cells,using the cultured SK-ChA-1 cell line.Methods Inhibition of SK-ChA-1 cell proliferation by sorafenib alone and in combination with celecoxib was studied in vitro using the MTT assay.The anti-neoplastic mechanisms of sorafenib alone and in combination with celecoxib were assessed by Western blot detection of changes in the caspase cleavage substrate poly ADP-ribose polymerase(PARP).Results SK-ChA-1 cells treated with sorafenib alone showed a dose-dependent growth inhibition and degradation of PARP.Combination treatment with sorafenib and celecoxib synergistically increased the growth inhibition effects and enhanced the degradation of PARP.Conclusion Combination treatment with sorafenib and celecoxib results in a synergistic anti-proliferative effect in the human CC cell line SK-ChA-1;the addition of celecoxib enhances sorafenib-induced apoptosis.国家自然科学基金资助项目(81072014

2,2′-Bipyridine and Malononitrile as Additives for Styrene Living Radical Polymerization

[中文文摘]研究了稳定自由基存在下苯乙烯的活性聚合。发现在 2 ,2′ 联吡啶的存在下 ,苯乙烯聚合的分子量控制效果提高 ,分子量可控 ,分子量分布较窄。在与丙二腈共同作用时 ,可在 4h内达到 85 %的转化率 ,分子量分布在 1 .5以下 ,分子量控制误差在 2 0 %以下。设计分子量在 1 0 ,0 0 0 90 ,0 0 0 ,实测分子量和理论分子量相近.[英文文摘]Living free radical polymerizations of styrene were studied using benzoyl peroxide as an initiator in the presence of TEMPO(2,2,6,6-tetramethylpiperidinyl-1-oxy). The effect of MN/bpy malononitrile/2,2′-bipyridine additives on the control of molecular weight is explored. It was found that styrene polymerization was distinctly accelerated by MN/bpy additives and the theoretic molecular weight tallie well with the experimental molecular weight. Using the additives in a 1∶1.2 molar mixture of BPO and TEMPO with molbpy∶mol TEMPO = 2∶1 , molMN ∶mol TEMPO = 2. 5 at 135 ℃, the conversion of the styrene polymerization reached 85 % , the polydispersitics is below 1.5 and the difference between the theoretic molecular weight and the experimental molecular weight was cont roled below 20 %.固体表面物理化学国家重点实验室基金资助项目 (1130

载体对甲烷催化部分氧化制合成气的影响

运用固定床流动反应装置、ＴＰＲ和ＸＲＤ等手段考察了载体的晶相组成、比表面和孔结构等性质对Ｎｉ基催化剂在甲烷部分氧化制合成气中反应性能的影响。结果表明，热稳定性好、导热好的惰性材料如（Ｃａ）ＭｇＡｌ２Ｏ４等是甲烷部分氧化制合成气理想的催化剂载体。载体必须具有适当的比表面和孔结构，以利于反应物分子在催化剂表面吸附并与活性中心充分接触，同时也有利于产物分子脱附并离开催化剂表面，防止副反应（积碳反应和燃烧反应）的发生，及时把反应热移走，避免热点产生使催化剂失活。另外还发现，具有不同比表面和孔结构的催化剂具有不同的最佳空

study on phenolic foam

酚醛泡沫塑料具有优异的难燃，自熄，低烟，耐火焰等优点，并且酚醛泡沫塑料成本低廉，其成本约为聚氨酯泡沫塑料的2/3，在常用的保温材料中酚醛泡沫塑料具有其它泡沫塑料无法比拟的优势。随着火灾事故发生频繁及各国政府在建筑、运输等领域对材料提出严格的阻燃、低火焰或低发烟、低毒等要求，酚醛泡沫塑料得到了广泛的应用，获得了快速发展。 本文首先对酚醛泡沫的基本原料－甲阶酚醛树脂的合成从理论上进行了深入研究，在此基础上用比较简便的工艺合成了甲阶酚醛树脂。考察了甲醛与苯酚投料的摩尔比、反应介质pH值、反应温度等因素对合成甲阶酚醛树脂的影响。 对酚醛泡沫的制备工艺进行了研究。考察了树脂粘度和含水量对泡沫制备的重...Phenolic (PF) foam has been well known as a material with low smoke, fire resistant, high temperature resistant, self-extinguishing and lower cost. The cost of phenolic foam is about 2/3 of that of polyurethane (PU) foam. As compared to other general rigid plastic insulation materials like polystyrene, polyurethane or polyethylene, phenolic foam has incomparable advantages. With fire accident taki...学位：理学硕士院系专业：化学化工学院材料科学系_高分子化学与物理学号：20003600

Study on Phenolic Foam

［中文文摘］针对影响酚醛泡沫性质的众多参数的不确定性 ,给出了可发泡性甲阶酚醛树脂的合成方法及酚醛泡沫塑料发泡典型配方 ;考察了反应温度及水含量对酚醛树脂粘度的影响 ,讨论了表面活性剂、发泡剂、固化剂及发泡温度对泡沫性能的影响。结果表明 :当表面活性剂用量为 4%～ 7% ,发泡剂用量为 4%～ 10 % ,固化剂用量为 8%～ 12 % ,发泡温度在 70～ 80℃范围时 ,可制得较好的酚醛泡沫塑料。［英文文摘］This study presented the experimental results on the preparation and characteristics of resol and phenolic foam because of a very wide range of process variables with little indication of preferred or desired process parameters. The effects of reaction time and water concentration on the resin viscosity were studied. The effects of surfactant, blowing agent, acid catalyst and foaming temperature on the density of phenolic foam were also investigated. When the surfactant content was 4%～7%, blowing agent content 4 %～10 % , acid catalyst content 8 %～12 % , and at foaming temperature 70 ℃ ～ 80 ℃, phenolic foams with good properties could be prepared.固体表面物理化学国家重点实验室基金 (1130

Intrusion Detection Algorithm Based on Optimized One-class Support Vector Machine for Industrial Control System

基于通信行为的异常检测是工业控制系统入侵检测的难点问题. 通过利用粒子群优化（particle swarm optimization，PSO）算法对单类支持向量机（one-class support vector machine，OCSVM）算法的参数进行优化，提出一种PSO-OCSVM算法. 该算法根据正常的Modbus功能码序列建立正常通信行为的入侵检测模型，识别出异常的Modbus TCP通信流量. 通过仿真对比分析，证明PSO-OCSVM算法满足工业控制系统通信异常检测对高效性、可靠性和实时性的需求