竹原纤维接枝改性反应历程探讨

为改善竹原纤维的服用性能,迎合广大消费者个性化、新颖化、功能化的要求,以天然竹原纤维为原料,探讨了环氧氯丙烷、β-环糊精、含氟环氧化合物等十余种化学改性剂应用于竹原纤维的接枝改性,分析了各种不同化学改性剂用于竹原纤维接枝改性的反应历程,对开发具有多功能、高性能、好品质的新型竹原纤维及其纺织面料提供了新思路,同时对化学改性剂在纺织印染领域中的应用指出了新的方向。     

Low-Temperature Plasma Induced Grafting of 2-Methacryloyloxyethyl Phosphorylcholine onto Poly（tetrafluoroethylene） Films

Modification of poly(tetrafluoroethylene) (PTFE) films with 2-methacryloyloxyethyl phosphorylcholine (MPC) was performed by low-temperature plasma treatment and grafting polymerization. Surface properties of PTFE were characterized by attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectra, X-ray photoelectron spectroscopy (XPS), and static contact angle. The results show that MPC has been grafted onto PTFE film surface successfully. Contact angle for the modified PTFE films in the water decreased from 108° to 58.25°, while surface energy increased from 17.52 mN/m to 45.47 mN/m. The effects of plasma treatment time, monomer concentration and grafting time on degree of grafting were determined. In the meanwhile, blood compatibility of the PTFE films was studied by checking thrombogenic time of blood plasma.     

硅胶表面光引发制备氨基比林分子印迹聚合物的研究

以光引发剂二乙基二硫代氨基甲酸钠对硅胶表面进行修饰,以氨基比林为模板分子、甲基丙烯酸为单体、乙二醇二甲基丙烯酸酯为交联剂,在修饰后的硅胶表面接枝共聚制备分子印迹聚合物。利用红外光谱、电镜对聚合物进行了表征,用紫外分光光度法考察了分子印迹聚合物对氨基比林的吸附特性。结果表明,印迹聚合物对模板分子具有较高的吸附能力和选择识别能力。     

甜柿十二倍体试管苗嫩枝嫁接方法的研究

以甜柿十二倍体试管苗为试材，借助嫩枝嫁接的方法对甜柿试管苗嫁接进行研究，结果表明：嫁接时保持完整根系，切除子叶，接穗削面长度控制在2～3mm，嫁接成活率最高；嫁接培养基采用附加IBA 0．3mg／L＋ZT 0．44mg／L＋AC 3g／L＋蔗糖30g／L的MS（1／2N）固体培养基，有利于嫁接成活．     

中华金叶榆在张家口地区嫁接技术浅谈

本文介绍了中华金叶榆的观赏特性,具体阐述了中华金叶榆在张家口生产中常用的枝接和芽接方法,以及嫁接后的管理要点。为我国北方寒冷地区推广中华金叶榆提供技术参考。     

淀粉与苯乙烯悬浮接枝共聚的研究

研究了淀粉与苯乙烯在Ce^4＋ — S2O8^2-复合引发剂存在下的悬浮接枝共聚，并用红外光谱证实了接枝产物，讨论了淀粉预处理方式、反应温度、引发剂浓度、淀粉与苯乙烯配比等因素对单体转化率、接枝率、接枝效率的影响，结果表明，通过悬浮接枝聚合，产物保持原淀粉的颗粒状，后处理简单，最高接枝率可达47．4％，接枝效率可达78.0％。     

美声唱法与民族歌剧——呼唤中国民族歌剧时代的到来

＂美声唱法＂早已传入中国并已开花结果,但多年以来中国的民族歌剧体系却一直未能建立起来,这是个重大缺憾。因此研究建议采用＂移植法＂和＂嫁接法＂来解决创建中国民族歌剧体系的问题。＂移植法＂是引进欧美歌剧,把欧美歌剧逐渐中国化,＂嫁接法＂是中国传统戏曲的逐步欧美化,是从中国戏曲里＂中心开花＂式地嫁接出中国民族歌剧体系来。     

壳聚糖-对羟基苯甲酸膜对Cu~（2＋）的吸附性能研究

采用直径约60mm的壳聚糖-对羟基苯甲酸膜对Cu2＋的吸附进行了研究,结果表明：吸附量随着振荡时间、pH值、温度、Cu2＋初始浓度的增加而增大。对实验数据运用相关数学模型拟合,显示等温吸附平衡符合Freundlich模型,吸附过程动力学更符合二级反应。     

Endoscopic vein harvest in elective off-pump coronary artery bypass grafting

While traditional open vein harvest was related to postoperative wound complications, endoscopic vein harvest was developed to minimize the morbidity in the greater saphenous vein harvest procedure. In this study, these two procedures were compared for postoperative wound healing and long-term graft patency. We reviewed all consecutive patients undergoing elective off-pump coronary artery bypass grafting from January 2004 to December 2005 and collected data regarding wound complications and coronary events. Wound complications included dehiscence, excessive discharge, edema, altered sensation, cellulitis, hema-toma, pain scale, and superlicial and deep wound infection. Coronary events were defined as diagnosis of myocardial infarction during the first year's follow-up. A total of 392 patients were included in our series, among whom 44 were excluded from the study due to emergent operation, preoperative intra-aortic balloon pump support, or the greater saphenous vein varicose characteristic, 78 belonged to open vein harvest group, and 270 to endoscopic vein harvest group. Wound complications were significantly less in the endoscopic group (5.2%) compared to the open group (19.2%) (P=0.0002). There was no significant difference on preopera-tive risk factors, total operative time, or hospitalization days. During one-year follow-up, both the early and late graft patency rates were similar between the two groups. Endoscopic vein harvest is safe and effective, which carries less risk for wound complica-tions and is associated with better satisfaction and cosmetic result than the traditional greater saphenous vein harvest procedure. The endoscopic vein harvest also demonstrates a great long-term patency.     

嫁接甜椒配套栽培技术研究

研究了基肥水平和整枝方式对嫁接甜椒结果和产量的影响。结果表明,嫁接甜椒适宜的肥量为中等以上肥力地块每667㎡施腐熟优质鸡粪4000kg左右。嫁接甜椒植株生长势增强,适宜采取三干整枝方式。