稀土对生物机体剂量效应机理的研究进展

综述了稀土元素对生物机体剂量效应的机理 ,从稀土对细胞质膜、细胞周期及细胞凋亡、Ca M水平调节的作用到对蛋白质、DNA的影响等不同层次和水平进行了探讨 ,以期为稀土在生物学领域的进一步广泛应用奠定理论基础     

活性硅醇与ENR开环反应及对硫化胶力学性能的影响

以过氧羧酸为环氧化剂,制得环氧化天然橡胶(ENR)。通过从水玻璃中提取的活性硅醇与ENR的开环反应,得到含硅杂化材料ENR-SiO2,测试了其对NE硫化胶力学性能的影响,发现含硅杂化材料对NR硫化胶有明显的增强作用。     

PMMA-SiO2杂化材料对天然橡胶的增强作用

提取了活性硅烷醇,用自由基共聚合法成了含硅高聚物,分析了SiO2含量对硫化天然橡胶力学性能的影响。     

N-长链胆酸酰胺的合成

本文研究了具有长脂链胆酸基非离子型表面活性剂的合成,以商品化胆酸和一系列的长链伯胺(C12~C18)为原料,经过多步反应获得了N-长链烷基胆酸酰胺。目标化合物结构经IR,1H-NMR,13C-NMR,LC-MS等表征确证,同时,对其表面活性进行了初步研究。     

Preparation and Mechanical Performance of Rare Earth- Containing Composite Elastomer

Ｌａｎｔｈａｎｉｄｅｃｏｍｐｏｕｎｄｓｂｅｇａｎｔｏｂｅｕｓｅｄａｓｐｌａｓｔｉｃｓｔａｂｉｌｉｚｅｒｉｎｔｈｅ 1 980ｓ[1] .Ｓｉｎｃｅｔｈｅｎ ,ｒａｒｅｅａｒｔｈ (ＲＥ)ｃｏｍｐｏｕｎｄｓｈａｖｅｂｅｅｎｌａｒｇｅｌｙａｐｐｌｉｅｄｉｎＲＥ ｃｏｎｔａｉｎｉｎｇｐｏｌｙｍｅｒｂａｓｅｄｃｏｍｐｏｓｉｔｅ .Ａｎｕｍｂｅｒｏｆｐｌａｓｔｉｃａｎｄｒｕｂｂｅｒｉｔｅｍｓｗｉｔｈｂｅｔｔｅｒｍｅｃｈａｎｉｃａｌｐｒｏｐｅｒｔｉｅｓｗｅｒｅｄｅｖｅｌｏｐｅｄ ,ａｓｗｅｌｌａｓｎｅｗｔｙｐｅｓｏｆｐｏｌｙｍ…     

Study on Preparation and Property of Poly－Aminosilicone－Rare Earth Composite

The poly-aminosilicone-rare earth composite was prepared by poly-aminosilicone cross-linked with rare earth and active silanol. The thermal stability of the composites was studied by thermogravimetric analysis (TG). Force condition of the composites in electric field was analyzed and relative polarizability was derived. It is found that the composites containing different rare earth ions have different relative polarizability. The experiment results reveal that organosilicon materials with different electrical performance can be obtained by this way. Meanwhile, the absorption and flourescene spectrum of composites were also investigated. Compared to rare earth chloride, the spectrum properties of the composite are changed obviously. The possible reasons for these phenomena were discussed.     

ER Effect of PMMA Wrapped Alumina-Siloxane Gel Doped with Rare Earths

PMMA wrapped alumina-siloxane gel was obtained by using poly (methyl methacrylate) (PMMA) to wrap alumina-siloxane sol which was made from water glass, aluminum nitrate and a-methacrylic acid. Meanwhile, rare earth ions were used to dope in the course of reaction, and stable suspensions was produced by putting PMMA wrapped microcapsule powder doped with rare earths into methy-silicon oil. It is found that its electrorheologlcal (ER) effect improves strikingly after loading electric field. At a certain concentration, the immediate viscosity increases from 95 to 178 Pa‘s compared to the system without doping.     

Study on Preparation and Properties of PVC Film Modified by Rare Earth

The transparent PVC films were prepared by tape casting. In the process of preparation, rare earth nitrate, as a kind of modifier, was added to the solution of PVC and THF. These PVC films were tested after being crosslinked by ultraviolet light. It is found that the mechanical and physical properties of all the PVC films modified by rare earth nitrate are greatly enhanced.     

兔抗原生物敏电极的研究

采用石墨电极作为基础电极 ,将待测兔抗原用丝素蛋白溶液固定在基础电极表面 ,根据抗原抗体的单一性识别原理 ,选用山羊抗兔IgG HRP抗体与其选择性结合制作而成 .利用H2 O2 将该生物敏传感器的电位响应信号放大 ,采用直接电位法检测兔抗原的浓度 .结果符合奈斯特响应 ,兔抗原的最低检测浓度 1.0× 10 -10 mol/L ,线性范围 1.0× 10 -8～ 1.0× 10 -10 mol/L ,响应时间为 15s .这种以固定化抗原结合酶标抗体量的多少作为检测抗原浓度的新型酶免疫电极 ,在临床检测、生物医学研究等领域中有着广阔的应用前景     

Study on Copolymerization of Rare Earth－Carboxylic Acid Complex

Complex of rare earth with carboxylic acid was prepared by precipitation and direct method. It was copolymerized with such monomers as acrylic acid and other ones to synthesize ionomer of rare earth and organic polymer with different rare earth contents. Its glass-transition temperature and heat stability were analyzed by TG and DTA. Infra-red detector was used to show its structure. The effect of rare earth complex prepared by different methods on copolymerization and properties of copolymers was also discussed.