可交联AA/AM反相乳液聚合的稳定性研究

研究了乳化剂的种类及用量、交联剂含量、单体配比、pH值、搅拌速度等因素对AA／AM反相乳液稳定性的影响,结果表明：利用低HLB值油溶性的乳化剂,控制乳液pH＞8．5,乳化搅拌速度＞1000r/min,可合成出稳定的AA／AM反应乳液。     

伸筋草提取物对AA大鼠RF及Ig影响的实验研究

研究伸筋草提取物对佐剂性关节炎（AA）大鼠血清类风湿因子（RF）及免疫球蛋白（Ig）的影响,探讨其治疗类风湿性关节炎（RA）的作用及免疫学机制.采用弗氏完全佐剂（CFA）诱导大鼠AA模型,于造模后第7 d分别灌胃给药伸筋草乙醇、正丁醇提取物,连续给药21 d.ELISA法检测RF,免疫透射比浊法检测IgG、IgM、IgA的OD值.模型组大鼠血清RF和IgA、IgM水平均高于正常对照组（P〈0.01）.各治疗组RF、IgM、IgA水平均有不同程度的降低,IgG未见有意义的改变.伸筋草乙醇、正丁醇提取物可通过免疫调节机制对佐剂性关节炎发挥治疗作用.     

含氟聚合物辐射气相接枝研究Ⅱ.PTFE辐射气相接枝共聚物结构表征和性能测试

用扫描电子显微镜（ＳＥＭ）和偏光显微镜（ＰＯＭ）研究了聚四氟乙烯（ＰＴＦＥ）辐射接枝气相丙烯酸（ＡＡ）共聚物膜的表面和断面结构，并分析了膜厚与接枝率的关系，以确证ＰＴＦＥ辐照接枝气相ＡＡ的反应为扩散控制反应．还进一步测试了ＰＴＦＥｇＡＡ膜的亲水性和粘接性能，探寻改性ＰＴＦＥ膜的应用前景     

Organic media enhanced spectrofluorimetric determination of L-ascorbic acid

A novel spectrofluorimetric method for the determination of L-ascorbic acid is proposed. It is based on the inhibition of L-ascorbic acid on the formation of 2,3-diaminophenazine, which is an oxidation product ofo-phenylenediamine catalyzed by laccase. The fluorescence (at λ_cx/λ_cm=464 nm /530 nnm) was enhanced strongly in the presence of organic media. The mechanism ofo-phenylenediamine oxidation reaction catalyzed by laccase in the presence of L-ascorbic acid is discussed. L-ascorbic acid is determined in the ethanol, 1,4-dioxane and acetone over the linear range of 4.0×10⁻⁷≈1.2×10⁻⁴ mol/L, 4.0×10⁻⁷≈8.0×10⁻⁵ mol/L and 4.0×10⁻⁷≈1.0×10⁻⁴ mol/L with a detection limit of 1.20×10⁻⁵ mol/L, 1.19×10⁻⁵ mol/L and 1.24×10⁻⁸ mol/L, respectively. The method has been successfully applied to the simple and rapid determination of L-ascorbic acid in pharmaceuticals and milk powder. Supported by National Natural Science Foundation of China and the Special Funds of State Education Committe for Doctorate Research Huang Zuyun: born in Aug. 1963. Ph.D     

藏药翁布提取物对SD大鼠FCA诱导性关节炎的试验研究

目的：研究单味藏药翁布（Myricaria germanica（L.）Desv.）对SD大鼠佐剂性关节炎（AA）的作用.方法：以SD大鼠为实验动物,采用Freund’s佐剂作为致炎因子,复制急性关节炎症并伴随继发性风湿性关节模型,用不同提取物灌胃24d,测定体重、关节炎指数、足趾肿胀度.结果：藏药翁布各提取物显著抑制SD大鼠关节炎指数、足趾肿胀度.结论：藏药翁布提取物对Freund’s佐剂诱导性关节炎有显著的抗炎作用.     

基于MSP430的表面污染测量仪

详细介绍了基于MSP430F149单片机的便携式表面污染测量仪电路，并给出了部分程序的流程图，用MSP430F149取代传统的8位微控制器，整机性能得到了很大的提高。     

液体发酵曲阜孔林赤灵芝菌丝体红外吸收光谱及氨基酸分析

本文利用红外吸收光谱仪和Ｂｅｃｋｍａｎ６３００高效氨基酸分析仪，对野生灵芝和发酵灵芝进行了成分分析，证明发酵灵芝优于野生灵芝，可取代野生灵芝．     

紫色甘薯生长过程中花色素含量变化研究

研究了紫色甘薯不同生长期花色素、游离氨基酸、蛋白质的含量变化及苯丙氨酸解氨酶的活力变化,结果表明:花色素的积累与蛋白质含量变化呈反比,与苯丙氨酸解氨酶活力呈正比,与游离苯丙氨酸的含量呈反比.根据花色素等的变化确定10月下旬是紫色甘薯的最佳收获期,为紫甘薯产业化开发提供优质原料.     

CO2激光焊接快速凝固耐热铝合金AA8009

采用3种不同的焊接速度（0.6, 1.5和2.4 m/min）, 对板厚为1 mm的耐热铝合金AA8009进行CO2激光焊接. 研究结果表明： 在焊接冷却速度为102～103 ℃/s时, 焊缝中心凝固组织为亚共晶组织, 大量细小的第二相粒子弥散分布在细小近等轴的α-Al中;在熔化区边界存在大量粗大的针状相分布在粗大胞状枝晶α-Al中;提高焊接速度可改善焊接接头组织和性能, 当焊接速度为2.4 m/min时, 焊缝组织类似于基材组织;焊接接头断裂发生在熔化区边界.     

Cytological mechanisms of interspecific incrossability and hybrid sterility between Oryza sativa L. and O. alta Swallen

Oryza sativa and O. alta belong to AA and CCDD genomes in Oryza, respectively. Interspecific repro-ductive isolation limits the transfer of favorable genes from O. alta into O. sativa. The cytological mechanisms of interspecific incrossability and hybrid sterility between O. sativa and O. alta were studied systematically in this paper. We indentified two cytological causes of interspecific incrossabil-ity. First, we observed embryo sac incompatibility that caused fertilization barriers of variable severity such as non-fertilization, fertilization stagnation and egg cell single-fertilization. Second, we observed hybrid inviability, the major cause for incrossability, apparent from hybrid embryo developmental stagnation and embryo abortion. Hybrid sterility included both embryo sac sterility and pollen sterility. The hybrid embryo sac was completely sterile and exhibited mainly embryo sac degeneration. Hybrid pollen was also sterile and mainly typical abortive. Hybrid sterility was mainly caused by severely ab-normal meioses of megasporocytes and pollen mother cells; it is the most important abnormality, being chromosome sterility. Several methods are suggested to overcome the interspecific reproductive iso-lation between O. sativa and O. alta.