关于虎眼万年青体细胞胚的细胞起源和发育过程的初步研究

本文以虎眼万年青鳞片小切段为外植体，对体细胞胚的发生途径，起源模式及发育过程作了系列切片和扫描电镜观察，结果表明大量体细胞胚直接发生于外植体近轴面的表面细胞或薄壁细胞。有些体细胞胚起源于单细胞，另一些起源于几个细胞构成的胚胎发生单元，但始终未见起源于十多个甚至几十个细胞的细胞学证据。有不少体细胞胚发生于肿块样突起物上，这地局部区域表皮细胞的增生加厚。明显不同于胚性愈伤组织，在胚胎发育过程中胚体侧面     

铋与7—碘—8—羟基喹啉—5—磺酸络合吸附波及其应用

建立了铋(Ⅲ)-7-碘-8-羟基喹啉-5-磺酸体系在单扫示波极谱仪上测定微量铋的方法。以0.25mol/L NaOH为支持电解质,该体系有一灵敏的导数极谱波,峰电位为-0.58v(vs.SCE)。峰电流与铋的浓度在0.050～1.1μmol/L范围内成正比。应用循环伏安、脉冲极谱等方法确证该极谱波属于络合吸附波。测得该吸附型体的络合比为Bi(Ⅲ):IQSH=1∶1。     

Profile identification of disease-associated humoral antigens using AMIDA, a novel proteomics-based technology

We describe AMIDA (autoantibody-mediated identification of antigens), a novel target identification technology based on the immunoprecipitation of disease-specific antigens by autologous serum antibodies followed by two-dimensional electrophoretic separation, and their identification via mass spectrometry. Twenty-seven potential carcinoma antigens were identified including proteins of hitherto unknown function. Validation of one of the identified antigens, cytokeratin 8, revealed its de novo expression in hyperplastic tissue, gradual overexpression with increasing malignancy, and ectopic localization on the cell surface. Furthermore, a strong prevalence of CK8-specific antibodies occurred in the serum of cancer patients already at early disease stages. In situ hybridization for one marker of unknown function, KIAA1273/TOB3, demonstrated its strong overexpression in head and neck carcinomas, thus making it a likely tumor antigen candidate. Eventually, AMIDA could foster significant improvements for the diagnosis and therapy of human diseases eliciting a humoral immune response, and allows for the rapid identification of new target molecules.Received 30 January 2004; received after revision 3 March 2004; accepted 8 March 2004     

8-羟基喹啉-5-磺酸-溴代十六烷基三甲铵荧光法测定微量镓

研究了在溴代十六烷基三甲铵存在下，８－羟基喹啉－５－磺酸与镓的络合反应。λｅｘ＝３８８ｎｍ，λｅｍ＝５０６ｎｍ。镓含量在０～０．５６ｍｇ／Ｌ范围内服从比耳定律，对含镓量０．００２７％的矿样平行测定７次，相对标准偏差为１．９％，回收率为９７．３％～１０２．０％。     

桉叶油挥发性成份的研究

采用水蒸汽蒸馏收集桉叶精油,经气相色谱/质谱/计算机联用检测和气相色谱保留指数法,分析鉴定出含量较多的17种化合物,其主要成份为1,8—桉树脑,α—蒎烯,香芹酮等。     

江苏南部江阴—太湖地区陆地卫星数据图象增强及断裂构造解译

本文用陆地卫星多光谱扫描数据的计算机图象增强技术、野外地质调查和地质解译相结合的方法,对江苏南部江阴—太湖地区的隐伏断裂构造进行了研究。增强图象的目的,在于揭露与地质有关的综合信息所表现的隐伏构造。在研究区,目前已推断出三类较明显的断裂构造: 1.线性构造:常州—江阴断裂;无锡—苏州断裂;南阳山—白茆断裂和北西向及北东向的太湖断裂。 2.弧形构造:常州—江阴—香山—沙洲弧形构造;茅茂山—龟山—虞山弧形构造和宜兴—无锡弧形构造。 3.苏州环形构造。     

中南区7—22岁学生大脑机能某些特征的研究

本文使用80.8神经类型表为心理测量工具,对中南五省7～22岁学生约2万个样本进行测试,以探讨研究当代青少年大脑机能的某些发展特征,同时,为证实80.8神经类型量表的效度并为青少年运动选材提供参考常模。