钛基铱钽氧化物阳极用于电合成丁二酸的应用研究

以自制的Ti/IrO2＋Ta2O5电极为析氧阳极,以铅为阴极,开展电还原顺丁烯二酸以合成丁二酸的实验研究。结果表明,与传统的铅阳极相比,该电极直流电耗低、寿命长、产品收率有所提高。     

Effects of La^3＋on microwave dielectric properties of（Pb0.5Ca0.5）（Fe0.5Ta0.5）O3ceramics

This work investigated the microwave dielectric properties of A-site substitution by rare earth La3+in(Pb0.5Ca0.5)(Fe0.5Ta0.5)O3(PCFT) system.A single perovskite phase was obtained only when the doping content was 2%.Suitable La3+ doping improved microwave dielectric performances.Excessive La3+doping caused the formation of secondary phase,which resulted in the decreasing of permittivity εrand quality factor Qfvalues.Especially,when the doping content is 2%-5%,permittivity εrwas above 75 and Qfvalues were 6...     

Enhancing cellular immune response to HBV M DNA vaccine in mice by codelivery of interleukin-18 recombinant

Objective: To investigate the effect of interleukin-18 (IL-18) on immune response induced by plasmid encoding hepatitis B virus middle protein antigen and to explore new strategies for prophylactic and therapeutic HBV DNA vaccines. Methods: BALB/c mice were immunized with pCMV-M alone or co-immunized with pcDNA3-18 and pCMV-M and then their sera were collected for analysing anti-HBsAg antibody by ELISA; splenocytes were isolated for detecting specific CTL response and cytokine assay in vitro. Results: The anti-HBs antibody level of mice co-immunized with pcDNA3-18 and pCMV-M was slightly higher than that of mice immunized with pCMV-M alone, but there was not significantly different (P>0.05). Compared with mice injected with pCMV-M, the specific CTL cytotoxity activity of mice immunized with pcDNA3-18 and pCMV-M was significantly enhanced (P<0.05) and the level of IFN-γ in supernatant of splenocytes cultured with HBsAg in vitro was significantly elevated (P<0.05) while the level of IL-4 had no significant difference (P>0.05). Conclusion: The plasmid encoding IL-18 together with HBV M gene DNA vaccines may enhance specific TH1 cells and CTL cellular immune response induced in mice, so that IL-18 is a promising immune adjuvant.     

Studienförderung für Auslandsstudien

In der Entscheidung Morgan und Bucher hat der Europäische Gerichtshof zwei Regelungen des deutschen Bundesausbildungsförderungsgesetzes zur Ausbildungsförderung für Auslandsstudien als gegen die Freizügigkeit der Unionsbürger nach Art 18 EGV verstoßend und somit gemeinschaftsrechtswidrig angesehen. Das Urteil unterstreicht die Bedeutung, die der Gerichtshof der Freizügigkeit und der Gleichbehandlung von Unionsbürgern im Bildungsbereich zuerkennt. Dies wird von Österreich auch bei Klärung der Hochschulzugangsproblematik zu berücksichtigen sein. Das durch eine Novelle zum österreichischen Studienförderungsgesetz eingeführte Mobilitätsstipendium ist entsprechend den vom Europäischen Gerichtshof in Morgan und Bucher entwickelten Grundsätzen am Gemeinschaftsrecht zu messen.     

白细胞介素18及其生物活性

白细胞介素18(IL-18)是新近发现的一种细胞因子，能诱导TH1细胞等产生IFN-r，GM-CSF等细胞因子及Fas配体，具有增强THI细胞和NK细胞的细胞毒作用等免疫调节功能，在抗病原微生物感染、抗肿瘤及抗超敏反映等方面具有潜在的应用前景，同时，它也是内毒素诱导的小鼠肝坏死性休克的关键因子。     

生命发展的非连续性及其教育--兼论博尔诺夫的非连续性教育思想

生命的发展是连续性和非连续性的统一,但以往教育学对人的发展的研究,注重的是发展的连续性,忽视了发展的非连续性.针对这一缺陷,本文论述了生命发展非连续性的原因以及它的教育形式,重点评述了博尔诺夫的非连续性教育思想.     

Research on Gelcasting Formation of SiC-Al_2O_3-Y_2O_3-La_2O_3 Systems

Siliconcarbide (SiC)ceramicmaterialsareusefulad vancedmaterialsinmanyfields,suchasmedicalbiomateri als ,hightemperaturesemiconductors ,synchrotronopticalel ementsandhighstrength /lightweightstructuralmaterials[1] .However,theactualapplicationisstilllimitedduetoitslowreliability ,highmachiningcosts[2 ] .Gelcastingprovidesane conomicalandfeasiblenet shape forminghomogeneousandflawlessgreenbodieswithcomplexgreenshapes.　　Gelcastingconsistsofin situpolymerizationthroughwhichamacromolecularnetwor…     

CuO气敏元件的制备及气敏性能研究

用Cu2O制备CuO气敏元件，对乙醇、汽油、丁烷和氢气等气氛进行气敏试验，并进行机理分析，结果表明，由Cu2O制备的CuO气敏元件，对所测气体的灵敏度优于由CuO制备的气敏元件。     

催化动力学光度法测定痕量钒(V)

研究了在酸性介质中痕量钒催化 H2 O2氧化抗坏学酸体系的反应和动力学条件 ,建立了催化动力学光度法测定痕量钒的新方法。该方法的检出限为 0 .0 5 ng/ m L ,线性范围为 0～ 0 .5μg/ 2 5 m L ,该方法用于水样及人发中痕量钒的测定 ,结果令人满意     

The innovative performance of in-house and contracted R&D in terms of patents and utility models

The standard empirical framework for analysing the R&D-patents relationship is widened both by examining the different role of in-house and contracted R&D in the innovative performance of firms, and by considering patents and utility models counts as measures of innovation output. Patents and utility models are considered to approximate for significant and incremental innovations, respectively. Applying count data econometrics to a panel data set of Spanish manufacturing firms surveyed in the period 1990-1996, a transcendental production function is estimated, which allows for non-constant elasticities of the R&D inputs. The results indicate that significant innovations are mainly gestated in-house, whereas contracted R&D seems more orientated towards innovations of incremental nature.