Influence of Dekkera bruxellensis on the contents of anthocyanins,organic acids and volatile phenols of Dão red wine

The anthocyanin, organic acid and volatile phenol compositions of red wine obtained from Touriga Nacional grapes growing in the Dão region (Portugal) were determined by HPLC/DAD, HPLC/UV and GC/FID, respectively. By these means, nine anthocyanic compounds (malvidin-3,5-O-diglucoside, cyanidin-3-O-galactoside, cyanidin-3-O-glucoside, peonidin-3-O-glucoside, malvidin-3-O-glucoside, delphinidin, cyanidin, pelargonidin and malvidin), six organic acids (ketoglutaric, tartaric, malic, quinic, lactic and shikimic acids) and two volatile phenols (4-ethylguaiacol and 4-ethylphenol) were identified and quantified. Malvidin-3-O-glucoside, the pair lactic plus shikimic acids and 4-ethylguaiacol were the main anthocyanin, organic acids and volatile phenol, respectively. The effects of nine different Dekkera bruxellensis strains on these chemical parameters were also evaluated. The results obtained indicate that some strains of D. bruxellensis yeast are able to cause deterioration of red wine from the Dão region during its maturation by the production of volatile phenols, namely 4-ethylphenol.     

Freiflächen; Einfamilienhaus; Schwimmbad

Unbebaut bleibende Fl?chen des Bauplatzes dürfen nur einer der Art und der zul?ssigen Verwendung der baulichen Anlage entsprechenden Benützung zugeführt werden. Die teilweise Benützung einer derartigen unbebauten Fl?che für ein Schwimmbecken (hier: 14 m² Fl?che, 1,5 m Tiefe) entspricht durchaus der ma?geblichen Wohnnutzung eines Einfamilienhauses.     

高效液相色谱法同时检测对苯二甲酸精制残渣中的八组分

采用高效液相色谱法,以弱极性阴离子交换键合固定相、磷酸盐缓冲溶液为流动相,UV 235 nm 检测,外标法定量,同时测定了对苯二甲酸精制残渣中的4-甲基苯甲醇,对甲基苯甲醛,4-羧基苯甲醛,苯甲酸,对甲基苯甲酸,对苯二甲酸,邻苯二甲酸和间苯二甲酸的含量,其回收率均在97.1%～105.4%之间,变异系数小于3.36%,相关系数为0.99163。     

Grundstücksteilung

Wird die zur Grundteilung erforderliche baubeh?rdliche Genehmigung nach Vertragsabschluss versagt, so begründet dies keine ursprüngliche Unm?glichkeit der Vertragserfüllung iSd § 878 ABGB.     

铜锌铁多金属矿石分选

研究了复杂难选镁质矽卡岩型铜锌铁多金属矿石的分选。所研究矿石组成和结构复杂,含铜、锌、铁等３０余种金属矿物。各种金属矿物嵌市粒度不均匀,密切共生,相互嵌镶,加上难浮墨铜矿和易氧化、具有磁性的磁黄铁矿的存在,导致分选的困难和流程结构的复杂。采用优先浮选－浮尾磁选－磁选精矿再磨后浮选脱硫－脱硫后铁精矿再磁选精选流程,以及使用合理的浮选药剂制度,能获得合格的铜、锌、铁精矿和好的分选指标。墨铜矿用硫酸法回收。     

Copolymers of aniline with o‐ and m‐toluidine: synthesis and characterization

Copolymers of aniline and toluidine were synthesized by oxidative chemical polymerization using different ratios of the monomers in the feed, and characterized by a number of techniques including UV–visible, IR, Raman, ¹H NMR and EPR spectroscopies, as well as by thermogravimetric analysis and conductivity measurements. The properties of the copolymers are influenced by the amount of toluidine in the copolymer. Poly(o‐toluidine) and poly(m‐toluidine) are noticeably different in their solubility and conductivity. The copolymers show better solubilities than polyaniline but have lower conductivities. Differences in the properties of the salt and base forms of the copolymers are pointed out. Copyright © 2003 Society of Chemical Industry     

?nderung von Geb?uden; Zustimmung der Miteigentümer

Die Zustimmung der Miteigentümer (hier: mittels Mehrheitsbeschluss der Wohnungseigentümer) muss sich bei untrennbaren Bauvorhaben (hier: Errichtung einer Eternitfassade, F?rbelung der Fassade) auf das gesamte Baugesuch beziehen.     

我国铅锌矿山工业竞争能力分析及可持续发展策略

文章分析了我国铅锌矿山工业的发展现状:生产企业规模小,整体实力弱,资源优势已逐渐消失,技术装备水平低,经济效益状况日趋艰难。文章同时提出了我国铅锌矿山工业持续发展的策略,即大力加强地勘工作,加强整顿矿业秩序,加大对老矿山改革重组力度和对新矿山建设的支持力度,制定支持矿业发展的财税政策的及大力提高矿山工业技术装备水平。     

Use of polymeric and non-polymeric surfactants in o/w emulsion formulation

An acrylic/alkyl acrylate co-polymer and a mixture of non-ionic surfactants (sorbitan monostearate and sorbitan monostearate(20)OE) were used to prepare o/w emulsions for cosmetic use. Formulations with optimal performances were obtained by selecting appropriate percentages of components through statistical procedures. The non-polymeric surfactants were seen to affect the stability and appearance of the emulsion, although they were used at low percentages (0.3–0.6%), and were seen to interact with the polymer in different ways. The influence of twelve w/o emulsifiers (alcohol-, glyceryl- and sorbitan-derivatives) on the emulsion was examined and models of stability and thixotropic module were calculated: the thixotropic behaviour of the emulsion depended on the structural characteristics of hydrophilic and hydrophobic moieties of the w/o surfactant molecule.