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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 62 for “"crystal violet"”.
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Photodecomposition of crystal violet dye in water solution and suspensions of metal oxides
1 PDF file (ix, 45 pages)
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An investigation into the enzymatic activity of deepsea actinobacteria in decolourising crystal violet dye
Crystal Violet (CV) decolourising deep-sea actinobacteria could provide a great source of novel redox biocatalysts that can be used in various applications such as removal of triphenylmethane dyes from contaminated wastewater and soil, degradation of aromatic environmental pollutants, …
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Metabolism, nutritional effects, and mutagenesis of crystal violet decolorization by a biofungicide agent Pseudomonas putida strain M-17
… colonies grown on media containing 10 mg/l crystal violet. This decolorization reaction was constitutively produced when the growth medium contained glucose and asparagine, but was inhibited by the substitution of ammonia, nitrate or urea for the amino acid nitrogen source. However, a …
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Assessment of dairy product quality by selective incubation and rapid techniques
… inhibiting growth of gram-positive organisms. Crystal violet, benzalkonium chloride, a mixture of crystal violet and benzalkonium chloride, and alkylaryl sulfonate were tested. These were incubated with milk samples separately inoculated with gram-negative and gram-positive bacteria, at 2l°C …
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Biofilm Formation by Moraxella Catarrhalis
… autoagglutination, and binding of human IgD. A crystal violet-based assay utilizing 24-well tissue culture plates was also used to evaluate biofilm formation by M. catarrhalis. The ability of M. catarrhalis strains to form biofilms in this crystal violet-based assay varied considerably, but most …
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The electronic absorption spectra of di- and tri-arylmethane dyes containing fluorine
… series of derivatives of Malaohite Green, Crystal Violet and Michler's Hydrol Blue has been synthesised containing meta-trifluoromethyl groups. Such dyes have not been previously prepared because of earlier difficulties encountered in synthesising N.N-dimethyl-2-tri -fluoromethylaniline. A …
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CMOS-Compatible Wafer-Scale Synthesis and Rapid Characterization of Two-Dimensional Transition Metal Dichalcogenides
… and novel alkali-free promoters (e.g. NH4Cl and crystal violet) on synthesis of monolayer MoS₂. By optimizing the NaCl-promoted route, we achieve coalesced monolayer MoS₂ films with enlarged grain domains and demonstrate field-effect transistors with improved mobility. In parallel, we develop a …
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The chemistry of some basic triphenylmethane dyes
… Green, and those with three terminal groups, the Crystal Violet series. N,N-dimethylamino--, N,N-diethylamino-, pyrrolidino-,piperidino and morpholino- grou'ps have been slected as terminal groups in order to give a wide variation in both structural and basic characteristics. Spectral data for …
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High Pressure Studies of Triphenylmethane Dye Molecules (Photosensitization, Adsorption, Isomerism, Semiconductors, Surfaces)
… adsorption of the methyl derivative of the dye (crystal violet, CV) on oriented ZnO(0001) semiconductor surfaces. Secondly, optical absorption measurements have been made on the hydrogen, methyl and ethyl derivatives both in solution (to 10 kbar) and dissolved in plastic media (to 150 kbar) to …
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The chemistry of some polysubstituted derivatives of di - and triphenylmethane dyes
… the 3,4-dimethoxy derivative. The preparation of Crystal Violet and Malachite Green derivatives containing ortho- chioro and fluoro substituents in the dimethylaminophenyl rings has enabled the spectral-changes resulting from the steric and electronic interaction of substituents with the central …
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The Use of Natural Products as Potential Anti-Pseudomonas Agents
… of biofilm formation was also determined using crystal violet assay. The results indicated that the selected natural products have antibacterial effect and anti-biofilm formation on <em>Pseudomonas</em>. Of the seven compounds studied 2.5% theaflavin, 2.5% Chinese Knotweed, and 500 μM of …
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Hodnocení efektivity vybraných metodických přístupů za účelem disagregace stafylokokové biofilmové biomasy
… method of quantification of biofilm biomass by crystal violet staining was...
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An investigation into the active sites in co-reactants for carbonless copying paper
… clays, the reactivity of a primary dye, Crystal Violet Lactone(CVL), on a range of activated aluminas, an investigation of the Lewis and Brønsted acid characteristics of transition metal ion exchanged clays and the effectiveness of aluminosilicate materials in catalysing inorganic ligand …
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Uji efektifitas jamu keputihan terhadap pertumbuhan jamur Candida albicans
… dinding sel sehingga pada saat diwarnai dengan crystal violet berwarna pucat dibandingkan jamu keputihan yang lain. Hal ini menunjukkan bahwa jamu keputihan yang paling efektif yaitu jamu keputihan sidoarjo dengan konsentrasi 100%. ENGLISH: Whitish Herb in Indonesia have seen variations of its …
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Pemanfaatan kunyit putih Curcuma mangga val. pada penghambatan pertumbuhan jamur keputihan Candida albicans dan kerusakan dinding sel
… yang terparah sehingga pada saat diwarnai dengan crystal violet berwarna pucat dibandingkan dengan konsentrasi yang lain. ENGLISH: White turmeric (Curcuma mango Val.) Is one of the many traditional medicinal plants in Indonesia. One is the use of turmeric as a cure white vaginal discharge. Whitish …
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Alkyl, alkenyl and cycloalkyl substituted triphenylmethane dyes
… an explanation is postulated. The preparation of Crystal Violet and Malachite Green derivatives containing meta- isopropyl substituents has enabled the spectral changes resulting from the steric interaction of substituents with the terminal dimethylamino groups to be determined and by comparison …
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A kinetic and photochemical study of some basic dyes
A series of dyes related to Crystal Violet have been synthesised in addition to a range of substituted oxygenbridged analogues of Malachite Green. The dye perchiorates have been prepared from the corresponding carbinols or leuco bases. The influence of the terminal group and the bridging unit …
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Gallium-based Ultraviolet Nanoplasmonics
… Au and Ag. Plasmonic applications in ultraviolet (UV) are of great interest because Raman scattering sections are larger and do not overlap fluorescence spectra. UV plasmonics also benefit from high spatial resolution and low penetration depth. However, an appropriate UV plasmonic material …
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Antibacterial Evaluation of Polygonum Multiflorum
… and biofilm quantification was acquired through crystal violet assay. Finally, Chinese Knotweed was evaluated on the effects of inhibiting sporulation and germination of B. megaterium. The results suggest Chinese Knotweed contains strong antibacterial effects against all the bacteria tested in …
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