butyl alcohol/karies

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The acidity of tert-butyl alcohol in near- and supercritical water: a polarizable continuum approach.

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We use a polarizable continuum approach to study the acidity of tert-butyl alcohol in water at ambient, near-critical, and supercritical conditions. In the most straightforward calculation, the bare ionic species (the tert-butoxy anion and the hydronium cation) are placed in cavities surrounded by a

[Phenomena of supramolecular assembly fluid room temperature phosphorescence (II)--effects of alcohols on room temperature phosphorescence of cyclodextrin/4-iodo-4'-ethyl-biphenyl/bromocyclohexane system].

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Beta-cyclodextrin( beta/-CD)can induce 4-iodo-4'-ethyl-biphenyl(IEBP)to emit room temperature phosphorescence(RTP) in the presence of bromocyclohexane (BCH). If butyl alcohol (BuOH) is presented as a fourth component at the same time, RTP intensity of the system is enhanced obviously. Effects of

Fluorescence study of arene probe microenvironment in the intraparticle void volume of zeolites interfaced with bathing polar solvents.

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Fluorescence methodologies have been utilized to examine micropolarity, intramolecular motion, and singlet quenching in the intraparticle void volume of zeolites X, Y, and ultrastable Y (USY) interfaced with bathing polar solvents. Micropolarity was assessed from the 3-to-1 band ratio (III/I) of the

New activities of a catalytic antibody with a peroxidase activity: formation of Fe(II)-RNO complexes and stereoselective oxidation of sulfides.

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In order to estimate the size of the cavity remaining around the heme of the 3A3-microperoxidase 8 (MP8) hemoabzyme, the formation of 3A3-MP8-Fe(II)-nitrosoalkane complexes upon oxidation of N-monosubstituted hydroxylamines was examined. This constituted a new reaction for hemoabzymes and is the

Sonochemical and photosonochemical degradation of 4-chlorophenol in aqueous media.

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The degradation of 4-chlorophenol (4-CP) in aqueous media by 516 kHz ultrasonic irradiation was investigated in order to clarify the degradation mechanism. The degradation of concentrated 4-CP solution by means of ultrasound, UV irradiation and their combined application was also studied. The

[The evaluation of periodontal status by the chemical composition of the oral media].

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Twelve patients aged 21-38 years with gingivitis and periodontitis and 9 subjects with intact periodontium were examined. Air from the oral cavity was collected with a special device, liquid samples were collected by gargling with sterile water. Chemical composition of the air and washings was

Sonochemical destruction of nonylphenol: effects of pH and hydroxyl radical scavengers.

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Nonylphenols are water-stable endocrine disrupting compounds that inhibit the growth of sewage bacteria in biological processes. The study describes the decomposition of 4-n-nonylphenol (NP) in water by 20 kHz ultrasound with emphasis on the impacts of pH, concentration and OH scavengers. It was

Effect of CPP-ACP paste on tooth mineralization: an FE-SEM study.

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Milk and milk products, such as cheese, have been shown to exhibit anticariogenic properties in human and animal models. CPP-ACP shows an anti-caries effect by suppressing demineralization, enhancing remineralization, or possibly a combination of both. The purpose of this study was to evaluate the

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