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. Keita , Y. , Yoshihiro , Y. & Masao , O. ( 2004 ): Changes in concentrations of resveratrol and its related compounds in red wine during alcoholic and malolactic fermentation . J. Jpn. Soc. Food Sci. , 51 ( 5 ), 274 – 278

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The lactic acid bacteria are key microorganisms for the production and preservation of fermented dairy products, cheeses, sourdough bread, and lacto-fermented vegetables. This study was developed to monitor lactic acid produced by Lactobacillus plantarum ATCC 8014 and Lactobacillus casei ATCC 393, as single strains and combined, in fermenting media by Fourier Transform Infrared Spectroscopy coupled to multivariate statistical analysis. Media containing different mixtures of carbohydrates were chosen as model fermenting media for monitoring lactic acid concentration by infrared spectroscopy, due to the fact that vegetable and animal food matrices could contain different carbohydrates as carbon sources. Three different types of media were obtained by adding different carbohydrates to a basic MRS medium. HPLC was used as reference method for lactic acid quantification. The calibration set (n=36) was used for building model, while a validation set (n=13) for testing the robustness of the developed model. The coefficients of determination between predicted and reference values were 0.986 and 0.965, while root mean square error for calibration and validation sets recorded values of 0.127 and 0.263 g·l−1, respectively. Results confirmed the efficiency of FTIR spectroscopy combined with multivariate statistics, as a rapid, reliable, and cost-effective tool for routine monitoring of lactic acid.

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nickel. In this study, we investigated the effect of nickel on the wettability of the copper substrate by tin–nickel solder. Furthermore, the microstructure and the distribution of the concentration of nickel were investigated. During the wetting test

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polymer solution plays a significant role for fiber morphology and diameter in the electrospinning process. Generally, it is a common way to control the viscosity of the solution by adjusting various properties, such as solution concentration, polymer

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effect of coating characteristics, e.g., different microstructures, concentrations of impurity phases, and indices of crystallinity, on the mechanical strengths properties of the plasma-sprayed Hap-coated Ti implans . The results showed that the

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Resolution and Discovery
Authors: Taťána Fenclová, Zdeněk Jonšta, Miroslav Hnatko, Josef Kraxner, and Pavol Šajgalík

manifested by the formation of HA on the surface of the samples and thus by lowering the concentration of Ca 2+ and PO 4 3− ions in the SBF solution after luffing. The concentration of Ca 2+ and PO 4 3− ions is therefore determined by the inductively

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environment of the human body. The simulated body fluid (SBF) is an example of an artificial solution, which should contain similar inorganic ions (Ca 2+ , Mg 2+ , K + Na + , HPO 4 2- , Cl − ) in similar concentrations to those of the human blood plasma to

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time). It was found that cracks in the reflow-soldered joint propagated from the solder surface to the inner joint as a result of stress concentration deriving from the mismatch of various thermal expansion coefficients in the joint assembly. High

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meteoritical cooling rates. Goldstein et al. [ 2 ] estimated this parameter using the diffusion coefficients for Ni in Fe. Another method [ 2 , 3 ] was based on a processing of Ni concentration data across kamacite band and taenite–kamacite border. Later, the

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Resolution and Discovery
Authors: Haroune Rachid Ben Zine, Filiz Cinar Sahin, Zsolt E. Horváth, Zsolt Czigány, Ákos Horváth, Katalin Balázsi, and Csaba Balázsi

amount of oxygen in it; however, the side 2 (A″) of Figure 9 c shows a very high concentration of the silicon, nitrogen, and oxygen. This means that the dark phase (A″) is a combination of silicon oxide and silicon nitride which explains its higher

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