Articles with "different temperatures" as a keyword



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The role of ionic liquid [C4C1im]Br as an adjuvant on the two‐phase formation and the extraction of l‐phenylalanine in ABS composed of PEG400 and potassium citrate at different temperatures

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Published in 2018 at "Biotechnology Progress"

DOI: 10.1002/btpr.2657

Abstract: The potential of {polyethylene glycol 400 + potassium citrate} aqueous biphasic system (ABS) with ionic liquid (IL) 1‐butyl‐3‐methylimidazolium bromide ([C4C1im]Br) as an adjuvant is examined for the extraction of l‐phenylalanine (Phe), as a model biomolecule, at different… read more here.

Keywords: phase; extraction; different temperatures; partition ... See more keywords
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Persistence of microbial extracellular enzymes in soils under different temperatures and water availabilities

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Published in 2020 at "Ecology and Evolution"

DOI: 10.1002/ece3.6677

Abstract: Abstract Microbial extracellular enzyme activity (EEA) is critical for the decomposition of organic matter in soils. Generally, EEA represents the limiting step governing soil organic matter mineralization. The high complexity of soil microbial communities and… read more here.

Keywords: temperature; extracellular enzymes; water; different temperatures ... See more keywords
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Growth characterization of Propionibacterium and propionic acid production capabilities at different temperatures and pH levels

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Published in 2022 at "Food Science and Biotechnology"

DOI: 10.1007/s10068-022-01038-7

Abstract: Bacteria from the Propionibacterium genus were cocktailed to investigate growth and production of propionic acid at different temperatures and pH levels. A gas chromatograph with a flame ionization detector was also used for instrumental analysis.… read more here.

Keywords: propionic acid; acid; growth; propionibacterium ... See more keywords
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Dielectric Relaxation and Thermodynamic Studies of Binary Mixtures of 2-Nitrotoluene with Primary and Secondary Alcohols at Different Temperatures

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Published in 2018 at "Journal of Solution Chemistry"

DOI: 10.1007/s10953-018-0744-x

Abstract: The dielectric complex spectra of 2-nitrotoluene with primary or secondary alcohol binary mixtures were studied over the frequency range of 10 MHz to 20 GHz for the whole solute mole fraction range at four different temperatures. An… read more here.

Keywords: binary mixtures; nitrotoluene primary; relaxation; dielectric relaxation ... See more keywords
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Hydration mechanisms of composite binders containing copper slag at different temperatures

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Published in 2019 at "Journal of Thermal Analysis and Calorimetry"

DOI: 10.1007/s10973-019-08116-9

Abstract: AbstractThe hydration mechanisms of composite binders containing copper slag at different temperatures (20 °C and 50 °C) were investigated by hydration heat determination, TG/DTG, non-evaporable water content measurement and X-ray diffraction (XRD). The compressive strengths of mortars… read more here.

Keywords: different temperatures; copper; copper slag; containing copper ... See more keywords
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Wear Resistance under Different Temperatures of NiCr-Cr3C2 Coating Remelted by Tungsten Inert Gas Arc

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Published in 2020 at "Journal of Materials Engineering and Performance"

DOI: 10.1007/s11665-020-05254-2

Abstract: In this work, a NiCr-Cr3C2 coating was prepared on the AISI 1045 steel substrate by plasma spraying, then subjected to tungsten inert gas arc (TIG) remelting treatment. The microstructure, hardness and the wear test under… read more here.

Keywords: nicr cr3c2; different temperatures; remelted coating; cr3c2 coating ... See more keywords
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Nondestructive Prediction of Tilapia Fillet Freshness During Storage at Different Temperatures by Integrating an Electronic Nose and Tongue with Radial Basis Function Neural Networks

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Published in 2018 at "Food and Bioprocess Technology"

DOI: 10.1007/s11947-018-2148-8

Abstract: This study developed principal component analysis and radial basis function neural networks (PCA-RBFNNs) for predicting freshness in tilapia fillets stored at different temperatures by integrating an electronic nose and electronic tongue. Total volatile basic nitrogen… read more here.

Keywords: radial basis; basis function; different temperatures; electronic nose ... See more keywords
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Mathematical Modeling of Fed-Batch Ethanol Fermentation Under Very High Gravity and High Cell Density at Different Temperatures

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Published in 2022 at "Applied Biochemistry and Biotechnology"

DOI: 10.1007/s12010-022-03868-x

Abstract: The use of more appropriate kinetic models can assist in improving ethanol fermentation under conditions of very high gravity (VHG) and high cell density (HCD), in order to obtain higher amounts of ethanol in the… read more here.

Keywords: fed batch; usepackage; ethanol fermentation; cell ... See more keywords
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Potentiometric Determination of the Stability Constants of Nano-Silicon Complexes in Mixed Solvent at Different Temperatures

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Published in 2019 at "Silicon"

DOI: 10.1007/s12633-019-0075-6

Abstract: The nano-silicon tetrachloride was prepared by an effective and environmentally friendly ball milling technique. The protonation constants of 2-oxo-N-(pyridine-2-yl)-2-(2-(1-(pyridin-2-yl)ethylidene)hydrazinyl)acetamide (H2L) and the stability constants of its nano silicon complexes were estimated by the potentiometric technique… read more here.

Keywords: nano silicon; different temperatures; constants nano; silicon complexes ... See more keywords
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Determining biaxial tensile stresses by fracture cruciform specimen at different temperatures and strain rates for Ti–6Al–4V alloy

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Published in 2018 at "Journal of the Brazilian Society of Mechanical Sciences and Engineering"

DOI: 10.1007/s40430-018-1455-3

Abstract: Fracture loci of a ductile sheet metal, in some stress subspaces, can be predicted by determining the fracture stress points in the same subspace. This paper deals with determining the fracture stress points for Ti–6Al–4V… read more here.

Keywords: fracture; temperatures strain; different temperatures; stress ... See more keywords
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Carbides precipitation and their evolution of Cr15Co10Mo5-alloyed heat-resistant bearing steel after tempering at different temperatures

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Published in 2019 at "Journal of Iron and Steel Research International"

DOI: 10.1007/s42243-019-00286-y

Abstract: The carbides precipitation and their evolution at elevated tempering temperature in Cr15Co10Mo5-alloyed heat-resistant bearing steel were investigated by means of the transmission electron microscope. The results show that there is no carbide precipitated from the… read more here.

Keywords: precipitation evolution; carbides precipitation; steel; different temperatures ... See more keywords