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This is due to a poor understanding of the fundamental mechanisms driving graphene exfoliation, and a reliance upon purely empirical parameters such as sonication time 13, temperature …
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The effect of sonication time on the particle size distribution will therefore be presented for stock solutions with particle concentrations of 1 g/L. The extension of the sonication time (delivered acoustic energy) from 3 (180 s) to 15 min (882 s) resulted in the disintegration of larger agglomerates into units of smaller size for the Cu, Mn ...
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The objective of this study was to evaluate the effect of sonication time and pulse frequency on average dispersion temperature (ART), particle size and zeta potential of solid lipid nanoparticles ...
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This paper describes the effect of temperature, time, solvent and sonication conditions under air and Argon for the preparation of micron and sub-micron sized vermiculite …
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Investigation of the effect of ultrasound (US) treatment with different sonication times on quality parameters of probiotic GY during refrigerated storage suggests that 6 min of …
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The optimum extraction conditions for total phenolic compounds from dried olive leaves were determined by using response surface methodology. Central composite design was used to investigate the effects of four independent variables such as solvent composition (ethanol in water, 20 to ), extraction temperature (20 to 60 °C), extraction time (4 …
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The effects of temperature, time, solvent and sonication conditions under air and Argon are described for the preparation of micron and sub-micron sized vermiculite particles in a...
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A four factors, three levels Box-Behnken design was adapted in this study to investigate and optimize the effect of the independent variables – ultrasonic amplitude (X 1), ethanol concentration (X 2), temperature (X 3) and time (X 4) – on the balsam, TPC and TFC.The coded levels of the variables are shown in Table 1.All calculations and …
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DOI: 10.1016/j.ultsonch.2013.10.010 Corpus ID: 19235499; Effect of sonication conditions: solvent, time, temperature and reactor type on the preparation of micron sized vermiculite particles.
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3. ISTO, 1A Rue de la Férollerie, 42071 Orléans Cedex 2, France. 4. Department of Metallurgy and Materials Engineering (DMME), Pakistan Institute of Engineering and Applied Sciences (PIEAS), PO Nilore, Islamabad 45650, Pakistan. 5. Department of Chemistry, Hazara University, Mansehra 21120, Pakistan.
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The influence of sonication conditions (amplitude of ultrasound probe = 50, and 75%, time = 5, 10 and 15 min and temperature = 45, 55 and 65 °C) on the properties of yoghurt was investigated ...
DetailsAqueous extracts from Ascophyllum nodosum brown edible seaweeds were obtained after continuous ultrasound-assisted extraction. The effect of sonication time (from 2 to 6 min), sonication amplitude (from 80 to ) and solvent-solid ratio (from 20 to 40 g water g−1 dried seaweed) on the extracts features was studied employing a Box …
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The effects of temperature, time, solvent and sonication conditions under air and Argon are described for the preparation of micron and sub-micron sized vermiculite particles in a...
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The effects of sonication power, thermal pre-treatment, temperature, and contact time on detachment percentage were examined, and the best conditions (namely, no pre-treatment, medium sonication power of 450 W, temperature of 60 °C, and a contact time of 120 min) were found for total component detachment.
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Sonication promotes the dissolution of Na exchangeable cations through exfoliation. Improved exfoliation by sonication at 90°C in water or at room temperature in …
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The effect of surfactant and sonication time on the stability and thermal conductivity of water-based nanofluid containing Mg(OH)2 nanoparticles: An experimental investigation. Int. J.
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The influence of several parameters on the extraction of Labisia pumila were investigated : extraction time (1-8 hours), temperature (40,50,60, and 80 °C), and sonication (40% duty cycle …
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Major conditions to be optimized include the extraction time, the amount and polarity of the solvent, and the type and amount of the sample. This method allows extraction of a large number of samples at the same time in an ultrasonic bath and is adequate for thermally labile analytes, since extraction is performed at room temperature.
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However, the effects of mixing are different from the effects induced by US, with the crystals obtained under sonicated conditions being superior in terms of uniformity with respect to size and shape [14], [73], [85], as it is shown in Fig. 5. Crystals obtained with sonication are more regular, and no agglomeration has been detected.
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The Box-Behnken design improves and optimizes the polymeric nanoparticle preparation conditions using a simple emulsion-solvent evaporation technique. ... mean particle size for dispersions prepared at cycles of 20 s sonication time to 10%, 20%, and 30% of power, (B) PDI for dispersions prepared at cycles of 20 s sonication time to …
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Whereas the negative linear effect of time on yield has been reported for pectin from sour orange peel, phenolic compounds from coconut (Cocos nucifera) shell powder in the time range 20–60 min . For the extraction of oil from papaya seed the yield increased with time at high temperature and high solvent to solid ratio . For the …
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DOI: 10.1111/1471-0307.12761 Corpus ID: 233836141; Effect of sonication conditions: Time, temperature and amplitude on physicochemical, textural and sensory properties of yoghurt
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During sonication, the solvent and decomposition products volatilized, thereby lowering the specific heat ratio and average temperature in the bubble. When the vapor pressure is extremely low, the solvent does not volatilize into the cavitation, so the obtained average temperature was assumed to be the cavity temperature without …
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The influence of sonication conditions (amplitude of ultrasound probe = 50, and 75%, time = 5, 10 and 15 min and temperature = 45, 55 and 65 ºC) on the properties of yoghurt was investigated.
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This paper describes the effect of temperature, time, solvent and sonication conditions under air and Argon for the preparation of micron and sub-micron sized vermiculite particles in a Rosett-type reactor. The resulting material were characterized via X-ray powder diffraction (XRDP),
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Sonication time effect on evaporation rate of GNP@MWCNT nanofluid was investigated. • Optimum sonication time was obtained at 120 min with 61.3% evaporation efficiency. • Effect of nanoparticle mass fraction and irradiation on efficiency was studied. • GNP@MWCNT nanofluid at 120 min sonication showed the best cost-efficiency. •
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The bubbles breakdown, which is called cavitation, creates dramatic effects in the sonicated liquid and give rise to pressures up to 1000 atm and temperatures of up to 5000 K [Citation 11].Acoustic cavitation impact is strong enough to split up the fine particle agglomerates and disperse them more uniformly in liquids [Citation 12].In the …
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Based on experimental results, the optimum raw materials to solvent ratio was 1:30, solvent concentration was 70%, extraction temperature was 50°C, ultrasonic power was 60% and extraction time ...
DetailsEffect of sonication conditions: solvent, time, temperature and reactor type on the preparation of micron sized vermiculite particles. (PMID:24262759) PMID:24262759
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Quicker preparation of micron-sized vermiculite by sonication in Rosett reactor. Reagglomeration for sonication time length higher than 5h. Sonication promotes the dissolution of Na exchangeable cations through exfoliation. Improved exfoliation by sonication at 90°C in water or at room temperature in H 2 O 2 . Highest content of …
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The effects of time, temperature, solvent: Solid ratio and solvent composition on extraction of total phenolic compound from dried olive (Olea europaea L.) leaves January 2010 35(6):411-416
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The apparent viscosity, hardness and lightness increased when sonication time, temperature and amplitude increased. At 75% of amplitude, the pH, syneresis and …
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The effects of sonication power, thermal pre-treatment, temperature, and contact time on detachment percentage were examined, and the best conditions (namely, no pre-treatment, medium sonication power of 450 W, temperature of 60 C, and a contact time of 120 min) were found for total component detachment. Additionally, the
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The effects of temperature, time, solvent and sonication conditions under air and Argon are described for the preparation of micron and sub-micron sized vermiculite particles in a double-jacketed ...
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Effect of sonication conditions: Solvent, time, temperature and reactor type on the preparation of micron sized vermiculite particles
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