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The potential-time curves depicted in Figure 5 show long induction time and the serious effect of sonication on the equilibrium potential; stronger sonication leads to less negative deposition ... Regarding the effect of operative conditions, temperature increase plays a positive role enhancing the deposition yield and smoothing the …
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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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Linear effects (temperature, time and amplitude) and their interaction were signi cant and have shown a 95% con dence interval R 2 = 0.8477 evident from low p-value (p < 0.0001) and high F-value ...
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The effects of sonication time (ranging from 0 to 5 h) on the thermal conductivity of Al 2 O 3-water nanofluid at the solid concentration of 0.5 vol% and …
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were the extraction time, temperature, solvent-solid ratio and the ethanol concentration. Obtained results show that the recommended optimal conditions for the extraction of the total phenolic compounds from olive leaves were found at 40°C with a solvent/solid ratio of 30:1 and ethanol concentration of 80% (v/v)
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Another study discussed the effect of solvent properties on reaction efficiency, ... The sonication conditions, reaction vessel, atmosphere gas, and cooling system were the same as those used for sonoluminescence measurements. ... The high sonoluminescence intensity from aromatic alcohols can also be explained by the high …
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The results showed that sonication amplitude, time, temperature, membrane ratio, sample volume, and density need to be considered in order to optimize membrane coating of polymeric nanoparticles.
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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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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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Effect of sonication conditions: Solvent, time, temperature and reactor type on the preparation of micron sized vermiculite particles
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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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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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Effect of sonication conditions: solvent, time, temperature and reactor type on the preparation of micron sized vermiculite particles F. Ali, L. Reinert, Jean-Marc Lévêque, L. Duclaux, Fabrice Muller, Shaukat ... temperature effect, Argon . 1. Introduction Vermiculite has been exploited widely over the past 60 years as a valuable insulating ...
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Sonication time effect on evaporation rate of GNP@MWCNT nanofluid was investigated. ... Given the conditions, the total efficiency will increase insignificantly. By comparing two figures, it can easily be seen that the GNP@MWCNT composite nanofluid has an effective role in the efficiencies. ... effects of temperature and concentration. Int ...
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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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Buonomo et al. [62] investigated the effect of sonication time and temperature on thermal conductivity of Al 2 O 3-water nanofluid over different ranges of solid concentrations (0.1–20%) and temperatures (25–65 °C). They found that variations of sonication time have no considerable effect on the thermal conductivity of the nanofluid.
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The effects of ultrasonication time, power, solvent and temperature are studied by the author Zhang and Chen [84] and the Fig. 10 (a). gives the images of SEM showing the graphene nanoparticles morphology before and after sonication, the amount of the agglomeration and size of the agglomerates are seen in the Fig. 10 (b) and …
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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.
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The latter was prevented under the micellar conditions attained with sonication. Scheme 15 ... whose condensation gives rise to quinolines in 75–95% yield at room temperature under sonication (22 kHz ... Attempts to classify sonochemical reactions can result in ill-conceived conclusions if structural and solvent effects that …
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Sonication time and energy transmission to solvent were adjusted using time and amplitude regulation whereby the range of output power supply was within 20–. To investigate the effect of sonication parameters, different solutions of fixed GNPs concentration (1 mg/mL) were added to the 100-mL ethanol solvent in which …
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The effects of temperature, time, solvent and sonication conditions under air and Argon are described for the preparation of …
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The effects of ultrasonication time, power, solvent and temperature are studied by the author Zhang and Chen and the Fig. 10 (a). gives the images of SEM showing the graphene nanoparticles morphology before and after sonication, the amount of the agglomeration and size of the agglomerates are seen in the Fig. 10 (b) and …
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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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We sonicated cell suspensions in 50, 100, 300 or 500 μL aliquots. As shown in Fig 2D, water level does affect sonication efficiency, most dramatically in the case of the 50 μL aliquot. This effect might be explained if the hot zone pattern and/or optimal sample volume depends on the water level.
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The same trend was obtained for Mahbubul et al. [79] who prepared alumina/water nanofluid (0.5 vol.%) of particle size 13 nm, using an ultrasonic homogenizer machine (model 505, Fisher Scientific) and investigated by varying the sonication time from 0 to 180 min by rheometer (LVDV-III ultra, Brookfield) at the temperature range 15°–45 °C ...
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to determine the effect of frequency, temperature, and time of sonication on the xanton content. The parameters controlled are frequency (20 - 40 kHz), temperature (25 - 35oC), and sonication time (20 - 40 minutes). The solvent used in the extraction was methanol with a ratio of mangosteen peel: solvent = 1: 10
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Sonication is defined as the process of cell lysis using sound waves. Learn more about the methods of sonication, the principle of ultrasonication, uses and parts of sonicator here. ... disintegration, emulsions, extraction, and sonochemical effects of the liquids. High power ultrasound is introduced to the liquid which creates regions of high ...
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Ultrasonication produces radicals as a result of critical temperature and pressure conditions, which are responsible for dietary component alterations. ... Sonication is a time-consuming method that is only suitable for small batches. ... Effect of solvent composition and its interaction with ultrasonic energy on the ultrasound-assisted ...
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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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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. The apparent viscosity, hardness and lightness increased when sonication time, temperature and amplitude increased.
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Key takeaway: 'The efficiency of ultrasound irradiation on preparing micron-sized vermiculite particles is significantly affected by temperature, solvent, gas type, and reactor type.'
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Systematic optimization of sonication conditions. Part 1. (A) Schematic of the Bioruptor XL water bath with tube positions numbered from 1 to 12 in the left (L) and right (R) carousels; red arrows indicate the alignment marks for carousel assembly and positioning. (B) The effect of sample volume on sonication efficiency at low power …
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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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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 Rosett-type or cylindrical reactor.
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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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