This study examined the effect of sonication on FTIR and stability at various temperatures in water-based lubricants with a mixture Carboxymethyl Cellulose (1wt%) Uncaria Gambir extract (1wt% 2wt%). The sample was prepared by mixing two materials into distilled water using magnetic stirrer sonicator time variations 5 10 minutes. Before mixing, solution is first centrifuged to remove dregs powde...

the degradation of poly (vinyl pyrrolidone) (pvp) by means of ultrasound irradiation and itscombination with heterogenous photocatalysis (tio2 nanoparticles) was investigated. emphasiswas given on the effect of additive on degradation rate constants. 24 khz of ultrasoundirradiation was provided by a sonicator, while an ultraviolet source of 30 w was used for uvirradiation. to increase the effic...

Objective: Vitamin E acetate has antioxidant activity that can prevent premature aging of the skin, but it is highly lipophilic (log p±12.2) and potentially degraded. To overcome permeability stability problems, vitamin needs to be developed in Nanostructured Lipid Carrier (NLC), a nano-delivery system based on solid lipid liquid stabilized by surfactants as colloidal system.
 Methods: The...

Ferulic acid (FA) is widely used as an antioxidant, e.g., as a Ultraviolet (UV) protectant in cosmetics and in various medical applications. It has been produced by the hydrolysis of γ-oryzanol found in rice bran oil soapstock. In this study, the base-catalyzed, homogenous hydrolysis of γ-oryzanol was conducted using various ratios of potassium hydroxide (KOH) to γ-oryzanol, initial concentrati...

Objectives: The objective of this endeavour is to prepare βcyclodextrin (β-CD) inclusion complex with sulfonamide (SAP) using the co-evaporation technique and screened its effect on in-vitro antimicrobial property against some Gram-positive and Gramnegative bacteria. Methods: A new sulfonamide SAP (4-amino-N-(1, 5-dimethyl-3oxo-2-phenyl-2, 3-dihydro-1H-pyrazol-4-yl) benzene sulfonamide) 4 has b...

Aim. Recent studies have indicated that non-oral microorganisms are able to colonise intraoral devices such as orthodontic retainers. The aim of this study was to evaluate the effectiveness of chemical and mechanical elimination of Staphylococcus aureus biofilms (MRSA) from thermoplastic discs which were used to represent orthodontic retainers. Methods and Results. Methicillin-resistant Staphyl...

The protein releasing kinetics of Saccharomyces cerevisiae cells were investigated by using the ultrasonication method. The effects of acoustic power, duty cycle % of a sonicator, medium pH and cell concentration on protein release were examined. An attempt was also made to enhance cell disruption further by adding glass beads to the solution. An increase with protein release was observed with ...

The conversion into nanofluids is considered a suitable solution to increase the heat transfer efficiency of such fluids. Several theories with an emphasis on different thermal nanofluid mechanisms have appeared to predict enhanced conductivity measurements. There are many ways to measure the thermal conductivity of fluids. Some researchers argued that the anomalous k enhancement data are cause...

Enterococcus faecalis are gram positive bacteria that can mostly resist endodontic therapy, inducing persistent infection in the root canal system. Endodontic sealers with antimicrobial activity may help eliminate residual microorganisms that survive endodontic treatment. The present study aimed at comparing the antimicrobial activity of Acroseal, Sealapex and AH Plus endodontic sealers in an i...

The purpose of this experimental study is to evaluate the effects of particle species, surface charge, concentration, preparation technique, and base fluid on thermal transport capability of nanoparticle suspensions (nanofluids). The surface charge was varied by changing the pH value of the fluids. The alumina (Al2O3) and copper oxide (CuO) nanoparticles were dispersed in deionized (DI) water a...