The use of energetic nanoparticles offers a promising means of adjusting the reactivity of liquid fuels for enhanced combustion stability in next generation propulsion systems. This work outlines the development of a novel aerosol rapid compression machine (RCM) for studying the impact of energetic nanoparticles on reducing the ignition delay of liquid fuels, and a proof-of-concept demonstratio...

Seeds of plants from Ipomoea genera contain numerous ergot alkaloids, including psychoactive ergine and ergometrine, and are often abused as so-called "legal highs." In this work, an analytical method for determination of ergine and ergometrine, and identification of other alkaloids was developed, optimized, and validated. Three extraction techniques, ultrasound-assisted extraction in bath, or ...

The feasibility of indirect application of low frequency ultrasound for demulsification of crude oil was investigated without using chemical demulsifiers. Experiments were performed in an ultrasonic bath with frequency of 35 kHz. Synthetic emulsions with water content of 12%, 35% and 50% and median of droplet size distribution (DSD), median D(0.5), of 5, 10 and 25 μm were prepared from crude oi...

One way to assess the efficacy of thermal therapy is to quantify changes in tissue properties through ultrasonic interrogation, which requires knowledge of the acoustic properties of thermally treated tissues. In this study, estimates of ultrasonic attenuation, speed of sound, backscatter coefficient (BSC), and scattering property estimates were generated from rat liver samples submersed for 10...

Known ultrasonic transducers for simultaneous generation of longitudinal and shear waves are reviewed: quartz and lithium niobate crystals tilted CdS and ZnO films. A special attention is devoted to the rotated cuts of PZT piezoceramics, literature data theoretical background conclusions are analysed. Manufacturing technology of dual mode PZT transducers with different cut angles and thickness ...

BACKGROUND Infection control procedures are essential for modern dental practice and they are continually evolving to meet the dental profession's high standards. The present study evaluated the efficacy of two cleaning procedures to reduce bacterial numbers on endodontic files, and evaluated the effect of biological debris on the subsequent sterilization of files. METHODS Stainless steel and...

Ultrasound has been widely employed in food industry, while some of its working parameters are usually neglected to be described in its application, which caused the difficulty of reproducing and comparing the results obtained by different groups. So it is definitely not sufficient to simply state the ultrasound conditions such as ultrasound power, frequency and t...

A 2 x 3 factorial designed experiment was conducted in order to examine whether freeze-dried rat spermatozoa can participate in full-term development following intracytoplasmic sperm injection (ICSI). A sperm suspension from cauda epididymides of Sprague-Dawley (SD) rats was prepared with or without ultrasonic treatment. The sonicated and non-sonicated sperm suspensions were processed for freez...

Preparation of the nanodiamonds (NDs) The raw, detonated NDs (NanoCarbon Institute, Japan) were acquired as colloidal particles and then dispersed in deionized water. The raw ND colloid was carboxylated in strong oxidizing conditions as previously reported. Briefly, the colloid was treated in acid mixture of 68% HNO3 : 98% H2SO4 ( 1:3 in volumn ) in ultrasonic bath for 24 h, followed by stirrin...