The longitudinal acoustic velocity in silica aerogel is presented as a function of the interstitial gas type and pressure. This was measured using air-coupled ultrasonic transducers configured for differential pulse transit time measurements. The results are interpreted in terms of the thermal relaxation of the acoustic pulse. The microscale temperature oscillations of the gas and solid phases ...

Proton transfer (PT) processes in solid-liquid phases play central roles throughout chemistry, biology and materials science. Identification of PT routes deep into the realistic catalytic process is experimentally challenging, thus leaving a gap in our understanding. Here we demonstrate an approach using operando nuclear magnetic resonance (NMR) spectroscopy that allows to quantitatively descri...

A short-cut model is developed for the predictive simulation of a three-phase distillation process in packed towers. The model is taking into account the mass transfer resistance between the vapour phase and both liquid phases, whereas equilibrium is assumed between the two liquid phases. The development of the model was strongly connected with a systematic experimental investigation study of t...

In this paper, we design a self-stabilizing phase synchronizer for distributed systems. The synchronizer enables a node transfer from one phase to the next one, subject to the condition that at most two consecutive phases can appear among all nodes. It does not rely on any system parameter like the number of nodes, and is thus fit for the system with dynamically changing number of nodes. Each n...

The load transfer mechanisms of cable bolts differ from those for normal rebar bolts. The cable bolts used in mines are basically steel strands with different constructions depending on the number of wires or elements and the way they are laid. Tendon bolts (rebar and cable) are normally evaluated for their strength and load transfer properties. The tendon strength can be evaluated by the tensi...

Kinetic study of epoxidation of unsaturated ketone of mesityl oxide was studied by usingHydrogen peroxide in the presence of dodecyltrimethyl ammonium bromide (DTAB) as aninverse phase transfer catalyst. The reaction was carried out in the two-phase media of waterheptanewith 1:1 ratio in 25 °C. It was found that the order of reaction for mesityl oxide forketone concentration in the range of 0.0...

Z.-X. Gong,1,2,* M. F. Maghrebi,1,2 A. Hu,1,3 M. Foss-Feig,1,2 P. Richerme,1,4 C. Monroe,1,2 and A. V. Gorshkov1,2 1Joint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA 2Joint Center for Quantum Information and Computer Science, NIST/University of Maryland, College Park, Maryland 20742, USA 3Department of Physics, American University, Washington, DC 20016, USA...

the purpose of this case report was to evaluate the effectiveness of training of transfer techniques to a caregiver of a person who had suffered a stroke in decreasing musculoskeletal pain, depression and anxiety. this study adopted a single subject research design to evaluate the effectiveness of transfer-techniques training on musculoskeletal pain, depression, and anxiety in a 25-year-old fem...