Dust explosions threaten the solids process industry. Parameters influencing dust include particle size, chemical composition, and polydispersity; however, morphology is often overlooked. Studies show impacts cloud minimum ignition energy (MIE) via heat transfer because higher specific surface results in lower conductive resistance. However, not only factor impacting MIE; effect of on dynamics ...

When a drop impacts a surface, a dimple can be formed due to the increased air pressure beneath the drop before it wets the surface. We employ a high-speed color interferometry technique to measure the evolution of the air layer profiles under millimeter-sized drops impacting hydrophobic micropatterned surfaces for impact velocities of typically 0.4 m s(-1). We account for the impact phenomena ...

In many choices they make—for example, choosing between a movie and a play or deciding whether to attend a sports game shortly before a birthday party— consumers are guided by how they expect an event will make them feel. They may predict their feelings by forecasting (imagining their feelings when the impacting event occurs, then considering how those feelings might change over time) or by bac...

OBJECTIVE To analyze the treatment effect of surgical dislocation of the hip with sequestrum clearance and impacting bone graft in grade IIIA-IIIB aseptic necrosis of femoral head (ANFH) patients. METHODS From June 2012 to December 2014, 6 patients (total 8 hips) with grade IIIA-IIIB ANFH were retrospectively followed. All the patients were operated with surgical dislocation of the hip with s...

We explore the importance of magnetic-field-oriented thermal conduction in the interaction of supernova remnant (SNR) shocks with radiative gas clouds and in determining the mass and energy exchange between the clouds and the hot surrounding medium. We perform 2.5D MHD simulations of a shock impacting on an isolated gas cloud, including anisotropic thermal conduction and radiative cooling; we c...

The ability to enhance or limit heat transfer between a surface and impacting drops is important in applications ranging from industrial spray cooling to the thermal regulation of animals in cold rain. When these surfaces are micro/nanotextured and hydrophobic, or superhydrophobic, an impacting drop can spread and recoil over trapped air pockets so quickly that it can completely bounce off the ...

Superhydrophobic surfaces decorated with macrostructures have presented remarkable potential in diverse engineering fields, such as aircraft anti-icing. Understanding the effects of structure shape and size on droplet dynamics is crucial to design application surfaces. Herein, we investigate maximum axial spreading for droplets impacting ridged superhydrophobic varied ridge shapes sizes. We pro...

Carrier behavior in halide perovskite is a critical factor impacting on the properties of material, and finally determines performance photovoltaic luminescent devices. It necessary to clarify mechanism carrier relaxation migration at extremely microscopic time scale. Time-resolved spectroscopy provides powerful means for detection ultrafast processes, which has been an indispensable technique ...

Access to healthy food is a critical factor impacting childhood obesity. Brighter Bites is a schoolbased program that addresses the issue of fresh food access among low-income families living in food deserts using a food co-op model. The aim of this study is to evaluate initial parent participant reactions to the ongoing Brighter Bites program using Photovoice. A predominately Hispanic, economi...

Droplets impacting on a superheated surface can either exhibit a contact boiling regime, in which they make direct contact with the surface and boil violently, or a film boiling regime, in which they remain separated from the surface by their own vapor. The transition from the contact to the film boiling regime depends not only on the temperature of the surface and the kinetic energy of the dro...