A concept for the casting of metallic fuels pins containing low vapor pressure materials is presented and discussed. The important physics of this concept include the mass transport of americium from the melt, the induction heating and stirring of the melt, plus the casting of long slender fuel rods. This paper discusses and presents preliminary modeling results for the casting of long, slender...

Mass transfer and catalyst recovery are two crucial issues in solid base catalysis, while the cumbersome operation steps associated time energy penalties still inevitable for conventional catalysts. Achieving technical upgrades through design is desirable but challenging because of difficulty satisfying diverse demands different steps. In this work, a magnetically responsive with rod-like nanos...

UNLABELLED This article describes an in vitro fatigue and/or wear simulator enabling controlled application of force, speed, type of liquids and duration, to mimic challenges representative for the human oral environment. The device consists of a container in which a cylinder with specimen holder is placed which drives another cylinder (rod). The rod rotates in an opposite direction to the rota...

in iran, onion plants are currently broadcast over the majority of onion fields and weeding and harvesting are done manually by seasonal workers. at harvest time, 40 worker-days are required to onion dig just one hectare. this cost could be saved if the operation could be carried out by machine. rear-mounted diggers can only be implemented if 40 cm spacing between rows is allowed for each tract...

We analyze an example system of four coupled phase oscillators and discover a novel phenomenon that we call a “heteroclinic ratchet”; a particular type of robust heteroclinic network on a torus where connections wind in only one direction. The coupling structure has only one symmetry, but there are a number of invariant subspaces and degenerate bifurcations forced by the coupling structure, and...

We investigate the enhancement of both mixing and heat transfer in a two-rod mixer for highly-viscous non-Newtonian fluids. The mixer is composed of two vertical, circular rods in a cylindrical tank. Chaotic flows are obtained by imposing the temporal modulations of the rotational velocities of the walls. We study the effects of different stirring protocols, which lead to non-chaotic and chaoti...

The first part of the project is mainly about changing of slag compositions and see it affect on the inclusions in the ladle furnace. The second part of the project is to study the influence of stirring (EMGAS) on the large inclusions in the steel by changing stirring conditions. The project has done at Uddeholm AB, Hagfors. First, the scrap is melted in ARC furnace then moved to the ladle de-s...

Hidenori Yamada, DDS, PhD (1), Ayako Okada, DDS, PhD (1), Takatoshi Murata, DDS, PhD (1), Kimiyuki Uetani, DDS (2), Mami Kotoh, DDS, PhD (2), Naoyuki Nishitsuji, DDS (2), Yoshihide Yabuki, DDS (2), Yoichi Fukuzawa, DDS, PhD (2), Hirokazu Yoshino, DDS (2), Koshi Kubo, DDS (2), Mitsuhiro Abe, DDS, PhD (2), Takatoshi One, DDS, PhD (2), Hiroaki Nagai, DDS, PhD (2), Masataka Yajima, DDS (2), Yoshiak...

Large-scale chaotic stirring stretches tracer contours into filaments containing fine spatial scales until smallscale diffusive processes dissipate tracer variance. Quantification of tracer transport in such circumstances is possible through the use of Nakamura’s ‘‘effective diffusivity’’ diagnostics, which make clear the controlling role of stirring, rather than small-scale dissipation, in lar...

1. Filters comprising multiple layers of rabbit renal tubular basement membrane were constructed with conventional pressure filtration chambers. The effects of concentration-polarization on the behaviour of these filters was assessed by studying the filtration of proteins and of serum under turbulent (stirred) and unstirred conditions. 2. With stirring bovine serum albumin was effectively rejec...