Environmental Profiles of Stirling-Cooled and Cascade-Cooled Ultra-Low Temperature Freezers

Ultra Low Pressure-drop Helium-cooled Porous-tungsten Pfc

A new class of helium-cooled high heat-flux plasma facing heat exchanger (HX) concept is presented. These unique “Foam-In-Tube” HX concepts are composed of a thin tungsten shell integrally bonded to an open-cell tungsten foam core. High heat flux tests show maximum heat loads of 22.4 MW/m using 4 MPa helium at a flow rate of 27 g/s. Based on these impressive performance results, a unique and sc...

High Temperature Gas Cooled Reactors

Comparison of using cooled and regular-temperature nasogastric tubes on the success of nasogastric intubation

Background: Successful nasogastric intubation is defined as “correct placement of the tube with minimum number of attempts” which is an important issue in nasogastric intubation. Due to controversies in the use of cold tubes in nasogastric tube insertion, need for research in this area seems necessary. Aim: To compare the effect of using cold versus regular-temperature nasogastric tubes on succ...

Angular Temperature Variations in a Wall-Cooled

The signijkance of the statistical character of wall-cooled packed-bed reactors was studied by measuring angular temperature variations, which result @om the random nature of the packing. These are neglected in present-day mathematical models designed to describe the reactor behavior. The amplitude of these variations was determined experimentally as a function of the mass flux and the position...

Low-Energy Ions from Laser-Cooled Atoms

G. Shayeganrad, A. Fioretti, I. Guerri, F. Tantussi, D. Ciampini, M. Allegrini, M. Viteau, and F. Fuso Dipartimento di Fisica Enrico Fermi, Università di Pisa, 56127 Pisa, Italy Istituto Nazionale di Ottica, INO-CNR, 56124 Pisa, Italy Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, CNISM, Sezione di Pisa, 56127 Pisa, Italy Orsay Physics, TESCAN Orsay, 13710 Fuveau, ...