Formulas are derived describing the phenomenon of total re6ection of neutrons by a ferrornagnet in dependence on the state of magnetization. It is shown how experiments of this kind can give information concerning the magnetic interaction between neutrons and atomic magnetic moments. A method to obtain well-polarized neutron beams with an intensity loss of only 50 percent of the primary beam is...

Electrowetting on dielectric and dielectrophoretic electromechanical mechanisms dominate microfluidic actuation in the low- and high-frequency limits, respectively. The frequency-dependent relationship between these two mechanisms has been clarified by the Maxwell stress tensor and a simple RC circuit model. In this paper, we report extensive height-of-rise measurements obtained with vertical, ...

Diffusion anoxia. By Bernard Raymond Fink. Anesthesiology 1955; 16:511-14. In 1955, Dr. Bernard Raymond Fink published his findings that described the mechanism by which hypoxemia occurred when nitrous oxide-oxygen anesthesia was discontinued and room air breathing commenced. Using an ear oximeter and brachial artery blood gases, he measured oxygen saturation in eight healthy patients who had r...

A fundamental 2-D model was developed to predict the heat and mass transfer that occur during the frying and cooling process of tortilla chips. Semi-empirical correlations were included to account for structural changes, such as shrinkage and expansion due to puffing. All water present in the tortilla chip was considered bound and led to shrinkage when removed. The parameters that were studied ...

This paper presents a predictive torque and flux control algorithm for the synchronous reluctance machine. The algorithm performs a voltage space phasor pre-selection, followed by the computation of the switching instants for the optimum switching space phasors, with the advantages of inherently constant switching frequency and time equidistant implementation on a DSP based system. The criteria...

We studied 152 COPD patients with a daytime PaO2 greater than or equal to 60 mm Hg using formal polysomnography (EEG, airflow, respiratory muscle movement, ear oximeter) to detect the presence of nocturnal, nonapneic, oxyhemoglobin desaturation. Nine subjects were disqualified by the unexpected discovery of sleep apnea, as were another eight because they could not sleep in the laboratory settin...

A three-dimensional two-phase lattice Boltzmann model (LBM) is implemented and validated for qualitative study of the fundamental phenomena of liquid water transport in the porous layer of a proton exchange membrane fuel cell (PEMFC). In the present study, the three-dimensional microstructures of a porous layer are numerically reconstructed by a random generation method. The LBM simulations foc...

Scanning tunneling microscopy was applied to investigate the topographical and structural alterations at small spatial temporal scales of a model 304 austenitic stainless steel surface resulting from ultra-low exposures gaseous oxygen room temperature. The 2D nucleation growth mechanisms were observed until saturation by fully covering nanogranular Cr(III)-enriched oxide film. Local supply meta...

We report a peculiar magnetization reversal observed in magnetron-sputtered Co, Fe, and Ni films. found that some recoil (minor) curves lie entirely way outside the major loop, phenomenon referred to here as recoil-curve overshoot. The greatly enhanced curve's remanence coercivity result an up 2.5-fold increase of loop's area. model pairs exchange-coupled grains with misaligned anisotropy axes ...