The Mg/2+/-Fe/2+/ order-disorder and the thermodynamics of the orthopyroxene, /Mg,Fe/2Si2O6 crystalline solution. Part 1 - A Fe 57 Moessbauer resonance study of the Mg/2+/-Fe/2+/ distribution in orthopyroxenes at 500, 600, 700 and 800 C

Iron 57 Mossbauer resonance determination of distribution isotherms for bibalent Mg and Fe ions between M1 and M2 sites in orthopyroxene

A first experimental test of de Broglie-Bohm theory against standard quantum mechanics

De Broglie - Bohm (dBB) theory is a deterministic theory, built for reproducing almost all Quantum Mechanics (QM) predictions, where position plays the role of a hidden variable. It was recently shown that different coincidence patterns are predicted by QM and dBB when a double slit experiment is realised under specific conditions and, therefore, an experiment can test the two theories. In this letter we present the first realisation of such a double slit experiment by using correlated photons produced in type I Parametric Down Conversion. Our results confirm QM contradicting dBB predictions

Resonance enhancement of x-rays and fluorescence yield from marker layers in thin films

Resonance enhancement of x rays in a thin film and fluorescence emission from embedded marker layers within the film have been studied. With embedded marker layers of Ti, Fe, and W at different depths in a thin Si film on a Au-coated Si substrate, it has been shown that the position of a marker layer throughout the depth of the film can be unambiguously determined with a precision better than 0.5 nm. In this example, field-intensity enhancement upto 16 times have been observed. Field enhancement gives rise to enhanced sensitivity. The usefulness of this resonance-enhanced x-ray fluorescence spectrometry in the study of diffusion with marker layers in thin films including polymers and nanocomposites has been elucidated

Duplex process for production of low carbon ferrochrome

The Duplex Process for the production of low carbon ferro chrome has been highlighted and its advantage over Perrin process has been brought cut. The production of Low Carbon Ferro-chrome in Perrin process demands rigid operating conditions compared to the Duplex process. The life of the refractories in the Duplex process are also longer compared to Perrin process and the specific raw material consumption and energy are comparable. The demand for Low catbon Ferrochrome is reducing due to adoption of V. 0. D. and A. 0. D. process in India by the major stainless steel manufacturers. However, the import-ance of Low Carbon Ferrochrome will continue for a few years till the new process of stainless steel manufacture are adopted by all

Geometric phase distributions for open quantum systems

In an open system, the geometric phase should be described by a distribution. We show that a geometric phase distribution for open system dynamics is in general ambiguous, but the imposition of reasonable physical constraints on the environment and its coupling with the system yields a unique geometric phase distribution that applies even for mixed states, non-unitary dynamics, and non-cyclic evolutions.Comment: Some minor revisions, references update

Refractories for reheating and heat treatment furnaces

The group of furnaces used for reheating and heat-treatment covers a wide field in the processing of both ferrous and non-ferrous metals. A "re-heating" furnace is utilised to raise the temperature of the metal to prepare it for hot working (shaping), while the "heat-treatment" furnaces are used for stress relieving and for changing the physical properties of the metal after the product has attained its final shape

Rational design of sulfonamide inhibitor specific for human carbonic anhydrase I isozyme

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