Review of model sensor studies on Pd/SnO2(110) surfaces

Studies performed at the National Institute of Standards and Technology on the model gas sensor system, Pd/SnO2(110), are reviewed. Adsorption and interfacial effects play a primary role in the gas sensing process, as they do in catalysis. For this reason, researchers have used a variety of surface sensitive techniques in the research, including x ray and ultraviolet photoelectron spectroscopies (XPS and UPS), low energy electron diffraction (LEED), and ion scattering spectroscopy (ISS). By combining these complementary techniques with in situ gas response (conductance) measurements, researchers were able to correlate directly sensor activity with the composition and structure of the Pd/SnO2 interface. Although the intent of this work is to develop an understanding of gas sensing mechanisms, its relevance to Pt/SnO2 catalytic systems is obvious

An Audience with the King

This Creative Thesis attempts to contemplate one aspect of theological inquiry and puzzlement: the enigma of living between an all-powerful, omniscient Divine—the Cosmic King Who is capable of forming a sun or designing a rose—and the intimate Father-God Who holds our tears in His hand. It is an exploration of the indefinable relationship between fallible human beings and an omniscient and all-powerful, yet intimate God. Its variety of texts, though differing in form, all consider what it means to live in the tension of that paradox. The purpose of this work is not to offer answers to any of the questions raised by this inquiry nor to concoct an impossibly definitive response, but rather to open the door to spiritual inquiry in the hope of growth toward new epiphanies of thought and experience. To accomplish this, this text employs a multifaceted, multi-genre approach designed to contemplate this paradox from a variety of creative angles including essays, poetry, short stories, and trip reports. The document ends with a critical reflection which outlines the literary provenance of these writings and places them in the context of the classical and modern works of devotional literature on whose shoulders they stand

A synthesis of sand seas throughout the world

There are no author-identified significant results in this report

A Ball Lightning Model as a Possible Explanation of Recently Reported Cavity Lights

The salient features of cavity lights, in particular, mobile luminous objects (MLO's), as have been experimentally observed in superconducting accelerator cavities, are summarized. A model based upon standard electromagnetic interactions between a small particle and the 1.5 GHz cavity excitation field is described. This model can explain some features of these data, in particular, the existence of particle orbits without wall contact. While this result is an important success for the model, it is detailed why the model as it stands is incomplete. It is argued that no avenues for a suitable extension of the model through established physics appear evident, which motivates an investigation of a model based upon a more exotic object, ball lightning. As discussed, further motivation derives from the fact that there are significant similarities in many of the qualitative features of ball lightning and MLO's, even though they appear in quite different circumstances and differ in scale by orders of magnitude. The ball lightning model, which incorporates electromagnetic charges and currents, is based on a symmetrized set of Maxwell's equations in which the electromagnetic sources and fields are characterized by a process called dyality rotation. It is shown that a consistent mathematical description of dyality rotation as a physical process can be achieved by adding suitable (phenomenological) current terms to supplement the usual current terms in the symmetrized Maxwell's equations. These currents, which enable the conservation of electric and magnetic charge, are called vacuum currents. It is shown that the proposed ball lightning model offers a good qualitative explanation of the perplexing aspects of the MLO data. Avenues for further study are indicated

Emmanuel Brandl, Cécile Prévost-Thomas et Hyacinthe Ravet (ed.), 25 ans de sociologie de la musique en France, tome 2.

Notons d’emblée que la lecture de ce deuxième tome des 25 ans de la sociologie de la musique en France rend manifeste un fait notable concernant la sociologie de la musique : comme toute discipline, elle s’est construite et continue de se construire autour de figures tutélaires, auxquelles la plupart des auteurs de l’ouvrage se réfèrent. Il s’agit d’Howard S. Becker, Pierre Bourdieu et Pierre-Michel Menger, dont les réflexions ne cessent d’alimenter les différents articles de l’ouvrage. Becke..