Permit-required confined spaces (permit spaces).

"OSHA 3138."

Atoms for peace : a separate opinion /

"January 25, 1956."

Atoms-for-peace in the Philippines : official report of the Philippine delegation to the International Conference on the peaceful uses of atomic energy /

On t.p.: Geneva, 1955.

Data index for energy transfer collisions of atoms and molecules, 1970-1979 /

Mode of access: Internet.

Proceedings of the Conference on Atmospheric Contamination in Confined Spaces, 30 March-1 April 1965.

Sponsored by the Aerospace Medical Research Laboratories.

An address to the people of the United Kingdoms of Great Britain and Ireland : containing an account of the sufferings of Thomas O'Neill, a British officer, while confined in the prison of the Conciergerie at Paris, for two years and ten months, and his escape from thence, during his second imprisonment as a prisoner at war /

Mode of access: Internet.

Hydrogen in chemical atoms;

Accompanied by "Supplement [no.1]- " (V.) Published: Pittsburgh, Markowitz and Haas, 1951-

The confessions of Nat Turner, the leader of the late insurrection in Southampton, Va., as fully and voluntarily made to Thomas R. Gray, in the prison where he was confined, and acknowledged by him to be such, when read before the Court of Southampton : with the certificate, under seal of the Court convened at Jerusalem, Nov. 5, 1831, for his trial.

"Also, an authentic account of the whole insurrection, with lists of the Whites who were murdered, and of the Negroes brought before the Court of Southampton, and there sentenced, &c."

Chemical kinetics of reactions of the sulphur oxides, S-atoms, SH and H₂S; dissociation, photolysis and reactions with H, O, O₂, O₃ and the nitrogen oxides.

"Based on the files of the Chemical Kinetics Information Center and an examination of Chemical abstracts 1962-1970."

A pilgrimage to the shrines of patriotism, being the report of the commission to dedicate the monument erected by the state of New York, in Andersonville, Georgia, to commemorate the heroism, sacrifices and patriotism of more than nine thousand of her sons who were confined in that prison ... with an account of services of the New York resident surviving Andersonville veterans held thereat and also enroute at Richmond and Danville, Va., Salisbury N.C., and Lookout mountain, Tenn., April 26-30, 1914.

"List of New York state soldiers buried in Andersonville national cemetary": p. 171-241.

Entanglement of two atoms

We discuss the problem of creation of entangled states in a system of two two-level atoms which are separated by an arbitrary distance r(12) and interact with each other via the dipole-dipole interaction and both are driven by a laser field. The entangled antisymmetric state of the system is included throughout, even for small inter-atomic separations. Different mechanisms leading to effective transfer of population to the antisymmetric state are identified. The steady-state values of concurrence which is a measure of entanglement are calculated showing that perfect entanglement can be reached in case of two non-identical atoms.

A numerical approach to modeling the catalytic voltammetry of surface-confined redox enzymes

A finite difference method for simulating voltammograms of electrochemically driven enzyme catalysis is presented. The method enables any enzyme mechanism to be simulated. The finite difference equations can be represented as a matrix equation containing a nonlinear sparse matrix. This equation has been solved using the software package Mathematica. Our focus is on the use of cyclic voltammetry since this is the most commonly employed electrochemical method used to elucidate mechanisms. The use of cyclic voltammetry to obtain data from systems obeying Michaelis-Menten kinetics is discussed, and we then verify our observations on the Michaelis-Menten system using the finite difference simulation. Finally, we demonstrate how the method can be used to obtain mechanistic information on a real redox enzyme system, the complex bacterial molybdoenzyme xanthine dehydrogenase.

Entangling two atoms via spontaneous emission

We discuss the creation of entanglement between two two-level atoms in the dissipative process of spontaneous emission. It is shown that spontaneous emission can lead to a transient entanglement between the atoms even if the atoms were prepared initially in an unentangled state. The amount of entanglement created in the system is quantified by using two different measures: concurrence and negativity. We find analytical formulae for the evolution of concurrence and negativity in the system. We also find the analytical relation between the two measures of entanglement. The system consists of two two-level atoms which are separated by an arbitrary distance r(12) and interact with each other via the dipole-dipole interaction, and the antisymmetric state of the system is included throughout, even for small interatomic separations, in contrast to the small-sample model. It is shown that for sufficiently large values of the dipole-dipole interaction initially the entanglement exhibits oscillatory behaviour with considerable entanglement in the peaks. For longer times the amount of entanglement is directly related to the population of the slowly decaying antisymmetric state.

Organic-inorganic poly(methyl methacrylate) hybrids with confined polyhedral oligosilsesquioxane macromonomers

We herein report the synthesis of organic-inorganic hybrid poly(methyl methacrylate) containing 1 polyhedral oligosilsesquioxanes. Octakis(3-hydroxypropyldimethylsiloxy)octasilsesquioxane (OHPS) was synthesized from octakis(hydridodimethylsiloxy)octasilsesquioxane [Si8O12(OSiMe2H)(8), Q(8)M(8)(H)] following literature procedures. Octakis(tnethacryloxypropyldimethylsiloxy) octasilsesquioxane (OMPS) was synthesized via the reaction of methacryloyl chloride or methacrylic acid anhydride with OHPS, with the latter giving improved purity. Polymerization of OMPS with methyl inethacrylate using a dibenzoylperoxide initiator gave a highly cross-linked polymer. Characterization of the polymer was performed using Fourier transform IR spectroscopy, Si-29 NMR, differential scanning calorimetry, thermogravimetric analysis, atomic force microscopy, and transmission electron microscopy with energy-dispersive X-ray analysis. The polymer was found to be largely homogeneous. Increasing the OMPS concentration in the polymer gave increased decomposition and glass transition temperatures.

Projected Gross-Pitaevskii equation for harmonically confined Bose gases at finite temperature

We extend the projected Gross-Pitaevskii equation formalism of Davis [Phys. Rev. Lett. 87, 160402 (2001)] to the experimentally relevant case of thermal Bose gases in harmonic potentials and outline a robust and accurate numerical scheme that can efficiently simulate this system. We apply this method to investigate the equilibrium properties of the harmonically trapped three-dimensional projected Gross-Pitaevskii equation at finite temperature and consider the dependence of condensate fraction, position, and momentum distributions and density fluctuations on temperature. We apply the scheme to simulate an evaporative cooling process in which the preferential removal of high-energy particles leads to the growth of a Bose-Einstein condensate. We show that a condensate fraction can be inferred during the dynamics even in this nonequilibrium situation.