ALKALI METAL COMPOUNDS - Storming Media

Generic Rapid Analysis of Current and Prospective Nerve Agents and Their Degradation Products

01 OCT 2005

9 pages

Authors: Ilya Elashvili; Mary B. Potter; Gregory Pellar; EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND MD

The full text of this report is available for sale.

We have developed a rapid and highly reliable analytical methodology for current and prospective nerve agents and their degradation products. The approach is to augment existing analytical methods with a specific enzymatic transformation step. It utilizes a novel bacterial phosphonate ester hydrolase enzyme (PEH), which degrades the agents alkali hydrolysis phospho-products (h-agents) to alkylphosphonic acids. Combined with current analytical protocol, which involves testing both the neat and alkali treated sample, ...

Air Deployable Caustic Mixing System

29 MAR 2004

169 pages

Authors: John L. McKelvey; John F. Shanahan; CASE ENGINEERING MULBERRY FL

Report developed under SBIR Contract for Topic 03-018. The modular skid mounted system designed in the Phase I effort is an air-transportable batch chemical blending and storage system. It is capable of preparing a mixed hydroxide (MOH) solution composed of potassium hydroxide (KOH), sodium hydroxide (NaOH) and lithium hydroxide (LiOH) using dry alkali hydroxide raw material and de-ionized water at a rate of 3678 lb/hr (1668 kg/hr). The system is ...

Topical Lime Treatment for Containment of Source Zone Energetics Contamination

SEP 2003

101 pages

Authors: Michael C. Brooks; Jeffrey L. Davis; Steven L. Larson; Deborah R. Felt; Catherine C. Nestler; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB

Energetic compounds, such as 2,4,6-trinitrotoluene (TNT) and hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), and their degradation products can act as a source of contamination for soil on Department of Defense testing and training ranges. Base hydrolysis degrades nitroaromatics and nitramines, and the potential effectiveness of lime to induce this reaction has been demonstrated at the laboratory scale. The objective of this research was to further examine both basic and applied aspects of alkaline application ...

Enzymatic Analysis of G- and V-Agents and Their Degradation Products

01-Jul-2003

Authors: Ilya Elashvili; EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND MD

The full text of this report is not available and therefore is not for sale. This information is provided for reference purposes only.

We are presenting a rapid and highly reliable analytical methodology for nerve agents and their degradation products. The approach is to augment existing analytical methods with the specificity of the enzymatic degradation of the agents and their phosphonate ester products. The nerve agents can be hydrolyzed to their respective methylphosphonate alkyl ester (h-agent) products by alkali treatment or by specific hydrolytic enzymes, such as organophosphorus hydrolase (OPH) and organophosphorus acid ...

Destruction of Energetic Materials in Supercritical Water

25 JUN 2002

217 pages

Authors: S. J. Buelow; D. Allen; G. K. Anderson; F. L. Archuleta; J. H. Atencio; LOS ALAMOS NATIONAL LAB NM

This effort was a survey of the compatibility of a broad series of representative energetic materials (EM) commonly used in propellants, munitions and explosives with a proposed process of controlled decomposition in water near or above the critical temperature (approximately 373 CC), Central issues, in order of consideration, are safety, environmental compatibility of decomposition products, destruction efficiency, extrapolation to compounded formulations of EM, and engineering considerations for scale-up to full-scale ...

Studies on the Microwave Optics of Ionic Molecular Solids

15 MAR 2002

19 pages

Authors: John R. Hardy; NEBRASKA UNIV LINCOLN

Work carried out under this grant is summarized. In particular, the prediction of a novel ferroelectric material NaCaF3 is described and its predicted properties summarized. First principles calculations on a wide range of ionic molecular solids are summarized. These range from studies on halide perovoskites to work on alkaline earth silicates. In most cases very reasonable accord with experiment is achieved. One notable exception is the class of alkali cyanides ...

International Conference on Solid State Crystals 2000: Growth, Characterization, and Applications of Single Crystals Held in Zakopane, Poland on 9-12 October 2000

24 OCT 2001

426 pages

Authors: Antoni Rogalski; Pawet Madejczyk; Krzysztof Adamiec; MILITARY UNIV OF TECHNOLOGY KALISKIEGO(POLAND) INST OF APPLIED PHYSICS

Partial Contents: Scope of ZnO growth; Influence of mechanical stress on the growth of crystals; Crystal growth of new functional materials for electro-optical applications; Possibilities and limitations of multioxide crystals growth; Single-domain HTC superconducting materials synthesis: BaZrO3 substrates as a tool for optimized systems; Very high quality crystals of wide- gap II-V semiconductors: What for?; Annealing of GaSb single crystals in ionized hydrogen atmosphere; Growth and structure of strontium-doped LaGaO3; ...

Stokes and Anti Stokes Luminescence in LiTaO3:Ho

2001

4 pages

Authors: W. Ryba-Romanowski; S. Golab; I. Sokolska; G. Dominiak-Dzik; P. Solarz; POLISH ACADEMY OF SCIENCES WROCLAW INSTITUTE OF LOW TEMPERATURE AND STRUCTURE RESEARCH

The paper deals with the excitation and decay of excited states of holmium in LiTaO3 single crystals. Particular attention is paid to processes governing a population build up on the (sup 5 S sub 2) and (sup 5 I sub 7) metastable states whose quantum efficiencies are sufficiently high to be considered as initial levels for a laser transition. We observed for the first time, to our knowledge, an efficient ...

Distillate Fuel Processing for Marine Fuel Cell Applications

17 JAN 2000

8 pages

Authors: G. Steinfield; R. Sanderson; H. Ghezel-Ayagh; S. Abens; Mark C. Cervi; FUELCELL ENERGY INC DANBURY CT

FuelCell Energy, Inc. (FCE) is developing a 625 kW fuel cell power plant for marine applications based on its Direct Carbonate Fuel Cell (DFC(Trademark)) technology. The power plant is designed for operation on Mil-F-16884J Naval distillate fuel designated as NATO F-76. This fuel is characterized as a 385 deg C (max) end boiling point diesel fuel with up to 1% sulfur by weight. The development is part of the U.S. ...

Basic Scaling Studies of Electric Thrusters

12 MAR 1999

7 pages

Authors: Manual Martinez-Sanchez; MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF AERONAUTICS AND ASTRONAUTICS

The main goal of the work under this Grant was the clarification of the scaling properties of Hall thrusters, with a view to both, miniaturization, and expansion to high power. This goal was pursued through two complementary efforts, one addressing the scaling issues and technological problems associated with miniaturization of classically arranged Hall thrusters, and the other continuing the fundamental physical modeling work on Hall thrusters, which underlies all scaling ...

Crystal Chemistry of Ceramic/Metal Systems

16 JAN 97

9 pages

Authors: Robert R. Reeber; NORTH CAROLINA UNIV AT CHAPEL HILL DEPT OF GEOLOGY

Robust models for predicting high temperature/pressure thermal expansion for a range of solids have been developed. The inter-relationships between several thermophysical properties including thermal expansion, specific heat, elastic properties, and self-diffusion of materials has been investigated. The role of defects on thermal expansion at high temperature and pressure has also been explored. During the course of the project several models for thermal expansion were developed extending earlier work of Reeber. ...

Experimental Study of Unusual IR and Far IR Vibrational Energy Transfer Processes in Solids

31 JAN 96

60 pages

Authors: A. J. Sievers; CORNELL UNIV ITHACA NY LAB OF ATOMIC AND SOLID STATE PHYSICS

Seven different experimental studies are described. (a) Hole burning in chalcogenide glasses: The dephasing time is a function of the average coordination number of the glass and is independent of the chemical composition. (b) Vibrational relaxation of diatomic molecules in alkali halide crystals: The matrix isolated CN- molecule obeys an energy gap law while the hydride molecule does not. (c) Vibrational relaxation of diatomic molecules in glass: Our IR pump ...

Economic Analysis of a Zero Discharge Industrial Wastewater Treatment Process

DEC 95

77 pages

Authors: LITTLE (ARTHUR D) INC CAMBRIDGE MA

This document reports the results of an economic analysis of advanced and emerging industrial wastewater treatment plant (IWTP) technologies. Conventional IWTPs have been capable of handling a wide range of flow rates and concentration of influent waste streams from metal plating and finishing shops. New regulations and the increase in disposal costs for solid wastes have required the Navy to focus on improving the metal removal efficiency and waste generation ...

Electrochemical and Spectroscopic Studies of Selected Inorganic and Organic Systems in Molten Halides

NOV 95

39 pages

Authors: Gleb Mamantov; Richard Pagni; TENNESSEE UNIV KNOXVILLE DEPT OF CHEMISTRY

Electrochemical, spectroscopic and spectroelectrochemical studies of tantalum, niobium, tungsten and rhenium were conducted in molten alkali haloaluminate melts. The melts were in most cases treated with COl4 to remove o) dde. Evidence was found for the formation of metallic tantalum, niobium and tungsten during controlled potential electrolysis in these melts. No conclusive evidence was found for rhenium plating. Reaction sequences, based on experimental data, were proposed for the four metals. ...

Molecular Dynamics Study of Interfacial Electric Fields

54 pages

Authors: James N. Glosli; Michael R. Philpott; LAWRENCE LIVERMORE NATIONAL LAB CA

Electric fields and potentials of an equilibrated assembly of ions and water molecules adjacent to a charged metal surface are calculated as a function of perpendicular distance z from the surface from data derived from molecular dynamics trajectories. The spatial distributions of atoms or molecules along direction z are found by ensemble averaging of trajectories followed by averaging with a localized function with a well defined length scale. Two methods ...

Pulse Mitigation and Heat Transfer Enhancement Techniques. Volume 3. Liquid Sodium Heat Transfer Facility and Transient Response of Sodium Heat Pipe to Pulse Forward and Reverse Heat Load

AUG 92

97 pages

Authors: L. C. Chow; O. J. Hahn; H. X. Nguyen; KENTUCKY UNIV LEXINGTON DEPT OF MECHANICAL ENGINEERING

This report presents the description of a liquid sodium heat transfer facility (sodium loop) constructed to support the study of transient response of heat pipes. The facility, consisting of the loop itself, a safety system, and a data acquisition system, can be safely operated over a wide range of temperature and sodium flow rate. The transient response of heat pipe to pulse heat load at the condenser section was experimentally ...

Comparison of Alkali Ion Emitters

DEC 91

92 pages

Authors: Dean A. Gant; NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Lithium, Potassium, and Cesium ion sources have been studied using devices based on thermal emission from a Beta Eucryptite structure as possible ion sources for use in satellite charge control. The experiments evaluated the power requirements of the different ion emitters to produce approximately 10 (microamps) of current and tested the effects of using an Osmium Ruthenium coating to increase the work function of the emitter surface. Lifetime tests of ...

Electronic Interactions of Directed Photon Beams with Surfaces

25 SEP 91

17 pages

Authors: Alan V. Barnes; Marcus Mendenhall; Norman H. Tolk; VANDERBILT UNIV NASHVILLE TN CENTER FOR ATOMIC AND MOLECULAR PHYSICS AT SURFA CES

The object of this research program is to investigate the fundamental dynamics of energy-surface interactions, with emphasis on the ways in which the energy deposited by incident uv photons and electrons lead to surface bond- breaking phenomena, to fluorescence, and to modification of surfaces and near- surface layers of bulk materials. Optical radiation may arise from electronic excitations in the near surface bulk or from excited atoms and molecules emitted ...

The Thermal Deprotection Process in an E-Beam Exposed, Phenolic-Based Polymer

18 SEP 91

Authors: Treva Long; S. K. Obendorf; Ferdinand Rodriquez; CORNELL UNIV ITHACA NY SCHOOL OF CHEMICAL ENGINEERING

An alkali soluble latent image can be generated in pure PBOCST (poly(tert-butoxycarbonoxystyrene)) by e-beam exposure followed by a post- exposure bake (PEB) at relatively high temperatures (140 - 150 C). Pattern wet development operates on the same basis as a PBOCST/acid generator two component system. Deprotection (heating), accelerated by the exposure, yields alkali soluble areas while unexposed areas remain insoluble. Sensitivities of 5-10 micro/cu cm and contrasts of 6-10 have ...

Debaryomyces hansenii: A Model System for Marine Molecular Biology

30 MAY 91

4 pages

Authors: Govind S. Nadathur; CALIFORNIA UNIV SANTA BARBARA

In an attempt to construct plasmids with the capability of autonomous replication we have isolated two ARS from Debaryomyces utilizing S. cerevisiae strain SEY 2108 (Ura3) and its corresponding gene URA3 as a marker. Attempts are now being made to transform Ura3 Debaryomyces with this plasmid. Transformation attempted with techniques such as protoplasting, alkali cations and electroporation has not met with success. With the arrival of strain J-26 for Dr. ...

Isolation, Cloning and Expression of the Genes for Microbial Polyurethane Degradation

14 MAY 91

Authors: Robert Pryor; Usha Charyulu; Sandra Haddad; Ramesh K. Prakash; Gail L. Bowers-Irons; TECHNICAL RESEARCH ASSOCIATES INC SALT LAKE CITY UT

A small scale plasmid purification procedure, miniprep, has isolated plasmid DNA from TRA's fungal host. Plasmid pSV50 was isolated using a modification of the standard alkali lysis procedure found in Maniatis. pSV50 was chosen for its' ability to transform both E. coli and Neurospora crassa. E. coli will be used for maintaining the genomic library and Neurospora crassa will be used for screening the library. The pSV50 plasmid (cosmid) was ...

Change Exchange in Ion-Surface Scattering at Hyperthermal (10-100 eV) and keV Energies

09 APR 91

Authors: Barbara H. Cooper; CORNELL UNIV ITHACA NY LAB OF ATOMIC AND SOLID STATE PHYSICS

Investigated are the interactions of hyperthermal (10-100 eV) and keV ions with clean and adsorbate-covered metal surfaces, with particular emphasis on ion-surface charge exchange processes. Nonadiabatic resonant charge transfer to hyperthermal energy K+ scattered from clean and adsorbate-covered Cu(001) and Cu(110) were observed. Very small coverages of alkali adsorbates (< or= 0.05 ML) dramatically increased the charge transfer rate. Classical trajectory calculation was used to determine the scattered K+ velocities, ...

New Mechanism for the Desorption of Excited Atoms by Photon Bombardment of Alkali Halide Crystals

04 APR 91

17 pages

Authors: D. Liu; R. G. Albridge; A. V. Barnes; P. H. Bunton; C. S. Ewig; VANDERBILT UNIV NASHVILLE TN

We report measurements of photon-stimulated desorption of excited atoms from LiF and NaCl crystal surfaces. Based on these measurements, we propose a new model of photon-initiated, defect-mediated desorption involving exoergic surface reactions between alkali dimers and halogens. This model consists of two steps: (a) reactants are formed at the surface, directly or by the migration to the surface of holes and defects created in the near surface bulk, due to ...

Microstructure, Porosity and Mechanical Property Relationships of Calcium-Silicate-Hydrate

15 FEB 91

Authors: M. W. Grutzeck; S. Hoyle; S. Kwan; J. LaRosa; S. Bozich; PENNSYLVANIA STATE UNIV UNIVERSITY PARK MATERIALS RESEARCH LAB

The structure of calcium silicate hydrate (C-S-H) formed as a result of solution/sol mixing, and hydration of tricalcium silicate (C3S) under fixed pH conditions was studied. MAS NMR and related analytical techniques (x-ray diffraction, SEM/TEM, and TGA) were used to characterize the hydration products. Two C-S-H phases having distinctly different structures (molecular and micro) and weight loss characteristics exist in the system CaO-SiO2-H2O and along the 10 wt % isoalumina ...

Applications of Free-Electron Lasers to Measurements of Energy Transfer in Biopolymers and Materials

12 pages

Authors: Glenn Edwards; Bruce Johnson; John Kozub; Jerri Tribble; Katrina Wagner; VANDERBILT UNIV NASHVILLE TN DEPT OF PHYSICS AND ASTRONOMY

Free-electron lasers (FELs) provide tunable, pulsed radiation in the infrared. Using the FEL as a pump beam, we are investigating the mechanisms for energy transfer between localized vibrational modes and between vibrational modes and lattice or phonon modes. Either a laser-Raman system or a Fourier transform infrared (FFIR) spectrometer will serve as the probe beam, with the attribute of placing the burden of detection on two conventional spectroscopic techniques that ...

Piezoelectric Metal Biosensors

01 APR 90

5 pages

Authors: K. N. Raymond; C. J. Hawkins; L. R. Gahan; CALIFORNIA UNIV BERKELEY

We have investigated the response of 10 MHz AT-cut Ag electroded piezoelectric crystals to aqueous NaCl solutions (concentration 0.5 to 1.0 mM) and found that the frequency change is linear in this region. We have also investigated the response of these crystals to 4.0 mM solutions of LiCl, NaCl, KCl, RbCl, and CsCl. The alteration of the alkali cation has an effect on the delta f such that the greatest ...

Preparation and Characterization of Members of the System La(2-x)A(1+x) Cu2O (+ or - Y) Where A = Ca,Sr

12 MAY 89

Authors: K. Doverspike; J. H. Liu; K. Dwight; A. Wold; BROWN UNIV PROVIDENCE RI DEPT OF CHEMISTRY

Members of the system La2-xA1+xCu206+y where A = Ca, Sr were prepared by decomposition of the nitrates. The tolerance of these compounds for oxygen uptake, as well as the substitution for the A-site ions, is shown to be closely related to the distribution of the alkali earth ions on the 8- and 9- coordinated A-sites. Lanthanum compounds, Calcium compounds, Strontium compounds, Copper oxides. (mjm)

Current & Thermal Noise in Mixed Na/Ag Beta Alumina

MAR 89

Authors: James J. Brophy; UTAH UNIV SALT LAKE CITY DEPT OF PHYSICS

Current noise in mixed-ion Na/Ag Beta alumina ceramics is characteristic of conductivity fluctuations due to diffusion noise of the mobile ions as previously observed in Na, Ag, and Pb Beta alumina single-ion conductors and for mixed-ion Na/Ca Beta alumina. The measured diffusion noise levels are greater for current injection of Ag ions from AgNO3 solution electrodes. Room temperature conductivities calculated from thermal noise measurements are the same for both Na ...

Conductivity Fluctuations in Mixed Na/Ca Beta Alumina

17 FEB 89

Authors: Chu K. Kuo; James J. Brophy; UTAH UNIV SALT LAKE CITY DEPT OF PHYSICS

Conductivity fluctuations in mixed Na/Ca beta alumina ceramics for different values of the Na/Ca ratio are observed to be similar to diffusion noise of the mobile ions seen in Na, Ag, and Pb beta alumina. Measured noise levels increase two orders of magnitude in changing from 100% Na to 100% Ca ions in the structure. In mixed Na/Ca ceramics the noise is greater for NaI solution current electrodes than for ...

Dynamics of Gas-Surface Interactions

02 FEB 89

Authors: S. J. Sibener; CHICAGO UNIV IL JAMES FRANCK INST

This research initiative has dealt with the interaction of atomic, molecular, electron, and optical beams with well-characterized single crystal surfaces. These studies were motivated by a desire to understand and control catalytic surface chemistry, the technological need to characterize the physical properties of thin films and surfaces, and the desire to understand how energy and momentum are exchanged at the surface of a material when it is subjected to gas-surface ...

International Conference on Defects in Insulating Crystals Held at Parma, Italy on August 29-September 2, 1988

SEP 88

Authors: PARMA UNIV (ITALY) DIPT DI FISICA

The 1988 Parma Conference carries on the tradition of International Conferences, which originated as a meeting on Color Centers in Alkali Halides in 1956. Over the years the meeting has developed into the International Conference on Defects in Insulating Crystals. This year it will focus on the current state of knowledge of defects and defect processes in a wide range of materials. It will bring together scientists from both academic ...

13C NMR Studies of Poly(Propylene Oxide) Complexed with Alkali Iodides

AUG 88

Authors: R. E. Stark; S. G. Greenbaum; Y. S. Pak; HUNTER COLL NEW YORK DEPT OF PHYSICS AND ASTRONOMY

Complexes formed between certain polyethers and alkali metal salts have received considerable attention as solid electrolytes for high energy density battery applications. Poly(propylene oxide) (PPO) is known to form amorphous and single-phase complexes with a variety of lithium and sodium salts. Previous nuclear magnetic resonance studies of PPO-NaI samples have demonstrated the presence of enhanced Na mobility in the temperature region just above the glass transition temperature, Tg. This observation ...

International Symposium on Gas Kinetics (10th), Abstracts of Papers (24- 29 July 1988

29 JUL 88

Authors: ROYAL SOCIETY OF CHEMISTRY LONDON (UNITED KINGDOM)

Topics include: State-to-state biomolecular reaction dynamics; Thermal and state-to-state kinetics in reactions of the CN radical studied in pulsed laser photolysis time resolved laser induced fluorescence experiments; Fast-flow studies of atomic carbon kinetics at 300 K; The chemistry of the alkali metals in the mesosphere: rates of formation and photodissociation of the alkali superoxide molecules. (jes)

Chemistry and High Tc Superconductivity in the La-Ba-Cu-O System

15 JUL 88

Authors: Shu Li; Martha Greenblatt; RUTGERS - THE STATE UNIV NEW BRUNSWICK NJ DEPT OF CHEMISTRY

A systematic investigation of the chemistry and superconductivity in the La-Ba-Cu-O system was carried out, using X ray powder diffraction, resistivity and TGA measurements. A phase diagram for the La-Ba-Cu-O quasi- ternary system at 950 C has been determined and the relationship between the phases in this system is discussed. A series of A-cation (ABO3-type perovskite) deficient compounds of the type of (LaBa2)xCu3O7.0 (0.67 < x < 0.96) were prepared. ...

A 6 to 18 GHz Monolithic Feedbnack Amplifier.

MAY 1988

Authors: S. Bandla; F. Spooner; ALPHA INDUSTRIES INC WOBURN MA

General Tell Lawmakers New Soviet Tanks Make US Systems Obsolete.

MAY 1988

Authors: S. D. Dean; B. F. Schemmer

Estimation of Small Perturbations in an Inertial Sensor.

APR 1988

Authors: P. E. Zadunaisky; R. S. Sanchez Pena

An inertial sensor that can be simulated mathematically by a second-order ordinary differential equation is considered. Such an equation involves an unknown perturbing function that represents the effects of mass unbalance and anisoelasticity. Assuming that the solution of the differential equation and its first derivative are

Development of Low-Altitude Air Defense Systems.

APR 1988

Authors: M. W. Fossier; RAYTHEON CO BEDFORD MA MISSILE SYSTEMS DIV

A Comparison of Various Alkali Gas Cell Atomic Frequency Standards

12 FEB 88

Authors: J. C. Camparo; R. P. Frueholz; AEROSPACE CORP EL SEGUNDO CA CHEMISTRY AND PHYSICS LAB

The present calculations indicate that a Rubidium gas cell standard shows the greatest potential for frequency stability, and in this regard nature has been uncommonly propitious. One should not, however, interpret this result as a superiority of the Rb87 standard in all regards. For example, if it is of primary importance to construct a miniature gas cell standard; then cesium might prove to be more advantageous given the fact that ...

Alkali Wall Relaxation in Dichlorodimethylsilane Coated Resonance Cells

01 JAN 88

Authors: James C. Camparo; AEROSPACE CORP EL SEGUNDO CA CHEMISTRY AND PHYSICS LAB

Alkali wall relaxation rates for Pyrex resonance cells coated with dichlorodimethylsilane have been studied. In particular, by considering the ratio of the Rb85 wall relaxation rate to the Rb87 wall relaxation rate, evidence is presented showing that dimethylsiloxane surfaces and alkane (paraffin) surfaces relax alkali polarization with similar interaction strengths and correlation times. This conclusion indicates that the outermost functional group of an organic surface molecule has the primary influence ...

Immune Modulation by Coxiella burnetii: Characterization of a Phase 1 Immunosuppressive Complex Differentially Expressed among Strains

Authors: David W. Waag; Jim C. Williams; ARMY MEDICAL RESEARCH INST OF INFECTIOUS DISEASES FORT DETRICK MD

Coxiella burnetii, the etiological agent of Q fever, possesses immunomodulatory activity which positively and negatively regulates host immune responses. We wish to determine the Coxiella strain differences and the chemical nature of cellular components suppressing lymphocyte responsiveness. The bacterial components responsible for the immunomodulatory activity are associated with phase I cells. In its natural state, the phase I cell- associated, immunosuppressive complex (ISC) was resist ANNOTATION:

Proceedings of the Topical Meeting on the Microphysics of Surfaces, Beams, and Adsorbates (2nd) Held in Sante Fe, New Mexico on 16-18 February 1987

31 OCT 87

Authors: Jarus W. Quinn; T. M. Mayer; D. J. Ehrlich; T. J. Chuang; OPTICAL SOCIETY OF AMERICA WASHINGTON D C

Partial Contents: The reaction of Si(100) 2 x 1 with NO and NH3: The role of surface dangling bonds; Molecular dynamics simulation of low-energy beam deposition of silicon; Visible laser etching of refractory metals by surface modification; Modulated molecular beam studies of the surface chemistry of silicon reaction with reactive gases; Effects of Ar(+) angle of incidence on the etching of Si with Cl2 and low energy Ar(+) ions; Multiphoton ...

Diallyl Telluride and Synthesis of Diorgano Tellurides.

26 JUN 1987

Authors: Caniel C. Harrid; Kelvin T. Higa; DEPARTMENT OF THE NAVY WASHINGTON DC

A new, symmetrical dialkyl telluride compound has been synthesized and found to be useful as a tellurium source compound in the Metal Organic Chemical Vapor Deposition film growth process. The procedure for preparing other diorgano tellurides. The new compound and other diorgano telluride compounds are prepared from alkali metal tellurides obtained by an efficient reaction between an alkali metal and tellurium in a naphthalene/tetrahydrofuran solution. An alkali metal telluride then ...

International Symposium on Polymer Electrolytes (1st)

JUN 87

Authors: SAINT ANDREWS UNIV (UNITED KINGDOM)

Contents: Insights into ion-matrix and ion-ion couplings in polymer- salt electrolytes from relaxation spectroscopy; Proton conductors; diffusion of ions on polymer electrolytes; Comb shaped polymer electrolytes; Cross-linked polyethers as media for ionic conduction; Some recent results from the ACEP project to develop rechargeable lithium-polymer electrolyte batteries; Divalent polymer electrolytes; Ion transport, free volumes, dynamic percolation and ion interactions in polymer electrolytes; Electrode kinetics in cells based on polymer electrolytes; Ionic ...

Electrodeposition of Refractory Metal Silicides.

05 MAY 1987

Authors: Kurt H. Stern; DEPARTMENT OF THE NAVY WASHINGTON DC

A refractory metal silicide coating is electrodeposited onto an object, using a bath containing an alkali fluoride melt, a silicon fluoride dissolved in the melt, a refractory metal-containing compound also dissolved in the melt. An anode composed of the refractory metal is immersed in the bath. The article to be coated is immersed in the bath as the cathode, a platinum electrode is immersed in the bath, and a voltage ...

Suppression Workshop Summary

07 APR 87

Authors: Joseph M. Heimerl; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

A workshop on the Chemical Suppression of Rocket Afterburning and of Gun Muzzle Flash was held at the Ballistic Research Laboratory on 11 and 12 June 1986. It brought together scientists representing six countries to share their collective fundamental understanding of the elementary, controlling processes in the generation of and the suppression of secondary combustion processes. This report is a distillation of the events of that workshop. It consists of ...

Simulation Experiments of Reacting Two-Phase Flow

06 APR 87

115 pages

Authors: Guenter Klingenberg; FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E V MUNICH (GERMANY F R)

A gas gun simulator that permits the generation of relatively clean, two-phase, reacting flows with realistic ballistic gas pressures and temperatures has been developed. This gas gun is driven by the combustion of the gas mixture 3H2 + O2 + 8He. With this gas propellant mixture, the gas gun is capable of simulating both the interior and transitional ballistic flows of medium caliber weapons. In the experiments, emphasis has been ...

Solar Plasma Propulsion

MAR 87

Authors: C. W. Larson; DAYTON UNIV OH RESEARCH INST

The simultaneous measurement of absorption and emission spectroscopy is proposed to enable quantitative determination of the performance of a gaseous plasma solar energy receiver. Production of an experimental spectroscopy data base of species composed of hydrogen and selected Group 1 elements (the alkali metals) and Row 2 elements (carbon, nitrogen, and oxygen) approaching conditions heretofore unattained in a static gas spectrometer cell, 3000 K and 100 atmospheres, is the principal ...

Proceedings of the Workshop on the Chemical Suppression of Rocket Afterburning and of Gun Muzzle Flash

MAR 87

290 pages

Authors: Joseph M. Heimerl; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Partial contents: 'Gun Muzzle Flash Research; 'Kinetics Networks and MEFF-code Predictions; 'Flash Simulation with a Global Reaction Model for Transient Flow from the 84 mm Carl Gustaf Rifle'; 'Detailed High Temperature Oxidation Chemistry of the Alkali Metals In Flames'; 'Spectroscopic Measurements in the Exhaust Flow of a 7.62 mm Rifle Using Propellants With and Without Chemical Flash Suppressants'; 'Chemical Kinetic Studies and Infrared Laser Detection of Potassium and Sodium Species ...

Alkali Atom - Tetrahaloethylene Chemiluminescent Reactions

22 SEP 86

Authors: John J. Wright; NEW HAMPSHIRE UNIV DURHAM DEPT OF PHYSICS

The object of this research project was to investigate new vapor phase chemiluminescent reactions between alkali atoms and halide molecules in order to discover promising candidates for short-wavelength chemical lasers. Many reactions were studied and several of these were found to produce visible emission from electronically excited molecules. Five of these reactions produced molecules that had either vibrationally inverted populations in the excited state or had transitions to high lying ...