| Biotreatment of Gaseous-Phase Volatile Organic Compounds |
31 JUL 90 |
73 pages |
| Authors:
P. S. Ziegenfuss; R. T. Williams; D. Orvos; P. J. Marks; WESTON (ROY F) INC WEST CHESTER PA
|
 | Past disposal of volatile organic solvents has resulted in contamination of soils at U.S. Army installations. Technologies that involve volatilizing or air stripping contaminants from contaminated soils are used for remediation of these sites. The resulting stream of gaseous volatile organic compounds (VOCs) must be treated before the air stream is released to the atmosphere. Thermal treatment or carbon adsorption of gaseous VOCs is effective but expensive. The present study ... |
|
| Interactive Influences of Selected Environmental Variables on Growth and Tuber Formation in Hydrilla |
JUL 90 |
26 pages |
| Authors:
Dwilette G. McFarland; John W. Barko; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
| In a 5-week greenhouse investigation, variations in the growth of both monecious and dieocious Hydrilla (Hydrilla verticilata (L. f.) Royle) were compared over a range of temperatures (12 to 32 C) on a fertile inorganic sediment and on a infertile organic sediment. For these biotypes, total biomass production was severely restricted at 16 C and below, with thermal optima for growth occurring between 28 and 32 C. Total biomass, shoot ... |
|
| Publications/Patents/Presentations/Honors/Students Report |
21 MAY 90 |
7 pages |
| Authors:
Kelvin T. Higa; NAVAL WEAPONS CENTER CHINA LAKE CA
|
| New synthetic methods and techniques are being investigated to produce new organometallic compounds as precursors for optical and electronic materials. New synthetic routes for the preparation of III-V clusters and polymers and their electronic and optical properties are under investigation. The relationship between precursor structure and the resulting inorganic phases after pyrolysis are under examination to determine if certain cluster types will result in exclusively cubic or tetragonal structures after ... |
|
| Composites Supportability Rapid Test and Evaluation |
MAY 90 |
167 pages |
| Authors:
D. R. Askins; R. Kuhbander; S. Saliba; C. Griffen; G. W. Lawless; DAYTON UNIV OH RESEARCH INST
|
| Materials investigations were conducted in the general areas of adhesive bonding, composite materials, aircraft transparencies, and elastomeric seals. These studies were oriented towards characterization of new materials and processes, development of repair techniques, development of new processing techniques, and solution of current operational problems involving materials and processing. Some qualification testing was carried out on new materials. Studies involved the characterization of inorganic and water-based primers for adhesive bonding, adhesive ... |
|
| Structure-Property Behavior of New Organic-Inorganic Polymeric Hybrid Materials Based on Sol Gel Chemistry |
MAY 90 |
10 pages |
| Authors:
Garth L. Wilkes; VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF CHEMICAL ENGINEER ING
|
| The purpose of this work has been to synthesize and characterize the structure-property response of new inorganic-organic hybrid materials that incorporate functionalized organic oligomers with metal alkoxides through the use of sol gel reactions. These systems, which have been termed 'ceramers' as a result of their possessing properties of both ceramic like materials (inorganic glasses) as well as organic polymers, can vary significantly in their properties due to altering the ... |
|
| A Collaborative US/UK Research Program in Advanced Silica Macromolecular Micro-Optics |
30 APR 90 |
231 pages |
| Authors:
Jean-Luc R. Nogues; GELTECH INC ALACHUA FL
|
| The major challenge facing sol-gel processing of advanced optical materials, and in fact the entire field of chemically derived ceramics, is to relate processing variables to final properties. Fundamental studies of sol-gel processing science pursued at GELTECH during the last few years have led to two major accomplishments: (1) Development of a generic sol-gel process for producing fully dense silica monoliths (Type V Silica) (2) Development of a generic sol-gel ... |
|
| Better Ceramics Through CHemistry IV. Symposium Held in San Francisco, California on April 16 - 20, 1990. Volume 180 |
20 APR 90 |
1143 pages |
| Authors:
Brian J. Zelinski; C. J. Brinker; David E. Clark; Donald R. Ulrich; MATERIALS RESEARCH SOCIETY PITTSBURGH PA
|
| Partial contents: Reaction Mechanisms and Kinetics: Sol-Gel Chemistry of Hydrogenosiliconates: The Role of Hypervalent Silicon Species; High Pressure Raman Study of the Hydrolysis Reaction of TMOS and TEOS; Molecular Architecture and its Role in Silica Sol-Gel Polymerization; Synthetic and Structural studies of Bismuth/Copper Alkoxides; Precursor Effects and Aqueous Chemistry: Molecular Structure of Metal Alkoxide Precursors; Tailored Molecular Precursors of Yttrium Oxide Using Functional Alcohol and Acetylacetone as Modifiers; and NMR ... |
|
| Ultrafast, Broad-Band, Passive Laser Shields Based on Novel Semiconductor/Conducting Polymer Interface Technology - SBIR 89.I (A89-083). Phase 1 |
14 FEB 90 |
41 pages |
| Authors:
P. C. Sekhar; GUMBS ASSOCIATES INC EAST BRUNSWICK NJ
|
| The present work set out to address the critical need for a passive, dynamic (switchable), ultrafast (sub-ns), broad-band (across the Vis.-NIR), durable, yet transmissive 7511 scotopic transmission in unswitched state) laser shield for protection of personnel eyes against exposure to hazardous laser radiation in combat situations with a novel technology combining inorganic semiconductor (SC) electrodes with novel conducting polymers (CPs) in a single, solid-state interface. The viability of the SC/CP ... |
|
| Particle Dynamics in the Sea: Processes of Production and Loss Governing the Abundance of Marine Snow |
05 JAN 90 |
384 pages |
| Authors:
Alice L. Alldredge; CALIFORNIA UNIV SANTA BARBARA MARINE SCIENCE INST
|
| Much of the suspended particulate matter in the ocean exists as aggregates of smaller particles of algae, bacteria, organic detritus and inorganic particles. The characteristics and abundances of these aggregates affect trophic interactions, chemistry and optical properties of the water column. The goal of this research was to quantify several processes governing the rates of production, breakdown and loss of marine aggregates, particularly those larger than 500 um, known as ... |
|
| Water-Quality, Well-Construction, and Ground-Water Level Data for an Investigation of Radionuclides in Ground Water, Hickman and Maury Counties, Tennessee |
1990 |
19 pages |
| Authors:
Gregg E. Hileman; GEOLOGICAL SURVEY WASHINGTON DC
|
| Water-quality, well-construction, and ground-water level data were collected for an investigation of radionuclides in ground water in Maury and Hickman Counties, Tennessee. Seventeen wells and 3 springs were sampled in Hickman County, and 20 wells were sampled in Maury County. Data are presented in tables. Maps of each county show the Location of the data-collection sites. Samples from each site were analyzed for radionuclides, common and trace inorganic ions, indicators ... |
|
| NMR (Nuclear Magnetic Resonance) Imaging Development for the Study of Solids |
20 DEC 89 |
10 pages |
| Authors:
B. H. Suits; MICHIGAN TECHNOLOGICAL UNIV HOUGHTON DEPT OF PHYSICS
|
| The Techniques of Nuclear Magnetic Resonance imaging are developed for simple inorganic solids and applied to the study of mechanically induced defects in NaC1. The Feasibility of the technique is demonstrated for defect (dislocation) densities greater than 10 million/sq cm with a resolution of better than 1mm. Keywords: Imaging solids; Sodium chloride; Non destructive evaluation; Defects in solids. (JHD) |
|
| Measurement of Localized Deep Levels and Wafer Non-Uniformities at 3-5 Semiconductor Heterojunctions |
DEC 89 |
100 pages |
| Authors:
Stephen R. Forrest; UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES
|
| Reported are the results of a two year program in which organic thin films were used to non-destructively study the properties of inorganic semiconductor epitaxial materials. The organic films can be applied to the substrate in vacuum in a non-destructive manner such that many bulk and surface properties of the semiconductor under study can be easily obtained. Once the characterization process is complete, the thin films can be removed without ... |
|
| Advanced Artificial Dielectric Materials for Millimeter Wavelength Applications. Part A |
30 NOV 89 |
137 pages |
| Authors:
Israel S. Jacobs; GENERAL ELECTRIC CO SCHENECTADY NY
|
| This is Part A of a two-part Final Technical Report and is restricted to essentially non-magnetic composite dielectrics. Part B, which contains classified material, treats magneto-dielectric composites. We study the electromagnetic properties (permeability and permittivity) of artificial dielectrics with metal particles (1 micrometer to 37 micrometers randomly loaded into both polymeric and inorganic binders. The alloy powder particles are oxide- coated for isolation (non-percolating) and ferromagnetic only below room temperature ... |
|
| Inorganic Composite Materials in Japan: Status and Trends |
NOV 89 |
58 pages |
| Authors:
M. J. Koczak; K. Prewo; A. Mortensen; S. Fishman; M. Barsoum; OFFICE OF NAVAL RESEARCH LIAISON OFFICE FAR EAST APO SAN FRANCISCO 96503
|
| Japan's high performance composite research activities and applications are reviewed by six authors who teamed as a study group in September 1988 to assess selected research areas of composite activities. This article focuses on metal and ceramic matrix composites and high temperature ceramic reinforcements, excluding carbon fibers and polymer matrix composites. It is the intention of this article to capture the current trends and scientific accomplishments of university, government research ... |
|
| Proceedings of the Tri-Service Conference on Corrosion Held in Atlantic City, New Jersey on 17-19 October 1989 |
19 OCT 89 |
645 pages |
| Authors:
Vinod S. Agarwala; NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA SURFACE INTERACTIONS RESEARCH LAB
|
| The purpose of this conference is to develop new directions, and highlight the awareness that the problems of corrosion in the military are far from over. There is a serious need for new approaches, methods and products for our aging weapon systems. Concepts like smart coatings, materials with artificial intelligence, sensors and electric field or electronic barriers for corrosion protection will become the technology of tomorrow. The paper published in ... |
|
| Inorganic Halogen Oxidizers |
04 OCT 89 |
13 pages |
| Authors:
K. O. Christe; ROCKWELL INTERNATIONAL CANOGA PARK CA ROCKETDYNE DIV
|
| The purpose of this program was to explore the synthesis and properties of energetic inorganic halogen oxidizers. Although the program was directed toward basic research, applications of the results generated major technological breakthroughs. Thus, the first chemical synthesis of elemental fluorine was achieved, pure fluorine solid-propellant gas generators were developed, and a continuous ion exchange process for the production of advanced NF4+ salts was worked out. Keywords: Inorganic halogen oxidizers, ... |
|
| Synthesis and Characterization of New Low-Dimensional Metal Complex Conductors |
01 OCT 89 |
12 pages |
| Authors:
William E. Hatfield; NORTH CAROLINA UNIV AT CHAPEL HILL DEPT OF CHEMISTRY
|
| This research program was devoted to the synthesis and characterization of new transition metal complex electrical conductors. The primary objective of the program is to develop guidelines which will lead to the rational synthesis of electrical conductors with desired properties, with a secondary mandate being to solve important scientific problems that are encountered in the research. Keywords: Low-dimensional metal complex conductors; Mixed-valence compounds; Yttrium; Barium; magnetic susceptibility; Cooper complexes; Electrical ... |
|
| Photon-Gated Persistent Spectral Hole-Burning |
11 SEP 89 |
30 pages |
| Authors:
W. E. Moerner; IBM ALMADEN RESEARCH CENTER SAN JOSE CA
|
| This article reviews recent progress in the area of photon gated persistent spectral hole burning, in which one photon selects absorbers in an inhomogeneously broadened line and a second gating photon of a different wavelength completes the excitation necessary to produce a spectral hole. This phenomenon provides a crucial threshold in the hole formation process, allowing reading with the first wavelength alone to be nondestructive. Examples of photo gating in ... |
|
| Analysis and Evaluation of Technical Data on the Photochromic and Non- Linear Optical Properties of Materials. Appendix. Eye/Sensor Protection by an Optical Fuse Mirror at a Focal Plane: Feasibility Assessment |
07 AUG 89 |
9 pages |
| Authors:
Robert F. Cozzens; GEORGE MASON UNIV FAIRFAX VA
|
| A possible approach to protecting eyes and electrooptical sensors is to use a device having a focal plane with an optical switch or optical fuse at or near the focus. The fuse could be manually reset to a fresh undamaged section following its failure. A variety of optical fuse concepts using a focal plane may be envisioned. One such system employs a thin metal reflector at the focal plane which ... |
|
| Electro-Deposited Primer Development and Low-Polluting Primer Evaluation |
AUG 89 |
270 pages |
| Authors:
R. H. Greer; A. V. Pocius; ROHR INDUSTRIES INC CHULA VISTA CA ENGINEERING RESEARCH AND DEVELOPMENT DEPT
|
| The objectives of this Air Force program are to develop, evaluate, demonstrate, and qualify an electro-deposited (ED) corrosion resistant primer system for metal bonding suitable for use with 350 F curing adhesives and to evaluate other low-polluting primer systems (such as water-base spray and dip systems or inorganic primers) which would be suitable for use with 350 F curing adhesives. Several electro-deposited primer formulations were evaluated to determine the optimum ... |
|
| Review of Literature on Waste Solidification/Stabilization with Emphasis on Metal-Bearing Wastes |
AUG 89 |
53 pages |
| Authors:
Sandra Clark; Talya Greathouse; Jeffrey Means; BATTELLE COLUMBUS DIV OH
|
| Heavy metal contamination is the second most common contaminant minant at past Naval disposal sites. Various solidification/stabilization processes are available to make waste nonhazardous. Their effectiveness depends on the type, combination, and concentration of contaminants in the waste. Hazardous waste, Inorganic wastes, Chemical fixation stabilization, Solidification, Heavy metals. (jes) |
|
| A Leachate Recycle Management and Pollutant Loading Strategy at Codisposal Landfill Sites: A Special Research Problem |
JUL 89 |
|
| Authors:
Stephen F. Tyahla; GEORGIA INST OF TECH ATLANTA SCHOOL OF CIVIL ENGINEERING
|
 | The purpose of this study was to evaluate the behavior and fate of selected inorganic and organic priority pollutants codisposed with municipal solid waste in simulated landfills operated with either single pass leaching or leachate recirculation, and, through observation of relative effects on the progress of natural stabilization process, develop a leachate management and pollutant loading strategy for codisposal landfill operations employing leachate recycle. Chapters 2 through 5 of this ... |
|
| Biodegradation of Chemicals at Trace Concentrations |
30 JUN 89 |
|
| Authors:
Martin Alexander; CORNELL UNIV ITHACA NY
|
| Studies were conducted to evaluate factors affecting t he biodegradation of toxic and hazardous organic chemicals in soils and surface, ground and waste waters. The factors determined to be of importance to these transformations and to proposed bioremediation actions were protozoan predation, inorganic nutrient supply, concentration of the test organic compound, the presence of inhibitors and alternative sources of biodegradable molecules, and the sorption and water solubility of the toxicants. ... |
|
| Particle Emission and Charging Effects Induced by Fracture |
15 JUN 89 |
357 pages |
| Authors:
J. T. Dickinson; WASHINGTON STATE UNIV PULLMAN FRACTURE LAB
|
| A series of studies involving the physical consequences of deformation and fracture of materials are presented. These measurements include fracto-emission (FE) experiments on model rocket propellent, two studies on properties of ejecta (macroscopic particles) from materials including explosive crystals, fracture induced electrical breakdown, the detection of free charge carriers accompanying fracture in single crystal Si, Fe studies on polymers, adhesives, single crystal and amorphous inorganics, studies of fracture surfaces using ... |
|
| Metallo-Organic Decomposition Process for Dielectric Films |
15 JUN 89 |
66 pages |
| Authors:
R. W. Vest; G. M. Vest; PURDUE UNIV LAFAYETTE IN TURNER LAB FOR ELECTROCERAMICS
|
| The metallo-organic decomposition (MOC) process is a technique for producing inorganic films without processing in vacuum or going through a gel or powder step. The processing starts with metallo-organic compounds of the desired elements dissolved in an appropriate solvent. These solutions of individual metallo-organic compounds are then mixed in the appropriate ratio to give the desired cation stoichiometry for the final film to produce a formulation, which is itself a ... |
|
| Symposium on Metals in Biochemistry and Materials Science |
JUN 89 |
11 pages |
| Authors:
R. B. King; GEORGIA UNIV ATHENS
|
| The 1989 Biennial Inorganic Symposium with the theme Inorganic Compounds with Unusual Properties. III. Electron Transfer in Biology and the Solid State was held at the University of Georgia in Athens, Georgia, during the period March 1-4, 1989. The symposium stimulated interactions between scientists studying mechanisms of electron transfer between metal centers in solid state materials and those studying the same process in metalloproteins. The program consisted of 17 invited ... |
|
| Quantitative Analysis of Laser Interferometer Waveforms Obtained during Oxygen Reactive-Ion Etching of Thin Polymer Films |
12 MAY 89 |
23 pages |
| Authors:
B. C. Dems; F. Rodriguez; P. D. Krasicky; CORNELL UNIV ITHACA SCHOOL OF CHEMICAL ENGINEERING
|
| Continuous laser interferometry, especially of inorganic materials, during reactive ion etching often has been used as an end-point detection method. However, the detailed patterns obtained during etching of thin organic polymer films have not been fully exploited. The sinusoidal oscillations in reflected light intensity often exhibit almost uniform amplitudes. In addition to variations in the rate of etching with time or depth, a rigorous analysis of the waveform yields an ... |
|
| Porous Ceramic Bodies. |
09 MAY 1989 |
|
| Authors:
Clarence A. Andersson; Deborah P. Partlow; Bulent E. Yoldas; DEPARTMENT OF THE AIR FORCE WASHINGTON DC
|
| This invention relates to porous ceramic bodies. Renewed interest in lightweight porous ceramics has been stimulated by the need for materials having low thermal expansion, low dielectric constant, and/or low density for certain high-tech applications. It is an object of the present invention to provide an improved method for fabricating porous ceramic bodies. In accordance with the present invention there is provided an improved method for making a lightweight porous ... |
|
| Theoretical Model for Stabilization of Clay-Silt Airport Pavement Subgrade Systems. Phase 1. Laboratory Investigation. Phase 2. Rutting Tests |
MAY 89 |
326 pages |
| Authors:
William A. Grissom; Abayomi J. Ajayi-Majebi; L. S. Smith; Carl L. White; Mahmoud A. Abd-Allah; CENTRAL STATE UNIV WILBERFORCE OH DEPT OF MANUFACTURING ENGINEERING
|
| The results of a research effort executed at Central State University, Manufacturing Engineering Department on the development of theoretical models for low-volume airport pavement stabilization of clay-silt systems are documented. This study is considered very significant because it identifies a non-traditional method of soil stabilization for improving the subgrade strength of poorly graded clay-silt, considered one of the most difficult soil types to stabilize. The research (Phase I) focuses on: ... |
|
| Influence of Well Casing Composition on Trace Metals in Ground Water |
APR 89 |
22 pages |
| Authors:
Alan D. Hewitt; COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
|
| These experiments determined the concentration dependence of trace inorganic priority pollutants (As, Cd and Pb) in ground water solutions exposed to polyvinylchloride (PVC), polytetrafluoroethylene (PTEE) and two types of stainless steel (SS304 and SS316). The test design used a factorial screening matrix with two concentrations of metals (As-Cr-Pb, 50 and 10 micrograms/L; C/d, 10 and 2 micrograms/L), pH (5.8 and 7.7), and total organic carbon (natural and natural plus 5 ... |
|
| Combustion Product Evaluation of Various Charge Sizes and Propellant Formulations |
APR 89 |
145 pages |
| Authors:
Alan Snelson; Paul Ase; Kevin Taylor; Sydney Gordon; IIT RESEARCH INST CHICAGO IL
|
| Combustion products from 25, 105, 120, and 155 mm caliber guns firing rounds containing WC890, M30, JA2, and M30A1 propellants, respectively have been determined. Combustion gases were sampled from the breech on all guns, from spent casings (25 and 105 mm caliber guns) and from a bore evacuator on a 155 mm caliber run. To a greater or lesser degree the following species were quantified: (1) volatile inorganic gases and ... |
|
| European Science Notes Information Bulletin Reports on Current European/Middle Eastern Science, |
MAR 1989 |
65 pages |
| Authors:
C. J. Fox; OFFICE OF NAVAL RESEARCH EUROPEAN OFFICE FPO NEW YORK 09510
|
| ESNIB is a compilation of reports on recent developments in European science of specific interest to the US R&D community. Topics in this issue include: Computational acoustics and vortex dynamics at the 12th IMACS world congress; The 4th International Symposium on Small Particles and Inorganic Clusters; Report on 3rd International Conference on Stability and Handling of Liquid Fuels; Concurrent computers and their use in physics; The Edinburgh Concurrent Supercomputer Center--an ... |
|
| Organometallic and Bioactive Cyclophosphazenes, and the Relationship to Inorganic Macromolecules |
09 FEB 89 |
20 pages |
| Authors:
Harry R. Allcock; PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF CHEMISTRY
|
| Cyclophosphazenes have two relationships to linear high polymers: first, they may function as monomers for polymerization to high polymers; and second; they serve as small molecule reaction and structural models for the high polymers. These principles are illustrated by the behavior of cyclophosphazenes that bear organometallic side groups, and by species that have side units that are biomedical interest. Some emerging applications of this chemistry are also mentioned. Polymers, Inorganic, ... |
|
| Reactions of Inorganic High Polymers as a Route to Tailored Solids |
09 FEB 89 |
16 pages |
| Authors:
Harry R. Allcock; PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF CHEMISTRY
|
| A new class of reactive inorganic polymers--the polyphosphazenes-- can be used as macromolecular intermediates for the synthesis of a wide range of inorganic-organic solids. By reactions that change the polymer side groups, it is possible to bias the properties toward elastomers or microcrystalline polymers, liquid crystalline materials, bioerodable solids, solids with bioactive surfaces, solid electrolytes, semiconductors, or ultrastructures. Solids, Polymers, Phosphazenes, Synthesis, (Chemistry). (jes) |
|
| New Bedford Harbor Superfund Project, Acushnet River Estuary Engineering Feasibility Study of Dredging and Dredged Material Disposal Alternatives. Report 8. Compatibility of Liner Systems with New Bedford Harbor Dredged Material Contaminants |
OCT 88 |
53 pages |
| Authors:
Richard A. Shafer; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
| New Bedford Harbor sediments contain substantial amounts of both organic and inorganic contaminants. Leaching studies with this sediment indicate that the leachate generated from the disposal of these sediments may contain significant amounts of the same contaminants. This investigation examined the available literature and data pertaining to the chemical compatibility of synthetic and natural liners with both organic and inorganic contaminants. Although compatibility testing with various liner materials and leachate ... |
|
| The Kinetics and Dynamics of Iodine Monofluoride Formation in Gas-Phase Collisions |
15 SEP 88 |
9 pages |
| Authors:
J. C. Whitehead; MANCHESTER COLL OF SCIENCE AND TECHNOLOGY (ENGLAND) DEPT OF CHEMISTRY
|
| The production of IF(B) in gas phase collisions of fluorine atoms with various organic and inorganic iodides has been investigated to determine methods of efficient production. The key role of electronically excited iodine atoms has been identified. Excimer laser photolysis of mixtures of molecular fluorine and organic iodides is shown to yield high pulse intensities of IF(B). Chemical Laser, Iodine Monofluoride, Chemiluminescence. (mgm) |
|
| Proceedings of the International Conference on Raman Spectroscopy (11th) Held in London, England on 5-9 September 1988 |
09 SEP 88 |
|
| Authors:
R. J. Clark; D. A. Long; ROYAL SOCIETY OF CHEMISTRY LONDON (UNITED KINGDOM)
|
| This volume contains the texts of the plenary lectures and contributed papers presented at the 11th International Conference on Raman Spectroscopy. Major topics include: Raman theory; Vibrational analysis and molecular structure; SERS (Surface Enhanced Raman Scattering); SERS, Surface and interfacial phenomena; Inorganic materials and matrices; The solid state; Semiconductors and superconductors; Phase transitions and effects of temperature and pressure; Low dimensional and amorphous solids; Resonance Raman spectroscopy; Time-resolved Raman scattering ... |
|
| PBT,PBO-Based Hybrid Polymers with Nonlinear Optical Properties or High Electrical Conductivity |
29 AUG 88 |
29 pages |
| Authors:
Tobin J. Marks; Stephen H. Carr; NORTHWESTERN UNIV EVANSTON IL
|
| This project involves a collaborative synthetic, polymer processing, and physicochemical program directed at exploiting the unique properties of the high modulus/high strength polymers poly(p-phenylenebenzobisthiazole) (PBT) and poly- (p-phenylenebenzobisoxazole) (PBO) for electronic charge transport and nonlinear optical (NLO) properties. In the former area, we have continued our successful studies of directly doping these polymers by electrochemical means and of processing phthalocyanine/polymer hybrid materials. In the NLO area, we have continued exploration ... |
|
| International Symposium on Solubility Phenomena (3rd) Held in Guildford, Surrey England on 23 - 26 August 1988 |
26 AUG 88 |
72 pages |
| Authors:
SURREY UNIV GUILDFORD (UNITED KINGDOM)
|
| The Six Sessions of the Symposiums Consisted of Presentations of the following Topics: Microcalorimetry and Solubility Studies; Models For Studies of Solutions; Solubility of pollutants an other Inorganic Substances; Thermodynamics and Solubility studies; Solubility of Gases; Macrocyclic Systems and Organic Electrolytes; and Polymers, Miscelles and Miscellaneous Topics. Invited Lectures and Poster Sessions were also presented. Great Britain. (AW) |
|
| Investigations of the Optical and Electronic Properties of CrystallineOrganic Materials |
22 AUG 88 |
29 pages |
| Authors:
Stephen R. Forrest; UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF ELECTRICAL ENGINEERING
|
| A theory regarding transport of charge across crystalline molecular organic semiconductor/inorganic semiconductor heterojunctions is developed. It is found that transport under reverse bias, and under low forward bias is determined by carrier diffusion through the organic layer, and by thermionic emission across the heterojunction energy band discontinuity. Using the results of this theory, the valence band discontinuity energy between 3,4,9,10 perylenetetracarboxylic dianhydride and p-Si is directly measured ... |
|
| Laboratory-Scale Soil Washing Test on Rocky Mountain Arsenal Basin F material (Task Order No. 8) |
AUG 88 |
75 pages |
| Authors:
A. A. Balasco; J. I. Stevens; J. W. Adams; D. L. Cerundolo; S. Rickard; LITTLE (ARTHUR D) INC CAMBRIDGE MA
|
| To initiate the evaluation of the soil washing process, MTARRI designed and carried out a laboratory program to determine: the applicability of the process; and the conditions that would remove both the organic and inorganic contaminants from the Basin F materials to yield a clean soil that could be placed in a fill on-site. The process was then proven by a demonstration run, at the bench-scale. MTARRI had previously shown ... |
|
| Adsorption of Organo-Rhodium Species on Metal-Oxide Surfaces: Theoretical Aspects |
20 JUL 88 |
68 pages |
| Authors:
Jean F. Halet; Roald Hoffman; CORNELL UNIV ITHACA NY DEPT OF CHEMISTRY
|
| Tris(allyl( rhodium reacts with hydroxylated Titanium Oxide and Aluminum Oxide surfaces to produce oxide-bound bis(allyl)rhodium which, upon addition if Hydrogen, forms oxide-bound (allyl)rhodium hydride species. The nature of the rhodium-oxygen bonding and the role of the inorganic support are analyzed via extended Huckel ban d calculations on two-dimensional slabs of metal oxide and organo-rhodium adsorbates. Side by side with this analysis we looked at discrete molecular analogues of the surface ... |
|
| Photoreduction of Substituted Arenes with Borates and Borohydride: An Electron Transfer Mechanism |
06 JUL 88 |
6 pages |
| Authors:
Gary B. Schuster; Michael Kropp; ILLINOIS UNIV AT URBANA
|
| The photoreduction of organic compounds with inorganic metal hydrides is a topic of long-standing interest and recently recognized importance. Early, pioneering work by Paskovitch, Barltrop, Letsinger and Ohashi showed that the irradiation of aromatic hydrocarbons, nitriles, nitro compounds, or halides in the presence of NaBH4 gives products from formal substitution of hydride onto the aromatic nucleus. More recently, Epling and Florio re-examined these reactions and established relative rates for a ... |
|
| Technology Assessment of Field Portable Instrumentation for Use at Rocky Mountain Arsenal |
01 JUL 88 |
111 pages |
| Authors:
R. A. Jenkins; M. P. Maskarinec; W. H. Griest; F. F. Dyer; R. L. Moody; OAK RIDGE NATIONAL LAB TN
|
| An assessment was made of commercially available field instrumentation for analysis of samples at Rocky Mountain Arsenal. The analytes considered were metals, volatile organics, and semivolatile organics. Colorimetric tests for metals are recommended for screening, with positives being confirmed by microwave digestion followed by portable atomic absorption. A portable mercury monitor is recommended for this analysis. Portable X=ray fluorescence is recommended for higher levels of inorganics. For volatile organics, purge ... |
|
| Gordon Research Conference on Computational Chemistry Held in Plymouth, New Hampshire on 4-8 July 1988 |
JUL 88 |
20 pages |
| Authors:
Donald B. Boyd; Peter Kollman; GORDON RESEARCH CONFERENCES INC KINGSTON RI
|
| A Gordon Research Conference on Computational Chemistry was held at Plymouth State College 4-8 July 1988. A broad range of topics were covered in some depth: macromolecular simulations (molecular dynamics) of proteins and lipids, charge polarizability, protein folding, free energy perturbation calculations, conformational analysis of drug-sized molecules, molecular mechanics, pharmacophore mapping, computer-assisted molecular design, distance geometry, applied quantum mechanics at the ab initio and semiempirical levels, quantitative structure-property relationships, and ... |
|
| Identification of Materials from 60-mm Mortar Obturators |
JUL 88 |
29 pages |
| Authors:
Alfred F. Tatyrek; ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER DOVER NJ ARMAMENT ENGINEERING DIRECTORATE
|
| Two plastic obturators for the 60-mm mortar were submitted for physical and chemical analysis. One of the obturators was from current U.S. Army stock while the other was from a contractor which had failed by misfire during field tests. The analysis revealed their composition to be polycarbonate and acetal polymer resins, respectively. This report discusses in detail the physical and chemical analysis. The polycarbonate resin obturator, tinted with a green ... |
|
| Pseudo-Stark Effect and FM/Stark Double Modulation Spectroscopy for the Detection of Statistical Fine Structure in Alexandrite |
20 JUN 88 |
|
| Authors:
T. P. Carter; D. E. Horn; W. E. Moerner; IBM ALMADEN RESEARCH CENTER SAN JOSE CA
|
| Using laser-FM spectroscopy and transient spectral hole burning, the R1m transition of Cr3+ ions in alexandrite is shown to exhibit a linear pseudo- Stark effect with coefficients of 0.141 MHz-cm/V and 0.0538 MHz-cm/V at 1.6 K for electric fields along the crystal a and c axes, respectively. This result was used to develop a sensitive FM/Stark double modulation method for the detection of statistical fine structure (SFS) on the inhomogeneously ... |
|
| Metallo-Organic Decomposition Process for Dielectric Films |
15 JUN 88 |
|
| Authors:
R. W. Vest; G. M. Vest; A. S. Shaikh; G. L. Liedl; PURDUE UNIV LAFAYETTE IN TURNER LAB FOR ELECTROCERAMICS
|
| The metallo-organic decomposition (MOD) process is a technique for producing inorganic films without processing in vacuum or going through a powder step. The processing starts with metallo-organic compounds of the desired elements dissolved in appropriate solvents. A metallo-organic compound is one in which a metal atom is bonded to a hetero atom which in turn is bonded to an organic radical. These solutions of individual metallo-organic compounds are then mixed ... |
|
| State-of-The-Art-Dehumidification Cost-Effective Corrosion Prevention |
JUN 88 |
55 pages |
| Authors:
Craig S. Laurent; DEFENSE LOGISTICS AGENCY ALEXANDRIA VA
|
| Moisture-induced corrosion significantly degrades spare parts and material readiness. It increases life cycle and maintenance support costs. Corrosion can be in the form of rust, water stains, mold, mildew or other types of organic and inorganic degradation. Corrosion reduces productivity - or people and of resources. The cost of corrosion to the U.S. economy is tremendous. It is estimated that some $2-4 billion in corrosion damage occurs annually in each ... |
|
| Field Verification Program (Aquatic Disposal): Comparison of Field and Laboratory Bioaccumulation of Organic and Inorganic Contaminants from Black Rock Harbor Dredged Material |
MAY 88 |
201 pages |
| Authors:
James L. Lake; Walter Galloway; Gerald Hoffman; William Nelson; K. J. Scott; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
| The utility of laboratory tests for predicting bioaccumulation of contaminants in the field was evaluated by comparing the identities, relative abundances, and quantities of organic and inorganic contaminants accumulated by organisms exposed to dredged material in both laboratory and field studies. The organisms used were Mytilus edulis (a filter-feeding bivalve) and Nephtys incisa (a benthic polychaete). These organisms were exposed in the laboratory and in the field to a contaminated ... |
|
Reports by Keyword(s)
INORGANIC MATERIALS
