Desert varnish is the dark coat of clay and ferromanganese oxides developed on exposed rock surfaces in arid regions. It forms from the accretion of material from windblown dust. The distribution of desert varnish was mapped in Arizona. It was discovered that desert varnish could be mapped on a regional scale. Well developed desert varnish is common on stable rock surfaces in areas having alkaline soils and less than about 25 cm of annual precipitation. Rock surfaces in areas having more than...
Topics: NASA Technical Reports Server (NTRS), ARIZONA, DESERTS, EROSION, MOISTURE CONTENT, RAIN EROSION,...
The role of chemical electrochemical reactions at the coating/metal interface in the region of a cathodic disbond in degrading adhesion of organic coatings to steel has been studied using scanning acoustic microscopy, wetting analysis and x-ray photo-electron spectroscopy (XPS). The results show that cathodic polarization accelerates adhesion loss by the combined effects of a shift in the zeta potential of the steel substrate and build-up of an alkaline sodium hydroxide electrolyte that...
Topics: DTIC Archive, Kendig, M, ROCKWELL INTERNATIONAL CORP THOUSAND OAKS CA SCIENCE CENTER, *COATINGS,...
The Applied Technology Department at the Indian Head Division, Naval Surface Warfare Center and Shaw Environmental, Inc., have just successfully completed a field demonstration of in situ bioremediation of a groundwater aquifer contaminated with perchlorate. Using a recirculation cell design, naturally occurring microorganisms were stimulated to degrade perchlorate by injecting a food source (lactate) and neutralizing the groundwater acidity with a carbonate buffer. Starting with perchlorate...
Topics: DTIC Archive, Cramer, Randall J, NAVAL SURFACE WARFARE CENTER INDIAN HEAD DIV MD, *CHEMICAL...
An apparatus that includes highly miniaturized thin-film electrochemical sensor array has been demonstrated as a prototype of instruments for simultaneous detection of multiple substances of interest (analytes) and measurement of acidity or alkalinity in bioprocess streams. Measurements of pH and of concentrations of nutrients and wastes in cell-culture media, made by use of these instruments, are to be used as feedback for optimizing the growth of cells or the production of desired substances...
Topics: NASA Technical Reports Server (NTRS), BIOPROCESSING, DETECTION, FABRICATION, MINIATURIZATION, THIN...
A multihundred kilowatt Regenerative Fuel Cell for use in a space station is envisioned. Three 0.508 sq ft (471.9 cm) active area multicell stacks were assembled and endurance tested. The long term performance stability of the platinum on carbon catalyst configuration suitability of the lightweight graphite electrolyte reservoir plate, the stability of the free standing butyl bonded potassium titanate matrix structure, and the long life potential of a hybrid polysulfone cell edge frame...
Topics: NASA Technical Reports Server (NTRS), CYCLIC LOADS, FUEL CELLS, SERVICE LIFE, SPACE STATIONS,...
The Naval Research Laboratory (NRL) 6.1 Core Program 'Sediment Geochemical Processes' participated in field experiments in the Baltic Sea near Eckernfoerde Germany during May 1993 in conjunction with the NRL Coastal Benthic Boundary Layer Special Research Project. Samples from box cores BC244 ('APL-2/ Stanic-towers' site) and BC250 (Mittelgrund area) were analyzed for water content, average grain density, and grain size distribution. Porosity, void ratio, and wet bulk density were calculated...
Topics: DTIC Archive, Fischer, Kathleen M, NAVAL RESEARCH LAB STENNIS SPACE CENTER MS, *ENVIRONMENTAL...
Data from several sources were collated and analyzed by correlation, regression, and principal components analysis to define surrogate variables for use in the brook trout (Salvelinus fontinalis) habitat suitability index (HSI) model, and to evaluate the applicability of the model for assessing habitat in high-elevation streams of the southern Blue Ridge Province (SBRP). In all data sets examined, pH and alkalinity were highly correlated. Our major objective was to explore relations among these...
Topics: DTIC Archive, Schmitt, Christopher J., FISH AND WILDLIFE SERVICE COLUMBIA MO NATIONAL FISHERIES...
The object of this study was to explore the detergency and physical characteristics of soak alkaline cleaning compounds containing amphoteric surfactants; to determine whether such compounds could be developed that would be satisfactory Fed. Spec. P-C-436a cleaners. Using the test procedures of P-C-436a, an investigation was make of alkaline cleaners containing amphoteric surfactants of the quaternary imidazolium hydroxide type. Compounds containing the amphoteric surfactant as the only...
Topics: DTIC Archive, Mankowich, A, COATING AND CHEMICAL LAB ABERDEEN PROVING GROUND MD, *AMPHOTERIC,...
LONG-TERM GOALS: The long-term goals are to assess controls on nutrient limitation of biological productivity in the coastal ocean, to identify those processes which control supply of bioavailable nutrients to the coastal ocean, and to critically examine which nutrient(s) limit biological productivity in the coastal ocean. OBJECTIVES: Specific objectives this year were to (1) complete the summer and winter cruises to the Eel River Shelf plus the coupled river sampling component, (2) process...
Topics: DTIC Archive, WOODS HOLE OCEANOGRAPHIC INST MA DEPT OF MARINE CHEMISTRY AND GEOCHEMISTRY, *AQUATIC...
The silver oxide-zinc alkaline primary cell consists of a negative electrode of zinc, a positive electrode of silver peroxide, and an alkaline electrolyte (generally a potassium hydroxide solution). During discharge, the silver peroxide in the positive electrode is reduced to metallic silver and the metallic zinc in the negative electrode is oxidized either to zinc oxide or to a complex zincate ion. The reactions involved have not been fully determined and may prove to be fairly complex....
Topics: DTIC Archive, Shepherd, C M, NAVAL RESEARCH LAB WASHINGTON DC, *ZINC OXIDES, *SILVER, *ALKALINITY,...
This is a fundamental science project relevant to ethanol fuel cells (DEFCs). We studied ethanol electrooxidation (EOR) on polycrystaline platinum in acidic and alkaline media. The method used was the broadband sum-frequency generation (BB-SFG) spectroscopy that we connected to the solid/liquid interfacial research for the first time. In both alkaline and acidic media we monitored oxidation of isotopically labeled ethanol ((12)CH(3)-(13)CH(2)OH). Surface-adsorbed (12)CO and (13)CO were observed...
Topics: DTIC Archive, ILLINOIS UNIV AT URBANA-CHAMPAIGN, *CATALYSIS, *ETHANOLS, *FUEL CELLS, *SPECTROSCOPY,...
Topics: DTIC Archive, BOEING CO ST LOUIS MO, *ALUMINUM, *METAL COATINGS, *SPUTTERING, ALKALINITY, CADMIUM,...
Rotating biological contactor (RBC) units were operated as four-stage or single-stage processors at a hydraulic loading rate of 2.0 gpd/sq ft. The removal of total organic carbon (TOC) and ammonia nitrogen was similar in all operational configurations. The biomass was thick and gray in the first stage of the four-stage RBC and corresponded to a dissolved oxygen concentration ranging from 0.6 to 1.2 mg/L. The single-stage RBC had dissolved oxygen concentrations ranging from 1.9 to 3.2 mg/L. When...
Topics: DTIC Archive, Noss,C I, ARMY MEDICAL BIOENGINEERING RESEARCH AND DEVELOPMENT LAB FORT DETRICK MD,...
Water sterilizing tablets were evaluated for efficiency of kill of micro-organisms, effect of inhibitors and palatability. The effect of long term use is discussed. The water sterilizing tablet recommended for disinfection of personal drinking water, on the basis of these trials is the Potable Aqua tablet. The Afses is not recommended because of its need for a quiescent period. The Puritabs is not recommended because of its inability to achieve the required 99.9% kill in heavily contaminated...
Topics: DTIC Archive, Thomson,G F, ARMED FORCES FOOD SCIENCE ESTABLISHMENT SCOTTSDALE (AUSTRALIA),...
The illitization process of Fe-rich smectite (nontronite NAu-2) promoted by microbial reduction of structural Fe(1*) was investigated by using a thermophilic metal-reducing bacterium, Thermoanaerobacter ethanolicus, isolated from the deep subsurface. T. ethanolicus was incubated with lactate as the sole electron donor and structural Fe(1*) in nontronite as the sole electron acceptor, and anthraquinone-2, 6- disulfonate (AQDS) as an electron shuttle in a growth medium (pH 6.2 and 9.2, 65 deg C)...
Topics: DTIC Archive, NAVAL RESEARCH LAB STENNIS SPACE CENTER MS SEAFLOOR SCIENCES DIRECTORATE, *CHEMICAL...
A primary goal of this study is to obtain a robust predictive capability for the occurrence of rich cnidarian (primarily scleractinian coral) hard ground communities in the deep Gulf of Mexico (GoM). To achieve this long-term goal, this study will accomplish three interrelated and interdependent objectives.
Topics: DTIC Archive, TDI-BROOKS INTERNATIONAL COLLEGE STATION TX, *CORAL REEFS, *DEEP WATER, *HABITATS,...
Traditionally, the density of seawater as a function of temperature and salinity at atmospheric pressure has been discussed in terms of the density function, Sigma-T, and, in this report, some simplified mathematical relationships are presented from which changes in Sigma-T can be predicted from changes in temperature and salinity. However, density is also affected by pressure and an accurate treatment of the density of seawater within a deep ocean water mass requires a more sophisticated...
Topics: DTIC Archive, Whelan,Daniel J, MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA), *DENSITY, *SEA...
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Feb 22, 2015
02/15
by
Barney Paul Popikin
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Large areas of farmland in tropical and semi-tropical low-lying, coastal areas like the southeast Pakistani Sindh, and arid and semi-arid areas like the Egyptian Nile River Basin, are well known to suffer from soil-water logging and soil salinization. Typically, these reduce the economic vitality of irrigated agriculture by reducing crop yields and quality as crops grow best in soils balanced with air, neutral or near-neutral water, and stable soil matrices. Water-logged soils reduce the needed...
Topics: Soil water logging, soil salinization, irrigated agriculture, crop production, balanced soils,...
Energetic compounds, such as 2,4,6-trinitrotoluene (TNT), 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-catalyzed hydrolysis degrades nitroaromatics and nitramines, and the potential effectiveness of this reaction in soil has been demonstrated at both bench and pilot scales. This report evaluates the potential for soil bacteria to degrade the transformation...
Topics: DTIC Archive, Felt, Deborah R, ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS,...
The electrocatalytic properties of iron tetrapyridino porphyrazine FeTPyPz for the reduction of O2 in alkaline media have been examined with cyclic voltammetry and rotating ring disk techniques. Four distinct redox peaks are observed in the absence of O2 in solution for this material adsorbed at monolayer coverages on ordinary pyrolytic graphite surfaces. The onset for O2 reduction appears to coincide with the voltammetric peak associated with the metal centered Fe(II) TPyPz/Fe(III)TPyPz...
Topics: DTIC Archive, Tanaka, A A, CASE WESTERN RESERVE UNIV CLEVELAND OH, *OXIDATION REDUCTION REACTIONS,...
This review of the literature indicates that iodine is not completely effective in destroying Giardia especially in cold (3 to 15C) water. Cysticidal efficacy of iodine at a given concentration and temperature depends on contact time. The iodine tablet, Globaline, used by U.S. Military Forces since 1952, required 60 minutes at 15C, 30 minutes at 25C and 25 minutes at 45C for 100% destruction of Giardia cysts at residual iodine concentration of 10, 8, and 6 mg per liter, respectively. The time...
Topics: DTIC Archive, Powers, Edmund M, ARMY NATICK RESEARCH DEVELOPMENT AND ENGINEERING CENTER MA,...
Relative alkaline phosphatase (AP) activity and isoelectric point (pI) values of AP isoenzymes were determined for a variety of rat tissues. Prepared tissue samples were placed on polyacrylamide gel and were subjected to isoelectric focusing (IEF). The gel was stained for AP and the intensity of staining was found to relate to the measured biochemical AP activity. (Author)
Topics: DTIC Archive, Finley,Stephen L, ARMY INST OF DENTAL RESEARCH WASHINGTON DC, *PHOSPHATASES,...
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Nov 26, 2014
11/14
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YADAV JANESHWAR 1, PATHAK R.K. 2 and YADAV ANKIT
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The water quality is an index of health and is one of the area of major concern to environmentalists, since industrilisation, urbanization and modern agriculture practices have a direct impact on the water resources. The investigation was carried out to study the water as well as locked soil of segwal reservoir of Badwani, M.P. India. The change in physico chemical parameters of water such as water temperature, ph, turbidity, transparency, total hardness, Ca hardness, Mg hardness, alkalinity,...
Topics: Physico-chemical parameters, locked soil, chloride content, alkalinity, hardness, plasticity.
In 1973, the TVA requested petrographic examination of several concrete cores from Fontana Dam located in North Carolina to determine whether an alkali-silica reaction had occurred. A petrographic examination was made, and the results of it showed that there was evidence of alkali-silica reaction. While the evidence of reaction was conventional (gel, rims on aggregate particles, cracks), the type of aggregate was not variously described as quartzite or feldspathic muscovite schist or...
Topics: DTIC Archive, Buck,Alan D, ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB,...
In mineral exploration, the ability to distinguish and map petrochemical variations of magmatic rocks can be a useful reconnaissance tool. Alkalinity is one such petrochemical parameter and is used in the characterization of granitoid rocks. In quartz normative plutonic rocks, alkalinity is related to the composition and abundance of feldspars. Together with quartz abundance, knowledge of feldspar modes allows the classification of these igneous rocks according to the Streckeisen diagram....
Topics: NASA Technical Reports Server (NTRS), ALKALINITY, CLASSIFICATIONS, GEOLOGICAL SURVEYS, INFRARED...
One of the areas we investigated for new superconductors is reduced oxides of niobium, One unusual synthesis approach to prepare these materials has been ion exchange reactions and another has been quenching reactions from very high temperatures. Many reduced niobium oxides in A-Nb-O ternary systems where A is an alkaline or alkaline earth metal have been reported. Some examples are LiNb02 (1), NaNbl0018 (2,) BaNb80i4 (3), Ba2Nbi5032 (4) and Ca0.75Nb306 (5). Some of strongly reduced niobates...
Topics: DTIC Archive, Sleight, Arthur W., OREGON STATE UNIV CORVALLIS DEPT OF CHEMISTRY, *SYNTHESIS,...
Experimental methods have been developed and validated which will permit us to: 1) measure leakage of tissue enzymes (ALT, CPK, Alkaline phosphatase, LDH) during heat exposure in rats; 2) measure lithium concentrations in plasma using atomic absorption spectrophotometry; 3) measure total body water, extracellular fluid space, and intravascular fluid space in rats; 4) passively heat restrained rats and record changes in rectal temperature. Our objectives for future work include: 1) learn methods...
Topics: DTIC Archive, Zeisel, Steven H, BOSTON UNIV MA SCHOOL OF MEDICINE, *BIOCHEMISTRY, *HEAT...
Based on the Phase I research results, we identified that carbon supported Pd-based catalysts, such as Pd/C and PdRu/C, had better electrocatalytic activity toward the ethanol oxidation reaction (EOR) than Pt-based catalysts. However, the selective C-C bond cleavage in the EOR on the Pd-based catalysts, leading to carbon dioxide, was not a major reaction pathway. During this research period, we aim to study the EOR activity and selectivity on Pt based catalysts with and without Pb(IV)...
Topics: DTIC Archive, TREMONT TECHNOLOGY LLC FISHERS IN, *DIRECT METHANOL FUEL CELLS, *ELECTROCATALYSTS,...
The objective of this study was to modify and optimize US Army Element, Assembled Chemical Weapons Alternatives (USAE ACWA) method BGCAPP-204 (VX in Caustic Hydrolysate by Cool on-Column GC/MS) for analysis of ethyl S-2-diisopropylaminoethyl methylphosphonothiolate (VX) in acidified VX hydrolysate matrices. The modified procedures included the injection of VX spikes directly to the acidified hydrolysate samples and the use of an alkaline buffer (pH approximately 12) to adjust the samples to a...
Topics: DTIC Archive, EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND MD, *MASS SPECTROMETRY,...
Swine have been used as a model for assessing the effects of exposure to T-2 toxin. Acute T-2 toxicosis is a cardiovascular shock syndrome characterized by reductions in cardiac output and blood pressure, and increased plasma concentrations of epinephrine, norepinephrine, thromboxane B2, 6-keto-PGF 1 alpha, and lactate. An initial leukocytosis is followed by a leukopenia. Serum bound calcium concentrations decrease while magnesium, phosphorus and potassium increase. Blood flow to the heart,...
Topics: DTIC Archive, Buck, William B, ILLINOIS UNIV AT URBANA COLL OF VETERINARY MEDICINE, *IMMUNOLOGY,...
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Topics: habitat specifity, alkalinity, Potamogetonaceae, Potamogeton
A mechanistic model has been developed which for the first time considers the effect of hydrogen entry into a metal on the kinetics of the hydrogen evolution reaction (h.e.r.). The model enables computation of: 1) the hydrogen surface coverage and surface concentration; 2) the hydrogen adsorption, absorption, discharge and recombination rate constants; and 3) the h.e.r. coverage-dependent transfer coefficient, alpha and the exchange current density io, from a knowledge of the steady state...
Topics: DTIC Archive, Pickering, Howard W, PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF MATERIALS...
The Department of Defense (DOD) has used perchlorate (ClO4) as an oxidizer in ordnance items and rocket motors for over half a century. This very water soluble and environmentally persistent compound now contaminates drinking water for tens of millions of people in the United States. In 2002, the United States Environmental Protection Agency (EPA) released a provisional perchlorate oral reference dose (RfD), which translated into a drinking water equivalent level of 1 part per billion (ppb)....
Topics: DTIC Archive, ENVIRONMENTAL SECURITY TECHNOLOGY CERTIFICATION PROGRAM ALEXANDRIA VA, *ION EXCHANGE,...
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Mar 31, 2015
03/15
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DJ Shy John
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Gardening For Life 3/26/15 George Patton Current Events Farm shift in China Native Seeds Search catalog www.nativeseeds.org GMO corn Companion Planting Nurse Plants Ground Cover Plants Trellis Plants Dynamic Plants Nitrogen Fixing Plants Nitrogen and soil Composting chemistry Fighting alkalinity Weeds are not all bad The Secret Life of Plants, Secrets of the Soil both by Peter Tompkins TWO VERSIONS: The short file has abbreviated music, the longer file keeps all music intact...
Topics: killradio, George Patton, Gardening For Life, Permaculture, Companion Plants, Nitrogen, Composting,...
We are developing a laser engineering approach to fabricate and optimize various types of alkaline microbatteries. Microbattery cells are produced using a laser forward transfer process that is compatible with the materials required to make the anode, cathode, separator and current collectors. The use of an ultraviolet transfer laser (wavelength = 355 nm, 30 ns FWHM) enables other operations such as surface processing, trimming and micromachining of the transferred materials and substrate and...
Topics: DTIC Archive, Arnold, Craig B., Pique, Alberto, NAVAL RESEARCH LAB WASHINGTON DC MATERIAL SCIENCE...
A biogeochemical cycle model resolving ocean carbon and alkalinity content is applied to the Maestrichtian and Danian. The model computes oceanic concentrations and distributions of Ca(2+), Mg(2+), and Sigma-CO2. From these values an atmospheric pCO2 value is calculated, which is used to estimate rates of terrestrial weathering of calcite, dolomite, and calcium and magnesium silicates. Metamorphism of carbonate rocks and the subsequent outgassing of CO2 to the atmosphere are parameterized in...
Topics: NASA Technical Reports Server (NTRS), ALKALINITY, BIOGEOCHEMISTRY, CHEMICAL COMPOSITION, ION...
This report discusses the dust storms that periodically rise from playas at Owens and Mono Lakes in California, the causes and effects of these storms, and some treatments to alleviate the problem.
Topics: DTIC Archive, Saint-Armand, Pierre, NAVAL WEAPONS CENTER CHINA LAKE CA, *DUST STORMS, *PLAYAS,...
The behavior of hydrazine, 1,1-dimethylhydrazine (known also as unsymmetrical dimethylhydrazine, UDMH), Aerozine-50, and monomethylhydrazine (MMH) in hard and soft water was studied prior to evaluating their effects on aquatic organisms. Hard and soft water propellant solutions were examined over a 96-hour period for changes in physical characteristics, phenolphthalein and total alkalinity, pH, specific conductance, EDTA hardness, and dissolved oxygen (DO). All four compounds at low...
Topics: DTIC Archive, Slonim, Arnold R., AIR FORCE AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH,...
An automated crossflow filtration process using a ceramic membrane was evaluated for recycling spent alkaline cleaners generated from closed cabinet aqueous parts washers. Two field tests conducted at Naval Air Weapons Station Point Mugu, California, and the Naval Facilities Engineering Service Center, Port Hueneme, California, demonstrated an 80% removal of accumulated oil and grease from spent cleaners after recycling. The Mobile Alkaline Cleaner Recycler also demonstrated an 88% volumetric...
Topics: DTIC Archive, Speceal, Aviva, NAVAL FACILITIES ENGINEERING SERVICE CENTER PORT HUENEME CA,...
A series of studies of the effects of solutes which appear in natural aqueous environments, specifically Mg and Al, under controlled conditions, permit characterization of the retardation of silicate glass leaching in water containing such solutes. In the case of Mg the interaction with the glass appears to consist of exchange with alkali ions present in the glass to a depth of several microns. The effect of Al can be observed at much lower levels, indicating that the mechanism in the case of...
Topics: NASA Technical Reports Server (NTRS), ALUMINUM, AQUEOUS SOLUTIONS, CORROSION RESISTANCE, LEACHING,...
Periods of population influxes during winter recreation occur simultaneously with periods of extreme low flow in many Rocky Mountain areas. The ability of streams to assimilate additional nutrient loading is reduced by the low-flow conditions. Low-flow water-quality characteristics of the Slate and East Rivers which drain the Crested Butte area were investigated in December 1996. Six sites were chosen for evaluation four on the Slate River and two on the East River to assess water-quality...
Topics: DTIC Archive, Spahr, Norman E, GEOLOGICAL SURVEY DENVER CO, *WINTER, *WATER QUALITY, NUTRIENTS,...
The lead (Pb) content of concrete is often a concern to project managers and environmental regulators. Waste reduction policies give an incentive to limit landfilling of demolition debris, but many material recycling scenarios involve some environmental exposure to crushed concrete. This work observed a demolition project to investigate relative Pb concentrations and solubility of Pb in runoff water. Painted walls were sampled before demolition; mass of concrete was calculated; and a projected...
Topics: DTIC Archive, CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL, *CONCRETE, *ENVIRONMENTAL...
This study compares the chemical resistance of four less commonly used materials for casing groundwater monitoring wells: acrylonitrile butadiene styrene (ABS), fluorinated ethylene propylene (FEP), fiberglass-reinforced epoxy (FRE), and fiberglass-reinforced plastic (FRP), with two more commonly used casing materials: polyvinyl chloride (PVC) and polytetrafluoroethylene (PTFE). The six materials were exposed to 28 neat organic compounds (including one acid) and to extremely acidic and alkaline...
Topics: DTIC Archive, Ranney, Thomas A., COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *FIBERGLASS,...
Shock-absorbing concrete (SAC ON) is a low-density, fiber-reinforced, foamed concrete that is used as an energy absorbing material. SACON has found wide applications in the construction of live-fire training villages and the fabrication of target structures. SACON is manufactured by blending sand, portland cement, and water with an aqueous-based foam and a steel or polymer fiber. Typically the resulting concrete will have a density that is approximately one-half that of conventional concrete...
Topics: DTIC Archive, Fabian, Gene L., O'Donnell, Richard H., Tom, Joe G., Malone, Philip G., ARMY...
It is the objective of this project to establish the molecular details of the corrosion-induced loss of adhesion of organic films from steel. Scanning acoustic microscopy (SAM) has allowed observation of the microscopic details of the attack of cathodic corrosion products on a model organic coating on steel. Attack of the polymer by the alkaline corrosion products occurs at numerous localized regions resulting in the mechanical degradation of the coating/metal interface. Acoustic microscopy has...
Topics: DTIC Archive, Kendig, M, ROCKWELL INTERNATIONAL CORP THOUSAND OAKS CA SCIENCE CENTER, *COATINGS,...
The overall objective of this project is the development of new Tc-99m-labeled steroids that can be used for single photon imaging of estrogen responsive breast cancer. The technical aims for the initial period involved preparation and characterization of an initial series of functionalized estradiols, their evaluation as ligands for the estrogen receptor, and initial conversion to the corresponding rhenium tricarbonyl derivatives. We have successfully undertaken these specific aims. We have...
Topics: DTIC Archive, Hanson, Robert N, NORTHEASTERN UNIV BOSTON MA, *BREAST CANCER, COUPLING(INTERACTION),...
The degradation of the Chemical Warfare Agent sulfur mustard, bis(2-chloroethyl) sulfide, and the half-mustard simulant, 2- chloroethyl phenyl sulfide was studied on ambient and moist concrete using 13C solid-state magic-angle-spinning nuclear magnetic resonance (SSMAS NMR). Two samples of concrete made by the same formulation, but differing in age and surface alkalinity, were used. The 2-chloroethyl phenyl sulfide hydrolyzed to form the 2-hydroxyethyl phenyl sulfide, which then formed the...
Topics: DTIC Archive, Brevett, Carol A, SCIENCE APPLICATIONS INTERNATIONAL CORP (SAIC) ABINGDON MD,...
The primary objective of this research was to develop thermally stable dioxetanes which could be chemically and enzymatically triggered to provide efficient chemiluminescence in aqueous solution.
Topics: DTIC Archive, Schaap, A. P., WAYNE STATE UNIV DETROIT MI DEPT OF CHEMISTRY, *SUBSTRATES,...
The biodegradability of triaminoguanidine nitrate was determined under a variety of environmental conditions. Supplemental carbon was required in order for biodegradation to occur under aerobic or anaerobic conditions. Although triaminoguanidine nitrate is biodegraded under both aerobic and anerobic conditions, the nitrate portion of the salt will only degrade anaerobically (denitrification). The alternate carbon is required for this process as well. Triaminoguandine nitrate was found to be...
Topics: DTIC Archive, Kaplan, D. L., ARMY NATICK RESEARCH AND DEVELOPMENT CENTER MA, *WATER TREATMENT,...
This report offers solutions for scaling, corrosion, and fouling problems in cooling tower systems at Army and Air Force installations. These problems are caused by dissolved minerals in the water and growth of algae or slime within the system. The scaling product (SP) of cooling tower water can be expressed as a product of the calcium hardness (Ca) and alkalinity (M) expressed as CaCO3. The SP of water at major U.S. Army Training and Doctrine Command and U.S. Army Forces Command installations...
Topics: DTIC Archive, Lane,R, CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL, *MILITARY...
