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Showing 1 to 14 of 14 for “"Reactive Material"”.
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Combustion dynamics of individual reactive material particles
Metallic reactive powders are widely used as solid fuels, pyrotechnic materials, and components of enhanced blast explosives. Metals are attractive because of their high combustion enthalpies and temperatures. Quantitative descriptions of the combustion processes and mechanisms for both pure metal …
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Treatment of contaminated sediments using reactive cap technology: Characterization and modeling of geotechnical, hydraulic and contaminant transport behavior of cap-sediment systems
<p>Reactive cap technology is a promising in-situ remediation solution for contaminated sediment, mainly because it has the potential to reduce costs and environmental impacts when compared to solutions that rely solely on dredging and disposal. Reactive capping mats have been recently used in …
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Initiation and ignition of nano-aluminum in Teflon
… using time-resolved laser spectroscopy. This reactive material has a stored energy of ~21 kJ cm-3, nearly twice the energy content of the best molecular explosives. Experiments investigated the fundamental combustion processes of initiation and ignition. Initiation occurs when the first bonds …
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Nanotermites multicamadas de Al/NiO sintetizadas por Magnetron Sputtering
… and pyrotechnics are known as energetic materials, which release a large amount of energy from a stimulus, which can be electric, mechanical, luminous, thermal, etc. The use of nanostructured reagents in thermally formed compositions leads to a higher degree of interaction between the …
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Theory and modeling of laser-driven flyer plate experiments to study explosives under a microscope
Studying liquid and solid high-explosive materials requires precise characterization of thermodynamics and chemical kinetics to capture the reactive behavior. Although high explosives have been studied for many decades, there is currently no reactive continuum scale model for characterizing …
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Explosive initiation of various forms of the Ti/2B energetic system
… over the weapon’s blast effects. Metal-based reactive materials (RM) are of interest because they will allow weapons to be tailored to suit certain applications. The combination of titanium and boron is a prime example of such a reactive material. The high temperatures and persistent fireball …
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An unbiased proteomic approach to identifying cell surface markers in neutrophils
… removal of inflammatory cargo and auto-reactive material. While many of the mechanisms involved in efferocytosis have been described, the critically important ‘apoptotic-cell-associated molecular patterns’ have yet to be identified. Methods: Human whole blood samples were obtained from …
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Optimization of Struvite Recovery Utilizing Magnesium Oxide
… with increasing MgO product reactivity. The most reactive MgO used, Timab AK98, showed 1-40% P removal and substantial decrease in solution saturation index immediately after dosing MgO to centrate. The slower P removal and decrease in saturation index observed with the less reactive material …
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The effects of case mass to charge mass ratio on aluminum-based structural energetic materials
… accelerate them to high speeds. Alternative case materials are being investigated to have a cased explosive that has similar or greater fragmentation damage while also contributing to the energy of the initial blast. Tests were conducted on three different aluminum based reactive materials and a …
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Reaction Rates For The Dehalogenation Of Trichloroethylene Using Various Types Of Zero-valent Iron
… extensively in the past decade as a subsurface reactive agent for the remediation of dense, nonaqueous-phase liquids (DNAPLs). Permeable reactive barrier walls (PRBW) have been installed at many sites around the country to treat contaminated plumes resulting from the presence of DNAPL pools. The …
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Explosive initiation of tungsten based reactive materials in air
… of evaluating the enhanced blast effect of reactive materials (RM’s) initiated by a high explosive detonation. High speed pressure, shadowgraph imaging, pyrometry and spectroscopy diagnostics were developed and used concurrently for tests conducted in these facilities. Well known thermite, …
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Detonation shock and ignition dynamics in condensed phase explosives
… with the limit of a compressible inert material and of a solid fully reactive material, such that the equation of state can be posed only in terms of mixture quantities and the reaction and compaction variables. We demonstrate the model's ability to capture deflagration to detonation …
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Custom engineered nanomaterials for energetics and energy applications
Recent interest in reactive material has shifted to more custom formulations targeting specific applications. In this work, preparation and characterization of nanomaterials used for several energetics and energy applications are addressed. The main challenge of this effort is to design and prepare …
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Analyse des Depots des Nitratumsatzes und dessen Heterogenität im quartären Grundwasserleiter des Wasserwerks Thülsfelde / Emsland - Berücksichtigung bei der Modellierung des Transportes
… und das für die Prozesse notwendige reaktive Material verteilt sind. Es ist bekannt, dass mikrobielle Reduktionsprozesse die effektivsten Nitratsenken sind. Diese Prozesse benötigen geeignete Reaktionspartner, die im Untergrund auch vorhanden sind, z.B. organischer Kohlenstoff oder …