Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 53 for “"Simulants"”.
-
An investigation of blast wave transmission through rodent simulants
The most prevalent injuries incurred by today’s warfighters are traumatic brain injuries caused by exposure to explosively generated blast waves. The protection of soldiers is paramount, so research into the effect of blast waves on the brain and body has been ongoing so that more effective …
-
Cryogenic penetration and relaxation behavior of dry and icy lunar regolith simulants
… study aims to characterize two lunar regolith simulants using a specially-designed penetrometer at various conditions of temperature, pressure, density, and ice content. We measured penetration resistance and load-relaxation behavior for both dry simulants under constant displacement rate …
-
Mechanical behavior of tissue simulants and soft tissues under extreme loading conditions
… a solvent are presented as potential tissue simulants for ballistic applications, and compared directly to soft tissues from murine heart and liver. In addition to conventional quasistatic and dynamic bulk mechanical techniques that study macroscale elastic and viscoelastic properties, new …
-
Metal Oxide Nanoparticles: Optical Properties and Interaction with Chemical Warfare Agent Simulants
Materials with length scales in the nanometer regime demonstrate properties that are remarkably different from analogous bulk matter. As a result, researchers are striving to catalog the changes in properties that occur with decreasing size, and more importantly, understand the reason behind novel …
-
The Reactivity of Chemical Warfare Agent Simulants on Carbamate Functionalized Monolayers and Ordered Silsesquioxane Films
… of chemical warfare agents (CWAs) and CWA simulants on organic and oxide surfaces is not currently well understood, but is of substantial importance to the development of effective sensors, filters and sorbent materials. Polyurethane coatings are used by the armed forces as chemical agent …
-
Fundamental Studies of the Uptake and Diffusion of Sulfur Mustard Simulants within Zirconium-based Metal-Organic Frameworks
… vapors, specifically sulfur mustard (HD) simulants, and zirconium-based MOFs (Zr-MOFs). Utilizing a custom-built ultrahigh vacuum chamber with infrared spectroscopic and mass spectrometric capabilities, the adsorption mechanism, diffusion energetics, and diffusion kinetics of HD simulants …
-
Ultrahigh Vacuum Studies of the Fundamental Interactions of Chemical Warfare Agents and Their Simulants with Amorphous Silica
… The interactions of chemical warfare agent simulants, molecules which retain many of the same chemical or physical properties of the agent without the toxic effects, with amorphous silica were conducted to investigate how small changes in chemical structure affect the overall chemistry. …
-
Manufacture and characterization of sintered icy lunar regolith simulants, and implications for space resources and planetary science, The
… is presented. Then, novel icy lunar regolith simulants, Pressure Sintered icy lunar regolith Simulant (PSS), Thermally Sintered icy lunar regolith Simulant (TSS), and Vacuum Sintered icy lunar regolith Simulant (VSS) are characterized, both for their bulk mechanical properties and …
-
Computational Investigations at the Gas-Surface Interface: Organic Surface Oxidation and Hydrolysis of Chemical Warfare Agents and Simulants
… catalyst. We report similar mechanisms for the simulants dimethyl methylphosphonate and dimethyl chlorophosphate, though the latter may serve as a better simulant in studies of this type. Finally, an investigation of Sarin hydrolysis with solvated Cs8Nb6O19 shows an increase in the rate-limiting …
-
Developing a methodology for reducing diamond breakage within processing plant
… breakage of diamond host rock, ceramic diamond simulants and simulants embedded in the concrete blocks. This establishes a relationship between specific input energy and degree of breakage that can be used for size reduction to minimise diamond breakage. Ceramic diamond simulants have been used …
-
Interfacial Energy Transfer in Small Hydrocarbon Collisions with Organic Surfaces and the Decomposition of Chemical Warfare Agent Simulants within Metal-Organic Frameworks
… decomposition of chemical warfare agent (CWA) simulants on or within metal-organic frameworks (MOFs). The work presented here represents the first such study reported in with traditional surface-science based methods have been applied to the study of MOF chemistry. The mechanism and kinetics of …
-
The synthesis and characterization of alginate-melanin hydrogels for applications in forensic science
Skin simulants are essential in forensic research to investigate skin behavior at crime scenes. We present alginate-melanin hydrogels as candidate forensic skin simulants, characterizing their optical and mechanical properties. We investigated encapsulated and crosslinked hydrogel systems. …
-
Migration from non-ovenable food contact materials at elevated temperatures.
… food contact materials into aqueous and oil simulants, and to ensure that they conform to the implemented EC restrictions. Olive oil is a stipulated EC fatty food simulant, but it is unsuitable for specific migration analyses since it contains many interfering compounds. These could not be …
-
Computational Design of Viscoelastic Gels with Tunable Mechanical Energy Dissipation
… The physical instability of existing tissue simulants over long times and ambient temperatures has propelled interest in using polymer gel systems that could potentially mimic the mechanical response of tissues. More generally, the capacity to tune the mechanical energy dissipation …
-
Development of Multi-layer Films Containing Natural Antimicrobial Agents
… The stability of the AM coatings in various food simulants was also explored. In the film preparation, the AM coatings were embedded between low-density polyethylene (LDPE) layers to construct multilayer AM films. Investigation of the retention and subsequent release of the AM agent from …
-
Design and Construction of a High Vacuum Surface Analysis Instrument to Study Chemistry at Nanoparticulate Surfaces
… chemical warfare agents (CWAs) and their simulants. Nanoparticle activity depends on several factors including chemical composition, particle size, and support, resulting in a vast number of materials with potential applications in CWA decontamination. Current instrumentation in our …
-
Ion mobility and mass spectrometric investigations of organophosphates related to chemical warfare agents and pesticides
… the organophosphorus ester ions (CWA nerve gas simulants). The ITMS was used to perform isolation and fragmentation of the CWA simulants ions produced in the IMS. For the organophosphates dimethyl methylphosphonate, diethyl methylphosphonate and diisopropyl methylphosphonate, two ion mobility …
-
Computational modeling and simulation for projectile impact and indentation of biological tissues and polymers
… biological soft tissues and engineered polymer simulants is of great interest to predicting and preventing penetrative injuries. Detailed understanding of the mechanical processes at work could aid in the development and evaluation of protective strategies such as armor and helmets, and repair …
Page 1 of 3