Thermal Coating for Insensitive-Munitions Technologies

2007 ◽  
Author(s):  
Pauline Smith
Keyword(s):  
Insensitive Munitions ◽  
Thermal Coating

scholarly journals Evidence for Phytoremediation and Phytoexcretion of NTO from Industrial Wastewater by Vetiver Grass

Molecules ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 74
Author(s):  
Abhishek RoyChowdhury ◽  
Pallabi Mukherjee ◽  
Saumik Panja ◽  
Rupali Datta ◽  
Christos Christodoulatos ◽  
...  
Keyword(s):  
Stress Reduction ◽  
Industrial Wastewater ◽  
Plant Biomass ◽  
Ionization Mass ◽  
Vetiver Grass ◽  
Insensitive Munitions ◽  
Treatment Technologies ◽  
And Control ◽  
Near Future

The use of insensitive munitions such as 3-nitro-1,2,4-triazol-5-one (NTO) is rapidly increasing and is expected to replace conventional munitions in the near future. Various NTO treatment technologies are being developed for the treatment of wastewater from industrial munition facilities. This is the first study to explore the potential phytoremediation of industrial NTO-wastewater using vetiver grass (Chrysopogon zizanioides L.). Here, we present evidence that vetiver can effectively remove NTO from wastewater, and also translocated NTO from root to shoot. NTO was phytotoxic and resulted in a loss of plant biomass and chlorophyll. The metabolomic analysis showed significant differences between treated and control samples, with the upregulation of specific pathways such as glycerophosphate metabolism and amino acid metabolism, providing a glimpse into the stress alleviation strategy of vetiver. One of the mechanisms of NTO stress reduction was the excretion of solid crystals. Scanning electron microscopy (SEM), electrospray ionization mass spectrometry (ESI-MS), and Fourier-transform infrared spectroscopy (FTIR) analysis confirmed the presence of NTO crystals in the plant exudates. Further characterization of the exudates is in progress to ascertain the purity of these crystals, and if vetiver could be used for phytomining NTO from industrial wastewater.

Bacteria Make a Living Breathing the Nitroheterocyclic Insensitive Munitions Compound 3-Nitro-1,2,4-triazol-5-one (NTO)

2021 ◽  
Author(s):  
Camila L. Madeira ◽  
Osmar Menezes ◽  
Doyoung Park ◽  
Kalyani V. Jog ◽  
Janet K. Hatt ◽  
...  
Keyword(s):  
Insensitive Munitions

scholarly journals Sequential anaerobic-aerobic biodegradation of emerging insensitive munitions compound 3-nitro-1,2,4-triazol-5-one (NTO)

Chemosphere ◽  
2017 ◽  
Vol 167 ◽  
pp. 478-484 ◽  
Author(s):  
Camila L. Madeira ◽  
Samuel A. Speet ◽  
Cristina A. Nieto ◽  
Leif Abrell ◽  
Jon Chorover ◽  
...  
Keyword(s):  
Aerobic Biodegradation ◽  
Insensitive Munitions

scholarly journals Modification of gas-thermal coatings surface by continuous-generation laser radiation

2018 ◽  
Vol 226 ◽  
pp. 01015
Author(s):  
Evgeniy A. Chaschin ◽  
Konstantin I. Kurganov ◽  
Andrey A. Mitrofanov ◽  
Andrey H. Kharakhashev ◽  
Mikhail M. Klimov
Keyword(s):  
Image Processing ◽  
Laser Radiation ◽  
Laser Treatment ◽  
Quantitative Assessment ◽  
Ceramic Coating ◽  
Initial Position ◽  
Average Porosity ◽  
Processing Program ◽  
Continuous Generation ◽  
Thermal Coating

The results of the researches which determine the dependence of gas-thermal coating porosity on the laser radiation parameters are given in the article. The coatings which are based on the metallic (PN-85-U-15) and non-metallic (Al2O3) components were analyzed. The quantitative assessment of porosity modification were realized by means of the based on Visual Studio 2008 program. This image processing program allows to compare the microstructure of the occupied by pores and coating material areas pixel-by-pixel. It has been established that the action of laser radiation leads to reduction of average porosity of gas-thermal coating. This reduction is: 1. the porosity in the initial position for coating of a PN 85-U-15-based alloy is 17%; after the laser treatment it’s 5-8%; 2.- the porosity in the initial position for ceramic coating of Al2O3is 24,5%; after the laser treatment it’s 15-18%.

scholarly journals Identifying degradation products responsible for increased toxicity of UV-Degraded insensitive munitions

Chemosphere ◽  
2020 ◽  
Vol 240 ◽  
pp. 124958 ◽  
Author(s):  
Lee C. Moores ◽  
Alan J. Kennedy ◽  
Lauren May ◽  
Shinita M. Jordan ◽  
Anthony J. Bednar ◽  
...  
Keyword(s):  
Degradation Products ◽  
Insensitive Munitions
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