Results 161 to 170 of about 446,826 (283)

Spatiotemporal Emission Characteristics and Driving Factors of Air Pollutants and CO₂ from Aircraft at Airports: A Case Study in China. [PDF]

Toxics
Li Y, Zhang M, Zhang Y, Han Z, Chen J, Liu Y, Liu R, Xu J, Niu Y, Hao W, Ma W, Li W.   +11 more
europepmc   +1 more source

Detection of Molecular High Explosives in Post‐detonation Residue: Environmental Persistence of Days to Months

Propellants, Explosives, Pyrotechnics, EarlyView.
Atmospheric flow tubemass spectrometry detects trace RDX residue in soil and dust collected days to months after large explosive detonations. Post‐detonation soil samples contain detectable RDX aligned with prevailing wind direction and generally decreasing over weeks, while dust and soil samples still show picogram‐level RDX months later, providing ...
Elizabeth H. Denis, Robert G. Ewing, Garret L. Hart, Megan K. Nims, Kelsey A. Morrison, Shannon E. Schrader, Brandy N. Gartman, Michael P. Foxe, Christine Johnson   +8 more
wiley   +1 more source

Spatially distributed complex organic matter detected in an ancient river valley in Jezero crater, Mars. [PDF]

Sci Adv
Murphy AE, Uckert K, Hand KP, Bhartia R, Bykov SV, Hickman-Lewis K, Jakubek RS, Lee C, McCubbin FM, Minitti ME, Pascuzzo A, Siljeström S, Sharma S, Steele A, Williford KH, Abbey W, Asher SA, Barnes R, Barr PA, Bell JF, Beyssac O, Bosak T, Bramble MS, Brown A, Broz AP, Buckner D, Cardarelli EL, Carsten JL, Corpolongo A, Czaja A, Edgington SGC, Ehlmann BL, Farley KA, Fornaro T, Fries M, González-Burgos R, Gupta S, Haney NC, Hug W, Huggett J, Hurowitz JA, Imbeah S, Clark J, Jones AJ, Kah LC, Kennedy MR, Lee SW, Maki J, Nixon B, Núñez JI, Osterhout JT, Phelan ND, Phua YY, Ravine MA, Hollis JR, Scheller E, Schulte MD, Sephton MA, Simon JI, Srivastava A, Stack KM, Van Beek J, Weiss BP, Wiens R, Williams AJ, Wogsland BV, Yingst RA.   +66 more
europepmc   +1 more source

Optimizing Ball‐Milled Composites for Fast Energy Release Under Shock Compression

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Microparticle additives containing both Al fuel and oxidizer, fabricated by arrested reactive milling (ARM), could potentially increase the power of energetic materials such as HMX because they contain premixed fuel and oxidizer. Optimizing shock reactivity requires exploring a vast parametric space encompassing composition, milling parameters
Siva Kumar Valluri, Edward L. Dreizin, Dana D. Dlott   +2 more
wiley   +1 more source

Electronic properties of poly (triazine imide) distance-controlled of the NH and BH substitutions and their impacts on the photocatalytic descriptors. [PDF]

J Mol Model
Faria LCS, Brum BM, Queiroz LMSV, Silva JRC, Machado FBC, Ueno LT, Ferrão LFA.   +6 more
europepmc   +1 more source

Condensing the Cage: Novel Insights Into the Reaction Pathway of Isowurtzitane Cage Formation

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT In this contribution, we propose an alternative reaction pathway for the formation of isowurtzitane cages. These cage products are the basis for the synthesis of CL‐20, a highly prized energetic material and propellant. Isowurtzitane cages are typically formed under acid‐catalysed conditions via the condensation reaction between glyoxal and ...
Campbell S. Wolfe, Patrick F. N. Stewart, Rory M. Campbell, James R. White, Alison M. Beardah, Justin Fellows, Thomas Wirth   +6 more
wiley   +1 more source

Space radiation impairs long-term endothelial integrity and may promote atherosclerosis in ApoE-deficient mice. [PDF]

Clin Transl Med
Xu Y, Jarrah S, Zhang S, Khlgatian MK, Brojakowska A, Du Y, Eskandari A, D'Escamard V, Kovacic JC, Goukassian DA.   +9 more
europepmc   +1 more source

Machine Learning for Thermodynamic States of Notional Nonideal Energetic Mixtures

Propellants, Explosives, Pyrotechnics, EarlyView.
. ABSTRACT Currently, modeling the thermodynamic states in the reaction zone of a detonating energetic mixture entails iteratively solving a set of coupled differential equations that require detailed material property information or models whose empirical parameters must be physically measured.
Sangeeth Balakrishnan, Jesse Hearn, Francis G. VanGessel, Brian C. Barnes, Ruth Doherty, William Wilson, Ryan Ciufo, Peter W. Chung   +7 more
wiley   +1 more source

The Winds of Change in Aeronautics

, 1965
Some exciting innovations in aeronautics may have far-reaching effects on ...
Lissaman, Peter
core  

Physics-constrained multimodal reinforcement learning for local UAV Navigation in complex static obstacle environments. [PDF]

Sci Rep
Tian Y, Chen Y, Deng Z, Yang H, Wen X, Jiang T, Wu Y.   +6 more
europepmc   +1 more source