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FireThe use of fireworks as a sign of celebration is a common practice in many countries. During the last few years, this sector has been subjected to various social criticisms that have even led to a ban on their use in different places.
David León +7 more
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Furoic acid-based (non)energetic plasticizers for solid composite propellants production [PDF]
Scientific Technical ReviewThis paper presents the development of high-performance energetic plasticizers based on furan-2,5-dicarboxylic acid (FDCA) as a renewable bio-material, resulting in bis(2-ethylhexyl) furan-2,5-dicarboxylate (FDC) and bis(1,3-diazidopropan-2-yl) furan-2,5-
Brzić Saša +5 more
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, 1978 Nitramine propellants without a pressure exponent shift in the burning rate curves are prepared by matching the burning rate of a selected nitramine or combination of nitramines within 10% of burning rate of a plasticized active binder so as to smooth ...
Cohen, N. S., Strand, L. D.
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Atomic Size Misfit for Electrocatalytic Small Molecule Activation
Advanced Functional Materials, EarlyView.This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong +3 more
wiley +1 more source
Advanced Functional Materials, EarlyView.The NNR‐n series of oligomeric nanographenes delivers exceptional emission performance. This work shows that this performance is originated by their ladder‐type structure, which effectively deactivates low‐frequency vibronic modes. This deactivation neglects the main pathway for non‐emissive deactivation, even in the near‐infrared region. The potential
Marcos Díaz‐Fernández +12 more
wiley +1 more source
Experimental Study of Pyrolysis and Laser Ignition of Low-Vulnerability Propellants Based on RDX
Molecules, 2020 Low-vulnerability propellants are propellants designed to resist unintended stimuli to increase safety during transport, storage and handling. The substitution of usual nitrocellulose-based gun propellants with these new materials allows maintaining ...
Jordan Ehrhardt +3 more
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Gain-Scheduled Control of Asymmetric Thrust Magnetic Bearing
Actuators, 2021 The thrust position of the magnetic levitation rotor can be changed, bringing convenience to the practical application of cold compressors. This paper derives the mathematical model of asymmetric thrust magnetic bearings for a cold compressor and ...
Shuyue Zhang, Jihao Wu
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Evolution of Earth-Lunar Transportation Systems [PDF]
, 1962 Space science - earth-lunar missions - high-energy propellants and nuclear propulsion systems in manned space ...
Koelle, H. H.
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Advanced Functional Materials, EarlyView.This work presents self‐propelled CRISPR/Cas9‐functionalized Au–MRs for rapid, amplification‐free, “on‐the‐fly” DNA detection. By harnessing motion‐assisted signal recovery, the platform achieved the limit of detection in low fM DNA concentrations, enabling detection across a wide dynamic range within only 5 min, which is significantly faster than any ...
Jyoti +3 more
wiley +1 more source
The Role of Thrusters in Space Systems [PDF]
فناوری در مهندسی هوافضا, 2020 Spacecrafts, such as artificial satellites and space probes have small rockets called thrusters for orbital maneuvering, and satellite attitude control. These thrusters produce thrust by exhausting gases from their nozzles.
Sajjad Hosseinzadeh alqoo +1 more
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