Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Igor Altman"'
Publikováno v:
Applications in Energy and Combustion Science, Vol 16, Iss , Pp 100230- (2023)
A calibration-free multi-color pyrometry data analysis approach for determining the temporal change in the reciprocal temperature by only comparing the photomultiplier tube (PMT) responses to the system light emission is introduced. For Arrhenius rea
Externí odkaz:
https://doaj.org/article/15607996cdfb4e7fa5da3837b8fdcd24
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-7 (2022)
Abstract The paper deals with the gas-phase formation of nanoparticles that is a fundamental process responsible for the condensed matter in the Universe, which also attracts attention due to its involvement in the particle synthesis for various nano
Externí odkaz:
https://doaj.org/article/df55de66ca244b96a10a62c152fc1be1
Publikováno v:
Case Studies in Thermal Engineering, Vol 43, Iss , Pp 102809- (2023)
Metal combustion is a process accompanied by strong light emission. Correspondingly, radiative loss can significantly affect the overall energy balance, and needs to be considered in the global numerical models describing metal dust combustion. In th
Externí odkaz:
https://doaj.org/article/351babb0753442d9a0527572f5acd175
Publikováno v:
Applications in Energy and Combustion Science, Vol 11, Iss , Pp 100080- (2022)
Thermal processing of aluminum (Al) particles such as annealing followed by rapid quenching had been previously shown to affect single metal particle burning rates. This study extends single particle combustion to a global material-based energy excha
Externí odkaz:
https://doaj.org/article/31f7a82c7a9642368d411e20151c4a0e
Publikováno v:
Carbon Trends, Vol 8, Iss , Pp 100184- (2022)
In this work, light absorption spectra of carbon nanoparticles sampled at different heights from an ethylene/air premixed flame were studied. The spectral behavior of the light absorption coefficient was analyzed in the high energy (Tauc) and low ene
Externí odkaz:
https://doaj.org/article/b4b55cced6dc45b9b695a48a03f41055
Publikováno v:
Materials, Vol 14, Iss 24, p 7775 (2021)
The paper studies nanoparticle formation in a glowing wire generator (GWG), in which the gas carrier flows around heated metal wire, producing aerosols from a vapor released from the surface. The device has been customized, enabling the use of a doub
Externí odkaz:
https://doaj.org/article/aea192be13694132af64ded260f3a372
Publikováno v:
Materials, Vol 14, Iss 11, p 2891 (2021)
This paper attempts to demonstrate the importance of the nanoparticle charge in the synthesis flame, for the mechanism of their evolution during formation processes. An investigation was made of MgO nanoparticles formed during combustion of magnesium
Externí odkaz:
https://doaj.org/article/2a7402e9f338401bbe04187872c3c27f
Publikováno v:
Materials, Vol 14, Iss 9, p 2303 (2021)
The application of pyrometry to retrieve particle temperature in particulate-generating flames strictly requires the knowledge of the spectral behavior of emissivity of light-emitting particles. Normally, this spectral behavior is considered time-ind
Externí odkaz:
https://doaj.org/article/7271093aa4f4484a80627c316a9646a6
Autor:
Igor Altman
Publikováno v:
Materials, Vol 12, Iss 9, p 1368 (2019)
This article will discuss the combustion of metal nanoparticles and explain the burn time dependence on particle size. In contrary to common belief in the power law (tb~d0.3), which, in our knowledge, is simply an experimental fit to data, we propose
Externí odkaz:
https://doaj.org/article/d1fb4e2aa34041d5b2b67d5530e1d129
Autor:
Igor Altman
Publikováno v:
Ukrainian Interventional Neuroradiology and Surgery. 40:72-82
Objective ‒ тo study changes in angiogenesis factors (VEGF-A, VEGFR-1, Great Endothelin-1) in the blood plasma of patients with arteriovenous malformation (AVM) of different localization before and after endovascular treatment depending on the typ