Zobrazeno 1 - 10
of 98
pro vyhledávání: '"Roman Weber"'
Publikováno v:
Energies, Vol 14, Iss 18, p 5840 (2021)
The subject of this work is the mathematical modelling of a counter-current moving-bed gasifier fuelled by wood-pellets. Two versions of the model have been developed: the one-dimensional (1D) version-solving a set of Ordinary Differential Equations
Externí odkaz:
https://doaj.org/article/97325478e5f14000a2f9ba8d912abf29
Publikováno v:
Communications, Vol 17, Iss 3, Pp 18-24 (2015)
Combustion of biomass fuel itself as a renewable energy source does not automatically ensure the best use of its energy content with low emission production. Biomass combustion with bad settings of combustion conditions can be ineffective and with a
Externí odkaz:
https://doaj.org/article/15c7337ced754ddfafcd6cfb7d4f727f
Autor:
Ludger Wessjohann, Svetlana Zakharova, Diana Schulze, Julia Kufka, Roman Weber, Lars Bräuer, Wolfgang Brandt
Publikováno v:
CHIMIA, Vol 63, Iss 6 (2009)
The functional role of isoprenoids and especially enzymatic prenylation in nature and human application is briefly covered, with the focus on bioinformatical, mechanistical and structural aspects of prenyltransferases and terpene synthases. These enz
Externí odkaz:
https://doaj.org/article/ed9b9cd9bbb64e1d9cedcf4ced2424d9
Autor:
Rubén Herrera-Trinidad, Pedro Molinero-Mourelle, Manrique Fonseca, Adrian Roman Weber, Vicente Vera, María Luz Mena, Vicente Vera-González
Publikováno v:
Materials, Vol 16, Iss 18, p 6213 (2023)
The goal of this study was to evaluate the pH and the release of calcium from four calcium-silicate-based cements. Methods: Four materials were tested (ProClinic MTA; Angelus MTA; ProRoot MTA; Biodentine). The palatal canal root of acrylic upper mola
Externí odkaz:
https://doaj.org/article/5bc97697c15d41a7aa0f8b0cee3d6fbb
Autor:
Martin Schimmel, Noemi Anliker, Gabriela Panca Sabatini, Marcella Silva De Paula, Adrian Roman Weber, Pedro Molinero-Mourelle
Publikováno v:
Journal of Clinical Medicine, Vol 12, Iss 11, p 3760 (2023)
According to the World Health Organization (WHO), the estimated number of older adults is around 962 million and is projected to increase to 2.1 billion by 2050. The oral frailty concept is associated with gradual oral function loss in relation to ag
Externí odkaz:
https://doaj.org/article/f62f54157e864ed9986c7f35c01adb98
Autor:
Roman Weber
Publikováno v:
International Journal of Thermal Sciences. 190:108269
Publikováno v:
Thermal Science and Engineering Progress, 42, Art.-Nr.: 101772
Thermal radiation is an important sub-process in high-pressure entrained flow gasification. However, it was seldom investigated in previous CFD studies and was usually accounted for by common radiation and simplified gas radiation property models. Th
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 219:274-291
Gray gas emissivities of water vapor, carbon dioxide, and carbon monoxide are needed in many engineering calculations to determine radiative heat fluxes in high-temperature processes. In this work we provide (a) an EXCEL program (see Supplementary Ma
Publikováno v:
Applied Thermal Engineering. 144:170-180
In order to predict the behaviour of the heat-recovery (HR) /non-recovery (NR) coke oven during the coke-making process, time-dependent numerical simulations have been carried out. A one-dimensional (1D), self-made (non-commercial) mathematical model
Publikováno v:
Fuel. 228:50-61
The aim of this study was a thorough analysis of the kinetics of gasification process in an atmosphere of CO 2 . Firstly, kinetics parameters were determined on the basis of experimental data from non-isothermal thermogravimetric (TGA) measurements a