Spectroscopic investigation and heat generation of Tm3+/Ho3+ codoped aluminosilicate glasses emitting at 20 μm

2021 ◽  
Author(s):  
Eliel Silva Neto ◽  
Nelson Astrath ◽  
Uéslen Sales ◽  
Jurandir Rohling ◽  
Luis Malacarne ◽  
...  
Keyword(s):  
Heat Generation ◽  
Spectroscopic Investigation ◽  
Aluminosilicate Glasses

Spectroscopic investigation and heat generation of Yb^3+/Ho^3+ codoped aluminosilicate glasses looking for the emission at 2 μm

2013 ◽  
Vol 30 (5) ◽  
pp. 1322 ◽  
Author(s):  
Gomes S. N. Eliel ◽  
Kagola Upendra Kumar ◽  
Paulo T. Udo ◽  
Nelson G. C. Astrath ◽  
Luis Carlos Malacarne ◽  
...  
Keyword(s):  
Heat Generation ◽  
Spectroscopic Investigation ◽  
Aluminosilicate Glasses

IR-spectroscopic investigation of the structure of alkali-free aluminosilicate glasses modified by iron oxide

1993 ◽  
Vol 58 (1-2) ◽  
pp. 162-165 ◽  
Author(s):  
N. M. Bobkova ◽  
L. M. Silich ◽  
O. N. V'yal' ◽  
S. E. Barantseva
Keyword(s):  
Iron Oxide ◽  
Spectroscopic Investigation ◽  
Aluminosilicate Glasses ◽  
Ir Spectroscopic

Some Results of the Spectroscopic Study of Four Close Binary Systems of Early Spectral Types

1965 ◽  
Vol 5 ◽  
pp. 120-130
Author(s):  
T. S. Galkina
Keyword(s):  
Spectroscopic Study ◽  
Spectral Type ◽  
Spectroscopic Investigation ◽  
Binary Systems ◽  
Quantitative Information ◽  
Close Binary ◽  
Physical Parameters ◽  
Absorption And Emission ◽  
Close Binary Systems ◽  
Quantitative Estimates

It is necessary to have quantitative estimates of the intensity of lines (both absorption and emission) to obtain the physical parameters of the atmosphere of components.Some years ago at the Crimean observatory we began the spectroscopic investigation of close binary systems of the early spectral type with components WR, Of, O, B to try and obtain more quantitative information from the study of the spectra of the components.

Heat Generation and Transport in the Earth

2010 ◽  
Author(s):  
Claude Jaupart ◽  
Jean-Claude Mareschal
Keyword(s):  
Heat Generation ◽  
The Earth

Numerical Study of the Combined Free-Forced Convection and Mass Transfer Flow Past a Vertical Porous Plate in a Porous Medium with Heat Generation and Thermal Diffusion

2006 ◽  
Vol 11 (4) ◽  
pp. 331-343 ◽  
Author(s):  
M. S. Alam ◽  
M. M. Rahman ◽  
M. A. Samad
Keyword(s):  
Mass Transfer ◽  
Flow Field ◽  
Differential Equations ◽  
Forced Convection ◽  
Heat Generation ◽  
Numerical Study ◽  
Porous Plate ◽  
Integration Scheme ◽  
Suction Parameter ◽  
Transfer Flow

The problem of combined free-forced convection and mass transfer flow over a vertical porous flat plate, in presence of heat generation and thermaldiffusion, is studied numerically. The non-linear partial differential equations and their boundary conditions, describing the problem under consideration, are transformed into a system of ordinary differential equations by using usual similarity transformations. This system is solved numerically by applying Nachtsheim-Swigert shooting iteration technique together with Runge-Kutta sixth order integration scheme. The effects of suction parameter, heat generation parameter and Soret number are examined on the flow field of a hydrogen-air mixture as a non-chemical reacting fluid pair. The analysis of the obtained results showed that the flow field is significantly influenced by these parameters.

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