Results 21 to 30 of about 4,471,573 (294)

A Systematic Survey of the Effects of Wind Mass Loss Algorithms on the Evolution of Single Massive Stars [PDF]

, 2017
Mass loss is a key uncertainty in the evolution of massive stars. Stellar evolution calculations must employ parametric algorithms for mass loss, and usually only include stellar winds.
de Mink, Selma E., Ott, Christian D., Renzo, Mathieu, Shore, Steven N.   +3 more
core   +2 more sources

Influence of Tungsten on Dry Sliding Wear Behaviour of Sintered/Hot Extruded P/M Alloy Steels (Fe-C-W-Ti) [PDF]

Materials Research, 2017
In the present scenario, Powder Metallurgy (P/M) is an established manufacturing process used to make components of complex geometries with high strength and tolerances by using incredible materials which are difficult to melt or form by other processes.
S. Senthur Prabu, S. Prathiba, M.A. Asokan, MK Sreelekh, Francis Steff, Mounish Sai   +5 more
doaj   +1 more source

Determination of resistance to cavitation of pyrophyllite samples

Zaštita Materijala, 2021
The resistance under the action of cavitation of sintered pyrophillite samples was investigated. The initial sample of pyrophillite from the Parsovic-BiH deposit was ground a vibrating mill to a granulation of 20 mm, pressed and sintered at temperatures (
Dragan Radulović, Marko Pavlović, Marina Dojčinović   +2 more
doaj   +1 more source

Mass Loss from Cool Stars [PDF]

Annual Review of Astronomy and Astrophysics, 1981
AbstractRecently obtained spectroscopic observations indicating mass loss in cool stars are reviewed with analogies to the solar atmosphere. Spectral diagnostics of mass loss are discussed with new theoretical calculations of chromospheric line profiles.
openaire   +1 more source

Mass Loss from Eta Carinae [PDF]

Symposium - International Astronomical Union, 1979
This high luminosity (5 × 106 L⊙) star since 1840 is losing mass at the rate of 7.5 × 10−2 M⊙ per year. The large mass loss could be the result of vibrational instabilities produced in the CNO hydrogen burning phase of a very massive (160 M⊙) star. The presence of high excitation lines in the ultraviolet spectrum of Eta Car suggests the idea of a hot ...
C. D. Andriesse, R. Viotti
openaire   +1 more source

Coating based on basalt protection metal structures [PDF]

Tehnika, 2021
The paper present the results of the synthesis of a new refractory coating based on basalt for the protection of metal construction under conditions of cavitation. Initial basalt samples obtained from the locality Vrelo - Kopaonik.
Pavlović Marko D., Dojčinović Marina B., Andrić Ljubiša D., Radulović Dragan S., Trumbulović Ljiljana M.   +4 more
doaj   +1 more source

Probing the mass-loss history of AGB and red supergiant stars from CO rotational line profiles - II. CO line survey of evolved stars: derivation of mass-loss rate formulae [PDF]

, 2010
We aim to (1) set up simple and general analytical expressions to estimate mass-loss rates of evolved stars, and (2) from those calculate estimates for the mass-loss rates of asymptotic giant branch (AGB), red supergiant (RSG), and yellow hypergiant ...
A. de Koter, Anders, Barthès, Bergeat, Bergeat, Bessell, Bessell, Bieging, Blackwell, Bujarrabal, Castro-Carrizo, Dambis, de Jager, Decin, Decin, Decin, Decin, Delfosse, di Benedetto, Dinh, E. De Beck, F. Kemper, Faure, Faúndez, Feast, Feast, Feast, García-Hernández, Green, Groenewegen, Groenewegen, Groenewegen, Haniff, He, Huggins, Humphreys, Iben, Josselin, Justtanont, Justtanont, K. Justtanont, K. M. Menten, Kahane, Kemper, Kerschbaum, Knapp, Knapp, Knapp, Knapp, Kwan, Kwok, L. Decin, Lasdon, Lebzelter, Levesque, Levesque, Likkel, Loup, Margulis, Marigo, Marigo, Massey, Massey, Matsuura, Mauron, Mauron, Milam, Neri, Neufeld, Nyman, Ohnaka, Olivier, Olofsson, Olofsson, Oudmaijer, Ramstedt, Ramstedt, Sahai, Schlegel, Schöier, Schöier, Schöier, Schöier, Schönberg, Skinner, Sloan, Slootmaker, Sopka, Speck, Stanek, Suárez, T. Verhoelst, Teyssier, van Langevelde, van Zadelhoff, Vassiliadis, Verhoelst, Wang, Wannier, Whitelock, Whitelock, Whitelock, Whitelock, Winters, Winters, Wood, Yeşilyaprak, Ziurys, Zuckerman   +108 more
core   +2 more sources

Profiling Corrosion Rates for Offshore Wind Turbines with Depth in the North Sea

Energies, 2020
Corrosion in the marine environment is a complex and expensive form of damage. It is commonly studied by the deployment of coupons that reflect the marine corrosion a structure will experience, thus allowing design and maintenance prevention strategies ...
Waseem Khodabux, Paul Causon, Feargal Brennan   +2 more
doaj   +1 more source

Mass Loss from α Ori [PDF]

International Astronomical Union Colloquium, 1981
High dispersion spectrograms of α Ori are obtained. Several strong absorption lines which have circumstellar components are measured. Assuming the plane-parallel envelope and thermal equilibrium, the mass loss rate is estimated as 1x10-6 Mʘ/yr.To obtain the mass loss rate of red giant stars is very important in connection with the study of the stellar ...
T. Tanabe, F. Kamijo
openaire   +1 more source

Influence of size and density of highly densified biomass briquette on combustion behavior

Nihon Kikai Gakkai ronbunshu, 2017
To investigate the influence of briquette size and density on the combustion behavior in both flaming and char combustion stage, the combustion experiments with the highly densified columnar briquette made from cypress sawdust were carried out.
Hiroyuki ITO
doaj   +1 more source