Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Danail D. Stratiev"'
Publikováno v:
Mathematics, Vol 12, Iss 19, p 3017 (2024)
Oil refining is a branch of industry that delivers energy to move our vehicles. The transportation of people and goods by airplanes, ships, trains, trucks, buses, and cars is unthinkable for modern mankind without the use of refined petroleum automot
Externí odkaz:
https://doaj.org/article/69dc6aa252734b639ab283ba2506d9cb
Publikováno v:
Mathematics, Vol 11, Iss 17, p 3800 (2023)
The parallel processes involved in the production of refinery fuel gas, liquid petroleum gas (LPG), propylene, and polypropylene, occurring in thirteen refinery units, are modeled by the use of a Generalized Net (GN) apparatus. The modeling of the pr
Externí odkaz:
https://doaj.org/article/106426e895c44ea6838ed9c15c5614af
Autor:
Dicho Stratiev, Svetoslav Nenov, Dimitar Nedanovski, Ivelina Shishkova, Rosen Dinkov, Danail D. Stratiev, Denis D. Stratiev, Sotir Sotirov, Evdokia Sotirova, Vassia Atanassova, Simeon Ribagin, Krassimir Atanassov, Dobromir Yordanov, Nora A. Angelova, Liliana Todorova-Yankova
Publikováno v:
Energies, Vol 15, Iss 5, p 1755 (2022)
The use of hydrocracked and straight-run vacuum residues in the production of road pavement bitumen requires a good understanding of how the viscosity and softening point can be modeled and controlled. Scientific reports on modeling of these rheologi
Externí odkaz:
https://doaj.org/article/a9ec8dcfcdc04b10b23d8f79ebec115b
Autor:
Dicho Stratiev, Svetoslav Nenov, Dimitar Nedanovski, Ivelina Shishkova, Rosen Dinkov, Danail D. Stratiev, Denis D. Stratiev, Sotir Sotirov, Evdokia Sotirova, Vassia Atanassova, Krassimir Atanassov, Dobromir Yordanov, Nora A. Angelova, Simeon Ribagin, Liliana Todorova-Yankova
Publikováno v:
Resources, Vol 10, Iss 10, p 99 (2021)
Four nonlinear regression techniques were explored to model gas oil viscosity on the base of Walther’s empirical equation. With the initial database of 41 primary and secondary vacuum gas oils, four models were developed with a comparable accuracy
Externí odkaz:
https://doaj.org/article/2203e86f2568438fb3eeee563ba1ea40
Autor:
Dicho S. Stratiev, Svetoslav Nenov, Ivelina K. Shishkova, Rosen K. Dinkov, Kamen Zlatanov, Dobromir Yordanov, Sotir Sotirov, Evdokia Sotirova, Vassia Atanassova, Krassimir Atanassov, Danail D. Stratiev, Liliana Todorova-Yankova
Publikováno v:
Resources, Vol 10, Iss 8, p 82 (2021)
This work presents characterization data and viscosity of 34 secondary vacuum gas oils (H-Oil gas oils, visbreaker gas oils, and fluid catalytic cracking slurry oils) with aromatic content reaching up to 100 wt.%. Inter-criteria analysis was employed
Externí odkaz:
https://doaj.org/article/971a82bc826e427ebaf327cca2aa2c93
Autor:
Dicho S. Stratiev, Ivelina K. Shishkova, Rosen K. Dinkov, Ivan P. Petrov, Iliyan V. Kolev, Dobromir Yordanov, Sotir Sotirov, Evdokia Sotirova, Vassia Atanassova, Simeon Ribagin, Krassimir Atanassov, Danail D. Stratiev, Svetoslav Nenov, Liliana Todorova-Yankova, Kamen Zlatanov
Publikováno v:
Resources, Vol 10, Iss 7, p 71 (2021)
Inter-criteria analysis was employed in VGO samples having a saturate content between 0.8 and 93.1 wt.% to define the statistically significant relations between physicochemical properties, empirical structural models and vacuum gas oil compositional
Externí odkaz:
https://doaj.org/article/4ce61b5292204ac4968d048e3b80cd7e
Autor:
Ivelina K. Shishkova, Dicho S. Stratiev, Mariana P. Tavlieva, Rosen K. Dinkov, Dobromir Yordanov, Sotir Sotirov, Evdokia Sotirova, Vassia Atanassova, Simeon Ribagin, Krassimir Atanassov, Danail D. Stratiev, Liliana Todorova-Yankova, Svetoslav Nenov
Publikováno v:
Resources, Vol 10, Iss 8, p 75 (2021)
Thirty crude oils, belonging to light, medium, heavy, and extra heavy, light sulfur, and high sulfur have been characterized and compatibility indices defined. Nine crude oil compatibility indices have been employed to evaluate the compatibility of c
Externí odkaz:
https://doaj.org/article/3827fd838ed94912ac6a7f62362d7869
Autor:
Dicho Stratiev, Rosen Dinkov, Mariana Tavlieva, Ivelina Shishkova, Georgi Nikolov Palichev, Simeon Ribagin, Krassimir Atanassov, Danail D. Stratiev, Svetoslav Nenov, Dimitar Pilev, Sotir Sotirov, Evdokia Sotirova, Stanislav Simeonov, Viktoria Boyadzhieva
Publikováno v:
Processes
Volume 11
Issue 2
Pages: 420
Volume 11
Issue 2
Pages: 420
Forty-eight crude oils with variations in specific gravity (0.782 ≤ SG ≤ 1.002), sulphur content (0.03 ≤ S ≤ 5.6 wt.%), saturate content (23.5 ≤ Sat. ≤ 92.9 wt.%), asphaltene content (0.1 ≤ As ≤ 22.2 wt.%), and vacuum residue content
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95939607e646a45060846011b512b61b
Autor:
Ivelina Shishkova, Nora Angelova, Sotir Sotirov, Rosen Dinkov, Danail D. Stratiev, Dobromir Yordanov, Svetoslav Nenov, Dimitar Nedanovski, Krassimir T. Atanassov, Liliana Todorova-Yankova, Simeon Ribagin, Dicho Stratiev, Vassia Atanassova, Denis D. Stratiev, Evdokia Sotirova
Publikováno v:
Resources, Vol 10, Iss 99, p 99 (2021)
Resources
Volume 10
Issue 10
Resources
Volume 10
Issue 10
Four nonlinear regression techniques were explored to model gas oil viscosity on the base of Walther’s empirical equation. With the initial database of 41 primary and secondary vacuum gas oils, four models were developed with a comparable accuracy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ef7463871194d3e0dcf2b09732f3875
https://www.mdpi.com/2079-9276/10/10/99
https://www.mdpi.com/2079-9276/10/10/99
Autor:
Krassimir T. Atanassov, Vassia Atanassova, Mariana P. Tavlieva, Ivelina Shishkova, Dicho Stratiev, Simeon Ribagin, Evdokia Sotirova, Sotir Sotirov, Rosen Dinkov, Dobromir Yordanov, Svetoslav Nenov, Liliana Todorova-Yankova, Danail D. Stratiev
Publikováno v:
Resources
Volume 10
Issue 8
Resources, Vol 10, Iss 75, p 75 (2021)
Volume 10
Issue 8
Resources, Vol 10, Iss 75, p 75 (2021)
Thirty crude oils, belonging to light, medium, heavy, and extra heavy, light sulfur, and high sulfur have been characterized and compatibility indices defined. Nine crude oil compatibility indices have been employed to evaluate the compatibility of c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7232cb83961ae9c66814ac9e5e21b0ed