Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Alexander Petkov"'
Autor:
Alexander Petkov, Abhishek Mishra, Mattia Cattelan, Daniel Field, James Pomeroy, Martin Kuball
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-1 (2024)
Externí odkaz:
https://doaj.org/article/783cdac6eace4b07b2ffc72830068d25
Publikováno v:
Information, Vol 15, Iss 6, p 296 (2024)
Rationale. Object tracking has significance in many applications ranging from control of unmanned vehicles to autonomous monitoring of specific situations and events, especially when providing safety for patients with certain adverse conditions such
Externí odkaz:
https://doaj.org/article/daed8e9adb22490b8e758d69eb71dce5
Autor:
Alexander Petkov, Abhishek Mishra, Mattia Cattelan, Daniel Field, James Pomeroy, Martin Kuball
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-7 (2023)
Abstract Heterostructures of Ga $$_2$$ 2 O $$_3$$ 3 with other materials such as Si, SiC or diamond, are a possible way of addressing the low thermal conductivity and lack of p-type doping of Ga $$_2$$ 2 O $$_3$$ 3 for device applications, as well as
Externí odkaz:
https://doaj.org/article/795b98944ca8438fad6f83a9842d2dfe
Autor:
Angelina Stoyanova-Ivanova, Mirela Georgieva, Valeri Petrov, Jorge N. R. Martins, Laura Andreeva, Alexander Petkov, Nadia Petrova, Velizar Georgiev
Publikováno v:
Materials, Vol 16, Iss 10, p 3776 (2023)
Multiforce nickel–titanium (NiTi) orthodontic archwires release progressively increasing forces in a front-to-back direction along their length. The properties of NiTi orthodontic archwires depend on the correlation and characteristics of their mic
Externí odkaz:
https://doaj.org/article/6536e925e546429ab689ae7dd4f5b857
Autor:
Mirela Georgieva, Angelina Stoyanova-Ivanova, Sabina Cherneva, Valeri Petrov, Violeta Petrova, Laura Andreeva, Valentin Mihailov, Alexander Petkov, Valdek Mikli
Publikováno v:
Biotechnology & Biotechnological Equipment, Vol 35, Iss 1, Pp 1301-1311 (2021)
This study aimed to characterize and compare the latest generation multi-force Bio-active™ orthodontic archwires to determine if there is a change in their physicochemical and mechanical properties during orthodontic treatment. The physicochemical
Externí odkaz:
https://doaj.org/article/4c4c02ed77114fe38b9a4c7d6ae42838
Autor:
Angelina Stoyanova-Ivanova, Mirela Georgieva, Valeri Petrov, Laura Andreeva, Alexander Petkov, Velizar Georgiev
Publikováno v:
Materials, Vol 16, Iss 2, p 483 (2023)
Multiforce orthodontic archwires are thermodynamic wires made of nickel-titanium alloy (Ni-Ti). They release biologically tolerable forces along their length, progressively increasing from front to back. The frontal archwires’ segments distribute t
Externí odkaz:
https://doaj.org/article/0c6cc5f04682465c8c05459b62d113ef
Autor:
Alexander Petkov, Abhishek Mishra, Mattia Cattelan, Daniel Field, James Pomeroy, Martin Kuball
Publikováno v:
Scientific Reports. 13
Heterostructures of Ga$$_2$$ 2 O$$_3$$ 3 with other materials such as Si, SiC or diamond, are a possible way of addressing the low thermal conductivity and lack of p-type doping of Ga$$_2$$ 2 O$$_3$$ 3 for device applications, as well as of improving
Autor:
Stefan Ivanov, Alexander Petkov
Publikováno v:
Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas. 117
We establish quaternionic contact (qc) versions of the so called Almost Schur Lemma, which give estimations of the qc scalar curvature on a compact qc manifold to be a constant in terms of the norm of the $[-1]$-component and the norm of the trace-fr
Autor:
V. Mihailov, Violeta Petrova, A. Stoyanova-Ivanova, Sabina Cherneva, Alexander Petkov, Mirela Georgieva, Valdek Mikli, Laura Andreeva, Valeri Petrov
Publikováno v:
Biotechnology & Biotechnological Equipment, Vol 35, Iss 1, Pp 1301-1311 (2021)
This study aimed to characterize and compare the latest generation multi-force Bio-active™ orthodontic archwires to determine if there is a change in their physicochemical and mechanical properties during orthodontic treatment. The physicochemical
Publikováno v:
Applied Physics Letters. 122:031602
Integration of β-Ga2O3 with high thermal conductivity materials such as diamond has been considered due to β-Ga2O3's low and anisotropic thermal conductivity, reaching only 27 W m–1 K–1. However, the effect of crystallographic orientation on th