Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Valentin Mihailov"'
Publikováno v:
Minerals, Vol 14, Iss 7, p 683 (2024)
In the prehistoric period on the Balkan Peninsula, the technology of white decoration underwent a drastic change. At the beginning of the Neolithic white pigment was applied as paint on a polished surface. At the end of the epoch, white paste was inl
Externí odkaz:
https://doaj.org/article/9c959b501f754e3e8195376fcfa1a3fa
Autor:
Georgi Avdeev, Rositsa Kukeva, Denitsa Yancheva, Valentin Mihailov, Vani Tankova, Momtchil Dimitrov, Georgi Nekhrizov, Radostina Stoyanova, Bistra Stamboliyska
Publikováno v:
Minerals, Vol 14, Iss 4, p 374 (2024)
In the present contribution, we report the results from a study on the ancient technology used to create decorative color plasters in the Thracian tomb near the village of Alexandrovo, Bulgaria. A series of fragments of red, black, grey, white and br
Externí odkaz:
https://doaj.org/article/46fb09a58b234f26b7ddd991bb38b316
Publikováno v:
Minerals, Vol 14, Iss 2, p 152 (2024)
Throughout history, ceramics have been the most abundant artifacts in archaeological discoveries. Within the Neolithic period in present-day Bulgaria, skilled artisans applied additional materials to decorate their pottery, evolving in composition an
Externí odkaz:
https://doaj.org/article/b78438d90cfe4385a838f0ad00ef599a
Autor:
Petya Penkova, Galina Malcheva, Margarita Grozeva, Tanya Hristova, Georgy Ivanov, Stefan Alexandrov, Kiril Blagoev, Vani Tankova, Valentin Mihailov
Publikováno v:
Quantum Beam Science, Vol 7, Iss 3, p 22 (2023)
In the presented work, a total of 60 bronze artefacts from the prehistoric settlement of Baley, Bulgaria were analyzed by means of laser-induced breakdown spectroscopy (LIBS) and X-ray fluorescence spectroscopy (XRF). The archaeological finds were ex
Externí odkaz:
https://doaj.org/article/131e65728a724d15a91955a46bd67fb7
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:
Mindaugas Rukanskis, Juozas Padgurskas, Valentin Mihailov, Raimundas Rukuiža, Audrius Žunda, Kęstutis Baltakys, Simona Tučkutė
Publikováno v:
Coatings; Volume 13; Issue 5; Pages: 825
This work presents the results of tribological tests of Mo and combined coatings TiAlC formed using electrospark alloying (ESA) technology and additionally processed using thermochemical electrolyte anodic heating (TEAH). ESA makes it possible to for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79ac8a98d122e96ede8df26790ef9218
https://vb.ktu.edu/KTU:ELABAPDB163501832&prefLang=en_US
https://vb.ktu.edu/KTU:ELABAPDB163501832&prefLang=en_US
Autor:
Georgi Yankov, Stefan Karatodorov, Valentin Mihailov, Vani Tankova, Nikolay Nedyalkov, Ekaterina Iordanova
Publikováno v:
Proceedings of the Bulgarian Academy of Sciences. 76
The current work is a case study of ongoing in-depth extensive fundamental research on the plasma formation and relaxation dynamics in transparent media induced by mid- and short-wavelength infrared laser pulses. The experimental investigation is per
Publikováno v:
Key Engineering Materials
It was shown that under dry contact conditions, under normal load of to 2 MPa, all coatings demonstrated a significant increase in wear resistance compared to that of the substrate. However, among them, the Mo coating showed the highest wear resistan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a681085cdf5af109dfd783e333661fbe
Autor:
Rita Kriūkienė, Raimundas Rukuiža, Vasile Agafii, Raimondas Kreivaitis, Juozas Padgurskas, Arūnas Baltušnikas, Valentin Mihailov
Publikováno v:
Surface and Coatings Technology. 311:90-97
Various coating methods have become an essential way for surface strengthening; therefore new materials and coating technologies are being extensively studied. Bronze, molybdenum, and chromium, as well as a complex coating of T15K6 + bronze, were inv