Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Tsvetelina Petrova"'
Publikováno v:
Molecules, Vol 28, Iss 12, p 4842 (2023)
The present study aimed at utilizing technically hydrolyzed lignin (THL), industrial biomass residue, derived in high-temperature diluted sulfuric acid hydrolysis of softwood and hardwood chips to sugars. The THL was carbonized in a horizontal tube f
Externí odkaz:
https://doaj.org/article/7a55ceac9e374645af1d56e8684d9c0f
Autor:
Malinka Ivanova, Tsvetelina Petrova
Publikováno v:
Informatics, Vol 10, Iss 2, p 37 (2023)
During the pandemic, universities were forced to convert their educational process online. Students had to adapt to new educational conditions and the proposed online environment. Now, we are back to the traditional blended learning environment and w
Externí odkaz:
https://doaj.org/article/0f82826fdfb24ca5b2ac57b80ae0e390
Publikováno v:
Applied Sciences, Vol 13, Iss 5, p 3240 (2023)
The present work aims at (a) carbonizing agriculture biomass residue; (b) characterizing the obtained biochar; and (c) exploring its potential use for energy/resource recovery purposes. Six types of biomass were carbonized. The biochar was investigat
Externí odkaz:
https://doaj.org/article/e7bfe147ea1d4f6ba39998da3f53cc67
Autor:
Ricardo Ferreira, Tsvetelina Petrova, Ana F. Ferreira, Mário Costa, Iliyana Inaydenova, Stela Atanasova-Vladimirova, Bogdan Ranguelov
Publikováno v:
Energies, Vol 14, Iss 2, p 385 (2021)
The main purpose of the present work was to evaluate the efficiency of the gasification process of three different types of agro-forest biomass residue (rapeseed, softwood, and sunflower husks) along with the characterization of size-segregated parti
Externí odkaz:
https://doaj.org/article/ac88e2601cf741b2b81a9b9215d792ca
Publikováno v:
Molecules; Volume 28; Issue 12; Pages: 4842
The present study aimed at utilizing technically hydrolyzed lignin (THL), industrial biomass residue, derived in high-temperature diluted sulfuric acid hydrolysis of softwood and hardwood chips to sugars. The THL was carbonized in a horizontal tube f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::6c000ee31664f263c89756bcccea6941
The present study aimed at utilizing technically hydrolyzed lignin (THL), industrial biomass residue, derived in high-temperature diluted sulphuric acid hydrolysis of softwood and hardwood chips to sugars. The THL was carbonized in horizontal tube fu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7b462e63af83aaecc63fd332ccb5d7b
https://doi.org/10.20944/preprints202304.1262.v1
https://doi.org/10.20944/preprints202304.1262.v1
Autor:
Tsvetelina Petrova
Publikováno v:
Uniform distribution theory. 16:71-92
In the present paper the author uses the function system Γ ℬ s constructed in Cantor bases to show upper bounds of the extreme and star discrepancy of an arbitrary net in the terms of the trigonometric sum of this net with respect to the functions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7acdafb4001d0132d6319b0d849bb66b
https://doi.org/10.2478/udt-2021-0004
https://doi.org/10.2478/udt-2021-0004
Publikováno v:
Uniform distribution theory. 15:27-50
In the present paper the so-called (VilBs; α; γ)-diaphony as a quantitative measure for the distribution of sequences and nets is considered. A class of two-dimensional nets Z B 2 , ν κ , μ Z_{{{\rm B}_2},\nu }^{\kappa ,\mu } of type of Zaremba-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b65069627335f702d5174774b0df6a8d
https://doi.org/10.2478/udt-2020-0002
https://doi.org/10.2478/udt-2020-0002
Publikováno v:
CBU International Conference Proceedings. 7:982-987
Heavy metals are one of the major pollutants. The main sources of pollution are industry, transport, the use of pesticides and mineral fertilizers in agriculture, the military industry, etc. Pollution is mostly around businesses, highways and treated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c138b35e7f23b06abe6290fdb1e02d9c
https://doi.org/10.12955/cbup.v7.1488
https://doi.org/10.12955/cbup.v7.1488
Autor:
Tsvetelina Petrova
Publikováno v:
2021 6th International Symposium on Environment-Friendly Energies and Applications (EFEA).
This work aims at investigating the possibility to assess the higher heating value of the lignocellulosic biofuels through correlations based on the different analyses, namely ultimate, proximate and lignocellulosic. Seventeen empirical equations wer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a8e877f953c1d978a97c46809ff157d
https://doi.org/10.1109/efea49713.2021.9406264
https://doi.org/10.1109/efea49713.2021.9406264