Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Dimitar Valev"'
Autor:
Rolf Werner, Veneta Guineva, Irina Despirak, Andris Lyubchich, Rumiana Bojilova, Lyubomira Raykova, Atanas Atanassov, Dimitar Valev
Statistical studies allow probability statements about the frequency of certain events. The occurrence of magnetic substorms and their activity have been described with the help of extreme value distributions in the last few decades using the auroral
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48233d77977016652baea39f02da4a5b
Autor:
Rolf Werner, Boyan Petkov, A. S. Kirillov, Dimitar Valev, Dimitar Danov, Atanas Marinov Atanassov, Veneta Guineva
Publikováno v:
Aerospace Research in Bulgaria. 33:31-39
The UV-index (UVI) is a measure of the erythemally effective solar radiation reaching the Earth surface and it was introduced to alert people about the need of Sun protection. The present study applies a model that estimates the UVI over the high Bul
Publikováno v:
Current Microbiology
It is shown that a freshly inoculated culture of the model cyanobacterium Synechocystis sp. PCC 6803 consumed almost all phosphate and 50% of nitrate within 6 days from the nutrient-rich BG-11 growth medium, indicating potential of cyanobacteria to p
Publikováno v:
Journal of Applied Phycology. 32:399-410
The potential of a wastewater treatment and biomass production process with the green microalgae Neochloris oleoabundans in a 45-L tubular photobioreactor was tested. In a stable and reliable alga-based process, wastewaters should undergo pre-treatme
Autor:
Rumiana Bojilova, R. Werner, Atanas Marinov Atanassov, Dimitar Valev, Lyubomira Raykova, Irina Despirak, Veneta Guineva, A. A. Lubchich
Publikováno v:
EPJ Web of Conferences, Vol 254, p 01002 (2021)
In this work the first results of the creation of a substorms catalog including the mid-latitude positive bays (MPB) registered at the Bulgarian station Panagjurishte (∼37° GMLat, ∼97° GMLon) are presented. MPB index characterizes the mid-latit
Autor:
Dimitar Valev
We have used data for 45 countries with a population of over 30 millions in which 85.8% of the world9s population lives. The statistical relationships of total COVID-19 Cases and Deaths per million populations in these countries with 10 demographic,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8a50432594a1b80d5f79945c1b85d3b
https://doi.org/10.1101/2020.09.05.20188953
https://doi.org/10.1101/2020.09.05.20188953
Publikováno v:
Algal Research. 55:102247
To guarantee year-round horticultural production, Nordic countries rely on greenhouses to cope with the harsh winter conditions. Despite substantial progress in greenhouse operation, greenhouse effluents are still overloaded with nutrients and are kn
Autor:
Dimitar Valev
Publikováno v:
Physics International. 8:24-29
The Hubble constant has been added in addition to the three fundamental constants (speed of light, gravitational constant and Planck constant) used by Max Planck, for derivation of the Planck mass by dimensional analysis. As a result, a general solut
Publikováno v:
Plant and Cell Physiology. 60(2)
Regulatory σ factors of the RNA polymerase (RNAP) adjust gene expression according to environmental cues when the cyanobacterium Synechocystis sp. PCC 6803 acclimates to suboptimal conditions. Here we show central roles of the non-essential group 2
Publikováno v:
Proceedings of the International Conference of Computational Methods in Sciences and Engineering 2019 (ICCMSE-2019)
GND Network
GND Network
We carried out a statistical analysis of the monthly cerebral malaria cases in Papua New Guinea for the period January 1987 - December 1996 and also the analysis of the monthly solar activity and geomagnetic activity for the same period. The solar ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2e4fe9103ca19c42d533745372a9757
https://id.culturegraph.org/K10Plus:1743463480
https://id.culturegraph.org/K10Plus:1743463480