Institution
Bulgarian Academy of Sciences
Government•Sofia, Bulgaria•
About: Bulgarian Academy of Sciences is a government organization based out in Sofia, Bulgaria. It is known for research contribution in the topics: Catalysis & Coupling constant. The organization has 17989 authors who have published 36276 publications receiving 642820 citations. The organization is also known as: Bulgarian Academy of Sciences，簡稱：BAS & Balgarska Akademiya na Naukite.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, the authors compared the QCD prediction with various parton distribution functions to determine the top-quark pole mass, View the MathML sourcemtpole, or the strong coupling constant, αSαS.
128 citations
TL;DR: In this article, it has been found that NO adsorption on ZrO2 results in formation of N2O (2282, 2244, and 1233 cm-1) and small amounts of nitro species (1443 and 1423 cm -1), nitrates (1558, 1189, and 1057 cm- 1), and nitric acid (1621 and 1142 cm −1).
Abstract: Adsorption of NO and its coadsorption with oxygen on ZrO2 and sulfated ZrO2 have been studied by FTIR spectroscopy. It has been found that NO adsorption on ZrO2 results in formation of N2O (2282, 2244, and 1233 cm-1) and small amounts of nitro species (1443 and 1423 cm-1), nitrates (1558, 1189, and 1057 cm-1), and nitric acid (1621 and 1142 cm-1). With time, the nitrate bands (1640−1560, 1290−1220, and 1042−1004 cm-1) develop and enhance the Lewis acidity of nearby Zr4+ cations. As a result, coordinated NO (1906 cm-1) is formed. On sulfated zirconia, nitrosyls (1908 cm-1) are produced immediately after NO adsorption evidencing an increased acidity of the Zr4+ cations as a result of the sulfate inductive effect. In addition, nitrates and nitric acid are produced similarly to the case of the sulfate-free sample. Addition of oxygen to the NO−ZrO2 system results in formation of nitrites (1180 cm-1, disappearing in excess oxygen) and in a strong increase in concentration of the nitrates. Besides, NO+ (2206 cm-...
128 citations
TL;DR: In this article, the authors compared plant assemblages from southeastern Europe to provide a new insights on the Miocene vegetation and climate dynamics and evolution in Southeastern Europe, and found that the vegetation shows a decreasing trend in abundance of palaeotropic and thermophilous elements, reduction of macrothermic elements, and disappearance of evergreen laurel forests.
128 citations
TL;DR: In this article, the authors solved the critical exponent problem for the nonlinear wave equation with damping and showed that this critical exponent coincides with the famous Fujita critical exponent for the heat equation.
Abstract: In this study we solve the critical exponent problem for the nonlinear wave equation with damping. We show that this critical exponent coincides with the famous Fujita critical exponent for the heat equation. We also observe a futher interesting phenomenon due to the presence of the damping term. The “real” support of the solution is strongly suppressed by the damping and is concentrated in the ball |x| 0 the solution decays exponentially.
128 citations
TL;DR: The biological study indicated that compounds 4-ethyl-5-(4,5,6,7-tetrahydro-1-benzothien-2-yl) and 4-amino-5 possessed high cytotoxicity in vitro against thymocytes against lymphocytes.
128 citations
Authors
Showing all 18074 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Dimitri Bourilkov | 134 | 1489 | 96884 |
| Eduardo De Moraes Gregores | 133 | 1454 | 92464 |
| Georgi Sultanov | 132 | 1493 | 93318 |
| Plamen Iaydjiev | 131 | 1285 | 87958 |
| Pedro G Mercadante | 129 | 1331 | 86378 |
| Jordan Damgov | 129 | 1195 | 85490 |
| Roumyana Hadjiiska | 126 | 1003 | 73091 |
| Mircho Rodozov | 124 | 972 | 70519 |
| Cesar Augusto Bernardes | 124 | 965 | 70889 |
| Viktor Matveev | 123 | 1212 | 73939 |
| Ayda Beddall | 120 | 816 | 67063 |
| Andrey Marinov | 119 | 893 | 57183 |
| Mariana Vutova | 117 | 606 | 56698 |
| Lester Packer | 112 | 751 | 63116 |
| Patrick Couvreur | 111 | 678 | 56735 |