Search Results - "Georgieva, I"

Masses and compositions of three small planets orbiting the nearby M dwarf L231-32 (TOI-270) and the M dwarf radius valley by Van Eylen, V, Astudillo-Defru, N, Bonfils, X, Livingston, J, Hirano, T, Luque, R, Lam, K W F, Justesen, A B, Winn, J N, Gandolfi, D, Nowak, G, Palle, E, Albrecht, S, Dai, F, Campos Estrada, B, Owen, J E, Foreman-Mackey, D, Fridlund, M, Korth, J, Mathur, S, Forveille, T, Mikal-Evans, T, Osborne, H L M, Ho, C S K, Almenara, J M, Artigau, E, Barragán, O, Barros, S C C, Bouchy, F, Cabrera, J, Caldwell, D A, Charbonneau, D, Chaturvedi, P, Cochran, W D, Csizmadia, S, Damasso, M, Delfosse, X, De Medeiros, J R, Díaz, R F, Doyon, R, Esposito, M, Fűrész, G, Figueira, P, Georgieva, I, Goffo, E, Grziwa, S, Guenther, E, Hatzes, A P, Jenkins, J M, Kabath, P, Knudstrup, E, Latham, D W, Lavie, B, Lovis, C, Mennickent, R E, Mullally, S E, Murgas, F, Narita, N, Pepe, F A, Persson, C M, Redfield, S, Ricker, G R, Santos, N C, Seager, S, Serrano, L M, Smith, A M S, Mascareño, A Suárez, Subjak, J, Twicken, J D, Udry, S, Vanderspek, R, Zapatero Osorio, M R

“…ABSTRACT We report on precise Doppler measurements of L231-32 (TOI-270), a nearby M dwarf (d = 22 pc, M⋆ = 0.39 M⊙, R⋆ = 0.38 R⊙), which hosts three transiting…”
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Lanthanide and transition metal complexes of bioactive coumarins: Molecular modeling and spectroscopic studies by Georgieva, I., Mihaylov, Tz, Trendafilova, N.

“…The present paper summarizes theoretical and spectroscopic investigations on a series of active coumarins and their lanthanide and transition metal complexes…”
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DFT study of the molecular and crystal structure and vibrational analysis of cisplatin by Georgieva, I., Trendafilova, N., Dodoff, N., Kovacheva, D.

“…DFT and periodic-DFT (PAW-PBE method, code VASP) calculations have been performed to study the structural and vibrational characteristics of…”
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The TOI-763 system: sub-Neptunes orbiting a Sun-like star by Fridlund, M, Livingston, J, Gandolfi, D, Persson, C M, Lam, K W F, Stassun, K G, Hellier, C, Korth, J, Hatzes, A P, Malavolta, L, Luque, R, Redfield, S, Guenther, E W, Albrecht, S, Barragan, O, Benatti, S, Bouma, L, Cabrera, J, Cochran, W D, Csizmadia, S, Dai, F, Deeg, H J, Esposito, M, Georgieva, I, Grziwa, S, González Cuesta, L, Hirano, T, Jenkins, J M, Kabath, P, Knudstrup, E, Latham, D W, Mathur, S, Mullally, S E, Narita, N, Nowak, G, Olofsson, A O H, Palle, E, Pätzold, M, Pompei, E, Rauer, H, Ricker, G, Rodler, F, Seager, S, Serrano, L M, Smith, A M S, Spina, L, Subjak, J, Tenenbaum, P, Ting, E B, Vanderburg, A, Vanderspek, R, Van Eylen, V, Villanueva, S, Winn, J N

“…ABSTRACT We report the discovery of a planetary system orbiting TOI-763(aka CD-39 7945), a V = 10.2, high proper motion G-type dwarf star that was…”
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The young HD 73583 (TOI-560) planetary system: two 10-M⊕ mini-Neptunes transiting a 500-Myr-old, bright, and active K dwarf by Armstrong, D J, Gandolfi, D, Carleo, I, Vidotto, A A, Villarreal D’Angelo, C, Oklopčić, A, Isaacson, H, Oddo, D, Sousa, S G, Persson, C M, Hellier, C, Howell, S, Howard, A, Redfield, S, Eisner, N, Georgieva, I Y, Dragomir, D, Bayliss, D, Nielsen, L D, Klein, B, Aigrain, S, Zhang, M, Teske, J, Twicken, J D, Jenkins, J, Esposito, M, Rodler, F, Adibekyan, V, Alarcon, J, Anderson, D R, Akana Murphy, J M, Barrado, D, Barros, S C C, Benneke, B, Bouchy, F, Bryant, E M, Butler, R P, Burt, J, Cabrera, J, Casewell, S, Chaturvedi, P, Cloutier, R, Cochran, W D, Crane, J, Crossfield, I, Crouzet, N, Dai, F, Deeg, H J, Deline, A, Demangeon, O D S, Dumusque, X, Figueira, P, Furlan, E, Gnilka, C, Goad, M R, Goffo, E, Gutiérrez-Canales, F, Hadjigeorghiou, A, Hartman, Z, Hatzes, A P, Harris, M, Henderson, B, Hirano, T, Hojjatpanah, S, Hoyer, S, Kabáth, P, Korth, J, Lillo-Box, J, Luque, R, Močnik, T, Muresan, A, Murgas, F, Nagel, E, Osborne, H L M, Osborn, A, Osborn, H P, Palle, E, Raimbault, M, Ricker, G R, Rubenzahl, R A, Stockdale, C, Santos, N C, Scott, N, Schwarz, R P, Shectman, S, Seager, S, Ségransan, D, Serrano, L M, Skarka, M, Smith, A M S, Šubjak, J, Tan, T G, Udry, S, Watson, C, Wheatley, P J, West, R, Winn, J N, Wang, S X, Wolfgang, A, Ziegler, C

“…ABSTRACT We present the discovery and characterization of two transiting planets observed by TESS in the light curves of the young and bright (V = 9.67) star…”
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An algorithm for low-rank approximation of bivariate functions using splines by Georgieva, I., Hofreither, C.

“…We present an algorithm for the approximation of bivariate functions by “low-rank splines”, that is, sums of outer products of univariate splines. Our approach…”
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On best uniform approximation by low-rank matrices by Georgieva, I., Hofreither, C.

“…We study the problem of best approximation, in the elementwise maximum norm, of a given matrix by another matrix of lower rank. We generalize a recent result…”
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New results on regularity and errors of harmonic interpolation using Radon projections by Georgieva, I., Hofreither, C.

“…We study interpolation of harmonic functions in the unit disk with a finite number of values of the Radon projection along prescribed chords as the input data…”
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Mass Determinations of the Three Mini-Neptunes Transiting TOI-125 by Nielsen, L D, Gandolfi, D., Armstrong, D J, Jenkins, James, Fridlund, M, Santos, N C, Dai, F, Adibekyan, V, Luque, R, Steffen, J H, Esposito, M, Meru, F, Sabotta, S, Bolmont, E, Kossakowski, D, Otegi, J F, Murgas, F, Stalport, M, Rodler, F, Díaz, M R, Kurtovic, N T, Ricker, G, Vanderspek, R, Latham, D W, Seager, S, Winn, J N, Jenkins, J M, Allart, R, Almenara, J M., Barrado, D, Barros, S C C, Bayliss, D, Berdiñas, Z M, Boisse, I, Bouchy, F, Boyd, P, Brown, D J A, Bryant, E M, Burke, C, Cochran, W D, Cooke, B F, Demangeon, O D S, Díaz, R F, Dittman, J, Dorn, C, Dumusque, X, García, R A, González-Cuesta, L, Grziwa, S, Georgieva, I, Guerrero, N, Hatzes, A P, Helled, R, Henze, C E, Hojjatpanah, S, Korth, J, Lam, K W F, Lillo-Box, J, Lopez, T A, Livingston, J, Mathur, S, Mousis, O, Narita, N, Osborn, H P, Palle, E, Rojas, P A Peña, Persson, C M, Quinn, S N, Rauer, H, Redfield, S, Santerne, A, Santos, L A dos, Seidel, J V, Sousa, S G, Ting, E B, Turbet, M, Udry, S, Vanderburg, A, Eylen, V Van, Vines, J I, Wheatley, P J, Wilson, P A

“…The Transiting Exoplanet Survey Satellite, TESS, is currently carrying out an all-sky search for small planets transiting bright stars. In the first year of…”
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K2-99 revisited: a non-inflated warm Jupiter, and a temperate giant planet on a 522-d orbit around a subgiant by Smith, A M S, Breton, S N, Csizmadia, Sz, Dai, F, Gandolfi, D, García, R A, Howard, A W, Isaacson, H, Korth, J, Lam, K W F, Mathur, S, Nowak, G, Pérez Hernández, F, Persson, C M, Albrecht, S H, Barragán, O, Cabrera, J, Cochran, W D, Deeg, H J, Fridlund, M, Georgieva, I Y, Goffo, E, Guenther, E W, Hatzes, A P, Kabath, P, Livingston, J H, Luque, R, Palle, E, Redfield, S, Rodler, F, Serrano, L M, Van Eylen, V

“…ABSTRACT We report new photometric and spectroscopic observations of the K2-99 planetary system. Asteroseismic analysis of the short-cadence light curve from…”
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Predominance of influenza B/Yamagata lineage viruses in Bulgaria during the 2017/2018 season by Korsun, N S, Angelova, S G, Trifonova, I T, Georgieva, I L, Tzotcheva, I S, Mileva, S D, Voleva, S E, Kurchatova, A M, Perenovska, P I

“…In this study, we investigated the antigenic and genetic characteristics of influenza viruses circulating in Bulgaria during the 2017/2018 season. The…”
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Discovery of TOI-1260d and the characterization of the multiplanet system by Lam, K W F, Cabrera, J, Hooton, M J, Alibert, Y, Bonfanti, A, Beck, M, Deline, A, Florén, H-G, Simon, A E, Fossati, L, Persson, C M, Fridlund, M, Salmon, S, Hoyer, S, Osborn, H P, Wilson, T G, Georgieva, I Y, Nowak, Gr, Luque, R, Egger, J A, Adibekyan, V, Alonso, R, Escudé, G A, Bárczy, T, Barrado, D, Barros, S C C, Baumjohann, W, Beck, T, Bekkelien, A, Benz, W, Billot, N, Bonfils, X, Brandeker, A, Broeg, C, Charnoz, S, Cameron, A C, Csizmadia, Sz, Davies, M B, Deleuil, M, Delrez, L, Demangeon, O D S, Demory, B-O, Ehrenreich, D, Erikson, A, Fortier, A, Futyan, D, Gandolfi, D, Gillon, M, Guedel, M, Guterman, P, Laskar, J, Latham, D W, Lecavelier des Etangs, A, Lendl, M, Lovis, C, Heng, K, Isaak, K G, Kiss, L, Magrin, D, Maxted, P F L, Nascimbeni, V, Olofsson, G, Ottensamer, R, Pagano, I, Pallé, E, Peter, G, Piotto, G, Pollacco, D, Queloz, D, Ribas, I, Ragazzoni, R, Rando, N, Rauer, H, Santos, N C, Scandariato, G, Seager, S, Ségransan, D, Serrano, L M, Smith, A M S, Sousa, S G, Steller, M, Szabó, Gy M, Thomas, N, Udry, S, Van Grootel, V, Walton, N A, Winn, J N

“…ABSTRACT We report the discovery of a third planet transiting the star TOI-1260, previously known to host two transiting sub-Neptune planets with orbital…”
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Valorphins alter physicochemical characteristics of phosphatidylcholine membranes: Datasets on lipid packing, bending rigidity, specific electrical capacitance, dipole potential, vesicle size by Vitkova, Victoria, Staneva, Galya, Hazarosova, Rusina, Georgieva, Stela I., Valkova, Iva, Antonova, Krassimira, Todorov, Petаr

“…Endogenous hemorphins are being intensively investigated as therapeutic agents in neuropharmacology, and also as biomarkers in mood regulation, inflammation…”
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Bonding Analyses, Formation Energies, and Vibrational Properties of M−R2dtc Complexes (M = Ag(I), Ni(II), Cu(II), or Zn(II)) by Georgieva, I, Trendafilova, N

“…Detailed theoretical studies based on density functional theory (DFT)/B3LYP calculations of dimethyl- and diethyldithiocarbamate complexes of Ni(II), Cu(II),…”
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First principles study of structure and properties of La- and Mn-modified BiFeO3 by Antonov, V., Georgieva, I., Trendafilova, N., Kovacheva, D., Krezhov, K.

“…First principles calculations have been performed to study the effects of the La3+ and Mn3+ substitutions in the multiferroic BiFeO3. The real compositions…”
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Synthesis, characterization and anticonvulsant activity of new azobenzene-containing VV-hemorphin-5 bio photoswitch by Todorov, Petar T., Peneva, Petia N., Georgieva, Stela I., Tchekalarova, Jana, Vitkova, Victoria, Antonova, Krassimira, Georgiev, Anton

“…A novel analog of VV-hemorphin-5 containing azobenzene moiety has been synthesized and investigated for anticonvulsant activity in relation to its E → Z…”
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Excited State Properties of 7-Hydroxy-4-methylcoumarin in the Gas Phase and in Solution. A Theoretical Study by Georgieva, I, Trendafilova, N, Aquino, A, Lischka, H

“…TDDFT/B3LYP and RI-CC2 calculations with different basis sets have been performed for vertical and adiabatic excitations and emission properties of the lowest…”
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Factors influencing emigration decisions among Bulgarian health professionals by Georgieva, I

“…Abstract Background Migration patterns of health professionals are influenced by a variety of factors, including personal, economic, social, political, and…”
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Formation of 1,2:3,4-Diepoxybutane-Specific Hemoglobin Adducts in 1,3-Butadiene Exposed Workers by Boysen, Gunnar, Georgieva, Nadia I., Bordeerat, Narisa K., Šram, Radim J., Vacek, Pamela, Albertini, Richard J., Swenberg, James A.

“…1,3-Butadiene (BD) is an important industrial chemical that is classified as a human carcinogen. BD carcinogenicity has been attributed to its metabolism to…”
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DFT modeling and spectroscopic study of metal–ligand bonding in La(III) complex of coumarin-3-carboxylic acid by Mihaylov, Tz, Trendafilova, N., Kostova, I., Georgieva, I., Bauer, G.

“…The binding mode of coumarin-3-carboxylic acid (HCCA) to La(III) is elucidated at experimental and theoretical level. The complexation ability of the…”
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