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| 1 | A calorimetric study of tin grown by reduction of SnCl2 with Mg显示文摘 | Avramova N Neykov N S Peneva S K | | 0，，： | 1 |
| 2 | Thermal properties and microhardness of HDPE/clay nanocomposites compatibilized by different functionalized polyethylenes显示文摘 | Minkova L Peneva Y Tashev E | 2009 | Polymer Testing2009，28，5： | 1 |
| 3 | Comparison of clustersfrom fuzzy numbers显示文摘 | Vania Peneva Ivan Popchev | 1998 | Fuzzy Sets and Systems1998，97，： | 1 |
| 4 | Thermal properties and microhardness of HDPE/clay nanocomposites compatibilized by different functionalized polyethylenes显示文摘 | MINKOVA L PENEVA Y TASHEV E | 2009 | Polymer Testing2009，28，5： | 1 |
| 5 | A calorimetric study of tin grown by reduction of SnC12 with Mg显示文摘 | Avramova N Neykov N S Peneva S K | 1996 | Journal of Physics D:Applied Physics1996，29，5： | 1 |
| 6 | Analysis of linkage between biochemical and morphological markers of 1R-,2R-,and 5R-chromosomes in rye with auto fertility mutations in main incompatibility loci显示文摘 | EGOROVA I A PENEVA T I | 2000 | Genetika2000，36，： | 1 |
| 7 | Properties of the aggregation operators related with fuzzy relations显示文摘 | PENEVA V POPCHEV I | 2003 | Fuzzy Sets and Systems2003，139，3： | 1 |
| 8 | Estimating the future burden ofcardiovascular disease and the value of lipid and blood pressure controltherapies in China显示文摘 | Stevens W Peneva D Li JZ | 2016 | BMC Health Serv Res2016，16，1： | 1 |
| 9 | Spatial patterns of variation in the composition and structure of nematode communities in relation to diferent microhabitats : a case study of quercas dalechampii ten forest显示文摘 | Lazarova S S Goede D R Peneva V K | 2004 | Soil Biology and Biochemistry2004，36，： | 1 |
| 10 | The recent evolution of the Aral Sea level and water properties:analysis of satellite,gauge and hydrometoorological data显示文摘 | Peneva E L Stanev E V Stanychni S V | 2004 | Journal of Marine Systems2004，47，14： | 1 |
| 11 | Oral hygiene status of children with impaired hearing显示文摘 | Doichinova L Peneva M | 2011 | Problems Of Dental Medicine2011，37，1： | 1 |
| 12 | Estimating the future burden of cardiovascular disease and the value of lipid and blood pressure control therapies in China显示文摘 | Stevens W Peneva D Li J | 2016 | BMC Health Serv Res2016，16，1： | 1 |
| 13 | Comparison of clusters from fuzzy numbers显示文摘 | Peneva V Popchev I | 1998 | Fuzzy Sets and Systems1998，97，1： | 1 |
| 14 | Assessment of food habits in children aged 6-12 years and the risk of caries 显示文摘 | Doichinova L Bakardjiev P Peneva M | 2015 | Biotechnol Biotechnol Equip2015，29，1： | 1 |
| 15 | Long-term V(RI) CCD photometry of pre-main-sequence stars in the association Cepheus OB3显示文摘Results from optical CCD photometric observations of 13 pre-main-sequence stars collected during the period from February 2007 to November 2020 are presented.These stars are located in the association Cepheus OB3,in the field of the young star V733 Cephei.Photometric observations,especially concerning the long-term variability of the stars,are missing in the literature.We present the first longterm V(RI)c monitoring for them,that cover 13 years.Results from our study indicate that all of the investigated stars manifest strong photometric variability.The presented paper is a part of our program for the photometric study of pre-main-sequence stars located in active star-forming regions. | Sunay Ibryamov Gabriela Zidarova Evgeni Semkov Stoyanka Peneva | 2021 | Research in Astronomy and Astrophysics2021，21，8： | 0 |
| 16 | Long-term Photometric Study of the Pre-main Sequence Star V1180 Cas显示文摘In this paper results from the optical photometric observations of the pre-main sequence star V1180 Cas are reported.The star is a young variable associated with the dark cloud Lynds 1340,located at a distance of 600 pc from the Sun in the star-forming region in Cassiopeia.V1180 Cas shows large amplitude variability,interpreted as a combination of accretion-induced and extinction-driven effects.Our data from VRI CCD photometric observations of the star were collected from September 2011 to February 2022.During our monitoring,we recorded several brightness dips with large amplitudes of up to 5 mag(I band).At the same time,increases in brightness over periods of several weeks have also been recorded.In this paper,we compare the photometric data obtained for V1180 Cas with observations of other low-mass pre-main sequence objects. | Asen Mutafov Evgeni Semkov Stoyanka Peneva Sunay Ibryamov | 2022 | Research in Astronomy and Astrophysics2022，22，12： | 0 |
| 17 | Long-term photometric behavior of the PMS stars V977 Cep and V982 Cep in the vicinity of NGC 7129显示文摘Long-term BV RI photometric light curves of the pre-main sequence stars V977 Cep and V982 Cep during the period from 2000 October to 2016 August are presented. The stars are located in the vicinity of the reflection nebula NGC 7129. Our photometric data show that both stars exhibit strong photometric variability in all optical passbands, which is typical for Classical T Tauri stars. Using our observational data we analyze the reasons for the observed brightness variations. In the case of V977 Cep we identify previously unknown periodicity in its light curve. | Sunay I. Ibryamov Evgeni H. Semkov Teodor R. Milanov Stoyanka P. Peneva | 2017 | Research in Astronomy and Astrophysics2017，17，2： | 0 |
| 18 | BV(RI )c photometric study of three variable PMS stars in the field of V733 Cephei显示文摘This paper reports results from the first long-term BV(RI)c photometric CCD observations of three variable pre-main-sequence stars collected during the period from February 2007 to January 2020. The investigated stars are located in the field of the PMS star V733 Cep within the Cepheus OB3 association. All stars from our study show rapid photometric variability in all-optical passbands. In this paper, we describe and discuss the photometric behavior of these stars and the possible reasons for their variability. In the light variation of two of the stars, we found periodicity. | Sunay Ibryamov Evgeni Semkov Stoyanka Peneva Kristina Gocheva | 2020 | Research in Astronomy and Astrophysics2020，20，12： | 0 |
| 19 | Long-term BV RI photometric light curves of 15 PMS stars in the star-forming region IC 5070显示文摘This paper reports results from the multicolor photometric observations of 15 pre-main sequence stars collected in the period September 2010-October 2017. The stars from our study are located in the star-forming HII region IC 5070. These objects were previously detected as either emission line stars, flare stars, T Tauri variables or Herbig Ae/Be stars. Photometric observations, especially concerning the long-term behavior of the objects, are missing in the literature. We present the first photometric monitoring for all stars from our study. The analysis of the obtained BV RI photometric data allows us to draw the conclusion that all investigated objects are variable stars. In the case of LkHα 146,we identified previously unknown periodicity in its photometric variability. | Sunay Ibryamov Evgeni Semkov Teodor Milanov Stoyanka Peneva | 2018 | Research in Astronomy and Astrophysics2018，18，11： | 0 |
| 20 | A long-term UBVRI photometric study of the pre-main sequence star V350 Cep显示文摘Results from UBVRI optical photometric observations of the pre-main sequence star V350 Cep during the period 2004-2014 are presented.The star was discovered in 1977 due to its remarkable increase in brightness by more than 5 mag(R).In previous studies,V350 Cep was considered to be a potential FUor or EXor eruptive variable.Our data suggest that during the period of observations the star maintains its maximum brightness with low amplitude photometric variations.Our conclusion is that V350 Cep was probably an intermediate object between FUors and EXors,similar to V1647 0ri. | Sunay Ibryamov Evgeni Semkov Stoyanka Peneva | 2014 | Research in Astronomy and Astrophysics2014，14，10： | 0 |
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