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81.
Hair cortisol concentrations in New Zealand white rabbits subjected to surgery
Tanja Peric, Antonella Comin, Mirco Corazzin, Marta Montillo, Federico Canavese, Marco Stebel, Alberto Prandi, 2018, original scientific article

Abstract: The aim of this study was to assess hair cortisol concentrations in New Zealand white rabbits (Oryctolagus cuniculus) that were subjected to relocation and surgery to evaluate HPA-axis activity; in addition, we used this marker of cortisol secretion to evaluate the allostatic load of animals undergoing surgery. After a period of acclimatisation, which lasted 40 days from their arrival at the enclosure, 19 rabbits were subjected to T1–T12 dorsal arthrodesis (RS), 19 were sham-operated (SS), and 19 were non-operated (CON). Hair samples were collected at the time of arrival (ST1) at the animal facility, and seven other sets of hair samples were collected at 40-day intervals from the same area of skin for a period of 240 days as re-shaved hair (anagen phase): immediately before surgery (ST2) and after the surgery (ST3, ST4, ST5, ST6, ST7, and ST8). The transition from the rabbitry to the animal breeding facility led to a significant increase in cortisol concentration (ST2) in all of the groups. At ST3, the RS group presented higher cortisol concentrations than those of the SS group and the CON group. At ST4, the experimental groups showed similar values that remained constant until ST8. The results show that the management of rabbits undergoing surgery should be evaluated very carefully, and hair cortisol concentrations may provide a means of avoiding the dangerous cumulative effects of additional stressors close to surgery.
Keywords: animal welfare, cortisol, hair, HPA axis, rabbit, surgery
Published in RUNG: 09.02.2018; Views: 3972; Downloads: 0
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82.
PASSERBY BECOME SUPERNOVA HUNTERS IN KUNGSTRÄDGÅRDEN
Tanja Petrushevska, S. Papadogiannakis, Emir Karamehmetoglu, 2015, other performed works

Abstract: Fysik i Kungsträdgården is one of the major outreach events in Stockholm where scientists have the chance to show their research. This year the supernova group at the OKC invited the public to look for supernovae with us using the intermediate Palomar (Transient) Factory (iPTF) collaboration telescope in Palomar, California, U.S.A. Due to the time difference between Stockholm and California, we were able to look at live images as they were taken from the telescope, to search for new transient objects such as supernovae. The event was successful, bringing a lot of people from the park in central Stockholm to come and search with us.
Keywords: science outreach, supernova hunting for the public
Published in RUNG: 09.02.2018; Views: 3647; Downloads: 0
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83.
Supernovae seen through gravitational telescopes
Tanja Petrushevska, 2017, other performed works

Abstract: Galaxies, and clusters of galaxies, can act as gravitational lenses and magnify the light of objects behind them. The effect enables observations of very distant supernovae, that otherwise would be too faint to be detected by existing telescopes, and allows studies of the frequency and properties of these rare phenomena when the universe was young. Under the right circumstances, multiple images of the lensed supernovae can be observed, and due to the variable nature of the objects, the difference between the arrival times of the images can be measured. Since the images have taken different paths through space before reaching us, the time-differences are sensitive to the expansion rate of the universe. One class of supernovae, Type Ia, are of particular interest to detect. Their well known brightness can be used to determine the magnification, which can be used to understand the lensing systems. I will also report our discovery of the first resolved multiply-imaged gravitationally lensed supernova Type Ia.
Keywords: lensed supernovae
Published in RUNG: 06.02.2018; Views: 2860; Downloads: 0
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84.
FYSIKSHOW: TOWARDS AN EVEN BRIGHTER FUTURE
Tanja Petrushevska, S. Papadogiannakis, Tor Kjellsson, other performed works

Abstract: Report of the Fysikshow activities of 2015-2016
Keywords: physics outreach with experiments
Published in RUNG: 06.02.2018; Views: 3072; Downloads: (1 vote)
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85.
SUMMER SCHOOL AT FYSIKUM
Tanja Petrushevska, other performed works

Abstract: This summer, for two weeks, 120 high school students (out of 750 applicants) had the opportunity to taste how research is done at Stockholm University. The students worked in small groups under the supervision of doctoral students in chemistry, physics, biology and geology. At the Physics department, the two PhD students Tanja Petrushevska and Seméli Papadogiannakis offered a project that involved supernovae and their host galaxies.
Keywords: summer school for high school students in astrophysics
Published in RUNG: 06.02.2018; Views: 3030; Downloads: 0
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86.
PM SPECIAL – ALLDELES NY UPPTÄCKT INOM SUPERNOVOR OCH GRAVITATIONSLINSNING
Tanja Petrushevska, Katarina Bendtz, other performed works

Abstract: I dagarna offentliggjordes att astrofysikerna på (iPTF) Intermediate Palomar Transient Factory detekterat en supernova typ 1a som vars ljus just nu böjs av en galax. Fenomenet kallas ”gravitational lensing” och är en effekt av att rumtiden kröks av massiva objekt, som vi diskuterade i Professor Magenta avsnitt om maskhål. Tanja Petrushevska är doktorand på Stockholms universitet och medlem av iPTF. Hon och de andra i iPTF skriver just nu på artikeln om upptäckten som hon berättar mer om i detta PM special!
Keywords: interview, astrophysics outreach
Published in RUNG: 06.02.2018; Views: 3145; Downloads: 0
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87.
Exponence, productivity and default pattern - A study of verb aspect in Serbo-Croatian
Marko Simonović, Tanja Samardžić, published scientific conference contribution abstract

Keywords: produktivnost srbohrvaščina prevzete besede aspekt
Published in RUNG: 05.02.2018; Views: 3344; Downloads: (1 vote)
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