Results 41 to 50 of about 71,398 (288)
Follow-up imaging observations of comet 2I/Borisov [PDF]
, 2020 Follow-up imaging observations of the first detected interstellar comet 2I/Borisov are presented, which were carried out with the Schmidt-Teleskop-Kamera at the University Observatory Jena in 11 observing epochs in October and November 2019. The orbital solution of the comet, derived from the obtained astrometric measurements, confirms its highly ...
arxiv +1 more source
Data visualization and distinct features extraction of the comet Ison 2013
Iraqi Journal of Physics, 2019 The distribution of the intensity of the comet Ison C/2013 is studied by taking its histogram. This distribution reveals four distinct regions that related to the background, tail, coma and nucleus.
Salman. Z. Khalaf
doaj +1 more source
Direct Detection of Extra-Solar Comets is Possible [PDF]
Astron.J.130:1261-1266,2005, 2005 The dust tails of comets similar to Hale-Bopp can scatter as much optical light as does the Earth. Space-based observatories such as the Terrestrial Planet Finder or Darwin that will detect extra-solar terrestrial planets also will be able to detect extra-solar comets.
arxiv +1 more source
On the Formation of the Tails of Comets [PDF]
Scientific American, 1881 n ...
openaire +1 more source
Modification of comet-FISH technique by using temperature instead of chemical denaturation
MethodsX, 2014 Comet-FISH technique is an extension of commonly used comet assay. Its purpose is to determine whether primary DNA damage which comet assay detects occurred within a sequence of interest that is visualized by hybridization of fluorescent probe.
Marin Mladinic, Davor Zeljezic
doaj +1 more source
Zhongguo shipin weisheng zazhi, 2023 ObjectiveTo examine perfluorooctanoic acid （PFOA）-induced DNA damage using a combined in vivo and in vitro experiment.MethodsAcellular nuclear DNA damage was used as a model to test the damage induced by exposure to 0.00， 0.13， 0.25， and 0.50 mmol/L PFOA
WANG Qian +4 more
doaj +1 more source
Activity of 50 Long-Period Comets Beyond 5.2 AU [PDF]
, 2016 Remote investigations of the ancient solar system matter has been traditionally carried out through the observations of long-period (LP) comets that are less affected by solar irradiation than the short-period counterparts orbiting much closer to the Sun. Here we summarize the results of our decade-long survey of the distant activity of LP comets.
arxiv +1 more source
Advanced Materials, EarlyView.This review highlights recent progress in piezoelectric materials for regenerative medicine, emphasizing their ability to convert mechanical stimuli into bioelectric signals that promote tissue repair. Key discussions cover the intrinsic piezoelectric properties of biological tissues, co‐stimulation cellular mechanisms for tissue regeneration, and ...
Xinyu Wang +3 more
wiley +1 more source
Frontiers in Genetics, 2015 In the alkaline comet assay, cells are embedded in agarose, lysed, and then subjected to further processing including electrophoresis at high pH (>13). We observed very large variations of mean comet tail lengths of cell samples from the same population ...
Gunnar Brunborg
doaj +1 more source