Search Results - "PENTTILÄ, Antti"

Taxonomic Analysis of Asteroids with Artificial Neural Networks by Luo, Nanping, Wang, Xiaobin, Gu, Shenghong, Penttilä, Antti, Muinonen, Karri, Liu, Yisi

“…We study the surface composition of asteroids with visible and/or infrared spectroscopy. For example, asteroid taxonomy is based on the spectral features or…”
Get full text

Rationale for BepiColombo Studies of Mercury’s Surface and Composition by Rothery, David A., Massironi, Matteo, Alemanno, Giulia, Barraud, Océane, Besse, Sebastien, Bott, Nicolas, Brunetto, Rosario, Bunce, Emma, Byrne, Paul, Capaccioni, Fabrizio, Capria, Maria Teresa, Carli, Cristian, Charlier, Bernard, Cornet, Thomas, Cremonese, Gabriele, D’Amore, Mario, De Sanctis, M. Cristina, Doressoundiram, Alain, Ferranti, Luigi, Filacchione, Gianrico, Galluzzi, Valentina, Giacomini, Lorenza, Grande, Manuel, Guzzetta, Laura G., Helbert, Jörn, Heyner, Daniel, Hiesinger, Harald, Hussmann, Hauke, Hyodo, Ryuku, Kohout, Tomas, Kozyrev, Alexander, Litvak, Maxim, Lucchetti, Alice, Malakhov, Alexey, Malliband, Christopher, Mancinelli, Paolo, Martikainen, Julia, Martindale, Adrian, Maturilli, Alessandro, Milillo, Anna, Mitrofanov, Igor, Mokrousov, Maxim, Morlok, Andreas, Muinonen, Karri, Namur, Olivier, Owens, Alan, Nittler, Larry R., Oliveira, Joana S., Palumbo, Pasquale, Pajola, Maurizio, Pegg, David L., Penttilä, Antti, Politi, Romolo, Quarati, Francesco, Re, Cristina, Sanin, Anton, Schulz, Rita, Stangarone, Claudia, Stojic, Aleksandra, Tretiyakov, Vladislav, Väisänen, Timo, Varatharajan, Indhu, Weber, Iris, Wright, Jack, Wurz, Peter, Zambon, Francesca

“…BepiColombo has a larger and in many ways more capable suite of instruments relevant for determination of the topographic, physical, chemical and mineralogical…”
Get full text

Polarimetry of Didymos–Dimorphos: Unexpected Long-term Effects of the DART Impact by Gray, Zuri, Bagnulo, Stefano, Granvik, Mikael, Cellino, Alberto, Jones, Geraint H., Kolokolova, Ludmilla, Moreno, Fernando, Muinonen, Karri, Muñoz, Olga, Opitom, Cyrielle, Penttilä, Antti, Snodgrass, Colin

“…We have monitored the Didymos–Dimorphos binary system in imaging polarimetric mode before and after the impact from the Double Asteroid Redirection Test…”
Get full text

Asteroid Photometric Phase Functions From Bayesian Lightcurve Inversion by Muinonen, Karri, Uvarova, Elizaveta, Martikainen, Julia, Penttilä, Antti, Cellino, Alberto, Wang, Xiaobin

“…Photometry is an important tool for characterizing the physical properties of asteroids. An asteroid’s photometric lightcurve and phase curve refer to the…”
Get full text

Toward a European Facility for Ground-Based Radar Observations of Near-Earth Objects by Pupillo, Giuseppe, Righini, Simona, Orosei, Roberto, Bortolotti, Claudio, Maccaferri, Giuseppe, Roma, Mauro, Mastrogiuseppe, Marco, Pisanu, Tonino, Schirru, Luca, Cicalò, Stefano, Tripodo, Antonio, Harju, Jorma, Penttilä, Antti, Virkki, Anne K., Bach, Uwe, Kraus, Alexander, Margheri, Alessio, Ghiani, Riccardo, Iacolina, Maria N., Valente, Giuseppe, Koschny, Detlef, Moissl, Richard, Sessler, Gunther

“…In this work, we present the preliminary results of radar observations of Near-Earth Objects (NEOs) carried out by European radio telescopes in the framework…”
Get full text

Scattering matrices of particle ensembles analytically decomposed into pure Mueller matrices by Muinonen, Karri, Penttilä, Antti

“…Scattering matrices of particle ensembles are analytically decomposed into sums of pure Mueller matrices. The ensembles are assumed to have equal numbers of…”
Get full text

Unintentional drowning in Finland 1970–2000: a population-based study by Lunetta, Philippe, Smith, Gordon S, Penttilä, Antti, Sajantila, Antti

“…Background While standard data on drowning reported by the World Health Organization (WHO) fails to provide a reliable picture of the burden of drowning in…”
Get full text

Coronary Artery Complicated Lesion Area Is Related to Functional Polymorphism of Matrix Metalloproteinase 9 Gene: An Autopsy Study by Pöllänen, Perttu J, Karhunen, Pekka J, Mikkelsson, Jussi, Laippala, Pekka, Perola, Markus, Penttilä, Antti, Mattila, Kari M, Koivula, Timo, Lehtimäki, Terho

“…Matrix metalloproteinase 9 (MMP9) is expressed in human atherosclerotic plaques, and the protein is localized in human coronary atherosclerotic lesions. The…”
Get full text

Radiative transfer with reciprocal transactions: Numerical method and its implementation by Väisänen, Timo, Markkanen, Johannes, Penttilä, Antti, Muinonen, Karri

“…We present a numerical method for solving electromagnetic scattering by dense discrete random media entitled radiative transfer with reciprocal transactions…”
Get full text

Age-dependent association of apolipoprotein e genotype with coronary and aortic atherosclerosis in middle-aged men: An autopsy study by ILVESKOSKI, E, PEROLA, M, KOIVULA, T, KARHUNEN, P. J, LEHTIMÄKI, T, LAIPPALA, P, SAVOLAINEN, V, PAJARINEN, J, PENTTILÄ, A, LALU, K. H, MÄNNIKKÖ, A, LIESTO, K. K

“…Apolipoprotein E (apoE) polymorphism is one of the genetic determinants of serum cholesterol values. The apoE epsilon4 allele has been associated with advanced…”
Get full text

Asteroid observations at low phase angles. IV. Average parameters for the new H , G 1 , G 2 magnitude system by Shevchenko, Vasilij G, Belskaya, Irina N, Muinonen, Karri, Penttilae, Antti, Krugly, Yurij N, Velichko, Feodor P, Chiorny, Vasilij G, Slyusarev, Ivan G, Gaftonyuk, Ninel M, Tereschenko, Igor A

“…We present new observational data for selected main-belt asteroids of different compositional types. The detailed magnitude-phase dependences including small…”
Get full text

European component of the AIDA mission to a binary asteroid: Characterization and interpretation of the impact of the DART mission by Michel, Patrick, Kueppers, Michael, Sierks, Holger, Carnelli, Ian, Cheng, Andy F., Mellab, Karim, Granvik, Mikael, Kestilä, Antti, Kohout, Tomas, Muinonen, Karri, Näsilä, Antti, Penttila, Antti, Tikka, Tuomas, Tortora, Paolo, Ciarletti, Valérie, Hérique, Alain, Murdoch, Naomi, Asphaug, Erik, Rivkin, Andy, Barnouin, Olivier, Bagatin, Adriano Campo, Pravec, Petr, Richardson, Derek C., Schwartz, Stephen R., Tsiganis, Kleomenis, Ulamec, Stephan, Karatekin, Ozgür

“…The European component of the joint ESA-NASA Asteroid Impact & Deflection Assessment (AIDA) mission has been redesigned from the original version called…”
Get full text

Optical Spectropolarimetry of Binary Asteroid Didymos–Dimorphos before and after the DART Impact by Bagnulo, Stefano, Gray, Zuri, Granvik, Mikael, Cellino, Alberto, Kolokolova, Ludmilla, Muinonen, Karri, Muñoz, Olga, Opitom, Cyrielle, Penttilä, Antti, Snodgrass, Colin

“…We have monitored the Didymos–Dimorphos binary asteroid in spectropolarimetric mode in the optical range before and after the DART impact. The ultimate goal…”
Get full text

Platelet glycoprotein Ibα HPA-2 Met/VNTR B haplotype as a genetic predictor of myocardial infarction and Sudden cardiac Death by MIKKELSSON, Jussi, PEROLA, Markus, PENTTILÄ, Antti, KARHUNEN, Pekka J

“…Background — Sudden cardiac death (SCD) is one of the leading manifestations of coronary heart disease in early middle age. Platelet glycoprotein (GP) Ib-IX-V…”
Get full text

Laboratory spectroscopy of meteorite samples at UV-vis-NIR wavelengths: Analysis and discrimination by principal components analysis by Penttilä, Antti, Martikainen, Julia, Gritsevich, Maria, Muinonen, Karri

“…•Meteorite samples are measured with the University of Helsinki integrating-sphere UV-vis-NIR spectrometer.•The spectral measurements are transformed with the…”
Get full text

Deep learning-based asteroid surface temperature evaluation from disk-resolved near-infrared spectra for thermal excess correction by Lind, Leevi, Penttilä, Antti, Riihiaho, Kimmo A., MacLennan, Eric, Pölönen, Ilkka

“…Near-Earth asteroids can become warm enough to emit radiation at near-infrared wavelengths, close to 2.5 ​μm. Thermal radiation can interfere with reflectance…”
Get full text

Optical Constants of Martian Dust Analogs at UV–Visible–Near-infrared Wavelengths by Martikainen, Julia, Muñoz, Olga, Jardiel, Teresa, Gómez Martín, Juan Carlos, Peiteado, Marco, Willame, Yannick, Penttilä, Antti, Muinonen, Karri, Wurm, Gerhard, Becker, Tim

“…We present an advanced light-scattering model to retrieve the optical constants of three Martian dust analogs: Johnson Space Center regolith simulant, Enhanced…”
Get full text

Spectral analysis of basaltic asteroids observed by the Gaia space mission by Oszkiewicz, Dagmara, Klimczak, Hanna, Carry, Benoit, Penttilä, Antti, Popescu, Marcel, Krüger, Joachim, Aron Keniger, Marcelo

“…There is a great deal of scientific interest in characterizing the basaltic asteroids (spectrally classified as V-types), as they are the key to understanding…”
Get full text

Mineralogy, reflectance spectra, and physical properties of the Chelyabinsk LL5 chondrite – Insight into shock-induced changes in asteroid regoliths by Kohout, Tomas, Gritsevich, Maria, Grokhovsky, Victor I., Yakovlev, Grigoriy A., Haloda, Jakub, Halodova, Patricie, Michallik, Radoslaw M., Penttilä, Antti, Muinonen, Karri

“…•Chelyabinsk meteorite is an LL5 chondrite.•Light-colored, dark-colored, and impact-melt lithologies are distinguished.•Shock darkening does not affect the…”
Get full text

Rigorous light-scattering simulations of nanophase iron space-weathering effects on reflectance spectra of olivine grains by Penttilä, Antti, Väisänen, Timo, Markkanen, Johannes, Martikainen, Julia, Kohout, Tomáš, Videen, Gorden, Muinonen, Karri

“…We present a multi-scale light-scattering model that is capable of simulating the reflectance spectra of a regolith layer. In particular, the model can be…”
Get full text