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Litvinov, D. A. (author), Nunes, N. V. (author), Filetkin, A. I. (author), Bartel, N. (author), Gurvits, L. (author), Calves, G. Molera (author), Rudenko, V. N. (author), Zakhvatkin, M. V. (author)We present an improved model for the antenna phase center motion effect for high-gain mechanically steerable ground-based and spacecraft-mounted antennas that takes into account non-perfect antenna pointing. Using tracking data of the RadioAstron spacecraft we show that our model can result in a correction of the computed value of the effect...journal article 2021
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Jansen, Karin A. (author), Zhmurov, Artem (author), Vos, Bart E. (author), Portale, Giuseppe (author), Hermida-Merino, Daniel (author), Litvinov, Rustem I. (author), Kurniawan, Nicholas A. (author), Bras, Wim (author), Koenderink, G.H. (author)Fibrin is the major extracellular component of blood clots and a proteinaceous hydrogel used as a versatile biomaterial. Fibrin forms branched networks built of laterally associated double-stranded protofibrils. This multiscale hierarchical structure is crucial for the extraordinary mechanical resilience of blood clots, yet the structural...journal article 2020
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Shtork, Sergey I. (author), Litvinov, Ivan V. (author), Gorelikov, Evgeny Y. (author), Mitryakov, Andrey S. (author), Hanjalic, K. (author)The work reports on experimental study of flow and pressure pulsations in draft-tube of a laboratory air model of a Francis hydro-turbine operating over a broad range of regimes corresponding to different combinations of the runner rotation speed and flowrates. The velocity measurements using a computer-automated laser-Doppler anemometer and the...abstract 2018
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Litvinov, D.A. (author), Bach, U. (author), Bartel, N. (author), Belousov, K.G. (author), Bietenholz, M. (author), Biriukov, A.V. (author), Cimo, G (author), Duev, D. A. (author), Gurvits, L. (author), Gusev, A.V. (author), Haas, R (author), Kauts, V.L. (author), Kanevsky, B.Z. (author), Kovalenko, A.V. (author), Kronschnabl, G (author), Kulagin, V.V. (author), Lindqvist, Maria (author), Molera Calves, G (author), Neidhardt, A. (author), Plotz, C. (author), Pogrebenko, S. V. (author), Porayko, N.K. (author), Rudenko, V.N. (author), Sokolovsky, K. V. (author), Smirnov, A.I. (author), Stepanyants, V.A. (author), Yang, J. (author), Zakhvatkin, M.V. (author)A test of a cornerstone of general relativity, the gravitational redshift effect, is currently being conducted with the RadioAstron spacecraft, which is on a highly eccentric orbit around Earth. Using ground radio telescopes to record the spacecraft signal, synchronized to its ultra-stable on-board H-maser, we can probe the varying flow of time...conference paper 2016
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Popp, Thomas (author), De Leeuw, Gerrit (author), Bingen, Christine (author), Brühl, Christoph (author), Capelle, Virginie (author), Chedin, Alain (author), Clarisse, Lieven (author), Dubovik, Oleg (author), Grainger, Roy (author), Griesfeller, Jan (author), Heckel, Andreas (author), Kinne, Stefan (author), Klüser, Lars (author), Kosmale, Miriam (author), Kolmonen, Pekka (author), Lelli, Luca (author), Litvinov, Pavel (author), Mei, Linlu (author), North, Peter (author), Pinnock, Simon (author), Povey, Adam (author), Robert, Charles (author), Schulz, Michael (author), Sogacheva, Larisa (author), Stebel, Kerstin (author), Zweers, Deborah Stein (author), Thomas, Gareth (author), Tilstra, Lieuwe Gijsbert (author), Vandenbussche, Sophie (author), Veefkind, j. Pepijn (author), Vountas, Marco (author), Xue, Yong (author)Producing a global and comprehensive description of atmospheric aerosols requires integration of ground-based, airborne, satellite and model datasets. Due to its complexity, aerosol monitoring requires the use of several data records with complementary information content. This paper describes the lessons learned while developing and...journal article 2016