Results 191 to 200 of about 38,078 (231)

Cardiovascular changes in parabolic flights assessed by ballistocardiography

2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2013
This paper presents a comparison of the cardiovascular changes observed in microgravity as compared to ground based measurements. The ballistocardiogram (BCG), the electrocardiogram (ECG) and the transthoracic impedance cardiogram (ICG) were recorded on five healthy subjects during the 57th-European Space Agency (ESA) parabolic flight campaign.
Delière, Quentin, Migeotte, Pierre-Francois, Neyt, Xavier, Funtova, Irina, Baevsky, Roman, Tank, Jens, Pattyn, Nathalie   +6 more
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Parabolic flight experiments with PK-4

Microgravity - Science and Technology, 2006
PK-4 is an experiment designed to investigate complex plasmas (low-temperature plasmas containing microparticles, e.g. dust grains) in a combined dc/rf discharge under microgravity conditions on board of the International Space Station. Within the 35th and 36th ESA parabolic flight campaigns first experiments under microgravity conditions in a ...
Thoma, M., Höfner, H., Kretschmer, M., Ratynskaia, S., Morfill, G., Usachev, A., Zobnin, A., Petrov, O., Fortov, V.   +8 more
openaire   +2 more sources

Lipoxygenase activity during parabolic flights.

Journal of gravitational physiology : a journal of the International Society for Gravitational Physiology, 2001
Experiments in Space clearly show that various cellular processes, such as growth rates, signaling pathways and gene expression, are modified when cells are placed under conditions of weightlessness. As yet, there is no coherent explanation for these observations, though recent experiments, showing that microtubule self-organization is gravity ...
Maccarrone M, Tacconi M, Battista N, Valgattarri F, Falciani P, Finazzi-Agro A   +5 more
openaire   +3 more sources

Personality Traits of People Attracted by Parabolic Flight

Aviation, Space, and Environmental Medicine, 2014
Studies have shown that members of expeditions in extreme environments differed on the basis of personality factors (e.g., they were highly competitive, higher on Extraversion and Conscientiousness) compared to the control population. In order to identify individuals who are likely to participate in extreme environments, the aim of the present study ...
Collado, Aurélie, Monfort, Vincent, Hainaut, Jean-Philippe, Rosnet, Elisabeth, Bolmont, Benoit   +4 more
openaire   +4 more sources

Acute Hemodynamic Responses to Weightlessness During Parabolic Flight

The Journal of Clinical Pharmacology, 1991
Pilots and astronauts experience fluid shifts in variable gravity. Acute effects of fluid shifts on the cardiovascular system were monitored on NASA's KC‐135 aircraft during parabolic flight The variability of R‐R intervals in the electrocardiogram was measured as an indication of vagal cardiac neural activity.
C N, Mukai, C M, Lathers, J B, Charles, B S, Bennett, M, Igarashi, S, Patel   +5 more
openaire   +2 more sources

Geometric visual illusions in microgravity during parabolic flight

NeuroReport, 2005
This investigation explores whether the absence of gravitational information in a microgravity environment affects the perception of several classical visual illusions based on the arrangement of horizontal and vertical lines. Because the perception of horizontal and vertical orientation changes in microgravity, our prediction was that the strength of ...
Villard, Eric, Garcia-Moreno, Francesc Tintó, Peter, Nicolas, Clément, Gilles   +3 more
openaire   +3 more sources

Cardiovascular Function and Gravity Transitions during Parabolic Flight

2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007
Cardiovascular function and gravity transitions during parabolic flight.
Andre E, Aubert, Frank, Beckers, Kurt, Cockuyt, Jiexin, Liu, Bart, Verheydenrst   +4 more
openaire   +2 more sources

Cerebral vasoconstriction precedes orthostatic intolerance after parabolic flight

Brain Research Bulletin, 2000
The effects of brief but repeated bouts of micro- and hypergravity on cerebrovascular responses to head-up tilt (HUT) were examined in 13 individuals after (compared to before) parabolic flight. Middle cerebral artery mean flow velocity (MCA MFV; transcranial Doppler ultrasound), eye level blood pressure (BP) and end tidal CO(2) (P(ET)CO(2)) were ...
J M, Serrador, J K, Shoemaker, T E, Brown, M S, Kassam, R L, Bondar, T T, Schlegel   +5 more
openaire   +2 more sources

Complex Plasmas under Microgravity Conditions: Parabolic Flights

Physica Scripta, 2001
Parabolic flights – short time µg-flights of 25 s each – are used to determine the parameter ranges for the upcoming long term experiment on complex plasmas on the International Space Station (ISS) – the Plasma Crystal-Experiment (PKE). The experimental results of approximately 170 parabolic flights conducted in 1999 are summarised.
Hubertus M. Thomas, Dirk D. Goldbeck, Tanja Hagl, Alexei V. Ivlev, Uwe Konopka, Gregor E. Morfill, Hermann Rothermel, Robert S?tterlin, Milenko Zuzic   +8 more
openaire   +1 more source

Parabolic Flights @ Home

Microgravity Science and Technology, 2010
Paul Gerke Hofmeister, Jürgen Blum
openaire   +1 more source