Results 91 to 100 of about 22,697 (311)

Analysis of Orbit Accuracy for Non-cooperative Earth-Orbiting Objects

Open Astronomy, 2019
The atmospheric resistance and solar radiation pressure are the main sources of non-gravitational perturbations in orbit determination and prediction of non-cooperative earth-orbiting objects.
Jianrong Chen, Junfeng Li
doaj   +1 more source

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

FEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez, Mikael Oliveberg, Peter Brzezinski   +2 more
wiley   +1 more source

OPERATIONAL ASPECTS OF ORBIT DETERMINATION WITH GPS FOR SMALL SATELLITES WITH A SAR PAYLOAD.

, 2005
Scientific small satellite missions for remote sensing with Synthetic Aperture Radar (SAR) payloads or high accuracy optical sensors, pose very strict requirements on the accuracy of the reconstructed satellite positions, velocities and accelerations ...
Zehetbauer, Tino, Neff, Thomas, De Florio, Sergio   +2 more
core  

Refined orbit determination with differential algebra

, 2022
LAUREA MAGISTRALEIl presente lavoro propone un metodo alternativo per risolvere il Refined Orbit Determination. Storicamente, gli algoritmi esistenti dedicati a risolverlo erano, e sono tutt'oggi, basati sulla propagazione ripetuta di una serie di ...
CAVA PÉREZ, JOSÉ
core  

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

FEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace, Alyssa Borges, Charles Arnaud, Tove Karlsson, Nina K. Bröker, Stefanie Barbirz, Marta Bally   +6 more
wiley   +1 more source

Accuracy Assessment of SGP4 Orbit Information Conversion into Osculating Elements

, 2013
The SGP4 model is one of the analytical orbit models applied for the orbit prediction using TLE orbit information. For the orbit accuracy improvement, a model conversion was performed to apply a more precise model. Assuming that a TLE data set is the
Aida, Saika, Kirschner, Michael
core  

Sentinel-1A - First precise orbit determination results [PDF]

, 2017
Sentinel-1A is the first satellite of the European Copernicus programme. Equipped with a Synthetic Aperture Radar (SAR) instrument the satellite was launched on April 3, 2014.
Peter-Contesse, H., Hugentobler, U., D. Escobar, Peter, H., Escobar, D. (author), Simons, W.J.F., Arnold, Daniel, D. Arnold, Hackel, S., Peter-Contesse, H. (author), Otten, M., Jäggi, Adrian, Hugentobler, U. (author), Jäggi, Adrian (author), J. Fernández, Simons, W.J.F. (author), Otten, Michiel, P. Féménias, Visser, P.N.A.M., Visser, P., Simons, Wim, Visser, Pieter, Simons, W., P. Visser, Hackel, S. (author), A. Jäggi, Escobar, D., Fernández, JJ, Wermuth, M., Visser, P.N.A.M. (author), H. Peter, Féménias, P., M. Wermuth, Hugentobler, Urs, M. Otten, Arnold, D, Wermuth, M. (author), U. Hugentobler, S. Hackel, Arnold, D (author), Ayuga, F., Féménias, P. (author), F. Ayuga, Féménias, Pierre, Otten, M. (author), Escobar, Diego, Peter, Heike, Fernández, JJ (author), W. Simons, Fernandez, J., Wermuth, Martin, Ayuga, F. (author), Hackel, Stefan, Fernández, Jaime   +53 more
core   +1 more source

Orbit Determination Error Analysis for the KOMPSAT [PDF]

Journal of Astronomy and Space Sciences, 1998
Orbit error analysis was performed for the GPS navigation solutions and ground station tracking data of the KOMPSAT (Korea Multi-Purpose SATellite), which will be launched in 1999 for cartography of Korean peninsula as main mission. A least square method
Jeong-Sook Lee, Byoung-Sun Lee
doaj  

Angle-Only Cooperative Orbit Determination Considering Attitude Uncertainty. [PDF]

Sensors (Basel), 2023
Shi Y, Wang J, Liu C, Wang Y, Xu Q, Zhou X.   +5 more
europepmc   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

FEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source