Results 71 to 80 of about 143,162 (326)

Results of the attitude reconstruction for the UniSat-6 microsatellite using in-orbit data [PDF]

, 2016
UniSat-6 is a civilian microsatellite that was launched in orbit on the 19th of June, 2014. Its main mission consisted in the in-orbit release of a number of on-board carried Cubesats and in the transmission to the UniSat-6 ground station of telemetry ...
Chantal Cappelletti, Crassidis, Crassidis, Farrell, Farrenkopf, Filippo Graziani, Kim, Lefferts, Markley, Nascetti, Simone Battistini, Vilán   +11 more
core   +3 more sources

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

FEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang, Grace Du, Charity Yongo‐Luwawa, Angelina Lu, Brett Kinrade, Kim Munro, Karl E. Klose, William D. Lubell, Peter Davies, Shuaiqi Guo   +9 more
wiley   +1 more source

Stability Limits of Circumbinary Planets: Is There a Pile-up in the Kepler CBPs?

, 2018
The stability limit for circumbinary planets (CBPs) is not well defined and can depend on initial parameters defining either the planetary orbit or the inner binary orbit. We expand on the work of Holman & Wiegert (1999, AJ 117, 621) to develop numerical
Haghighipour, Nader, Kaib, Nathan, Kostov, Veselin, Quarles, Billy, Satyal, Suman   +4 more
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Independent analysis of the orbits of Pioneer 10 and 11

, 2009
Independently developed orbit determination software is used to analyze the orbits of Pioneer 10 and 11 using Doppler data. The analysis takes into account the gravitational fields of the Sun and planets using the latest JPL ephemerides, accurate station
Anderson J. D., Ho C., Montenbruck O., Moyer T. D., Mudgway D. J., Press W. H., Scheffer L. K., Sovers O. J., VIKTOR T. TOTH   +8 more
core   +2 more sources

The role of histone modifications in transcription regulation upon DNA damage

FEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

Impact of the Initial State on BDS Real-Time Orbit Determination Filter Convergence

Remote Sensing, 2018
High precision real-time orbit of navigation satellites are usually predicted based on batch estimation solutions, which is highly dependent on the accuracy of the dynamic model.
Yun Qing, Yidong Lou, Yang Liu, Xiaolei Dai, Yi Cai   +4 more
doaj   +1 more source

Toward Accurate Physics‐Based Specifications of Neutral Density Using GNSS‐Enabled Small Satellites

Space Weather, 2021
Satellite‐atmosphere interactions cause large uncertainties in low‐Earth orbit determination and prediction. Thus, knowledge of and the ability to predict the space environment, most notably thermospheric mass density, are essential for operating ...
Eric K. Sutton, Jeffrey P. Thayer, Marcin D. Pilinski, Shaylah M. Mutschler, Thomas E. Berger, Vu Nguyen, Dallas Masters   +6 more
doaj   +1 more source

The Pan-STARRS Moving Object Processing System

, 2013
We describe the Pan-STARRS Moving Object Processing System (MOPS), a modern software package that produces automatic asteroid discoveries and identifications from catalogs of transient detections from next-generation astronomical survey telescopes.
Abe, Shinsuke, Armstrong, J. D., Bolin, Bryce, Bressi, Terry H., Burgett, W. S., Chambers, K. C., Chang, Daniel, Chastel, Serge, Chesley, Steve, Denneau, Larry, Farnocchia, Davide, Fitzsimmons, Alan, Granvik, Mikael, Grav, Tommy, Green, Denver, Heasley, J. N., Hodapp, K. W., Holman, Matthew, Holmes, Robert, Hsieh, Henry, Jedicke, Robert, Kaiser, N., Kleyna, Jan, Kubica, Jeremy, Lister, Tim, Magnier, Eugene. A., McMillan, Robert S., Micheli, Marco, Milani, Andrea, Morgan, J. S., Myers, Jonathan, Pierfederici, Francesco, Price, P. A., Ryan, Eileen V., Ryan, William H., Scotti, James V., Spahr, Tim, Sweeney, W. H., Tholen, David, Tonry, John L., Veres, Peter, Wainscoat, Richard, Waters, Chris, Williams, Gareth V.   +43 more
core   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

FEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira, Sílvia Arroz‐Madeira, Cláudio A. Franco, Sara Silva Pereira   +3 more
wiley   +1 more source