Results 101 to 110 of about 3,161,815 (352)

Performance of the square root information filter for navigation of the Mariner 10 spacecraft [PDF]

The use is described of a sequential least squares filter in the orbit determination for the Mariner Venus-Mercury (Mariner 10) spacecraft. The orbit determination strategy outlining the use of both the sequential filter and a conventional batch filter ...
Christensen, C. S.
core   +1 more source

Helioseismic determination of the solar gravitational quadrupole moment [PDF]

, 1998
One of the most well-known tests of General Relativity (GR) results from combining measurements of the anomalous precession of the orbit of Mercury with a determination of the gravitational quadrupole moment of the Sun J_2.
Pijpers, F. P.
core   +3 more sources

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Suboptimal filtering. Part 2 - Compensation for modeling errors in orbit determination problems Final report [PDF]

Compensation for dynamic and measurement model errors in real time orbit determination ...
Bailie, A. E., Jazwinski, A. H., Levine, N., Schmidt, S. F.   +3 more
core   +1 more source

Autonomous Orbit Determination System of Navigation Satellite Based on Spaceborne GPS Technology [PDF]

, 2022
Yang Li, Haote Ruan, Yunhan Zhang
openalex   +1 more source

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

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

Spin-orbit coupling in interacting quasi-one-dimensional electron systems

, 2000
We present a new model for the study of spin-orbit coupling in interacting quasi-one-dimensional systems and solve it exactly to find the spectral properties of such systems.
A. Altland, A. Luther, A. V. Moroz, A. V. Moroz, B. Dardel, B. Kardynal, C. H. W. Barnes, D. C. Mattis, E. I. Rashba, F. D. M. Haldane, G. Dresselhaus, J. B. Torrance, J. Luo, J. M. Luttinger, J. Nitta, J. Voit, K. A. Matveev, K. J. Thomas, K. Penc, K. V. Samokhin, L. F. Gladden, M. Bockrath, M. J. Kelly, S. Tomonaga, T. Hassenkam, T. Kimura   +25 more
core   +1 more source

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

FEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Non-linear orbit determination methods [PDF]

Nonlinear correction method for orbit determination using range, azimuth, and elevation ...
Nayfeh, A. H.
core   +2 more sources