Results 61 to 70 of about 487,216 (307)
Aerospace, 2022 Flight dynamics is a topic often overlooked by operators of small satellites without propulsion systems, as two-line elements (TLE) are easily accessible and accurate enough for most ground segment needs.
Clément Jonglez +3 more
doaj +1 more source
Vacancy Driven Orbital and Magnetic Order in (K,Tl,Cs)$_y$Fe$_{2-x}$Se$_2$ [PDF]
Phys. Rev. B 84, 155107 (2011), 2011 We investigate the effects of the $\sqrt{5}\times\sqrt{5}$ Fe vacancy ordering on the orbital and magnetic order in (K,Tl,Cs)$_y$Fe$_{2-x}$Se$_2$ using a three-orbital ($t_{2g}$) tight-binding Hamiltonian with generalized Hubbard interactions. We find that vacancy order enhances electron correlations, resulting in the onset of a block antiferromagnetic
arxiv +1 more source
FEBS Letters, EarlyView.The glacier ice worm Mesenchytraeus solifugus survives year‐round at 0 °C. Its ATP6 subunit, which forms a regulatory component of the proton pore in mitochondrial ATP synthase, has a carboxy‐terminal extension not found in any other organism examined to date. Here, we show that fusion of this extension to the homologous AtpB protein in E. coli results
Truman Dunkley +2 more
wiley +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
, 2015 The prediction of stellar occultations by Transneptunian objects and Centaurs is a difficult challenge that requires accuracy both in the occulted star position as for the object ephemeris.
Assafin, M. +12 more
core +3 more sources
Two-dimensional orbital Hall insulators [PDF]
Phys. Rev. B 101, 075429 (2020), 2019 The orbital-Hall effect (OHE), similarly to the spin-Hall effect (SHE), refers to the creation of a transverse flow of orbital angular momentum that is induced by a longitudinally applied electric field. For systems in which the spin-orbit coupling (SOC) is sizeable, the orbital and spin angular momentum degrees of freedom are coupled, and an ...
arxiv +1 more source
FEBS Letters, EarlyView.In modular polyketide synthases, the dehydratase (DH) domain catalyzes the dehydration reaction of the β‐hydroxyacyl unit attached to the cognate acyl carrier protein (ACP) domain. However, it is unclear how DH interacts with ACP during the reaction. In this study, we identified DH–ACP interface residues, providing the first detailed insights into DH ...
Kaede Kotagiri +8 more
wiley +1 more source
Satellite Orbit Prediction Using Big Data and Soft Computing Techniques to Avoid Space Collisions
Mathematics, 2021 The number of satellites and debris in space is dangerously increasing through the years. For that reason, it is mandatory to design techniques to approach the position of a given object at a given time.
Cristina Puente +3 more
doaj +1 more source
Characteristics of the Kelch domain containing (KLHDC) subfamily and relationships with diseases
FEBS Letters, EarlyView.The Kelch protein superfamily includes 63 members, with the KLHDC subfamily having 10 proteins. While their functions are not fully understood, recent advances in KLHDC2's structure and role in protein degradation have highlighted its potential for drug development, especially in PROTAC therapies.
Courtney Pilcher +6 more
wiley +1 more source
Orbit Determination Accuracy Analysis of the Magnetospheric Multiscale Mission During Perigee Raise [PDF]
The Goddard Space Flight Center (GSFC) Flight Dynamics Facility (FDF) will provide orbit determination and prediction support for the Magnetospheric Multiscale (MMS) mission during the mission's commissioning period.
Morinelli P. +4 more
core +2 more sources