Results 121 to 130 of about 174,880 (353)

Gravitational self-force corrections to tidal invariants for particles on circular orbits in a Kerr spacetime [PDF]

, 2018
Donato Bini, Andrea Geralico
openalex   +1 more source

Matrix metalloproteinase‐9 regulates cell adhesion and membrane protrusive activity of ovarian cancer cells

FEBS Open Bio, EarlyView.
Matrix metalloproteinase‐9 (MMP9) drives ovarian cancer progression. Using MMP9‐null cells (M9‐KO) created from ovarian cancer cells, we found MMP9 loss did not block Epidermal Growth Factor (EGF)‐driven E‐cadherin dissolution or EMT but delayed and reduced EGF‐driven membrane protrusions. Transient MMP9 re‐expression drove membrane protrusion.
Claire Strauel, Sam Bennett, Natalie Ehlinger, Nelson Cook, Katelyn Marvin, Caleb L. Lines, Sam Reyes, Brooke Kirby, Shawn M. Ellerbroek   +8 more
wiley   +1 more source

Machine learning for orbit steering in the presence of nonlinearities

Journal of Synchrotron Radiation
Circular particle accelerators require precise beam orbit correction to maintain the beam's trajectory close to the ideal `golden orbit', which is centered within all magnetic elements of the ring, except for slight deviations due to installed ...
Simona Bettoni, Jonas Kallestrup, Güney Erin Tekin, Michael Böge, Romana Boiger   +4 more
doaj   +1 more source

Optimal Control of Low Propulsion Orbital Transfer Time [PDF]

فصلنامه علوم و فناوری فضایی, 2011
Within operational life of satellites according to their mission, need to change their operational orbits. This change can includes change in semi-major axis, inclination or plane of orbit (RAAN angle). For this propose, we can use Electrical Propulsion (
A. Ebrahimi, H. R. Fayazbakhsh
doaj  

Lyapunov Exponent and Charged Myers Perry Spacetimes

, 2013
We compute the proper time Lyapunov exponent for charged Myers Perry black hole spacetime and investigate the instability of the equatorial circular geodesics (both timelike and null) via this exponent.
Pradhan, Partha Pratim
core   +1 more source

Decreased cold‐sensing function of the transient receptor potential channel TRPM8 from tailed amphibians

FEBS Open Bio, EarlyView.
Despite frogs avoiding low temperatures, examination of four salamander species revealed that none avoided cold and all possessed cold tolerance. Functional analysis of TRPM8, a cold sensor, showed that all salamander TRPM8s had lost their cold sensitivity.
Tadahiro Sawao, Daiki Kobayashi, Shogo Hori, Osamu Saitoh   +3 more
wiley   +1 more source

Perturbations of circular synchronous satellite orbits [PDF]

Satellite drift maxima from synchronous inclined circular orbit due to ...
Dunn, R. L.
core   +1 more source

Stability analysis and quasinormal modes of Reissner Nordstr{\o}m Space-time via Lyapunov exponent

, 2016
We explicitly derive the proper time $(\tau)$ principal Lyapunov exponent ($\lambda_{p}$) and coordinate time ($t$) principal Lyapunov exponent ($\lambda_{c}$) for Reissner Nordstr{\o}m (RN) black hole (BH) . We also compute their ratio.
AE Motter, AM Lyapunov, B Mashhoon, BF Schutz, C Skokos, CM Claudel, D Pugliese, E Berti, F Pretorius, G Lukes Gerakopoulos, HP Nollert, JG Baker, KD Kokkotas, MR Setare, NJ Cornish, NJ Cornish, O Semerák, P Pradhan, P Pradhan, P Pradhan, PARTHAPRATIM PRADHAN, RA Konoplya, S Chandrashekar, S Iyer, S Iyer, V Cardoso, V Ferrari, V Ferrari, V Karas, VI Oseldec, X Wu, X Wu, Y Sota   +32 more
core   +1 more source

Systemic dysregulation of apolipoproteins in amyotrophic lateral sclerosis serum

FEBS Open Bio, EarlyView.
Amyotrophic lateral sclerosis (ALS) is a fatal disease that damages motor neurons. This study found that people with ALS show significant changes in blood fats and the proteins that carry them. Several apolipoproteins were higher, lipid balances were altered, and normal protein–lipid relationships were disrupted.
Finula I. Isik, Russell Pickford, Hannah C. Timmins, Olivier Piguet, Glenda M. Halliday, Matthew C. Kiernan, Woojin Scott Kim   +6 more
wiley   +1 more source

Highly relativistic spinning particle starting near $r_{ph}^{(-)}$ in a Kerr field

, 2011
Using the Mathisson-Papapetrou-Dixon (MPD) equations, we investigate the trajectories of a spinning particle starting near $r_{ph}^{(-)}$ in a Kerr field and moving with the velocity close to the velocity of light ($r_{ph}^{(-)}$ is the Boyer-Lindquist ...
A. Gorbatsievich, A. N. Aleksandrov, B. M. Barker, C. W. Misner, L. D. Landau, M. Mathisson, Mykola Fenyk, Oleksandr Stefanyshyn, Roman Plyatsko, S. Chandrasekhar, W. Tulczyjew, W. G. Dixon   +11 more
core   +1 more source