Results 51 to 60 of about 43,760 (283)

Long-term observations of the pulsars in 47 Tucanae - II. Proper motions, accelerations and jerks [PDF]

, 2017
This paper is the second in a series where we report the results of the long-term timing of the millisecond pulsars (MSPs) in 47 Tucanae with the Parkes 64-m radio telescope.
Camilo, F., D'Amico, N., Freire, P. C. C., Heinke, C. O., Jordan, C., Kramer, M., Lorimer, D. R., Lyne, A. G., Manchester, R. N., Ridolfi, A., Sarkissian, J., Torne, P.   +11 more
core   +2 more sources

Neuroinflammation in GAD65 Antibody‐Associated Epilepsy Measured Using [18F]DPA‐714 PET/MRI

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT The timing for initiating immunotherapy in patients with glutamic acid decarboxylase 65 (GAD65) antibody‐associated epilepsy is a challenge. We used the translocator protein radioligand [18F]DPA‐714 and PET to evaluate brain microglial activation.
Jingjing Chen, Yuying Zhang, Heyu Zhang, Jinming Zhang, Ningning Wang, Xintong Guo, Yicong Liu, Yue Liu, Xiangsong Zhang, Ziyi Chen, Guanzhong Ni   +10 more
wiley   +1 more source

Avalanches from charged domain wall motion in BaTiO3 during ferroelectric switching

APL Materials, 2020
We report two methods for direct observations of avalanches in ferroelectric materials during the motion of domain walls. In the first method, we use optical imaging techniques to derive changes in domain structures under an electric field.
Blai Casals, Guillaume F. Nataf, David Pesquera, Ekhard K. H. Salje   +3 more
doaj   +1 more source

Contact Lens with Moiré Patterns for High‐Precision Eye Tracking

Advanced Functional Materials, EarlyView.
This work presents a passive contact lens for high‐precision eye tracking, integrating a microscopic moiré grating label. The parallax‐induced shift of macroscopic moiré patterns enables angle measurement with 0.28° precision using a standard camera under ambient light.
Ilia M. Fradkin, Roman V. Kirtaev, Mikhail S. Mironov, Dmitriy V. Grudinin, Alexander A. Marchenko, Marina M. Chugunova, Valentin R. Solovei, Alexander V. Syuy, Andrey A. Vyshnevyy, Ilya P. Radko, Aleksey V. Arsenin, Valentyn S. Volkov   +11 more
wiley   +1 more source

Strong earthquakes and geomagnetic jerks: a cause-effect relationship?

Annals of Geophysics, 1995
Secular variation of the geomagnetic field observed at the Earth's surface has been found to undergo impulsive accelerations Gerks) lasting less than a few years. In this paper the relations between jerks and the occurrence of strong earthquakes (Ms ?
L. Alfonsi, F. Florindo
doaj   +1 more source

Performance Improvement during Attitude Motion of a Vehicle Using Aerodynamic-Surface-Based Anti-Jerk Predictive Controller

Sensors, 2023
This study presents the effectiveness of an anti-jerk predictive controller (AJPC) based on active aerodynamic surfaces to handle upcoming road maneuvers and enhance vehicle ride quality by mitigating external jerks operating on the body of the vehicle ...
Ejaz Ahmad, Iljoong Youn
doaj   +1 more source

High-Fidelity Archeointensity Results for the Late Neolithic Period From Central China [PDF]

, 2020
Archeomagnetism focuses on exploring high-resolution variations of the geomagnetic field over hundreds to thousands of years. In this study, we carried out a comprehensive study of chronology, absolute and relative paleointensity on a late Neolithic site
Cai, S, Deng, C, Pan, Y, Qin, H, Tauxe, L, Wang, W, Yang, L   +6 more
core   +1 more source

Learning Highly Dynamic Skills Transition for Quadruped Jumping Through Constrained Space

Advanced Robotics Research, EarlyView.
A quadruped robot masters dynamic jumps through constrained spaces with animal‐inspired moves and intelligent vision control. This hierarchical learning approach combines imitation of biological agility with real‐time trajectory planning. Although legged animals are capable of performing explosive motions while traversing confined spaces, replicating ...
Zeren Luo, Jiahui Zhang, Yimin Han, Ji Ma, Minghao Lu, Ioannis Havoutis, Peng Lu   +6 more
wiley   +1 more source

Spinal myoclonus: report of four cases

Arquivos de Neuro-Psiquiatria, 1993
Four cases of spinal myoclonus are described, three males and one female. The mean age was 51 years (28-75 years). The mean time between the onset of the myelopathy and the myoclonic jerks was 4.3 months (1-8 months).
James Pitágoras de Mattos, Ana Lúcia Z. Rosso, Antonio J. V. Carneiro, Sergio Novis   +3 more
doaj   +1 more source

Temporal Variations of Strength and Location of the South Atlantic Anomaly as Measured by RXTE [PDF]

, 2009
The evolution of the particle background at an altitude of ~540 km during the time interval between 1996 and 2007 is studied using the particle monitor of the High Energy X-ray Timing Experiment on board NASA's Rossi X-ray Timing Explorer.
Fürst, Felix, Lingenfelter, Richard, Pottschmidt, Katja, Rothschild, Richard E., Smith, David M., Wilms, Jörn   +5 more
core   +3 more sources