Results 61 to 70 of about 16,236 (260)

A changing-look AGN to be probed by X-ray polarimetry

, 2018
Active galactic nuclei (AGN) produce the highest intrinsic luminosities in the Universe from within a compact region. The central engine is thought to be powered by accretion onto a supermassive black hole.
González, Beatriz Agís, Hutsemékers, Damien, Miniutti, Giovanni   +2 more
core   +2 more sources

X-ray Observations of the Seyfert galaxy LB 1727 (1H 0419-577) [PDF]

, 1998
We discuss the properties of the Seyfert 1.5 galaxy LB 1727, also known as 1H 0419-577, from X-ray observations obtained by ASCA and ROSAT along with optical observations from earlier epochs. ASCA shows only modest (< 20%) variations in X-ray flux within
Arnaud K. A., Boller T., Boller T., D. Grupe, D. M. Crenshaw, George I. M., Grupe D., H. L. Marshall, I. M. George, K. M. Leighly, K. Nandra, Magdziarz M., Makishima K., Nandra K., Ohashi T., Pounds K. A., R. A. Remillard, Reynolds C. S., S. B. Kraemer, T. J. Turner, Thomas H.-C., Turner T. J.   +21 more
core   +2 more sources

Adjunctive Therapeutic Plasma Exchange in Refractory Adult‐Onset Still's Disease Complicated by Secondary Macrophage Activation Syndrome: A Single‐Center Experience

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Adult‐onset Still's disease (AOSD) complicated by macrophage activation syndrome (MAS) carries substantial mortality. The role of therapeutic plasma exchange (TPE) remains uncertain. Methods We retrospectively analyzed patients with AOSD‐MAS treated with TPE at a single‐center.
Masataka Ueda, Tomohiro Saito, Masahide Mizobuchi, Tomoki Shimomura, Saki Kawamori, Mitsuru Kawanishi, Natsuko Hattori, Jo Sugiyama, Satoshi Tsubata, Hanami Horiguchi, Kazuki Abe, Nao Iida, Yuki Kajio, Nao Oguro, Ryo Yanai, Hirokazu Honda   +15 more
wiley   +1 more source

ESO-Based Fuzzy Sliding-Mode Control for a 3-DOF Serial-Parallel Hybrid Humanoid Arm

Journal of Control Science and Engineering, 2014
This paper presents a unique ESO-based fuzzy sliding-mode controller (FSMC-ESO) for a 3-DOF serial-parallel hybrid humanoid arm (HHA) for the trajectory tracking control problem.
Yueling Wang, Runjie Shi, Hongbin Wang
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Adaptive Sliding Mode Control of an Electro-Hydraulic Actuator With a Kalman Extended State Observer

IEEE Access
Electro-hydraulic actuators (EHAs) are key linear drive components in various industrial applications. This paper addresses the challenge of achieving precise displacement tracking control for EHAs with only noisy displacement measurements.
Liming Lao, Pengzhan Chen
doaj   +1 more source

MoCA: A Monte Carlo code for Comptonisation in Astrophysics. I. Description of the code and first results

, 2018
We present a new Monte Carlo code for Comptonisation in Astrophysics (MoCA). To our knowledge MoCA is the first code that uses a single photon approach in a full special relativity scenario, and including also Klein-Nishina effects as well as ...
Bianchi, Stefano, Dovčiak, Michal, Matt, Giorgio, Tamborra, Francesco   +3 more
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Design of a Two order Active Disturbance Rejection Controller of a Stable Platform

Journal of Harbin University of Science and Technology, 2020
In order to reduce the interference of friction, electromagnetic back EMF, carrier motion coupling, model mismatch of the stable platform to keep stable of the line of sight in the inertial space, an active disturbance rejection controller (ADRC) is ...
ZHU Hai rong, LI Qi
doaj   +1 more source

Superbroad Component in Emission Lines of SS 433 [PDF]

, 2013
We have detected new components in stationary emission lines of SS 433; these are the superbroad components that are low-contrast substrates with a width of 2000--2500 km s-1 in He I $\lambda4922$ and H$\beta$ and 4000--5000 km s-1 in He II $\lambda4686$.
Barsukova, E. A., Fabrika, S. N., Goranskij, V. P., Medvedev, P. S., Vasiliev, V. V.   +4 more
core   +1 more source