Results 151 to 160 of about 3,870 (308)

XRISM Resolves Relativistic Effects from the Innermost Accretion Disk in Serpens X-1

The Astrophysical Journal Letters
We present the first XRISM/Resolve observation of the persistently accreting neutron star (NS) low-mass X-ray binary Serpens X-1. The source was observed on 2024 October 17, for approximately 350 ks of elapsed time, resulting in 171 ks of exposure.
R. M. Ludlam, J. M. Miller, E. M. Cackett, J. A. García   +3 more
doaj   +1 more source

Nanoscale Secondary Ion Mass Spectrometry for Quantifying Membrane Fouling: Fouling Layer Structure and Chemical Interaction

Advanced Science, EarlyView.
Nanoscale secondary ion mass spectrometry (Nano SIMS) is established as a powerful analytical tool to visualize and quantify the membrane fouling layers. ABSTRACT Membrane technology has garnered considerable attention for applications in wastewater treatment and resource recovery. Nevertheless, membrane fouling remains a major barrier, yet the lack of
Mengfei Wu, Xinhua Wang, Pin Zhao, Weilong Song, Ming Xie   +4 more
wiley   +1 more source

Modelling and observations of molecules in discs around young stars [PDF]

, 2013
This thesis contains a study of molecules within circumstellar discs around young stars. Firstly, the chemistry of a disc around a young, Class 0 protostar is modelled.
Ilee, John David
core  

Examining the Relationship between the Persistent Emission and the Accretion Rate during a Type I X-Ray Burst

The Astrophysical Journal
The accretion flow onto a neutron star will be impacted by irradiation from a type I X-ray burst. The burst radiation exerts Poynting–Robertson (PR) drag on the accretion disk, leading to an enhanced mass accretion rate.
J. Speicher, D. R. Ballantyne, P. C. Fragile   +2 more
doaj   +1 more source

WS2 Optoelectronic Memristive Reservoir Enabling Ultra‐Low‐Power, Multi‐Task, and Environmentally Stable Neuromorphic Computing

Advanced Science, EarlyView.
WS2‐based in‐memory sensing reservoir computing integrates sensing, memory, and computation in one compact device. It achieves ∼94% N‐MNIST, ∼93% eye motion perception, and ∼89% speech recognition with ultra‐low energy (∼25.5 fJ/spike). The system shows stability at 95% humidity, endurance over 1.5M cycles, and supports synaptic plasticity, enabling ...
Dayanand Kumar, Hanrui Li, Divyanshu Divyanshu, Dhananjay D. Kumbhar, Manoj Kumar Rajbhar, Amit Singh, Abdul Momin Syed, Selma Amara, Gianluca Setti, Nazek El‐Atab   +9 more
wiley   +1 more source

A Brief Review for Quasi-Periodic Oscillations in Neutron-Star Low-Mass X-Ray Binaries [PDF]

, 2016
In accreting neutron star (NS) low-mass X-ray binaries (LMXBs), the turbulent flow in accretion disk may show magnetic structures. Its emission will vary in time due to inhomogeneous motions through and with the accretion flow. These emissions contribute
Jing Wang
core  

A Systematic Study of Millihertz Quasiperiodic Oscillations in GS 1826−238

The Astrophysical Journal
We performed a systematic investigation of millihertz quasiperiodic oscillations (mHz QPOs) in the low-mass X-ray binary GS 1826−238 observed with NICER and Insight-HXMT.
Hua Xiao, Long Ji, Sergey Tsygankov, Yupeng Chen, Shu Zhang, Zhaosheng Li   +5 more
doaj   +1 more source

Engineered Carbon Dots from a Traditional Herb Pair Orchestrate Concurrent Antioxidant and AP‐1‐Mediated Inflammation to Attenuate Renal Ischemia‐Reperfusion Injury

Advanced Science, EarlyView.
This study integrates two complementary traditional Chinese medicine components as precursors to synthesize bioactive AM‐AS@CDs. Compared with single‐component CDs, these dual‐component CDs exhibit enhanced antioxidant capacity and superior renoprotective effects.
Bixiao Liu, Fuying Zhu, Zhuqing Wang, Jiawen Chen, Xiaomiao Cui, Congzhong Yang, Yao Peng, Dengyuan Feng, Li Lu, Hui Wei, Xiaozhi Zhao   +10 more
wiley   +1 more source

GX 340+0: In and Out of Focus

The Astrophysical Journal
The Nuclear Spectroscopic Telescope Array (NuSTAR) enables detailed high-energy X-ray observations from 3–79 keV, but its performance can be constrained by telemetry saturation when observing bright sources, leading to reduced effective exposure times ...
S. Li, R. M. Ludlam, D. J. K. Buisson, M. Sudha, S. Rossland, G. Mastroserio, M. C. Brumback, J. A. García, B. W. Grefenstette, F. La Monaca, E. A. Saavedra, A. Di Marco   +11 more
doaj   +1 more source

Unity Quantum Yield of High‐Entropy Quantum Dots Composited With Photonic Crystals for Information Encryption

Advanced Science, EarlyView.
This study first extends the high‐entropy concept to I‐III‐VI quantum dots (QDs) and synthesizes CZCrGSe/ZnSe/ZnS core/shell/shell QDs with a record photoluminescence quantum yield (PLQY) of 100%. Their ZnSe/ZnS double shell efficiently passivates defects and boosts structural stability.
Maoyuan Huang, Ziqiang Tian, Binkun Xie, Haiyang Li, Bo Tan, Chang He, Shiliang Mei, Wanlu Zhang, Changchun Wang, Ruiqian Guo   +9 more
wiley   +1 more source