Results 51 to 60 of about 142,915 (284)

Mode-Voltage Constrained Control for Adaptive Optics System

IEEE Photonics Journal
In the adaptive optics system of astronomical observation, the deformable mirror and the tip/tilt mirror are coupled during the correction process.
Ruitao Wang, Youming Guo, Nanfei Yan, Ying Yang, Lanqiang Zhang, Qiong Tu, Lingxiao Li, Changhui Rao   +7 more
doaj   +1 more source

The anti‐CRISPR protein AcrIE8.1 inhibits the type I‐E CRISPR‐Cas system by directly binding to the Cascade subunit Cas11

FEBS Letters, EarlyView.
In this study, we present the structure of AcrIE8.1, a previously uncharacterized anti‐CRISPR protein that inhibits the type I‐E CRISPR‐Cas system. Through a combination of structural and biochemical analyses, we demonstrate that AcrIE8.1 directly binds to the Cas11 subunit of the Cascade complex to inhibit the CRISPR‐Cas system.
Young Woo Kang, Hyun Ho Park
wiley   +1 more source

An update of the on-sky performance of the Layer-Oriented wave-front sensor for MAD

, 2010
The Multi-conjugate Adaptive optics Demonstrator, MAD, successfully demonstrated on sky the MCAO technique both in Layer Oriented and Star Oriented modes. As results of the Guaranteed Time Observations in Layer Oriented mode quality astronomy papers have
Arcidiacono, Carmelo, Falomo, Renato, Farinato, Jacopo, Gullieuszik, Marco, Lombini, Matteo, Moretti, Alessia, Piotto, Giampaolo, Ragazzoni, Roberto   +7 more
core   +1 more source

On-sky wide field adaptive optics correction using multiple laser guide stars at the MMT [PDF]

, 2008
We describe results from the first astronomical adaptive optics system to use multiple laser guide stars, located at the 6.5-m MMT telescope in Arizona. Its initial operational mode, ground-layer adaptive optics (GLAO), provides uniform stellar wavefront
Baranec, Baranec, Baranec, Baranec, Boccas, Casali, Christoph Baranec, Craig Kulesa, Don McCarthy, Egner, Ellerbroek, Freed, Gavel, Georges, Gilmozzi, Hinz, Keith Powell, Lloyd-Hart, Lloyd-Hart, Lloyd-Hart, Lloyd-Hart, Marchetti, Martin, McCarthy, Michael Hart, Miguel Snyder, Milton, N. Mark Milton, Pickering, Putnam, Rigaut, Stalcup, Szeto, Thomas Stalcup, Tokovinin, Vaitheeswaran, Velur, Verin, Vidhya Vaitheeswaran, Wildi, Wizinowich   +40 more
core   +2 more sources

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

ESL-YOLO: Small Object Detection with Effective Feature Enhancement and Spatial-Context-Guided Fusion Network for Remote Sensing

Remote Sensing
Improving the detection of small objects in remote sensing is essential for its extensive use in various applications. The diminutive size of these objects, coupled with the complex backgrounds in remote sensing images, complicates the detection process.
Xiangyue Zheng, Yijuan Qiu, Gang Zhang, Tao Lei, Ping Jiang   +4 more
doaj   +1 more source

Production of Phase Screens for Simulation of Atmospheric Turbulence

, 2012
The ability to simulate atmospheric turbulence in the lab is a crucial part of testing and developing astronomical adaptive optics technology. We report on the development of a technique for creating phase plates, which involves the strategic application
Dillon, Daren, Gavel, Don, Rampy, Rachel, Thomas, Sandrine   +3 more
core   +1 more source

A large‐scale retrospective study in metastatic breast cancer patients using circulating tumour DNA and machine learning to predict treatment outcome and progression‐free survival

Molecular Oncology, EarlyView.
There is an unmet need in metastatic breast cancer patients to monitor therapy response in real time. In this study, we show how a noninvasive and affordable strategy based on sequencing of plasma samples with longitudinal tracking of tumour fraction paired with a statistical model provides valuable information on treatment response in advance of the ...
Emma J. Beddowes, Mario Ortega Duran, Solon Karapanagiotis, Alistair Martin, Meiling Gao, Riccardo Masina, Ramona Woitek, James Tanner, Fleur Tippin, Justine Kane, Jonathan Lay, Anja Brouwer, Stephen‐John Sammut, Suet‐Feung Chin, Davina Gale, Dana W. Y. Tsui, Sarah‐Jane Dawson, Nitzan Rosenfeld, Maurizio Callari, Oscar M. Rueda, Carlos Caldas   +20 more
wiley   +1 more source

Infrared Small Target Detection via Multidirectional Local Gravitational Force and Level-Line Connectivity

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Infrared small target detection is significantly challenged by residual high-intensity background edges and a low signal-to-noise ratio. These issues hinder accurate target differentiation from the background and heighten the risk of false alarms.
Xuying Hao, Xianyuan Liu, Yujia Liu, Yijuan Qiu, Yunjing Zhang, Yi Cui, Tao Lei   +6 more
doaj   +1 more source

An Adaptive Optics Census of Companions to Northern Stars Within 25 pc\n with Robo-AO [PDF]

, 2022
Maïssa Salama, Carl Ziegler, Christoph Baranec, Michael C. Liu, Nicholas M. Law, Reed Riddle, Todd J. Henry, Jennifer G. Winters, Wei‐Chun Jao, James Ou, Arcelia Hermosillo Ruiz   +10 more
openalex   +1 more source