Results 31 to 40 of about 136,660 (228)

Comparison of measurements of the outer scale of turbulence by three different techniques [PDF]

, 2004
We have made simultaneous and nearly simultaneous measurements of L0, the outer scale of turbulence, at the Palomar Observatory by using three techniques: angle-of-arrival covariance measurements with the Generalized Seeing Monitor (GSM), differential ...
Borgnino, Julien, Chanan, Gary A., Dekany, Richard, Lane, Benjamin F., Martin, Francois, Schock, Matthias, Troy, Mitchell, Ziad, Aziz   +7 more
core   +1 more source

The Directly Imaged Planet around the Young Solar Analog 1RXS J160929.1-210524: Confirmation of Common Proper Motion, Temperature and Mass

, 2010
Giant planets are usually thought to form within a few tens of AU of their host stars, and hence it came as a surprise when we found what appeared to be a planetary mass (~0.008 Msun) companion around the 5 Myr-old solar mass star 1RXS J160929.1-210524 ...
Allard, Baraffe, Boss, Béjar, Carpenter, Chabrier, Cushing, Cutri, David Lafrenière, Greaves, Hauschildt, Helling, Itoh, Kratter, Lafrenière, Lafrenière, Lafrenière, Lafrenière, Lowrance, Luhman, Luhman, Marois, Marten H. van Kerkwijk, Oppenheimer, Padoan, Preibisch, Rafikov, Ray Jayawardhana, Rieke, Scharf, Schneider, Thalmann, Todorov, Veras, Weinberger, Wyatt, Zacharias   +36 more
core   +1 more source

The integration of local chromatic motion signals is sensitive to contrast polarity [PDF]

, 2011
Peer reviewedPublisher ...
ALEXA RUPPERTSBERG, Brainard, JASNA MARTINOVIC, Kaiser, MARCO BERTAMINI, SOPHIE M. WUERGER, STEPHANIE MALEK, Wehrhahn   +7 more
core   +1 more source

‘They Need to Hear You Say It’: Healthcare Professionals’ Perspectives on Barriers and Enablers to End‐of‐Life Discussions With Adolescents and Young Adults With Cancer

Pediatric Blood &Cancer, EarlyView.
ABSTRACT End‐of‐life conversations with adolescents and young adults (AYAs) with cancer rarely occur without the guidance of healthcare professionals. As a part of the ‘Difficult Discussions’ study, focused on palliative care and advance care planning discussions with AYAs with cancer, we investigated the factors that healthcare professionals identify ...
Justine Lee, Holly Evans, Claire E. Wakefield, Antoinette Anazodo, Richard J. Cohn, Brittany C. McGill, Elizabeth A. Lobb, Lori Wiener, Madeleine L. Juhrmann, Ursula M. Sansom‐Daly   +9 more
wiley   +1 more source

Measurement of Atmospheric Coherence Length from a Shack–Hartmann Wavefront Sensor with Extended Sources

Photonics
Free Space Optical Communication (FSOC) is a wireless communication method that utilizes laser beams for high speed and secure data transmission.
Junrui Zhang, Yuling Zhao, Leqiang Yang, Jie Liu, Wenyu Wang, Zhengwei Li, Jianli Wang, Tao Chen   +7 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Estimation of Day-Time Seeing Changes at Huairou Solar Observing Station Based on Neural Networks from 1989 to 2010

Universe
Seeing is a key factor affecting the image quality of astronomical observations and can be quantitatively described by the Fried parameter r0. The larger the r0 value (in unit of cm), the better the seeing conditions.
Xing Hu, Shangbin Yang, Tengfei Song, Xingming Bao, Wenjun Sun, Yuanyong Deng, Yu Liu, Mingyu Zhao   +7 more
doaj   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source