Results 51 to 60 of about 302,870 (324)

Optical linear polarization in ultra cool dwarfs: A tool to probe dust in the ultra cool dwarf atmospheres

, 2009
Aims.Recent studies have detected linear polarization in L dwarfs in the optical I band. Theoretical models have been developed to explain this polarization. These models predict higher polarization at shorter wavelengths.
Ackerman, Allard, Bailer-Jones, Basri, Berger, Burrows, Burrows, Burrows, Chabrier, Chandrasekhar, Chiu, Cooper, Cruz, E. L. Martín, Goldman, Golimowski, H. Bouy, Helling, Helling, Kirkpatrick, Knapp, M. R. Zapatero Osorio, Marley, Ménard, N. Phan-Bao, Patten, R. Tata, Reid, Reiners, S. Sengupta, Schmidt, Sengupta, Sengupta, Sengupta, Tsuji, Tsuji, Tsuji, Woitke, Woitke, Zapatero Osorio   +39 more
core   +1 more source

Albedo heterogeneity on the surface of (1943) Anteros [PDF]

, 2009
We have investigated the effect of rotation on the polarization of scattered light for the near-Earth asteroid (1943) Anteros using the Dual Beam Imaging Polarimeter on the University of Hawaii's 2.2 m telescope.
Akimov, Binzel, Broglia, Broglia, Cellino, Cellino, Cellino, Chapman, Degewij, Joseph Masiero, Kaasalainen, Lupishko, Masiero, Masiero, Masiero, Mitchell, Morbidelli, Muinonen, Muinonen, Nakayama, Pravec, Schmidt, Thomas, Veeder   +23 more
core   +1 more source

Momentum space tomographic imaging of photoelectrons

, 2009
We apply tomography, a general method for reconstructing 3-D distributions from multiple projections, to reconstruct the momentum distribution of electrons produced via strong field photoionization.
A Staudte, C Smeenk, D M Villeneuve, Kak A, Keldysh L V, L Arissian, P B Corkum, Smeenk C, Ullrich J   +8 more
core   +1 more source

Feasibility of imaging using Boltzmann polarization in nuclear Magnetic Resonance Force Microscopy [PDF]

, 2018
We report on Magnetic Resonance Force Microscopy measurements of the Boltzmann polarization of the nuclear spins in copper by detecting the frequency shift of a soft cantilever.
de Wit, Martin, Hoekstra, Freek, Oosterkamp, Tjerk, Wagenaar, Jelmer, Welker, Gesa   +4 more
core   +3 more sources

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Polarization of asteroid (387) Aquitania: the newest member of a class of large inversion angle asteroids

, 2008
We present new imaging polarimetric observations of two Main Belt asteroids, (234) Barbara and (387) Aquitania, taken in the first half of 2008 using the Dual-Beam Imaging Polarimeter on the University of Hawaii 2.2 meter telescope, located on Mauna Kea,
Alberto Cellino, Burbine, Burbine, Bus, Cellino, Cellino, Cellino, Cellino, Degtjarev, Dollfus, Gil-Hutton, Joseph Masiero, Masiero, Muinonen, Pravec, Schmidt, Shkuratov, Sunshine, Sunshine, Tedesco, Zappala, Zellner, Zolensky   +22 more
core   +1 more source

A possible use for polarizers in imaging atmospheric Cherenkov telescopes [PDF]

, 2001
Cherenkov radiation produced in Extensive Air Showers shows a net polarization. This article discusses its properties and physical origin, and proposes an arrangement of polarizers potentially useful for Imaging Atmospheric Cherenkov Telescopes.Comment ...
Cherenkov Telescopes, I. De La Callea, J. Cortinac, J. L. Contrerasb, V. Fonsecab   +4 more
core   +3 more sources

Modeling hepatic fibrosis in TP53 knockout iPSC‐derived human liver organoids

Molecular Oncology, EarlyView.
This study developed iPSC‐derived human liver organoids with TP53 gene knockout to model human liver fibrosis. These organoids showed elevated myofibroblast activation, early disease markers, and advanced fibrotic hallmarks. The use of profibrotic differentiation medium further amplified the fibrotic signature seen in the organoids.
Mustafa Karabicici, Soheil Akbari, Ceyda Caliskan, Canan Celiker, Ozden Oz, Leman Binokay, Gökhan Karakulah, Serif Senturk, Esra Erdal   +8 more
wiley   +1 more source

Reduced vascular leakage correlates with breast carcinoma T regulatory cell infiltration but not with metastatic propensity

Molecular Oncology, EarlyView.
A mouse model for vascular normalization and a human breast cancer cohort were studied to understand the relationship between vascular leakage and tumor immune suppression. For this, endothelial and immune cell RNAseq, staining for vascular function, and immune cell profiling were employed.
Liqun He, Chiara Testini, Neda Hekmati, Altea Bonello, Aglaia Schiza, Emmanuel Nwadozi, Mia Phillipson, Carina Strell, Michael Welsh   +8 more
wiley   +1 more source

Lensless polarization camera for single-shot full-Stokes imaging

APL Photonics, 2022
Lensless cameras have recently emerged as a compact imaging system based on computational imaging with various multiplexing capabilities. Here, we propose a compact, low-cost, lensless camera that enables snapshot full-Stokes polarization imaging.
Nakkyu Baek, Yujin Lee, Taeyoung Kim, Jaewoo Jung, Seung Ah Lee   +4 more
doaj   +1 more source