Results 61 to 70 of about 17,221,339 (259)

VLT/MUSE Detection of the AB Aurigae b Protoplanet with Hα Spectroscopy

The Astrophysical Journal Letters
We analyze high-contrast, medium-spectral-resolution H _α observations of the star AB Aurigae using the Very Large Telescope's Multi Unit Spectroscopic Explorer (MUSE).
Thayne Currie, Jun Hashimoto, Yuhiko Aoyama, Ruobing Dong, Misato Fukagawa, Takayuki Muto, Erica Dykes, Mona El Morsy, Motohide Tamura   +8 more
doaj   +1 more source

JWST high-contrast spectroscopy with speckle modelling: Atmospheric retrievals of the T-dwarf companion HD 19467 B

Astronomy & Astrophysics
Context. High-contrast medium-resolution spectroscopy with JWST can resolve molecular and isotopic features in cool substellar atmospheres, but for close-in companions, the extracted spectra can be biased by wavelength-dependent residual stellar ...
González Picos D., van der Post T., de Regt S., Ruffio J.-B., Grasser N., Snellen I. A. G.   +5 more
doaj   +1 more source

Off-resonance magnetisation transfer contrast (MTC) MRI using fast field-cycling (FFC) [PDF]

, 2010
Peer ...
Lurie, David J, Choi, Chang-Hoon, Davies, Gareth R   +2 more
core   +1 more source

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

FEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source

Mapping human cerebral blood flow with high-density, multi-channel speckle contrast optical spectroscopy

Communications Biology
Recently, speckle contrast optical spectroscopy (SCOS) enabled non-invasive, high signal-to-noise-ratio (SNR) human cerebral blood flow (CBF) measurements, relevant for both neuroscience and clinical monitoring of diseases with CBF dysregulation.
Byungchan Kenny. Kim, Alexander C. Howard, Tom Y. Cheng, Jessica E. Anderson, Bernhard B. Zimmermann, Eric Hazen, Laura Carlton, Mitchell Robinson, Marco Renna, Meryem A. Yucel, Stefan A. Carp, Maria Angela Franceschini, David A. Boas, Xiaojun Cheng   +13 more
doaj   +1 more source

Direct observation and analysis of york-shell materials using low-voltage high-resolution scanning electron microscopy: Nanometal-particles encapsulated in metal-oxide, carbon, and polymer

APL Materials, 2014
Nanometal particles show characteristic features in chemical and physical properties depending on their sizes and shapes. For keeping and further enhancing their features, the particles should be protected from coalescence or degradation. One approach is
Shunsuke Asahina, Mitsuo Suga, Hideyuki Takahashi, Hu Young Jeong, Carolina Galeano, Ferdi Schüth, Osamu Terasaki   +6 more
doaj   +1 more source

Advanced design and experimental validation of MRI contrast agents for fluid pressure mapping using microbubbles [PDF]

, 2009
This work is related to monitoring fluid pressure using Magnetic Resonance Imaging or MRI and includes numerical simulations and experimental MRI. The nature of this study is such that techniques other than MRI have been extensively used to assess the ...
Morris, RH, Morris, Robert H
core  

Loss of IGF‐1R impairs DNA‐PKcs recruitment to chromatin leading to defective end‐joining

Molecular Oncology, EarlyView.
IGF‐1R promotes radioresistance by facilitating DNA‐PKcs recruitment to chromatin, enabling non‐homologous end‐joining (NHEJ) repair of double‐strand breaks. Inhibition or loss of IGF‐1R disrupts this recruitment to damage sites, driving compensatory reliance on microhomology‐mediated end‐joining (MMEJ) repair.
Matthew O. Ellis, Jack V. Mills, Wojciech Niedzwiedz, Valentine M. Macaulay   +3 more
wiley   +1 more source

JWST-TST High Contrast: First Direct Spectroscopy of GJ 504 b Reveals Clouds and Possible Metal Enrichment

The Astronomical Journal
Characterizing the coldest directly imaged companions through direct spectroscopy has only recently become possible with the James Webb Space Telescope.
Aneesh Baburaj, Jean-Baptiste Ruffio, Marshall Perrin, Jerry W. Xuan, William O. Balmer, Yayaati Chachan, Quinn M. Konopacky, Travis S. Barman, Mathilde Mâlin, Kielan K. W. Hoch, Emily Rickman, Kimberly Ward-Duong, Laurent Pueyo, Julien H. Girard, Isabel Rebollido, Alexis Bidot, Christine Chen, Kadin Worthen, Cicero Lu, Jens Kammerer, Roeland P. van der Marel, Nikole K. Lewis, Jeff Valenti, Sara Seager, Chris Stark, Rémi Soummer, Jay Anderson, Charles-Philippe Lajoie, Mark Clampin, C. Matt Mountain   +29 more
doaj   +1 more source

Relating the cortical visual contrast gain response to spectroscopy-measured excitatory and inhibitory metabolites in people who experience migraine.

PLoS ONE, 2022
ObjectiveThis study aimed to determine whether the visual response to flickering checkerboard patterns measured using electroencephalography (EEG) relate to excitatory or inhibitory metabolite levels measured using ultra-high (7Tesla/7T) magnetic ...
Yu Man Chan, Rebecca Glarin, Bradford A Moffat, Stefan Bode, Allison M McKendrick   +4 more
doaj   +1 more source