Results 81 to 90 of about 305,396 (186)

Keck and Hubble Observations Show that MOA-2008-BLG-379Lb is a Super-Jupiter Orbiting an M Dwarf

The Astronomical Journal
We present high angular resolution imaging that detects the MOA-2008-BLG-379L exoplanet host star using Keck adaptive optics and the Hubble Space Telescope.
David P. Bennett, Aparna Bhattacharya, Jean-Philippe Beaulieu, Naoki Koshimoto, Joshua W. Blackman, Ian A. Bond, Clément Ranc, Natalia Rektsini, Sean K. Terry, Aikaterini Vandorou, Jessica R. Lu, Jean Baptiste Marquette, Greg Olmschenk, Daisuke Suzuki   +13 more
doaj   +1 more source

An Evaluation of Oral Subchronic Toxicity of Maizinol (UP165), a Zea mays Leaf Extract

Journal of Applied Toxicology, Volume 46, Issue 3, Page 932-949, March 2026.
ABSTRACT Maize (Zea mays) has been consumed by humans for millennia and represents the third most abundant crop grown globally. Maize and maize‐derived products have a long history of safe consumption from bread and other cereal products in human diets worldwide. Aside from key dietary components like carbohydrates and proteins, the corn plant contains
J. Kyle Weston, Barry S. Lynch, James A. Akingbasote   +2 more
wiley   +1 more source

Probing Disk Ice Content and Polycyclic Aromatic Hydrocarbon Emission through Multiband MagAO+Clio Images of HD 141569

The Astrophysical Journal
We present resolved images of the inner disk component around HD 141569A using the Magellan adaptive optics system with the Clio2 1–5 μ m camera, offering a glimpse of a complex system thought to be in a short evolutionary phase between protoplanetary ...
Jay K. Kueny, Alycia J. Weinberger, Jared R. Males, Katie M. Morzinski, Laird M. Close, Katherine B. Follette, Philip M. Hinz   +6 more
doaj   +1 more source

Peroxisome Proliferator‑Activated Receptor Gamma Coactivator‑1α Deficiency in Hippocampal Astrocytes Underlies Enhanced Fear Memory Retrieval in Male Posttraumatic Stress Disorder Model Mice

MedComm, Volume 7, Issue 3, March 2026.
PGC‑1α downregulation in hippocampal astrocytes disrupts ATP release and reduces connexin 43 (CX43) expression, impairing neuro‑glial communication. This promotes enhanced fear memory retrieval in PTSD. Chemogenetic activation of astrocytes or PGC‑1α agonist treatment rescues both CX43 expression and fear behavior, identifying astrocytic PGC‑1α/CX43 as
Juan Wang, Xiaoyu Chen, Daokang Chen, Shaojie Yang, Jingji Wang, Ming Chen, Guoqi Zhu   +6 more
wiley   +1 more source

Optical and Near‐Infrared Photometry of Distant Galaxy Clusters

The Astrophysical Journal Supplement Series, 2002
We present optical and near-infrared photometry of 45 clusters of galaxies at 0.1 < z < 1.3. Galaxy catalogs in each cluster were defined at the longest wavelenth available, generally the K-band, down to approximately two magnitudes below M*. We include finding chart images of the band used for catalog definition.
Stanford, S Adam, Eisenhardt, P, Dickinson, Mark, Holden, B, De Propris, Roberto   +4 more
openaire   +3 more sources

Drug Product Development of Lipid Nanoparticle‐Based mRNA Therapeutics and Vaccines

WIREs Nanomedicine and Nanobiotechnology, Volume 18, Issue 2, March/April 2026.
Overview of the development path from an mRNA–lipid nanoparticle (LNP) concept to a licensed drug product, covering LNP design, manufacturing process development, formulation, and analytical characterization. ABSTRACT Lipid nanoparticles (LNP) are currently the most relevant non‐viral delivery systems for mRNA and occasionally for smaller nucleic acids
Gideon Kersten, Eleonora Cerasoli, Bruce Kerwin, Olivia M. Merkel, Andrea Hawe   +4 more
wiley   +1 more source

Photometric and Spectral Characterization of Spacecraft Materials With Application to Lunar Trailblazer

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract If a spacecraft loses contact with Earth, ground‐based observatories can collect observations to assist the recovery effort by providing information on spacecraft location and state. Optical observations converted to a light curve of spacecraft magnitude over time show the spin period and/or orientation of the spacecraft.
A. V. Steckel, B. L. Ehlmann
wiley   +1 more source

Keck Observations in the INfrared of Taurus and ρ Oph Exoplanets And Ultracool Dwarfs (KOINTREAU) I: A Planetary-mass Companion and a Disk-obscured Stellar Companion Discovered in Taurus

The Astronomical Journal
We present the first discoveries from Keck Observations in the Infrared of Taurus and ρ Oph Exoplanets and Ultracool dwarfs (KOINTREAU), an adaptive optics imaging survey of young stars in the Taurus and ρ Oph star-forming regions using the Keck infrared
Samuel A. U. Walker, Michael C. Liu, Dimitri Mawet, Charlotte Bond, Mark Chun, Raquel A. Martinez, Mark W. Phillips, Jonathan P. Williams, Zhoujian Zhang, Bin B. Ren, Karl Stapelfeldt, Taichi Uyama, Nicole Wallack   +12 more
doaj   +1 more source

Cryo‐EM structures of a MexB–MexY chimeric efflux pump reveal that large open clefts are intrinsic to the MexY porter domain

Acta Crystallographica Section F, Volume 82, Issue 3, Page 83-93, March 2026.
In this study, cryo‐EM structures of the chimeric RND transporter MexBYB, composed of MexB and MexY, are presented, revealing distinct symmetric‐like and asymmetric conformations under apo and drug‐supplemented conditions. These structures show that the unusually large open clefts observed in MexBYB, similar to those in MexY, represent a unique ...
Jiye Wang, Kenta Tsutsumi, Mika Hirose, Ryosuke Nakashima, Takayuki Kato, Kunihiko Nishino, Atsushi Nakagawa, Eiki Yamashita   +7 more
wiley   +1 more source

Photometry and Spectroscopy of the GRB 970508 Optical Counterpart

Science, 1998
An optical transient within the error box of the gamma ray burst GRB 970508 was imaged 4 hours after the event. It displayed a strong ultraviolet excess, and reached maximum brightness 2 days later. The optical spectra did not show any emission lines, and no variations on time scales of minutes were observed for 1 hour during the decline phase ...
A J, Castro-Tirado, J, Gorosabel, N, Benitez, C, Wolf, R, Fockenbrock, E, Martinez-Gonzalez, H, Kristen, A, Broeils, H, Pedersen, J, Greiner, E, Costa, M, Feroci, L, Piro, F, Frontera, L, Nicastro, E, Palazzi, C, Bartolini, A, Guarnieri, N, Masetti, A, Piccioni, M, Mignoli, M, Wold, M, Lacy, K, Birkle, T, Broadhurst, S, Brandt, N, Lund   +26 more
openaire   +3 more sources