Results 121 to 130 of about 69,461 (285)

Protosolar D-to-H Abundance and One Part per Billion PH3 in the Coldest Brown Dwarf

The Astrophysical Journal Letters
The coldest Y spectral type brown dwarfs are similar in mass and temperature to cool and warm (∼200–400 K) giant exoplanets. We can therefore use their atmospheres as proxies for planetary atmospheres, testing our understanding of physics and chemistry ...
Melanie J. Rowland, Caroline V. Morley, Brittany E. Miles, Genaro Suarez, Jacqueline K. Faherty, Andrew J. Skemer, Samuel A. Beiler, Michael R. Line, Gordon L. Bjoraker, Jonathan J. Fortney, Johanna M. Vos, Sherelyn Alejandro Merchan, Mark Marley, Ben Burningham, Richard Freedman, Ehsan Gharib-Nezhad, Natasha Batalha, Roxana Lupu, Channon Visscher, Adam C. Schneider, T. R. Geballe, Aarynn Carter, Katelyn Allers, James Mang, Dániel Apai, Mary Anne Limbach, Mikayla J. Wilson   +26 more
doaj   +1 more source

MOLYBDENUM AND RUTHENIUM IN THE GALAXY

Odessa Astronomical Publications, 2018
We present a brief overview of the molybdenum and ruthenium present-day nucleosynthesis calculations  and abundance determinations in stars belonging to different substructures (populations) in the Galaxy.
T. V. Mishenina, T. I. Gorbaneva
doaj   +1 more source

The Relationship Between Interest Rates and Agricultural Commodity Price Dynamics

Agribusiness, EarlyView.
ABSTRACT The U.S. Federal Reserve has undertaken several interest rate interventions in the past decade. This study explores the relationship between U.S. corn and soybean prices and Federal Reserve monetary policy interventions, in the short and long run.
Zhining Sun, Ani L. Katchova
wiley   +1 more source

The stellar and substellar mass function in central region of the old open cluster Praesepe from deep LBT observations

EPJ Web of Conferences, 2011
Studies of the mass function of open clusters of different ages allow us to study the efficiency with which brown dwarfs are evaporated from clusters to populate the field.
Goldman B., Bailer-Jones C.A.L., Caballero J., Boudreault S., Wang W., Henning Th.   +5 more
doaj   +1 more source

Bayesian Optimization Guiding the Experimental Mapping of the Pareto Front of Mechanical and Flame‐Retardant Properties in Polyamide Nanocomposites

Advanced Intelligent Discovery, EarlyView.
Bayesian optimization enabled the design of PA56 system with just 8 wt% additives, achieving limiting oxygen index 30.5%, tensile strength 80.9 MPa, and UL‐94 V‐0 rating. Without prior knowledge, the algorithm uncovered synergistic effects between aluminum diethyl‐phosphinate and nanoclay.
Burcu Ozdemir, Miguel Hernández‐del‐Valle, Christina Schenk, De‐Yi Wang, Maciej Haranczyk   +4 more
wiley   +1 more source

Caby Photometry of the Hyades: Comparisons to the Field Stars

, 2002
Intermediate-band photometry of the Hyades cluster on the Caby system is presented for dwarf stars ranging from spectral type A through late K. A mean hk, b-y relation is constructed using only single stars without anomalous atmospheres and compared to ...
Alexander J. B., Barbara J. Anthony-Twarog, Bruce A. Twarog, Deming D., Edvardsson B., Favata F., Gronbech B., Judy Yu, Nissen P. E., Olsen E. H., Olsen E. H., Olsen E. H., Perryman M. A. C., Reglero V., Rocha-Pinto H. J., Schuster W. J., Schuster W. J., Van Bueren H. G.   +17 more
core   +1 more source

Hi‐LabSpermTracking: A Novel and High‐Quality Sperm Tracking Dataset with an Advanced Ensemble Detection and Tracking Approach for Real‐World Clinical Scenarios

Advanced Intelligent Systems, EarlyView.
This study presents Hi‐LabSpermTracking, a long‐duration, expert‐annotated sperm motility dataset for detection and tracking. It evaluates You Only Look Once version 8, Real‐Time Detection Transformer, and Simple Online and Realtime Tracking with a Deep Association Metric in three scenarios. The mean ensemble method improves tracking performance. Sperm
Abdulsamet Aktas, Gorkem Serbes, Hakkı Uzun, Merve Huner Yigit, Nizamettin Aydin, Hamza Osman Ilhan   +5 more
wiley   +1 more source

Rapid Access to an Enantioenriched Spiro Bisindole Directly from Indole and Acetone

Angewandte Chemie, EarlyView.
A catalytic enantioselective one‐pot “self‐assembly” strategy was developed for the exceedingly convenient access to a spiro bisindole directly from indole and acetone. The obtained enantiopure C2‐symmetric bisindole showed exceptional performance as a chiral backbone of diverse effective catalysts or ligands. Abstract Disclosed here is a “one‐pot self‐
Jing‐Yi Wang, Jie Lin, Chaoshen Zhang, Jianwei Sun   +3 more
wiley   +2 more sources

ROME. IV. An Arecibo Search for Substellar Magnetospheric Radio Emissions in Purported Exoplanet-hosting Systems at 5 GHz

The Astrophysical Journal
Plasma flow–obstacle interactions, such as those between an exoplanet’s magnetosphere and the host star’s stellar wind, may lead to detectable radio emissions.
Matthew Route
doaj   +1 more source

Genetic Distinctiveness of Endangered Dwarf Blue Sheep (Pseudois nayaur schaeferi): Evidence From Mitochondrial Control Region and Y-Linked ZFY Intron Sequences [PDF]

, 2001
Jun Feng
openalex   +1 more source