Results 61 to 70 of about 486,911 (258)

Study of the Extraterrestrial Materials in Antarctica (VI) : Cosmic Dust Collected from the Glacier Ice of the Meteorite Ice Field, Yamato Mountains

open access: yesAntarctic Record, 1976
Black spherical microparticles, glassy microparticles and other irregular-shaped particles were collected from the glacier ice, sampled in December 1974, of the Meteorite Ice Field, Yamato Mountains.
Sadayo YABUKI, Keizo YANAI, Makoto SHIMA
doaj   +1 more source

Compliant Robotics in Space: A Prospective Review of Soft and Deformable Systems for Space Missions

open access: yesAdvanced Intelligent Systems, EarlyView.
Compliant robots are increasingly becoming integral to space exploration due to their adaptability, flexibility, and lightweight design. This article reviews categories such as soft, reconfigurable, and hyper‐redundant robots and their evolving role in enhancing space missions.
Hamed Rahimi Nohooji, Holger Voos
wiley   +1 more source

Laboratory Study of Dust Mobilization on Airless Planetary Bodies in the Solar Wind Plasma

open access: yesThe Planetary Science Journal
Dust charging, and the subsequent mobilization and transport, have been suggested to explain a number of unresolved and unusual features observed on airless planetary surfaces.
A. Cabra, X. Wang, M. Horányi
doaj   +1 more source

Ist Phenylnitren ein fehlendes Bindeglied in der Bildung polyzyklischer aromatischer Stickstoffheterozyklen?

open access: yesAngewandte Chemie, EarlyView.
Ein neuer Bildungsweg für polyzyklische aromatische Stickstoffheterozyklen (PANH) wurde gefunden. Die Reaktion von Phenylnitren mit dem Propargylradikal führt zu Chinolin und belegt, dass Nitrene geeignete Vorläufer zum Einbau von Stickstoffheteroatomen sind.
Rahel Arns   +6 more
wiley   +1 more source

Experimental Phase Functions of Millimeter-sized Cosmic Dust Grains [PDF]

open access: yes, 2017
We present the experimental phase functions of three types of millimeter-sized dust grains consisting of enstatite, quartz, and volcanic material from Mount Etna, respectively.
O. Muñoz   +6 more
semanticscholar   +1 more source

Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles?

open access: yesAngewandte Chemie International Edition, EarlyView.
A new formation pathway for polycyclic aromatic nitrogen heterocycles (PANHs) has been found. The reaction of phenylnitrene and the propargyl radical leads to quinoline, proving that nitrenes are suitable precursors for nitrogen incorporation mechanisms.
Rahel Arns   +6 more
wiley   +1 more source

Multi‐Century Grindstone Quarrying at Brumby Yard, Queensland

open access: yesArchaeology in Oceania, EarlyView.
ABSTRACT The timing and duration of prehistoric quarrying is poorly understood within Australia, with limited ages available for quarries owing to the difficulties in dating these rock‐sediment constructions. We report the first multi‐sample, optically stimulated luminescence ages from quarry pits in Brumby Yard, an Aboriginal grindstone quarry ...
Kieran McGee   +4 more
wiley   +1 more source

Early Results from GLASS-JWST. XVI. Discovering a Bluer z ∼ 4–7 Universe through UV Slopes

open access: yesThe Astrophysical Journal Letters, 2023
We use the GLASS-JWST Early Release Science NIRCam parallel observations to provide a first view of the UV continuum properties of NIRCam/F444W selected galaxies at 4 < z < 7.
Themiya Nanayakkara   +22 more
doaj   +1 more source

COSMIC DUST AGGREGATION WITH STOCHASTIC CHARGING [PDF]

open access: yesThe Astrophysical Journal, 2013
The coagulation of cosmic dust grains is a fundamental process which takes place in astrophysical environments, such as presolar nebulae and circumstellar and protoplanetary disks. Cosmic dust grains can become charged through interaction with their plasma environment or other processes, and the resultant electrostatic force between dust grains can ...
Matthews, Lorin Swint.   +2 more
openaire   +4 more sources

GAMA/G10-COSMOS/3D-HST: the 0 < z < 5 cosmic star formation history, stellar-mass, and dust-mass densities [PDF]

open access: yes, 2017
We use the energy-balance code MAGPHYS to determine stellar and dust masses, and dust corrected star-formation rates for over 200,000 GAMA galaxies, 170,000 G10-COSMOS galaxies and 200,000 3D-HST galaxies.
S. Driver   +32 more
semanticscholar   +1 more source

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