Results 111 to 120 of about 41,807 (281)

Asteroid 2014 OL339: yet another Earth quasi-satellite

, 2014
Our planet has one permanently bound satellite -the Moon-, a likely large number of mini-moons or transient irregular natural satellites, and three temporary natural retrograde satellites or quasi-satellites. These quasi-moons -(164207) 2004 GU9, (277810)
Marcos, C. de la Fuente, Marcos, R. de la Fuente   +1 more
core   +1 more source

Opinion: Gavage Administration of MXene as a Route‐Specific Alternative to Intravenous Injection into the Bloodstream of Laboratory Animals for Reducing Systemic Nanotoxicity Risks in Immunosuppression and Post‐Transplantation Models with Bile Acid Modification

Advanced Healthcare Materials, EarlyView.
Recent studies reported immunosuppressive properties of specific MXene nanomaterials. Their intravenous injection into the bloodstream of laboratory animals has been a common delivery method to suppress systemic inflammation and prevent transplant rejection.
Alireza Rafieerad, M. Akif Rahman, Ahmad Amiri   +2 more
wiley   +1 more source

Long‐Term Variability of Mars' Exosphere Density Based on Precise Orbital Analysis of Mars Reconnaissance Orbiter and Mars Odyssey

Geophysical Research Letters
The variability of Mars exosphere over monthly to solar‐cycle scales at 251 and 412 km altitude is quantified by analysis of 41‐Ls mean densities derived from precise orbit determination of the Mars Reconnaissance Orbiter (MRO) and Mars Odyssey (MO ...
J. M. Forbes, S. L. Bruinsma, X. Zhang, J.‐C. Marty, S. Laurens   +4 more
doaj   +1 more source

N-dimensional Lomb Scargle Periodogram analysis of traveling ionospheric disturbances using ionosonde data

Frontiers in Astronomy and Space Sciences
There is a multitude of wave-like phenomena in Earth’s ionosphere and thermosphere such as acoustic waves, gravity waves, planetary waves, tides, and Traveling Ionospheric Disturbances (TIDs) which are the ionospheric manifestation of atmospheric waves ...
Joe Hughes, Ian Collett, Anastasia Newheart, Ryan Kelly, Walter Junk Wilson, Ken Obenberger, Russell Landry, Jonah Colman, Joe Malins   +8 more
doaj   +1 more source

Rice Fields Mapping in Fragmented Area Using Multi-Temporal HJ-1A/B CCD Images

Remote Sensing, 2015
Rice is one of the most important crops in the world; meanwhile, the rice field is also an important contributor to greenhouse gas methane emission. Therefore, it is important to get an accurate estimation of rice acreage for both food production and ...
Jing Wang, Jingfeng Huang, Kangyu Zhang, Xinxing Li, Bao She, Chuanwen Wei, Jian Gao, Xiaodong Song   +7 more
doaj   +1 more source

A Survey for Satellites of Venus

, 2009
We present a systematic survey for satellites of Venus using the Baade-Magellan 6.5 meter telescope and IMACS wide-field CCD imager at Las Campanas observatory in Chile.
Alemi, Anonymous, Bills, Blacklock, Brasser, Burns, Canup, Canup, Chadwick A. Trujillo, Counselman, Donnison, Gladman, Gladman, Gladman, Hamilton, Hill, Holman, Innanen, Jewitt, Kavelaars, Kuiper, Kumar, Landolt, Livingston, Malcuit, McCord, Mikkola, Mikkola, Muinonen, Murray, Nicholson, Nicholson, Rawal, Russell, Scholl, Scott S. Sheppard, Sheppard, Sheppard, Sheppard, Sheppard, Singer, Stern, Tabachnik, Veverka, Ward, Warell, Wiegert, Yokoyama   +47 more
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Finding the trigger to Iapetus' odd global albedo pattern: Dynamics of dust from Saturn's irregular satellites

, 2011
The leading face of Saturn's moon Iapetus, Cassini Regio, has an albedo only one tenth that on its trailing side. The origin of this enigmatic dichotomy has been debated for over forty years, but with new data, a clearer picture is emerging. Motivated by
Black, Blackburn, Bottke, Bottke, Buratti, Buratti, Burns, Burns, Burns, Burns, Castillo-Rogez, Clark, Cruikshank, Cruikshank, Daniel Tamayo, Denk, Dermott, Douglas P. Hamilton, Farinella, Gladman, Grav, Greenberg, Hamilton, Hamilton, Hamilton, Hamilton, Jewitt, Joseph A. Burns, Lavvas, Liang, Matthew M. Hedman, McCord, Nesvorný, Ostro, Porco, Roatsch, Sheppard, Sheppard, Spencer, Tholen, Thomas, Tomasko, Tosi, Turrini, Turrini, Verbiscer, Vyazovkin, Ward, Wetherill, Öpik   +49 more
core   +1 more source

Spin‐Split Edge States in Metal‐Supported Graphene Nanoislands Obtained by CVD

Advanced Materials, EarlyView.
Combining STM measurements and ab‐initio calculations, we show that zig‐zag edges in graphene nanoislands grown on Ni(111) by CVD retrieve their spin‐polarized edge states after intercalation of a few monolayers of Au. ABSTRACT Spin‐split states localized on zigzag edges have been predicted for different free‐standing graphene nanostructures.
Michele Gastaldo, Masoud Mansouri, Carlos Garcia‐Fernandez, Daniel Sánchez‐Portal, Aran Garcia‐Lekue, Gustavo Ceballos, Aitor Mugarza   +6 more
wiley   +1 more source

A Centroiding Algorithm for Point-source Trails

The Astronomical Journal
Astrometric measurements are significantly challenged by the relative motion between the point source and the telescope, primarily due to the difficulty in accurately determining the position of the point source at the mid-exposure moment.
Linpeng Wu, Qingfeng Zhang, Valéry Lainey, Nick Cooper, Nicolas Rambaux, Weiheng Zhu   +5 more
doaj   +1 more source