Results 71 to 80 of about 611,346 (300)

Edible Pneumatic Battery for Sustained and Repeated Robot Actuation

Advanced Science, EarlyView.
This work presents an edible energy source and valve system to power soft, pneumatically driven edible robots. A chemical reaction between sodium bicarbonate and citric acid generates carbon dioxide gas, and a pressure‐triggered edible valve enables self‐repetitive motion of the edible actuator.
Bokeon Kwak, Shuhang Zhang, Alexander Keller, Qiukai Qi, Jonathan Rossiter, Dario Floreano   +5 more
wiley   +1 more source

SAGAbg. I. A Near-unity Mass-loading Factor in Low-mass Galaxies via Their Low-redshift Evolution in Stellar Mass, Oxygen Abundance, and Star Formation Rate

The Astrophysical Journal
Measuring the relation between star formation and galactic winds is observationally difficult. In this work we make an indirect measurement of the mass-loading factor (the ratio between the mass outflow rate and star formation rate) in low-mass galaxies ...
Erin Kado-Fong, Marla Geha, Yao-Yuan Mao, Mithi A. C. de los Reyes, Risa H. Wechsler, Yasmeen Asali, Nitya Kallivayalil, Ethan O. Nadler, Erik J. Tollerud, Benjamin Weiner   +9 more
doaj   +1 more source

Solid Harmonic Wavelet Bispectrum for Image Analysis

Advanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown, Mathilda Avirett‐Mackenzie, Carolin Villforth, Georgios Exarchakis   +3 more
wiley   +1 more source

Nitrogen in irregular galaxies

The Astrophysical Journal, 1990
A study of nitrogen in giant H II regions located within low-abundance irregular galaxies is presented. Both observations and theoretical models are used to examine variations in the abundance of nitrogen relative to oxygen in these galaxies. Analysis of these and previously published observations suggests that the use of low spectral resolution is the
openaire   +1 more source

Stellar Populations of Dwarf Irregular Galaxies [PDF]

Symposium - International Astronomical Union, 1996
We recently completed two-color CCD photometry of resolved stars in 11 dwarf irregular galaxies (Hopp & Schulte-Ladbeck, 1995, A&AS 111, 527), selected because of their relative isolation from massive galaxies in the Kran-Korteweg – Tammann sample (1979, AN 300, 181).
R.E. Schulte-Ladbeck, Ulrich Hopp
openaire   +1 more source

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, EarlyView.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

A High-Resolution Study of the H I Content of Local Group Dwarf Irregular Galaxy WLM [PDF]

, 2007
Dwarf irregular galaxies are unique laboratories for studying the interaction between stars and the interstellar medium in low-mass environments. We present the highest spatial resolution observations to date of the neutral hydrogen content of the Local ...
A. Kepley, E. Wilcots, D. Hunter, T. Nordgren   +3 more
semanticscholar   +1 more source

Understanding Degradation Mechanisms in Water‐In‐Salt Electrolyte. Part 2: Impact of the Electrochemical Parameters on the Cycling Behavior of LiFePO4 versus TiS2

Batteries &Supercaps, EarlyView.
Cycling water‐in‐salt batteries involves complex degradation processes that require multiprobe analysis. Using online electrochemical mass spectrometry (OEMS), postmortem X‐ray photoemission spectroscopy (XPS) (including hard‐XPS), and scanning electron microscopy (SEM), the degradation mechanisms are examined in composite electrodes (TiS2 and LiFePO4)
Célia Doublet, Théo Faverge, Vincent Martin, Hiram Castillo Michel, Jean‐Pascal Rueff, Marian Chatenet, Lauréline Lecarme, Claire Villevieille   +7 more
wiley   +1 more source

The Isaac Newton Telescope Monitoring project: Stellar population in the IC 10 dwarf irregular galaxy [PDF]

Iranian Journal of Astronomy and Astrophysics, 2019
We have conducted an optical monitoring survey of IC 10 dwarf irregular galaxy in the Local Group, using the Isaac Newton Telescope (INT) with the wide-field camera (WFC), to identify the Asymptotic Giant Branch stars (AGBs).
Mahtab Gholami, Mohammad Taghi Mirtorabi
doaj   +1 more source

Adaptive optics imaging and optical spectroscopy of a multiple merger in a luminous infrared galaxy

, 2007
(abridged) We present near-infrared (NIR) adaptive optics imaging obtained with VLT/NACO and optical spectroscopy from the Southern African Large Telescope (SALT) of a luminous infrared galaxy (LIRG) IRAS 19115-2124. These data are combined with archival
A. Adamo, A. Efstathiou, A. Kniazev, A. Zijlstra, Alberdi, Anders, Arribas, Barnes, Barnes, Bell, Bergvall, Bertin, Bohlin, Borne, Bournaud, Brosch, Buckley, Burgh, Bushouse, Chakrabarti, Chapman, Choi, Cole, Colina, Colina, Conselice, Coppin, Cui, Cullen, D. A. H. Buckley, D. Farrah, Dasyra, Dasyra, Davoodi, Denicoló, Di Matteo, E. B. Burgh, E. Romero-Colmenero, Efstathiou, Efstathiou, Elbaz, Farrah, Farrah, Farrah, Farrah, G. Östlin, Genzel, Giveon, Heckman, Hinz, Houck, Hughes, James, Jarrett, K. Nordsieck, Kawakatu, Kennicutt, Kim, Kobulnicky, L. Crause, Levenson, Lonsdale, Lonsdale, Lípari, Lípari, M. Still, Martin, Mattila, Mattila, Mihos, Mirabel, Monreal-Ibero, Monreal-Ibero, Murphy, Murphy, N. Loaring, Naab, Naab, Naab, O'Donaghue, P. H. Johansson, P. Lira, P. Väisänen, Pahre, Parra, Peng, Phillips, Pérez-Torres, Rhoads, Rieke, Rieke, Robertson, Rupke, S. Mattila, S. Ryder, Sanders, Sanders, Schwartz, Sirianni, Smail, Smith, Sparks, Spoon, Springel, Springel, Strauss, Sturm, Takata, Thronson, Valiante, Veilleux, Veilleux, Veilleux, Veilleux, Veilleux, Verma, Väisänen, Wahde, Wang, Wetzstein, Y. Hashimoto, Zasov   +121 more
core   +2 more sources