Results 71 to 80 of about 502,910 (303)

Molecular Hydrogen Kinematics in Cepheus A

, 2004
We present the radial velocity structure of the molecular hydrogen outflows associated to the star forming region Cepheus A. This structure is derived from doppler shift of the H_2 v=1-0 S(1) emission line obtained by Fabry-Perot spectroscopy.
David Hiriart, Doyon R., Irene Cruz-González, Koppenaal K., Larson R. B., Luis Salas, Porras A.   +6 more
core   +1 more source

PBF‐LB/M of Ti‐6Al‐4V: High‐Pressure Solution Treatment and Aging for Applications in a Sustainable Aerospace

Advanced Engineering Materials, EarlyView.
Additive manufacturing (AM) allows great geometric freedom for lightweight components. As parts are progressively optimized exploiting potentials in AM leading in smaller material cross sections, high pressure solution treating and aging (STA) treatments show an enormous potential for strongly improving material properties.
Mika León Altmann, Andre Danzig, Freerk Syassen, Rainer Fechte‐Heinen, Anastasiya Toenjes   +4 more
wiley   +1 more source

Unidirectional Tape‐Based Composites from Hemp and Pineapple Leaf Fiber: Mechanical Performance in Conventional and Bio‐Based Matrices

Advanced Engineering Materials, EarlyView.
The study investigates novel semi‐finished products made of unidirectionally arranged hemp or pineapple leaf fiber‐reinforced composites produced from different matrices. The materials are analyzed in terms of their mechanical and interfacial properties and void content.
Nina Graupner, Raja Bade, Valentin Ackermann, Roja M. Baumann, Corvin Bischoff, Jona F. Ebeling, Oskar Glenz, Marlo Groh, Jonathan Groth, Finja Hiller, Tom Hirschmüller, Felix Menke, Syntcha Ngantchou Lecdou, Mika Ohler, Daniel Rafii Vardiny, Darius Richter, Dario Röper, Henrik Schumacher, Theresa Stein, Benjamin Vorbeck, Elisabeth Wermter, Kay Kölzig, Jörg Müssig   +22 more
wiley   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

HD 119130 b Is Not an “Ultradense” Sub-Neptune

The Astronomical Journal
We present a revised mass measurement for HD 119130 b (aka K2-292 b), a transiting planet ( P = 17 days, R _p = ${2.63}_{-0.10}^{+0.11}$ R _⊕ ) orbiting a chromospherically inactive G dwarf, previously thought to be one of the densest sub-Neptunes known.
Joseph M. Akana Murphy, Rafael Luque, Natalie M. Batalha, Ilaria Carleo, Enric Palle, Madison Brady, Benjamin Fulton, Luke B. Handley, Howard Isaacson, Gaia Lacedelli, Felipe Murgas, Grzegorz Nowak, J. Orell-Miquel, Hannah L. M. Osborne, Vincent Van Eylen, María Rosa Zapatero Osorio   +15 more
doaj   +1 more source

Fluid-mechanical structure of a turbulent premixed V flame

Nihon Kikai Gakkai ronbunshu, 2015
The flow field of a turbulent premixed V flame has been closely examined by using a three-color six-beam LDV system. A bi-modal distribution, composed of the velocity fluctuations of both the high velocity mode and the low velocity mode, is observed ...
Yasuko YOSHIDA, Junichi FURUKAWA
doaj   +1 more source

PRECISION RADIAL VELOCITIES WITH CSHELL [PDF]

The Astrophysical Journal, 2011
31 pages, 3 figures, 2 tables, accepted for publication in ...
Crockett, Christopher J., Mahmud, Naved I., Prato, L., Johns-Krull, Christopher M., Jaffe, Daniel T., Beichman, Charles A.   +5 more
openaire   +3 more sources

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 more
wiley   +1 more source

Planets around active stars

, 2007
We present the results of radial velocity measurements of two samples of active stars. The first sample contains field G and K giants across the Red Giant Branch, whereas the second sample consists of nearby young stars (d < 150 pc) with ages between 10 -
A.P. Hatzes, A.P. Hatzes, A.P. Hatzes, D. Queloz, G.W. Henry, J. Setiawan, J. Setiawan, J. Setiawan, J. Setiawan, J. Setiawan, S. Frink, S. L da   +11 more
core   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source