Results 51 to 60 of about 386,764 (302)

Boron-enhanced diffusion of boron from ultralow-energy boron implantation [PDF]

, 1998
The authors have investigated the diffusion enhancement mechanism of BED (boron enhanced diffusion), wherein the boron diffusivity is enhanced three to four times over the equilibrium diffusivity at 1,050 C in the proximity of a silicon layer containing a high boron concentration.
Agarwal, A., Eaglesham, D.J., Gossmann, H.J., Pelaz, L., Herner, S.B., Jacobson, D.C., Haynes, T.E., Erokhin, Y.E.   +7 more
openaire   +2 more sources

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Después de la pandemia: ¿antesala del socialismo o del “capitalismo recargado”?

Serviço Social & Sociedade, 2021
Resumo: Con más de un millón de muertos a causa del coronavirus a nivel mundial y casi 154.000 en Brasil, no quedan dudas que el orden mundial del pasado y, más que ello, las viejas formas de sociabilidad y organización de la vida económica han sido ya ...
Atilio Boron
doaj   +1 more source

Boronic acid and boronic ester containing polyoxometalates

Dalton Transactions, 2016
Three organoboron functionalized polyoxometalates have been synthesized using Schiff base chemistry including a boronic acid, its methyl ester and its trimethylene glycol ester.
Karoui, H, Ritchie, C
openaire   +4 more sources

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

Advanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu, Timon Steinhoff, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Christian Klose, Ludger Overmeyer, Hans‐Jürgen Maier, Nina Merkert   +8 more
wiley   +1 more source

Poly(iminoborane)s with Aromatic Side Groups: Insights into the Microstructure from Monodisperse Model Oligomers

ChemistryEurope
While certain inorganic main‐group polymers such as silicones (polysiloxanes) are ubiquitous in our everyday life, poly(iminoborane)s have been elusive for a long time.
Matthias Maier, Dr. Alexandra Friedrich, Johannes S. Schneider, Dr. Jan A. P. Sprenger, Jonas Klopf, Dr. Lars Fritze, Prof. Dr. Maik Finze, Prof. Dr. Holger Helten   +7 more
doaj   +1 more source

Gamma ray attenuation behaviors and mechanism of boron rich slag/ epoxy resin shielding composites

Nuclear Engineering and Technology, 2023
Excellent thermal neutron absorption performance of boron expands the potential use of boron rich slag to prepare epoxy resin matrix nuclear shielding composites. However, shielding attenuation behaviors and mechanism of the composites against gamma rays
Mengge Dong, Suying Zhou, He Yang, Xiangxin Xue   +3 more
doaj   +1 more source

Ab initio density functional investigation of B_24 cluster: Rings, Tubes, Planes, and Cages [PDF]

, 2003
We investigate the equilibrium geometries and the systematics of bonding in various isomers of a 24-atom boron cluster using Born-Oppenheimer molecular dynamics within the framework of density functional theory.
A. Katz, A.F. Hebard, B. Silvi, D. G. Kanhere, D. Levine, D. Levine, D. Vanderbilt, D.M. Ceperley, D.S. Shechtman, G.B. Bachelet, H.W. Kroto, I. Boustani, I. Boustani, I. Boustani, I. Boustani, Ihsan Boustani, Ihsan Boustani, Ihsan Boustani, J. Niu, J.P. Perdew, K. Holczer, L. Hanley, L. Kleinman, M.C. Payne, M.K. Sabra, S. Becker, S. Chacko, S.J. La Placa, Vijay Kumar, Wataru Hayami   +29 more
core   +2 more sources

Resistance Rapid Heating of Aluminum Coatings in an Extreme High Vacuum–Adequate Atmosphere for Hot Stamping

Advanced Engineering Materials, EarlyView.
The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht, Alexander Schnettger, Ulrich Holländer, Sven Hübner, Bernd‐Arno Behrens, Hans Jürgen Maier   +5 more
wiley   +1 more source

Screening of antimicrobial resistance and molecular detection of fluoroquinolone resistance mechanisms in chicken faeces-derived Escherichia coli

Veterinární Medicína, 2016
This study was aimed at investigating the resistance to antimicrobial agents and to assess the predominant molecular mechanisms of fluoroquinolone resistance in faecal E. coli strains isolated from chickens farmed in central Poland.
A. Lenart-Boron, K. Augustyniak, P. Boron   +2 more
doaj   +1 more source