Results 81 to 90 of about 6,002,244 (336)

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Trace element composition of troilite, iron and iron-nickel metall from meteorite Chelyabinsk

Литосфера, 2015
We studied the contents of trace elements in troilite, iron and in iron-nickel metal from meteorite Chelyabinsk by means of LA-ICP-MS. The features of the distribution of siderophile and chalcophile elements in sulfide and metallic phase in gray and ...
S. Yu. Stepanov, S. V. Berzin
doaj   +2 more sources

Beyond the Toolpath: Site-Specific Melt Pool Size Control Enables Printing of Extra-Toolpath Geometry in Laser Wire-Based Directed Energy Deposition

Applied Sciences, 2019
A variety of techniques have been utilized in metal additive manufacturing (AM) for melt pool size management, including modeling and feed-forward approaches. In a few cases, closed-loop control has been demonstrated.
Brian T. Gibson, Bradley S. Richardson, Tayler W. Sundermann, Lonnie J. Love   +3 more
doaj   +1 more source

Scaling analysis of electron transport through metal-semiconducting carbon nanotube interfaces: Evolution from the molecular limit to the bulk limit

, 2004
We present a scaling analysis of electronic and transport properties of metal-semiconducting carbon nanotube interfaces as a function of the nanotube length within the coherent transport regime, which takes fully into account atomic-scale electronic ...
C.W. J. Beenakker, D.A. Papaconstantopoulos, D.K. Ferry, E.H. Nicollian, E.H. Rhoderick, H. Haug, H.K. Henisch, J. Friedel, J. Tersoff, J.D. Jackson, L.D. Landau, M. Büttiker, M. Büttiker, M. Lundstrom, M. Magoga, M.A. Reed, Mark A. Ratner, Ph. Avouris, R. Landauer, R. Saito, R.H. Dennard, R.M. Dreizler, S. Datta, S. Datta, S.M. Sze, S.M. Sze, V. Heine, W. Hänsch, W. Mönch, W. Shockley, W. Shockley, W. van Roosbroeck, Y. Imry, Y. Xue, Y. Xue, Yongqiang Xue   +35 more
core   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Ювелирное искусство Екатеринбурга конца XX – начала XXI века

Искусство Евразии, 2019
В статье кратко рассмотрены три основных этапа развития ювелирного искусства Екатеринбурга конца XX начала XXI века. Приведены общие временные истилистические особенности каждого периода.
Глазырин, Кирилл Николаевич
doaj   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

Stone and Metal: Experimental reproduction of a stone monument of the Metal Age, Located between Liguria and Tuscany (Italy)

EXARC Journal, 2019
The Italian region of Lunigiana, is located between Liguria and Tuscany, and is rich in stone statues which were worked from the third millennium B.C. until the beginning of the historical period, around the 6th century B.C. (Anati, 1981). Eighty statues
Edoardo Ratti
doaj  

Avaliação da distribuição de cobre associado a compostos de diferentes massas moleculares na polpa de açaí Evaluation of the distribution of copper associated to compounds of different molecular weights in the acai pulp

Acta Amazonica, 2012
Neste estudo, cromatografia de exclusão por tamanho (SEC) com detecção por UV e detecção off-line por espectrometria de absorção atômica em forno de grafite (GF AAS) foi usada para investigar a associação de cobre a espécies de alta massa molecular (HMW)
Samantha Leite da Trindade, Patrícia de Oliveira Nunes, Kelly das Graças Fernandes   +2 more
doaj   +1 more source

Metal phthalocyanine polymers [PDF]

, 1984
Metal 4, 4', 4", 4"'=tetracarboxylic phthalocyanines (MPTC) are prepared by reaction of trimellitic anhydride, a salt or hydroxide of the desired metal (or the metal in powdered form), urea and a catalyst. A purer form of MPTC is prepared than heretofore.
Achar, B. N., Fohlen, G. M., Parker, J. A.   +2 more
core   +2 more sources