Results 71 to 80 of about 233,126 (310)

Combining Metal Additive Manufacturing and Casting Technology: High Performance Cooling Channels for Electric Powertrain Components

Advanced Engineering Materials, EarlyView.
When realized as inserts in high‐pressure die casting, aluminum cooling channels for electric powertrain components and similar applications typically require a stabilizing filler to survive the process. The present study investigates relinquishing this filler using additively manufactured inserts promising performance improvements.
Dirk Lehmhus, Gefei Li, Martin Czekalla, Leonardo Fernandes Gomes, Christoph Pille, Hermann Pleteit, Adrian Struss, Keno Toussaint, Andre Irretier, Münip Dalgic   +9 more
wiley   +1 more source

Sol–Gel Synthesis of Ca2.5Ag0.3Sm0.2Co4O9 Semiconducting Materials for Thermoelectric Applications in Aerospace Systems

Advanced Engineering Materials, EarlyView.
Ca2.5Ag0.3Sm0.2Co4O9 semiconductor materials are synthesized and produced in this study using the sol–gel and cold pressing techniques for thermoelectric generator applications. As template samples are added, the Seebeck coefficient and power factor values rise, peaking at 800 °C for Ca2.5Ag0.3Sm0.2Co4O9 at 274.47 μV K−1 and 0.58 mW mK−2, respectively.
Enes Kilinc, Fatih Uysal, Mucahit Abdullah Sari, Huseyin Kurt, Erdal Celik   +4 more
wiley   +1 more source

Teoria quântica da gravitação: cordas e teoria M

Revista Brasileira de Ensino de Física
Discutimos aqui a junção da relatividade geral e da mecânica quântica como necessidade tanto teórica quanto experimental da Física, e suas conseqüências na compreensão do Universo, de seu início e sua evolução.
Elcio Abdalla
doaj   +1 more source

General relativistic theory of gravity and electricity

Revista de Investigación de Física, 2022
As gravitation and electromagnetism are closely analogous long-range interactions, and the current formulation of gravitation is given in terms of geometry, we expect the latter also to appear throug the geometry.
Mississippi Valenzuela
doaj  

On gravitational flow in the relativistic theory of gravitation [PDF]

Doklady Physics, 2006
6 ...
Semen S. Gershtein, Mirian Alekseevich Mestvirishvili, Anatoly Alekseevich Logunov   +2 more
openaire   +3 more sources

Editorial note to "Large number coincidences and the anthropic principle in cosmology"

, 2011
This is an editorial note to accompany reprinting as a Golden Oldie in the Journal of General Relativity and Gravitation of the famous paper by Brandon Carter on the anthropic principle in cosmology \cite{Car74}. This paper was presented at IAU Symposium
Ellis, George F. R.
core   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source

General Relativity and Cosmology: Unsolved Questions and Future Directions

Universe, 2016
For the last 100 years, General Relativity (GR) has taken over the gravitational theory mantle held by Newtonian Gravity for the previous 200 years. This article reviews the status of GR in terms of its self-consistency, completeness, and the evidence ...
Ivan Debono, George F. Smoot
doaj   +1 more source

Mie's Theories of Matter and Gravitation [PDF]

, 2007
Unifying physics by describing a variety of interactions – or even all interactions – within a common framework has long been an alluring goal for physicists. One of the most ambitious attempts at unification was made in the 1910s by Gustav Mie.
Smeenk, Chris
core  

5D gravity and the discrepant G measurements

, 2003
It is shown that 5D Kaluza-Klein theory stabilized by an external bulk scalar field may solve the discrepant laboratory G measurements. This is achieved by an effective coupling between gravitation and the geomagnetic field.
A Cornaz, A Lichnerowicz, B Hubler, CH Bagley, ER Cohen, F Nolting, GG Luther, GI Moore, GJ Tuck, GT Gillies, J, J Dousse, J Luo, J Luo, J Ponce, J Schurr, J-P Mbelek, J-P Mbelek, JH Gundlach, JK Hoskins, JP Schwarz, K Kuroda, K Kuroda, LD Landau, M Oldham, M. U. Sagitov, MG Lloyd, MP Fitzgerald, MP Fitzgerald, MS Saulnier, OV Karagioz, PJ Mohr, PR Heyl, PS Wesson, RD Rose, SD Stacey, SJ Richman, T. J. Quinn, U Kleinevoss, X Yang, YT Chen   +40 more
core   +1 more source