Results 71 to 80 of about 2,554,272 (326)

On the Thermal Time Constant of Resistance Spot Welding

Journal of the Japan Welding Society, 1957
Under the same assumptions as Report I (Japanese W. J. 26 No. 9 p.558 1957), temperature variation along the plate thickness during the heating time are shown as equ. (20), (21), and we see that higher harmonics of Fourier series can be neglected compared to the fundamental. So the heat time constant can be expressed as equ.
K. Ando, T. Nakamura
openaire   +2 more sources

Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation

Advanced Engineering Materials, EarlyView.
This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley   +1 more source

Determination of the Cardinal Temperatures and Studying the Effect of Temperature on the Efficiency of Priming on Onion Seed (Allium Cepa cv, Zargan) [PDF]

علوم و فناوری بذر ایران, 2019
In order to study the effect of priming on onion seed germination of Zangan Cultivar in different temperature conditions, this study was carried out with 6 levels of temperature of 5 to 30 ° C and three seed pretreatment, include control, hydro-priming ...
M.A. Askari Sarcheshmeh, Z. Moradi Shakoorian, M. Delshad, R. Tavakkol Afshari   +3 more
doaj   +1 more source

Holographic (De)confinement Transitions in Cosmological Backgrounds

, 2011
For type IIB supergravity with a running axio-dilaton, we construct bulk solutions which admit a cosmological background metric of Friedmann-Robertson-Walker type.
C. Fefferman, E. Witten, E. Witten, Johanna Erdmenger, Kazuo Ghoroku, M. Bianchi, N. D. Birrell, René Meyer   +7 more
core   +1 more source

An Inkjet‐Printed Platinum‐Based Temperature Sensing Element on Polyimide Substrates

Advanced Engineering Materials, EarlyView.
An inkjet‐printed, meander‐structured, nanoparticle platinum‐based resistive temperature sensors on polyimide substrates are demonstrated as proof‐of‐concept. Optimized sintering at 250°C enables stable conductive structures. The Pt100‐ and Pt1000‐type sensors exhibit linear resistance–temperature characteristics with stable TCR in the 20°C–80°C range,
Shawon Alam, Thomas Kister, Alexander Scholz, Sophie Sauva, Makara Lay, Tobias Kraus, Jasmin Aghassi‐Hagmann   +6 more
wiley   +1 more source

Similarity Criterion Based on the Analytical Solution of Heat Conduction Equation in Frozen Soil [PDF]

长江科学院院报
[Objective] The evolution pattern of temperature field in frozen walls serves as a key factor in optimizing design schemes during artificial ground freezing.
BO Yin, WANG Cong, FENG Yan-fang, ZHANG Bin, ZHANG Ying, GUO Xiao-gang, YAO Jin-song, WEI Lai, CHEN Rong, XU Chen
doaj   +1 more source

General relativistic statistical mechanics

, 2012
Understanding thermodynamics and statistical mechanics in the full general relativistic context is an open problem. I give tentative definitions of equilibrium state, mean values, mean geometry, entropy and temperature, which reduce to the conventional ...
Rovelli, Carlo
core   +3 more sources

Effects of Carbon Nanoparticles on Triboelectro‐Induced Surface Defects

Advanced Engineering Materials, EarlyView.
Carbon nanoparticles added to grease modify the electrocontact behavior. The synergy of particle concentration and electric current dominates the surface damage of metals in contact. Electrical surface damage caused by current leakage is a critical challenge in high‐performance applications such as electric vehicle (EV) drivetrains and wind turbine ...
Mohsen Tajedini, Lu Fang, Jacob Bons, Mohammad Humaun Kabir, Evan Johnson, Joe Kosmoski, Hong Liang   +6 more
wiley   +1 more source

Thermal Analysis of a Fast Charging Technique for a High Power Lithium-Ion Cell

Batteries, 2016
The cell case temperature versus time profiles of a multistage fast charging technique (4C-1C-constant voltage (CV))/fast discharge (4C) in a 2.3 Ah cylindrical lithium-ion cell are analyzed using a thermal model.
Victor Manuel García Fernández, Cecilio Blanco Viejo, David Anseán González, Manuela González Vega, Yoana Fernández Pulido, Juan Carlos Alvarez Antón   +5 more
doaj   +1 more source

Solving the Gap Equation of the NJL Model through Iteration: Unexpected Chaos

, 2019
We explore the behavior of the iterative procedure to obtain the solution to the gap equation of the Nambu-Jona-Lasinio (NLJ) model for arbitrarily large values of the coupling constant and in the presence of a magnetic field and a thermal bath.
Martínez, Angelo, Raya, Alfredo
core   +1 more source