Results 61 to 70 of about 1,829 (196)

Calculation of the centre of gravity of the cone utilizing the method of Archimedes [PDF]

, 2015
Archimedes calculated the centre of gravity of the cone but the proof of this theorem is not extant in his works. Knorr made a reconstruction of this proof utilizing geometrical arguments.
Magnaghi, CP, Assis, AKT
core   +1 more source

Occurrence of Flat‐Top Electron Velocity Distributions in Magnetotail Plasma Jets

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Non‐Maxwellian electron velocity distributions (eVDFs) are ubiquitous in collisionless plasmas. For example, various types of non‐Maxwellian eVDFs exist in magnetic reconnection jets in the Earth's magnetotail. At thermal energies, eVDF can be flat‐topped due to electron trapping associated with magnetic reconnection.
L. Richard, Yu. V. Khotyaintsev, C. Norgren   +2 more
wiley   +1 more source

Epistemic game for answer making in learning about hydrostatics

Physical Review Special Topics. Physics Education Research, 2013
Previous research into problem solving in physics resulted in researchers introducing six epistemic games to describe the organizational structures of locally coherent resources.
Ying Chen, Paul W. Irving, Eleanor C. Sayre   +2 more
doaj   +1 more source

Additive Manufacturing of Ni‐Based Thermoelectric Materials for Waste Heat Recovery

Advanced Materials Technologies, Volume 11, Issue 12, 18 June 2026.
Thermoelectric generators convert waste heat into electricity but are constrained by conventional fabrication. Here, laser powder bed fusion enables direct printing of customised n‐type Cu60Ni40 and p‐type Ni90Cr10 legs. The assembled module achieves 0.8% efficiency at ΔT = 419 K, demonstrating scalable additive manufacturing of eco‐friendly, design ...
Karolin Amstein, Aayush Dobhal, Heiko Reith, Ran He, Julia Kristin Hufenbach, Kornelius Nielsch, Pingjun Ying   +6 more
wiley   +1 more source

Unveiling a Bulk WTaV Multicomponent Alloy With Superior Thermal Properties and Manufacturability

Advanced Science, Volume 13, Issue 33, 15 June 2026.
ABSTRACT Many tungsten (W)‐based medium and high entropy alloys (HEA) demonstrate superior microstructural stability and enhanced mechanical properties as compared to pure W, effectively rendering them as viable candidate materials for extreme environments such as nuclear fusion, aerospace applications, and so on.
Ishtiaque K. Robin, Skye N. Supakul, Shalini Tripathi, Eda Aydogan, Matthew T. Vigil, Caleb Hatler, Bochuan Sun, Akshay Korpe, Enrique Martinez, Saryu J. Fensin, Dan J. Thoma, Osman El‐Atwani   +11 more
wiley   +1 more source

Wireless Sensor Node for Surface Seawater Density Measurements

Sensors, 2012
An electronic meter to measure surface seawater density is presented. It is based on the measurement of the difference in displacements of a surface level probe and a weighted float, which according to Archimedes’ law depends on the density of the water.
Roberto Saletti, Roberto Roncella, Federico Baronti, Gabriele Fantechi   +3 more
doaj   +1 more source

Effects of Fe2O3 substitution for K2O on the physical properties of 88P2O5–xFe2O3–2CoO–(10 − x)K2O glasses

Boletín de la Sociedad Española de Cerámica y Vidrio, 2021
88P2O5–xFe2O3–2CoO–(10 − x)K2O glasses from x = 0.0 to x = 0.5 were prepared at 850 °C using melt quenching technique.These glass systems were characterized by using X-ray diffraction, differential scanning calorimetry (DSC), magnetic measurements, Raman
Noureddine Bjaoui, Nasr Sdiri, Manuel Almaida Valente, Karima Horchani-Naifer, Mokhtar Férid   +4 more
doaj   +1 more source

Particle‐Size‐Dependent Lithium‐Ion Transport in PEO/LLZO Composite Electrolytes

Small Structures, Volume 7, Issue 6, June 2026.
A continuum modeling framework quantifies the critical polymer/ceramic interfacial resistance required for ceramic fillers to reduce polarization in PEO/LLZO composite electrolytes. The model shows that this threshold scales linearly with LLZO particle size, while remaining largely insensitive to ceramic loading.
Jeong Seop Yoon, Meghan Burns, Luca Guido Weckelmann, Michael Counihan, Pallab Barai, Chih‐Long Tsai, Rüdiger‐A. Eichel, Sanja Tepavcevic, Venkat Srinivasan   +8 more
wiley   +1 more source

Optimal power flow using archimedes optimizer algorithm

, 2022
This article proposes a new metaheuristic algorithm called Archimedes optimization algorithm (AOA) for solving optimization problems of optimal power flow (OPF) utilizing the renewable energy sources (RES) for minimizing different single-objective and ...
Ahmed. M. A. Soliman, Elsayed, Salah K., Mohammed Hamouda Ali, Salah K. Elsayed, Ali, Mohammed Hamouda, Ahmed Mohammed Attiya Soliman, Soliman, Ahmed. M. A.   +6 more
core   +1 more source

Process–Structure–Property Relationship of Laser Additive Manufactured Thermoelectric Silver Selenide

International Journal of Applied Ceramic Technology, Volume 23, Issue 3, June 2026.
This research establishes process–structure–property connections for n‐type silver selenide fabricated via laser powder bed fusion. By correlating laser processing parameters with melt pool and microstructural features, the study demonstrates the feasibility of additively manufacturing dense thermoelectric structures.
Cagri Oztan, Mario Calderón‐Cueva, Monica Romero, Vijayabarathi Ponnambalam, Eric Fodran, Eric Barnes, Saniya LeBlanc   +6 more
wiley   +1 more source