Results 61 to 70 of about 1,586,589 (233)

Spin - or, actually: Spin and Quantum Statistics

, 2008
The history of the discovery of electron spin and the Pauli principle and the mathematics of spin and quantum statistics are reviewed. Pauli's theory of the spinning electron and some of its many applications in mathematics and physics are considered in ...
A. Connes, A. Pais, C. Fefferman, C. Fefferman, C. Fefferman, D. Buchholz, E. Schrödinger, E.C. Stoner, E.H. Lieb, E.H. Lieb, F. Wilczeck, G. Lüdrs, G. Velo, G.A. Goldin, H. Araki, H. Kragh, H. Spohn, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fuchs, J. Fuchs, J.D. Jackson, J.J. Bisognano, K. Fredenhagen, K. Osterwalder, L. B. J. Fröhlich, L. Bugliaro Goggia, L. Bugliaro Goggia, L. Bugliaro Goggia, M. Born, M. Born, M. Fierz, M. Griesemer, M. Leinaas, M. Loss, P.A.M. Dirac, P.A.M. Dirac, R. Howe, R. Jackiw, R. Jost, R. Jost, R. Kubo, R.F. Streater, R.F. Streater, S. Deser, S. Doplicher, S. Doplicher, S. Ferrara, S. Weinberg, S. Weinberg, V. Bach, V. Bach, V. Bach, W. Heisenberg, W. Hunziker, W. Pauli, W. Pauli, W. Pauli, W. Pauli   +67 more
core   +3 more sources

Shape Memory Polymer‐Based Hook‐and‐Loop Fastener for Robust Bonding and on‐Demand Easy Separation

Advanced Engineering Materials, EarlyView.
A 3D shape memory polymer‐based hook‐and‐loop fastener, fabricated using projection microstereolithography and molding, offers tunable bonding strength through temperature control. When heated from 25 to 70 °C, the fastener softens and deforms easily, reducing bonding strength by 20‐fold for on‐demand easy separation.
Chen Yang, Yueping Wang, Hyunggyu Kim, Paul Wang, Daehoon Han, Howon Lee   +5 more
wiley   +1 more source

A Simulative Approach for the Prediction of Mesoscale Residual Stress Fields in Solution‐Strengthened Ferritic Ductile Iron

Advanced Engineering Materials, EarlyView.
This study presents a 3D representative volume element‐based simulation approach to predict mesoscopic residual stress and strain fields in silicon solid solution‐strengthened ductile cast iron. By modeling phase transformation kinetics with an enhanced Johnson–Mehl–Avrami–Kolmogorov model, the effects of varying cooling rates on residual stresses are ...
Lutz Horbach, Oliver Schenk, Valérian Iss, Ali Rajaei, Jiali Zhang, Felix Weber, Christoph Broeckmann   +6 more
wiley   +1 more source

Evaluating Dielectric Properties for Semicrystalline Thermoplastics to Analyze the Thermal and Rheological Properties in Laser‐Based Powder Bed Fusion of Plastics

Advanced Engineering Materials, EarlyView.
This study aims to establish a link between the dielectric properties of polyamide 12 (PA12) and its thermal and rheological properties using dielectric analysis (DEA). A standardized methodology is introduced to determine melting and crystallization temperatures.
Benedikt Burchard, Joseph Hofmann, Katrin Wudy   +2 more
wiley   +1 more source

Estimating the BenefiÂ…t of High School for College-Bound Students [PDF]

Studies based on instrumental variable techniques suggest that the value of a high school education is large for potential dropouts, yet we know much less about the size of the benefiÂ…t for students who will go on to post-secondary education.
Morin, Louis-Philippe
core  

Toughness of Confined Auxetic Foams

Advanced Engineering Materials, EarlyView.
Auxetic (negative Poisson's ratio) materials offer benefits such as impact mitigation, thermal insulation, vibration damping, and reduced shear strain, although their fracture mechanics are largely unexplored. This study investigates damage initiation and propagation in confined re‐entrant auxetic foams from polyurethane via experimental ...
Adrianos E. F. Athanasiadis, Oliver Duncan, Michal K. Budzik, Marcelo A. Dias   +3 more
wiley   +1 more source

A Simulative Evaluation of Triply Periodic Minimal Surface Structures in the Context of Elastocaloric Applications

Advanced Engineering Materials, EarlyView.
A simulative evaluation of triply periodic minimal surface (TPMS) structures for an elastocaloric application under compressive load is performed. For the evaluation of the structure's performance, surface/volume ratio, generated heat and invested mechanical work are taken into account and are compared to a tube as a reference specimen.
Michael Fries, Paul Motzki, Dirk Bähre, Anne Jung   +3 more
wiley   +1 more source

THE VALUE OF MATHEMATICS AS A SECONDARY SCHOOL SUBJECT*

School Science and Mathematics, 1916
n ...
openaire   +3 more sources

Comparative Study of Experimental Methods for Measuring Thermal Properties of 100Cr6 Steel Powders

Advanced Engineering Materials, EarlyView.
This study investigates the thermal properties of 100Cr6 steel in both bulk and powder forms. Measuring the very low thermal conductivity typically exhibited by powders poses significant challenges. To address this, two novel measurement techniques—temperature gradient and finite laser pulse response—are introduced and evaluated by comparison with the ...
Junsheng Zhuo, Hagen P. Kohl, Dongmei Liu, Lisa Matthäus, Arne Bochmann, Aaron Berger, Sebastian Weber, Stefan Nolte, Stephanie Lippmann   +8 more
wiley   +1 more source

Facile Synthesis of CuxS Electrocatalysts for CO2 Conversion into Formate and Study of Relations Between Cu and S with the Selectivity

Advanced Functional Materials, EarlyView.
Copper sulfide based electrocatalysts for CO2 conversion are selective for production of formate as major product. Transformations under electrochemical conditions result in significant sulfur loss, and this study examines the nature of how persistent, residual sulfur (observed as surface SO42– species and S dissolved in the electrolyte) can sustain ...
Sasho Stojkovikj, Gumaa A. El‐Nagar, Siddharth Gupta, Metodija Najdoski, Violeta Koleva, Theocharis Tzanoudakis, Frederik Firschke, Peter Bogdanoff, Matthew T. Mayer   +8 more
wiley   +1 more source