Results 81 to 90 of about 282,457 (318)

Geometric Optimization and Mechanical Performance Enhancement of Auxetic Structures for High‐Impact Applications Through Fused Deposition Modeling

Advanced Engineering Materials, EarlyView.
This study explores the mechanical performance of three auxetic structures, identifying a re‐entrant‐star hybrid as the most effective for impact absorption. Finite element simulations and experiments demonstrate significant gains in energy absorption and flexural strength after geometric optimization. This study investigates the mechanical performance
Malik Hassan, Manjusri Misra, Alexander Bardelcik, Stefano Gregori, Amar K. Mohanty   +4 more
wiley   +1 more source

Dynamic Precipitation during High‐Pressure Torsion of a Magnesium–Manganese Alloy

Advanced Engineering Materials, EarlyView.
An ultrafine‐grained alloy is produced by high‐pressure torsion of solutionized Mg–1.35 wt% Mn. Precipitation of nanometer‐scale Mn particles during deformation provides pinning sites. This prevents the formation of a bimodal grain structure and results in a finer grain size than for pure Mg.
Julian M. Rosalie, Anton Hohenwarter
wiley   +1 more source

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

Advanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti, Marta Miola, Liliana Liverani, Paolo Sartori, Enrica Verné, Aldo R. Boccaccini   +5 more
wiley   +1 more source

Flux penetration and expulsion in thin superconducting disks

, 1999
Using an expansion of the order parameter over the eigenfunctions of the linearized first Ginzburg-Landau (GL) equation, we obtain numerically the saddle points of the free energy separating the stable states with different number of vortices.
A. I. Buzdin, A. L. Fetter, A. V. Kuznetsov, B. V. Petukhov, B. V. Petukhov, C. Bolech, C. J. Cerjan, C. P. Bean, E. Zeldov, F. M. Peeters, H. Frahm, I. Aranson, J. J. Palacios, J. J. Palacios, J. S. Langer, M. V. Indenbom, P. G. de Gennes, R. L. Hilderbrandt, Th. Schuster, V. A. Schweigert, V. A. Schweigert, V. A. Schweigert, V. G. Kogan, V. P. Galaiko, V. P. Galaiko, V. V. Moshchalkov, X. Zhang   +26 more
core   +1 more source

Micropleated Nanofibrous Filters for High‐Efficiency Submicron Aerosol Filtration: A Comparative Study with Chemical, Biological, Radiological, and Nuclear Gas Mask Filters

Advanced Engineering Materials, EarlyView.
This study presents micropleated filters manufactured by needleless electrospinning. Nanofibers are deposited onto uniaxially pre‐stretched substrates that contract upon release, forming densely packed micropleats. This architecture increases effective surface area without enlarging the filter size, achieving quality factors comparable to those of ...
Aleksandr Fadeev, Kevin Crown, Sean Kinahan, Gabriel Lucero, Hayden Stromsodt, Svetlana Romanova, Yury Salkovskiy   +6 more
wiley   +1 more source

In the shadow of dissidence: exploring the experiences of descendants of Czechoslovakian dissidents

Frontiers in Psychology
IntroductionThe Communist Party’s reign in Czechoslovakia (1948–1989) saw the persecution of thousands of individuals. The State Security campaign “Asanace” (meaning “sanitation”) was conducted to expel critics of the regime from the country using ...
Nikola Doubková, Radek Heissler, Edel Sanders, Marek Preiss, Marek Preiss   +4 more
doaj   +1 more source

A comprehensive set of simulations studying the influence of gas expulsion on star cluster evolution

, 2007
We have carried out a large set of N-body simulations studying the effect of residual-gas expulsion on the survival rate and final properties of star clusters.
Aarseth, Aarseth, Adams, Bastian, Binney, Boily, Boily, Churchwell, Clark, Fellhauer, Geyer, Goodwin, Goodwin, H. Baumgardt, Heggie, Hills, Hut, Kroupa, Kroupa, Kroupa, Kroupa, Kroupa, Lada, Lada, Lada, Makino, P. Kroupa, Palla, Tutukov, Weidner, Whitmore   +30 more
core   +1 more source

Hydrocarbon generation and expulsion quantification and contribution of multiple source rocks to hydrocarbon accumulation in Yanchang Formation, Ordos Basin, China

, 2021
Jingwei Cui, Zhongyi Zhang, Jianliang Liu, Guanglin Liu, Xiu Huang, Yalin Qi, Zhiguo Mao, Yang Li   +7 more
openalex   +1 more source

Development and Preliminary In Vivo Study of 3D‐Printed Bioactive Glass Scaffolds with Trabecular Architecture

Advanced Engineering Materials, EarlyView.
This study reports the fabrication of trabecular bioactive glass scaffolds (composition “1d”: 46.1SiO2‐28.7CaO‐8.8MgO‐6.2P2O5‐5.7CaF2‐4.5Na2O wt%) through vat photopolymerization and the relevant results from mechanical testing and in vivo implantation procedures in rabbit femora, showing great promise for bone tissue engineering applications.
Dilshat Tulyaganov, Roberta Gabrieli, Avzal Akbarov, Nigora Nigmatova, Bekhzod Khabilov, Alessandro Schiavi, Martin Schwentenwein, Enrica Verné, Francesco Baino   +8 more
wiley   +1 more source

Influence over school discipline policy: Variation across levels of governance, school contexts, and time

Education Policy Analysis Archives, 2017
Little research explores the relative influence of various stakeholders on school discipline policy. Using data from the SASS and ordered logistic regression, this study explores such influence while assessing variation across schools types and changes ...
F. Chris Curran
doaj   +1 more source