Results 141 to 150 of about 2,073,905 (310)

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

Computational/experimental analysis of three low sonic boom configurations with design modifications [PDF]

, 1992
The Euler code, designated AIRPLANE, which uses an unstructured tetrahedral mesh was used to compute near-field sonic boom pressure signatures on three modern low sonic boom configurations: the Mach 2, Mach 3, and Haglund models. The TEAM code which uses
Cliff, Susan E.
core   +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

Relationships between morphological factors and heat extraction from the upper arm using liquid cooling garment

Fashion and Textiles
Astronauts wear liquid perfused garments inside their outer spacesuits for regulating body temperature. The present study explored relationships between local heat production from the upper arm and body morphology while wearing liquid perfused sleeve ...
Maria Stenkina, Ga-Young Lim, Yujean Ghim, Hyun-Soo Kim, Joo-Young Lee   +4 more
doaj   +1 more source

New Zealand Guidelines for cyanobacteria in recreational fresh waters: Interim Guidelines [PDF]

, 2009
This document is divided into four main sections, plus 14 appendices. Section 1. Introduction provides an overview of the purpose and status of the document as well as advice on who should use it. Section 2.
Hamilton, David P., Paul, Wendy J., Safi, Karl A., Williamson, Wendy M., Wood, Susanna A.   +4 more
core   +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

Experience with Berlin heart support in children with a focus on device removalCentral MessagePerspective

JTCVS Open
Objective: The Berlin Heart EXCOR is the only durable ventricular assist device available for infants and small children. A subset of patients supported by the Berlin Heart EXCOR device experience cardiac recovery.
Valerii Iaprintsev, MD, Igor E. Konstantinov, MD, PhD, FRACS, Edward Buratto, MD, PhD, FRACS, Tyson A. Fricke, MBBS, PhD, FRACS, Lucas Eastaugh, MBBS, FRACP, Christian P. Brizard, MD, MS, Stephanie Perrier, MD, Jacob Mathew, MBBS, FRACP   +7 more
doaj   +1 more source

Unlocking the Power of Quercetin‐Encapsulated Mesoporous Bioactive Glass Nanoparticles: A Multifunctional Approach to Bone Regeneration

Advanced Engineering Materials, EarlyView.
Mesoporous bioactive glass nanoparticles (MBGNs) are investigated for bone regeneration given their remarkable structural and functional properties. MBGNs are functionalized with Mn and Cu and incorporated with quercetin, a natural flavonoid exhibiting antioxidant, anti‐inflammatory, and antimicrobial properties.
Giovanni Lo Bello, Qaisar Nawaz, Pier Francesco Ferrari, Laura Pastorino, Roberto Raiteri, Aldo R. Boccaccini   +5 more
wiley   +1 more source

Reference Values for Indexed Echocardiographic Chamber Sizes in Older Adults: The Multi‐Ethnic Study of Atherosclerosis

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Background Normalization of echocardiographic chamber measurements for body surface area may result in misclassification of individuals with obesity or sarcopenia. Normalization for alternative measures of body size may be preferable, but there remains a
Jordan B. Strom, Monica Mukherjee, Lauren Beussink‐Nelson, Julius M. Gardin, Benjamin H. Freed, Sanjiv J. Shah, Jonathan Afilalo   +6 more
doaj   +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