Results 91 to 100 of about 8,132 (220)

Investigation on the fatigue strength of threaded titanium bolts Untersuchung der Ermüdungsfestigkeit von Titangewindebolzen

Materialwissenschaft und Werkstofftechnik, EarlyView.
New test setup for the fatigue testing of threads and the thermochemical etching of titanium alloys. Extending the service life of mechanical components is a key strategy for enhancing sustainability. This study investigates the fatigue strength of M12 threads manufactured from the titanium aluminium 6 vanadium 4 alloy.
P. du Maire, J. Hoffmeister, E. Schuch, M. Johlitz, A. Öchsner   +4 more
wiley   +1 more source

Assessment of Oxidative Stress, Vitellogenin, and Human Health Risks Derived From Nile Tilapia Exposed to Metals and Metalloids in Southeastern Brazil

Environmental Toxicology, EarlyView.
ABSTRACT Urban coastal lagoons are highly vulnerable ecosystems increasingly affected by metal contamination, as well as multiple anthropogenic stressors. This study evaluated ecotoxicological and human health risks associated with chronic metal exposure in Nile tilapia (Oreochromis niloticus) from an anthropogenically impacted lagoon in southeastern ...
Julia Araújo Alves, Priscila M. O. Muniz Cunha, Shênia Patrícia Corrêa Novo, Lorena Oliveira Souza Soares, Tatiana Dillenburg Saint‐Pierre, Fábio Veríssimo Correia, André Luís de Sá Salomão, Rachel Ann Hauser‐Davis, Enrico Mendes Saggioro   +8 more
wiley   +1 more source

Hybrid metamaterials for electrically triggered multifunctional control

Nature Communications, 2016
Despite their exotic properties active metamaterials, where active materials are introduced to advance tunability, switchability and nonlinearity, are seldom reported. Here, Liu et al.
Liu Liu, Lei Kang, Theresa S. Mayer, Douglas H. Werner   +3 more
doaj   +1 more source

Nonthermal plasma approaches for combating implant‐associated infections: A compendious review

VIEW, EarlyView.
Implant‐associated infections pose serious clinical challenges. Non‐thermal plasma (NTP) modifications overcome this bottleneck in distinct ways relative to traditional sterilization methods. Gas‐phase plasmas generate highly energetic species, UV radiation and reactive oxygen/nitrogen species (RONS), which alter the implant surface properties.
A. M. Trimukhe, Satish Rojekar, Amol Gholap, K. Navaneetha Pandiyaraj, Mukesh Patekar, Claudia Riccardi, R. R. Deshmukh, Tomáš Kovářík, Kalim Deshmukh   +8 more
wiley   +1 more source

Programmable coupled oscillators for synchronized locomotion

Nature Communications, 2019
Designing alternative paradigms for bio-inspired analog computing that harnesses collective dynamics remains a challenge. Here, the authors exploit the synchronization dynamics of coupled vanadium dioxide-based insulator-to-metal phase-transition nano ...
Sourav Dutta, Abhinav Parihar, Abhishek Khanna, Jorge Gomez, Wriddhi Chakraborty, Matthew Jerry, Benjamin Grisafe, Arijit Raychowdhury, Suman Datta   +8 more
doaj   +1 more source

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

Boreas, EarlyView.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo, Priyadarsi D. Roy, Benjamin Gwinneth, Irma G. Vargas‐Martinez, Alejandro A. Aragon‐Moreno, Roger Medina‐Gonzales   +5 more
wiley   +1 more source

Role of adjunctive methacryloyloxydecyl dihydrogen phosphate primers on dentin bond strength of universal adhesives under saliva and artificial aging

European Journal of Oral Sciences, EarlyView.
Abstract This study evaluated whether adjunctive 10‐methacryloyloxydecyl dihydrogen phosphate (MDP) primers enhance the microtensile bond strength (µTBS) of two universal adhesives (UAs) to dentin under artificial aging and repeated salivary contamination applied at each bonding step.
Marjorie Zanini, Amélie Mainjot, Stéphane Le Goff, Jean‐François Nguyen   +3 more
wiley   +1 more source

A CMOS-compatible oscillation-based VO2 Ising machine solver

Nature Communications
Phase-encoded oscillating neural networks offer compelling advantages over metal-oxide-semiconductor-based technology for tackling complex optimization problems, with promising potential for ultralow power consumption and exceptionally rapid ...
Olivier Maher, Manuel Jiménez, Corentin Delacour, Nele Harnack, Juan Núñez, María J. Avedillo, Bernabé Linares-Barranco, Aida Todri-Sanial, Giacomo Indiveri, Siegfried Karg   +9 more
doaj   +1 more source

The effects of anodization and instrumentation on titanium abutment surface characteristics and biofilm formation

Journal of Prosthodontics, EarlyView.
Abstract Purpose To assess the impact of anodization and instrumentation on titanium abutment surface characteristics (surface roughness and wettability) and biofilm formation (viability and mass). Materials and Methods Titanium discs were obtained from pre‐milled abutment blanks made of titanium‐6aluminum‐7niobium alloy.
Weiqing Liu, Richard L. Gregory, Chao‐Chieh Yang, Yusuke Hamada, Wei‐Shao Lin   +4 more
wiley   +1 more source

The origin of the vanadium dioxide transition entropy

, 2018
The reversible metal-insulator transition in VO$_2$ at $T_\text{C} \approx 340$ K has been closely scrutinized yet its thermodynamic origin remains ambiguous. We discuss the origin of the transition entropy by calculating the electron and phonon contributions at $T_\text{C}$ using density functional theory.
Mellan, Thomas Ambrose, Wang, Hao, Schwingenschlögl, Udo, Grau-Crespo, Ricardo   +3 more
openaire   +2 more sources