Results 71 to 80 of about 244,669 (294)

Quasinormal modes in Schwarschild black holes due to arbitrary spin fields [PDF]

, 2005
The Newman-Penrose formalism is used to deal with the massless scalar, neutrino, electromagnetic, gravitino and gravitational quasinormal modes (QNMs) in Schwarzschild black holes in a united form.
Shen, You-Gen, Shu, Fu-Wen
core   +1 more source

Synthesis of a Novel Thermoresponsive S53P4 Bioactive Glass Extract–Poloxamer 407 Injectable Hydrogels: Assessment of Biocompatibility and Antimicrobial Properties

Advanced Engineering Materials, EarlyView.
This study investigates innovative thermoreversible hydrogels derived from S53P4 bioactive glass extracts to aid in the healing of infected diabetic foot wounds. These injectable gels, which gel at body temperature, release beneficial ions and remain stable over time.
Marian G. Vargas Guerrero, Adrian Stiller, Alex Nygård, Matej Krivulka, Lars Galema, Erwin Peters, Jimmy Lucchesi, Peter Uppstu, Leena Hupa, Jacobus J. C. Arts   +9 more
wiley   +1 more source

LOAD TESTING OF THE DRIVUŠA BRIDGE

e-Zbornik. Elektronički Zbornik Radova Građevinskog Fakulteta
This paper details the static and dynamic proof load testing of the Drivuša bridge near Zenica on Corridor Vc. It includes a description of the bridge structure and the testing methodology. The measurement process and the equipment utilized are presented.
Marino Jurišić, Mladen Kustura, Goran Šunjić   +2 more
doaj   +1 more source

Improving the frequency precision of oscillators by synchronization [PDF]

Physical Review E, 2012
Improving the frequency precision by synchronizing a lattice of oscillators is studied in the phase reduction limit. For the most commonly studied case of purely dissipative phase coupling (the Kuramoto model) I confirm that the frequency precision of N oscillators perturbed by independent noise sources is improved by a factor N as expected from simple
openaire   +4 more sources

Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition

Advanced Engineering Materials, EarlyView.
A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley   +1 more source

Natural Oscillations of Plate-Beam Floor Fragment of Buildings

Механика машин, механизмов и материалов, 2009
Natural oscillation frequencies of a hinge supported fragment for a reinforced concrete flooring consisting of a prefabricated hollow-core slab and monolithic girt beams on the floor contour are analyzed.
P.W. Aliawdin , Yu.A. Muzychkin
doaj  

Connection between Subsurface Layers and Surface Magnetic Activity over Multiple Solar Cycles Using GONG Observations

The Astrophysical Journal
We investigate the spatiotemporal evolution of high-degree acoustic-mode frequencies of the Sun and surface magnetic activity over the course of multiple solar cycles, to improve our understanding of the connection between the solar interior and ...
Mackenzie A. Baird, Sushanta C. Tripathy, Kiran Jain   +2 more
doaj   +1 more source

Application of adaptive chirp mode decomposition on parameter identification of sub/super‐synchronous oscillation signals

IET Generation, Transmission & Distribution, 2022
Identifying the parameters of sub/super‐synchronous oscillation (SubSO/SupSO) signals is challenging, because (1) the mode numbers of the oscillation signals are unknown, and (2) the oscillation signals are non‐stationary and noisy.
Xiaomei Yang, Haoyi Li, Yubo Mei, Xunyong Hu, Yang Wang, Xianyong Xiao   +5 more
doaj   +1 more source

Asteroseismology of solar-type stars with K2

, 2015
We present the first detections by the NASA K2 Mission of oscillations in solar-type stars, using short-cadence data collected during K2 Campaign\,1 (C1). We understand the asteroseismic detection thresholds for C1-like levels of photometric performance,
Aguirre, V. Silva, Antia, H. M., Appourchaux, T., Ball, W. H., Barclay, T., Basu, S., Bedding, T. R., Benomar, O., Buchhave, L. A., Buzasi, D. L., Campante, T. L., Casagrande, L., Chaplin, W. J., Christensen-Dalsgaard, J., Coelho, H. R., Creevey, O. L., Davies, G. R., Deheuvels, S., Elsworth, Y., Garc, R. A., Gaulme, P., Gizon, L., Handberg, R., Hekker, S., Houdek, G., Howell, S. B., Huber, D., Kallinger, T., Karoff, C., Kawaler, S. D., Kjeldsen, H., Latham, C. A., Latham, D. W., Lund, M. N., Lundkvist, M. S., Marcadon, F., Mathur, S., Miglio, A., Mosser, B., R, C., Roxburgh, I. W., Salabert, D., Serenelli, A., Soderblom, D. R., Stello, D., Verma, K., White, T. R.   +46 more
core   +3 more sources

Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics

Advanced Engineering Materials, EarlyView.
Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost, Lionel Presmanes, Soléna Colin, Marie Vidal, Sophie Guillemet‐Fritsch   +4 more
wiley   +1 more source