Results 101 to 110 of about 181,693 (317)

Challenges and Opportunities in Combining Ultrasound and Inductive Coupling for Energy Supply and Bidirectional Data Exchange in Bioelectronics Medicine Implant Networks

Advanced Intelligent Systems, EarlyView.
In this contribution, it is shown that miniaturized nerve stimulation implants can be used in collaborative networks. Inductive links and ultrasound are combined to supply these implants with energy and data; the advantages and disadvantages of each method, as well as safety risks and possibilities for improvement are discussed and the best ...
Benedikt Szabo, Jan Helmerich, Thomas Schaechtle, Ana Belen Amado‐Rey, Stefan Johann Rupitsch, Thomas Stieglitz   +5 more
wiley   +1 more source

Observation of Surface 2D Electron Gas in Highly Bulk‐Insulating Bi4I4

Annalen der Physik, EarlyView.
An annealing treatment is used to realize the tuning of the Fermi level of bulk crystals of the topological insulator Bi4I4. With appropriate annealing time, the crystals can be very insulating, along with the quantum oscillations of the surface state.
Dong Chen, Vicky Hasse, Chenguang Fu, Yu Pan, Claudia Felser   +4 more
wiley   +1 more source

Is sleep affected after microgravity and hypergravity exposure? A pilot study. [PDF]

J Sleep Res
Summary Sleep is known to be affected in space travel and in residents of the international space station. But little is known about the direct effects of gravity changes on sleep, if other factors, such as sleep conditions, are kept constant. Here, as a first exploration, we investigated sleep before and after exposure to short bouts of microgravity ...
Le Roy B, Jouvencel A, Friedl-Werner A, Renel L, Cherchali Y, Osseiran R, Sanz-Arigita E, Cazalets JR, Guillaud E, Altena E.   +9 more
europepmc   +2 more sources

Allen-Cahn and Cahn-Hilliard variational inequalities solved with Optimization Techniques [PDF]

, 2010
Parabolic variational inequalities of Allen-Cahn and Cahn- Hilliard type are solved using methods involving constrained optimization. Time discrete variants are formulated with the help of Lagrange multipliers for local and non-local equality and ...
Blank, Luise, Butz, Martin, Garcke, Harald, Sarbu, Lavinia, Styles, Vanessa   +4 more
core  

Moving From Micro‐ to Nanofibers Within Melt Electrospinning

Journal of Applied Polymer Science, EarlyView.
Controlling flow rate enables production of more nanofibers. This can be achieved even when electrospinning from viscous melts in a simple two‐plate geometry. Finding the optimal melt thickness to reduce flow without lowering the number of fiber‐forming jets is key.
Brent Boland, Neelam Sheoran, Jason R. Bochinski, Laura I. Clarke   +3 more
wiley   +1 more source

Structure of the Multiphase Chalcolithic Tell Chiselet–Grădiștea Fundeanca (Romania) From SH‐Wave Full‐Waveform Inversion, Borehole Geophysics and Coring

Archaeological Prospection, EarlyView.
ABSTRACT The emergence and development of settlement mounds, also called tells, is of major interest for the analysis of socio‐economic transformations occurring in the lower Danube plain during the East European Chalcolithic period. In this context, the multiphase chronology and structural layout of tells are highly relevant indicators, but small ...
Manuel Zolchow, Daniel Köhn, Natalie Pickartz, Martin Thorwart, Adrian Serbanescu, Ercan Erkul, Dennis Wilken, Stefan Dreibrodt, Robert Hofmann, Johannes Müller, Catalin Lazar, Wolfgang Rabbel   +11 more
wiley   +1 more source

Flux-Splitting Schemes for Parabolic Problems [PDF]

Computational Mathematics and Mathematical Physics, 2012
To solve numerically boundary value problems for parabolic equations with mixed derivatives, the construction of difference schemes with prescribed quality faces essential difficulties. In parabolic problems, some possibilities are associated with the transition to a new formulation of the problem, where the fluxes (derivatives with respect to a ...
openaire   +4 more sources

On some parabolic problems with measure sources

Moroccan Journal of Pure and Applied Analysis, 2019
One of the recent advances in the investigation of nonlinear parabolic equations with a measure as forcing term is a paper by F. Petitta in which it has been introduced the notion of renormalized solutions to the initial parabolic problem in divergence ...
Abdellaoui Mohammed
doaj   +1 more source

Boundary value problems for essentially-loaded parabolic equation

Қарағанды университетінің хабаршысы. Математика сериясы, 2018
In this paper we investigate the first boundary value problem for essentially loaded equation of heat conduction, i.e. when laden terms are derivatives for any finite order.
M.I. Ramazanov, M.T. Kosmakova, V.G. Romanovsky, B.H. Zhanbusinova, Zh.M Tuleutaeva   +4 more
doaj   +1 more source

Hydrogel microwells with customizable bottom design: A one‐step approach to spheroid formation

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Conical microwells featuring a variety of bottom‐shape features have received increased recognition because of their enhanced surface characteristics that improve the in vitro‐in vivo correlation in a wide range of biological applications, such as in three‐dimensional cell culture models, specifically cell spheroidal formation, and drug ...
Ahmad A. Manzoor, Omar M. Rahman, Roberto Tarantino, Peter Zastawny, Stephen D. Waldman, Dae Kun Hwang   +5 more
wiley   +1 more source