Results 21 to 30 of about 196,189 (312)

Twisted Vortex State [PDF]

open access: yesPhysical Review Letters, 2006
We study a twisted vortex bundle where quantized vortices form helices circling around the axis of the bundle in a "force-free" configuration. Such a state is created by injecting vortices into rotating vortex-free superfluid. Using continuum theory we determine the structure and the relaxation of the twisted state.
Eltsov, V. B.   +6 more
openaire   +3 more sources

From Vortex Layers to Vortex Sheets

open access: yesSIAM Journal on Applied Mathematics, 1992
Summary: This paper shows that the solution of the Birkhoff-Rott equation for the vortex sheet can be approximated, for short times, by the solutions of the Euler equation for a thin vortex layer of vorticity, when its thickness vanishes and its verticity intensity diverges suitably.
BENEDETTO, Dario, PULVIRENTI, Mario
openaire   +1 more source

Label-free isolation of prostate circulating tumor cells using Vortex microfluidic technology

open access: yesnpj Precision Oncology, 2017
Prostate cancer: a “liquid biopsy” test for circulating tumor cells A microfluidic device can rapidly and efficiently isolate circulating tumor cells from the blood of prostate cancer patients.
Corinne Renier   +12 more
doaj   +1 more source

Energy Performance and Radial Force of Vertical Axis Darrieus Turbine for Ocean Energy

open access: yesEnergies, 2020
Vertical axis Darrieus turbine is the key component for ocean energy conversion and utilization. In the present work, the energy performance, flow pattern, and radial force for a vertical axis Darrieus turbine were investigated.
Runqiang Zhang   +4 more
doaj   +1 more source

Perception-Based Filtering for MMOGs

open access: yesInternational Journal of Computer Games Technology, 2008
Online games have exploded in the last few years. These games face several problems linked to scalability and interactivity. In fact, online games should provide a quick feedback of users' interactions as well as a coherent view of the shared world ...
Souad El Merhebi   +3 more
doaj   +1 more source

Flow Visualization of Spinning and Nonspinning Soccer Balls Using Computational Fluid Dynamics

open access: yesApplied Sciences, 2020
Various studies have been conducted on the aerodynamic characteristics of nonspinning and spinning soccer balls. However, the vortex structures in the wake of the balls are almost unknown. One of the main computational fluid dynamics methods used for the
Takeshi Asai   +3 more
doaj   +1 more source

Investigating circulating tumor cells and distant metastases in patient-derived orthotopic xenograft models of triple-negative breast cancer

open access: yesBreast Cancer Research, 2019
Background Circulating tumor cells (CTCs) represent a temporal “snapshot” of a patient’s cancer and changes that occur during disease evolution. There is an extensive literature studying CTCs in breast cancer patients, and particularly in those with ...
Vishnu C. Ramani   +12 more
doaj   +1 more source

Towards a Serious Game to Help Students Learn Computer Programming

open access: yesInternational Journal of Computer Games Technology, 2009
Video games are part of our culture like TV, movies, and books. We believe that this kind of software can be used to increase students' interest in computer science.
Mathieu Muratet   +3 more
doaj   +1 more source

Vortex Knots [PDF]

open access: yes, 1998
In this paper we present new results concerning the evolution and stability of vortex knots in the context of the Euler equations. For the first time, since Lord Kelvin’s original conjecture of 1875, we have direct numerical evidence of stability of vortex filaments in the shape of torus knots. The results are based on the analytical solutions of Ricca
Barenghi, CF, Ricca, R, Samuels, DC
openaire   +2 more sources

Profiling protein expression in circulating tumour cells using microfluidic western blotting

open access: yesNature Communications, 2017
Circulating tumour cells (CTCs) are rare cells found in the blood of certain cancer patients. Here, the authors develop a cytometry tool that appends a microfluidic western blot to a CTC isolation workflow and apply it to profile a panel of proteins in ...
Elly Sinkala   +11 more
doaj   +1 more source

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