Results 31 to 40 of about 21,669,444 (330)

Topological Signals of Singularities in Ricci Flow [PDF]

open access: yes, 2017
We implement methods from computational homology to obtain a topological signal of singularity formation in a selection of geometries evolved numerically by Ricci flow.
Alsing, Paul M.   +6 more
core   +4 more sources

Memory-induced alignment of colloidal dumbbells

open access: yesScientific Reports, 2023
When a colloidal probe is forced through a viscoelastic fluid which is characterized by a long stress-relaxation time, the fluid is excited out of equilibrium. This is leading to a number of interesting effects including a non-trivial recoil of the probe
Karthika Krishna Kumar   +4 more
doaj   +1 more source

Structural Landscape of the Transition from an ssDNA Dumbbell Plus Its Complementary Hairpin to a dsDNA Microcircle Via a Kissing Loop Intermediate

open access: yesMolecules, 2021
The experimental construction of a double-stranded DNA microcircle of only 42 base pairs entailed a great deal of ingenuity and hard work. However, figuring out the three-dimensional structures of intermediates and the final product can be particularly ...
Alberto Mills, Federico Gago
doaj   +1 more source

Numerical modeling of rectangular channel with shallow dumbbell dimples based Code Saturne

open access: yesТруды Института системного программирования РАН, 2018
Numerical study was conducted for rectangular channel with dimples. Developed model was tested for adequacy by simulating of experiment, conducted by Dr. Terekhov, which was found in good agreement.
A. . Tsynaeva, M. . Nikitin
doaj   +1 more source

Protruding hydrogen atoms as markers for the molecular orientation of a metallocene

open access: yesBeilstein Journal of Nanotechnology, 2020
A distinct dumbbell shape is observed as the dominant contrast feature in the experimental data when imaging 1,1’-ferrocene dicarboxylic acid (FDCA) molecules on bulk and thin film CaF2(111) surfaces with non-contact atomic force microscopy (NC-AFM).
Linda Laflör   +2 more
doaj   +1 more source

Modified double dumbbell-shaped split-ring resonator-based negative permittivity metamaterial for satellite communications with high effective medium ratio

open access: yesScientific Reports, 2021
Metamaterial with negative permittivity demonstrate excellent performance in cutting-edge technology. Thus, this study modified the double dumbbell-shaped split-ring resonator (MDD-SRR) based negative permittivity for satellite communications.
Md Bellal Hossain   +3 more
doaj   +1 more source

Machine Learning Predicting Optimal Preparation of Silica-Coated Gold Nanorods for Photothermal Tumor Ablation

open access: yesNanomaterials, 2023
Gold nanorods (GNRs) coated with silica shells are excellent photothermal agents with high surface functionality and biocompatibility. Understanding the correlation of the coating process with both structure and property of silica-coated GNRs is crucial ...
Jintao Zhang   +7 more
doaj   +1 more source

Bipolar-Hyper-Shell Galactic Center Statrburst Model: Further Evidence from ROSAT Data and New Radio and X-ray Simulations [PDF]

open access: yes, 1999
Using the all-sky ROSAT soft X-ray and 408-MHz radio continuum data, we show that the North Polar Spur and its western and southern counter-spurs draw a giant dumbbell-shape necked at the galactic plane.
Berkhuijsen E.   +18 more
core   +3 more sources

Oscillations of finite-dimensional models of an extensible catenary [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
This article is devoted to the study of natural oscillation frequencies of finite-dimensional models of a stretchable flexible catenary. An analytical solution for two- and three-dumbbell models is presented, as well as the results of computer modeling ...
Degilevich, Egor A., Smirnov, Alexey S.
doaj   +1 more source

Graphene-Assisted Narrow Bandwidth Dual-Band Tunable Terahertz Metamaterial Absorber

open access: yesFrontiers in Physics, 2020
A tunable graphene terahertz metamaterial absorber is designed by treating a monolayer continuous dumbbell-shaped structure graphene layer, which can simultaneously realize the narrow bandwidth and dual-band absorption with transverse magnetic (TM ...
Dexian Yan   +8 more
doaj   +1 more source

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