Results 1 to 10 of about 807,477 (284)

Design of a Low-Reflection Flat Lens Antenna Based on Conformal Transformation Optics

open access: yesMicromachines, 2023
In this paper, a wideband flat lens antenna with low reflection and good performance is presented based on conformal transformation optics (CTO). Physical space optimization is applied to eliminate singular refractive index values. Furthermore, we employ
Fateme Nazarzadeh, Abbas Ali Heidari
doaj   +1 more source

An Overview of Selected Material Properties in Finite Element Modeling of the Human Femur

open access: yesBiomechanics, 2023
Specific finite detail modeling of the human body gives a capable primary enhancement to the prediction of damage risk through automobile impact.
Pourya Bazyar   +3 more
doaj   +1 more source

Customised Implant for Temporomandibular Joint: New Technique to Design and Stress Analysis to Balance the Loading at Both Ends

open access: yesMicromachines, 2023
The temporomandibular joint (TMJ) is a critical joint for the opening and closing of the mouth. The generation of customised TMJs according to individuals’ dental anatomy is needed.
Anubhav Tiwari   +4 more
doaj   +1 more source

Investigation of Dispersion, Interfacial Adhesion of Isotropic and Anisotropic Filler in Polymer Composite

open access: yesApplied Sciences, 2021
The movement of isotropic and anisotropic particles of iron and graphite within the polymer matrix was predicted and examined by the COMSOL simulation method.
Sneha Samal, Ignazio Blanco
doaj   +1 more source

Rationally isotropic quadratic spaces are locally isotropic. III [PDF]

open access: yesSt. Petersburg Mathematical Journal, 2010
In the sequel \(R\) denotes a semi-local regular integral domain containing a field of characteristic \(\neq 2\), such that all residue fields of \(R\) are infinite. Moreover \(K\) denotes the fraction field of \(R\). The main result of the paper under review is the following theorem: For any quadratic space \((V,\phi)\) over \(R\) isotropy of \((V ...
Panin, I., Pimenov, K.
openaire   +1 more source

ISOTROPIC MOTIVES [PDF]

open access: yesJournal of the Institute of Mathematics of Jussieu, 2020
AbstractIn this article we introduce the local versions of the Voevodsky category of motives with$\mathbb{F} _p$-coefficients over a fieldk, parametrized by finitely generated extensions ofk. We introduce the so-calledflexiblefields, passage to which is conservative on motives.
openaire   +2 more sources

A Revised Continuous Observation Length Model of Rough Contact without Adhesion

open access: yesMathematics, 2022
The real contact area of rough surfaces has significant importance in many engineering applications, such as tribology, wear, lubrication and seals. A continuous observation length-dependent mechanic model of rough contact without adhesion is proposed ...
Lan Zhang   +3 more
doaj   +1 more source

Biosynthesis of Gold Nanoisotrops Using Carallia brachiata Leaf Extract and Their Catalytic Application in the Reduction of 4-Nitrophenol

open access: yesFrontiers in Chemistry, 2022
The past decade has observed a significant surge in efforts to discover biological systems for the fabrication of metal nanoparticles. Among these methods, plant-mediated synthesis has garnered sizeable attention due to its rapid, cost-effective ...
Najwa Ahmad Kuthi   +4 more
doaj   +1 more source

High‐Performance Isotropic Thermo‐Electrochemical Cells Using Agar‐Gelled Ferricyanide/Ferrocyanide/Guanidinium

open access: yesGlobal Challenges, 2023
An isotropic thermo‐electrochemical cell is introduced with a high Seebeck coefficient (Se) of 3.3 mV K−1 that uses a ferricyanide/ferrocyanide/guanidinium‐based agar‐gelated electrolyte.
Lixian Jiang   +5 more
doaj   +1 more source

Nested structures approach in designing an isotropic negative-index material for infrared [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2009
We propose a new generic approach for designing isotropic metamaterial with nested cubic structures. As an example, a three-dimensional isotropic unit cell design “Split Cube in Cage” (SCiC) is shown to exhibit an effective negative refractive index on ...
Andryieuski Andrei   +2 more
doaj   +1 more source

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