Results 141 to 150 of about 1,122,667 (310)

Electrical treeing in XLPE insulation in frequency range between 20 and 500 Hz

open access: yes, 2005
Electrical tree is one of the main reasons for long term degradation of polymeric materials used in high voltage ac applications. In this paper we report an investigation of electrical tree growth characteristics in XLPE samples from a commercial XLPE ...
Tham, C H, Chen, G
core   +1 more source

A Preliminary Study on Debris Flow Grain-size Fractal Dimension

open access: yesShuitu baochi yanjiu, 2006
According to fractal theory,the definition and calculating method of grain-size fractal dimension for debris flow were presented,and grain-size fractal dimensions of the original grains in the source area,grains in debris flow fluid and grains in ...
NI Hua-yong~
doaj  

Fractal quasicondensation in one dimension

open access: yesPhysical Review B
8 pages (SM included)
Flavio Riche   +4 more
openaire   +2 more sources

A Sequential One‐Pot Block Copolymer Synthesis: Toward Mesoporous Carbon Materials for Selective CO2 Adsorption

open access: yesMacromolecular Rapid Communications, EarlyView.
A sequential one‐pot photo‐iniferter RAFT method greatly simplifies the synthesis of PAN‐based block copolymers, offering quick access to hierarchically porous, N‐doped carbon membranes. This scalable and reliable process allows for easy fabrication of functional materials important for carbon capture applications.
Björn Schmidt   +9 more
wiley   +1 more source

Parkinson's Disease and Retinal Age Gap: A Cross‐Sectional Analysis

open access: yesMovement Disorders, EarlyView.
Abstract Background Deep‐learning models are capable of predicting age from retinal scans and the difference between this and chronological age, retinal age gap, has been shown to be significantly associated with risk of mortality, cardiovascular diseases, and kidney failure.
Akshay Narayan   +9 more
wiley   +1 more source

Application of fractal analysis to assess the quality of the appearance of paint and varnish coatings

open access: yesMagazine of Civil Engineering
The article provides information on the use of fractal dimension in assessing the quality of the appearance of paint coatings. It was established that with an increase in the surface roughness of the coating, a decrease in the appearance quality grade ...
Loganina Valentina   +7 more
doaj   +1 more source

On the analyzing of bifurcation properties of the one‐dimensional Mackey–Glass model by using a generalized approach

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
The goal of this work is to look at how a nonlinear model describes hematopoiesis and its complexities utilizing commonly used techniques with historical and material links. Based on time delay, the Mackey–Glass model is explored in two instances. To offer a range, the relevance of the parameter impacting stability (bifurcation) is recorded.
Shuai Zhang   +5 more
wiley   +1 more source

Research of Calculation Model of Tangential Stiffness for Gear Joint Surface based on Anisotropic Fractal Theory

open access: yesJixie chuandong, 2017
On the basis of the M-B fractal model,and combining with distribution formula of two cylinders contact area,a calculation model of tangential contact stiffness for gear joint surface is set up by using anisotropic fractal geometric theory.The influence ...
Zhao Linlin, Huang Xiaoping
doaj  

Dynamic Analysis of Electrically Assisted Turbocharger Rotor Considering Contact Effects in Nut Structures

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The rotor system of an electrically assisted turbocharger (EAT) is composed of multiple shaft components; The nonlinear connection and contact effects make it difficult to determine the system dynamic characteristics. To improve the modeling accuracy of EAT rotor system and evaluate the influence of contact between multi‐axis components and ...
Wenchao Liang   +5 more
wiley   +1 more source

Fractal Dimension for Fractal Structures [PDF]

open access: yes, 2019
Manuel Fernández-Martínez   +3 more
openaire   +1 more source

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