scholarly journals Modeling of the bidirectional transaction motion generator with selfexcitation.

2015 ◽  
Vol 2015 (1) ◽  
pp. 41-45
Author(s):  
Леонид Потапов ◽  
Leonid Potapov ◽  
Татьяна Сморудова ◽  
Tatyana Smorudova
Keyword(s):  
Magnetic Core ◽  
Comsol Multiphysics ◽  
Constant Magnet ◽  
Motion Generator

Offered design of the bi-directional transaction motion generator with self-excitation without constant magnet. By means of COMSOL Multiphysics software is organized research of the distribution by magnetic flap under different positions rolling magnetic core, is brought model of the offered generator in program Electronics Workbench with determination of the voltages and current in load and winding of the generator.

scholarly journals ESR as a monitoring method of the interactions between TEMPO-functionalized magnetic nanoparticles and yeast cells

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Ryszard Krzyminiewski ◽  
Bernadeta Dobosz ◽  
Grzegorz Schroeder ◽  
Joanna Kurczewska
Keyword(s):  
Magnetic Nanoparticles ◽  
Drug Carriers ◽  
Magnetic Core ◽  
Yeast Cells ◽  
Spin Labels ◽  
Monitoring Method ◽  
Functionalized Magnetic Nanoparticles ◽  
Spin Resonance

AbstractPotential application of magnetic nanoparticles as drug carriers in medical treatment requires prior determination of their effects on cells. In this work different spin labels and magnetic nanoparticles functionalized with spin labels as well as their interaction with yeast cells were investigated using electron spin resonance (ESR) method. ESR was demonstrated to be a suitable method for monitoring of magnetic core and attached spin labels. Particular emphasis was placed on characterization of endocytosis and redox processes running inside the cell, resulting in recombination of spin labels. Such data could only be obtained at reduced temperature of ESR measurements.

Inductive Sensor with Sintered Magnetic Core to Evaluate the Performances of the Table Tennis Players

2011 ◽  
Vol 672 ◽  
pp. 105-108 ◽  
Author(s):  
Gabriel Ioan Mangra ◽  
Sorin Vasile Savu ◽  
Danut Savu
Keyword(s):  
Performance Evaluation ◽  
Magnetic Core ◽  
Experimental Results ◽  
Tennis Player ◽  
Table Tennis ◽  
Tennis Players ◽  
The Impact ◽  
Contact Sensors ◽  
Reaction Speed

The reaction speed of the tennis player and the speed of the ball after the impact to the tennis blade, they both are important elements of the performance evaluation of a tennis player. The determination of those parameters is possible by using specialized contact sensors. Permanent ceramic magnets can be used to process such sensors and the paper presents the experimental results concerning the processing of such magnets of barium hexaferritte powders

scholarly journals A Novel Signal-Amplified Immunoassay for the Detection of C-Reactive Protein Using HRP-Doped Magnetic Nanoparticles as Labels with the Electrochemical Quartz Crystal Microbalance as a Detector

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Ning Gan ◽  
Ping Xiong ◽  
Ji Wang ◽  
Tianhua Li ◽  
Futao Hu ◽  
...  
Keyword(s):  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Microtiter Plate ◽  
Electrochemical Quartz Crystal Microbalance ◽  
Magnetic Core ◽  
Enzyme Linked Immunosorbent Assay ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Insoluble Product

A novel horseradish peroxidase- (HPR-) doped magnetic core-shell Fe3O4@SiO2@Au nanocomposites (Fe-Au MNPs) were employed on immunoassay for the determination of C-reactive protein (CRP) based on a electrochemical quartz crystal microbalance detector (EQCM). Firstly, the secondary CRP antibody and HRP were both immobilized on the Fe-Au MNPs (Fe-Au MNPs-anti-CRP2/HRP) as a signal tag. Secondly, the above tag and the primary antibody (anti-CRP1) in the bottom of 96-well microtiter plate were employed to conjugate with a serial of CRP concentrations to produce a sandwich immunocomplex. Thirdly, the immunocomplex solution was subsequently exposed to3,3′-diaminobenzidine (DAB) in the presence of H2O2, resulting in an insoluble product. When the precipitation solution was dripped on EQCM, it can achieve a decrease of frequency of crystal (Δf). The amount ofΔfwas proportional to (CRP) from 0.003 to 200 ng mL−1with a low detection limit of 1 pg mL−1. Compared with the enzyme-linked immunosorbent assay (ELISA), the immunoassay shows greatly improved sensitivity due to the significant amount of HRP labeled on signal tag. It also has good specificity and low sample consumption, which is expected to be a benefit for the CRP screening in early diagnosis of cardiovascular disease.

scholarly journals Modeling Electric Field and Potential Distribution of an Model of Insulator in Two Dimensions by the Finite Element Method

2018 ◽  
Vol 3 (1) ◽  
pp. 01
Author(s):  
Nassima M ziou ◽  
Hani Benguesmia ◽  
Hilal Rahali
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electric Field ◽  
Potential Distribution ◽  
Two Dimensions ◽  
Comsol Multiphysics ◽  
The Finite Element Method ◽  
Good Agreement ◽  
Element Method

The electrical effects can be written by two magnitudes the field and the electrostatic potential, for the determination of the distribution of the field and the electric potential along the leakage distance of the polluted insulator, the comsol multiphysics software based on the finite element method will be used. The objective of this paper is the modeling electric field and potential distribution in Two Dimensions by the Finite Element Method on a model of insulator simulating the 1512L outdoor insulator used by the Algerian company of electricity and gas (SONELGAZ). This model is under different conductivity, applied voltage, position of clean layer and width of clean layer. The computer simulations are carried out by using the COMSOL multiphysics software. This paper describes how Comsol Multiphysics have been used for modeling of the insulator using electrostatic 2D simulations in the AC/DC module. Numerical results showed a good agreement.

scholarly journals Determination of magnetic core parameters of electromagnetic elements of ferro-vortex apparatus

2020 ◽  
Author(s):  
Andrey Adoshev ◽  
Sergey Antonov ◽  
Alexander Ivashina ◽  
Nikita Garkavenko
Keyword(s):  
Magnetic Core ◽  
Vortex Apparatus
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