The impedance analyzer
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This paper is organized into four parts. The next part shows the background of the simulation in the PCB design, while part III will focus on the SI simulation as well as analysis of the SI issues of the DDR3 memory.
7p viambani 18-06-2024 2 1 Download
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Ebook "Electrochemical impedance spectroscopy and its applications" presents a complete overview of the powerful but often misused technique of Electrochemical Impedance Spectroscopy (EIS). The book presents a systematic and complete overview of EIS. The book carefully describes EIS and its application in studies of electrocatalytic reactions and other electrochemical processes of practical interest. This book is directed towards graduate students and researchers in Electrochemistry.
369p tudohanhtau1006 29-03-2024 2 1 Download
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In this paper, the implementation of the PZT interface technique for monitoring strand breakage in a prestressed concrete anchorage zone is presented. First, the fundamental of the PZT interface for impedance monitoring is briefly reviewed. Second, a FE (finite element) analysis of a multi-strand concrete anchorage equipped with an array of PZT interfaces is analyzed to obtain impedance signatures under a series of strand breakage events.
9p nhanchienthien 25-07-2023 6 3 Download
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The paper deals with the non-destructive evaluation of the airgap existing between parts in loose metallic assemblies, using the eddy current (EC) method. In this study, the relationship between the variations of the impedance of a ferrite-cored coil sensor and an assembly featuring two aluminum plates is analyzed.
5p viporsche 25-10-2022 5 3 Download
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This paper introduces a method for estimating the maximum depth (sub-millimeter) of minor cracks on the surface of aluminum plates used in the aeronautical industry. A set of C-scan eddy current (EC) images, including real and imaginary parts of the impedance, is analyzed to extract suitable features after reducing noise effects, such as background noises and edge noises.
10p vikissinger 03-03-2022 11 1 Download
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The application of positive end-expiratory pressure (PEEP) may reduce dynamic strain during mechanical ventilation. Although numerous approaches for PEEP titration have been proposed, there is no accepted strategy for titrating optimal PEEP. By analyzing intratidal compliance profiles, PEEP may be individually titrated for patients.
10p vizhangzhidong 29-12-2021 8 0 Download
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The aim of this study was to examine qualitatively the effect of important electrochemical parameters on the faradaic impedance spectra of oxalic acid electroreduction. The impedance spectrum of a 3-step oxalic acid electroreduction mechanism was simulated by the solution of a faradaic impedance equation based on 3 state variables. Before the solution of the faradaic impedance equation, the electroreduction mechanism was analyzed and it was seen that this mechanism can be represented by an electrical circuit composed of 2 resistors and a capacitance or inductance.
15p langthannam 29-12-2021 17 0 Download
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The electrochemical impedance spectroscopy (EIS) responses of a polypyrrole (PPy)-coated platinum electrode were investigated during N2 -reduction to ammonia in aqueous medium. Kinetic parameters such as film resistance, pore resistance, and double layer capacitance were analyzed as a function of applied potential and polymer film thickness. The relation between kinetic parameters was discussed by combining electrolysis results.
12p langthannam 29-12-2021 8 0 Download
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Local antibiotic application has been widely used in orthopedic surgery. The dose-related toxicity of antibiotics towards periosteal tissues and resulting effects on osteogenic expression are yet to be studied.
10p vivermont2711 28-01-2021 12 2 Download
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Structural, optical, thermal and morphological studies were performed on pure Polyvinyl alcohol/ Methacrylic Acid e Ethyl Acrylate (PVA/MAA:EA (50:50)) blend and PVA/MAA:EA blend filled with different concentrations (5, 10 and 15 wt) of Lithium Perchlorate (PVA/MAA:EA: LiClO4) prepared by a solution casting method.
8p tamynhan4 06-09-2020 12 4 Download
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Proton-conducting polymer electrolyte films were prepared by dissolving NH4I salt in polyethylene oxide/methylcellulose (PEO/MC) blend polymers using the solution cast technique. The semi-crystalline nature of the sample was identified from the X-ray diffraction (XRD) pattern. The surface morphology on the electrical conductivity was analyzed by scanning electron microscopy (SEM).
9p tamynhan4 06-09-2020 13 1 Download
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Proton conducting polymer electrolytes based on PVA, amino acid proline and NH4SCN were prepared by the solution casting technique. An increase in the amorphous nature of the polymer electrolytes was confirmed by X-ray diffraction analysis. DSC measurements showed a decrease in Tg with increasing salt concentration
10p tamynhan4 06-09-2020 10 1 Download
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Crystalline perovskite La0,67−xLi3xTiO3 with x = 0.06, 0.11 and 0.15 were prepared by solid-state-solution reactions at 1350◦C from TiO2, La2O3 and Li2CO3. Crystalline structure of these compounds was analyzed by XRD method. The ionic conducting property of La0.67−xLi3xTiO3 was characterized on AutoLab.Potentiostat-PGS30 system with impedance technique using fitting software program available in the equipment. The highest ion conductivity at room temperature was found for the compound with x = 0.11, namely σ = 3.1× 10−5Scm−1.
6p 12120609 01-06-2020 10 1 Download
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This article focuses on creative education and management issues in schools; analyzes and assesses the current status of creative education in Vietnam high schools in Hanoi, Nam Dinh and Quang Ninh through a survey for 190 teachers and 220 students from three high schools about factors that form creative education, the level of expression and relationship between the components of creative education as well as factors that impede creative education development in high schools; thereby making recommendations on educational management in Vietnam today.
15p capheny 29-02-2020 21 1 Download
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This article focuses on creative education and management issues in schools; analyzes and assesses the current status of creative education in Vietnam high schools in Hanoi, Nam Dinh and Quang Ninh through a survey for 190 teachers and 220 students from three high schools about factors that form creative education, the level of expression and relationship between the components of creative education as well as factors that impede creative education development in high schools; thereby making recommendations on educational management in Vietnam today.
15p capheny 28-02-2020 28 1 Download
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Knowledge Management literature lays emphasis on the fact that a major chunk of knowledge dissemination occurs through the various forms of social networks that exist within the organizations. A social network is a simple structure comprising of set of actors or nodes that may have relationships ties with one another. The social network analysis (SNA) will help in mapping and measuring formal and informal relationships to understand what facilitates or impedes the knowledge flows that bind interacting units.
18p kequaidan1 05-11-2019 16 1 Download
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In this study, we present an approach for CPR quality evaluation using ECG and thoracic impedance signals via a least mean square based adaptive filter. Then, CPR quality evaluation is performed based on analyzing the spectra and frequencies of input ECG and estimated CPR signals.
6p visasuke2711 25-04-2019 15 0 Download
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The frequency dependence of the impedance (C) and AC conductance (G) of all the samples were recorded in a frequency range lower than 10 MHz by using an impedance analyzer HP 4192A. It was found that in the low frequency range lower than 1 MHz the dielectric constant and its loss decrease as Ca substituted for Ba. Besides an abnormal in the frequency dependence of the dielectric constant was observed for all samples in the higher frequency range up to 10 MHz.
7p thuyliebe 09-10-2018 20 1 Download
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This study is focused on the synthesis of a polyindole doped by indole-3 butyric acid (PI-IBA). IR analyze indicated that the linkage positions of indole involves the position 2 and 3 of the monomer and the insertion of IBA in the polymer backbone. Polyindole IBA doped was incorporated into epoxy resin for protection anticorrosion of carbon steel. The electrochemical impedance measurements show a significantly improvement of protective properties in presence of PI-IBA in comparison with pure epoxy and epoxy containing polyindole coating.
6p uocvong01 24-09-2015 45 3 Download
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Polyaniline has been electrochemically formed on stainless steel in sulphuric acid 0.5 N with and without KClO3. The CV spectrum style and the peak characteristic parameters, as peak potential Ep, peak current Jp, peak charges quantity Qp, then have been analyzed under a consideration of the effect of KClO3. The resistance of the PANi films was studied using electrochemical impedance measurement. It has been found that KClO3 has affected the PANi morphology much more than the CV spectrum.
6p uocvong01 24-09-2015 35 3 Download