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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 133 for “"Square-wave"”.
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Square Wave Titrimetry
Made available in DSpace on 2014-12-05T19:36:25Z (GMT). No. of bitstreams: 1 0018145.pdf: 5004548 bytes, checksum: 7fc88dac23e75b573b4bb4900fe62d36 (MD5) Previous issue date: 1956
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Fast Fourier transform square wave voltammetry
… as a.unique digital data handling tool for square wave voltammetry. Theoretical square wave voltammogra.ms were examined to study the effect of experimental parameters in the spatial frequency domain. A new method was developed to determine truncation frequencies. A₀, the first spatial …
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Square-wave voltammetry detection for capillary electrophoresis
… this instrumentation, an ECD system based on square-wave voltammetry was developed (CE-SWV). Detection limits obtained with CE-SWV for neurotransmitters (150 nM, S/N = 3) were comparable to those obtained using more fragile and complex amperometric CE detection systems. While CE-SWV worked …
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High-frequency Quasi-square-wave Flyback Regulator
… modeling of zero-voltage-switching quasi-square-wave converters, a numerical methodology of parameters design is proposed based on the steady-state model of zero-voltage switching quasi-square-wave flyback converter. The magnetizing inductance is selected to guarantee zero-voltage …
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A Comparison of three phase induction motor performance subjected to frequency, voltage, and load changes by PWM and square wave inverters
… to frequency, voltage and load changes by Square wave inverter and Pulse Width Modulated (PWM) inverter. A computer program which is backed by a laboratory study is used to characterize the motor performance during the comparison. A 1 hp induction motor is tested by a Square wave and a PWM …
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The Venetian blind effect: Contrast disparity modulation in irradiation stereoscopy
… of slant in the venetian blind effect for a square-wave carrier spatial frequency of 3.14 c/deg and square-wave modulation spatial frequencies of 0.26, 0.39, 0.79, and 1.57 c/deg.</p><p>In Experiment 2 we increased the spatial frequencies. We measured contrast disparity thresholds for the …
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Coverage for Mobile Robots with Uncertainty
… system in which a robot is commanded to follow a square wave path in a rectangular region. We show that following a square wave path with passes parallel to the short axis performs better than following a square wave path with passes parallel to the long axis. This inspires a new strategy in which …
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Design and Numerical Simulation of the Real-time Particle Charge and Size Analyser
… (PLL) technique working in DC as well as sine-wave excitation fields, velocity estimation system based on Quadrature Demodulation (QD) technique under sine-wave excitation method, velocity estimation system using spectral analysis in square-wave excitation field and phase shift estimation based …
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The development of an electrochemical sensing device for controlled drugs.
… of voltammetric analyses of controlled drugs. A square wave voltammetric analysis of the novel psychoactive substance benzyl-piperazine is reported here, representing the first time this analysis has been established. A limit of detection of 6 μM was achieved, and resolution against the similar …
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Analytical determination of autocorrelation and noise power density spectrum of randomly modulated pulse width square waves
The Wiener theory of the minimum mean square error ·criterion is well furnished by knowing the autocorrelation function of the input to the linear system. This input signal is generally an additive mixture of a piecewise continuous message and a noise. The problem considered in this paper is the …
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Improvement of Fiber Optic System Performance by Synchronous Phase Modulation and Filtering at the Transmitter
… return-to-zero (RZ) modulation format, based on square-wave phase modulation and filtering of a continuous-wave (CW) signal, is investigated and compared with various modulation formats considered in the literature. We call this modulation format continuous-wave square-wave (CWSW). With CWSW an …
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Evaluation of the Cycle Profile Effect on the Degradation of Commercial Lithium Ion Batteries
… cycled using a pulse-heavy profile and a simple square-wave profile to investigate the effect of cycle profile on the capacity fade of the battery. The pulse-heavy profile was designed to simulate on-road conditions for a typical hybrid electric vehicle, while the simplified square-wave profile …
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Microwave Signal Generation Using Self-Heterodyning of a Fast Wavelength Switching SG-DBR Laser
Microwave signal generation is demonstrated using a single-chip fast wavelength-tunable SG-DBR laser. Microwave signals are established by a delayed self-heterodyne technique. The optical frequency of the laser is square-wave modulated between two closely spaced wavelengths. These two wavelengths …
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Design and Analysis of a Single-Stage Inverter Using Parallel DC-DC Converters for Solar Cell Application
… solar cell to produce a 10V<sub>PP</sub> 60Hz square wave output. The inverter consists of a solar cell, two DC-DC converters, two linear dropout (LDO) regulators, a square wave generator, and a switching circuit . The design and analysis of all parts were investigated individually in detail. …
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Design of electrode for electrochemical energy storage and conversion devices using multiwall carbon nanotubes
… electrodes using electroless deposition and square wave pulse potential deposition methods. Preliminary results show that we can increase volumetric capacitance of LbLMWNT/ MnO2 and LbL-MWNT/RuO2 composite up to 1000 F/cm3 in aqueous electrolytes. In addition, Pt and Pt/Ru alloy …
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Electrochemical Measurement of Metal Ions in Water
… in synthetic and real drinking water by square wave anodic stripping on a gold working electrode. The rate constant of the anodic stripping of Pb0 from gold has a rate constant of approximately k0 = 3 s-1. A set of square wave profiles defined by step height = 1 mV, pulse height = 30 mV, …
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