Search for dissertations about: "Impedance Spectroscopy"

Showing result 21 - 25 of 113 swedish dissertations containing the words Impedance Spectroscopy.

2. 21. Biophysical studies of pigment transport in frog melanophores : impedance measurements and advanced microscopy analyses

   Author : Charlotte Immerstrand; Patrik Rorsman; Linköpings universitet; []
   Keywords : MEDICINE; MEDICIN;

   Abstract : Small proteins, other molecules and large organelles are frequently transported from one location to another within cells. These transports employ cytoskeletal networks and enable cells to maintain regions with different functions and attain an asymmetrical shape. READ MORE

4. 22. Planar-Goubau-line components for terahertz applications

   Author : Juan Cabello Sánchez; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; planar Goubau line; Through-Reflect-Line TRL calibration; stopband filter; on-wafer measurements; vector network analyzers VNA ; silicon membrane; power divider; Impedance-matched load; terahertz spectroscopy; microfluidic channels;

   Abstract : Terahertz-wave technology has a broad range of applications, including radio astronomy, telecommunications, security, medical applications, pharmaceutical quality control, and biological sensing. However, the sources, detectors, and components are less efficient at this frequency band due to parasitic effects and increased total losses, which hinder the performance of terahertz systems. READ MORE

5. 23. Electrical Bioimpedance Cerebral Monitoring: Fundamental Steps towards Clinical Application

   Author : Fernando Seoane Martinez; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biomedical Instrumentation; Ischemia; Hypoxia; Non-invasive Monitoring; Electrical Bioimpedance Spectroscopy; Stroke; Impedance Measurements; Brain Monitoring;

   Abstract : Neurologically related injuries cause a similar number of deaths as cancer, and brain damage is the second commonest cause of death in the world and probably the leading cause of permanent disability. The devastating effects of most cases of brain damage could be avoided if it were detected and medical treatment initiated in time. READ MORE

6. 24. Arbitrary Waveform Impedance Spectroscopy for Characterization and Diagnostics of High Voltage Insulation

   Author : Björn Sonerud; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; insulation testing; aging; monitoring; discrete Fourier transforms; Dielectric measurements; dielectric materials;

   Abstract : In high voltage engineering the dielectric response technique is a widely used tool both for characterization of insulation materials and for diagnostics of components such as transformers and cables. Currently available techniques are not capable of measuring on-line which would be advantageous; when characterizing a material and evaluating the effect of different voltage magnitudes, waveforms and temperatures it is desirable to be able to observe the continuous development of the dielectric properties. READ MORE

7. 25. Kinetic investigation of LiMn2O4 for rechargeable lithium batteries

   Author : Anna-Karin Hjelm; KTH; []
   Keywords : linear sweep voltammetry; electrochemical impedance spectroscopy; potential step; in situ X-ray diffraction; microelectrodes; electrode kinetics; LiMn2O4 cathode; rechargeable lithium batteries;

   Abstract : This thesis is concerned with kinetic characterisation of theinsertion compound LiMn2O4, which is used as positive electrodematerial in rechargeable lithium batteries. Three different typesof electrode configurations have been investigated, namely singleparticles, thin films and composite electrodes. Differentelectrochemical techniques, i.e. READ MORE