Global ETD Search
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 49 for “"impedance analysis"”.
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A Reliability and Criterion-Related Validity Study of Bioelectric Impedance Analysis (BIA)
… and criterion-related validity of bioelectrical impedance analysis (BIA) as a method of monitoring fluid changes in congestive heart failure (CHF) patients undergoing diuresis. Procedure. Thirty hospitalized CHF patients undergoing diuresis were measured with BIA and weighed prior to the …
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The development of micro-sample electrical impedance analysis for freeze-drying process development
… scanning calorimetry, dynamic mechanical analysis, Lyotherm, freeze-drying microscopy) are often used to measure the critical temperature during freeze-drying process development. But often, it is difficult to predict these critical temperatures as most data varies between the equipment …
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The use of bioelectrical impedance analysis for estimating the body composition of various fish species
… estimate body composition is lacking. Proximate analysis is the most dependable and accurate method for estimating internal composition, but it is lethal, time consuming, and expensive. Recent research has shown bioelectrical impedance analysis (BIA) to be an effective method for estimating …
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Use of bioelectrical impedance analysis (BIA) to predict water and energy content of juvenile Rainbow Trout (Oncorhynchus mykiss)
… of fish. Bomb calorimetry and proximate analysis are currently the most dependable and accurate methods to estimate energy content and body composition. However, bioenergetic studies that employ the traditional methodology necessitate the killing of fish to determine physiological …
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Bioelectrical impedance analysis as a predictor of fish health and energy content in juvenile rainbow trout (Oncorhynchus mykiss)
… using bomb calorimetry or proximate composition analysis; however, both of these methods necessitate sacrificing the fish in order to obtain accurate data. This has led to research into novel non-lethal methods of analyzing fish tissue so as to determine the body composition and health condition …
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Body Composition Assessment After Pediatric Liver Transplant
… whether multiple-frequency bioelectrical impedance analysis and ultrasound will accurately describe body composition and quality of weight gain. Methods Ten children (n=10) with a median age of 9.5 years were recruited from the liver transplant program at the University of Minnesota …
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The baroque bassoon: form, construction, acoustics and playing qualities
… a contrasting, earlier bassoon design. Acoustic impedance analysis is used to demonstrate connections between the instrument's internal design and its playing characteristics. The two reconstructed bassoons are found to have differing characteristics, and impedance analysis is shown to be helpful …
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Design, Fabrication and Characterization of a Microfluidic Device for Ultrasound-based Cell Sorting
… various design considerations and Finite Element Analysis (FEA) simulations. Placing the flow channel in the acoustic far-field provided the necessary traveling-wave regime. Subsequently, the device was fabricated by employing manufacturing processes like laser cutting, micromachining, and acrylic …
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Omega-3 fatty acid supplementation to improve body composition and perceived stress in collegiate athletes.
… and post-study measures included Bioelectrical Impedance Analysis (BIA), Omega-3 Index, and Perceived Stress Score (PSS). Results: No statistically significant changes were observed in either group after 8 weeks. Conclusions: FO n-3 supplementation did not significantly impact body composition …
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Advanced quartz crystal microbalance techniques applied to calixarene sensing membranes.
… below their lower explosive level.The impedance analysis technique involves the measurement of the electrical properties of the QCM around the resonant frequencies of crystal. Subsequent fitting of the measured spectra to an equivalent circuit allows parameters directly related to mass …
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Cesium hydrogen sulphate and cesium dihydrogen phosphate based solid composite electrolyte for fuel cell application
… had been dried during thermal conductivity analysis. According to supporting data in the literature it has been found that composites including silica could be influenced by the hydrophilicity and specific surface area of the silica. In the composite system employed it was shown by impedance …
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Potential for osteoporosis in selected dancers
… the Eating Disorder Inventory, the Bioelectrical Impedance Analysis machine, an activity level/menstrual status questionnaire, a three day diet record, and a demographic data form. The subjects were similar in age, age at menarche, and menstrual periods per year. The major differences between the …
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The influence of silvicultural manipulations on plethodontid salamanders
… salamanders. I found that bioelectrical impedance analysis (BIA) is likely not suitable for use with plethodontid salamanders and mass divided by snout-to-vent-length is likely a superior estimate to tail width divided by snout-to-vent-length. These findings further our understanding of …
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Statistical modelling of body composition in children and their parents
… of determining body composition, bioelectrical impedance analysis (BIA) and bony frame, in addition to anthropometry (body mass index in particular) and skinfolds. Parental body composition is thought to be influential on their children's body composition. Such influence does not necessarily …
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Characterising room temperature ionic liquids with acoustic wave devices
… smaller sample volumes. Quartz crystal impedance analysis has been used to assess whether room temperature ionic liquids behave in a Newtonian manner to determine the values of their square root viscosity-density product using small volumes. Values are compared to traditional viscometer …
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Impedance spectroscopy for cellular and biomolecular analysis
… known as ‘Lab On a Chip’ devices.<br/>Impedance spectroscopy is a non-invasive, label-free, analytical technique that is amenable to miniaturization, electronic integration, automation, and scalability within ‘LOC’ devices.<br/>This thesis describes a microfabricated device for …
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Mathematical Modeling and Analysis of Asthma Stability and Severity
… we first develop a complete system for lung impedance analysis of laboratory models of asthma. Our designed system is capable of precisely diagnosing the diseased models and predicting the severity of their condition. We also evaluate the treatment progress in mouse models of asthma. We then …
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Moisture measurements in concrete and characterization using impedance spectroscopy and RC network circuits
… properties of cement paste was developed. Impedance spectroscopy techniques are used to explore the moisture behavior in relation to dielectric and resistive properties of the sensors. The sensor capacitive response is frequency dependent and it has been described with a multi-linear curve. …
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Development of a TSM Biosensor for the Determination of DNA- Drug Interactions: A Novel Method to Assist Drug Development
… which drug-DNA interactions could be measured. Impedance analysis of the DNA coated sensor showed that DNA was bound rigidly to the sensor surface, and meant that the Sauerbrey relationship could be used to calculate the amount of DNA deposited. Immobilised DNA was exposed, in solution, to …
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