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1

Johansson, Cecilia. "High-sensitivity Radioactive Xenon Monitoring and High-accuracy Neutron-proton Scattering Measurements." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4279.

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2

SALA, ELENA. "Development of low level counting systems for high sensitivity measurements." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2014. http://hdl.handle.net/10281/52031.

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Low level counting techniques are a powerful tools in many different fields including biological and chemical tracer studies, archaeological and geological dating, investigation of natural and induced radioactivities and the study of fundamental particles physics. Since they play a crucial role in many applications, developments are continuously pursue to improve the extreme sensitivity typical of these techniques. The fundamental request of low level counting techniques is the capability to detect feeble signals, characterized by low counting rates, above the background composed of spuriou
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Dyroff, Christoph. "Tunable diode laser absorption spectroscopy for trace gas measurements with high sensitivity and low drift." Karlsruhe Univ.-Verl. Karlsruhe, 2008. http://d-nb.info/992791588/04.

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4

Lemire, Matthieu. "Accurate surface dose measurements in CT examinations using high sensitivity MOSFET dosimeters calibrated by Monte Carlo simulations." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=98747.

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The objective of this work is to use MOSFET dosimeters to accurately measure surface dose delivered during CT examinations in various scanning conditions. To achieve this, the behaviour of MOSFETs under kilovoltage x-ray irradiation first needed to be investigated. A dose-to-dose reproducibility of 4.5%, and a mean change in sensitivity response of 10.4% with accumulated dose were measured. A Monte Carlo model of the x-ray source of a PQ5000 CT simulator was built and validated in order to investigate the MOSFET response characteristics and perform dose calculations. An over-response of 10% wa
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Venturelli, Michela. "Ultra-cold atomic magnetometry : realisation and test of a 87Rb BEC for high-sensitivity magnetic field measurements." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10055887/.

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The development of an experimental apparatus to produce Bose-Einstein condensates (BECs) of 87Rb atoms and their application to magnetometry are discussed. Optical detection of atomic Larmor precession is a widely explored method for high-sensitivity measurements of magnetic fields. In this context, short laser/atom interaction time, atomic thermal diffusion and decoherence effects are among the main limitations. In this thesis, we overcome such problems by using spin-polarised 87Rb ultra-cold atoms as the sensing element. After the atoms are polarised, a resonant pulse of radio-frequency exci
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Botta, Verdiana. "High-sensitivity strain measurements from underground interferometric stations: geodynamic phenomena at Gran Sasso and first records from Canfranc." Doctoral thesis, Universita degli studi di Salerno, 2013. http://hdl.handle.net/10556/861.

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2011 - 2012<br>Earth's surface and interior continuously deform as a result of geological and geophys- ical processes. To study these phenomena and to understand better the rheological properties of the Earth, measurements of Earth's deformation become of fundamental importance, providing a critical link between Earth's structure and dynamics, also in order to optimize the response to natural hazards and identify potential risk areas. The study of crustal deformation is a complex but very important research topic that encompasses several scienti c disciplines, including di erential geome
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7

Ceteroni, Ilaria. "High-pressure adsorption differential volumetric apparatus (HP-ADVA) for accurate equilibrium measurements." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22274/.

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The volumetric system is a commonly used experimental method for gas adsorption measurements. Starting from the conventional volumetric system (single-branched), the development of differential (double-branched) apparatus has been proposed to overcome some criticalities connected to the original design. The following study is focused on the assessment of the high-pressure differential volumetric apparatus (HP-ADVA) built at the University of Edinburgh in order to discover and characterise system peculiarities at different experimental conditions, in terms of temperature and pressure. To do thi
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8

Dyroff, Christoph [Verfasser], and W. [Akademischer Betreuer] Freude. "Tunable Diode-Laser Absorption Spectroscopy for Trace-Gas Measurements with High Sensitivity and Low Drift / Christoph Dyroff ; Betreuer: W. Freude." Karlsruhe : KIT Scientific Publishing, 2009. http://d-nb.info/1185540571/34.

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9

JIMENEZ, JUAN DARIO TIMARAN. "METHODS BASED ON COMPUTATIONAL INTELLIGENCE TECHNIQUES FOR LOCALIZATION OF FIREARMS PROJECTILES INSERTED INTO THE HUMAN BODY, BY HIGH SENSITIVITY MAGNETIC MEASUREMENTS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=32028@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>Um dos casos clínicos mais frequentes na sociedade moderna envolve a localização e extração de projéteis de armas de fogo, que normalmente são feitos de chumbo, um material não ferromagnético. O desenvolvimento de uma técnica que possibilite a localização precisa destes auxiliará o procedimento de remoção cirúrgica, tendo vasta relevância e impactando diretamente no aumento da taxa de sobrevivência de pessoas feridas. Dessa forma, esta disser
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10

Mattila, S. (Sampo). "Measurement and minimization of field inhomogeneities in high resolution NMR." Doctoral thesis, University of Oulu, 2001. http://urn.fi/urn:isbn:9514264762.

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Abstract In this work, the homogeneity of both the B0 and B1 fields was studied. Both B0 and B1 field homogeneities are the basic assumptions of high resolution liquid state NMR. Although some inhomogeneity of both of the fields is always present, the spectrometers can be operated, with the help of the developed spectral purging techniques, without giving any thought to the field inhomogeneities or the necessary actions to minimize their adverse effects. Although the effect of B0 inhomogeneity can occasionally be seen, the B1 fieldin a modern probe head is often assumed to be sufficiently homo
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11

Shang, Ruibo. "Spectral domain interferometry: A high-sensitivity, high-speed approach to quantitative phase imaging." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/54001.

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Many biological specimens are transparent and in weak intensity contrast, making it invisible using conventional bright field microscopes. Therefore, the phase-based optical microscopy techniques play important roles in the development of the modern biomedical science. Furthermore, the ability to achieve quantitative phase measurement of the tiny structures of biomedical specimens is of great importance for many biomedical applications. Thus, quantitative phase imaging becomes an important technique to measure the phase variations due to the difference of refractive index and geometric thickne
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12

Abdulhamed, Bilal Khudhur Abdulhammed. "Digital Instantaneous Frequency Measurement Receiver for Fine Frequency and High Sensitivity." Wright State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1559548084463134.

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13

Pullins, Clayton Anthony. "High Temperature Heat Flux Measurement: Sensor Design, Calibration, and Applications." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/27789.

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This effort is focused on the design, calibration, and implementation of a high temperature heat flux sensor for thermal systems research and testing. The High Temperature Heat Flux Sensor (HTHFS) was designed to survive in the harsh thermal environments typically encountered in hypersonic flight, combustion and propulsion research, and large-scale fire testing. The sensor is capable of continuous use at temperatures up to 1000 â ¦C. Two methods for steady-state calibration of the HTHFS at elevated temperatures have been developed as a result of this research. The first method employs a water-
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14

SILVA, EDUARDO COSTA DA. "HIGH SENSITIVITY GMI MAGNETOMETER FOR THE MEASUREMENT OF ULTRA-WEAK MAGNETIC FIELDS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2013. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=34491@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Esta Tese teve por objetivo desenvolver um magnetômetro de alta sensibilidade, baseado nas características de fase do efeito da Magnetoimpedância Gigante (GMI – Giant Magnetoimpedance), para medição de campos magnéticos ultra-fracos. Elementos sensores GMI apresentam grande potencial na fabricação de magnetômetros que conciliem alta sensibilidade e elevada resolução espacial com baixo custo. A otimização da sensibilidade do transdutor magnético é diretamente afetada pela sensi
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15

Bustamante, Danilo. "High-Precision, Mixed-Signal Mismatch Measurement of Metal-Oxide-Metal Capacitors and a 13-GHz 5-bit 360-Degree Phase Shifter." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/9240.

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A high-precision mixed-signal mismatch measurement technique for metal-oxide metal (MoM) capacitors as well as the design of a 13-GHz 5-bit 360-degree phase shifter are presented. This thesis presents a high-precision, mixed-signal mismatch measurement technique for metal-oxide–metal capacitors. The proposed technique incorporates a switched-capacitor op amp within the measurement circuit to significantly improve the measurement precision while relaxing the resolution requirement on the backend analog-to-digital converter (ADC). The proposed technique is also robust against multiple types of e
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16

Marn, Allison M. "Interferometric imaging for high sensitivity multiplexed molecular measurements." Thesis, 2021. https://hdl.handle.net/2144/43089.

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The diagnostic and pharmaceutical industries rely on tools for characterizing, discovering, and developing bio-molecular interactions. Diagnostic assays require high affinity capture probes and binding specificity for accurate detection of biomarkers. Selection of drug candidates depends on the drug residency time and duration of drug action. Further, biologic drugs can induce anti-drug antibodies, which require characterization to determine the impact on the drug safety and efficacy. Label-free biosensors are an attractive solution for analyzing these and other bio-molecular interactions beca
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17

Lin, Huei-Ting, and 林卉婷. "Improved measurements for high precision and high sensitivity uranium isotopic ratio and concentration by quadrupole inductively coupled plasma mass spectrometer." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/77503158076612394530.

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碩士<br>國立臺灣師範大學<br>地球科學系<br>93<br>Uranium isotopic composition and concentration have been widely applied to various fields in the earth sciences. This work focused on the improvement of analytical technique for uranium isotopic ratio and concentration measurements by Quadrupole Inductively Coupled Plasma Mass Spectrometer (Q-ICPMS). To approach the goal of permil-level analytical precision with only ng-U sample sizes, three strategies were applied. First, the Q-ICPMS was connected to a micro-concentric nebulization (MCN) introduction system to amplify sensitivity and to reduce required samp
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18

Yang, Hui-Ping, and 楊蕙萍. "The relationships between high-sensitivity C-reactive protein (hs-CRP) and anthropometric measurements, blood biochemistry and dietary intake in diabetic patients with metabolic syndrome." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/50031740795496048260.

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碩士<br>輔仁大學<br>營養科學系<br>99<br>The purpose of this study was to assay the relationship between high sensitivity C-reactive protein (hs-CRP) and anthropometric measurements, blood biochemistry and dietary intakes in diabetic patients with metabolic syndrome. From May to December, 2008, 40 outpatients with diagnosed metabolic syndrome, 12 male and 28 females, the average age of 55±12 year were recruited from Cathay General Hospital Endocrine Branch in this study. The dietary investigation included 3-day dietary record and 24-hour diet recall by the dietitian, and the blood biochemistry values, blo
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19

Li, Xuan-Wei, and 李軒緯. "Measurement of Small Displacement Based on High Sensitivity Total-Internal-Reflection Interferometry." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/80941270078115384351.

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碩士<br>國立彰化師範大學<br>機電工程學系所<br>104<br>This thesis designs a small displacement sensor based on highly sensitive total internal reflection (TIR) interferometry. A heterodyne light beam reflected by a plane mirror penetrates into a high-sensitivity TIR apparatus (composed of a half- and two quarter- wave plates and an analyzer) at an angle larger than a critical angle. When the azimuth angles of these wave plates and the analyzer are properly selected, the final phase difference between p- and s- polarizations emerging from the apparatus can be greatly enhanced A small displacement of the mirror c
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20

Santi, Delli. "ULTRA-SENSITIVE SPECTROSCOPIC MEASUREMENT OF RADIOCARBON DIOXIDE IN SAMPLES FOR RELEVANT APPLICATIONS." Doctoral thesis, 2021. http://hdl.handle.net/2158/1236015.

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In recent years, the interest for mid infrared radiation has increased for both fundamental research and industrial applications, thanks to the development of continuous-wave room-temperature sources, such as quantum cascade lasers, which fulfill the requests for relatively high power, narrow emission and compact size. The main absorption lines of simple molecules lie in this spectral region and the study of their absorption spectra can give precise information on their concentration. Both these aspects enabled widespread applications of tunable laser absorption spectroscopy for real-time, in-
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21

Chen, Yu-Yun, and 陳昱澐. "Measurement of two-dimensional refractive index distribution using high sensitivity total-internal-reflection phase-shifting interferometry." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/5s443a.

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碩士<br>國立彰化師範大學<br>機電工程學系<br>106<br>In this thesis, a high-sensitivity total-internal-reflection (TIR) phase-shifting interferometry is proposed for measuring the two-dimensional (2D) refractive index distribution of a material. A linearly-polarized expanding beam after traveling through a Soleil-Babinet compensator and a spatial filter enters into a high-sensitivity TIR apparatus. The TIR apparatus consists of a phase shifter (formed by combining a half-wave plate and a quarter-wave plate that display specific optic-axis azimuths), an isosceles right-angle prism whose base is directly contacte
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Tuling, Alison S. "Design of a Torsion Measurement System of High Stiffness and Sensitivity to Study Yield in Low Carbon Steels." Thesis, 2007. http://hdl.handle.net/10539/2009.

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Student Number : 9102778K - MSc(Eng) dissertation - School of Chemical and Metallurgical Engineering - Faculty of Engineering and the Built Environment<br>Strain ageing anisotropy, a surprising property of iron, implies that interstitials, which are non-lattice obstacles, can give non-symmetrical opposition to glide. Al- though this has been investigated by others, it is shown that it is di±cult to eliminate extraneous residual stresses during testing. An Avery torsion machine was adapted for the study of strain ageing anisotropy through the design of a torque and twist measurement sys
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Chia-HuiChen and 陳佳暉. "High Sensitivity Microwave Sensors Using Intermodulation Multiplication and Amplitude-Based Demodulation Techniques for Local Pulse Wave Velocity Measurement." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/s6789q.

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Chang, Ueinn-chang, and 張原彰. "A system for high sensitivity measurement of twisted nematic liquid crystal display cell gap by using a photo-elastic modulator." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/58126896303547303290.

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25

yuam, Chung-Tung, and 袁正東. "A System for High Sensitivity Measurement of Birefringence and Cotton-Mouton (Kerr) of Ferroelectric liquid crystal using a Photo - Elastic Modulator." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/37266662484147101101.

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