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 10 of 10 for “"Trace detection"”.
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Trace detection of mercury using boron-doped diamond electrodes
… to develop calibration curves for mercury detection in standard solutions in the ppb-ppt range, followed by using these curves for mercury measurements in unknown samples. DPV experiments were performed in nitrate, thiocyanate and chloride media. Investigation in the chloride medium is …
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Interactive Wireless Sensor for Remote Trace Detection and Recognition of Hazardous Gases
<p>The interactive wireless sensor detects many hazardous gases such as Hexane, Propane, Carbon monoxide and Hydrogen. These gases are highly toxic and used in different kinds of manufacturing industries, domestic purpose and so on. So, building a sensor that can detect this kind of gases can save …
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Ion Mobility Spectrometry : Optimization of Parameters in Collision Cross Sections and Trace Detection of Explosives
… interested topic in the research for substances detection in micro scale. No reliable analytical approach to calculate the collision cross section has been established to date. Different approaches rely on different mechanism will provide different results in significant extent. This work …
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Forensic Discrimination, Age Estimation, and Spectral Optimization For Trace Detection of Blood On Textile Substrates Using Infrared Spectroscopy and Chemometrics
… the scientific foundation for spectroscopic detection of biological fluids at crime scenes. Identifying these fluids using spectroscopy may replace existing presumptive chemical-based tests that have disadvantages (i.e., toxicity and sensitivity to light). The feasibility of remote …
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Paper-Based Sensors for Contaminant Detection Using Surface Enhanced Raman Spectroscopy
… is highly promising analytical technique for trace detection of analytes. It is particularly well suited for environmental analyses due to its high sensitivity, specificity, ease of operation and rapidity. The detection and characterization of environmental contaminants, using SERS is highly …
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Detection of vapor phase mercury species by laser fluorescence methods
… and rugged technique for real-time, continuous detection of mercury species vapors. Real-time, continuous emission measurements are important for process control, monitoring, and remediation. At present, there is no commercial continuous emission monitoring (CEM) technique or instrumentation to …
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Plasmonic Paper as a Novel Chem/Bio Detection Platform
… contact with real-world surfaces, enabling rapid trace detection. To realize multifunctional SERS substrates, paper substrates were cut into star-shaped structures and the fingers were differentially functionalized with polyelectrolytes that allows separation and pre-concentration of different …
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Design, Fabrication, and Characterization of Carbon Nanotube Field Emission Devices for Advanced Applications
… desktop mass spectrometer for explosives trace detection. This work demonstrated the first reported use of a CNT-based ion source capable of collecting CI mass spectra. The CNT-FE source demonstrated low power requirements, pulsing capabilities, and average lifetimes of over 320 hours when …
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On the use of mechanical and acoustical excitations for selective heat generation in polymer-bonded energetic materials
… there is a pressing need for improved explosives detection technologies suitable for trace vapor detection. In light of the strong dependence of vapor pressure on temperature, trace vapor detection capabilities may be enhanced by selectively heating target materials by external excitation. …
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An association rule dynamics and classification approach to event detection and tracking in Twitter.
… in 2006 as well as steady increase in event detection research on Twitter data (tweets) in recent years. With 284 million monthly active users Twitter has continued to grow both in size and activity. The network is rapidly changing the way global audience source for information and influence …