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 4 of 4 for “"NDIR"”.
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Carbon nanotube based carbon dioxide gas sensors for respiratory monitoring.
… into currently used non-dispersive infra red (NDIR) CO2 sensors, it was deemed unnecessary to further investigate this technique. The sensor development approach in this thesis has been creation of a solid-state CO2 sensor through merging of state-of-the-art research in different disciplines - …
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Building a Low-Cost Portable VO2 Max Mask
… pressure, electrochemical oxygen, and NDIR carbon dioxide), an ESP32 microcontroller with Bluetooth Low Energy transmission, and a Python-based logging and analysis pipeline. The system incorporates a BLE protocol that accommodates differing sensor sampling rates, while a mixing-chamber …
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Macro to Micro Legacies of Landuse at the Calhoun Critical Zone Observatory
… including Vaisala™ non-dispersive infrared (NDIR) CO2 probes and electro-chemical Apogee™ O2 meters for flow-through gas analyses of soil gas using a Cole-Parmer™ vacuum-pressure pump. More than 1600 soil gas measurements have been made using these devices over more than 2 years of …
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The Effects of Inorganic Solids and Certain Gases on the Thermal Decomposition of Catechol
In order to investigate the effects of calcium carbonate and iron oxide on the thermal decomposition of solid fuels, we have constructed an isothermal flow reactor to perform experiments on the model compound catechol (ortho-dihydroxybenzene), a phenol-type compound representative of coal, wood and …