Search for dissertations about: "mass sensors"

Showing result 16 - 20 of 87 swedish dissertations containing the words mass sensors.

  2. 16. Interaction of CO and methane with platinum, Low-temperature oxidation and sensor response mechanisms

    Author : Elin Becker; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CO; Low-temperature activity; XAS; In situ spectroscopy; Environmental catalysis; Support material; Periodic operation; XANES; Chemical sensors;

    Abstract : The aim of this thesis project was to increase the understanding of the mechanisms for low-temperature oxidation of carbon monoxide and methane over supported platinum catalysts. In situ spectroscopic methods together with mass spectrometry were used to study the catalysts during both steady state and transient conditions. READ MORE

  4. 17. Unraveling the thermohaline structure of the Southern Ocean using functional data analysis

    Author : Etienne Pauthenet; Fabien Roquet; Jonas Nycander; Alberto Naveira Garabato; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Southern Ocean; Front; Water mass; Antarctic Polar Front; Descriptive Physical Oceanography; Functional Principal Component Analysis; Elephant Seal; Biologging; atmosfärvetenskap och oceanografi; Atmospheric Sciences and Oceanography;

    Abstract : The Southern Ocean connects the Indian, Pacific and Atlantic Oceans and provides a direct pathway to exchange mass, heat and salt across the Global Ocean, therefore playing an important role in the global climate system. Due to the complexity of its structure and the general inadequacy of its sampling, both in time and space, it remains a challenge to describe and visualize the three dimensional pattern of its circulation and the associated tracer distribution (temperature, salinity, oxygen or nutrients). READ MORE

  5. 18. Thermo- and chemosensitive properties of Transient Receptor Potential Ankyrin 1 ion channels

    Author : Lavanya Moparthi; Biokemi och Strukturbiologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TRP ion channels; TRPA1; ankyrin repeat domain; thermosensation; chemosensation; cold sensor; electrophiles; non-electrophiles; planar lipid bilayers; patch-clamp; fluorescence spectroscopy; mass spectrometry;

    Abstract : The ability to sense and accommodate to an ever-changing environment is crucial for the survival of living organisms. Transient Receptor Potential (TRP) ion channels comprise a large superfamily of cation conducting membrane proteins that function as molecular sensors in diverse sensory processes including perception of light, taste, smell, sound, touch and temperature. READ MORE

  6. 19. Micromachined Three-Axis Accelerometers and Sensor Readout Electronics

    Author : Henrik Rödjegård; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; three axis accelerometer; sensor readout; inertial sensors; gyroscope; MEMS; digital feedback; capacitive readout;

    Abstract : Miniaturized, MEMS-based, inertial navigation systems are used to track the position of moving objects without an external reference system. Several existing and future applications such as indoor navigation, stability control of vehicles, active prostheses or training aids for sportsmen would benefit from the small size and the low cost of micromachined inertial sensors. READ MORE

  7. 20. Instrumentation for energetic Neutral atom measurements at Mars, Venus and The Earth

    Author : Klas Brinkfeldt; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Energetic neutral atoms; instruments and techniques; mass spectrometry; microchannel plates; solid state detectors; solar wind interaction; planets; magnetosphere; exosphere; ring current; Space physics; Rymdfysik;

    Abstract : This thesis deals with the development and calibrations of sensors to measure energetic neutral atoms (ENAs) at Mars, Venus, and the Earth. ENAs are formed in charge exchange processes between energetic, singly--charged ions and a cold neutral gas. READ MORE