Sökning: "positive temperature coefficient"
Visar resultat 1 - 5 av 16 avhandlingar innehållade orden positive temperature coefficient.
1. High temperature CTMP from birch
Sammanfattning : This thesis is intended to contribute to understanding of the chemithermomechanical pulping of birch intended for high freeness grades. It focuses on the effects that conditions during pre‐treatment, i.e. LÄS MER
2. Electrical properties of carbon black-filled polymers
Sammanfattning : .... LÄS MER
3. Silicon carbide field-effect devices studied as gas sensors for exhaust gas monitoring
Sammanfattning : Metal-insulator-silicon carbide (MIS) structures have been studied as gas sensors. We have investigated how the sensors detect gases, how fast they do that, and how they could be used for exhaust gas monitoring.We have prepared simple field-effect devices, MIS-capacitors and Schottky diodes, on silicon carbide with platinum gates. LÄS MER
4. Heat transfer in ordered porous media with application to batteries
Sammanfattning : Environmental concerns, resource depletion, energy security, technological advancements, and global policies are just a few of the variables influencing the global energy perspective. In the case of technological advancement, lithium batteries play a key role in the development of a more sustainable energy infrastructure. LÄS MER
5. Impacts of climate change on surface hydrology in the source region of the Yellow River
Sammanfattning : The source region of the Yellow River contributes about 35% of the total water yield in the Yellow River basin playing an important role for meeting the downstream water resources requirements. The declining water availability caused by climate change in the source region of the Yellow River is expected to have severe repercussions for the 110 million basin inhabitants in terms of water resources affecting agricultural productivity, municipal, and industrial water supply. LÄS MER