Sökning: "Electrical-conductivity"

Visar resultat 1 - 5 av 61 uppsatser innehållade ordet Electrical-conductivity.

1. 1. Dynamics of streamflow and stream chemistry in a Swiss pre-Alpine headwater catchment : A fine scale investigation of flow occurrence and electrical conductivity in the temporary streams in the lower Studibach catchment

   Master-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära; Uppsala universitet/Luft-, vatten- och landskapslära

   Författare :Elise Baumann; Hanna Berglund; [2021]
   Nyckelord :Temporary Streams; Pre-Alpine Catchment; Streamflow; Stream Chemistry; Fine Scale Investigation; Electrical-conductivity; Stream Mapping; Temporära bäckar; Pre-Alpina avrinningsområden; Bäckflöden; Vattenkemi; Finskalig undersökning; Elektrisk konduktivitet; Bäck-kartering;

   Sammanfattning : Temporary streams and their dynamics have often been largely overseen in hydrological research and there is relatively little knowledge about how the occurrence of flow in these streams varies temporally and spatially. Temporary streams are important from a hydro- logical perspective because they affect water quantity and quality in downstream peren- nial reaches, and from an ecological perspective because they provide habitat to unique species. LÄS MER

3. 2. Treatment of a Liquid Al-Si Alloy : Quality Control and Comparison of Two Melt Degassing Processes

   Magister-uppsats, Jönköping University/JTH, Material och tillverkning

   Författare :Badreddin Radwan; [2020]
   Nyckelord :Dissolved Hydrogen; Degassing; Porosity; Grain Refinement; Eutectic Modification; Fluidity; Metallography; Thermal Analysis.;

   Sammanfattning : Products manufactured by aluminium casting have become very popular and already replaced many parts that were once produced by iron and steel casting. This trends upwards especially in the automotive industry as it has become extremely important to reduce vehicle weight due to environmental requirements and economical aspects. LÄS MER

4. 3. Sensorelektronik för hydroponisk odling

   Kandidat-uppsats, Linköpings universitet/Elektroniska Kretsar och System; Linköpings universitet/Elektroniska Kretsar och System

   Författare :Viktor Lidholm; Pelle Lund; [2020]
   Nyckelord :Hydroponics; Sensorelektronik; hydroponik; hydroponisk odling; elektronik;

   Sammanfattning : Projektet gick ut på att skapa ett system för att automatisera en hydroponisk odling, ta fram vilka storheter som är intressanta att mäta och sedan skapa elektronik för det. Det var snabbt tydligt att det är elektrisk konduktivitet (EC), pH och temperatur som är intressant att mäta. LÄS MER

5. 4. Fabrication and Evaluation of Sb2Te3/PVDF Hybrid Thermoelectric Films

   Master-uppsats, KTH/Tillämpad fysik

   Författare :Bo Yu; [2020]
   Nyckelord :;

   Sammanfattning : Thermoelectric (TE) materials and devices have been extensively studied for harvesting waste heat energy. There is more interest to fabricate TE materials and devices at low cost and highly-efficient ways. LÄS MER

7. 5. Vattenkommunikation, spårbart dricksvatten och aktörer i branschen

   Kandidat-uppsats, Lunds universitet/Miljövetenskaplig utbildning

   Författare :Ellen Rikte; [2020]
   Nyckelord :traceability; drinking water; source to tap; water plant; aquifer; water quality analysis; Earth and Environmental Sciences;

   Sammanfattning : Due to climate change, chemical use and physical impact on natural waters, the vulnerability and load of drinking water distribution systems is likely to increase. Therefore traceable drinking water regarding origin and quality analysis through a QR code by the taps in people’s homes, might become necessary. LÄS MER