Essays about: "lowered temperature"

Showing result 16 - 20 of 64 essays containing the words lowered temperature.

  1. 16. "Resonance frequency, Q-factor, coupling of a cylindrical cavity and the effect on graphite from an alternating electric field".

    University essay from Uppsala universitet/Fasta tillståndets elektronik

    Author : Jakob Gölén; Simon Persson; [2021]
    Keywords : Q-factor; Resonance frequency; Cavity; Microwaves; Heating; Q-faktor; Resonansfrekvens; Kavitet; Mikrovågor; Uppvärmning;

    Abstract : The purpose of this project was to investigate a cylindrical cavity resonator and use microwaves to heat up a material in the cavity. This was done by measuring the Q-factor and the resonance frequency of the cavity, both with and without material inside. READ MORE

  3. 17. Comparison of Different Wood Types for Use as a Porous Substrate in Denitrifying Woodchip Bioreactors

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Erica Erikson; [2021]
    Keywords : denitrification; woodchip bioreactor; column experiments; denitrifikation; träflis-bioreaktor; kolonnexperiment;

    Abstract : Explosives used in the mining industry release nitrate into the environment, causing concerns for the water quality in local river-systems. One way of reducing the nitrate loading into the environment is through a woodchip bioreactor. READ MORE

  4. 18. Thermal Properties of a 5G Telecom Equipment Casing Design for Noise Suppression

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Per Rundström; [2021]
    Keywords : Acoustics; Casing; Shroud; Telecom; Thermal; Akustik; Hölje; Strömningsmekanik; Telecom; Värmeöverföring;

    Abstract : Around the world the implementation of the 5G mobile network is under way. With this latest generation of mobile data transfer comes many advantages compared to the previous generations. One tradeoff however is the reduced range of the transmitting radios due to the higher frequencies of the signal. READ MORE

  5. 19. The influence of particle size distribution on bio-coal gasification rate as related to packed beds of particles

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Markus Bäckebo; [2020]
    Keywords : Bio-coal; Particle size distributions; Reaction rate; Gasification;

    Abstract : This thesis is a part of a collaboration between Höganäs AB and Luleå University of Technology, aiming at replacing fossil process coal with bio-coal in their sponge iron process. The difference in gasification reactivity, i.e. READ MORE

  6. 20. Burning material behaviour in hypoxic environments: An experimental study examining fire dynamics of composite materials in vitiated conditions

    University essay from Lunds universitet/Avdelningen för Brandteknik

    Author : Robert Bray; [2020]
    Keywords : ORS; Fire engineering; hypoxic; polymers; Technology and Engineering;

    Abstract : The progression of fire safety research has contributed to improving the guiding principles of standardised building design. Research making use of pure materials, once common in homes and workplaces, are less relevant as such materials are no longer as prevalent. READ MORE