Advanced search

Showing result 1 - 5 of 50 essays matching the above criteria.

  1. 1. Implementation of Dyson equation to accelerate convergence in RS-LMTO-ASA code

    University essay from Uppsala universitet/Materialteori

    Author : Elis Uebel; Viktor Frilén; [2024]
    Keywords : Density functional theory; Dyson equation;

    Abstract : First-principle calculations is a key ingredient for us to understand, improve and design new materials. Density functional theory (DFT) [1] has proven to be a very powerful tool and a number of different versions exist depending on the problem at hand. READ MORE

  3. 2. Redeveloping a mixing system in a biomedical device to improve system control and increase its intelligence and effectiveness : Redeveloping a mixing mechanism using ESP32, TMC5130, Bluetooth and CAN-bus

    University essay from Mälardalens universitet/Akademin för innovation, design och teknik

    Author : Aref Bahtiti; [2023]
    Keywords : CAN-bus; Bluetooth classic; Stepper motor; TMC5130; ESP32; Open loop system; Smartphone application;

    Abstract : Biogas is a renewable energy source produced by decomposing organic matter in the absence of oxygen. Without oxygen, organic matter is broken down in this process, producing a mixture of gases that may be used for a variety of tasks, such as heating, cooking, and producing power. READ MORE

  4. 3. Quantum state tomography of attosecond electron wavepackets

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Ron Demjaha; [2022]
    Keywords : quantum physics; quantum state tomography; atomic physics; quantum optics; density matrix; entanglement; state mixing; fano resonances; two-photon absorption; Physics and Astronomy;

    Abstract : In this master thesis, a broad theoretical description is done of a novel quantum state tomography protocol called KRAKEN. This protocol is meant for the determination of the density matrix of an electronic state created by absorption of XUV radiation in the vicinity of a Fano resonance. At first, a description of the KRAKEN protocol is provided. READ MORE

  5. 4. Moment-resisting connections for glulam using birch plywood : An experimental study on both mechanical and adhesive connections

    University essay from KTH/Byggnadsmaterial

    Author : Jonatan Ringaby; [2022]
    Keywords : ;

    Abstract : The aim of this study was to investigate the load-bearing capacity and stiffness of mechanical and adhesively bonded connections in timber structures with gusset plates made of birch plywood, as a preliminary study for potential future use in long-span timber structures which could reduce the environmental impact of the building sector by substituting steel with wood products in moment-resisting connections. Birch plywood was chosen for this study due to its high bending strength in comparison to plywood made of softwoods and its availability on the market. READ MORE

  6. 5. Fluid flow features in swirl injectors for ethanol fueled rocket : - Analysis using computational fluid dynamics

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Emil Vejlens; Dylan De Jourday; [2022]
    Keywords : Fluid Mechanics; Rocket Science; Fuel injectors; Computational Fluid Dynamics; Swirling Flows; Fuel Mixing;

    Abstract : A swirl injector for a rocket engine being developed by \emph{AESIR} (Association of EngineeringStudents in Rocketry) was simulated with different geometric parameters. The swirl injector is usedto atomize the ethanol used as fuel and to create a spray that mixes well with the oxidizer withinthe combustion chamber. READ MORE