Sökning: "FYSIK"

Visar resultat 1 - 5 av 3430 uppsatser innehållade ordet FYSIK.

  1. 1. Detection of gunshot residue and explosives using hybrid graphene/quantum dot based sensors

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Elsa de Geer; [2017]
    Nyckelord :quantum dots; Graphene; explosives; gunshot residue; fluorescence; quenching; Technology and Engineering;

    Sammanfattning : This master thesis investigates the use of chemically exfoliated graphene,CdSe/CdS/ZnS quantum dots and graphene quantum dots for fluorescencebased detection of gunshot residue and explosives. Specifically, nitroglycerineis chosen as the target substance in gunshot residue and the nitroaromaticcompounds trinitrotoluene and dinitrotoluene are chosen as target explosives. LÄS MER

  2. 2. Meshnetwork of wireless IoT sensors

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Alexander Olsson; [2016]
    Nyckelord :BLE; Bluetooth low energy; meshnetwork; Internet of things;

    Sammanfattning : The Internet of things is a scenario where devices such as lighting, household appliances, sensors etc. are connected and communicate with each other via Internet. This puts a demand for a good infrastructure around these devices. LÄS MER

  3. 3. Pendelarm Hägglunds Forest Truck. : Analys av lastfall och hjullager samt konstruktion och beräkning av pendelarm till Hägglunds Forest Truck.

    Uppsats för yrkesexamina på grundnivå, Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Författare :Fredrik Limegård; [2016]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  4. 4. A mean-field approach to attractive few-body Fermi gas

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Matematisk fysik (N)

    Författare :Morten Piibeleht; [2016]
    Nyckelord :hartree-fock-bogoliubov; HFB; fermi gas; higgs mode; QRPA; quasiparticles; random phase approximation; Physics and Astronomy;

    Sammanfattning : Quantum many-body systems can be studied theoretically from first principles using microscopic models, but the computational cost of numerically exact calculations increases exponentially with the number of particles and the complexity of the interaction, limiting the systems that can be analysed. The Hartree-Fock-Bogoliubov (HFB) and quasiparticle random phase approximation (QRPA) methods, heavily used in nuclear physics, rely on mean-field approximations but scale more favourably with increasing system size and complexity. LÄS MER

  5. 5. Numerical Modeling of Plain Journal Bearings within a Heavy-Duty Engine Oil System using GT-SUITE

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Fredrik Kälvelid; [2016]
    Nyckelord :;

    Sammanfattning : Main and connecting rod bearings along the crankshaft in a heavy-duty engine oil system requires efficient feed of oil flow to ensure the performance of lubrication, cooling and cleaning. The bearings and builded bearing models considered in this work are based on a Volvo 13L engine. LÄS MER

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