Search results for "lek"
showing 10 items of 2808 documents
Kompression ja 2 ½-viikon korkeaintensiteettisen intervalli-harjoittelun vaikutukset naisjääkiekkoilijoiden hermo-lihasjärjestelmään
2015
Kinnunen, Juho-Ville 2015. Kompression ja 2½-viikon korkeaintensiteettisen intervalli harjoittelun vaikutukset naisjääkiekkoilijoiden hermo-lihasjärjestelmään. Liikuntabiologian laitos, Jyväskylän yliopisto. Biomekaniikan Pro gradu -tutkielma 64 s. Korkeaintensiteettinen intervalli-harjoittelu (HIIT) on yleinen harjoittelumuoto, jolla voidaan saada aikaan vasteita aineenvaihdunnallisesti sekä hermo-lihasjärjestelmässä. Harjoittelumuotoa voidaan hyödyntää muun harjoittelun lisänä ja siten saada aikaiseksi vasteita lyhyemmillä harjoitteluajoilla, kuin perinteisessä harjoitteissa. Kompressiolla on puolestaan todettu olevan vaikutuksia perättäisten räjähtävien suoritusten keskitehon kasvussa ja…
Which direction should I go? A quest for understanding the effect of TMS stimulus orientation on evoked responses
2023
The orientation of the electric field (E-field) induced by transcranial magnetic stimulation (TMS) plays a significant role in determining the magnitude of motor evoked potentials (MEP) and TMS-evoked potentials (TEP). However, fundamental mechanisms explaining the interaction of the induced E-field and the underlying neuronal populations are still largely unknown. We recently entered a quest to understand and describe neurophysiological and physical factors affecting the effect of the E-field orientation on the MEP and TEP. We developed a dual-coil TMS transducer capable of fast and accurate electronic control of the induced E-field orientation. With this transducer, we could scan the effe…
Koko kehoon kohdistuvan pitkäaikaisen tärinän vaikutukset hermolihasjärjestelmään
2008
Funktio-EMG-arvojen yhteys alaselkäongelmiin maastohiihtäjillä
2005
Hirālas Luisa bāzes katalizēta enantiobagātinātu ciānhidrīnu sintēze
2022
Hirālas Luisa bāzes katalizēta enantiobagātinātu ciānhidrīnu sintēze. Feldmanis A. R., zinātniskais vadītājs Dr. Chem. Kinēns A. Bakalaura darbs, 50 lappuse, 35 attēli, 2 tabulas, 32 literatūras avoti, 5 pielikumi. Latviešu valodā. Ciānhidrīni ir vērtīgi būvbloki organisko vielu sintēzē, bet tos visbiežāk iegūst izmantojot metālu kompleksus saturošus katalizatorus. Bakalaura darba ietvaros izstrādāta metode enantiobagātinātu ciānhidrīnu sintēzei, kurā kā katalizatoru izmanto hirālas Luisa bāzes. Darbā tika veikta Luisa bāzi saturošu katalizatoru klāsta pārbaude, reakcijas apstākļu piemeklēšana un mehānisma pētījumi. Bakalaura darbā tika noskaidrots, ka ciānhidrīnus ir iespējams iegūt, izman…
Smart Electric Vehicle Charging System : Controlling Multiple Electrical Vehicle Chargers using OCPP to Limit Electricity Demand
2017
Master's thesis Renewable Energy ENE500 - University of Agder 2017 Peak demand is a problem when Electrical Vehicle charging is introduced in the electricity grid. Local limitations like fuses and transformer capacity can rapidly be overloaded if multiple Electrical Vehicles are charging at the same time. This can be solved by shifting these loads in time. This master’s Thesis presents a solution by using the communication protocol OCPP to restrict one or more chargers below a set demand limit. The solution is developed in cooperation with Sharebox [1] and Grønn Kontakt [2], and is in prototype phase at the end of this Master’s Thesis. Testing demonstrates that the prototype can reduce the …
Optimization of Charging Stations on a Route with Electric Buses
2019
Master's thesis Renewable Energy ENE500 - University of Agder 2019 This studyconsiders placement of electric charging stations for a public electric bus system with the intention of minimizing the charging power. This is an optimization problem where fully electric buses with opportunity charging strategy are considered.The developed strategies are proposed for an existing bus route in Oslo city, Norway. Batteryand chargingspecifications were determinedbased on a literature review. Measurements regarding velocity of the bus and altitude of the route were performed. This data where further used to determine the energy needsfor an electric bus. Four cases were formedregarding different batter…
Design and verification of a solar powered automatic rooftop hydroponic system with real time individual measuring of potassium and calcium
2019
Master's thesis Renewable Energy ENE500 - University of Agder 2019 This report covers development and implementation of two hydroponic systems. One at a lab inside theUniversity of Agder, and one at the roof on the J-Building at the University. This report tries to answer thefollowing main research question: How can an automated system for control of nutrient concentration andpH in a solar powered hydroponic system be developed, implemented and verified?The focus of the report has been to create a fully functional system for the lab, generating data forelectronic conductivity for measuring a specter of nutrients, pH value, individual nutrients and temperaturefor comparison. The work has bee…
Sensorless Control of Induction Motors Using an Extended Kalman Filter and Linear Quadratic Tracking
2017
Master's thesis Renewable Energy ENE500 - University of Agder 2017 Conventional sensorless controls for induction motors require two PID regulators and precise gain turning. This thesis presents a sensorless control for induction motors using an extended Kalman filter (EKF) and linear quadratic tracking (LQT). The proposed method requires only a single controller and no physical velocity sensor
Waste heat utilization for central heating and ventilation systems at Chassix Norway
2018
Master's thesis Renewable Energy ENE500 - University of Agder 2018 Chassix from south of Norway attempt to reduce their energy demand by sending waste heat to a Central Heating System, (CHS), named Case 1. The CHS heat the ventilation systems, space heat and water heating. The waste heat used is from the Sand Recycling Process, (SRP), and the Aluminum Cooling Process, (ACP). The ACP and a 600kW cooling tower are installed in May/June. Since the CHS is close to the ventilation systems using Battery Heat Exchanger, BHE, a possibility for utilizing the ventilation systems as a cooling tower, named Case 2. Case 2 is an attempt to reduce investment cost by replacing investment cost for installin…