Essays about: "power dispersion"

Showing result 1 - 5 of 31 essays containing the words power dispersion.

  1. 1. Investigating the Fluxes of Radio-Cesium (137Cs) in Sweden : Investigating the Fluxes of Radio-Cesium (137Cs) in Sweden

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Hammad Masood; [2022]
    Keywords : Chernobyl incident; Sweden; radio-cesium; contamination; terrestrial environment; quatic environment;

    Abstract : Technological advancement and the quest for power have gradually contaminated our environment, as industrialization, agriculture, and nuclear activities progressed. In the year 1986, a terrible nuclear incident occurred in Ukraine, in which the nuclear reactor exploded. READ MORE

  3. 2. Measuring the Pulse Duration and the Time-Dependent Polarisation State of Ultrashort Laser Pulses with the D-Scan Technique

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

    Author : Daniel Díaz Rivas; [2022]
    Keywords : pulse characterisation; ultrashort; laser; femtosecond; dispersion scan; polarisation; wave plate; temporal reconstruction; electric field reconstruction; time-dependent polarisation; polarisation gate; Physics and Astronomy;

    Abstract : Ultrashort laser pulses with time-dependent polarisation states have many applications, such as the generation of isolated attosecond pulses and the study of the optical chirality of molecules. In this project the polarisation gate, built from two quarter-wave plates of different orders, is thoroughly characterised in experiment and simulation. READ MORE

  4. 3. Under the shade of rumour refutation : a critical analysis of #PoliceRefuteRumour campaign on Chinese social media

    University essay from Lunds universitet/Medie- och kommunikationsvetenskap; Lunds universitet/Institutionen för kommunikation och medier

    Author : Mingyi Fang; [2021]
    Keywords : Civic Culture; Antagonism and Hegemony; Myth; Rumour; Rumour refutation; Social Sciences;

    Abstract : Rumour refutation is a series of campaigns that the Chinese authorities invest in combating 'the overflow' of network rumours, especially since 2017. These campaigns reflect the Chinese's knowledge of rumour as false and harmful. READ MORE

  5. 4. 2D-material nanocomposites with nonlinear optical properties for laser protection

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

    Author : Nils Ross; [2021]
    Keywords : optical power limiting; OPL; laser protection; nanocomposites; 2D-materials; graphene oxide; MXene; Ti3C2; melting gel; graphene; two-dimensional materials; nonlinear optical properties; NLO; spectroscopy;

    Abstract : Lasers are increasingly used for a wide range of different applications for both civil and military purposes. Due to the distinct properties of laser light, use of lasers often comes with a risk of damage to the human eye and other optical sensors. Therefore, an effective laser protection is needed. READ MORE

  6. 5. High temperature tribological evaluation of a self-lubricating laser cladding with and without external solid lubricant

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

    Author : Cecilia Nemeth; [2020]
    Keywords : high temperature tribology; hot metal forming of aluminium; self-lubricating laser cladding; external solid lubricant;

    Abstract : The purpose of the project work was to build knowledge of the tribological behaviour of self-lubricating laser cladding, with and without external solid lubricant during conditions relevant for hot metal forming of aluminium. The materials used during the project were plates coated with a Ni-based self-lubricating clad and a reference sample of work tool steel. READ MORE