Essays about: "REM addition"

Found 4 essays containing the words REM addition.

  1. 1. Optimization of Rare Earth Metals (REM) addition in high temperature stainless steel grade 253MA.

    University essay from KTH/Materialvetenskap

    Author : Bharath Vasudev Rangavittal; [2019]
    Keywords : REM addition; non-metallic inclusion; oxidation; austenitic; optimization;

    Abstract : The focus of this thesis work is to optimize rare earth metal (REM) addition in Therma 253MA, an austenitic stainless-steel grade in order to get a good trade-off between oxidation resistance property and the amount of big REM inclusions formed. Big REM inclusions are detrimental to material properties and REM is required to be dissolved in the matrix for improving the oxidation resistance. READ MORE

  3. 2. Comparison of three different indirect methods to evaluate ungulate population densities

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Sabine Pfeffer; [2016]
    Keywords : wildlife ecology; density estimates; camera trapping - random encounter model; dung pellet group counts;

    Abstract : Reliable species population estimates are important for population conservation and management. Information about population sizes is needed to introduce certain preservation and regulation approaches. Several different methods, both performed in the field and analytical, can be used to estimate species densities. READ MORE

  4. 3. Developing an sleep scorer by using Biosignals in Matlab. : Evaluation for sleep apnea patients.

    University essay from KTH/Skolan för teknik och hälsa (STH)

    Author : Igor Alfredo Arroyo Porras; [2015]
    Keywords : Biosignals; Sleep apnea; Sleep medicine; Matlab; SHHS; AASM; polysomnography;

    Abstract : Nowadays, sleep disorders e.g. sleep apnea —the cessation of airflow at the nose and mouth lasting at least 10 second— are a broadly problem around the world. Direct and indirect costs associated to sleep problems are outsize and the quality of patient life is deteriorated because of it. READ MORE

  5. 4. Evaluation of Ce Addition by Different Wire inLiquid 316 Stainless Steel

    University essay from KTH/Materialvetenskap

    Author : Oscar Juneblad Målar; [2015]
    Keywords : Stainless steel; Continuous Casting; Mold Metallurgy; REM-­‐clusters; Electrolytic Extraction;

    Abstract : It is well known that REMs are strong oxide and sulphide formers that can easily form large clusters which have harmful effect on the casting process as well as the quality of the final steel product. By adding these elements right before casting, the number of narrow transfer parts are eliminated (compared to if added in ladle) Also, the REM inclusions has less time to sinter together to form large clusters, preventing clogging. READ MORE