Essays about: "Mg Ca"

Showing result 21 - 25 of 92 essays containing the words Mg Ca.

  1. 21. The Eemian Baltic Sea hydrography and paleoenvironment based on foraminiferal geochemistry

    University essay from Lunds universitet/Geologiska institutionen

    Author : Julia Chonewicz; [2020]
    Keywords : trace elements; benthic foraminifera; last interglacial; temperature reconstruction; geochemistry; Earth and Environmental Sciences;

    Abstract : I den här masteruppsatsen undersöktes geokemin i kalkskalen av bottenlevande foraminiferer från Anholt (Kattegat), Ristinge (Bälthavet) och Obrzynowo (Egentliga Östersjön), för att rekonstruera de hydrografiska förhållanden i Östersjön och paleomiljön under den senaste interglacialen (130 - 115 ka BP). De variabler som analyserades innefattade Mg/Ca, Ba/Ca och Mn/Ca samt stabila syre- och kolisotoper (δ18O och δ13C) i kombination med data från tidigare studier och modern hydrografi. READ MORE

  3. 22. Characterization of mineral parageneses and metamorphic textures in eclogite- to high-pressure granulite-facies marble at Allmenningen, Roan, western Norway

    University essay from Lunds universitet/Geologiska institutionen

    Author : Stylianos Karastergios; [2020]
    Keywords : Western Gneiss Region; Vestranden; Roan; Caledonides; marble; calc-silicate; metabasic; petrography; SEM-EDS; mineral chemistry; mineral equilibrium; P–T estimate; devolatilization; Earth and Environmental Sciences;

    Abstract : The Roan peninsula in western Norway, Vestranden, is known for exposing one of the deepest parts of the Scandinavian Caledonian orogen, similar to the Western Gneiss Region. Throughout the Roan area, eclogites and high-pressure granulite- and amphibolite-facies gneisses occur, associated with supracrustal rocks including marbles, calc-silicate rocks and amphibolites. READ MORE

  4. 23. Comparison and optimization of removal of natural organic carbon from raw water with ultrafiltration in pilot scale experiments

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Tamara Kristin Voigtländer; [2020]
    Keywords : Dissolved Organic Carbon; raw water quality; online coagulation; high-frequency sonde; drinking water treatment;

    Abstract : The removal of natural organic matter (NOM) from Swedish surface waters has become a large challenge for drinking water treatment plants (DWTP), as NOM content has been rising in surface waters all over Northern Europe. In the last decade, membrane technologies, often combined with coagulation, have become more and more common. READ MORE

  5. 24. Photodegradation of macroplastics to microplastics : A laboratory study on common litter found in urban areas

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Jonathan Svedin; [2020]
    Keywords : ;

    Abstract : During the last 60 years the plastic production has increased more than 190 times and plasticpollution both at sea and land is a growing issue. Every year millions of tons of plastic waste fromland reaches the oceans, but the land-based sources are diffuse. READ MORE

  6. 25. Sequestration of carbon dioxide in steel slag

    University essay from KTH/Materialvetenskap

    Author : Sushanth Kombathula; [2020]
    Keywords : Carbon dioxide; Steel slag; Carbonation; Koldioxid; Stålslagg; Karbonering;

    Abstract : Although Iron and steel industry is essential for the development of society, the industry is responsible for a large portion of CO2 emissions. The industry also produces by-products like metallurgical slag in orders of million tons. The slag is alkaline in nature and rich in Ca and Mg oxides. READ MORE