Essays about: "x-ray fluorescence"

Showing result 21 - 25 of 69 essays containing the words x-ray fluorescence.

1. 21. Odensjön - A new varved lake sediment record from southern Sweden

   University essay from Lunds universitet/Geologiska institutionen

   Author : Hanna Hertzman; [2021]
   Keywords : Varved lake sediment; late Holocene; organic sediments; diatoms; land-use history; southern Sweden; palaeolimnology; Earth and Environmental Sciences;

   Abstract : Annually laminated (varved) sediments provide opportunities to reconstruct climate change and human impact on the environment with high temporal resolution. Depending on the character of the varves, such sediments can provide insight into the delivery of both autochthonous and allochthonous material from the lake and its catch- ment and answer questions regarding both regional and local responses to climate- and land-use changes. READ MORE

3. 22. Changes in Gray cast iron over the last century-An initial study

   University essay from Lunds universitet/Industriell Produktion

   Author : Puneeth Kumar Shivarudrappa; [2021]
   Keywords : Gray cast iron; age strengthening; and machinability.; Technology and Engineering;

   Abstract : This thesis report summarizes the research on the cold aging of gray cast iron samples dating back 100 years, and how researchers looked at the phase history and amount of impurities and trace metals generated by recycling. Initially, the topic of the thesis is introduced, with an explanation and general information on gray cast iron. READ MORE

4. 23. Reconstructing Weathering and Climate Trends on Loess Deposits in NW France Using XRF Analysis

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Hanna Andersson; [2021]
   Keywords : geochemistry; loess; XRF; weathering; climate change; N-W France;

   Abstract : Analyzing climate changes by loess sediment deposits formed after the last glacial maximum gives us information about how the environment was dynamically before humans physically could record climate changes. Sampling and analyzing loess from different places in the world give us a more reliable view of when events and changes in climate took place. READ MORE

5. 24. NUDE (APRÈS LE BAIN): An Inter-Disciplinary Technical Study of an Oil Painting on Cardboard by Pierre Bonnard

   University essay from Göteborgs universitet/Institutionen för kulturvård

   Author : Victoria Skalleberg; [2020-08-05]
   Keywords : Bonnard; paper conservation; spectroscopy; material identification;

   Abstract : In this master thesis in paper conservation, an oil painting on cardboard (WL84, Gothenburg Museum of Art) by French artist Pierre Bonnard (1867-1947) is investigated. The painting shows signs of degradation in the form of staining, pigment loss, and discolored varnish. READ MORE

6. 25. Theoretical design of an XRF system for environmental measurements of Mercury in fiber banks

   University essay from Mittuniversitetet/Institutionen för elektronikkonstruktion

   Author : Runpeng Yu; [2020]
   Keywords : XRF detection system; MCNP modelling; Mercury; Fiber bank;

   Abstract : This thesis demonstrates the advantages of using the Energy-dispersive X-ray fluorescence (ED-XRF) system to quantify the mercury content in fiber banks at first. The Monte Carlo N-Particle (MCNP) code was then used to simulate the XRF system model with suitable parameters such as the input X-ray energy level, the detector material, and the environmental factor (water depth). READ MORE