Essays about: "aluminium"

Showing result 21 - 25 of 373 essays containing the word aluminium.

1. 21. Mercury accumulation in lake sediments on different time scales – the influence of algal primary production

   University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

   Author : Anne Rebotzke; [2023]
   Keywords : mercury; lake sediment; primary productivity; algal scavenging; biogenic silica; diatom proxy; chlorophyll-a; organic matter;

   Abstract : The aim of this work is to test the proposed approach of algal scavenging as a driver of sediment mercury (Hg) on different time scales and to gain a better understanding of the mechanisms of Hg accumulation in lake sediments. A 3000-year sediment record from Nylandssjön in northern Sweden was analysed for this purpose, as well as a 20-year sediment record from the seasonal sediment traps of this lake. READ MORE

3. 22. Aluminum levels in the O-horizon of soils near Sundsvall, Sweden : Are levels of Al elevated due to smelter emission?

   University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

   Author : Mattias Sundin; [2023]
   Keywords : Aluminium; Smelter emissions; O-horizon; Al concentration; Scots’ pine needles;

   Abstract : Aluminum (Al) is a potentially toxic element for humans, animals, and plants. Al emitted from smelter plants is one source of Al that may be responsible for increased exposure to humans and the environment. READ MORE

4. 23. Resistance Element Welding of Ultra High Strength Steel to Aluminium

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Malte Eriksson; [2023]
   Keywords : ;

   Abstract : The automotive industry strives towards decreased vehicle weight in order to decrease green house gas emissions. To create lighter vehicles, new lighter materials need to be implemented. One issue with new materials is that the traditional joining methods in many cases meet their limitations. READ MORE

5. 24. Evaluation of Numerically Developed Models of an ECB for Estimating the Braking Torque on the SkiCrosser

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Filip Andersson; William Marin; [2023]
   Keywords : ;

   Abstract : Cross-country skiing is a popular method of exercising that builds strength, stamina and engages the entire body. As cross-country skiing requires snow to be present, it is typically only performed during the winter, resulting in a rather limited way of exercising. READ MORE

6. 25. Recycling end-of-life silicon PV panel with molten salt bath

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Liying Yu; [2023]
   Keywords : ;

   Abstract : Solar energy is recognized as a clean way to produce electricity. Solar PV's installed capacity is increasing in recent years. However, a PV panel has a 25-year lifespan on average. In actuality, 95% of the mass of PV components can be recycled. READ MORE