Sökning: "paper chemistry"

Visar resultat 21 - 25 av 58 uppsatser innehållade orden paper chemistry.

1. 21. Radial migration of stars, measured in N-body simulations

   Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

   Författare :Daniel Mikkola; [2017]
   Nyckelord :N-body; simulations; galaxies; radial migration; stars; Physics and Astronomy;

   Sammanfattning : The purpose of Galactic archaeology is determining the history of the Milky Way (MW) Galaxy. To do this one uses observational data from stellar populations in terms of properties such as kinematics, chemistry, ages, and evolution. LÄS MER

3. 22. Hydrogen Assisted Lignin Depolymerization with Pulp Mill Catalysts

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Linnéa Kollberg; [2017]
   Nyckelord :Lignin; depolymerization; pulp mill catalysts; hydrogenolysis; base catalyzed depolymerization; Chemistry;

   Sammanfattning : As part of the development of a process for production of a lignin-rich oil that can serve as a renewable feedstock to existing petroleum refineries, hydrogen assisted depolymerization of lignin in filtered black liquor has been investigated. This process offers the possibility to reduce fossil emissions from transportation by utilization of the largest renewable carbon resource in Sweden, namely the forest. LÄS MER

4. 23. The Performance of Bio-produced PE and PET in Flexible Packaging Materials : a Benchmarking Evaluation

   Master-uppsats, Lunds universitet/Centrum för analys och syntes

   Författare :Amanda Persson; [2016]
   Nyckelord :bio-produced; biopolymer; polymers; Materials; plastics; bio-feedstock; polymerteknologi; polymer technology; Chemistry;

   Sammanfattning : The packaging market is starting to demand renewable materials to face out the fossil based materials mainly used today. This thesis investigate the possibility and advance to switch from conventional grades of polyethylene (PE) and polyethylene terephthalates (PET) towards bio-produced qualities of the same polymers. LÄS MER

5. 24. Polyphosphate : the impact of polyphosphate on growth and nutrient uptake of Pelargonium x hortorum 'Mårbacka' and Petunia x hybrida 'Origami Watermelon'

   Master-uppsats, SLU/Dept. of Plant Breeding (from 130101)

   Författare :Rebecka Kullberg; [2016]
   Nyckelord :hydrolysis; orthophosphate; Pelargonium; Petunia; phosphate; plant nutrition; polyphosphate; root growth; soil chemistry;

   Sammanfattning : Phosphorus (P) is an essential macronutrient for plants. For example, it is required for the transfer of energy, in the photosynthesis and as a component of the phospholipids in the cell membrane. Phosphorus can exist in several different forms, depending on the soil's pH-value. LÄS MER

7. 25. Co-combustion of Industrial Biosludge and other Residual Streams in a Bubbling Fluidized Bed : Focusing on reduction of operating and technical problems by analyzing the ash transformation chemistry

   Uppsats för yrkesexamina på grundnivå, Umeå universitet/Institutionen för tillämpad fysik och elektronik

   Författare :Christian Öberg; [2016]
   Nyckelord :Co-combustion; biosludge; fluidized bed reactor; corrosion; nutrient recovery;

   Sammanfattning : Today the use of resources in the industry are not complete to be considered as sustainable from the perspective of nutrient recovery. In the Swedish pulp and paper industry residual streams such as bark, fiber reject and sludge are returned for more sustainable use more frequently. LÄS MER