Sökning: "optical storage"

Visar resultat 11 - 15 av 98 avhandlingar innehållade orden optical storage.

1. 11. Structural, Electronic and Mechanical Properties of Advanced Functional Materials

   Författare :Muhammad Ramzan; Rajeev Ahuja; S. K. Saxena; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; DFT; Hydrogen storage; Rechargeable batteries; Amorphization; Electronic structure; Crystal strcuture; Molecular dynamics; Diffusion; Intercalation voltage; High pressure; MAX phases; Mechanical properties; Optical properties; Phase change memory; Spintronics; Magnetism; Correlation effects; Band structure; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

   Sammanfattning : The search for alternate and renewable energy resources as well as the efficient use of energy and development of such systems that can help to save the energy consumption is needed because of exponential growth in world population, limited conventional fossil fuel resources, and to meet the increasing demand of clean and environment friendly substitutes. Hydrogen being the simplest, most abundant and clean energy carrier has the potential to fulfill some of these requirements provided the development of efficient, safe and durable systems for its production, storage and usage. LÄS MER

3. 12. Nonlinear Absorbing platinum(II) Acetylides for Optical Power Limiting Applications

   Författare :Robert Westlund; Eva Malmström; Sergei Vinogradov; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; optical power limiting; Polymer chemistry; Polymerkemi;

   Sammanfattning : During the past few decades, laser technology has had a strong impact on our society, providing important contributions to materials processing, data storage, communications, medicine, and defense applications. However, the progress in laser technology has also brought about the development of harmful portable high‐power lasers and tactical laser weapons. LÄS MER

4. 13. Materials Modelling for Energy Harvesting : From Conversion to Application through Storage

   Författare :Amitava Banerjee; Rajeev Ahuja; Gunnar Niklasson; Sudip Chakraborty; Tejs Vegge; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Materials Modelling; DFT; Energy Materials; Photocatalysis; HER and OER; Hybrid Perovskite Solar Cells; Stability; Thermodynamics and Kinetics in Na-ion battery; Organic Crystal Battery;

   Sammanfattning : In this Ph.D. thesis, ab initio density functional theory along with molecular dynamics and global optimization methods are used to unveil and understand the structures and properties of energy relevant materials. In this connection, the following applications are considered: i. LÄS MER

5. 14. Storage of Hydrogen Peroxide Bleached Mechanical Pulp : Reduction in Reflectance over the Visible Spectrum

   Författare :Sofia Enberg; Per Engstrand; Magnus Paulsson; Mats Rundlöf; Patrik Axelsson; Øyvind Eriksen; Yonghao Ni; Mittuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : The objective of this thesis is to determine possible causes of the darkening of hydrogen peroxide bleached mechanical pulp over the visible spectrum and their relative contributions. It focuses on both process conditions and the composition of the pulp and the dilution water, including additions or losses of material along the process line from the bleach tower to the paper machine. LÄS MER

7. 15. Optical projection tomography based 3D-spatial and quantitative assessments of the diabetic pancreas

   Författare :Tomas Alanentalo; Ulf Ahlgren; Raphael Scharfmann; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nkx; development; optical projection tomography; 3D visualisation; pancreas; beta-cell mass; insulitis; diabetes; Cell and molecular biology; Cell- och molekylärbiologi;

   Sammanfattning : The gastrointestinal tract comprises a number of digestive organs including the stomach and pancreas. The stomach is involved in the digestion and short term storage of food while the pancreas is a mixed endocrine and exocrine gland which provides the body with hormones and enzymes essential for nutritional utilisation. LÄS MER