Search for dissertations about: "PbS"

Showing result 1 - 5 of 50 swedish dissertations containing the word PbS.

2. 1. Photonic MEMS for optical information technologies

   Author : Carlos Errando-Herranz; Kristinn B. Gylfason; Wolfram Pernice; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Micro-electro-mechanical systems MEMS ; photonics; silicon photonics; photonic integrated circuits PIC ; lithium niobate photonics; ring resonator; polarization beam splitter PBS ; microfluidic integration; lab-on-chip LoC ; optical beam steering; nonlinear optics; Electrical Engineering; Elektro- och systemteknik; Fysik; Physics; Teknisk materialvetenskap; Materials Science and Engineering;

   Abstract : Photonic integrated circuits (PICs) combine hundreds of optical components on a chip, and can enable fast communications, high-performance computing, and improved sensing. PICs, made by miniaturized optical waveguides, require many reconfigurable elements to enable programmable functionalities and to compensate for fabrication variations and environmental factors. READ MORE

4. 2. Toward resilient product-based service supply chains

   Author : Gabriella Gatenholm; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; product-based services; service development; Supply Chain; service supply chain; sustainability; circular economy; risk; resilience;

   Abstract : Circular economies represent a step toward breaking the linear production model in supply chains. As drivers of enhanced circularity, product-based service (PBS) offerings extend and/or intensify the utilization period of products and thus decelerate the flow of resources. READ MORE

5. 3. A nuclear magnetic resonance study of dialkyldithiophosphate complexes : polycrystalline and surface adsorbed

   Author : Anna-Carin Larsson; Luleå tekniska universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemistry of Interfaces; Gränsytors kemi;

   Abstract : 31P, 13C and 207Pb NMR were used to characterize different metal (Ni, Zn, Pb) dialkyldithiophosphate complexes. Eight different sodium or potassium dialkyldithiophosphate salts (alkyl groups R=ethyl-, n-propyl, iso-propyl, n- butyl, iso-butyl, sec-butyl, iso-amyl and cyclo-hexyl) were used as starting materials. READ MORE

6. 4. Performance Assessment of Long Combination Vehicles using Naturalistic Driving Data

   Author : Abhijeet Behera; Sogol Kharrazi; Erik Frisk; Mats Jonasson; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : The deployment of long combination vehicles (LCVs) is currently in progress in Sweden. LCV refers to heavy vehicles that are longer than 25.25 m, which is the conventional length limit in Swedish regulations. LCVs reduce operational costs, improve fuel efficiency and reduce CO2 emission per ton-km. READ MORE

7. 5. Quantum Dot Solar Cells: Towards Environmentally Friendly Materials

   Author : Viktor A. Öberg; Erik Johansson; Muhammet S. Toprak; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Quantum dots; Nano-crystals; Energy conversion; Solar cells; Quantum dot solar cells; Low toxicity; Silver Sulfide; Silver Bismuth Sulfide; Lead Sulfide; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

   Abstract : To decrease the world’s energy dependence on fossil fuels, energy production and specifically electricity production needs to shift to more sustainable alternatives. One such alternative is solar cells as they directly convert energy emitted from the sun into electricity. READ MORE