Search for dissertations about: "architecture carbon dioxide"

Found 5 swedish dissertations containing the words architecture carbon dioxide.

2. 1. Atomic Scale Modelling in Photoelectrocatalysis : Towards the Development of Efficient Materials for Solar Fuel Production

   Author : Giane B. Damas; Carlos Moyses Araujo; Rajeev Ahuja; Clas Persson; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Photocatalytic hydrogen production; polymeric materials; donor-acceptor architecture; small molecules; density functional theory; hydrogen binding free energies; exciton binding energies; electrocatalysis; carbon dioxide conversion; formic acid production; Sn-based electrodes; Tin oxides; Ru-complexes; Metal Organic Frameworks; carbon dioxide capture.;

   Abstract : Using sunlight to produce valuable chemicals has been pointed out as an interesting alternative to deal with the well-known environmental problem related to the use of fossil fuels for energy generation. Thus, it is crucial for this field the development of novel photocatalysts that could drive the uphill reactions with high efficiency while presenting low price and toxicity. READ MORE

4. 2. Design of renewable and functional polyamides and polyhydroxyurethanes with tunable structure-property relationships

   Author : Charalampos Pronoitis; Karin Odelius; Minna Hakkarainen; Stefan Naumann; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; polyamide; polyhydroxyurethane; polyester; ring-opening aminolysis; ring-opening polymerization; covalent adaptable network; copolymer; complex architecture; polyamid; polyhydroxyuretan; polyester; ringöppningsaminolys; ringöppningspolymerisation; dynamiska nätverk; sampolymer; komplex arkitektur; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Abstract : Redesigning polymeric materials and rethinking their use is imperative in the prospect of a more sustainable future. Critical aspects in this endeavor are the use of renewable monomers to decrease the environmental footprint, implementing green syntheses and production processes and the design for increased recyclability as an end-of-life option to diverge from the generation of plastic waste. READ MORE

5. 3. Controlling Charge and Energy Transfer Processes in Artificial Photosynthesis : From Picosecond to Millisecond Dynamics

   Author : Magnus Borgström; Leif Hammarström; Jan Davidsson; Sebastiano Campagna; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; Artificial photosynthesis; Electron transfer; Energy transfer; Ruthenium; Manganese; Charge-separated state; Donor-acceptor; Fysikalisk kemi; Physical chemistry; Fysikalisk kemi;

   Abstract : This thesis describes an interdisciplinary project, where the aim is to mimic the initial reactions in photosynthesis. In photosynthesis, the absorption of light is followed by the formation of charge-separated states. The energy stored in these charge-separated states is further used for the oxidation of water and reduction of carbon dioxide. READ MORE

6. 4. Optimisation of the Flow Process in Engine Bays - 3D Modelling of Cooling Airflow

   Author : Peter Gullberg; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cooling Airflow; UTM; Fans; CFD;

   Abstract : The focus of today’s automotive industry is to reduce emissionsand fuel consumption of all vehicles. Concentrating on the truckindustry, the last 20 years have focused largely on cutting emissionsof particulate matter and nitrogen oxides. For the future, attentionwill be on fuel consumption and emissions of carbon dioxide. READ MORE

7. 5. Towards High Efficiency Powertrains

   Author : Jayesh Khatri; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hybrid powertrain; water injection; Downsized spark-ignition engines; RON; efficient engine starts; knock mitigation; warm engine starts;

   Abstract : In recent years there has been a great shift whereby conventional vehicles powered by an internal combustion (IC) engine are being partially or completely replaced by electrified alternatives; almost all major automotive manufacturers have made statements indicating a shift towards electrification. This shift has been driven in large part by concerns about climate change, which have prompted lawmakers to introduce increasingly strict regulations limiting vehicular emissions, particularly of carbon dioxide (CO2). READ MORE