Search for dissertations about: "Costa"

Showing result 1 - 5 of 66 swedish dissertations containing the word Costa.

2. 1. Diversifying crop rotations for sustainable production and climate change adaptation

   Author : Alessio Costa; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

   Abstract : Industrial cropping systems are increasingly simplified, with fewer crops being grown, requiring extensive use of inputs, and contributing to environmental pollution and climate change. Solutions are needed to reduce the negative effects, while retaining productivity in the face of increasingly frequent detrimental climatic conditions. READ MORE

4. 2. Cellulose Dissolution and Amphiphilicity : Insights on the Emulsion Formation and Stabilization

   Author : Carolina Costa; Magnus Norgren; Håkan Edlund; Orlando Rojas; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : An amphiphilic polymer is expected to adsorb at the oil-water interface and be capable of stabilizing emulsions. Cellulose derivatives, cellulose nanoparticles and regenerated cellulose particles show an intrinsic amphiphilic character by self-assembling at oil-water interfaces and stabilizing emulsions without the aid of surfactants or any other co-stabilizers. READ MORE

5. 3. PAK4 signaling in development and cancer

   Author : Tânia Costa; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Our understanding of cancer biology has been evolving rapidly shaped by groundbreaking discoveries. We now understand that cancer is not one disease but many, and that tumors are not foreign objects in the human body but rather the result of changes in the previously normal tissues and organs. READ MORE

6. 4. Infrared - X-ray pump probe spectroscopy

   Author : Viviane Costa Felicissimo; Faris Gelmukhanov; KTH; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Biokemi; Biochemistry; Biokemi;

   Abstract : The present thesis concerns theoretical studies of molecular interactions investigated by infrared and X-ray spectroscopic techniques, with emphasis on using the two technologies combined in pump probe experiments. Three main types of studies are addressed: the use of near-edge X-ray absorption fine structure spectra (NEXAFS) to manifest through-bond and through-space interactions; the role of hydrogen bonding on the formation of X-ray photoelectron spectra as evidenced by simulations of the water dimer; and the development of theory, with sample applications, for infrared X-ray pump probe spectroscopy - the main theme of the thesis. READ MORE

7. 5. Principles of Infrared - X-ray Pump-probe Spectroscopy

   Author : Viviane Costa Felicissimo; Faris Gelmukha; Maria Marian Christel; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bioengineering; Bioteknik;

   Abstract : The present thesis concerns theoretical studies of molecular interactions investigated by infrared and X-ray spectroscopic techniques, with emphasis on using these two techniques combined in pump-probe experiments. Four main types of studies are addressed: the use of near-edge X-ray absorption fine structure spectra (NEXAFS) to manifest through-bond and through-space interactions; the role of hydrogen bonding in the formation of X-ray photoelectron spectra as evidenced by simulations of the water dimer; the development of theory, with sample applications, for infrared X-ray pump-probe spectroscopy; and molecular dynamics simulations of light-induced fragmentation of water clusters. READ MORE