Sökning: "benzene"

Visar resultat 21 - 25 av 107 avhandlingar innehållade ordet benzene.

1. 21. Bound by long-range interactions: Molecular crystals and benzene on Cu(111)

   Författare :Kristian Berland; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; DFT; diffusion barriers; sparse matter; platonic hydrocarbons; molecular crystals; van der Waals density functional vdW-DF ; van der Waals forces; London-dispersion forces; self-assembly; hexamine; molecular overlayers; electronic structure; Friedel oscillations; soft matter; surface-mediated interactions; physiosorption;

   Sammanfattning : This thesis investigates molecular systems bound by long-range interactions. Westudy molecular crystals held together by van der Waals forces and the physisorption of benzene (Bz) on Cu(111). LÄS MER

3. 22. Chromosome aberrations and environmental exposures in acute leukemia

   Författare :Ragnhild Rosengren Lindquist; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Acute leukemia; chromosome 3; chromosome 8; fragile site; occupational exposure; mutagen exposure; case-control study; trisomy; benzene; organic solvent; petroleum; epidemiology; environmental carcinogens; painter; driver;

   Sammanfattning : The aims of this thesis are to evaluate the role of environmental exposures, especially professional exposure to organic solvents and petroleum products in the etiology of acute leukemia and to investigate if there is a correlation between the exposure to a specific leukemogen factor and a clonal chromosome aberration of the leukemic cells. Papers I and II present results of a case-control study of environmental exposures, in all occupations during life-time, medical treatments with medicines, chemotherapy and radiation, tobacco-use and the exposure to chemical compounds in private life in 120 patients with acute leukemia and of 120 controls, matched for age (+ 4 years), residence and sex. LÄS MER

4. 23. Connected by voids: Interactions and screening in sparse matter

   Författare :Kristian Berland; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Using theory and computations, we study structural and electronic properties of nanoscale systems where regions of low density are important for response and function. Materials with such properties are called sparse matter. Examples include assemblies of organic molecules and layered structures like graphite. LÄS MER

5. 24. Towards a versatile gas sensing platform with epitaxial graphene

   Författare :Marius Rodner; Jens Eriksson; Kajsa Uvdal; Roland Pohle; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : The work presented in this thesis focuses on how to utilize epitaxially grown graphene on SiC as a basis for ultra-sensitive gas sensor. Several approaches have been tested and evaluated to increase the sensitivity, selectivity, speed of response and stability and of the graphene based gas sensors with a focus on air quality monitoring applications. LÄS MER

7. 25. Charge-transfer excitations and phtophysical properties of molecular building blocks

   Författare :Oscar Rubio Pons; Yi Luo; Antonio Rizzo; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Theoretical chemistry; Photophysical porperties; CCSD; CASSCF; Teoretisk kemi; Theoretical chemistry; Teoretisk kemi;

   Sammanfattning : This thesis reports a state-of-the-art theoretical study of photophysical properties of organic charge-transfer aromatic molecules. These molecules are building blocks of molecular functional materials used in modern photonics technology and play essential roles in chemistry and biology in general. LÄS MER