Sökresultat

A molecular level understanding of the structural reorganization accompanying interfacial electron transfer is important for rational design of solar cells. Here we have applied XTA (X-ray transient absorption) spectroscopy to study transient structures in a heterogeneous interfacial system mimicking the charge separation process in dye-sensitized solar cell (DSSC) with Ru(dcbpy)(2)(NCS)(2) (RuN3)

The long-range order in strongly coupled dipolar systems has been studied using large-scale simulations for systems containing up to 100 000 particles. It is found that the boundary conditions used strongly influence the result. It is found that a periodic system modeled with the minimum image approximation yields an artificial order, whereas the same system described using the Ewald summation tec

HAMLET (human alpha-lactalbumin made lethal to tumor cells) is a molecular complex derived from human milk that kills tumor cells by a process resembling programmed cell death. The complex consists of partially unfolded alpha-lactalbumin and oleic acid, and both the protein and the fatty acid are required for cell death. HAMLET has broad antitumor activity in vitro, and its therapeutic effect has

In this paper we studied carrier drift dynamics in APFO3:PC61BM solar cells of varied stoichiometry (2:1, 1:1, and 1:4 APFO3:PC61BM) over a wide time range, from subpicoseconds to microseconds with a combination of ultrafast optical electric field probing and conventional transient integrated photocurrent techniques. Carrier drift and extraction dynamics are strongly stoichiometry dependent: the s

Quantum-dot-sensitized solar cells are emerging as a promising development of dye-sensitized solar cells, where photostable semiconductor quantum dots replace molecular dyes. Upon photoexcitation of a quantum dot, an electron is transferred to a high-band-gap metal oxide. Swift electron transfer is crucial to ensure a high overall efficiency of the solar cell. Using femtosecond time-resolved spect

This paper deals with the radiation protection of patients in diagnostic radiology and nuclear medicine. Modern equipment like CT, PET/CT and SPECT/CT are very important in the daily hospital routine and there is a risk to overuse them, which results in unnecessarily high doses both collectively and to individuals. Detailed referral criteria are needed as well as improved education and training in

The purpose of the thesis is to investigate how social and cultural factors influence the decision making behaviour regarding publicly displayed items, using the outdoor space as an example. We want to provide a more dynamic view on decision making concerning publicly displayed products, taking the personalities of the consumers into consideration. By using a qualitative research design we found t

The purpose of this thesis is to investigate whether the risk attitudes of experts in risk management, i.e. the group of experts participating in the study made by Abrahamsson and Johansson (2006), comply with the preferences of the general public. A major focus of the thesis is the development of the experimental setup, which is based on the trade off method developed by Wakker and Deneffe (1996)

Under konferensen TED-Global 2009 uppträdde författarinnan Chimamanda Adichie med The Danger of a single story som vill varna för det ensidiga berättandets stigmatiserande konsekvenser. Då talet är uppbyggt av berättelser förenas det litterära och det retoriska. Med analysmetoden Narrative Criticism ville jag undersöka hur några narrativa strategier rörande berättelsens karaktärer, dess sceniska p

With this essay I have examined the view of the saints during different epochs of the Middle Ages and what they considered distinguised a saint. The sources I have used in my examination are three different hagiographies: Dialogi de vita et miraculis patrum Italicorum part 2 by Pope Gregory the Great in the 6th century, Vita Ansgarii by Rimbert in the 9th century and Vita Anselmi archiepiscopi Can

We investigate whether the recently observed population of high-velocity white dwarfs can be derived from a population of binaries residing initially within the thin disc of the Galaxy. In particular, we consider binaries where the primary is sufficiently massive to explode as a Type II supernova. A large fraction of such binaries are broken up when the primary then explodes as a supernova, owing

Experimental studies are carried out to investigate the heat transfer characteristics involving an impinging jet with a shallow-angle in a crossflow. A rib is applied to control the jet impingement heat transfer Liquid crystal technique is employed to measure the wall temperature and obtain the heat transfer coefficients. In the study, the Reynolds number for the crossflow is 80,000 and the Reynol

The article examines four motifs/textual corpora in the Bible which have been referred to by those in favour of slavery: (1) the Exodus motif, (2) the Curse of Noah, (3) the parables of Jesus, and (4) the epistles of Paul. It is argued in the article that Christianity, with its canonized metaphors of slavery actually delayed the abolition of slavery in the 19th century by relativizing and idealizi

After a brief introduction (1) this chapter covers: (2) optical tweezers and related techniques, (3) uses of lasers for ablation, desorption, ionization, and dissection, (4) fluorescent labeling, (5) Abbe's diffraction limit to spatial resolution in microscopy, (6) two-photon excitation fluorescence microscopy, (7) stimulated emission depletion (STED), (8) near-field microscopy, (9) quantum dots a

Searches for extra dimensions have been made at the four LEP experiments, ALEPH, DELPHI, L3 and OPAL, where different processes have been searched for within both the ADD and Randall-Sundrum scenarios. Since no signs of any signal have been observed the results have been used to set exclusion limits in the corresponding extra dimension models. This talk presents both individual results from the LE

At a large tunnel project in Southern Sweden a number of geoelectrical and IP imaging were carried out. The tunnel is drilled through a horst with a complex geology which includes fractures, high water content and weathered zones. The measurements where carried out to compile a geologic model to use in the further planning of the project. The resistivity and IP complements each other very well sin

Abstract in UndeterminedAn interlaboratory study on measurement of evaporative resistance (Ret) with thermal manikins has been conducted in order to assess the repeatability and reproducibility limits as a function of mean resistance values, when using similar test protocols (ASTM F2370). Three independent laboratories tested seven clothing ensembles, with Ret ranging from very low to very high va