The luminescence from single quantum dots has been studied. Single dot photoluminescence was studied under continuous as well as under pulsed excitation. Time-resolved studies revealed fast relaxations in quantum dots. The time resolved measurements were fitted with a set of rate equations. Blinking in the luminescence was observed on a few quantum dots. The polarization of the emission from singl

Popular Abstract in Swedish DNA kan ses som en negativ laddad polymer som samtidigt har grupper som vill undvika vatten och därför bildas den karakteristiska dubbelspiralen. DNA och ett ytaktiv ämne (tensid) som är positivt laddad, bildar olika komplex. Dessa komplex är mycket mer kompakta än DNA själv. I denna avhandling har vi undersökt DNA och DNA-tensid komplex på olika ytor. Vi har använt oliThe interfacial behavior of DNA and DNA-cationic surfactant has been studied. Particular attention was paid to the type of cationic surfactant and the DNA conformation (single or double stranded) as well as the DNA length. Adsorption of DNA-cationic surfactant complexes is determined by a delicate balance between the DNA-surface, cationic surfactant-surface, and cationic surfactant-DNA-solvent int

Många har berättat om sina möten med poeten och människan Gunnar Ekelöf (1907–1968). I den här boken har drygt trettio ögonvittnesskildringar samlats. Några av bidragen har tidigare varit tryckta i tidningar, memoar­böcker, essäsamlingar och självbiografier. De resterande är (utanför en trängre krets) helt okända, och några texter är nyskrivna. Flertalet skildringar hänför sig till de två, tre sis

Approximate expressions of the first moment of the order statistics of standard extreme value distributions are proposed. We compare different previously given approximations with the exact values. The results show that the approximation given here fits the exact values better than previously given models.

Artikeln analyserar Strindbergs drama "Påsk" från rättsteologiska perspektiv: lagens teologiska bruk, lagens politiska bruk, nådens "politiska" bruk. Det mångtydiga och sammansatta betonas och relateras till Strindbergs användning av lutherskt ortodoxa, rosenianska resp. swedenborgska tankar.

The influence of foreign-language acquisition on adult brain structure remains mostly unexplored. Whilst several cross-sectional studies have led to further understanding of how language can affect brain structure, only a few longitudinal studies have been conducted. We measured the effects of language acquisition on behaviour and brain structure at the Swedish Armed Forces Language School in two

Abstract in Undetermined The chapter examines the reflection of nationalism as a political ideology in Romanian history textbooks, contrasting the late Communist with the post-Communist periods.

Wireless mesh networks (WMN) have attracted considerable interest in recent years as a convenient, new technology. However, the suitability of WMN for mission-critical infrastructure applications remains by and large unknown, as protocols typically employed in WMN are, for the most part, not designed for real-time communications. In this chapter, the authors describe a wireless mesh network archit