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C–H activation through late transition metal cyclometallation. Addressing selectivity and reactivity problems.

Popular Abstract in English Synthetic chemicals are the basis of the modern civilisation. Nowadays, they have a bad reputation, but it is only due to them that we are able to live healthier, longer, receive improving medical treatments, use the comforts of modern technologies and not die of thirst and starvation, despite the immense population growth. The main task of organic synthesis is to transThe ligand-directed C—H activation relies on a coordinating donor atom being in proximity to the C—H bond activated. Cyclometallation of 2-(1-naphthyl)-pyridine – a substrate containing both γ- and δ-positions in proximity to the directing nitrogen atom – was studied. Cycloruthenation and cyclopalladation result in γ-substitution and formation of the corresponding 5-membered metallacycles, which i

The functional anatomy of kappa promoters

Immunoglobulin kappa promoters were collected from mice and man. It was shown that they had homology within but not between subgroups, and the promoters were also conserved between species. The octamer element was found in all promoters, but other sequence elements were conserved within the distinct subgroups. E-boxes were found in most promoters and were usually of the E2A type. A mouse kappa pro

The Effect of Fuel Volatility on Hcci Using Simultaneous Formaldehyde and Oh Plif

Simultaneous formaldehyde and OH PLIF have been applied in a direct-injected HCCI engine. The engine is a 0.5 l single-cylinder optical engine equipped with EGR system. PLIF measurements were performed with the engine run with two different fuels of low and high volatility, respectively. Different ratios of EGR were also examined. The aim of the study was to investigate how fuels with different vo

Multi-Pitch Estimation using Harmonic MUSIC

In this paper, we present a method for estimation of the fundamental frequencies, or pitches, of several periodic sources. This difficult estimation problem occurs, for example, in speech and audio processing whenever multiple speakers or tones are present. The presented method is an extension of a recently proposed method for estimation of the fundamental frequency of a set of harmonically relate

Cryptanalysis of the Stream cipher BEAN

BEAN is a recent stream cipher proposal that uses Feedback with Carry Shift Registers (FCSRs) and an output function. There is a sound motivation behind the use of FCSRs in BEAN as they provide several cryptographically interesting properties. In this paper, we show that the output function is not optimal. We give an efficient distinguisher and a key recovery attack that is slightly better than brut

Silicon realization of an OFDM synchronization algorithm

n this paper a hardware architecture for an OFDM synchronizer is presented. The proposed synchronization unit can be used in any OFDM system that uses a cyclic prefix. The algorithm is based on the correlation introduced by the cyclic prefix, which is exploited in the time domain where both time and frequency offset are estimated simultaneously. The synchronization unit also performs frequency cor

Acceptance and Cognitive Restructuring : Analyses and comparisons from an emotion regulation perspective

En central del i de flesta psykoterapeutiska inriktningar utgörs av hur man ser på emotioner samt vilka konsekvenser olika sätt att förhålla sig till eller reglera emotionerna får: Ur ett psykoanalytiskt perspektiv ses primitiva och rigida försvarsmekanismer riktade mot omedvetna affekter, drifter och impulser, som en viktig bidragande faktor till utvecklandet av psykiska besvär (Weiner & BornThe general aim of the present thesis was to further our understanding of cognitive restructuring and acceptance, both as concepts and as psychological processes related to emotion regulation. In doing this, concepts and processes related to cognitive restructuring and acceptance were examined in four different studies using different designs and methodologies. The main purpose of Study I was to

Krigarnas och helgonens tid. Västeuropas historia 400-800 e.Kr.

Boken skildrar den senaste forskningens syn på historisk utveckling åren 400-800 e.Kr. i Västeuropa. Den är uppdelad i fyra huvudavdelningar: (1) Ett politiskt skelett, (2) Människorna, deras liv och försörjning, (3) Den tidigmedeltida idévärlden: trosföreställningar och kultur, (4) Människan i samhället: krig, lag, makt och kön. Huvudbudskapet är att förändringen i det europeiska samhället under