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Popular Abstract in Swedish Cellulosa etrar är en grupp ämnen som har många tillämpningar inom olika områden. Det stora antalet tillämpningar ställer höga krav på de teknologiska egenskaperna hos cellulosa etrarna. För att kunna kontrollera de teknologiska egenskaperna är det nödvändigt att utveckla analytiska metoder, med vilka egenskaperna kan korreleras till den kemiska strukturen. Ibland går dCellulose based derivatives, such as cellulose ethers, today find many applications in a diverse range of fields. The numerous applications put high demands on the technological performance of the cellulose ethers. In order to be able to control the technological properties it is necessary to develop analytical methods by, which they can be correlated to the chemical structure. In some cases va

This thesis describes the affinity and enantiomeric selectivity of the cellobiohydrolase Cel7A (isolated from Hypocrea jercorina). The chiral recognition of the enzyme has been studied with respect to amino alcohols and new ligands have been designed, based on the structure of the common ?-blocker propranolol. Capillary electrophoresis have been used to determine the dissociation constants of the

With today’s rapid changes in socio-economy and technology, knowledge and learning are critical issues for most companies and private and civil service organisations. The needs for competence development range from short informal courses to formal educational programs at university level. Informal learning is less predictable. It is nevertheless a very natural way of learning, although it is often

This paper investigates the dimensioning of a server used for external overload control in service architecture. Great savings can be obtained by an operator if the dimensioning analysis is performed correctly. As one of the main parts of this paper it is shown that Poissonian arrivals is a good assumption for some services in service architectures. Methods that can be used for dimensioning are pr

The consolidation of paper during drying is of interest to increase the understanding of the development of the paper quality. The mercury displacement technique proved suitable to measure the apparent solid density and the volume fractions of solid, liquid and gas in wet paper sheets. Measurements were performed on handsheets of chemi-thermomechanical pulp (CTMP), bleached and unbleached softwood

A calculation of the pion mass and decay constant at NNNLO in two-flavour chiral perturbation theory is presented. The results are cross-checked by using both the exponential and square root parametrizations of the Goldstone matrix field, as well as by comparing to the known leading log coefficients of the two quantities. A small numerical study of the quark mass dependence is performed, and for a

A search for the supersymmetric partners of the Standard Model bottom and top quarks is presented. The search uses 36.1 fb−1 of pp collision data at s=13 TeV collected by the ATLAS experiment at the Large Hadron Collider. Direct production of pairs of bottom and top squarks (b¯ 1 and t¯ 1) is searched for in final states with b-tagged jets and missing transverse momentum. Distinctive selections ar

Measurements of differential cross-sections of top-quark pair production in fiducial phase-spaces are presented as a function of top-quark and tt¯ system kinematic observables in proton-proton collisions at a centre-of-mass energy of s=13 TeV. The data set corresponds to an integrated luminosity of 3.2 fb−1, recorded in 2015 with the ATLAS detector at the CERN Large Hadron Collider. Events with ex

About music in Swedish children's films and its representation and construction of childhood, gender and ethnicity.

This paper presents single lepton and dilepton kinematic distributions measured in dileptonic tt¯ events produced in 20.2fb - 1 of s=8 TeV pp collisions recorded by the ATLAS experiment at the LHC. Both absolute and normalised differential cross-sections are measured, using events with an opposite-charge eμ pair and one or two b-tagged jets. The cross-sections are measured in a fiducial region cor

Om användningen av operamusik och tystnad i filmmusik

We investigate the relation between crystal stacking faults in individual wurtzite InAs and GaAs nanowires and the intensity of the forbidden longitudinal optical (LO) phonon mode in the Raman spectra. Micro-Raman spectroscopy and transmission electron microscopy are combined on the same individual nanowires to evaluate the LO mode intensity as a function of the stacking fault density. A clear inc