Search results

Abstract is not available

An alternative experimental outline to measure homodyne detected three-pulse photon-echo data is presented. The novel experimental approach allowing for online monitoring and correction of experimental timing and stability is discussed in detail using the paradigm system of Nile blue in alcohol solution. It is shown that excellent signal-to-noise ratios together with high reproducibility of the da

Logarithmic norms are often used to estimate stability and perturbation bounds in linear ODEs. Extensions to other classes of problems such as nonlinear dynamics, DAEs and PDEs require careful modifications of the logarithmic norm. With a conceptual focus, we combine the extension to nonlinear ODEs [15] with that of matrix pencils [10] in order to treat nonlinear DAEs with a view to cover certain

OBJECTIVE: To ascertain whether the perinatal cerebral blood flow velocity differed between vaginally delivered appropriate for gestational age (vag. AGA) term babies, AGA babies delivered by Caesarean section (C.s. AGA), and small for gestational age (C.s. SGA) babies also delivered by Caesarean section. STUDY DESIGN: Forty-five babies were examined by Doppler ultrasound of the middle cerebral ar

Popular Abstract in Swedish Efter diskoteksbranden i Göteborg 1998, då 63 ungdomar dog och långt fler skadades, öppnades över 100 krisgrupper och krisjourer av stadsdelsförvaltningar, sjukhus och frivilligorganisationer. Avhandlingen bygger på intervjuer med 21 drabbade och 29 företrädare för olika krisgrupper. De drabbade fick av krisgrupperna praktisk hjälp och stöd t.ex. när de anhöriga skulle The aim of the dissertation is to study the organized professional process and the spontaneous integrating and unifying process after the discotheque fire in Gothenburg 1998, when 63 young people died. Over a hundred crisis groups and duty centres were opened for the affected people. These groups are composed of representatives of the social services, psychiatry, the churches and voluntary organiz

Abundant selachian remains have been recovered from a number of horizons through the Purbeck Group at Durlston Bay, Lulworth Cove and Stair Hole in southern England. The remains, primarily teeth, but additionally fin spines and dermal denticles, belong to selachians from two major groups, Hybodontoidea and Rhinobatoidei. The assemblage of hybodont sharks is quite diverse, comprising six species fr

Rate-distortion trellis source codes are developed for quantizing memoryless IID sources. The codes are generated by simple linear congruential recursions. The method generates codes at a variety of rates including fractional ones; reproducer sets can be large, a crucial advantage with certain sources. Axioms for good code construction are developed that are based on recursion properties, certain

beta-Phosphoglucomutase (beta-PGM), a 28 kDa monomer, catalyzes the reversible conversion of beta-D-glucose-1-phosphate to beta-D-glucose-6-phosphate in maltose metabolism in a variety of organisms. Sequence analysis of beta-PGM indicates that it is a member of the haloacid dehalogenase (HAD) enzyme superfamily, which evolved to cleave C-Cl, C-P and C-OP bonds in a variety of substrates. beta-PGM

Popular Abstract in Swedish Arktis utgör en viktig del i Jordens miljö och vad som händer där har stor påverkan på det globala klimatet, samtidigt som området är mycket känsligt för förändringar. Under kvartärtiden har stora isar flera gånger täckt Skandinavien, Ryssland, Sibirien och Nordamerika och täcker än idag stora delar av Grönland. Isarna har lämnat spår (landformer och sediment) efter sigThe North Taymyr ice-marginal zone (NTZ) on the Taymyr Peninsula, Arctic Siberia and the Ugleelv Valley on Jameson Land, East Greenland, have been investigated with the aim of reconstructing the glacial history, including depositional processes and environments. Geomorphological, sedimentological, stratigraphical and remote sensing methods have been combined to give a comprehensive view of develop

Popular Abstract in Swedish Hjärnan består av hjärnbarken, även kallad den grå substansen, och den underliggande vita substansen. Den grå substansen med alla nervceller svarar bland annat för våra kognitiva funktioner som gör var och en av oss till unika individer. Medvetande, minne, språk och tal liksom ilska och glädje är alla exempel på egenskaper och funktioner som styrs från den grå substanseAlzheimer's disease (AD) is the most prevalent type of dementing disorder. The cortical pathology of AD has been recognized for almost a century. In later years, an associated pathological feature of AD has been identified which affects the white matter. This white matter disease (WMD), defined in the microscope, consists of a subtotal tissue loss of the white matter structural components. WMD is

Biotinylated small unilamellar liposomes were affinity partitioned in an aqueous poly(ethylene glycol)-dextran two-phase system using avidin coupled to dextran as affinity ligand. In the absence of affinity ligand more than 90% of the liposomes partitioned in the poly(ethylene glycol)-rich top phase, whereas in its presence more than 95% partitioned in the dextran-rich bottom phase. For this redis