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When theory addresses experiment; The Siegbahn-Sommerfeld correspondence, 1917-1940
Extraterrestrial chromite in latest Maastrichtian and Paleocene pelagic limestone at Gubbio, Italy: The flux of unmelted ordinary chondrites
The distribution of sediment-dispersed extraterrestrial (ordinary chondritic) chromite (EC) grains (>63 pm) has been studied across the latest Maastrichtian and Paleocene in the Bottaccione Gorge section at Gubbio, Italy. This section is ideal for determining the accumulation rate of EC because of its condensed nature and well-constrained sedimentation rates. In a total of 210 kg of limestone repr
Topological properties of citation and metabolic networks
Topological properties of "scale-free" networks are investigated by determining their spectral dimensions d(S), which reflect a diffusion process in the corresponding graphs. Data bases for citation networks and metabolic networks together with simulation results from the growing network model [A.-L. Barabasi and R. Albert, Science 286, 509 (1999)] are probed. For completeness and comparisons latt
Inandningsbara partiklar i järnvägsmiljöer
Derivation of efficiency factors for uneven irradiation on a fin absorber
In the equation for thermal energy output from a flat-plate solar collector (written as a function of the collector mean heat carrier temperature), both the gain and the loss terms are multiplied by the collector efficiency factor, F'. For a concentrating collector with an uneven (non-uniform) irradiation on the absorber, the efficiency factor for the gain term, here called the optical efficiency
Improved species concentration measurements using a species-specific weighting procedure on rotational CARS spectra
Rotational coherent anti-Stokes Raman spectroscopy (CARS) is used for measurements of temperatures and relative species concentrations. The evaluation of a rotational CARS spectrum is normally performed using a least-squares fitting algorithm to find the best-fit theoretical spectrum in a library of spectra calculated at different temperatures and relative concentrations. A general problem is that
Annotated checklist of fungus gnats from Sweden (Diptera: Bolitophilidae, Diadocidiidae, Ditomyiidae, Keroplatidae and Mycetophilidae).
The first modern Swedish checklist of fungus gnats of the families Bolitophilidae, Diadocidiidae, Ditomyiidae, Keroplatidae and Mycetophilidae is presented. The checklist results from a comprehensive literature research as well as treatment of a considerable determined and undetermined material from Swedish museum collections and recent material from several sources. To get better grounds for judg
Snö och is i vattnets kretslopp
Hur påverkar snön och isen hydrologin i Sverige...
The role of ERT/HRT.
Given the rapidly increasing number of women above 50 it is of pivotal importance to consider health issues related to gonadal hormone deficiency. The possibility of alleviating such symptoms by hormone replacement therapy (HRT) should be recognized by all physicians, not merely by gynaecologists. But which women should be given what therapy, and for how long? Due to the increased risk of endometr
Medeltida drottningar i Sverige
Dislocation modelling of short fatigue cracks
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Artikeln diskuterar möjligheterna och begränsningarna i äldres tillgänglighet till i IT-samhället under senare delen av 1990-talet. Resultatet från en intervjuundersökning (n=186)visar att äldre IT-användare kan kategoriseras i beroende, akriva och avancerade användare och att detta formas av tillgången, förmågan, förväntningarna, självbilden och dagliga restriktioner (sociala kontexten.
Inflammatory aneurysm treated by means of transfemoral endovascular graft insertion
Occupational exposure to commercial decabromodiphenyl ether in workers manufacturing or handling flame-retarded rubber
Commercial decabromodiphenyl ether (DecaBDE) is commonly used as a flame retardant in different electrical and textile applications. It is also used in the production of flame-retarded rubber compound. DecaBDE is the major technical polybrominated diphenyl ether (PBDE) in use today and consists mainly of decabromodiphenyl ether(BDE209). PBDEs, including BDE-209, are well-known environmental pollut
Renovering av krypgrundläggning för småhus
Interaction between phosphofructokinase and aldolase from Saccharomyces cevisiae studied by aqueous two-phase partitioning
Phosphofructokinase (EC 2.7.1.11) and aldolase (EC 4.1.2.13) have been highly purified from Saccharomyces cerevisiae by improved protocols. Partitioning of the enzymes in aqueous polymer two-phase systems was used to detect complex formation. The partition of each enzyme was found to be affected by the presence of the other enzyme. AMP affected the partition of the individual enzymes as well as th
Characterization of specific IgE response in vitro against protein and drug allergens using atopic and normal donors
Background: As the incidence of allergy to different compounds increases in society, the need to understand and characterize specific IgE responses becomes F. obvious. Different cell culture systems have been evaluated for their ability to support such IgE secretion. Methods: One system employed human peripheral lymphocytes (PBL) from normal donors stimulated with anti-CD3 activated T cells with o
Formation of supported phospholipid bilayers, via co-adsorption with beta-D-dodecyl maltoside
We have investigated the formation of supported model membranes via the adsorption of phospholipid-surfactant mixtures at the Si water interface by specular neutron reflection. The adsorption of mixed micelles of the nonionic surfactant beta-D-dodecyl maltoside and DOPC or POPC was determined as a function of bulk concentration, and using d(25)-beta-D-dodecyl maltoside, the composition of DOPC and
Hyphenated techniques for dioxin analysis: LC-LC-GC-ECD, GCxGC-ECD, and selective PLE with GC-HRMS or bioanalytical detection
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