Sökresultat
Filtrera
Filtyp
Din sökning på "*" gav 530536 sökträffar
Spectroscopic studies of aluminum and gallium complexes with oxalate and malonate in aqueous solution
The local structures of Ga(III) in aqueous oxalate and malonate complexes were studied by means of Ga K-edge EXAFS spectroscopy. Irrespective of the number and type of coordinated ligands, the EXAFS results showed very regular first coordination shells consisting of six oxygen atoms. Scattering paths from more distant atoms revealed that both oxalate and malonate form mononuclear chelate structure
Avian orientation at steep angles of inclination: experiments with migratory white-crowned sparrows at the magnetic North Pole
The Earths magnetic field and celestial cues provide animals with compass information during migration.Inherited magnetic compass courses are selected based on the angle of inclination, making itdifficult to orient in the near vertical fields found at high geomagnetic latitudes. Orientation cage experimentswere performed at different sites in high Arctic Canada with adult and young white-crownedsp
Automatic Tuning of Simple Regulators for Phase and Amplitude Margins Specifications
Physiotherapy in infants and young children with cystic fibrosis: current practice and future developments.
Weichselian glaciation of the Taymyr Peninsula, Siberia
A precise measurement of the tau lifetime
The tau lepton lifetime has been measured with the e(+) e(-) --> tau(+) tau(-) events collected by the DELPHI detector at LEP in the years 1991 - 1995. Three different methods have been exploited, using both one-prong and three-prong tau decay channels. Two measurements have been made using events in which both taus decay to a single charged particle. Combining these measurements gave tau(tau) ( 1
Research in heat transfer
Accumulation of persistent organic pollutants in Tasmanian platypus (Ornithorhynchus anatinus)
Tailfat samples were collected from 56 platypuses, 38 male and 18 fernale in Tasmania. No statistically significant, nor apparent, differences between the sexes were found for tailfat lipid levels and DDT and its metabolites, Lindane and PCB concentrations in tailfat lipid. Apparently-but not statistically-significantly different levels of DDT and its metabolites, Lindane and PCB concentrations we
Lake-level records and palaeoclimates of northern Eurasia
This thesis documented lake-level changes across Eurasia and made reconstructions of regional climates and atmospheric circulation patterns during the late Quaternary; analysed temporal signals in lake record; used lake data to improve pollen-based quantitative recostructions of climate; and compared lake data with simulated P-E fields from Atmospheric General Circulation (AGC) models. Lake record
A phonetic study of emphasis and vowels in Egyptian Arabic
Abstract is not available.
Observations on cerebral amyloid angiopathy and microvascular pathology in Alzheimer's disease and vascular dementia
Popular Abstract in Swedish Alzheimers sjukdom och vaskulär demens är de vanligaste orsakerna till demens hos äldre, ett tillstånd som i takt med den ökande åldrade befolkningen kommer att innebära ett allt större lidande och en alltjämt ökande ekonomisk belastning. Direkta och indirekta kostnader för vård och omsorg av demenspatienter uppgår sannolikt till ca 40 miljarder kronor om året. Detta ärDementia is a state of permanent loss of cognitive function, most commonly affecting the elderly. With a rapidly growing aged population, the spectrum of disorders that lead to dementia is exerting an ever-increasing toll on patients, families and society alike. The most common dementing disorders are Alzheimer's disease and vascular dementia. Although Alzheimer's disease is very common and was de
Human aging, muscle mass, and fiber type composition
To assess the age-related loss of muscle mass and to determine the mechanisms behind this aging atrophy, the muscle structure and fiber type composition have been estimated, using invasive and noninvasive techniques. Limb muscles from older men and women are 25-35% smaller and have significantly more fat and connective tissue than limb muscles from younger individuals. Comparisons of muscle biopsi
Equivalent roughness height for plane bed under steady flow
This paper presents a new relationship between the roughness height and the main hydrodynamic and sediment parameters for plane beds under steady current conditions. In order to derive such a formula, a large data base involving plane-bed experiments was compiled from previous investigations and analyzed. Comparisons between the data and different existing predictive formulas for the bed roughness
Two new species of Caloplaca (Teloschistaceae) from the southern hemisphere
Caloplaca gyalectoides S. Kondratyuk & Karnefelt from the Cape Province, South Africa, and Caloplaca chilensis S. Kondratyuk, Karnefelt, Froden & Arup with an associated parasymbiont Arthonia tetraspora S. Kondratyuk & Karnefelt occurring mainly along the coast in central Chile are described as new. Possible associated taxa are briefly discussed. Distribution maps are provided for all
Two previously proposed P-1/P-2-differentiating and nine novel polymorphisms at the A4GALT (P-k) locus do not correlate with the presence of the P1 blood group antigen
Background: The molecular genetics of the P blood group system and the absence of P1 antigen in the p phenotype are still enigmatic. One theory proposes that the same gene encodes for both the P1 and P-k glycosyltransferases, but no polymorphisms in the coding region of the P-k gene explain the P-1/P-2 phenotypes. We investigated the potential regulatory regions up- and downstream of the A4GALT (P
Mechanical Behaviour of Wood Exposed to Humidity Variations.
The effects on wood of simultaneous mechanical and moisture loading are studied. In order to clarify the mechano-sorptive behaviour of wood, a review of different phenomena presented in the literature is included. Compressive tests have been performed on spruce. The tests have been performed with both constant load and varying load. The humidity has been varied during the tests. The properties of
Värme- och luftströmning i välisolerade väggar
[abstract missing]
Identification of a novel isoform of the cyclic-nucleotide phosphodiesterase PDE3A expressed in vascular smooth-muscle myocytes
We have identified a new cyclic-nucleotide phosphodiesterase isoform, PDE3A, and cloned its cDNA from cultured aortic myocytes. The nucleotide sequence of its coding region is similar to that of the previously cloned myocardial isoform except for the absence of the initial 300-400 nt that are present in the latter, as confirmed by reverse-transcriptase-mediated PCR, 5' rapid amplification of cDNA
Det sociala livet kring ett bilvrak. Vanlighetens attraktion i en fritidsaktivitet för ungdomar i habilitering
Sedan våren 2005 har en grupp tonåriga pojkar inom habiliteringen i Region Skåne engagerats i en till synes udda fritidsaktivitet. Tillsammans med medlemmar i en motorförening och en fritidsförening samlas de en kväll i veckan på en motorgård i Väla utanför Helsingborg för att meka med en gammal bil. ”Projekt Raggarbil” har på kort tid blivit mycket populärt bland ungdomarna, deras föräldrar och