Search results

Filter

Filetype

Your search for "*" yielded 532282 hits

Gut microbiota and development of atopic eczema in 3 European birth cohorts

Background: Stimulation of the immune system by gut microbes might prevent allergy development. Objective: The present study examined the hypothesis that sensitization to food allergens and atopic eczema are influenced by the infantile intestinal colonization pattern. Methods: Infants were recruited perinatally in Goteborg (n = 116), London (n = 108), and Rome (n = 100). Commensal bacteria were id

Skin morphology and layer identification using different STIM geometries

The use of on-axis geometry in scanning transmission ion microscopy (STIM) has been widely used for thin biological sample structure identification. In this configuration, the lateral resolution is optimised so that micron or submicron beam spots are easily achieved even for classic microbeam lines. Off-axis STIM was more particularly employed for rapid imaging, and also (when associated to a scat

Heavy quark production at the Fermilab Tevatron and DESY ep collider HERA using k(t) factorization with the CCFM evolution approach

The application of k(t) factorization supplemented with the Ciafaloni-Catani-Fiorani-Marchesini (CCFM) small-x evolution equation to heavy quark production at the Fermilab Tevatron and at DESY HERA is discussed. The b (b) over bar production cross sections at the Tevatron can be consistently described using the k(t)-factorization formalism together with the unintegrated gluon density obtained with

Socioeconomic and sociolinguistic predictors of children’s L2 and L1 writing quality

Spanish-English bilingual fourth grade children were reliably poorer in English receptive vocabulary and English grammar awareness compared to their English-speaking monolingual peers, but were as skillful in English language assessments of phonological awareness, reading comprehension, and five measures of writing (writing quality, word, clause, and transcribing fluency, and vocabulary diversity)

Transverse and longitudinal Bose-Einstein correlations

We show how a difference in the correlation length longitudinally and transversely, with respect to the jet axis in e+e− annihilation, arises naturally in a model for Bose-Einstein correlations based on the Lund string model. In genuine three-particle correlations the difference is even more apparent and they provide therefore a good probe for the longitudinal stretching of the string field. The c

Beta-Cell-Targeted Expression of a Dominant-Negative Mutant of Hepatocyte Nuclear Factor-1{alpha} in Mice: Diabetes Model with {beta}-Cell Dysfunction Partially Rescued by Nonglucose Secretagogues.

We studied islet function in mice with beta-cell-targeted expression of a dominant-negative mutant of hepatocyte nuclear factor (HNF)-1alpha. At age 2-3 months, anesthetized transgenic and wild-type male mice underwent an intravenous glucose (1 g/kg) tolerance test (IVGTT). It was found that transgenic mice had an abolished insulin response in association with severe glucose intolerance. In other

Isolation, characterization, and enzymatic hydrolysis of acetyl-galactoglucomannan from spruce (Picea abies)

Water-soluble hemicelluloses were extracted from spruce chips by heat-fractionation using microwave treatment. A screening of conditions (pH, temperature and residence time) was performed for the extraction of O-acetyl-galactoglucomannan (AcGGM). The yield and the average molecular weight of the extracted mannan were analysed using HPLC, size-exclusion chromatography (SEC) and mass-spectrometry. T

Selection of Resistant Streptococcus pneumoniae during Penicillin Treatment In Vitro and in Three Animal Models.

Pharmacokinetic (PK) and pharmacodynamic (PD) properties for the selection of resistant pneumococci were studied by using three strains of the same serotype (6B) for mixed-culture infection in time-kill experiments in vitro and in three different animal models, the mouse peritonitis, the mouse thigh, and the rabbit tissue cage models. Treatment regimens with penicillin were designed to give a wide

Dynamic simulation of the steam supply system for a multi-cylinder dryer

A dynamic model and simulation program describing the principles of a steam supply system for a paper dryer were developed. The dynamics of a cylinder and the paper sheet during an altered valve position were studied. The results showed that the dynamic course during a pressure increase is different from the course during a pressure decrease. A potential method for the determination of the heat tr

A novel approach to monoclonal antibody separation using high performance liquid affinity chromatography (HPLAC) with SelectiSpher-10 protein G

Protein G, a bacterial cell wall protein extracted from strains of Streptococci, has been employed as a ligand in high performance liquid affinity chromatography (HPLAC) for separation of monoclonal antibodies. Examples are given of rapid high-resolution separations of rat and mouse monoclonal antibodies belonging to various subclasses. In comparison with protein A chromatography, we were able to

Genetic basis of the K phenotype in the Swedish population.

Abstract in Undetermined BACKGROUND: The absence of all Kell blood group antigens (K0 phenotype) is very rare. K0 persons, however, can produce clinically significant anti-Ku (K5) after transfusion and/or pregnancy and require K0 blood for transfusion. Ten alleles giving rise to the K0 phenotype have been reported: different populations were studied although none from Scandinavia. STUDY DESIGN AND

Variation in the content of glucosinolates, hydroxycinnamic acids, carotenoids, total antioxidant capacity and low-molecular-weight carbohydrates in Brassica vegetables

Bioactive compounds were investigated in genotypes (cauliflower 10, white cabbage 10, curly kale 1) and plant parts of the three crops. The content of most of the major glucosinolates glucobrassicin, sinigrin and glucoiberin differed significantly between cultivars. Samples harvested in 2000 had higher amounts of several glucosinolates than samples from 1999. Within cauliflower the buds of the flo

Development of Dual-broadband Rotational CARS for Combustion Diagnostics

The present thesis concerns development and application of dual-broadband rotational coherent anti-Stokes Raman spectroscopy (DB-RCARS) for temperature and species concentration measurements in combustion processes. Both fundamental development of the technique, including experimental as well as modelling results, and measurements in practical combustion devices were conducted. A code for calcula