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  • 2000-2004  (34)
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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 145 (2001), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Avoidance of allergens has been shown to be of benefit in patients with atopic asthma sensitized to indoor allergens. In atopic dermatitis, there is so far little information about the effect of house dust mite elimination strategies. Objectives We therefore performed a randomized controlled study of house dust mite control in patients with this disease. Methods Twenty adult patients with moderate to severe atopic dermatitis were included. Inclusion criteria were a positive RAST to house dust mite antigen (CAP class 〉 3) and a concentration of 〉 2 µg g−1 of the house dust mite antigen Der p1 in the patient's mattress dust. Patients were randomized to either the active treatment group (allergen-impermeable mattress encasing, acaricide spray containing tannic acid and benzylbenzoate) or a control group (allergen-permeable encasing, spray containing water and traces of ethanol). Severity of disease was estimated every 2 months by an established score (SCORAD), and eosinophil cationic protein (ECP) in the serum was determined by enzyme-linked immunosorbent assay. Furthermore, the use of topical steroids was quantified. Patients assessed daytime pruritus and pruritus-induced sleeplessness weekly on a visual analogue scale. The study lasted 1 year. Results At the end of the study, the active treatment group showed a statistically significant reduction in Der p1 exposure as compared with the control group. However, when comparing the change from the start to the end of the study, there was no statistically significant difference between active treatment and control groups as measured by the SCORAD score and by ECP levels in the serum. Some patients in the active treatment group reported less pruritus-induced sleeplessness, but there was no statistically significant difference between the two treatment groups. Conclusions For adult patients with atopic dermatitis it was shown that 1 year of house dust mite avoidance reduced the allergen exposure, but an improvement of overall disease activity was not demonstrated.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 147 (2002), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 147 (2002), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary Background Several laboratory markers have been described to correlate positively with disease activity of atopic dermatitis (AD). These include soluble adhesion molecules and eosinophil granular proteins. Although the correlation of these parameters with the severity and extent of skin involvement has been repeatedly studied in the past, no systematic investigation has been performed over a lengthy period of time. In addition, no subjective disease parameters recorded by the patient have been included in studies dealing with disease activity. Objectives To assess the validity of different objective and subjective parameters [soluble E-selectin (sE-selectin), soluble vascular cell adhesion molecule-1 (sVCAM-1), eosinophil cationic protein (ECP), urinary nitrate excretion (reflecting endogenous nitric oxide formation) and the patients' impressions of pruritus, sleeplessness and skin status] as markers of AD disease activity. Methods Twenty patients were examined for 1 year and their skin status was evaluated by an established score (SCORAD). sE-selectin, sVCAM-1 and ECP were analysed by commercial test kits. Urinary nitrate concentration was measured by gas chromatography-mass spectrometry. The subjective parameters, pruritus, sleeplessness and impression of skin status, were recorded by the patients on a visual analogue scale. Results In this long-term trial, only sE-selectin and the subjective parameters showed a statistically significant correlation with the SCORAD score. Conclusions Our data indicate that basic clinical scoring remains a most effective and relevant method of recording skin disease activity in AD.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Copenhagen : Munksgaard International Publishers
    Allergy 56 (2001), S. 0 
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' journal of analytical chemistry 366 (2000), S. 851-856 
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The concentration of thiram in aqueous solution decreases by 50–75% within 20 min in the presence of cut pieces of apple, cucumber or celeriac with a section surface area of 160 cm2 each. The decomposition rate is predominantly influenced by the section surface area of the cut fruit and vegetable samples. Denaturing reaction conditions (exchange of the solvent water by methanol; boiling of sample material) will significantly slow down the decomposition rate. It was concluded that the thiram decomposition had been caused by enzymes on the section surface of the fruit and vegetable samples. For a specific determination of thiram, a simple rinsing of the intact fruit and vegetable material was appropriate as extraction method. For the screening of thiram residues, the often used Keppel method, which determines CS2 from thiram or dithiocarbamates seems to be applicable even if samples had been coarsely cut, since decomposition of the CS2-forming intermediates is slower than the breakdown of thiram itself. Therefore, specific determination of thiram is necessary only, if maximum residue limits for dithiocarbamates are not adhered to.
    Type of Medium: Electronic Resource
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  • 6
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 7
    Publication Date: 2019-12-03
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 8
    Publication Date: 2020-02-12
    Description: An analysis of 108,058 atmospheric refractivity profiles observed by CHAMP during 2002 and 2003 reveals a negative bias compared to ECMWF meteorological fields at altitudes below 5 km. The bias is most pronounced in the tropical Pacific, Central Africa, Indonesia, and India with values reaching -4%. In order to separate bias contributions caused by critical refraction from contributions induced by the receiver tracking process a comprehensive end-to-end simulation study was performed using radio sonde profiles obtained regularly by Alfred Wegener Institute aboard research vessel POLARSTERN since 1982. Within a subset of 2917 profiles recorded between 60N and 60S on the Atlantic ocean between 29 December 1982 and 14 November 2003, 40.2% (1172 profiles) indicate the presence of critical refraction with vertical refractivity gradients below -157 km^-1. Layers exceeding the critical refractivity value are mainly located between 1 to 2 km altitude, above 3 km the occurrence of critical refraction can be disregarded. Simulations including a receiver signal tracking model and using these 2917 sonde observations confirm that four quadrant carrier phase extraction outperforms the arctangent method currently implemented on CHAMP. Within regions of low signal-to-noise ratio an interesting alternative to 'fly-wheeling' and open-loop tracking methods is carrier loop band width reduction. Changing the band width from 30 to 10 Hz improves data yield at 0.5 km altitude by about 16%.
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/conferenceObject
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  • 9
    Publication Date: 2020-02-12
    Description: The GPS radio occultation experiment within the German geoscience CHAMP (Challenging Minisatellite Payload) satellite mission has been activated now for more than 3 years. More than 250,000 occultation measurements are expected as of April 2004. Since the life time of the CHAMP satellite is predicted to last longer than 2007, the first and unique long-term set of GPS occultation data is anticipated. GFZ provides results of an operational occultation data analysis via the Information System and Data Center (ISDC). The results are available at different processing levels: atmospheric excess phase data, bending angles and vertical profiles of refractivity. Due to the ambiguity of dry and wet component to the refractivity, the bending angles and refractivity profiles are currently used to provide additional information for the data assimilation to improve the numerical weather forecast. First impact studies already demonstrated the ability of the CHAMP refractivity data to improve the global forecasts. The temperature profiles, provided at ISDC, are calculated assuming that the air is dry. The resulting dry temperature profiles are almost identical with the real temperature at altitudes above 10 km, where the wet component of the refractivity can be neglected. However, vertical profiles of the tropospheric temperature and water vapor can only be derived using ancillary atmospheric information from e.g. meteorological analyses (either temperature or water vapor). Tropospheric water vapor and temperature profiles are derived using the improved version (005) of GFZ’s operational refractivity profiles, which will be provided via ISDC by about mid 2004. The Full Spectrum Inversion (FSI) technique is used for the data analysis in the lower troposphere. To combine the measurements with the ancillary meteorological information in a statistically optimal way an operational 1Dvar retrieval code is used for the water vapor profiling. The results are validated with ECMWF analyses and radiosonde data.
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/conferenceObject
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  • 10
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    In:  7th Latin-American Conference on Space Geophysics (Atibaia, São Paulo, Brazil)
    Publication Date: 2020-02-12
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/conferenceObject
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