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  • 1
    Digitale Medien
    Digitale Medien
    350 Main Street , Malden , MA 02148-5020 , USA , and P.O. Box 1354, Garsington Road , Oxford OX4 2DQ , UK . : Blackwell Science Inc
    Journal of interventional cardiology 18 (2005), S. 0 
    ISSN: 1540-8183
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: The incidence of anomalous origin of the coronary arteries varies between 0.2% and 1.2%; the anomalous right coronary artery accounting for 6–27% of all the cases. To date technical experience on angioplasty in patients with anomalous coronary arteries reported in the literature is limited. A major factor is the selection of the guiding catheter to access the anomalous origin and also to give good support during angioplasty. We report the details of angioplasty in a patient with a similar problem and the dilemma following a fractured segment of the guidewire retained in the coronary vasculature.
    Materialart: Digitale Medien
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Catalysis letters 61 (1999), S. 219-224 
    ISSN: 1572-879X
    Schlagwort(e): aluminium phosphate catalysts ; aldehyde dehydration ; isoprene synthesis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract The synthesis of isoprene from the dehydration of 2‐methylbutanal is described using aluminium phosphates as catalysts. Two samples of aluminium phosphate are studied prepared from the reaction of phosphoric acid with aluminium chloride or sulphate. The chloride route gives a mixed cristobalite/tridymite AlPO4 and this is shown to be more active than a catalyst containing only the tridymite form of AlPO4 formed from the sulphate route. The AlPO4 catalysts are also shown to be active catalysts for the synthesis of isoprene from 3‐methylbutan‐2‐one, which is the major by‐product formed from the reaction of 2‐methylbutanal. The AlPO4 catalysts are deactivated due to the deposition of coke in addition to loss of phosphorus from the surface. Catalytic activity can be totally restored by a simple calcination procedure at 800°C.
    Materialart: Digitale Medien
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  • 3
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 384 (1996), S. 341-343 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Catalytic combustion of pollutants offers considerable advantages over currently industrially operated thermal combustion. As the catalyst effects oxidative destruction at lower temperatures it is not classed as an incineration process and this eliminates many regulatory requirements. In addition, ...
    Materialart: Digitale Medien
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  • 4
    Publikationsdatum: 2022-05-25
    Beschreibung: Author Posting. © National Academy of Sciences, 2006. This article is posted here by permission of National Academy of Sciences for personal use, not for redistribution. The definitive version was published in Proceedings of the National Academy of Sciences 103 (2006): 6448-6453, doi:10.1073/pnas.0600830103.
    Beschreibung: Submersible exploration of the Samoan hotspot revealed a new, 300-m-tall, volcanic cone, named Nafanua, in the summit crater of Vailulu'u seamount. Nafanua grew from the 1,000-m-deep crater floor in 〈4 years and could reach the sea surface within decades. Vents fill Vailulu'u crater with a thick suspension of particulates and apparently toxic fluids that mix with seawater entering from the crater breaches. Low-temperature vents form Fe oxide chimneys in many locations and up to 1-m-thick layers of hydrothermal Fe floc on Nafanua. High-temperature (81°C) hydrothermal vents in the northern moat (945-m water depth) produce acidic fluids (pH 2.7) with rising droplets of (probably) liquid CO2. The Nafanua summit vent area is inhabited by a thriving population of eels (Dysommina rugosa) that feed on midwater shrimp probably concentrated by anticyclonic currents at the volcano summit and rim. The moat and crater floor around the new volcano are littered with dead metazoans that apparently died from exposure to hydrothermal emissions. Acid-tolerant polychaetes (Polynoidae) live in this environment, apparently feeding on bacteria from decaying fish carcasses. Vailulu'u is an unpredictable and very active underwater volcano presenting a potential long-term volcanic hazard. Although eels thrive in hydrothermal vents at the summit of Nafanua, venting elsewhere in the crater causes mass mortality. Paradoxically, the same anticyclonic currents that deliver food to the eels may also concentrate a wide variety of nektonic animals in a death trap of toxic hydrothermal fluids.
    Beschreibung: This work was supported by the National Oceanic and Atmospheric Administration (NOAA) Oceans Exploration and the Hawaii Undersea Research Laboratory–NOAA Undersea Research Program, the National Science Foundation, the Australian Research Council, and the SERPENT program.
    Repository-Name: Woods Hole Open Access Server
    Materialart: Article
    Format: 5598800 bytes
    Format: application/pdf
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  • 5
    Publikationsdatum: 2018-04-07
    Beschreibung: Cryptic glucocorticoid receptor-binding sites pervade genomic NF-κB response elements Cryptic glucocorticoid receptor-binding sites pervade genomic NF-κB response elements, Published online: 06 April 2018; doi:10.1038/s41467-018-03780-1 Glucocorticoid receptor (GR) regulates immunity and inflammation but the mechanisms by which GR represses proinflammatory genes are still being debated. Here the authors use a multidisciplinary approach and show that GR binds to a cryptic site within genome-wide NFκB DNA response elements to repress pro-inflammatory genes.
    Digitale ISSN: 2041-1723
    Thema: Biologie , Chemie und Pharmazie , Allgemeine Naturwissenschaft , Physik
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