34 research outputs found

    Schrifttum

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    Dieses Dokument beinhaltet Buchbeschreibungen von "Die Säugetiere Westfalens" (Abhandlung aus dem Westf. Landesmuseums f. Naturkunde), "Naturwaldzellen IV, Weserbergland - Nachträge Niederhein." (Schriftenreihe LÖLF), Fischerei und Naturschutz (Veröff. Rp Detmold) und "Schwermetallbelastung von Böden und Kulturpflanzen in Nordrhein-Westfalen." (Schriftenreihe LÖLF)

    Kurt Preywisch zum 80. Geburtstag

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    Die Laudatio auf Kurt Preywisch, der als Lehrer in Höxter 26 Jahre lang Biologie und Geographie unterrichtete und zahlreiche naturkundliche Arbeiten verfasste, enthält auch Ergänzungen zu dem bereits früher in der Zeitschrift Egge-Weser publizierten Schrifttumsverzeichnis des Jubilars

    Fluorescence enhancement in hot spots of AFM-designed gold nanoparticle sandwiches

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    We observe an enhancement of fluorescence from a single fluorescent sphere, which is sandwiched between two individual gold nanoparticles, forming a hot spot of strong field enhancement. The fluorescence enhancing hot spot is custom-designed by the deliberate assembly of gold nanoparticles with an atomic force microscope cantilever. The fluorescence intensity is monitored while the separation between the two gold nanoparticles is reduced by gradually pushing the gold nanoparticles closer to the fluorescent sphere. The fluorescence enhancement is maximal when the distance between the two gold nanoparticles is smallest, when the excitation polarization is parallel to the axis of the sandwich, and when the fluorescent sphere is positioned exactly on the axis connecting the two gold nanoparticles

    Sorption and separation of CO2via nanoscale AlO(OH) hollow spheres

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    The CO2 uptake on nanoscale AlO(OH) hollow spheres (260 mg g−1) as a new material is comparable to that on many metal–organic frameworks although their specific surface area is much lower (530 m2 g¬1versus 1500–6000 m2g¬1). Suited temperature–pressure cycles allow for reversible storage and separation of CO2 while the CO2 uptake is 4.3-times higher as compared to N2
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