73 research outputs found

    Context-based urban terrain reconstruction from uav-videos for geoinformation applications

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    Urban terrain reconstruction has many applications in areas of civil engineering, urban planning, surveillance and defense research. Therefore the needs of covering ad-hoc demand and performing a close-range urban terrain reconstruction with miniaturized and relatively inexpensive sensor platforms are constantly growing. Using (miniaturized) unmanned aerial vehicles, (M) UAVs, represents one of the most attractive alternatives to conventional large-scale aerial imagery. We cover in this paper a four-step procedure of obtaining georeferenced 3D urban models from video sequences. The four steps of the procedure - orientation, dense reconstruction, urban terrain modeling and geo-referencing - are robust, straight-forward, and nearly fully-automatic. The two last steps - namely, urban terrain modeling from almost-nadir videos and co-registration of models - represent the main contribution of this work and will therefore be covered with more detail. The essential substeps of the third step include digital terrain model (DTM) extraction, segregation of buildings from vegetation, as well as instantiation of building and tree models. The last step is subdivided into quasi-intrasensorial registration of Euclidean reconstructions and intersensorial registration with a geo-referenced orthophoto. Finally, we present reconstruction results from a real data-set and outline ideas for future work

    Display of Bombyx mori Alcohol Dehydrogenases on the Bacillus subtilis Spore Surface to Enhance Enzymatic Activity under Adverse Conditions

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    Alcohol dehydrogenases (ADHs) are oxidoreductases catalyzing the reversible oxidation of alcohols to corresponding aldehydes or ketones accompanied by nicotinamide adenine dinucleotide (NAD) or nicotinamide adenine dinucleotide phosphate (NADP) as coenzyme. ADHs attract major scientific and industrial interest for the evolutionary perspectives, afforded by their wide occurrence in nature, and for their use in industrial synthesis. However, the low activity of ADHs under extremes of pH and temperature often limits their application. To obtain ADH with high activity, in this study, we used Bombyx mori alcohol dehydrogenases (BmADH) as foreign gene and constructed a recombinant integrative plasmid pJS700-BmADH. This pJS700-BmADH was transformed into Bacillus subtilis by double cross-over and produced an amylase inactivated mutant. The fusion protein containing BmADH was expressed on the spore surface and recognized by BmADH-specific antibody. We also assayed the alcohol dehydrogenase activity of the fusion protein together with the native BmADH at different pH and temperature levels, which indicated the recombinant enzyme exhibits activity over wider ranges of temperature and pH than its native form, perhaps due to the resistance properties of B. subtilis spores against adverse conditions

    [Modus legendi abbreviaturas] : [cum aliis tractatibus iuridicis]

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    Processus iudiciarius / Johannes Auerbach ; Tractatus praesumptionum / Johannes Auerbach ; Summa qualiter notarii debeant officium exercere / Dominicus de Visentina ; Tractatus notariatus / Dominicus de Visentina ; Defensorium iuris / Johannes Monachus ; Tractatus exceptionum / Innocentius IV. ; Tractatus praescriptionum / Dinus de Mugello ; De arbitris et arbitratoribus / Petrus Jacobus de Montepessulano ; Differentiae legum et canonum / Galvanus Salvianus de BononiaImpressum nach ISTCDalbanne and Droz, followed by CIBN, date to 1476 when Schilling was still at Basel (cf. BMC VIII (xxvii), and Goff to 1478 when Schilling had moved to Vienne. Polain assigned to Cologne or BaselErscheinungsjahr nach GW: 1476Werner von Schussenried is named as author of the Modus legendi in an acrostic in the text. The true author of the Defensorium iuris is Gerardus (or Gebhardus) de Rheinau (BSB-Ink
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