Orfeo BELSPO Instutional Open Access Repository for Federal Organisation
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Inventaris van het archief van de FOD Financiën : Administratie der Thesaurie : Dienst Logistiek (1888-2010 (vnl. 1920-2010))
No full textDit archief van de FOD Financiën – Administratie der Thesaurie, dienst Logistiek (en dienst Organisatie) opent de deuren naar de coulissen van de Belgische schatkist tussen 1888 en 2010. Dienstnota’s, organigrammen, herstructureringsplannen, dossiers over mechanisatie, informatisering en gebouwenbeheer tonen hoe de Thesaurie midden in crisissen, hervormingsgolven en besparingsrondes haar werking telkens hertekent. Van de plannen van Louis Camu in de jaren 1930 tot de Copernicus- en Coperfinhervormingen: de evolutie naar een moderne administratie is hier stap voor stap te volgen. Een onmisbare bron voor historici, bestuurskundigen, archivarissen en iedereen die wil weten hoe het staatsapparaat echt functioneert.The records described in this inventory are held at the National Archives of Belgium (Brussels) (inventory code 510 – I 718).This inventory is the frozen published version dated 17-02-2025. For the dynamic inventory under active revision, including recent updates and additions, please consult our online search platform AGATHA. In AGATHA you can also place requests for the archival items you want to view in the reading room
Inventaris van het archief van de Grote Raad voor de Nederlanden te Mechelen : Reeks Procesdossiers in Eerste Aanleg : Nrs 1-500 (1457-1511)
No full textDe Grote Raad van Mechelen was eeuwenlang het hoogste gerechtshof van de Lage Landen en het toneel van macht, recht en intrige. Dit archief ontsluit duizenden fascinerende procesdossiers — van belastingruzies en machtsspelletjes tot misdrijven en opstanden. Een schatkamer voor wie wil zien hoe rechtspraak het kloppende hart vormde van de vroegmoderne samenleving.The records described in this inventory are held at the National Archives of Belgium (Brussels) (inventory code 510 - I 729).This inventory is the fixed published version dated 06-11-2025. For the dynamic inventory under active revision, including recent updates and additions, please consult our online search platform AGATHA. In AGATHA, you can also request the archival items you wish to consult in the reading room
Modeling of methyl hydroperoxide observations in urban and remote air over South Korea: Methylperoxy radical chemistry and inference of atmospheric methanediol
No full textMethyl hydroperoxide (MHP) is produced by the CH3O2 + HO2 reaction in the oxidation cascade of volatile organic compounds (VOCs). During KORUS-AQ (May–June 2016), aircraft observations over Seoul using chemical ionization mass spectrometry reported MHP concentrations exceeding 1 ppb in the planetary boundary layer, four times higher than simulated by the GEOS-Chem atmospheric chemistry model. We show that this discrepancy can be explained in part by the instrument's positive interference from methanediol (MD) under high-humidity conditions, where MD is produced in clouds by formaldehyde hydration. Including MD chemistry in GEOS-Chem increases the global formic acid source by 11\% but has otherwise minimal impact on the model chemistry. Observed MHP concentrations in the dry free troposphere are much less sensitive to MD interference and vary with the branching ratio of the CH3O2 reaction with HO2 versus NO, supporting current understanding of low-NO and high-NO chemical regimes for VOC oxidation
De gerechtelijke fotografie in de negentiende eeuw
No full textContribution by Paul Drossens on 19th-century forensic photography in the publication Early Gaze, released in conjunction with the exhibition of the same name at FOMU – Fotomuseum Antwerp, running from 24 October 2025 to 1 March 2026. The publication offers a compelling perspective on the origins and evolution of photography in 19th-century Belgium
New data products and tools available in Services for Spacecraft Operations support within the ESA Space Weather Service Network
Full text linkENFORCE: Expertise report ref. exp 469-472 (25/04/2024) - Macro & microscopic Wood ID
No full textApplication of environmental DNA and quantitative PCR to detect the presence of four invasive crayfish species in Brussels waterbodies (Belgium)
No full textEnvironmental DNA (eDNA) sampling has become an essential and sensitive detection method to monitor native and invasive species populations. In Europe, some crayfish are invasive and established populations can spread rapidly in freshwater environments. Tracking their presence (early detection) and distribution is difficult using live captures especially since setting traps is more time consuming and less cost effective. Therefore, the potential of eDNA assay as a monitoring tool is explored. Fifty locations in Brussels (Belgium) were sampled and tested for the presence of four invasive crayfish species (Procambarus clarkii, Procambarus virginalis, Faxonius limosus and Pontastacus leptodactylus). The present investigation aims at i) testing existing qPCR protocols and evaluating their suitability at detecting the targeted invasive crayfishes, ii) evaluating the eDNA assays reliability by comparing the results against live capture data iii) evaluating the advantages and disadvantages of eDNA assays vs live captures. Different qPCR protocols were tested against selectivity and sensitivity and two different filter protocols were applied on the field. From seven existing protocols four qPCR assays were selected to detect the presence of the targeted invasive crayfishes. At least two invasive species have been confirmed for five locations in Brussels using eDNA. The outcome of this study indicates an underrepresentation of the expected results (based on live capture data), caused by undersampling of the waterponds and inhibitory substances counteracting qPCR detection
ENFORCE: ReportExpertise ref. exp-505 (Piece 1), exp-506 (Piece 2), exp-507 (Piece 3) & exp-508 (Piece 4) - 6/5/2024
No full textHydrodynamic constraints on prey-capture performance in forward-striking snakes
No full textSome specialized aquatic snakes such as Natrix tessellata strike at fish by rapidly accelerating their head towards the prey with their mouth opened widely. This strategy is believed to be suboptimal as relatively high drag forces act on the open jaws and, therefore, probably limit strike speed. Moreover, the bow wave in front of the snake's jaws could push prey away from the mouth, thus potentially explaining the relatively low capture success observed in these animals (<20%). Here, we used laser-scan based computational fluid dynamics to test these potential constraints on prey-capture performance for N. tessellata. Our simulations showed that drag force indeed increases drastically for striking at a high gape angle. However, we estimated the overall cost in slowing down strike speed to be less pronounced due to the instationary dynamics of the system. In contrast to the expectations, forward displacement of prey was relatively limited (<13% of head length), and forceful collisions between prey and the leading edge of the jaw regularly occurred. However, our models showed that precise aiming by the snake was needed to reduce the chance of deviating the prey to a path bypassing the mouth. Our study also indicated several hydrodynamic advantages for snakes to strike at relatively large prey
Des maîtres-verriers et de leurs pratiques dans l’Angleterre du début du 19e siècle
Full text linkA propos de la contribution de Tony Benyon, « Some aspects of the transition to medievalism in English stained glass 1820-1840 », dans The Journal of Stained Glass, vol. XLIII (2019), Medievalism Special Issue, p. 153-175