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La détermination du sexe grâce à la méthode probabalistic diagnosis dans un environnement virtuel
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The hip bone is one of the most reliable indicators of sex in the human body due to the fact it is the most dimorphic bone. Probabilistic Sex Diagnosis (developed by Murailet al., 2005) is a method based on a worldwide hip bone metrical database and relies on the actual physical bone for analysis. Sex is determined by comparing specific measurements taken from each specimen using sliding calipers and computing the probability of the specimens being female or male. In forensic science it is sometimes not possible to sex a body due to corpse decay or injury. Skeletinization and dissection of a body is a laborious process and desecrates the body. The current study aimed to see if it was possible to virtually utilise the DSP method to avoid this process. Forty-nine innominate bones of unknown sex were obtained from ULB. Bones were analysed by two researchers using the manual DSP method and a good correlation was found between researchers. CT scans of available bones were analysed to obtain three-dimensional (3D) virtual models using a commercially available software (Amira, www.amiravis.com). Available models were imported into a customized software programme called lhpFusionBox (developed at ULB from the MAF open-source library). lhpFusionBox is an advanced musculo-skeletal software which includes many operations relevant to Biomechanics. It also enables distances to be measured via virtually- palpated bony landmarks. DSP measurements were then obtained from the located bony landmarks. There was 100% accuracy between the manual and virtual DSP analysis. To further test the method 30 virtual bones of known sex were analysed (researchers had no prior knowledge of sex before analysis). There was found to be a 97% accuracy rate with only one bone leading to a wrong determination. These
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RBINS Staff Publications
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A GIS-based methodology for creating 3D geological models in sedimentary environment: application to the subcrop of Brussels
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In order to meet the requirements established by the European Directive (2006/118/EC) on the groundwater protection, the Geological Survey of Belgium (GSB) has started a new Geographic Information System (GIS) project called Hydrobrux. The aim is to create a thorough three-dimensional geological model of the subcrop of Brussels. The latter will be used to produce a hydrogeological model of the Brussels Formation aquifer composed of sands and covering 126 km2 in the eastern part of the Brussels-Capital Region and subsequent deeper aquifers (Palaeocene and Upper Cretaceous). The GIS 3D model is built by superposition of interpolated surfaces, which represent the top surface of each modelled geological layers. Eleven top surfaces are generated independently and are based on the interpolation of 5169 points. This high density of information is provided by 2426 boreholes, water wells, outcrops, cone penetration tests (CPT) and other sources of stratigraphic data that were collected and structured in a relational database under Microsoft Access. The data were exported to ArcGIS for the geostatistics (2D mapping) and validation parts and subsequently to ArcScene for the construction and the visualisation of the 3D model.
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RBINS Staff Publications
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Prionus antonkozlovi n. sp. de Chine (Coleoptera, Cerambycidae, Prioninae)
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RBINS Staff Publications 2021
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Biology and fisheries of the spotted flounder (Citharus linguatula) caught by multiple gears with partial spatiotemporal overlaps
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Obtaining data to study fish biology can be a challenge if a stock is fished by a variety of gears with different effort units and different selectivity, particularly if these gears only partially overlap in space and time. In this work, we attempted to study the biology of the spotted flounder Citharus linguatula in the Patraikos Gulf and the adjacent central Ionian Sea (eastern Mediterranean) and to evaluate the current fisheries management. We characterized age composition and growth, length-at-maturity, and catch-perunit- effort (CPUE) of spotted flounder from the catches of bottom trawls, gillnets and trammel nets for the period autumn 2013–2014. Variation of fish total length, gonadosomatic index, hepatosomatic index and condition factor was analyzed using generalized additive models (GAMs) with regard to sex, date, fishing gear and depth.We also modeled CPUE fluctuations of each gear by date, depth, longitude and latitude using GAMs. Fish age ranged from 1 to 5 years. A slightly allometric growth was documented with females attaining larger sizes than males. Length-at-maturity was 163mm for females and 169mm for males. The seasonal change of gonad maturity stages and the gonadosomatic index indicated spawning in late summerautumn. Changes in length frequencies indicated that recruitment to the fisheries occurred in late springearly winter in shallow depth (<40 m). The catch composition of trawls and the CPUE model results suggested that the selectivity of this gear should be regulated to reduce catching immature individuals of spotted flounder. The results further indicated that the seasonal trawl closure of the Patraikos Gulf contributes to reduce catching juveniles.
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RBINS Staff Publications 2017
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Redescription of Cichlidogyrus tiberianus Paperna, 1960 and C. dossoui Douëllou, 1993 (Monogenea: Ancyrocephalidae), with special reference to the male copulatory organ
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The flatworms of the genus Cichlidogyrus Paperna, 1960 (Monogenea: Ancyrocephalidae) are gill parasites of freshwater fish, affecting predominantly the family Cichlidae. Cichlidogyrus tiberianus Paperna, 1960 and Cichlidogyrus dossoui Doue¨llou, 1993 are among the most widely distributed species of the genus, occurring in several African river basins and infecting many different host species, including the economically important Nile tilapia Oreochromis niloticus (Linnaeus) and redbreast tilapia Coptodon rendalli (Boulenger). Despite their wide distribution, C. tiberianus and C. dossoui have so far been studied only by light microscopy. In this paper they are redescribed on the basis of scanning electron microscopy of newly-collected material. The new material was obtained from redbreast tilapia caught in the Luapula River (D. R. Congo). The haptoral sclerites and genitalia are redescribed and illustrated in detail. Special attention is given to the complex morphology of the male copulatory organ.
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RBINS Staff Publications 2017
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Treeline and timberline dynamics on the northern and southern slopes of the Retezat Mountains (Romania) during the late glacial and the Holocene
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Abstract To investigate treeline and timberline dynamics in the Retezat Mountains (Romanian Carpathians), late glacial and Holocene sediment sequences from four lakes were studied. The south and north slopes of the mountain range were compared using two lakes from the north flank (Lake Brazi, 1740 m a.s.l. and Lake Gales, 1990 m a.s.l) and two from the south flank (Lake Lia, 1910 m a.s.l. and Lake Bucura, 2040 m a.s.l.). Macrofossil and stomata analyses were performed to assess changes in the local vegetation, supplemented by pollen, charcoal and loss-on-ignition analyses. Our results show that treeline reached Lake Brazi on the northern side during the late glacial (ca. 14,000 cal yr BP) and then Lake Gales between 11,000 and 10,800 cal yr BP. During the early Holocene the upper limit of closed forest, the timberline, reached and passed Lake Brazi and has stayed above it since, but it has never reached Lake Gales at 1990 m a.s.l. The expansion of Larix decidua in the late glacialand early Holocene around Lake Brazi is unique. Stomata and macrofossils of Abies alba are also more abundant in the northern records. On the southern flank, treeline reached Lake Lia at around 12,000 cal yr BP, and was either very close to or at the elevation of Lake Bucura between ca. 8600 and 3000 cal yr BP. Timberline reached Lake Lia at ca. 8000 cal yr BP, some 3000 years after Lake Brazi, only 170 m lower on the north slope. Local fire events delayed the advance of timberline around Lake Lia in the early Holocene in a dry continental climate. The surrounding forest was dominated by Picea abies with individuals of Pinus cembra and stands of P. mugo until about 3000 cal yr \BP\ when timberline retreated below the lake. Maximum elevation of timberline was attained between ca. 8000 and 3000 cal yr BP, after which it descended in response to climate cooling. Regional climate change appears to be the main driver of treeline dynamics, but it was modified by local climatic differences due to slope aspect. The first signs of human disturbance appeared ca. 4200 cal yr BP, when naturally open areas were used as alpine pastures. Human impact in the treeline ecotone, mainly burning and grazing, was intensified after ca. 2600 cal yr BP, contributing to the widening of the ecotone and the lowering of the timberline.
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RBINS Staff Publications 2017
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The pan-and-tilt hyperspectral radiometer system (PANTHYR) for autonomous satellite validation measurements – prototype design and testing
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RBINS Staff Publications 2019
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Pterosaur melanosomes support signalling functions for early feathers
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RBINS Staff Publications 2022
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Radial porosity profiles: a new bone histological method for comparative developmental analysis of diametric limb bone growth
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RBINS Staff Publications 2022
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Endocranial morphology of Liaoceratops yanzigouensis (Dinosauria: Ceratopsia) from Early Cretaceous Jehol Biota of Liaoning in China
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RBINS Staff Publications 2022
