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RISS 인기검색어
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- 저자 : Bonnin, Jean-Marie (검색결과 5 건)
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MR Imaging of the Perihepatic Space
Bonnin Angèle,Durot Carole,Djelouah Manel,Dohan Anthony,Arrivé Lionel,Rousset Pascal,Hoeffel Christine 대한영상의학회 2021 Korean Journal of Radiology Vol.22 No.4
The perihepatic space is frequently involved in a spectrum of diseases, including intrahepatic lesions extending to the liver capsule and disease conditions involving adjacent organs extending to the perihepatic space or spreading thanks to the communication from intraperitoneal or extraperitoneal sites through the hepatic ligaments. Lesions resulting from the dissemination of peritoneal processes may also affect the perihepatic space. Here we discuss how to assess the perihepatic origin of a lesion and describe the magnetic resonance imaging (MRI) features of normal structures and fluids that may be abnormally located in the perihepatic space. We then review and illustrate the MRI findings present in cases of perihepatic infectious, tumor-related, and miscellaneous conditions. Finally, we highlight the value of MRI over computed tomography.
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Dessandier, Pierre-Antoine,Bonnin, Jé,rô,me,Malaizé,, Bruno,Lambert, Clé,ment,Tjallingii, Rik,Warden, Lisa,Sinninghe Damsté,, Jaap S.,Kim, Jung-Hyun Elsevier 2018 Palaeogeography, palaeoclimatology, palaeoecology Vol.496 No.-
<P><B>Abstract</B></P> <P>We analyzed a 10-m sediment core retrieved at 82 m water depth off the coast of the Tagus River (Western Iberian Margin, Portugal) to investigate a linkage between variations in benthic foraminiferal assemblages and Tagus River discharge over the last 5700 years. Benthic foraminiferal assemblages were studied at high resolution in combination with the stable carbon and oxygen isotopic composition of fossil shells of <I>Nonion scaphum</I>, bulk and molecular organic matter properties (TOC, TN, C/N ratio, δ<SUP>13</SUP>C<SUB>TOC</SUB>, δ<SUP>15</SUP>N<SUB>bulk</SUB>, and BIT index), magnetic susceptibility, and XRF analyses. Three periods of environmental changes were identified: 1) high Tagus River discharge in 5750–2200 calendar year before present (cal yr BP), 2) lower discharge characterized by intense upwelling conditions (2250–1250 cal yr BP), and 3) both intense upwelling and Tagus River discharge (1250 cal yr BP-present). The data reveal alternating intense upwelling periods, as shown by the dominance of <I>Cassidulina carinata</I>, <I>Valvulineria bradyana</I>, or <I>Bulimina marginata</I>, whereas periods of increased river discharge are indicated by increase of <I>N. scaphum</I>, <I>Ammonia beccarii</I>, and <I>Planorbulina mediterranensis</I>. The Tagus River discharge was the strongest during the first period, transporting riverine material further offshore and preventing the establishment of a mud belt on the mid-shelf (around 100 m depth). During the second period, a decrease in Tagus River discharge favored the formation of the Tagus mud belt and strongly influenced the benthic environment by creating an organic matter stock. During the third period, intense upwelling and increased Tagus River discharge were recorded by benthic foraminiferal distribution, with an increase of terrestrial elements present in the mud belt. Furthermore, our results showed that variations in benthic foraminiferal assemblages corresponded to the well-known climatic periods in the study area, such as the Roman Period, the Dark Ages, the Medieval Warm Period, and the Little Ice Age. Our study strongly suggests that benthic foraminiferal assemblages can be used as a bio-indicator to trace the influence of past river discharge.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Benthic foraminifera allow the reconstruction of past Tagus River discharges. </LI> <LI> Three different periods of environmental changes have been identified. </LI> <LI> Major change is due to the Tagus mud belt onset at around 2000 yr BP. </LI> <LI> Upwelling active periods are linked with positive phases of NAO. </LI> <LI> Tagus River discharges are associated with negative phases of NAO. </LI> </UL> </P>
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Mobile Data Offloading: A Host-Based Distributed Mobility Management Approach
Jong-Hyouk Lee,Singh, Kamal Deep,Bonnin, Jean-Marie,Sangheon Pack IEEE 2014 IEEE internet computing Vol.18 No.1
<P>The increasing use of mobile devices has resulted in an explosion in mobile Internet traffic. To cope with this growth, mobile network architectures are becoming flatter, and IP mobility support protocols must evolve along with them. The authors propose an IP mobility support protocol that doesn't rely on a single mobility anchor, but rather uses distributed mobility anchors to overcome existing protocols' limitations while providing selective data offloading. They highlight their protocol's main features and strengths through qualitative comparisons and simulations.</P>
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Kim, W.J.,Palancher, H.,Ryu, H.J.,Park, J.M.,Nam, J.M.,Bonnin, A.,Honkimaki, V.,Charollais, F.,Lemoine, P. Elsevier Sequoia 2014 Journal of Alloys and Compounds Vol.589 No.-
The coating of silicide or nitride layers on U-7wt%Mo or U-7wt%Mo-1wt%Ti particles has been proposed for the minimization of the interaction phase growth in U-Mo/Al dispersion fuel during irradiation. Out-of-pile annealing tests show reduced inter-diffusion by forming silicide or nitride protective layers on U-Mo and U-Mo-Ti particles. To characterize the constituent phases of the coated layers on U-Mo and U-Mo-Ti particles and the interaction phases of coated U-Mo and U-Mo-Ti particle dispersed Al matrix fuel, synchrotron X-ray diffraction experiments have been performed. It was identified that silicide coating layers consisted mainly of U<SUB>3</SUB>Si<SUB>5</SUB> and U<SUB>4</SUB>Mo(Mo<SUB>x</SUB>Si<SUB>1-x</SUB>)Si<SUB>2</SUB>, and nitride coating layers were composed of mainly UN and U<SUB>4</SUB>N<SUB>7</SUB>. The interaction phases obtained after annealing of coated U-Mo and U-Mo-Ti particle dispersion samples were identical to those found in U-Mo/Al-Si and U-Mo/Al systems. Nitride-coated particles showed less interaction formation than silicide-coated particles after annealing at 580<SUP>o</SUP>C for 1h owing to the higher susceptibility to breakage of the silicide coating layers during hot extrusion.
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