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Search Results: 1 - 10 of 194364 matches for " Gérard Luc Tavakilian "
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A New Genus Bifidunguiglenea gen. nov. Is Erected for the Species Glenea gestroi Gahan (Cerambycidae: Lamiinae: Saperdini)
Mei-Ying Lin, Gérard Luc Tavakilian
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0040768
Abstract: Bifidunguiglenea gen. nov. is erected for the species Glenea gestroi Gahan, 1894. Bifidunguiglenea gestroi (Gahan, 1894) comb. nov. is redescribed. The genitalia descriptions are reported for the first time and it is newly recorded from Thailand.
Novos cerambycidae (coleoptera) da cole??o Odette Morvan, Kaw, Guiana Francesa: III
Martins, Ubirajara R.;Galileo, Maria Helena M.;Tavakilian, Gérard L.;
Papéis Avulsos de Zoologia (S?o Paulo) , 2008, DOI: 10.1590/S0031-10492008002500001
Abstract: new cerambycidae (coleoptera) of the collection odette morvan, kaw, french guiana. new species described and figured of french guiana: oreodera mageia sp. nov. (acanthoderini; trestonia bilineata sp. nov. (onciderini); ischnolea odettae sp. nov. (desmiphorini) and icupima ampliata sp. nov. (hemilophini). plocaederus fragosoi (cerambycini) is recorded for french guiana.
Revis?o do gênero Polyrhaphis Audinet-Serville (Coleoptera, Cerambycidae, Lamiinae)
Santos-Silva, Antonio;Martins, Ubirajara R;Tavakilian, Gérard L;
Papéis Avulsos de Zoologia (S?o Paulo) , 2010, DOI: 10.1590/S0031-10492010003000001
Abstract: polyraphis audinet-serville, 1835, a genus belonging to the lamiinae, and distributed between mexico and south america, excluding chile and under latitude 35°s, is reviewed. three new species are described: p. baloupae, from french guiana; p. lanei, from brazil (amazonas and pará); p. peruana, from peru. two species are synonymyzed: p. testacea lane, 1965 (= p. gracilis bates, 1862) and p. paraensis [= p. papulosa (olivier, 1795)]. neotype to p. papulosa is designated. the authorship of p. horrida [= p. spinosa (drury, 1773)] is commented. cerambyx armatus voet (1778?) is considered an invalid name and lamia armiger sch?enherr, 1817 (= polyrhaphis armiger) the valid name of the species. polyrhaphis spinipennis laporte, 1840, is excluded of the fauna of colombia. new records: p. argentina lane, 1978, for s?o paulo state (brazil); p. batesi hovore & mccarty, 1998, for ecuador; p. belti hovore & mccarty, 1998 for ecuador and colombia; p. gracilis bates, 1862, for french guiana; and p. turnbowi hovore & mccarty, 1998, in doubt, for peru. key to the species of the genus is added.
Cellular Tree Classifiers
Gérard Biau,Luc Devroye
Computer Science , 2013,
Abstract: The cellular tree classifier model addresses a fundamental problem in the design of classifiers for a parallel or distributed computing world: Given a data set, is it sufficient to apply a majority rule for classification, or shall one split the data into two or more parts and send each part to a potentially different computer (or cell) for further processing? At first sight, it seems impossible to define with this paradigm a consistent classifier as no cell knows the "original data size", $n$. However, we show that this is not so by exhibiting two different consistent classifiers. The consistency is universal but is only shown for distributions with nonatomic marginals.
An Affine Invariant $k$-Nearest Neighbor Regression Estimate
Gérard Biau,Luc Devroye,Vida Dujmovic,Adam Krzyzak
Statistics , 2012,
Abstract: We design a data-dependent metric in $\mathbb R^d$ and use it to define the $k$-nearest neighbors of a given point. Our metric is invariant under all affine transformations. We show that, with this metric, the standard $k$-nearest neighbor regression estimate is asymptotically consistent under the usual conditions on $k$, and minimal requirements on the input data.
Do Adolescent Idiopathic Scoliosis (AIS) Neglect Proprioceptive Information in Sensory Integration of Postural Control?
Christine Assaiante, Sophie Mallau, Jean-Luc Jouve, Gérard Bollini, Marianne Vaugoyeau
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0040646
Abstract: Introduction It has been reported that AIS rely much more on ankle proprioception to control the amplitude of the balance control commands as compared to age-matched healthy adolescents. Our hypothesis was that AIS do not neglect proprioceptive information to control posture probably because of their vestibular deficits. We investigated the proprioceptive contribution to postural control in AIS which expresses spinal deformity during a crucial transitional period of ontogenesis. Methods 10 adolescents with idiopathic scoliosis (AIS) with moderate spinal deformity (10° < Cobb Angle >35°) and 10 control adolescents (CA) had to maintain vertical stance while very slow oscillations in the frontal plane (below the detection threshold of the semicircular canal system) were applied to the support with the eyes open and closed. Postural orientation and segmental stabilisation were analysed at head, shoulder, trunk and pelvis levels. Results Scoliosis did not affect vertical orientation control and segmental stabilization strategies. Vision improves postural control in both CA and AIS, which seem more dependent on visual cues than adults. Conclusions AIS as CA were unable to control efficiently their postural orientation on the basis of the proprioceptive cues, the only sensory information available in the EC situation, whereas in the same condition healthy young adults present no difficulty to achieve the postural control. This suggests that AIS as CA transitory neglect proprioceptive information to control their posture. These results and previous studies suggest the existence of different afferent pathways for proprioceptive information subserving different parts in sensory integration of postural control. We conclude that the static proprioceptive system is not affected by the idiopathic scoliosis, while the dynamic proprioceptive system would be mainly affected.
Bradykinin and adenosine receptors mediate desflurane induced postconditioning in human myocardium: role of reactive oxygen species
Sandrine Lemoine, Clément Buléon, René Rouet, Calin Ivascau, Gérard Babatasi, Massimo Massetti, Jean-Louis Gérard, Jean-Luc Hanouz
BMC Anesthesiology , 2010, DOI: 10.1186/1471-2253-10-12
Abstract: We recorded isometric contraction of human right atrial trabeculae hanged in an oxygenated Tyrode's solution (34 degrees Celsius, stimulation frequency 1 Hz). After a 30-min hypoxic period, desflurane 6% was administered during the first 5 min of reoxygenation. Desflurane was administered alone or with pretreatment of N-mercaptopropionylglycine, a reactive oxygen species scavenger, 8-(p-Sulfophenyl)theophylline, an adenosine receptor antagonist, HOE140, a selective B2 bradykinin receptor antagonist. In separate groups, adenosine and bradykinin were administered during the first minutes of reoxygenation alone or in presence of N-mercaptopropionylglycine. The force of contraction of trabeculae was recorded continuously. Developed force at the end of a 60-min reoxygenation period was compared (mean ± standard deviation) between the groups by a variance analysis and post hoc test.Desflurane 6% (84 ± 6% of baseline) enhanced the recovery of force after 60-min of reoxygenation as compared to control group (51 ± 8% of baseline, P < 0.0001). N-mercaptopropionylglycine (54 ± 3% of baseline), 8-(p-Sulfophenyl)theophylline (62 ± 9% of baseline), HOE140 (58 ± 6% of baseline) abolished desflurane-induced postconditioning. Adenosine (80 ± 9% of baseline) and bradykinin (83 ± 4% of baseline) induced postconditioning (P < 0.0001 vs control), N-mercaptopropionylglycine abolished the beneficial effects of adenosine and bradykinin (54 ± 8 and 58 ± 5% of baseline, respectively).In vitro, desflurane-induced postconditioning depends on reactive oxygen species production, activation of adenosine and bradykinin B2 receptors. And, the cardioprotective effect of adenosine and bradykinin administered at the beginning of reoxygenation, was mediated, at least in part, through ROS production.Anesthetic-induced postconditioning (PostC) is a phenomenon whereby a brief exposure of the myocardium to a volatile halogenated anesthetic, at the very onset of reperfusion, markedly reduces myocardial inju
The Major Y-Chromosome Haplogroup R1b-M269 in West-Europe, Subdivided by the Three SNPs S21/U106, S145/L21 and S28/U152, Shows a Clear Pattern of Geographic Differentiation  [PDF]
Gérard Lucotte
Advances in Anthropology (AA) , 2015, DOI: 10.4236/aa.2015.51003
Abstract: More than 2600 unrelated males from West-Europe were analysed by molecular hybridization experiments for the p49a,fTaq I polymorphisms. A total of 895 subjects (34%), belonging to haplogroup M269, were identified and further analysed for the three SNPs, S21/U106, S145/L21 and S28/U152; these three SNPs define the Northwest, West and South European sub-haplogroups, respectively. These haplogroups showed quite different frequency distribution patterns within West-Europe, with frequency peaks in Northern Europe, in Brittany in France and in Northern Italy/Southern France.
Exploration of the Face of the Turin Shroud. Pollens Studied by SEM Analysis  [PDF]
Gérard Lucotte
Archaeological Discovery (AD) , 2015, DOI: 10.4236/ad.2015.34014
Abstract: We studied by SEM-EDX analysis the pollens on the Face of the Turin Shroud. A total of ten pollen grains were found; they were photographed, characterised and analysed. Three of them (pollens p6, p7 and p10) belong to Ceratonia siliqua, the carob tree; one of them (pollen p1) belongs to Balanites aegyptiaca (the palm tree of the desert), and another one (pollen p9) belongs to Cercis siliquastrum (the Judean tree). These three plants have their geographical distributions in the Near-East; that is indicative of a Palestinian origin of the Turin Shroud. Two pollen grains (p3 and p4) belong to Myosotis ramosissima. Probably myositis flowers were deposited later on the Turin Shroud, as reverence for this venerable and symbolic object.
Skin Debris on the Face of the Turin Shroud: A SEM-EDX Analysis  [PDF]
Gérard Lucotte
Archaeological Discovery (AD) , 2016, DOI: 10.4236/ad.2016.42008
Abstract: Aim: We have studied the only found three skin debris (P1, P2 and P3) deposited on the Face area of our sample of the Turin Shroud. Methods: P1, P2 and P3 were explored by optical microscopy, by SEM and by EDX analysis. Results: All P1, P2 and P3 are true skin debris, as observed in optic and electronic microscopy; their elementary compositions show organic matter, plus a sulphur peak that corresponds to keratin. P1, P2 and P3 are constituted of layers of corneocytes; in P3, which is certainly a human skin debris, we can observe both the epidermis and some residual dermis.
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