A Distinctive New Species Of Ouratea (ochnaceae) From The Jalapão Region, Tocantins, Brazil

Ouratea acicularis R. Chacon & K. Yamamoto (Ochnaceae), a new species from the recently created Estação Ecológica Serra Geral do Tocantins, Jalapão region, Brazil, is described. Ouratea acicularis appears to be most closely allied to O. oleifolia (A. Saint-Hilaire) Engler. Both species share a pubescent indumentum on the young branches, leaf surfaces, inflorescence axes, and outer surface of the flower buds, as well as revolute leaves and acute flower buds. Ouratea acicularis is unique in the genus in its aciculate leaf blade, at least 4 times narrower than in O. oleifolia, with a strongly revolute margin that conceals the abaxial leaf surface except for the midrib, as well as its inconspicuous secondary venation and narrower flower buds. Anatomically, O. acicularis differs from other previously studied species of Ouratea Aublet in that the cells of the adaxial epidermis have an hourglass-shaped lumen, pericellular forked hairs fused at the base, an unusually large cap of fibers and sclereids above the collateral vascular bundles, and in the predominantly 2-layered chlorenchyma. The stems of O. acicularis are noteworthy for the conspicuous secretory cavities of the cortex and secondary xylem, in which fibers and vessel members predominate.183397404Arruda, M.B., von Behr, M., Introdução (2002) Jalapão: Expedição Científica e Conservacionista, pp. 11-12. , Pp, M. B. Arruda & M. von Behr editors, IBAMA. BrasíliaBarroso, G.M., Morin, M.P., Peixoto, A.L., Ichaso, C.L.F., Frutos e Sementes (1999) Morfologia Aplicada à Sistemáticas de Dicotiledôneas, , Universidade Federal de Viçosa, Minas Gerais, BrazilBaum, H., Die Frucht von Ochna multiflora DC., ein Fall ökologischer Apokarpie. (1951) Oesterr. Bot. Z, 98 (4), pp. 388-395Engler, A. 1876. Ochnaceae. Pp. 301-332, pl. 62-77 in C. F. P. Martius & I. Urban (editors). Flora Brasiliensis 12(2)Guédès, M. & C. Sastre. 1981. Morphology of the gynoecium and systematic position of the Ochnaceae. Bot. J. Finn. Soc. 82: 121-138IUCN. 2001. IUCN Red Uist Categories and Criteria Version 3.1. Prepared by the IUCN Species Survival Commission. IUCN, Gland, Switzerland, and Cambridge, United KingdomMaguire, B., Steyermark, J.A., Ouratea (Ochnaceae) in Guyana and adjacent Amazonian hvlea (1989) Mem. New York Bot. Gard, 51, pp. 56-102Mittermeier, R.A., Myers, N., Gil, P.R., Mittermeier, C.G., (1999) Hotspots: Earth's Biologically Richest and Most Endangered Terrestrial Ecoregions, , Conservation International, Arlington, Virginia, and CEMEX, HoustonProença, C. E. B., A. B. Sampaio, L. C. Milhomens, L. H. Soares e Silva, M. F. Simon, P. L. Simpson Jr. & R. Farias. 2002. Relatório da botânica. Pp. 21-28 in M. B. Arruda & M. von Behr (editors), Jalapão: Expedição Científica e Conservacionista. IBAMA, BrasíliaMittermeier, R.A., Myers, N., Gil, P.R., Mittermeier, C.G., Singer, R.F., Gomes, B.M., Pleonotoma orientalis (Bignonieae, Bignoniaceae): Expanded description, distribution, and a new variety of a poorly known species (2007) Edinburgh J. Bot, 64, pp. 17-23Reis, M. L., D. C. Coelho, D. de F. Pereira. I. H. Carvalho, M. L. de A. Nunes, M. F. Simon & V. da S. Braz. 2002. Relatório da zoologia. Pp. 29-44 in M. B. Arruda & M. von Behr (editors), Jalapão: Expedição Científica e Conservacionista. IBAMA, BrasíliaSastre, C., Studies on the Flora of the Guianas 34. Synopsis generis Ouratea Aublet (Ochnaceae) (1988) Bull. Mus. Natl. Hist. Nat., B, Adansonia, 1, pp. 47-67Sastre, C., New Ouratea species (Ochnaceae) from Venezuela and adjacent countries (2001) Novon, 11, pp. 105-118Scariot, A.O., Cavalcanti, T.B., Sevilha, A.C., Sampaio, A.B., Carvalho-Silva, M., Pereira-Silva, G., (2002) Flora e Vegetação do Entomo do Parque Estadual do Jalapão (TO): Relatório de Atividades, , EMBRAPA, BrasíliaSolereder, H., (1908) Systematic Anatomy of the Dicotyledons, , Clarendon Press, OxfordSpujt, R.W., A systematic treatment of fruit types (1994) Mem. New York Bot. Gard, 70, pp. 1-182Tieghem, van, P., Sur les Ochnacées. (1902) Ann. Sci. Nat., Bot, 16, pp. 161-416Whitefoord, C., Eight new species of Ouratea (Ochnaceae) from Mesoamerica (1992) Novon, 2, pp. 274-281Yamamoto, K. 1989. Morfologia, Anatomia e Sistemática do Gênero Ouratea Aubl.: Levantamento Preliminar de Características de Importância Taxonômica e Avaliação das Classificações Vigentes. Dissertação de Mestrado, Programa de Pós Graduação em Biologia Vegetal, Universidade Estadual de Campinas, Campinas, Brasil_. 1995. Estudos Taxonômicos Sobre Ouratea parviflora (DC.) Baill. (Ochnaceae) e Espécies Afins Ocorrentes em Floresta Atlântica nas Regiões Sudeste e Sul do Brasil. Ph.D. Thesis (unpubl.), Universidade Estadual de Campinas, Brazi

Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in √s = 7 TeV pp collisions with the ATLAS detector

A search for the direct production of charginos and neutralinos in final states with three electrons or muons and missing transverse momentum is presented. The analysis is based on 4.7 fb−1 of proton–proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with Standard Model expectations in three signal regions that are either depleted or enriched in Z-boson decays. Upper limits at 95% confidence level are set in R-parity conserving phenomenological minimal supersymmetric models and in simplified models, significantly extending previous results

Jet size dependence of single jet suppression in lead-lead collisions at sqrt(s(NN)) = 2.76 TeV with the ATLAS detector at the LHC

Measurements of inclusive jet suppression in heavy ion collisions at the LHC provide direct sensitivity to the physics of jet quenching. In a sample of lead-lead collisions at sqrt(s) = 2.76 TeV corresponding to an integrated luminosity of approximately 7 inverse microbarns, ATLAS has measured jets with a calorimeter over the pseudorapidity interval |eta| < 2.1 and over the transverse momentum range 38 < pT < 210 GeV. Jets were reconstructed using the anti-kt algorithm with values for the distance parameter that determines the nominal jet radius of R = 0.2, 0.3, 0.4 and 0.5. The centrality dependence of the jet yield is characterized by the jet "central-to-peripheral ratio," Rcp. Jet production is found to be suppressed by approximately a factor of two in the 10% most central collisions relative to peripheral collisions. Rcp varies smoothly with centrality as characterized by the number of participating nucleons. The observed suppression is only weakly dependent on jet radius and transverse momentum. These results provide the first direct measurement of inclusive jet suppression in heavy ion collisions and complement previous measurements of dijet transverse energy imbalance at the LHC.Comment: 15 pages plus author list (30 pages total), 8 figures, 2 tables, submitted to Physics Letters B. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2011-02

Physical activity attenuates the influence of FTO variants on obesity risk: A meta-analysis of 218,166 adults and 19,268 children

Background: The FTO gene harbors the strongest known susceptibility locus for obesity. While many individual studies have suggested that physical activity (PA) may attenuate the effect of FTO on obesity risk, other studies have not been able to confirm this interaction. To confirm or refute unambiguously whether PA attenuates the association of FTO with obesity risk, we meta-analyzed data from 45 studies of adults (n = 218,166) and nine studies of children and adolescents (n = 19,268). Methods and Findings: All studies identified to have data on the FTO rs9939609 variant (or any proxy [r2>0.8]) and PA were invited to participate, regardless of ethnicity or age of the participants. PA was standardized by categorizing it into a dichotomous variable (physically inactive versus active) in each study. Overall, 25% of adults and 13% of children were categorized as inactive. Interaction analyses were performed within each study by including the FTO×PA interaction term in an additive model, adjusting for age and sex. Subsequently, random effects meta-analysis was used to pool the interaction terms. In adults, the minor (A-) allele of rs9939609 increased the odds of obesity by 1.23-fold/allele (95% CI 1.20-1.26), but PA attenuated this effect (pinteraction= 0.001). More specifically, the minor allele of rs9939609 increased the odds of obesity less in the physically active group (odds ratio = 1.22/allele, 95% CI 1.19-1.25) than in the inactive group (odds ratio = 1.30/allele, 95% CI 1.24-1.36). No such interaction was found in children and adolescents. Concl

Measurement of event-shape observables in Z→ℓ+ℓ− events in pp collisions at √ s=7 TeV with the ATLAS detector at the LHC

Event-shape observables measured using charged particles in inclusive $Z$-boson events are presented, using the electron and muon decay modes of the $Z$ bosons. The measurements are based on an integrated luminosity of $1.1 {\rm fb}^{-1}$ of proton--proton collisions recorded by the ATLAS detector at the LHC at a centre-of-mass energy $\sqrt{s}=7$ TeV. Charged-particle distributions, excluding the lepton--antilepton pair from the $Z$-boson decay, are measured in different ranges of transverse momentum of the $Z$ boson. Distributions include multiplicity, scalar sum of transverse momenta, beam thrust, transverse thrust, spherocity, and $\mathcal{F}$-parameter, which are in particular sensitive to properties of the underlying event at small values of the $Z$-boson transverse momentum. The Sherpa event generator shows larger deviations from the measured observables than Pythia8 and Herwig7. Typically, all three Monte Carlo generators provide predictions that are in better agreement with the data at high $Z$-boson transverse momenta than at low $Z$-boson transverse momenta and for the observables that are less sensitive to the number of charged particles in the event.Comment: 36 pages plus author list + cover page (54 pages total), 14 figures, 4 tables, submitted to EPJC, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2014-0

Novel Loci for Adiponectin Levels and Their Influence on Type 2 Diabetes and Metabolic Traits : A Multi-Ethnic Meta-Analysis of 45,891 Individuals

J. Kaprio, S. Ripatti ja M.-L. Lokki työryhmien jäseniä.Peer reviewe