First measurement of the underlying event activity at the LHC with √ = 0.9 TeV

A measurement of the underlying activity in scattering processes with pT scale in the GeV region is performed in proton-proton collisions at √ = 0.9 TeV, using data collected by the CMS experiment at the LHC. Charged particle production is studied with reference to the direction of a leading object, either a charged particle or a set of charged particles forming a jet. Predictions of several QCD-inspired models as implemented in PYTHIA are compared, after full detector simulation, to the data. The models generally predict too little production of charged particles with pseudorapidity {pipe}η{pipe} < 2, pT > 0.5 GeV/c, and azimuthal direction transverse to that of the leading object. © 2010 CERN for benefit of the CMS collaboration.

First report of Oidium baccharidis on Baccharis trimera in Brazil

Powdery mildew disease was observed on Baccharis trimera in Brazil in January, 2009. Based on the morphological characters, the pathogen was identified as an Oidium baccharidis. This is the first report of this fungus causing powdery mildew on Baccharis in Brazil. © Australasian Plant thology ociety 2010.

First defection of the equine herpesvirus 1 neuropathogenic variant in Brazil

This report describes the first detection of an equine herpesvirus 1 (EHV-1) neuropathogenic variant (G 2254/D 752) in Brazil from a case of fatal equine herpesvirus myeloencephalopathy (EHM) in a mare. The results of nucleotide sequencing of the EHV-1 ORF30 gene showed that two other Brazilian EHV-1 isolates from EHM cases are representatives of the non-neuropathogenic variant (A 2254/N 752), suggesting that other unidentified factors are probably also involved in the neuropathogenicity of EHV-1 in horses. These findings will contribute to the epidemiological knowledge of EHV-1 infection in Brazil.

First report of Lasiodiplodia theobromae causing stem rot disease of begonia (Begonia x elatior hort.) in Brazil

Lasiodiplodia theobromae was found causing stem rot on commercial production of Begonia x elatior in São Paulo, Brazil. Illustrations, morphological and molecular description are provided. Based on the morphology, this fungus was recognized as L. theobromae. However, L. theobromae has high similarity with other Lasiodiplodia species, some of which are not possible to be separated by morphological characters. Molecular identification of the fungus isolated from the infected tissues was conducted. The strain from begonia clustered with other isolates of L. theobromae. This is the first report of the occurrence of L. theobromae on B. elatior. © 2012 Australasian Plant Pathology Society Inc.

First record of leucospis signifera bouček, 1974 (Insecta: Hymenoptera: Leucospidae) in the São Paulo State, Brazil

The present note extends the geographic range of Leucospis signifera Bouček, 1974 farther to the Northeast, reaching the State of São Paulo, based on the examination of four females collected at Jataí Ecological Station, municipality of Luiz Antônio, São Paulo State, Brazil. The present finding indicates that L. signifera is associated with dry ecosystems, at least in part of its geographic distribution. © 2012 Check List and Authors.

El comercio exterior latinoamericano en el primer semestre de 1958 = Latin American foreign trade in the first half of 1958

Incluye Bibliografía

First record of chilodonella hexasticha (ciliophora: Chilodonellidae) in brazilian cultured fish: A morphological and pathological assessment

Chilodonelids are small ciliated protozoans found worldwide and can be dangerous in culture conditions. This study presents morphometric data on the ciliate Chilodonella that is found in cultured Nile tilapia (Oreochromis niloticus), native bait fish tuvira (Gymnotus aff. inaequilabiatus) and native pacu (Piaractus mesopotamicus) and includes a histopathological assessment of the changes that occur in the pacu. For parasitic diagnosis, skin and gill samples were scraped onto slides, dried at room temperature, stained with Giemsa or impregnated with silver nitrate, and the measurements were obtained from photomicrographs. In the diseased pacu, the first gill arch was collected and fixed in a 10% buffered formalin solution for histopathological analysis. Parasite specimens from the different collection sites were identified morphologically as C. hexasticha Kiernik (1909). Diseased fish exhibited depigmentation, skin ulceration, scale loss, excessive mucus production and gill lesions. Histopathological analysis of pacu gills displayed epithelial proliferation with mononuclear inflammatory infiltrate, hemorrhages, and scattering necrosis. In Brazilian-farmed fish this is the first record of C. hexasticha, which has great pathogenic potential in cultured freshwater species. In addition, two new hosts are presented. © 2012 Elsevier B.V.

On the first anniversary of the death of José Medina Echavarría

Includes bibliography

First record of Austroleon dispar Banks, 1909 (Neuroptera: Myrmeleontidae) from Brazil

The present note extends the geographic range of Austroleon dispar Banks, 1909 to Brazil based on the examination of three females and one male collected in the Estação Ecológica Jataí, Luiz Antônio, São Paulo. The present finding indicates that A. dispar is associated with dry ecosystems, at least in part of its geographic distribution. © 2013 Check List and Authors.

Documentos presentados al Trigésimo Primer Período de Sesiones de la Comisión = Documents presented at the Thirty-first Session of the Commission

Incluye Bibliografía