Classification of homogeneous regions of vegetation cover in the State of Rio Grande do Sul, Brazil and its temporal dynamics, using AVHRR GIMMS and MODIS data sets

This study aimed to classify the homogeneous regions of vegetation cover, which occur in Rio Grande do Sul, formed by clustering of pixels with same pattern of temporal variability of the Normalized Difference Vegetation Index (NDVI) of AVHRR GIMMS and MODIS series and to compare their temporal dynamics. We use K means cluster analysis for defi ning homogeneous regions, based on the temporal variability of GIMMS (8 km spatial resolution) and MODIS (1 km spatial resolution) NDVI data sets, using monthly images mean from 2000 to 2008 (overlapping period); and we analyzed the annual pattern of NDVI. Accuracy assessment was done with Landsat images. The results show that the temporal variability of GIMMS and MODIS NDVI allows to delimit similar homogeneous regions in order to mapping the main vegetation cover. MODIS series shows a greater detail in the defi nition of the regions, but with compatibility with those generated by GIMMS. The temporal dynamics show a typical seasonal pattern, with variations of NDVI amplitude between the groups, that allow to monitor phenological changes. The deviations from calibration between times series are linear, which would facilitate a correction in order to construct a long synthetic time series for studies of land cover change

Genomics and epidemiology for gastric adenocarcinomas (GE4GAC): a Brazilian initiative to study gastric cancer

Abstract Gastric cancer (GC) is the fifth most common type of cancer worldwide with high incidences in Asia, Central, and South American countries. This patchy distribution means that GC studies are neglected by large research centers from developed countries. The need for further understanding of this complex disease, including the local importance of epidemiological factors and the rich ancestral admixture found in Brazil, stimulated the implementation of the GE4GAC project. GE4GAC aims to embrace epidemiological, clinical, molecular and microbiological data from Brazilian controls and patients with malignant and pre-malignant gastric disease. In this letter, we summarize the main goals of the project, including subject and sample accrual and current findings

26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3 - Meeting Abstracts - Antwerp, Belgium. 15–20 July 2017

This work was produced as part of the activities of FAPESP Research,\ud Disseminations and Innovation Center for Neuromathematics (grant\ud 2013/07699-0, S. Paulo Research Foundation). NLK is supported by a\ud FAPESP postdoctoral fellowship (grant 2016/03855-5). ACR is partially\ud supported by a CNPq fellowship (grant 306251/2014-0)

High levels of filamentous actin and apoptosis correlate with mast cell refractoriness under alloxan-evoked diabetes

Submitted by Sandra Infurna ([email protected]) on 2019-12-31T18:02:17Z No. of bitstreams: 1 EmilianoBarreto_etal_IOC_2006.pdf: 458212 bytes, checksum: e9aae2b07e337f975cfe1755124fd360 (MD5)Approved for entry into archive by Sandra Infurna ([email protected]) on 2019-12-31T18:13:22Z (GMT) No. of bitstreams: 1 EmilianoBarreto_etal_IOC_2006.pdf: 458212 bytes, checksum: e9aae2b07e337f975cfe1755124fd360 (MD5)Made available in DSpace on 2019-12-31T18:13:22Z (GMT). No. of bitstreams: 1 EmilianoBarreto_etal_IOC_2006.pdf: 458212 bytes, checksum: e9aae2b07e337f975cfe1755124fd360 (MD5) Previous issue date: 2006Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Fisiologia e Farmacodinâmica. Laboratório de Inflamação. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Fisiologia e Farmacodinâmica. Laboratório de Inflamação. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Fisiologia e Farmacodinâmica. Laboratório de Inflamação. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Imunologia. Laboratório de Imunoparasitologia. Rio de Janeiro, RJ, Brasil.Universidade do Estado do Rio de Janeiro. Departamento de Farmacologia. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Fisiologia e Farmacodinâmica. Laboratório de Inflamação. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Fisiologia e Farmacodinâmica. Laboratório de Inflamação. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Fisiologia e Farmacodinâmica. Laboratório de Inflamação. Rio de Janeiro, RJ, Brasil.Mast cell number and reactivity were shown to be down-regulated under diabetic conditions. Since the balance between globular and filamentous actin plays a pivotal role in the activity of secretory cells, we investigated whether an imbalance in that system could underlie the hyporesponsiveness of mast cells in diabetes. The apoptotic state was also evaluated. By means of rhodamine/phalloidine staining of F-actin, we noted that diabetic mast cells exhibited an increase in fluorescence intensity and reduction in cellular size, when compared with cells from normal animals, in parallel with elevation in the percentage of cells developing apoptosis. The levels of Bax, a pro-apoptotic member of Bcl-2 family, appeared increased at baseline in mast cells from diabetic rats compared with normal cells. These phenomena correlated with reduction in histamine and PGD2 release following antigen challenge in vitro. The steroid antagonist RU 486 abolished the reduction of histamine secretion from diabetic mast cells. We conclude that hyporesponsiveness of mast cells noted in diabetes may be accounted for by reduction in actin filament plasticity, in clear association with the rise in the percentage of cells undergoing apoptosis. In addition, the refractoriness of diabetic mast cells to antigen in vitro seems to be dependent on glucocorticoids

Checklist das esp\ue9cies de Euphorbiaceae Juss. ocorrentes no semi-\ue1rido pernambucano, Brasil

É apresentado o check-list das Euphorbiaceae da região semi-árida do Estado de Pernambuco (zona da Caatinga, subzonas do Agreste e do Sertão), nordeste do Brasil. Foram estudados os materiais oriundos das coletas realizadas durante os anos de 1997-1999 e aqueles depositados nos Herbários locais (IRA, PEUFR, TASH e UFP). Foram registradas 89 espécies, distribuídas em 22 gêneros, sendo Croton L., Cnidoscolus Pohl, Dalecliampia Plum, ex L., Euphorbia L. e Phyllanthus L. os melhor representados, com 21, 7, 6, 6 e 6 táxons, respectivamente. Caperonia castanefolia A. St.-Hil, Euphorbia phosphorea Mart, e Rotnanoa tamnoides (A. Juss.) Radcl.-Sm. são novas citações para a flora pernambucana.<br>This paper presents a checklist of Euphorbiaceae of the semi-arid area - Caatinga zone, subzones Agreste and Sertão - in Pernambuco State (Northeast of Brazil). Materials from field work done from 1997 to 1999 and from the local Herbaria (IRA, PEUFR, TASH and UFP), were studied. Up to now, 89 species, distributed within 22 genera have been listed. Croton L. (21), Cnidoscolus Pohl (7), Dalecliampia Plum, ex L. (6), Euphorbia L. (6) and Phyllanthus L. (6), were the most important genera as regards number of species. Caperonia castanefolia A. St.-Hil, Euphorbia phosphorea Mart, and Rotnanoa tamnoides (A. Juss.) Radcl.-Sm. are new records for Pernambuco State

High incidence of rhinovirus infection in children with community‐acquired pneumonia from a city in the Brazilian pre‐Amazon region

Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão. Grant Number: #PPSUS‐03384/13Universidade CEUMA. Programa de Pós‐Graduação. São Luís, MA, Brasil.Universidade CEUMA. Programa de Pós‐Graduação. São Luís, MA, Brasil.Universidade CEUMA. Programa de Pós‐Graduação. São Luís, MA, Brasil.Universidade CEUMA. Programa de Pós‐Graduação. São Luís, MA, Brasil.Universidade CEUMA. Programa de Pós‐Graduação. São Luís, MA, Brasil.Universidade CEUMA. Programa de Pós‐Graduação. São Luís, MA, Brasil.Universidade CEUMA. Programa de Pós‐Graduação. São Luís, MA, Brasil.Universidade CEUMA. Programa de Pós‐Graduação. São Luís, MA, Brasil.Universidade CEUMA. Programa de Pós‐Graduação. São Luís, MA, Brasil.Hospital Dr. Juvêncio Mattos Maternidade Benedito Leite. Complexo Hospitalar Materno Infantil do Maranhão. São Luís, MA, Brasil.Universidade CEUMA. Programa de Pós‐Graduação. São Luís, MA, Brasil.Hospital da Criança Dr. Odorico de Amaral Matos. São Luís, MA, Brasil.Hospital da Criança Dr. Odorico de Amaral Matos. São Luís, MA, Brasil.Hospital da Criança Dr. Odorico de Amaral Matos. São Luís, MA, Brasil.Hospital da Criança Dr. Odorico de Amaral Matos. São Luís, MA, Brasil.Hospital da Criança Dr. Odorico de Amaral Matos. São Luís, MA, Brasil.Universidade Federal do Maranhão. Hospital Universitário. São Luís, MA, Brasil.Ministério da Saúde. Secretaria de Vigilância em Saúde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.Ministério da Saúde. Secretaria de Vigilância em Saúde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.Universidade CEUMA. Mestrado em Meio Ambiente. São Luís, MA, Brasil.Universidade CEUMA. Programa de Pós‐Graduação. São Luís, MA, Brasil.Community‐acquired pneumonia (CAP) is the leading cause of child death worldwide. Viruses are the most common pathogens associated with CAP in children, but their incidence varies greatly. This study investigated the presence of respiratory syncytial virus (RSV), adenovirus, human rhinovirus (HRV), human metapneumovirus (HMPV), human coronavirus (HCoV‐OC43 and HCoV‐NL63), and influenza A virus (FluA) in children with CAP and the contributing risk factors. Here, children with acute respiratory infections were screened by pediatrics; and a total of 150 radiographically‐confirmed CAP patients (aged 3 months to 10 years) from two clinical centers in Sao Luis, Brazil were recruited. Patient's clinical and epidemiological data were recorded. Nasopharyngeal swab and tracheal aspirate samples were collected to extract viral nucleic acid. RSV, adenovirus, rhinovirus, FluA, HMPV, HCoV‐OC43, and HCoV‐NL63 were detected by real‐time polymerase chain reaction. The severe CAP was associated with ages between 3 and 12 months. Viruses were detected in 43% of CAP patients. Rhinovirus infections were the most frequently identified (68%). RSV, adenovirus, FluA, and coinfections were identified in 14%, 14%, 5%, and 15% of children with viral infection, respectively. Rhinovirus was associated with nonsevere CAP (P = .014); RSV, FluA, and coinfections were associated with severe CAP (P < .05). New strategies for prevention and treatment of viral respiratory infections, mainly rhinovirus and RSV infections, are necessary

Estudo comparativo in vitro da resistência ao cisalhamento da colagem e do índice de remanescente adesivo entre os compósitos Concise e Fill Magic A in vitro comparative stuabout shear bond strength and adhesive remnant index of the Concdy ise and Fill Magic composites

OBJETIVO: comparar a resistência ao cisalhamento da colagem e o Índice de Remanescente Adesivo (IRA) entre os compósitos Concise e Fill Magic Orthodontic. METODOLOGIA: a amostra consistiu de 24 incisivos inferiores permanentes bovinos divididos em dois grupos. No primeiro grupo foram colados 12 braquetes com o compósito Concise e no segundo grupo 12 com o compósito Fill Magic Orthodontic. Foi feito o ensaio de cisalhamento e a avaliação do IRA de toda a amostra. RESULTADO E CONCLUSÃO: não foram encontradas diferenças estatísticas significantes entre as colagens, nos dois itens avaliados.<br>AIM: to compare the shear bond strength and adhesive remnant index (IRA) between the composites Concise and Fill Magic Orthodontic. METHODS: the sample consisted of 24 cattle permanent low incisors divided in two groups. In the first group 12 brackets were bonded with the Concise composite and in the second group 12 with the Fill Magic Orthodontic composite. The tests of the shear and the evaluation of the ARI were developed with the whole sample. RESULTS AND CONCLUSION: there were not significant statistic differences between the composites in the two evaluated items