526 research outputs found
Utilização de óleo essencial de noni no controle fitossanitário de Colletotrichum gloeosporioides em plantas de Mangifera indica
The use of essential oils in agriculture as botanical insecticides has been used as an option in the control of diseases and pests, with the least possible impact on the ecosystem. Anthracnose is the main disease in mango culture, and can cause damage to fruit productivity and quality. The objective of this work was to evaluate the potential of noni essential oil (Morinda citrifolia L.) in the control of phytopathogens in plants of Mangifera indica. From the isolation of lesions of mango plants, the phytopathogenic fungus was obtained. The essential oil was removed from ripe noni fruits. In vitro bioassays were performed by testing different concentrations of essential oil. For the phytotoxicity test, five different concentrations of essential oil were used. The preventive control test was installed by applying by means of a manual spray. The curative test was also performed. The essential oil of noni showed an inhibitative effect on the growth of the fungus C. gloeosporioides in vitro. Phytotoxicity symptoms were observed in mango leaves at noni oil doses greater than 1.5%. The preventive application was more efficient than the curative for the control of anthracnose in mango plants.O uso de óleos essenciais na agricultura como inseticidas botânicos, tem sido usado como uma opção no controle de doenças e pragas, com menor impacto possível sobre o ecossistema. A antracnose é a principal doença na cultura da manga, podendo causar prejuízos na produtividade e qualidade dos frutos. O objetivo desse trabalho foi avaliar o potencial do óleo essencial de noni (Morinda citrifolia L.) e no controle de fitopatógenos em plantas de Mangifera indica. A partir do isolamento de lesões de plantas de manga foi obtido o fungo fitopatogênico. O óleo essencial foi retirado a partir de frutos maduros de noni. Os bioensaios in vitro foram realizados testando-se diferentes concentrações do óleo essencial. Para o teste de fitotoxicidade foi utilizado cinco concentrações diferentes de óleo essencial. O teste de controle preventivo foi instalado aplicando-se por meio de um borrifador manual. Também foi realizado o teste curativo. O óleo essencial de noni apresentou efeito inibitório no crescimento do fungo C. gloeosporioides in vitro. Os sintomas de fitotoxicidade foram observados nas folhas de manga em doses de óleo de noni maior que 1,5%. A aplicação preventiva foi mais eficiente que a curativa para o controle de antracnose em plantas de manga
ACEITABILIDADE DO USO DE ÁGUA DA CHUVA POR MORADORES DE CONJUNTOS HABITACIONAIS DA REGIÃO METROPOLITANA DE BELÉM
The aim of this study was to investigate the acceptability of rainwater use by residents of housing estates in Belém and Ananindeua, Pará, Brazil, and to verify the existence of Rainwater Utilization System - SAAC, in these locations. The survey was conducted with 160 residents of the Gleba 1, Jardim Tropical and Residential Jardim Universitário housing estates, most of whom stated that they would accept rainwater in their homes, mainly for general use. Only 23.1% them reported that they could use for human consumption. None of the studied sets there are SAAC for collective use, but in the Jardim Tropical, a family-owned SAAC was identified in a residence. Good acceptability for rainwater among residents of residential condominiums in Belém and Ananindeua is considered to be a major factor in the implementation of SAACs in these types of enterprise, both for family and collective use. KEYWORDS: Rainwater, Alternative water source, Belém Metropolitan Region. El objetivo de este estudio fue investigar la aceptabilidad del uso del agua de lluvia por parte de los residentes de las urbanizaciones en Belém y Ananindeua, Pará, Brasil, y verificar la existencia del Sistema de Utilización del Agua de Lluvia - SAAC, en estos lugares. La encuesta se realizó con 160 residentes de las urbanizaciones Gleba 1, Jardim Tropical y Residential Jardim Universitário, quienes declararon que usarían agua de lluvia en sus hogares, principalmente para usos más generales. Solo 23.1% de ellos informaron para consumo humano. Ninguno de los grupos estudiados tenía SAAC para uso colectivo, pero en el Jardín Tropical se identificó un SAAC de propiedad familiar en una residencia. La buena aceptación del uso del agua de lluvia entre los residentes de condominios residenciales en Belém y Ananindeua se considera un factor importante en la implementación de SAAC en este tipo de empresas, tanto para uso familiar como colectivo. PALABRAS CLAVES: Agua de lluvia, Fuente alternativa de agua, Región Metropolitana de Belém.O objetivo deste estudo foi investigar a aceitabilidade do uso de água da chuva por moradores de conjuntos habitacionais de Belém e Ananindeua, Pará, Brasil, e ainda verificar a existência de Sistema de Aproveitamento de Água da Chuva – SAAC, nesses locais. A pesquisa foi realizada com 160 moradores dos conjuntos habitacionais Gleba 1, Jardim Tropical e Residencial Jardim Universitário e a maioria declarou que utilizaria água da chuva em suas residências, destinando-a, principalmente, para usos mais gerais. Apenas 23,1% deles relataram que poderiam utilizar para consumo humano. Em nenhum dos conjuntos estudados havia SAAC para uso coletivo, mas no Jardim Tropical identificou-se em uma residência um SAAC de uso familiar. Considera-se que a boa aceitabilidade dos moradores de condomínios residenciais de Belém e Ananindeua para uso da água da chuva um fator preponderante à implantação de SAAC nestes tipos de empreendimento, tanto para uso familiar quanto coletivo.PALAVRAS-CHAVE: Água da chuva, Fonte alternativa de água, Região Metropolitana de Belém
Transcranial direct current stimulation combined with upper limb functional training in children with spastic, hemiparetic cerebral palsy: study protocol for a randomized controlled trial
The aim of the proposed study is to perform a comparative analysis of functional training effects for the paretic upper limb with and without transcranial direct current stimulation over the primary motor cortex in children with spastic hemiparetic cerebral palsy
POTENCIALIDADES DO EXTRATO PIROLENHOSO: PRÁTICAS DE CARACTERIZAÇÃO
The use of fossil primary energy sources has remained stable in the world with no prospect of change scenarios. Charcoal is one of these sources. The burning of wood for obtaining its coal emits into the atmosphere components that, once obtained through simple processes, enable significant commercial exploitation with great potential for expanding its use. The objective of this study was to characterize the early practices pirolenhoso extract by fractional distillation in Multidisciplinary Laboratory Waste Management IFRJ campus in Duque de Caxias. For the tests sampled a mass of 300g of crude extract and calculated your income after the distillation process. Was quantified mass tar (heavy phase), pirolenhoso fluid (lighter phase with all its composites) and loss in the process. Stoichiometric comparisons showed, though with little variability in the results, an average trend yield of approximately 64% of the samples with pirolenhoso liquid. 30% of distilled material was characterized as tar. Regarding losses in the process, the perceived average was 6% for the five samples.O uso de fontes fósseis de energia primária tem se mantido estável no mundo, sem perspectivas de mudanças de cenários. O carvão vegetal é uma destas fontes. A queima da madeira para sua obtenção emite, para a atmosfera, componentes que, se coletados através de processos simples, possibilitam aproveitamento comercial significativo com grande potencial de expansão de seu uso. O objetivo deste trabalho foi realizar práticas iniciais de caracterização do extrato pirolenhoso através de destilação fracionada no Laboratório Multidisciplinar de Gerenciamento de Resíduos no IFRJ campus Duque de Caxias. Para realização dos ensaios amostrou-se uma massa de 300g do extrato bruto, sendo calculado o seu rendimento após o processo de destilação. Quantificou-se a massa de alcatrão (fase pesada), o líquido pirolenhoso (fase mais leve com todos os seu constituintes) e a perda no processo. As comparações estequiométricas apresentaram, embora com pouca variabilidade nos resultados, uma tendência média do rendimento de aproximadamente 64% das amostras com o líquido pirolenhoso. 30% do material destilado caracterizou-se como alcatrão. Em relação às perdas no processo, a média percebida foi de 6% para as cinco amostras analisadas
Transcranial direct current stimulation combined with upper limb functional training in children with spastic, hemiparetic cerebral palsy: study protocol for a randomized controlled trial
The aim of the proposed study is to perform a comparative analysis of functional training effects for the paretic upper limb with and without transcranial direct current stimulation over the primary motor cortex in children with spastic hemiparetic cerebral palsy
2 nd Brazilian Consensus on Chagas Disease, 2015
Abstract Chagas disease is a neglected chronic condition with a high burden of morbidity and mortality. It has considerable psychological, social, and economic impacts. The disease represents a significant public health issue in Brazil, with different regional patterns. This document presents the evidence that resulted in the Brazilian Consensus on Chagas Disease. The objective was to review and standardize strategies for diagnosis, treatment, prevention, and control of Chagas disease in the country, based on the available scientific evidence. The consensus is based on the articulation and strategic contribution of renowned Brazilian experts with knowledge and experience on various aspects of the disease. It is the result of a close collaboration between the Brazilian Society of Tropical Medicine and the Ministry of Health. It is hoped that this document will strengthen the development of integrated actions against Chagas disease in the country, focusing on epidemiology, management, comprehensive care (including families and communities), communication, information, education, and research
Educomunicação em Tempos de Pandemia:
Os textos que compõem esta obra são oriundos do VIII Colóquio Ibero-americano de Educomunicação (VIII CIEducom) e IX Colóquio Catarinense de Educomunicação (IX CCEducom), realizados em março de 2021. Em um ano no qual o vírus SARS-CoV-2 e variantes circularam por diversos territórios, Educomunicação em tempos de pandemia: práticas e desafios foi o tema discutido nos eventos.
Este livro colocado à disposição do público é um modo de compartilhar caminhos e convidar pessoas curiosas a percorrerem, por meio das palavras e recursos gráficos, desafios identificados e estratégias para o enfrentamento deste inesperado período de pandemia
Multidifferential study of identified charged hadron distributions in -tagged jets in proton-proton collisions at 13 TeV
Jet fragmentation functions are measured for the first time in proton-proton
collisions for charged pions, kaons, and protons within jets recoiling against
a boson. The charged-hadron distributions are studied longitudinally and
transversely to the jet direction for jets with transverse momentum 20 GeV and in the pseudorapidity range . The
data sample was collected with the LHCb experiment at a center-of-mass energy
of 13 TeV, corresponding to an integrated luminosity of 1.64 fb. Triple
differential distributions as a function of the hadron longitudinal momentum
fraction, hadron transverse momentum, and jet transverse momentum are also
measured for the first time. This helps constrain transverse-momentum-dependent
fragmentation functions. Differences in the shapes and magnitudes of the
measured distributions for the different hadron species provide insights into
the hadronization process for jets predominantly initiated by light quarks.Comment: All figures and tables, along with machine-readable versions and any
supplementary material and additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-013.html (LHCb
public pages
Study of the decay
The decay is studied
in proton-proton collisions at a center-of-mass energy of TeV
using data corresponding to an integrated luminosity of 5
collected by the LHCb experiment. In the system, the
state observed at the BaBar and Belle experiments is
resolved into two narrower states, and ,
whose masses and widths are measured to be where the first uncertainties are statistical and the second
systematic. The results are consistent with a previous LHCb measurement using a
prompt sample. Evidence of a new
state is found with a local significance of , whose mass and width
are measured to be and , respectively. In addition, evidence of a new decay mode
is found with a significance of
. The relative branching fraction of with respect to the
decay is measured to be , where the first
uncertainty is statistical, the second systematic and the third originates from
the branching fractions of charm hadron decays.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-028.html (LHCb
public pages
Measurement of the ratios of branching fractions and
The ratios of branching fractions
and are measured, assuming isospin symmetry, using a
sample of proton-proton collision data corresponding to 3.0 fb of
integrated luminosity recorded by the LHCb experiment during 2011 and 2012. The
tau lepton is identified in the decay mode
. The measured values are
and
, where the first uncertainty is
statistical and the second is systematic. The correlation between these
measurements is . Results are consistent with the current average
of these quantities and are at a combined 1.9 standard deviations from the
predictions based on lepton flavor universality in the Standard Model.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-039.html (LHCb
public pages
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