Sensibility of coffee plants micorrized to herbicides

Objetivou-se com esse trabalho avaliar o efeito de herbicidas aplicados em pós-emergência em plantas de café arábica inoculadas com fungos micorrízicos arbusculares. O experimento foi conduzido em esquema fatorial 2 x 6, sendo mudas de café arábica cultivar Catuaí IAC 99 inoculadas e não inoculadas com fungos micorrízicos arbusculares, e cinco herbicidas (chlorimuron-ethyl, oxyfluorfen, fluazifop-p-butil, fomesafen, [fluazifop-p-butil+fomesafen]) e uma testemunha, com quatro repetições. As mudas inoculadas com fungos micorrízicos arbusculares (Rhizophagus clarus e Gigaspora margarita) e produzidas em sacolas plásticas contendo solo e esterco (3:1) foram transplantadas para vasos de 20 dm3 de solo, no estádio de cinco pares de folhas. No estádio de sete pares de folhas foram submetidas a aplicação dos herbicidas. Após a aplicação do herbicida foram mensuradas: porcentagem de intoxicação, altura, área foliar, volume radicular, matéria seca das folhas e raízes, teor nutricional da folha e colonização radicular. Observou-se que a aplicação de chlorimuron-ethyl, oxyfluorfen e [fluazifop-p-butil+fomesafen] resultaram em menor incremento das variáveis e maior intoxicação. O fluazifop-p-butil apresentou maior seletividade para as plantas de café. As plantas inoculadas obtiveram maior colonização radicular de fungos micorrízicos que as não inoculadas. Apenas o fluazifop-p-butil não causou interferência na colonização, sendo que as plantas inoculadas mostraram menor intoxicação que as não inoculadas. Considerando todos os parâmetros avaliados conclui-se que as plantas de café arábica cultivar Catuaí Vermelho IAC 99 inoculadas com fungos micorrízicos arbusculares apresentaram maior tolerância ao fluazifop-p-butil. Da mesma forma, conclui-se também que plantas de café quando inoculadas com FMAs apresentaram-se mais tolerantes aos efeitos negativos dos herbicidas chlorimuron-ethyl, fomesafen, oxyfluorfen e [fluazifop-p-butil+fomesafen].  The objective of this work was to evaluate the effects of herbicides applied in post-emergence of Arabic coffee plants inoculated and non-inoculated with arbuscular mycorrhizal fungi. The experiment was conducted in a factorial arrangement 2 x 6, being seedlings of Arabic coffee (Catuaí IAC 99 cv) inoculated and non-inoculated with mycorrhizal fungi (Factor 1), and five herbicides (chlorimuron-ethyl, oxyfluorfen, fluazifop-p-butil, fomesafen, [fluazifop-p-butil + fomesafen]) and a control treatment (Factor 2), with four replications. The seedlings inoculated with mycorrhizal fungi (Rhizophagus clarus and Gigaspora margarita) were produced in polyethylene bags and transplanted to 20 dm3 pots when it was in five pairs leaves stage. In seven pairs leaves stage the plants were submitted to the herbicide applications. After 45 days were measured: percentage of intoxication, height, leaf area, root volume, leaves and roots dry matter, leaf nutrient content and root colonization. Noted that chlorimuron-ethyl, oxyfluorfen and [fluazifop-p-butil+fomesafen] resulting in less increment of variables and higher phytotoxicity. The fluazifop-p-butil showed greater selectivity to coffee plants. The inoculated plants obtained higher root colonization than non-inoculated. Considering all parameters, it is concluded that the Arabica coffee cultivar Catuaí Vermelho IAC 99 inoculated with mycorrhizal fungi showed higher tolerance to fluazifop-p-butil. Similarly, also concludes that coffee plants inoculated with FMAs had become more tolerant to the adverse effects of chlorimuron-ethyl, fomesafen, oxyfluorfen and [fluazifop-p-butil + fomesafen]

Effects of Ibuprofen intake in muscle damage, body temperature and muscle power in Paralympic powerlifting athletes

The aim of this study is to evaluate the effect of ingesting ibuprofen on post-workout recovery of muscle damage, body temperature and muscle power indicators in Paralympic powerlifting athletes. The study was carried out with eight Paralympic powerlifting athletes (aged 27.0 ± 5.3 years and 79.9 ± 25.5 kg of body mass) competing at the national level, with a minimum training experience of 12 months, who all submitted to two experimental conditions: Ibuprofen (2 × 00 mg) and control. The maximal isometric force of the upper limbs and rate of force development, thermography, and serum biochemical analyzes of creatine kinase, lactate dehydrogenase, aspartate aminotransferase and alanine aminotransferase were measured before, after, 24 h after and 48 h after the intervention. Maximal isometric force only decreased in the placebo condition, which increased back to baseline levels, while no substantial decline in baseline force was seen in the ibuprofen condition, although no effect for exercise condition was detected. After the exercise, the rate of force development decreased significantly for both conditions and did not exceed baseline levels again after 48 h. Muscle temperature decreased significantly at 48-h post-exercise in the placebo condition, when compared with the previous day of measurement; and deltoid muscle temperature at 48-h post-exercise was higher with the ibuprofen condition. Although the results indicate some positive effects of ibuprofen use, they do not enable a clear statement regarding its positive effects on muscle function and muscle damage. Ibuprofen seems to have caused a delay in the anti-inflammatory response following exercise.publishedVersio

Quick math: uma ferramenta dinâmica e interativa para o estudo da matemática básica e do calculo 1 / Quick math: a dynamic and interactive tool for the study of basic mathematics and calculus 1

 Atualmente os programas computacionais são indissociáveis da realidade humana. Constantemente surgem novos softwares no mercado. Neste cenário, este trabalho tem como objetivo desenvolver um software para fins educacionais tanto para o ensino como para o estudo da matemática básica e do cálculo 1. O programa computacional será dividido em dois módulos. O primeiro módulo compreenderá o conteúdo de determinados tópicos da matemática estudados no ensino médio, enquanto o segundo módulo abrangerá os tópicos da disciplina de Cálculo 1, ofertada aos alunos de engenharia pelo Instituto de Tecnologia. Cada tópico possuirá as seguintes funções disponíveis para o usuário: teoria, exercícios propostos e entrada de dados. O programa computacional será desenvolvido em MatLab Guide. A utilização desta ferramenta proporciona ao desenvolvedor a condição de elaborar uma interface amigável entre o computador e o usuário. Para o desenvolvimento da interface gráfica, ferramentas disponíveis no MatLab Guide como janelas Pop-up Menu, List Box, Button Group, Push Button serão utilizadas. Essas ferramentas são muito usadas por todo navegador da internet e usuários de programas computacionais, portanto o software desenvolvido será de fácil utilização. Pretende-se divulgar e disponibilizar o programa para professores e alunos da áre

Sensibilidade do Modelo Distribuído Hidrológico da Biosfera às Propriedades Hídricas do Solo em uma Pequena Bacia de Cerrado

For modeling of hydrologic processes that occur on the scale of watersheds to characterize the availability of water in it, you need a physical model that can represents the topography, vegetation and soil characteristics. On the other hand, the variables that provide atmospheric forcing require great accuracy and models are sensitive to them mainly to rainfall, it is the main input in hydrological modeling. This study focuses on evaluation of four physical parameters of soil in hydrologic modeling in Giant Foot basin, SP, Brazil with DBHM model. The study period covers the years 2009-2014, FAO’s soil maps were used for the physical characterization of the basin, and the MODIS for vegetation data (LAI and FPAR). Domain of 500 m for spatial resolution in a basin area of 11.94 km2. Was used a basic configuration that let determine the influence of soil parameters in the water content results for the surface layer up to 1 m. It shows higher water retention in the soil to high values of the Campbell parameter, matric potential and porosity; sensitivity to hydraulic conductivity depends on the relationship with the daily accumulated rainfall.Neste este estudo avaliou-se a sensibilidade dos parâmetros físicos do solo do modelo hidrológico da biosfera (DBHM) na simulação da umidade do solo até 1 m de profundidade na Bacia Hidrográfica do Córrego Paulicéia (BHCP), SP, Brasil. A vegetação dominante da bacia é de cerrado e solo arenoso. Foram utilizados dados meteorológicos diários de estações meteorológicas no entorno da região e os de uma torre micrometeorológica localizada dentro da BHCP no período 2009-2014. A área da bacia é de 11.94 km2, discretizada em uma grade de 500 m de resolução espacial.  A umidade do solo observada foi utilizada como referência para comparação com a umidade do solo simulada. DBHM foi configurado de forma que permitisse determinar a influência desses parâmetros na umidade do solo armazenada até 1 m. Foram gerados diferentes combinações de valores dos parâmetro de Campbell, potencial matricial de saturação, porosidade e condutividade hidráulica de saturação a partir de intervalos de variação prescritos. Obteve-se maior retenção da água no solo para altos valores do parâmetro de Campbell, potencial matricial de saturação e a porosidade. A sensibilidade à condutividade hidráulica depende da intensidade da precipitação. A umidade do solo foi mais sensível a variações no parâmetro de Campbell

Effects of Resistance Training on Oxidative Stress Markers and Muscle Damage in Spinal Cord Injured Rats

Background: Spinal cord injury (SCI) is a condition that affects the central nervous system, is characterized by motor and sensory impairments, and impacts individuals’ lives. The objective of this study was to evaluate the effects of resistance training on oxidative stress and muscle damage in spinal cord injured rats. Methodology: Forty Wistar rats were selected and divided equally into five groups: Healthy Control (CON), Sham (SHAM) SCI Untrained group (SCI-U), SCI Trained group (SCI- T), SCI Active Trained group (SCI- AT). Animals in the trained groups were submitted to an incomplete SCI at T9. Thereafter, they performed a protocol of resistance training for four weeks. Results: Significant differences in muscle damage markers and oxidative stress in the trained groups, mainly in SCI- AT, were found. On the other hand, SCI- U group presented higher levels of oxidative stress and biomarkers of LDH and AST. Conclusion: The results highlight that resistance training promoted a decrease in oxidative stress and a significative response in muscle damage markers. Keywords: spinal cord injury; resistance training; oxidative stress; muscle damag

Cashew nut roasting: chemical characterization of particulate matter\ud and genotocixity analysis

Background: Particulate matter (PM) potentially harmful to health and related to genotoxic events, an increase in the number of hospitalizations and mortality from respiratory and cardiovascular diseases.\ud The present study conducted the first characterization of elemental composition and polycyclic aromatic hydrocarbon (PAH) analysis of PM, as well as the biomonitoring of genotoxic activity associated to artesanal cashew nut roasting, an importante economic and social activity worldwide.\ud Methods: The levels of PM2.5 and black carbon were also measured by gravimetric analysis and light reflectance. The elementa lcomposition was determined using X-ray fluorescence spectrometry and PAH analysis was carried out by gás chromatography–mass spectrometry. Genotoxic activity was measured by the Tradescantia pallida micronucleus bioassay (Trad-MCN).Other biomarkers of DNA damage, such as núcleoplasmic bridges and nuclear fragments, were also quantified. Results: The mean amount of PM2.5 accumulated in the filters (January 2124.2 mg/m3; May 1022.2 mg/m3;\ud September 1291.9 mg/m3), black carbon(January 363.6 mg/m3; May70 mg/m3; September 69.4 mg/m3) and concentrations of Al, Si, P, S, Cl, K, Ca ,Ti,Cr, Mn, Fe, Ni, Cu, Zn, Se, Br and Pb were significantly higher than the non-exposed area. Biomass burning tracers K,Cl, and S were the major inorganic compounds found. Benzo[k]fluoranthene, indene[1,2,3-c,d]pyrene, benzo[ghi]perylene, phenanthrene and benzo[b]fluor-\ud anthene were the most abundant PAHs. Mean benzo[a]pyrene-equivalent carcinogenic power values showed a significant câncer risk. The Trad-MCN bioassay revealed an increase in micronucleus frequency, 2–7 times higher than the negative control and significantly higher in all the months analyzed, possibly related to the mutagenic PAHs found.\ud Conclusions: This study demonstrated that artesanal cashew nut roasting is a serious occupational problem, with harmful effects on workers' health. Those involved in this activity are exposed to higher PM2.5 concentrations and to 12 PAHs considered potentially mutagenic and/or carcinogenic. The Trad-MCN with T. pallida was sensitive and efficient in evaluating the genotoxicity of the components and other nuclear alterations may be used as effective biomarkers of DNA damage.CNPq - 555223/2006-

Estudo inicial sobre a evolução do novo CORONAVÍRUS (SARS-COV-2) no estado do Pará (Brasil), no período entre 17/03/2020 e 06/04/2020.

O presente artigo apresenta o estudo inicial sobre a evolução do novo coronavírus (SARS-CoV-2) no estado do Pará, desde a confirmação do primeiro infectado no dia 18/03/2020 até o dia 06/04/2020.O estudo apresenta também um modelo matemático para estimar o número de infectados até o dia 06/05/2020. Os resultados mostram que o modelo é confiável para predições de curto prazo, cuja evolução pode ser de 1 infectado em 18/03/2020 a 761 infectados em 18/04/2020.This paper presents the initial study on the evolution of Coronavirus (SARS-CoV-2) in the state of Pará, from the confirmation of the first infected on 18/03/2020 until 06/04/2020. The study also presents a mathematical model for estimating the number of infected by 06/05/2020. The results show that the model is reliable for short-term predictions, whose evolution can be from 01 infected on 03/18/2020 to 761 infected on 18/04/2020