Discovery in IC10 of the farthest known symbiotic star

We report the discovery of the first known symbiotic star in IC10, a starburst galaxy belonging to the Local Group, at a distance of ~750kpc. The symbiotic star was identified during a survey of emission-line objects. It shines at V = 24.62+-0.04, V - R_C = 2.77+-0.05 and R_C - I_C = 2.39+-0.02 and suffers from E(B-V) = 0.85+-0.05 reddening. The spectrum of the cool component well matches that of solar neighborhood M8III giants. The observed emission lines belong to Balmer series, [SII], [NII] and [OIII]. They suggest a low electronic density, negligible optical depth effects and 35,000K < T_eff < 90,000K for the ionizing source. The spectrum of the new symbiotic star in IC10 is an almost perfect copy of that of Hen 2-147, a well known Galactic symbiotic star and Mira.Comment: 5 pages including 3 figures. MNRAS Letters accepted. Also available at http://pessoais.ov.ufrj.br/denise

Desapropriação de imóvel rural para fins de realização da reforma agrária

The theme of this article is the “Expropriation of rural property for the purpose of carrying out agrarian reform”. The problem was investigated: “Does the Judiciary use mechanisms to benefit some political groups to the detriment of others in relation to expropriation for agrarian reform?”. The following hypothesis was considered: “The Judiciary, interferes in this type of expropriation”. The general objective is “to demonstrate how the Judiciary influences the judgments on the subject”. The specific objectives are: "to present primordial concepts about expropriation" and "how the Judiciary Power interferes in the expropriation decisions in the first instance until the Federal Court of Justice". This work is important for a legal practitioner because it addresses legal principles and concepts; for science, it is important because it is a controversial subject, which often needs academic work; adds to society because the theme reduces social inequalities. This is a theoretical qualitative research lasting three months.O tema deste artigo é “Desapropriação de imóvel rural para fins da realização da reforma agrária”. Investigou o problema: “O Poder Judiciário utilizou mecanismos para beneficiar alguns grupos políticos em detrimento de outros sobre a desapropriação para a reforma agrária?”. Cogitou a seguinte hipótese “O Poder Judiciário interfere nessa modalidade de desapropriação”. O objetivo geral foi “demonstrar como o Poder Judiciário influenciou os julgados sobre a temática”. Os objetivos específicos foram: “apresentar conceitos primordiais sobre a desapropriação” e “como o Poder Judiciário interfere nas decisões da desapropriação na primeira instancia até Supremo Tribunal Federal”. Este trabalho foi importante para um operador do Direito, pois abordou princípios e conceitos jurídicos; para a ciência, foi importante por ser um assunto polêmico, que necessita frequentemente de trabalhos acadêmicos; agregou à sociedade pela temática reduzir as desigualdades sociais. Trata-se de uma pesquisa qualitativa teórica com duração de três meses

Double blind randomized clinical trial comparing minimally- invasive envelope flap and conventional envelope flap on impacted lower third molar surgery

The latest trend in surgery is to look for minimally invasive procedures, with fewer complications and a shorter recovery time. This study aims to compare the minimally- invasive envelope flap, with smaller incision and fewer dissection and the conventional envelope flap, with a 20mm incision, on impacted mandibular third molar surgery, focusing on the hypothesis that there were no differences in postoperative outcomes. A double-blind randomized clinical trial was designed to compare both incisions, focused on determining the approach with minor postoperative side-effects and minor impact on quality-of-life. A total of 60 patients were enrolled for the study if their presented impacted mandibular third molar and was 18-years-old or more. Both groups were evaluated from time elapsed on the surgery, maximum mouth opening, swelling and quality of life assessment. The flap choice influenced facial swelling (p=0,03), pain on the first three days (p=0,037), interference with oral hygiene (p=0,019) and discomfort on speech (p=0,07). Chewing, swallowing, trismus, pain after seven days, postoperative complications and other quality-of-life arrangements were no different between groups. The minimally- invasive envelope flap could lead to a less painful experience for the patient, with fewer impact on the oral hygiene and speech discomfort

Statistical analysis of urban waste management via Pay-As-You-Throw (PAYT) system in the Portuguese city of Guimarães

At present the production of waste is a problem in several countries, where the rate of waste has gradually increased due to several factors that influence the development of the population. A pioneering project called Pay-As-You-Throw (PAYT) was implemented in the Portuguese city of Guimaraes and is managed by the municipal company VITRUS AMBIENTE. The challenge of this project is to identify the factors that influenced municipal solid waste production in the PAYT project area. For this, an analysis and a modeling process were carried out based on data collected between April 2016 and April 2019.Special thanks to VITRUS AMBIENTE for investing on science and innovative projects. This research was partially funded by Portuguese funds through the Portuguese Foundation for Science and Technology (”Fundação para a Ciência e a Tecnologia” - FCT), within the framework of project UID/MAT/00013/2013

AVALIAÇÃO DA PRÓPOLIS COMO UM AGENTE TERAPÊUTICO PARA A DOENÇA DE PARKINSON

Parkinson's Disease (PD) is characterized by the gradual and more effective destruction of dopaminergic nerve cells in the central nervous system, which influences emotions, mood and the motor system. Most of the drugs used to treat PD result in side effects that are harmful to people with the disease. Given this scenario, this article aims to evaluate the therapeutic potential of propolis in PD, a natural product used for centuries in popular medicine and with many medicinal properties. The importance of the study is highlighted by the increase in life expectancy worldwide, as aging is the most significant risk factor for PD, adding to the fact that the disease does not have a cure and gradually deteriorates the quality of life of its sufferers. . For this purpose, an exploratory and integrative literature review was carried out using the PICO strategy. 23 articles were selected for final analysis after a bibliographic survey of the last 10 years, in the main databases. To this end, the study began with the analysis of the multifactorial and epidemiological etiology of PD, which may be related to oxidative stress, neuroinflammation and mitochondrial abnormalities. Next, a brief description of the traditional treatment of PD and the pharmacological properties of propolis was provided, in addition to a description of its main therapeutic elements, such as flavonoids (CAPE and chrysin). In short, propolis reduced neuronal loss, repeatedly minimized the expression of inflammatory markers, acted as an antioxidant and improved the animals' motor/cognitive scores. Added to these properties is the neuroprotective capacity against excitotoxicity and the formation of glial scars that prevent the reconnection of axons. With the information obtained, it was found that propolis is a potential therapeutic agent for PD, aiming to fill the gaps that current drugs intended for this function do not cover, for example weight loss and cardiovascular and non-motor symptoms.La enfermedad de Parkinson (EP) se caracteriza por la destrucción gradual y más eficaz de las células nerviosas dopaminérgicas del sistema nervioso central, lo que influye en las emociones, el estado de ánimo y el sistema motor. La mayoría de los medicamentos utilizados para tratar la EP provocan efectos secundarios que son perjudiciales para las personas que padecen la enfermedad. Ante este escenario, este artículo tiene como objetivo evaluar el potencial terapéutico del propóleo en la EP, un producto natural utilizado durante siglos en la medicina popular y con múltiples propiedades medicinales. La importancia del estudio se destaca por el aumento de la esperanza de vida a nivel mundial, ya que el envejecimiento es el factor de riesgo más importante para la EP, sumado a que la enfermedad no tiene cura y deteriora gradualmente la calidad de vida de quienes la padecen. . Para ello se realizó una revisión exploratoria e integradora de la literatura mediante la estrategia PICO. Se seleccionaron 23 artículos para el análisis final luego de un levantamiento bibliográfico de los últimos 10 años, en las principales bases de datos. Para ello, el estudio comenzó con el análisis de la etiología multifactorial y epidemiológica de la EP, que puede estar relacionada con el estrés oxidativo, la neuroinflamación y las anomalías mitocondriales. A continuación, se realizó una breve descripción del tratamiento tradicional de la EP y de las propiedades farmacológicas del propóleo, además de una descripción de sus principales elementos terapéuticos, como los flavonoides (CAPE y crisina). En resumen, el propóleo redujo la pérdida neuronal, minimizó repetidamente la expresión de marcadores inflamatorios, actuó como antioxidante y mejoró las puntuaciones motoras/cognitivas de los animales. A estas propiedades se suma la capacidad neuroprotectora frente a la excitotoxicidad y la formación de cicatrices gliales que impiden la reconexión de los axones. Con la información obtenida, se constató que el propóleo es un potencial agente terapéutico para la EP, buscando llenar los vacíos que los medicamentos actuales destinados a esa función no cubren, por ejemplo, la pérdida de peso y los síntomas cardiovasculares y no motores.A Doença de Parkinson (DP) é caracterizada pela destruição gradual e mais efetiva das células nervosas dopaminérgicas do sistema nervoso central, o que influencia as emoções, o humor e o sistema motor. Em sua maioria, os fármacos utilizados para tratar a DP acarretam em efeitos colaterais prejudiciais aos portadores da doença. Diante desse cenário, o presente artigo tem como objetivo avaliar o potencial terapêutico da própolis na DP, um produto natural utilizado a séculos na medicina popular e com muitas propriedades medicinais. A importância do estudo fica evidenciada diante o aumento da expectativa de vida mundial, pois o envelhecimento é o fator de risco mais expressivo para a DP, somando-se ao fato da enfermidade não ter uma cura e deteriorar gradativamente a qualidade de vida de seus portadores. A partir deste propósito, foi realizado uma revisão exploratória e integrativa de literatura por meio da estratégia PICO. Foram selecionados 23 artigos para analise final após um levantamento bibliográfico dos últimos 10 anos, nas principais bases de dados. Para tanto, iniciou-se o estudo com a análise da etiologia multifatorial e epidemiológica da DP, que pode estar relacionada ao estresse oxidativo, a neuroinflamação e as anormalidades mitocondrial. Em seguida, foi realizada uma breve descrição do tratamento tradicional da DP e das propriedades farmacológicas da própolis, além da descrição dos seus principais elementos terapêuticos, como os flavonoides (CAPE e crisina). Em suma, a própolis diminuiu a perda neuronal, minimizou reiteradamente a expressão de marcadores inflamatórios, atuou como antioxidante e aprimorou os escores motores/cognitivos dos animais. Agrega-se a essas propriedades, a capacidade neuroprotetora contra a excitotoxidade e a formação de cicatrizes gliais que impedem a reconexão dos axônios. Com as informações obtidas, constatou-se que a própolis é um potencial agente terapêutico para a DP, visando preencher as lacunas que os atuais fármacos destinados a essa função não contemplam, por exemplo a perda de peso e os sintomas cardiovasculares e não motores

Effect of commercial extract of citrus aurantium in obese rats induced by cafeteria diet/ Efeito do extrato comercial de citrus aurantium em ratos obesos induzidos por dieta de cafeteria

Obesity is the result of a higher caloric energy expenditure increasing the risk of developing diabetes and cardiovascular diseases. Citrus aurantium, has been used for weight reduction by having p-Synephrine, a compound associated with this action. The objective of this work was to evaluate the effects of commercial extract of Citrus aurantium in weight alteration in the biochemical parameters of rats induced to obesity by High fat / cafeteria diet. The animals were divided into four experimental groups: Group 1: Standard commercial feed; Group 2: standard commercial feed, and solution of commercial extract of Citrus aurantium, via gavage; Group 3: high fat/cafeteria feed. Group 4: high fat/cafeteria feed commercial extract of Citrus aurantium, via gavage. In order to maintain the same experimental conditions in all groups, the animals in groups 1 and 3, received filtered water via gavage. Tests were performed to evaluate the antioxidant capacity of commercial extract of Citrus aurantium: total phenolic compounds, DPPH and FRAP.E in the plasma of animals: FRAP in addition to analyzes of blood biochemical parameters. Results obtained with the commercial extract showed positive results, however, the antioxidant activity in plasma, was not able to alleviate oxidative stress. Significant differences were found in the values of Aspartate aminotransferase, alanine aminotransferase, VLDL cholesterol, HDL and triglycerides, however there was no reduction of weight. The commercial extract of Citrus aurantium, is important in the prevention of hepatic damage and diseases linked to elevations in the levels of VLDL and triglyceride levels, especially when this increase is associated with obesity