PERANCANGAN DAN ANALISIS KEKUATAN STATIS PADA FIXED-PORTABLE HYDRAULIC SCISSOR CAR LIFT PLATFORM DENGAN KAPASITAS 2 TON

The large number of vehicles (cars) currently available causes an increase in demand for vehicle services and maintenance. Required availability of equipment that results in effectiveness and efficiency in its maintenance. The scissor lift model was chosen because it is portable and does not require much space for use in workshops. The design of a lifting device that uses a scissor lifting type hydraulic system that can be used fixed-portable for MPV type vehicles or vehicles weighing under 2 tons was carried out. The designed platform is then calculated and analyzed for its structural strength using FUSION 360 and FTOOL software. The calculation results show that the total stress  is less than the permissible stress , then the material meets the strength requirements () and is declared safe. From the FEA Stress Von Mises simulation results, the total stress on the structure is smaller than the material stress. Due to the calculation using = 1.5 and the safety factor from the simulation results is greater than the safety factor used in the design, the design meets the strength requirements and is declared safe

Identification of the profile of volatile compounds in commercial kombucha added with hibiscus (Hibiscus rosa-sinensis) / Identificação do perfil de compostos voláteis em kombucha comercial adicionado de hibisco (Hibiscus rosa-sinensis)

Kombucha is a fermented drink from a symbiotic culture of bacteria and yeasts (SCOBY) and has been consumed due to its sensory and antioxidant characteristics that provide several health benefits, in addition to scientific evidence showing that there are variations in the chemistry of these kombucha. Therefore, this study aimed to investigate the profile of volatile compounds from kombucha commercials using the GC-MS-SPME technique. Five kombucha samples from commercial points on Rio de Janeiro City were analyzed. The profile of volatile compounds was evaluated using the SPME technique using a PDMS/DVB/CAR triple fiber. Volatiles were identified by comparing their mass spectra with a NIST and IRL. The results indicated that the profile of volatile compounds analyzed was constituted by nine classes of compounds, namely, esters, ketones, carboxylic acids, alcohols, aldehydes, amines, hydrocarbons, lactones and terpenes. Among them, the esters were the majority, ranging from 20.0 to 28.0 %, it was also possible to observe that 2-Octenal was the most abundant compound in all samples, ranging from 52.7 to 63.0 %. Thus, it is seen that the profile of volatile compounds in kombucha is found by a complex mixture of compounds belonging to different classes and which have the esters as the most representative due to the fermentation process that occurs during the production of kombucha

Analysis of the basic sanitation system of black land earth in Manacapuru-Am

Due to the adjunct population growth of the Industrial Revolution since the 70\u27s, it has been thought and planned about the adequate urban infrastructure, which is taking into consideration the welfare of the population. From this line of thought, sanitation has become one of the alternatives for municipal development, because besides encompassing sanitation services, it also has interrelationship with other areas such as health, housing, leisure and others. Thus, this article aimed, through the analysis of the basic sanitation system, to facilitate the identification of the current problems in the sector of the black neighborhood in Manacapuru - AM. To this end, discussions were held on the structure of the Municipal Basic Sanitation Plan of the municipality and field measurements were collected for the development of diagnostic maps of basic infrastructure characteristics, such as drainage, water and sewage network, waste collection and junk dumps. Thus, the analysis of the previous and current sanitation situation was carried out. Increases were found in the junk dumps, and in the drainage system\u27s mouths and in the absence of a sewage system. From this the adopted method was efficient for analysis of the basic systems, being able to be used for evaluation of the other districts of the city

Analysis of the current situation of irregular dwellings in the black land neighborhood of Manacapuru-Am: causes and consequences

The present work aimed to perform an analysis of the current situation of irregular dwellings in the black earth neighborhood of Manacapuru-AM using geotechnologies. The methodology consists in identifying the irregular occupations of the neighborhood, and demonstrating the problems encountered as well as the possible solutions. The information obtained was used to generate the diagnostic maps to analyze the characteristics of irregular dwellings and if they have water and sewage network, waste collection, junk dump and drainage network, because it is a simple technique, it is possible to be used in other neighborhoods of Manacapuru, being extremely important in helping public policy planning and environmental monitoring

POSITIVISMO DESAFIADO: DO CONCEITO DE DIREITO AO PÓS-ESCRITO DE HART E SUA RELAÇÃO COM A CRÍTICA DE DWORKIN

O presente trabalho busca apresentar uma análise argumentativa da resposta do pós-escrito de O Conceito de Direito às críticas formuladas por Dworkin. Primeiramente, será demonstrado que Hart intenta uma teoria descritiva geral do direito, enquanto Dworkin propõe uma teoria liberal do direito. Em seguida, explica-se a teoria de Hart como união de regras primárias e secundárias. Posteriormente serão analisadas as críticas de Dworkin. A metodologia do trabalho baseou-se em pesquisa teórica, com levantamento bibliográfico. Para fundamentar as hipóteses foi utilizado o método dedutivo. Finalmente, defende-se que a posição de Dworkin não apresenta um desafio real para O Conceito de Direito

Spatial and nycthemeral distribution of the zooneuston off Fernando de Noronha, Brazil

Island environments drastically modify the hydrodynamics of ocean currents and generate strong vertical turbulence. This leads to an upward transport of nutrient-rich waters, thus increasing the biomass of plankton in these oceanic marine environments. The objective of this study was to assess the biomass and density of the zooneuston communities in relation to the upper and lower layers (epi-/hyponeuston), the nycthemeral variation (day/night), the currents in relation to the island (downstream vs upstream), and the distance from the island, focusing on the spatial variability. Samples were taken in July and August 2010 with a David-Hempel neuston net (Hydro-Bios) with a mesh size of 500 µm. Twenty-one taxa were recorded. The most abundant taxa were Copepoda, Chaetognatha, Teleostei (eggs) and Hydrozoa. This is the first record of phoronid larvae for the waters of the Tropical Atlantic. For both layers, density and biomass were significantly higher at night. Density and biomass were always significantly higher in the upper (epineuston) layer than in the lower (hyponeuston) layer. This was probably due to a zooneuston aggregation at the surface and massive vertical migration from deep waters at night, leading to increased abundances at night in both neuston layers.Ambientes insulares são responsáveis pela modificação da hidrodinâmica das correntes oceânicas e por gerar turbulência vertical. Esta faz com que águas da camada inferior ricas em nutrientes sejam elevadas à região superior da coluna de água, aumentando a biomassa do plâncton local. O objetivo deste trabalho foi avaliar a biomassa e a densidade e das comunidades do zoonêuston em relação às camadas superior e inferior da coluna de água (epi/hiponêuston), à variação nictemeral (dia/noite), corrente superficial predominante (jusante/montante) e à distância da ilha, com foco na variabilidade espacial do plâncton. Amostragens foram realizadas de julho a agosto de 2010 com uma rede de nêuston David-Hempel (Hydro-Bios) com malha de 500 µm. Vinte e um táxons foram registrados, sendo os mais abundantes Copepoda, Chaetognatha, Teleostei (ovos) e Hydrozoa. Apresenta-se também o primeiro registro de larvas de Phoronida para o Atlântico Tropical. Para ambas as camadas, a densidade e a biomassa foram significativamente mais elevadas durante a noite e também significativamente maiores no epinêuston. Este fato provavelmente ocorreu devido à agregação do zoonêuston na superfície do oceano e à forte migração vertical a partir de camadas profundas durante a noite, levando a um aumento das abundâncias dos organismos nesse período, em ambas as camadas neustônicas

Modelando trajetórias de aprendizagem utilizando princípios de design baseado em blocos: um estudo de caso aplicado à aprendizagem em desenvolvimento web

Esta pesquisa apresenta uma proposta de modelo gráfico para representartrajetórias de aprendizagem utilizando os princípios de design das linguagens deprogramação visuais. Tal abordagem permite, através da relação entre conceitos, modelar percursos pedagógicos complexos, sugerindo um instrumento promissor no sentido de garantir uma visão macro eficiente das trajetórias. Além disso, um estudo de caso foi realizado no curso de Informática da Universidade Federal do Rio Grande do Sul, onde 27 estudantes foram convidados a estruturar trajetórias de aprendizagem utilizando o modelo e ferramentas propostos nessa pesquisa. Como resultado foi possível observar a geração de 50 representações de trajetos, com abordagens distintas para assuntos inerentes à área de desenvolvimento para internet. Não obstante, os dados quantitativos de desempenho evidenciam que, ao estruturar as trajetórias na forma de blocos, ocorre ganho quanto à assimilação dos conceitos, além de uma visível evolução do aspecto da homogeneidade da turma

Body fat assessment by bioelectrical impedance and its correlation with different anatomical sites used in the measurement of waist circumference in children

OBJECTIVE: To compare the different anatomical sites used in the measurement of waist circumference, as well as the effectiveness of these landmarks to predict the percentage of body fat by tetrapolar bioelectrical impedance analysis. METHODS: We evaluated 205 children from 6 to 9 years of age of both sexes. Data on weight, height and waist circumference were collected at three different sites: at the lower abdominal curvature, above the navel and at the midpoint between the last rib and the iliac crest. Nutritional status was assessed through the body mass index (BMI)/age as recommended by the World Health Organization. RESULTS: The sample was considered homogeneous in terms of sex, and the mean age was 7.2±1.2 years. Regarding nutritional status, 6.3% of the children had low weight, 75.1% were eutrophic, 7.3% were overweight, and 11.2% were obese. Among males, there was no statistical difference between the different sites of measurement; in females, the measurement above the navel was statistically higher. In the correlation analysis, the midpoint measurement showed the best correlation with percentage of body fat, with values of 0.50 in boys and 0.62 in girls. CONCLUSION: Waist circumference measured at the midpoint between the last rib and the iliac crest presented the best correlation with percentage of body fat.OBJETIVO: Comparar os diferentes pontos anatômicos de medida da circunferência da cintura, bem como a eficácia desses locais em predizer o percentual de gordura corporal mensurado pela bioimpedância elétrica tetrapolar. MÉTODOS: Foram avaliadas 205 crianças de 6 a 9 anos de idade de ambos os sexos. Foram coletados dados de peso, estatura e circunferência da cintura em três locais diferentes: na menor curvatura abdominal, sobre a cicatriz umbilical e no ponto médio entre a última costela e crista ilíaca. A avaliação do estado nutricional foi realizada a partir do índice de massa corporal/idade recomendado pela Organização Mundial de Saúde. RESULTADOS: No presente estudo houve homogeneidade entre os sexos, e a idade média foi de 7,2±1,2 anos. Em relação ao estado nutricional, 6,3% das crianças apresentaram baixo peso, 75,1% eram eutróficas, 7,3% apresentaram sobrepeso e 11,2% obesidade. No sexo masculino não houve diferença estatística entre os diferentes locais de medida. No feminino, a medida sobre a cicatriz umbilical foi estatisticamente maior. Na análise de correlação, a circunferência medida no ponto médio foi a que obteve melhor correlação com o percentual de gordura corporal, com valores de 0,50 nos meninos e 0,62 nas meninas. CONCLUSÃO: A circunferência da cintura medida no ponto médio entre a crista ilíaca e ultima costela foi a que apresentou melhor correlação com o percentual de gordura corporal.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Federal de ViçosaUniversidade Federal de São Paulo (UNIFESP)UFVUNIFESPUNIFESPSciEL