Time filter

Source Type

Cascavel, Brazil

Reis P.,Federal University of Santa Catarina | Moro A.R.,Federal University of Santa Catarina | Da Silva J.,Sao Paulo State University | Paschoarelli L.,Sao Paulo State University | And 2 more authors.
Work | Year: 2012

This study aimed to assess the student-furniture interface from anthropometric parameters of the sitting posture. The sample was composed of 887 students from two public schools in the State of Parana - Brazil, which attended children from 7 to 17 years of age. The data collection used anthropometric measures of the sitting position, a questionnaire containing a human body diagram for indication of discomfort areas and photographic records to verify postural and ergonomic inadequacies in classroom. The following anthropometric variables were measured: popliteal height, sacro-popliteal length, hip width, lumbar support height, and elbow and thigh height. Percentiles 5 and 95 of anthropometric variables showed differences statistically significant, with variation coefficient greater than 30%. In relation to body discomfort, the highest occurrences were recorded for ankle, knees and shoulder joints as well as for spine and buttocks. It was concluded that children use school furniture that does not meet their anthropometric standards, which favored the adoption of incorrect postures and contributed to the emergence of musculoskeletal problems that can interfere with their educational process. © 2012 - IOS Press and the authors. All rights reserved.

De Souza S.N.M.,University of West Parana | Horttanainen M.,Lappeenranta University of Technology | Antonelli J.,University of West Parana | Klaus O.,University of West Parana | And 2 more authors.
Waste Management and Research | Year: 2014

This article presents an analysis of possibilities for electrical energy production by using municipal solid waste disposed in the biggest Brazilian cities. Currently, the municipal solid waste in Brazil is collected and disposed of at landfills, but there are also other technologies, which in addition to dealing with the garbage can also provide benefits in terms of energy provision. The following scenarios were studied in this work: electricity production from landfill gas (reference scenario); incineration of all municipal solid waste; anaerobic digestion of organic waste and incineration of refuse-derived fuel fractions after being separated in separation plants. According to this study, the biggest cities in Brazil generate about 18.9 million tonnes of municipal solid waste per year (2011), of which 51.5% is biogenic matter. The overall domestic consumption of electricity is 480,120 GWhy-1 in Brazil and the municipal solid waste incineration in the 16 largest cities in the country could replace 1.8% of it using incinerators. The city of São Paulo could produce 637 GWhy-1 with landfill gas, 2368 GWhy-1 with incineration of municipal solid waste and 1177 GWhy-1 with incineration of refuse-derived fuel. The latter two scenarios could replace 27% and 13.5% of the residential electrical energy consumption in the city. This shows that thermal treatment might be a viable option of waste-to-energy in Brazil. © The Author(s) 2014.

Cremonez P.A.,University of West Parana | Feroldi M.,University of West Parana | de Oliveira C.D.J.,Federal University of Parana | Teleken J.G.,Federal University of Parana | And 2 more authors.
New Biotechnology | Year: 2015

The Brazilian aviation industry is currently developing biofuel technologies that can maintain the operational and energy demands of the sector, while reducing the dependence on fossil fuels (mainly kerosene) and greenhouse gas emissions. The aim of the current research was to identify the major environmental, economic and social impacts arising from the production of aviation biofuels in Brazil. Despite the great potential of these fuels, there is a significant need for improved routes of production and specifically for lower production costs of these materials. In addition, the productive chains of raw materials for obtaining these bioenergetics can be linked to environmental impacts by NOx emissions, extensive use of agricultural land, loss of wildlife and intensive water use, as well as economic, social and political impacts. © 2015 Elsevier B.V.

Cremonez P.A.,University of West Parana | Feroldi M.,Federal University of Parana | Feiden A.,University of West Parana | Gustavo Teleken J.,Federal University of Parana | And 4 more authors.
Renewable and Sustainable Energy Reviews | Year: 2015

The rise of biofuels took place after the great oil crisis that impacted the world in the 70s. At that period, the mission of supplying the world's demand was given primarily to liquid biofuels. South America has a set of renewable energy sources and shows a great potential to contribute to the energy supply of the world in the coming years. Brazil leads the production of biofuels in South and Latin America since the 60s and also stands out at a global scale. Considering this context, this paper aims to approach the current scenario and the prospects of the main South-American countries, whose energy matrices receive relevant contribution from liquid biofuels. In South America, liquid biofuels stand out among renewable energies, represented mostly by ethanol and biodiesel. Brazil and Argentina lead the scenario and prospects of these biofuels in South America, while countries like Peru and Uruguay look for alternatives to supply such demands as they struggle internally for legislations that stimulate the use of biofuels in the energy matrix. © 2014 Elsevier Ltd. All rights reserved.

Antonelli J.,University of West Parana | Lindino C.A.,University of West Parana | Santos R.F.,University of West Parana | de Souza S.N.M.,University of West Parana | And 3 more authors.
Journal of Food, Agriculture and Environment | Year: 2015

The water availability in soil is an important factor that influences the plant development. Thus, this study aimed to evaluate the initial development rate of the sunflower culture (Helianthus annuus L.) under different levels of water table depth. In this study 200 mm diameter lysimeters were allocated in three columns, each one containing 6 different depths: 10, 20, 30, 40, 50 and 60 cm. The work was conducted in an experimental greenhouse at Universidade Estadual do Oeste do Paraná, in Cascavel’s city, from April to August of 2013. The parameters evaluated were: stem diameter and plant height, dry and fresh mass of the aerial part. © 2015, World Food Ltd. and WFL Publishers. All rights reserved.

Discover hidden collaborations