Estimativa da poluição emitida pelos ônibus das linhas troncais da cidade de Uberlândia, MG

The transport of people and goods contributes to the deterioration of the environment in urban areas because of the generation of pollution, such as, air, noise, soil, water or visual degradation. The heavy vehicles that use diesel as fuel are mainly responsible for the emission of nitrogen oxides (NOx) and particulate matter (PM), contributing to participation of the transport sector in air pollution. In addition, there is emission of Greenhouse Gas (GHG) whose main component is carbon dioxide (CO2). In most major cities, public transportation is often considered as a less polluting alternative compared to the private vehicle, in view of the potential to reduce, per passenger, the emissions of GHG and air pollutants. The study area was the city of Uberlândia and the objects of study were the trunk lines of the Sistema Integrado de Transporte (SIT). The emissions of NOx, PM and CO2 were estimated through the bottom-up approach which used the route of each bus line and also fuel consumption obtained through simulation from the TSIS software. The software has some result limitations, there are no report about the emission of pollutants by bus, and it is not able to change specifications for the fuel used by the fleet. The results obtained through calculations of pollutants and GHG emission by the bottom-up approach show that the emission is higher when using fuel comsuption obtained in simulation than using distance. For the results considering fuel and distance there was a reduction in emissions comparing ethanol and diesel.

Comunicação pública e acesso à informação: o interesse público presente nas produções da assessoria de imprensa da prefeitura de Santarém (PA)

Public communication is based on the public interest and the effective democratization of communication in publics agencies. Access to information is the base for this is materializes solidly, helping even in formation as an individual. The work of the press office is the instrument for the Public Communication and access to information is guaranteed to society , since one of the goals of the press officer is to be committed to media , providing it material quality and depth , benefiting so the citizen. The research the look exactly on reflections on the topics listed above. The purpose of this study was to analyze the news published in Fanpage and Santarem Town Hall site, in western Para, meet the demands of Public Communication and the precepts of the Access to Information Law (AIL), starting the questioning until point to Santarem Town Hall works to public communication. For this analysis, we developed a work using the techniques of bibliographic and descriptive research. Such referrals have served as a starting point for fieldwork and for exhibition on the concepts of Public Communication of Access to Information Law, Organizational Communication and Press office. The research was considered, also, because document was to identify and verify the documents with a specific purpose. This research was lifting a quantitative survey to support the qualitative analysis of the object. So considering its features is that it was monitor the Fanpage and the Town Hall site, through a specific tool and then the analysis of posts, searching to observe public communication accomplished in the Town Hall of Santarem, on the Internet, especially social media and corporate website. The methodology helped obtain indicators that allowed add knowledge about the production of the Town Hall press office, and identify if the press office productions meet AIL and Public Communication. Finally, it was suggested in this study the elaboration a strategic script of communication because it scales the actions and policies of the Santarem city, allowing citizen participation. For this, too, it suggested the training of Santarem municipal government communication team as a strategy. This training consists of speeches and wheels conversations with all the press officer of the town hall, including the secretariats.