One of the greatest challenges on mobility nowadays is to promote the use sustainable modes of transportation for the population of urban areas. This paper aims to map the main barriers reported by high school students to the use of active modes (walking and cycling) in the city of Cachoeira do Sul, in Rio Grande do Sul. Data were collected through the application of a survey on a sample of city students and were analyzed using discrete choice model logit binomial. Aspects such as security and road safety, as well as distance between origins and destinations presented positive impacts on active transport use. Conclusions can contribute for planning safer and more attractive road environments for the active modes. Results are valid for the surveyed city and also for other small cities with similar urban mobility and urban development standards.

Foi conduzido um experimento a campo com o objetivo de avaliar a eficiência de fungicidas no controle de manchas em glumas de arroz (Oryza sativa L.). Foi utilizado o delineamento de blocos ao acaso, com quatro repetições. Os fungicidas utilizados foram Propiconazole, Pyroquilon, Mancozeb e IBP, com uma ou duas pulverizações. No estádio de maturação foram colhidas amostras de panículas para as análises de patologia das glumas em laboratório. Os métodos de análise foram observação de sintomas em plântulas e do papel de filtro. Devido a natureza complexa das causas das manchas em glumas de arroz, não foi possível detectar efeito fungicida eficiente no controle, rendimento/ha e rendimento de engenho.

The transport sector may be major responsible for directing the urban development of cities, however this possibility is overshadowed by the overuse of individual motorized modes of transport. This situation leads to problems such as congestion, accidents, pollution and increased travel times. In this scenario Traffic Engineering aligned with the perspective of sustainable urban planning appears as an essential tool to mitigate these effects., . Studies in this area provide important data such as the number of vehicles traveling in a particular region, as well as their composition, their origins/destinations and their speed of operation. Using this information, obtained from collection and analysis of data through recognized methodologies, urban managers can make decisions about traffic intervention measures aiming to increase traffic safety and efficiency. Therefore, the present article demonstrates the planning for developing a traffic study in a traffic light controlled-intersection of Cachoeira do Sul city, as a result of a cooperation between the Federal University of Santa Maria - Campus Cachoeira do Sul and City Council, also involving practical activities of degree subjects as an active teaching / learning resource.