Motor Vehicles
Mostrando 37-48 de 58 artigos, teses e dissertações.
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37. Acidentes com transporte rodoviario de produtos perigosos : analise e aplicação de modelo conceitual georreferenciado para avaliação de risco ambiental no minicipio de Campinas- SP / Highway transportation of hazardous materials accidents : characteristics and use of a conceptual model for analyzing environmental risk at Campinas, São Paulo State, Brazil
Highway accidents involving a vehicle transporting hazardous goods may cause extensive material, human and mainly environmental damage. Most of the areas crossed by highways are environmentally vulnerable due to the presence of creeks and rivers, different land use and possibility of the ground water being reached by the transported products. The county of C
Publicado em: 2006
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38. Desenvolvimento e aplicação de um programa em MatLab Simulink para a simulação do desempenho de veículos rodoviários comerciais em movimento acelerado. / Development and application of one program in MatLab Simulink for the simulation of the performance of commercial road vehicles in sped up movement.
O presente trabalho apresenta uma proposta de desenvolvimento e aplicação de um programa de simulação computacional usando o software MatLab/Simulink 6.0 como ferramenta de Engenharia Automotiva, aplicando-a para o estudo do desempenho de veículos comerciais rodoviários (caminhonetes, caminhões e ônibus) em movimentos acelerados e em regime permanent
Publicado em: 2005
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39. THE RESEARCH AND DEVELOPMENT OF AN DRIVER FOR STEP MOTOR OPERATING IN LOW TENSION / PESQUISA E DESENVOLVIMENTO DE UM ACIONAMENTO PARA MOTOR DE PASSO OPERANDO EM BAIXA TENSÃO
The research and development of an driver for step motor operating in low tension presents the development of a chopper driver intended to drive 2- phase step motors. The driver was designed to operate between 12 and 18 V which makes it very attractive for automations in vehicles and robots which carry their own batteries. Contrary to the usual design, where
Publicado em: 2005
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40. Dinâmica veicular relativa ao ride de veículos e métricas para sua avaliação / Vehicle dynamics related to ride and metrics for evaluation
Using simplified mathematical models this work presents a detailed description of vehicle characteristics that significantly influence ride evaluation. These simple modes were used in order to describe basic vehicle modes of vibration, such as bounce, pitch and unsprung mass ones. The influence of modes of vibration with frame flexibility was also presented
Publicado em: 2005
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41. MediÃÃo experimental e prediÃÃo da volatilidade de flex fuels
Oxygenated additives are added to gasoline to increase its antiknock properties. These compounds are substitutes for additives that are environmentally more aggressive, like tetraethyl lead. The oxygenated used in the Brazilian gasoline is the anhydrous ethanol 20% the 25%, which can affect the fuel properties strongly. In the last decade, the number of vehi
Publicado em: 2005
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42. Estudo de um sistema alternativo de ar condicionado automotivo baseado na aplicação de tubos de vórtice utilizando o conceito de regeneração energética. / Study of an alternative automotive air conditioning system with the application of Vortex Tubes utilizing the concept of energetic regeneration.
Os sistemas de ar condicionado automotivos sempre se utilizaram do conceito de operação do ciclo termodinâmico por compressão de vapor, sendo necessário para isso componentes básicos tais como fluído refrigerante, trocadores de calor e compressor. Apesar de diversas décadas de pesquisa e desenvolvimento desse sistema, algumas dificuldades ainda perma
Publicado em: 2005
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43. Formulações de liberação controlada com anestesicos locais - bupivacaina e mepivacaina : preparação, caracterização e ensaios farmacologicos
Local anesthetics (LA) belong to the class of drugs used for the treatrnent of pain. In order to prolong the duration of action and to reduce their systemic toxicity of LA, many studies have been developed using carriers such as liposomes and cyclodextrins; these vehicles allow controlled release (improving anesthetic effect) and avoid high plasmatic levels
Publicado em: 2002
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44. Desenvolvimento de sensores quimicos com fibras opticas para a determinação quantitativa de fuligem e de monoxido de carbono emitidos por veiculos automotores
In this work were developped two portable devices for quantitative determination of automotive pollution by diffuse reflectance. One is for measurements of the smoke emissions from vehicles by diesel cycle and other for measurements of the carbon monoxide emissions from vehicle by Otto cycle. Both are of easy operation and were developed for the measurements
Publicado em: 1999
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45. Analise do uso e das possibilidades do gas metano fossil e de biodigestão nas frotas de veiculos em São Paulo e outras regiões, nos anos 90
This research work tried to assess the recent situation of fuel supplies and the possibility of usage of methane on the urban road transport, as a complement to the traditional fuels. The author finds problems with the diesel oil, gas and LPG supplies, showing that the Brasilian structure of oil products isn t enough for the supply of the national market and
Publicado em: 1998
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46. Cyclists injured while sharing the road with motor vehicles
BMJ Group.
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47. Changes in technical regulations and drivers' safety in top‐class motor sports
Motor racing is a dangerous sport and an inherently risky activity. The organisers of top‐class motor sports championships, Formula One and MotoGP, have agreed on a set of regulations to reduce speed and improve safety over the last 10 years. These changes include limitations in weight, fuel and engine capacity. Nevertheless, there is evidence that most of
BMJ Group.
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48. Epidemiology of bicycle injuries and risk factors for serious injury.
OBJECTIVE: To determine the risk factors for serious injury to bicyclists, aside from helmet use. DESIGN: Prospective case-control study. SETTING: Seven Seattle area hospital emergency departments and two county medical examiner's offices. PATIENTS: Individuals treated in the emergency department or dying from bicycle related injuries. MEASUREMENTS: Informat