Results 101 to 110 of about 278,863 (279)
Evolução recente da produção e importação de automóveis no Brasil
Economia Aplicada, 2000 This article studies the evolution of the production and import of automobiles in Brazil in the nineties. Intervention analysis in time series and cointegration, for the methodology of Johansen, are used to verify it happened a substitution of the ...
Edson Paulo Domingues
doaj
IET Intelligent Transport SystemsDrawing inspiration from the state‐of‐the‐art object detection framework YOLOv8, a new model termed adverse weather net (ADWNet) is proposed. To enhance the model's feature extraction capabilities, the efficient multi‐scale attention (EMA) module has ...
Xinyun Feng +7 more
doaj +1 more source
From Waste to Value: Conversion of Calcium Sulfate to Vaterite via Carbon Capture and Storage
Advanced Functional Materials, EarlyView.This study introduces a new concept for carbon management that relies on the carbonation of industrial gypsum waste and yields phase‐pure vaterite at ambient conditions without any additives. The obtained vaterite is further shown to be a reactive material that develops compressive strength in aqueous suspensions like conventional cements.
Carlos Pimentel +4 more
wiley +1 more source
Kinematic control in a four‐wheeled Mecanum mobile robot for trajectory tracking
The Journal of EngineeringThe challenges of the modern world require mobile robots with the ability to navigate in congested environments with high levels of manoeuvrability. Therefore, the Mecanum wheel may be viable for addressing this challenge.
José Carlos Ortiz Hernández +1 more
doaj +1 more source
The Application of NIMH Batteries in a Light-Duty Electric Vehicle
Technical Transactions, 2019 This article presents the results of experimental tests and simulations of a light-duty electric vehicle, in which the original lead-acid battery pack was replaced with a lightweight pack of nickel-metal-hydride (NiMH) batteries, which enabled a ...
Noga Marcin, Juda Zdzisław
doaj +1 more source
Does Rail Transit Save Energy or Reduce Greenhouse Gas Emissions? [PDF]
, 2008 Far from protecting the environment, most rail transit lines use more energy per passenger mile, and many generate more greenhouse gases, than the average passenger automobile.
Randal O'Toole
core
Advanced Functional Materials, EarlyView.Viscoelasticity‐driven instabilities are harnessed to create tunable, periodic textures in 3D‐printed liquid crystalline polymers. This study illustrates how processing parameters control these spontaneous meso‐scale patterns. These unique structural architectures unlock new possibilities for functional devices, ranging from photonic components to ...
Miaomiao Zou +17 more
wiley +1 more source
International Journal of Communication, 2019 This article argues that automobiles can be understood as avatars, or avacars, given the inclusive definition of avatars as mediated (not necessarily digital) representations of human users that facilitate interaction with other users, entities, or ...
Rabindra Ratan
doaj
Nanoparticles and cars : analysis of potential sources [PDF]
, 2012 Urban health is potentially affected by particle emissions. The potential toxicity of nanoparticles is heavily debated and there is an enormous global increase in research activity in this field.
Groneberg, Jan David Alexander +5 more
core
Introducing Pure Calcium Orthophosphate Gels and Aerogels
Advanced Functional Materials, EarlyView.The synthesis of calcium phosphate‐based gels and aerogels is reported, which exhibit highly porous structures built up of networks of nanoparticles. In case of amorphous aerogels, this leads to yet unmatched specific BET surface areas, making these materials especially interesting for biomedical applications.
Oliver Jeske +4 more
wiley +1 more source