Federal University of São Carlos

About: Federal University of São Carlos is a education organization based out in São Carlos, Brazil. It is known for research contribution in the topics: Population & Microstructure. The organization has 16471 authors who have published 34057 publications receiving 456654 citations. The organization is also known as: UFSCar & Federal University of São Carlos.

Sub-micrometre particulate matter is primarily in liquid form over Amazon rainforest

Abstract: The physical state of atmospheric particulate matter affects its growth and reactivity, which can affect climate. Measurements of particle rebound reveal that particulate matter over the Amazon forest is usually liquid during wet and dry seasons.

Enzymatic Deconstruction of Sugarcane Bagasse and Straw to Obtain Cellulose Nanomaterials

Abstract: The application of green process engineering strategies to obtain high-value, eco-friendly, and biodegradable materials from residual lignocellulosic biomass can contribute to the sustainability of...

Drying behavior of hydratable alumina-bonded refractory castables

Abstract: The drying behavior of a hydratable alumina-bonded (HAB) refractory castable was evaluated by thermogravimetric tests and compared with an ultra-low cement composition (CAC). The key properties of monolithic refractory dry-out performance, such as fluid permeability and mechanical strength, were also determined. The results showed significant differences among the drying profiles ascribed to the distinct hydrated binding phases, which affect the castables’ physical properties to a differing extent. The consequences of these features on the explosive spalling tendencies of the compositions are discussed.

Synthesis of Fine Micro-sized BaZrO3 Powders Based on a Decaoctahedron Shape by the Microwave-Assisted Hydrothermal Method

Abstract: Micro-sized decaoctahedron BaZrO3 powders were synthesized by means of a hydrothermal microwave method at 140 °C for 40 min. The X-ray diffraction, Raman, UV−visible, and inductively coupled plasma atomic emission (ICP-AES) spectroscopy, as well as measurements of photoluminescence (PL) emission, were used for monitoring the formation of a perovskite phase with random polycrystalline distortion in the structure. Two emissions at 477 and 526 nm were accompanied by increase in the gap values, indicating the existence of different emission mechanisms. A theoretical model derived from previous first principle calculations allow us to discuss the origin of the photoluminescence emission in BaZrO3 powders which can be related to the local disorder in the network of both ZrO6 octahedral and dodecahedral (BaO12) hence forming the constituent polyhedron of BaZrO3 system. Initial observations of a novel morphology of the BaZrO3 perovskite crystal growth based on decaoctahedron shape is demonstrated and indirectly r...