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Lipase from Aspergillus niger obtained from mangaba residue fermentation: biochemical characterization of free and immobilized enzymes on a sol-gel matrix

Abstract: In this study, mangaba residue (seeds) was used as a substrate for Aspergillus niger lipase production by solid-state fermentation. The partially purified enzyme was efficiently immobilized in a sol-gel matrix by covalent bonding with an immobilization yield

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Safety index for agricultural tractors

Abstract: The manufacture of agricultural machinery should follow the criteria that specify the existence and standardization of components and security systems, so as to make them safe. The aim of this study was to establish a checklist to classify agricultural tracto

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Influence of coarse aggregate on concrete’s elasticity modulus

Abstract: The modulus of elasticity of concrete is an important property because it is crucial for the control of deformation. The impossibility of obtaining concrete with higher elasticity modulus rates may cause economic liabilities due to the need for larger structu

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Roughness study on homogeneous layer panels manufactured from treated wood waste

Abstract: Natural resource exploration is growing, highlighting woods and joinery waste, wood industries and the like. This study presents homogeneous particleboard (PPH) roughness characterization manufactured from treated wood waste. Normative document with values of

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Intelligent system for improving dosage control

Abstract: Coagulation is one of the most important processes in a drinking-water treatment plant, and it is applied to destabilize impurities in water for the subsequent flocculation stage. Several techniques are currently used in the water industry to determine the be

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Flexural properties of four fast-growing eucalypts woods deteriorated by three different field tests

Abstract: Durability is a wood characteristic determined by several factors, making it difficult to investigate the service life of pieces designated for outdoor use. In this study, the decaying of juvenile and adult woods of four fast-growing eucalypts from southern B

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Effects of different cutting strategies on G-ratio in through-feed center-less grinding

Abstract: Grinding is the main manufacturing process used in finishing operations. Center-less grinding is widely used in the production of auto parts e.g. roller bearings, valve stem and stem of shock absorbers. Center-less grinding is used in large-scale production d

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Estimation of tracked vehicle suspension parameters

Abstract: This work aims to estimate the suspension stiffness and damping coefficient of a tracked vehicle by using an inverse problem technique based on Particle Swarm Optimization (PSO) and on Random Restricted Window (R2W). The tracked vehicle has ten road wheels. E

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Modeling and experimental tests of a copper thermosyphon

Abstract: Electrical energy, solar energy, and/or direct combustion of a fuel are the most common thermal sources for home water heating. In recent years, the use of solar energy has become popular because it is a renewable and economic energy source. Among the solar c

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An optimization model for production planning in the drying sector of an industrial laundry

Abstract: In this work, an optimization model was developed for production planning in the drying sector of a real industrial laundry. Goal programming was used in order to minimize energy and labor costs, and to use of the full capacity of each piece of equipment, as

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A new class of gamma distribution

Abstract: This paper presents a new class of probability distributions generated from the gamma distribution. For the new class proposed, we present several statistical properties, such as the risk function, expansions to density and cumulative function, moment generat

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Quantifying the effect of waterways and green areas on the surface temperature
Elis Dener Lima Alves

Abstract: The cooling effects of urban parks and green areas, which form the “Park Cool Island” (PCI) can help decrease the surface temperature and mitigate the effects of urban heat islands (UHI). Therefore, the objective of this research was to know the temporal vari

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Biosorbent of macadamia residue for cationic dye adsorption in aqueous solution

Abstract: This study evaluated the adsorption capacity of the methylene blue dye in macadamia residues, in natura and chemically modified. The waste characterization was performed using SME and spectroscopy in the infrared region, indicating the presence of carboxyl, c

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Evaluation of chemical characteristics and correlation analysis with pulp browning of advanced selections of apples grown in Brazil

Abstract: In this research, the total phenolic content (TPC) and antioxidant capacity (FRAP and DPPH•⋅ assays) of pulps and peels of advanced selection of apples grown in Brazil were investigated. The correlation analyses between the activity of polyphenoloxidase enzym

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Nutritional, microbiological and sensorial characteristics of alfajor prepared with dehydrated mixture of salmon and tilapia

Abstract: Current assay deals with the preparation of alfajores with different levels (0 to 15%) of dehydrated fish mixture of salmon (10%) and tilapia (90%) to assess the sensorial characteristics and their centesimal composition and microbiological. Fish inclusion in

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Criterios Altamente Valorados / Criterios Deseables Criterios Cualitativos
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