Slope Ratio
Mostrando 1-12 de 119 artigos, teses e dissertações.
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1. Calibration Strategies Applied to Laser-Induced Breakdown Spectroscopy: A Critical Review of Advances and Challenges
Over the years, laser-induced breakdown spectroscopy (LIBS) has been reported in the literature as an alternative to traditional methods of analysis, becoming well established among spectroanalytical techniques. LIBS is a technique widely used for qualitative approaches; however, it is necessary considerable effort for use in quantitative analysis, mainly du
J. Braz. Chem. Soc.. Publicado em: 2020-12
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2. Explorando las Conceptualizaciones de la Pendiente en Estudiantes Universitarios
Abstract This article reports an investigation that explored Slope's conceptualizations in 21 university students. The data was collected with a Task-Based Interview and for its data analysis it focused on the identification of key phrases and procedures that referred to any of the eleven conceptualizations reported on the slope concept. The students evidenc
Bolema. Publicado em: 02/12/2019
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3. Mathematical models to predict growth, fillet traits, and composition of wild traíra, Hoplias malabaricus
ABSTRACT This study aimed to determine the length-weight relationship and mathematical models to predict dressed and fillet weight and yield and fillet composition of wild traíra, Hoplias malabaricus (Bloch, 1794). A total of 80 marketable-sized fish from 292.28 to 2879.57 g and 32.06 to 61.19 cm were used. The length:weight ratio was estimated using the eq
R. Bras. Zootec.. Publicado em: 25/11/2019
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4. Longitudinal Shortening of the Left Ventricle by Cine-CMR for Assessment of Diastolic Function in Patients with Aortic Valve Disease
Resumo Fundamentos: A disfunção diastólica, comumente avaliada por ecocardiografia, é um importante achado precoce na maioria das cardiomiopatias. A ressonância magnética cardíaca (RMC) frequentemente requer sequências específicas que prolongam o tempo de exame. Recentemente, métodos de imagens com monitoramento de dados (feature-tracking) foram d
Arq. Bras. Cardiol.. Publicado em: 23/09/2019
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5. A GENERALIZED ABOVEGROUND BIOMASS MODEL FOR JUVENILE INDIVIDUALS OF Rhododendron arboreum (SM.) IN NEPAL
ABSTRACT Carbon in the juvenile plants contribute significant share to the total carbon stock in forests. A precise estimate of aboveground biomass of the juvenile stages of trees is therefore very important. We developed a generalized allometric biomass model for the prediction of aboveground biomass of the juvenile individuals of Rhododendron arboreum (Sm.
CERNE. Publicado em: 09/09/2019
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6. The impact of haulroad geometric parameters on open pit mine strip ratio
Abstract The aim of the study was to analyze the impact on the strip ratio (SR) through varying haul road geometric parameters in two types of deposits, namely one with a steeper dip and a second one with a more equidimensional horizontal behavior. The SRs and the overall slope angle were compared with a base scenario, where the results show an increase in t
REM, Int. Eng. J.. Publicado em: 2019-03
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7. Analysis of the Operation of Photovoltaic Systems Installed at Federal University of Technology - Paraná in Curitiba
ABSTRACT The Federal University of Technology - Paraná (UTFPR), Campus Curitiba, has a Grid-Connected Photovoltaic System (GCPVS) of 2.1 kWp in the Green Office (GO), which has been in operation since December 2011, and until September 2017 generated little more than 13.64 MWh and a GCPVS of 10.2 kWp, in operation since February 2016. The photovoltaic panel
Braz. arch. biol. technol.. Publicado em: 29/11/2018
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8. Respiratory evaluation through volumetric capnography among grade III obese and eutrophic individuals: a comparative study
ABSTRACT BACKGROUND: Excess trunk body fat in obese individuals influences respiratory physiological function. The aims of this study were to compare volumetric capnography findings (VCap) between severely obese patients and normal-weight subjects and to assess whether there is any association between neck circumference (NC), waist-hip ratio (WHR) and VCap
Sao Paulo Med. J.. Publicado em: 15/01/2018
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9. Liquid-Liquid Equilibrium Data, Viscosities, Densities, Conductivities, and Refractive Indexes of Poly (vinyl pyrrolidone)+ tri-sodium Citrate + Urea Aqueous Two-Phase Systems at Different pH
Abstract The present study investigated liquid-liquid equilibria of polyvinylpyrrolidone (PVP) K30 + tri-sodium citrate + urea (5% and 10% mass) aqueous two-phase systems at 25°C and pH values of 6.2, 7.4, and 10.0. Results showed that the binodal was displaced toward higher concentrations as the urea concentration increased. The effect of pH, polymer/salt
Braz. J. Chem. Eng.. Publicado em: 2017-07
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10. MODELING OF THE SOLVENT EXTRACTION EQUILIBRIUM OF URANIUM (VI) SULFATE WITH ALAMINE 336
Abstract The present study investigated the solvent extraction of uranium from sulfate acid solutions using Alamine 336 as an extractant dissolved in commercial kerosene Exxsol D-100 and 5% v/v of tridecanol as a modifying agent at room temperature (25±2) ºC and an aqueous/organic volumetric ratio of unity. Experiments were carried out at typical concentra
Braz. J. Chem. Eng.. Publicado em: 2017-01
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11. Comparison of Methods for Determining Precompression Stress Based on Computational Simulation
ABSTRACT There are many methods for determining precompression stress (σp), whose value is affected by the slope of the soil compression curve. This study was designed to evaluate the hypothesis that for a certain compression curve all methods used to determine σp present the same value and accuracy. The aim of this study was to compare the accuracy and th
Rev. Bras. Ciênc. Solo. Publicado em: 25/07/2016
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12. Distribution of stress in greenhouses frames estimated by aerodynamic coefficients of Brazilian and European standards
ABSTRACT Widely disseminated in both national and international scenarios, greenhouses are agribusiness solutions which are designed to allow for greater efficiency and control of the cultivation of plants. Bearing this in mind, the construction of greenhouses should take into consideration the incidence of wind, and other such aspects of comfort and safety,
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-04