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Article
Publication date: 25 October 2019

Alexandre Bevilacqua Leoneti, Danilo Vitorino dos Santos, Renato Santos da Silva, Alessandra Henriques Ferreira, Adriano César Pimenta and Sonia Valle Walter Borges de Oliveira

The purpose of this paper is to propose a process management framework for Chemical Waste Treatment Laboratories (CWTL) that can be used as a management tool to identify and…

456

Abstract

Purpose

The purpose of this paper is to propose a process management framework for Chemical Waste Treatment Laboratories (CWTL) that can be used as a management tool to identify and manage critical process.

Design/methodology/approach

Proposition of a generic classification for categories of chemical waste; use of the ABC analysis as a tool for analysis of priority in relation to the inputs of an CWTL; use of the process matrix (variety vs volume) to identify the key resources required to perform the activities of a CWTL; and use of mapping process techniques to map the processes defined and calculate times.

Findings

The proposed framework was applied to a CWTL at University of São Paulo, Brazil, and showed that the high variability of demand is a significant factor in the management of this laboratory, requiring processes that are flexible to meet this demand. The results showed that the applicability of the production and operations management theories within the scope of process management of CWTLs, proved to be useful tools for improving the treatment efficiency of chemical waste in these facilities.

Originality/value

The novelty of this work is in the fact of using production and operations management tools in the management of CWTLs to propose diagnoses to improve the management of their processes. The proposition of a comprehensive classification for chemical wastes generated in CWTLs is also highlighted.

Details

Business Process Management Journal, vol. 26 no. 2
Type: Research Article
ISSN: 1463-7154

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Publication date: 23 March 2017

Barbara de Lima Voss, David Bernard Carter and Bruno Meirelles Salotti

We present a critical literature review debating Brazilian research on social and environmental accounting (SEA). The aim of this study is to understand the role of politics in…

Abstract

We present a critical literature review debating Brazilian research on social and environmental accounting (SEA). The aim of this study is to understand the role of politics in the construction of hegemonies in SEA research in Brazil. In particular, we examine the role of hegemony in relation to the co-option of SEA literature and sustainability in the Brazilian context by the logic of development for economic growth in emerging economies. The methodological approach adopts a post-structural perspective that reflects Laclau and Mouffe’s discourse theory. The study employs a hermeneutical, rhetorical approach to understand and classify 352 Brazilian research articles on SEA. We employ Brown and Fraser’s (2006) categorizations of SEA literature to help in our analysis: the business case, the stakeholder–accountability approach, and the critical case. We argue that the business case is prominent in Brazilian studies. Second-stage analysis suggests that the major themes under discussion include measurement, consulting, and descriptive approach. We argue that these themes illustrate the degree of influence of the hegemonic politics relevant to emerging economics, as these themes predominantly concern economic growth and a capitalist context. This paper discusses trends and practices in the Brazilian literature on SEA and argues that the focus means that SEA avoids critical debates of the role of capitalist logics in an emerging economy concerning sustainability. We urge the Brazilian academy to understand the implications of its reifying agenda and engage, counter-hegemonically, in a social and political agenda beyond the hegemonic support of a particular set of capitalist interests.

Details

Advances in Environmental Accounting & Management: Social and Environmental Accounting in Brazil
Type: Book
ISBN: 978-1-78635-376-4

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Article
Publication date: 11 March 2014

Grazielle de Oliveira Setti, Jorge Vicente Lopes da Silva, Marcelo Fernandes de Oliveira, Izaque Alves Maia, Dosil Pereira de Jesus, Raluca Savu, Thebano Emilio de Almeida Santos, Rita de Cássia Zacardi de Souza and Ednan Joanni

The purpose of this paper is to characterize polyamide parts prepared by the SLS process using techniques that are dependent on surface properties and compare the results to…

631

Abstract

Purpose

The purpose of this paper is to characterize polyamide parts prepared by the SLS process using techniques that are dependent on surface properties and compare the results to density measurements in order to assess which technique better reflects the degree of densification achieved using different laser power levels.

Design/methodology/approach

Fabrication of Nylon 12 (Duraform PA) samples and their characterization by apparent density measurements, perfilometry, Raman spectroscopy, scanning electron microscopy, specific surface area and contact angle measurements.

Findings

Methods dependent on surface analysis are not suitable indicators of the degree of sample densification. Among the surface methods, the results from Raman spectroscopy are the ones with the best performance. Incipient sintering of the superficial layers and raw material powder on the surface, inherent to the parts made by the SLS process, strongly interfere with the characterization.

Originality/value

Quantitative comparison of a number of surface probing methods for monitoring densification of SLS parts. Characterization of sample surfaces with and without raw material powder.

Details

Rapid Prototyping Journal, vol. 20 no. 2
Type: Research Article
ISSN: 1355-2546

Keywords

Available. Open Access. Open Access
Article
Publication date: 22 October 2019

Renato Ribeiro Nogueira Ferraz, Marcus Vinícius Cesso da Silva, Renan Antônio da Silva and Luc Quoniam

The purpose of this paper is to present the use of a free code computational tool, Patent2net, in the search of patents for the implementation of distance learning aimed at…

1305

Abstract

Purpose

The purpose of this paper is to present the use of a free code computational tool, Patent2net, in the search of patents for the implementation of distance learning aimed at Continuing Medical Education.

Design/methodology/approach

This technical report is based on the extraction, organization and availability, in the format of graphs and dynamic tables, and also based on information in other patents on the subject, made available in the Espacenet database.

Findings

As a result, it was possible to identify a Chinese patent, free for reproduction in Brazil, which describes an e-learning system that simulates 3D scenarios for training nursing teams.

Research limitations/implications

The paper has used one unique patent database, but containing more than 100m documents.

Practical implications

The selected patent can contribute to the improvement of care and behavioral techniques of the health professionals.

Social implications

The training of health professionals can improve the public and supplementary health systems.

Originality/value

This is the first paper in that de technometric analisys of patents was used to solve a problem regarding the training of health professionals.

Details

Revista de Gestão, vol. 27 no. 1
Type: Research Article
ISSN: 2177-8736

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Article
Publication date: 29 October 2021

Edwin Sallica-Leva, Fernando Henrique da Costa, Cláudio Teodoro Dos Santos, André Luiz Jardini, Jorge Vicente Lopes da Silva and João Batista Fogagnolo

This paper aims to describe the obtainment of Ti-6Al-4V parts with a hierarchical arrangement of pores by additive manufacturing, aiming at designing orthopedic implants.

383

Abstract

Purpose

This paper aims to describe the obtainment of Ti-6Al-4V parts with a hierarchical arrangement of pores by additive manufacturing, aiming at designing orthopedic implants.

Design/methodology/approach

The experimental methodology compares microstructural and mechanical properties of Menger pre-fractal sponges of Ti-6Al-4V alloy, manufactured by laser powder bed fusion (LPBF) and electron beam powder bed fusion (EBPBF), with three different porosity volumes. The pore arrangement followed the formation sequence of the Menger sponge, with hierarchical order from 1 to 3.

Findings

The LPBF parts presented a martensitic microstructure, while the EBPBF parts presented an α + ß microstructure, independently of its wall thickness. The LPBF parts presented higher mechanical resistance and effective stiffness than the EBPBF parts with similar porosity volume. The stiffness values of the Menger pre-fractal sponges of Ti-6Al-4V alloy, between 4 and 29 GPa, are comparable to those of the cortical bone. Furthermore, the deformation behavior presented by the Menger pre-fractal sponges of Ti-6Al-4V alloy did not follow the Gibson and Ashby model's prediction.

Originality/value

To the best of the authors' knowledge, this is the first study to obtain Menger pre-fractal sponges of Ti-6Al-4V alloy by LPBF and EBPBF. The deformation behavior of the obtained porous parts was contrasted with the Gibson and Ashby model's prediction.

Details

Rapid Prototyping Journal, vol. 28 no. 4
Type: Research Article
ISSN: 1355-2546

Keywords

Available. Open Access. Open Access
Article
Publication date: 22 March 2021

Yuri Basile Tukoff-Guimarães, Claudia Terezinha Kniess, Renato Penha and Mauro Silva Ruiz

The purpose of this paper is to assess how technology transfer offices (TTOs) of a public university of the state of São Paulo use patent valuation methods in the process of using…

1957

Abstract

Purpose

The purpose of this paper is to assess how technology transfer offices (TTOs) of a public university of the state of São Paulo use patent valuation methods in the process of using developed technology value and transferring technology to industry.

Design/methodology/approach

This study is an exploratory qualitative investigation based on a case study conducted in a public university in the state of São Paulo. The university has a TTO and an internal structure for technology transfer. In-depth interviews were conducted with the TTO manager about patent valuation and the answers given were analysed.

Findings

The results on how TTOs use patent valuation methods in the process of assigning value to technology indicate which factors facilitate and which factors hinder the valuation of patents in technologies developed at universities.

Research limitations/implications

The possible lack of data disclosure due to confidentiality regarding royalties and trading fees makes further comparisons between Brazilian public universities difficult. Therefore, this study recommends that further studies on patent valuation and technology transfer process at private universities, research institutes and public and private companies should be performed.

Practical implications

In the practice, this study contributes to companies and TTOs by increasing their synergies in licensing negotiations, as well as by reducing the gap of information, between the business parties for assignment and transfer of technologies. With regard to theoretical contribution, this study can cite advances in the methods to measure the financial benefits arising from the valuation of technologies embedded in the patents.

Originality/value

Owing to the lack of research on the methods of valuation used by TTOs of Brazilian universities, the present study can be useful in serving as a theoretical source for future research and in supporting future TTO negotiations in the process of transferring technologies to productive industry.

Details

Innovation & Management Review, vol. 18 no. 1
Type: Research Article
ISSN: 2515-8961

Keywords

Available. Open Access. Open Access
Article
Publication date: 9 February 2018

Renato Cader Da Silva, Luciana Betiol, Teresa Villac and Raquel Nonato

The purpose of this paper is to report the experience of the Federal Public Institution with sustainable public procurement through the mechanism of shared acquisitions.

3563

Abstract

Purpose

The purpose of this paper is to report the experience of the Federal Public Institution with sustainable public procurement through the mechanism of shared acquisitions.

Design/methodology/approach

The analysis adopted a qualitative approach and an empirical investigation of MPF’s experience, based on a documentary research and participant observation.

Findings

The results allow the authors to demonstrate the economic, environmental and social advantages of the procurement made by MPF, thus granting to this new model of acquisition governance, the adherence to the organization’s institutional mission.

Research limitations/implications

This is a single case study.

Practical implications

It is a promising path that optimizes the institution’s use of its budgetary, human, logistical and information technology resources, focusing on the quality and sustainability of public biddings.

Social implications

The process of collective construction, improvement of knowledge management, standardization, procedural and scale economies, and the use of sustainability criteria are the main reasons for the implementation of the sustainable shared acquisitions system in the institution.

Originality/value

This is a development process of a new paradigm of procurement at MPF.

Details

Revista de Gestão, vol. 25 no. 1
Type: Research Article
ISSN: 2177-8736

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Article
Publication date: 4 July 2022

Ana Flávia Ramos, Gabriela da Rocha Lemos Mendes, Renato Souza Cruz, Fabiane Neves Silva, Geany Peruch Camilloto, Handray Fernandes de Souza, Juliana Pinto de Lima, Caroline Liboreiro Paiva and Igor VIana Brandi

Baru is a fruit of the Brazilian Cerrado, important to the local economy and social culture. The use in food formulation is due to it being highly available and its nutritional…

273

Abstract

Purpose

Baru is a fruit of the Brazilian Cerrado, important to the local economy and social culture. The use in food formulation is due to it being highly available and its nutritional profile; however, the changes in the texture of products are still unclear. In this study, an experimental design was conducted to develop cakes by replacing different levels of wheat flour with baru nut flour, and comparing them.

Design/methodology/approach

Cakes were developed with 20, 40, 60, and 80 replacement of wheat flour by baru nut flour and compared with standard formulation (100% wheat flour). The physical-chemistry composition of the flour, nutritional composition of the cakes and texture profile analysis were evaluated.

Findings

Baru nut flour showed greater protein, lipids, and ash than wheat flour, and this result was also observed in the cakes developed. The cake with 80% of almond baru flour showed an increase of 60.3% in protein. The texture profile analysis showed that the addition of baru nut flour affected the texture of products. The cakes showed more hardness and chewiness; however, the springiness and cohesiveness were decreased.

Originality/value

The findings of this study demonstrate that baru nut flour is a great option as a new ingredient for bakery products, due the increase of protein. This is the first study analyzing the effect of baru nut flour addition on the texture profile of bakery products. These results can orientate future studies, especially sensory assays.

Details

British Food Journal, vol. 125 no. 4
Type: Research Article
ISSN: 0007-070X

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Article
Publication date: 11 November 2021

Joan Carlos Alves Pereira, Wilton Pereira da Silva, Renato Costa da Silva, Cleide Maria Diniz P.S. e Silva and Josivanda Palmeira Gomes

To describe water absorption by the rice grains over time, diffusion and empirical models were used. Also, an optimization software was developed in this study to determine…

98

Abstract

Purpose

To describe water absorption by the rice grains over time, diffusion and empirical models were used. Also, an optimization software was developed in this study to determine parameters and their uncertainties for the diffusion models (LS Optimizer, for partial differential equations). Parameters (and their uncertainties) for empirical models were determined by LAB Fit Curve Fitting Software.

Design/methodology/approach

Heat and mass diffusion phenomena are found in various processes of technological interest, including pasteurization, drying and water immersion of agricultural products, among others. The objective of this work was to study the process of water absorption by rice grains with and without husk, using diffusion and empirical models to describe the absorption kinetics. Rice grains were immersed (approximately 10 g for each experiment) in drinking water maintained at constant temperatures of 28, 40 and 50 C. In the experiments, the water contents absorbed by rice grains over time were obtained by the gravimetric method.

Findings

Among empirical models, Peleg was the most satisfactory to describe the kinetics of water absorption by rice without husk, while the Silva et alii model had the best statistical indicators for rice with husk. It was also verified that a diffusion model with boundary condition of the first kind showed the best (or equivalent) results in the description of all processes of kinetics of water absorption by rice grains, with and without husk. For grains without husk, the effective mass diffusivities were (1.186 ± 0.045) × 10−9, (1.312 ± 0.024) × 10−9 and (2.133 ± 0.028) × 10−9 m2 min−1, for the immersion temperatures of 28, 40 and 50C, respectively. For grains with husk, diffusivities were (0.675 ± 0.011) × 10−9 and (1.269 ± 0.017) × 10−9 m2 min−1, for temperatures of 28 and 50 C, respectively.

Originality/value

This work developed a solver for the diffusion equation in cylindrical geometry and presented the LS Optimizer software developed to determine differential equation parameters through experimental data sets.

Details

Engineering Computations, vol. 39 no. 4
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 29 March 2011

Roseane L. Silva, João N.N. Quaresma, Carlos A.C. Santos and Renato M. Cotta

The purpose of this paper is to provide an analysis of two‐dimensional laminar flow in the entrance region of wavy wall ducts as obtained from the solution of the steady…

560

Abstract

Purpose

The purpose of this paper is to provide an analysis of two‐dimensional laminar flow in the entrance region of wavy wall ducts as obtained from the solution of the steady Navier‐Stokes equations for incompressible flow.

Design/methodology/approach

The study is undertaken by application of the generalized integral transform technique in the solution of the steady Navier‐Stokes equations for incompressible flow. The streamfunction‐only formulation is adopted, and a general filtering solution that adapts to the irregular contour is proposed to enhance the convergence behavior of the eigenfunction expansion.

Findings

A few representative cases are considered more closely in order to report some numerical results illustrating the eigenfunction expansions convergence behavior. The product friction factor‐Reynolds number is also computed and compared against results from discrete methods available in the literature for different Reynolds numbers and amplitudes of the wavy channel.

Research limitations/implications

The proposed methodology is fairly general in the analysis of different channel profiles, though the reported results are limited to the wavy channel configuration. Future work should also extend the analysis to geometries represented in the cylindrical coordinates with longitudinally variable radius.

Practical implications

The error‐controlled converged results provide reliable benchmark results for the validation of numerical results from computational codes that address the solution of the Navier‐Stokes equations in irregular geometries.

Originality/value

Although the hybrid methodology is already known in the literature, the results here presented are original and further challenges application of the integral transform method in the solution of the Navier‐Stokes equations.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 21 no. 2
Type: Research Article
ISSN: 0961-5539

Keywords

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