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1 – 10 of 14Heloísa Alves de Figueiredo Sousa, Josemar Gonçalves de Oliveira Filho, Mariana Buranelo Egea, Edilsa Rosa da Silva, Dirceu Macagnan, Marcio Pires and José Peixoto
Banana is an important tropical fruit with high demand in the market. The ripe fruits are less resistant to transport making logistics difficult. Moreover, as a climacteric fruit…
Abstract
Purpose
Banana is an important tropical fruit with high demand in the market. The ripe fruits are less resistant to transport making logistics difficult. Moreover, as a climacteric fruit, it has a short post-harvest shelf life. Edible coatings/films, including active substances, have been used as an alternative for preserving fruits and vegetables during post-harvest period. The purpose of this study was to evaluate the incorporating clove essential oil on the properties of cassava starch films and their effect on the post-harvest quality of different banana varieties.
Design/methodology/approach
Cassava starch films incorporating clove essential oil were developed and the films were characterized with respect to moisture, thickness, solubility, water vapor permeability (WVP), biodegradability, color and in vitro antifungal activity. Cultivars such as Prata-Anã, Grand Nine, BRS Tropical and BRS Conquista were coated with cassava starch, cassava starch film with clove essential oil (CSEO) and polyvinyl polychloride (PVC). The quality of fruits was monitored during eight storage days using mass loss, total soluble solids content (TSS) and titratable acidity (TTA).
Findings
Incorporation of clove essential oil significantly increased film thickness, reduced moisture content, solubility and WVP (p < 0.05) and did not affect the biodegradability and color of the films. The essential oil incorporated films showed antifungal activity against the fungi Colletotrichum gloeosporioides and Colletotrichum musae, but not against the yeast Saccharomyces bourladii. CSEO and PVC coating were more efficient in reducing the mass loss, SS content and TTA of the coated fruits in all varieties studied. Both CSEO and PVC coatings improve the quality attributes such as TSS and TTA and reduced mass loss, of the banana varieties such as Prata-Anã, Grand Nine, BRS Tropical and BRS Conquista during storage.
Originality/value
The active film with essential oil showed antifungal activity and essential oil can be incorporated into other food systems. This study approaches a new possibility of film coating with essential oil for a banana that showed minimum weight loss and satisfactory quality and increased shelf life. This film coating demonstrates biodegradable characteristics that could be eco-friendly and sustainable to consumers.
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Minelle E. Silva, José Milton de Sousa-Filho, Amanda Pruski Yamim and Abílio Peixoto Diógenes
The purpose of this paper is to investigate the relationship between consumers’ skepticism and green consumption in different economies by exploring antecedents and consequences…
Abstract
Purpose
The purpose of this paper is to investigate the relationship between consumers’ skepticism and green consumption in different economies by exploring antecedents and consequences of skepticism.
Design/methodology/approach
Using a cross-country approach, with data from Brazil and France, the relationships between green skepticism and downstream consequences (e.g. intention to purchase green products) were analyzed using the partial least squares path modeling with the results of 996 questionnaires.
Findings
Contradicting previous research, the authors found that in France, green skepticism represents consumers’ increased green advertising elaboration, not a disbelief in companies’ claims, and it is associated with greater intentions to make green purchases. Meanwhile, in Brazil, green skepticism represents consumers’ disbelief, which is associated to consumers greater suspicion toward (and distance from) companies’ claims in such country. This study shows that the role of skepticism and the valence of its effect on green attitudes depend on market relationships.
Research limitations/implications
The authors promote the importance of investigating the different meanings of skepticism across countries, what can spill over on research of other marketing aspects, such as advertising elaboration. Managers should consider the importance of consumers’ doubts and skepticism as a useful element that can be explored in green advertising effectiveness.
Practical implications
Managers should consider the importance of consumers’ doubts and skepticism as a useful element that can be explored in green advertising effectiveness.
Originality/value
This research examines an underexplored debate on the role of green skepticism in different economies and demonstrates the nuances green advertising impact on both markets.
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Gustavo Alves de Melo, Maria Gabriela Mendonça Peixoto, Samuel Borges Barbosa, Maria Cristina Angélico Mendonça, Thiago Henrique Nogueira, José Baltazar Salgueirinho Osório de Andrade Guerra, Luiz Gonzaga de Castro Júnior, André Luiz Marques Serrano and Lucas Oliveira Gomes Ferreira
The aim of this study was to evaluate the performance of fuel flow processes in a network of eight gas stations, located in the mesoregion of Alto Paranaíba and Triângulo Mineiro.
Abstract
Purpose
The aim of this study was to evaluate the performance of fuel flow processes in a network of eight gas stations, located in the mesoregion of Alto Paranaíba and Triângulo Mineiro.
Design/methodology/approach
Two multi-criteria decision support methods were applied, respectively, of a statistical and mathematical nature, namely, Principal Component Analysis (PCA) and Data Envelopment Analysis (DEA). The research method used was quantitative, with a brief complement of qualitative research, and descriptive in purpose, supported by the inductive method. The data collection stage took place with the support of interviews, with the application of a structured questionnaire, and non-probabilistic sampling, for convenience.
Findings
It was possible to verify that the gas station that stood out the most was station 2 (GS2), which achieved maximum efficiency, a fact that can be justified by the analysis resulting from the application of PCA, as for the product purchase variable (PP), the GS2 is the one that buys the most fuel, and is also the one with the largest storage capacity (C), and the highest volume of product sales (PS), which suggests signs of balance between supply and demand for this station, justifying its prominence.
Research limitations/implications
The limitations of the study were related to the DEA technique, which requires a number of variables/indicators three times smaller than the number of DMUs considered, and the difficulty in obtaining financial data on the DMUs analyzed. Considering the security and anonymity of the gas station network, it was not possible to use this data.
Practical implications
The performance assessment of fuel flow processes carried out in this study promotes the efficient use of available resources as well as identifying efficient DMUs that represent benchmarks for improving management processes and performance of inefficient DMUs.
Social implications
From a social perspective, this study promotes the improvement of the quality of flow processes and effective management of the fuel supply chain, ensuring the safe storage and transportation of fuels to customer supply. Performance management in this sector moves other sectors of the economy, since an efficient unit represents a balance between supply and demand, and consequently, boosts the regional economy, promoting economic growth of the population. Hiring qualified labor for this purpose also represents one of the implications of the study. From an environmental perspective, optimizing flow processes generates a reduction in greenhouse gas emissions and encourages the formulation of public policies aimed at consolidating sustainable practices.
Originality/value
Performance management applied to the context of the fuel supply chain is a relevant topic that has been little explored in scientific research, with a low level of information detail. This study using the inductive method allows the generalization and replication of this management pattern in other organizations in the sector in order to increase the efficiency of the fuel distribution system, with the perspective of maximizing outputs and reducing input consumption. In this aspect, the study introduces possibilities for advancement in social and environmental perspectives based on the effective management of fuel logistics.
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Delfim Soares, Manuel Sarmento, Daniel Barros, Helder Peixoto, Hugo Figueiredo, Ricardo Alves, Isabel Delgado, José C. Teixeira and Fátima Cerqueira
This study aims to investigate the effect of bismuth addition (up to 30 Wt%) on the microstructure and electrical conductivity of a commercial lead-free alloy (SAC405) near the…
Abstract
Purpose
This study aims to investigate the effect of bismuth addition (up to 30 Wt%) on the microstructure and electrical conductivity of a commercial lead-free alloy (SAC405) near the solder/substrate soldered joint. The system under study is referred in this work as (SAC405 + xBi)/Cu, as Cu is the selected substrate in which the solder was casted. The electrical resistivity of this system was investigated, considering Bi addition effect on the local microstructure and chemical composition gradients within that zone.
Design/methodology/approach
Solder joints between Cu substrate and SAC405 alloy with different levels of Bi were produced. The electrical conductivity along the obtained solder/substrate interface was measured by four-point probe method. The microstructure and chemical compositions were evaluated by scanning electron microscopy/energy dispersive spectroscopy analysis.
Findings
Two different electrical resistivity zones were identified within the solder interface copper substrate/solder alloy. At the first zone (from intermetallic compound [IMC] until approximately 100 μm) the increase of the electrical resistivity is gradual from the substrate to the solder side. This is because of the copper substrate diffusion, which established a chemical composition gradient near the IMC layer. At the second zone, electrical resistivity becomes much higher and is mainly dependent on the Bi content of the solder alloy. In both identified zones, electrical resistivity is affected by its microstructure, which is dependent on Cu and Bi content and solidification characteristics.
Originality/value
A detailed characterization of the solder/substrate zone, in terms of electrical conductivity, was done with the definition of two variation zones. With this knowledge, a better definition of processing parameters and in-service soldered electronic devices behavior can be achieved.
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Ana Maria F. Almeida and Maurício Ernica
With just a small proportion of the population holding a college degree, the material and symbolic advantages of higher education are quite substantive in Brazil. In the last…
Abstract
With just a small proportion of the population holding a college degree, the material and symbolic advantages of higher education are quite substantive in Brazil. In the last decade, social demand led to the expansion of public universities and the adoption of affirmative actions. Using data from four public universities in the state of São Paulo, the paper shows an increase in the numbers of students from lower-income and less educated families. Their relative inclusion, however, has reproduced the traditional social segmentation in Brazilian higher education, keeping access to prestigious majors more difficult to those with fewer resources.
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Andreia Carvalho, Sergio Jesus Teixeira, Leonilde Olim, Sancha de Campanella and Teresa Costa
The aim of this study is to obtain a broader knowledge of innovative pedagogical practices in higher education, by analysing the particular case of the Higher Institute of…
Abstract
Purpose
The aim of this study is to obtain a broader knowledge of innovative pedagogical practices in higher education, by analysing the particular case of the Higher Institute of Administration and Languages (ISAL). The literature review reveals a gap in this scientific field, and filling this gap is as imperative as the need to articulate higher education with the Students' Profile by the End of Compulsory Schooling.
Design/methodology/approach
This research adopts a qualitative methodological approach, in order to analyse the students and teachers' perceptions of the active learning methodologies implemented at ISAL. Data were collected from a closed-ended questionnaire, aimed at a population composed of students and teachers.
Findings
The literature review reveals a gap in this scientific field, particularly in Portugal. Filling this gap is as imperative as the need to articulate higher education with the Students' Profile by the End of Compulsory Schooling.
Practical implications
With the adoption of this methodological approach, this research intends to verify not only whether the innovative pedagogical practices addressed in the literature review are implemented in this institution, but also to identify obstacles to their implementation. With regard to the results, several pedagogical innovation practices are already implemented, even though some limitations to their implementation are identified.
Originality/value
This research allows identifying indicators that are essential to outline an intervention plan in the pedagogical practices implemented at ISAL or other higher education institutions and contributes to assessing the current state of pedagogical practices in higher education.
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Ricardo Manuel Da Costa Melo, Eunice Cristina Ribeiro Lopes, José Luis Coelho Vilas Boas, Lúcia Batista Santos, Sandra Cristina Ferreira Amaro, João Miguel Almeida Ventura-Silva and Isabel de Jesus Oliveira
The impact of dependence on self-care on people’s lives is very significant, with consequences for the person and their caregivers. The purpose of this study is to map the…
Abstract
Purpose
The impact of dependence on self-care on people’s lives is very significant, with consequences for the person and their caregivers. The purpose of this study is to map the evidence on the factors that influence the empowerment of the person dependent on self-care on returning home.
Design/methodology/approach
Scoping review according to the criteria proposed by the Joanna Briggs Institute: population (people with a dependence on self-care), concept (factors that influence training) and context (return home after hospitalization in a medical-surgical context). The research was carried out from March 1 to April 30, 2022, in the databases CINAHL and MEDLINE (via EBSCO), Scielo, LILACS, Cuiden and MedicLatina; Gray literature searched RCAAP, DART-Europe and OpenGrey. Studies published in Portuguese, Spanish and English were included, with no time limit.
Findings
One hundred and eighty-one articles were obtained, which, after analysis according to the criteria, resulted in seven studies included for review, ranging from 2007 to 2021, with a level of evidence between 2. c and 4. a (according to Joanna Briggs Institute), and two thematic areas/four categories emerging.
Research limitations/implications
The need for information and training, the relationship and proximity with the health-care team, the design of nursing care targeted at the person’s level of dependence, education, gender, type of surgical intervention and postoperative period, physical space and lack of privacy and audiovisual media.
Originality/value
The perception of these factors proves to be important in the person’s training process, with the nurse’s role being highlighted due to their emphasis on the transition home.
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Eduardo José Lima, Marcelo Henrique Souza Bomfim and Miguel Augusto de Miranda Mourão
Several studies have aimed to develop robotic systems which move in transmission lines. Until this moment, all of them have a high weight and cost associated with the equipment…
Abstract
Purpose
Several studies have aimed to develop robotic systems which move in transmission lines. Until this moment, all of them have a high weight and cost associated with the equipment and reduced battery autonomy time. In this context, this paper aims to propose the POLIBOT (POwer Lines Inspection roBOT) with low cost and weight, enabling the movement over the lines and an easier installation and remove.
Design/methodology/approach
The designed robot uses the Profiles Manufacturing Methodology (PMM). The construction of the robot mechanical structure uses modularized aluminum parts built through square profiles. Thus, it’s possible a drastic reduction in production time as well as cost reduction and weight when comparing this method with other manufacturing processes like foundry, for example. For hardware and software systems, the use of free and open source software causes a significant reduction in cost and project execution time. The benefits of using open source systems are immeasurable, both from academic and industrial applications.
Findings
The POLIBOT platform is one solution to the problem of inspection in power lines. With this robot, more lines are maintained with lower time. In its constructive aspect, the robotic mechanism is designed using principles of bioengineering. The use of this principle was successful, considering that obstacle transposition is performed with stability and low energy consumption.
Research limitations/implications
The suggestion for future researches is to replace the battery for solar energy and construction in polymeric material to avoid high magnetic fields.
Practical implications
The commercial application is evident because manual inspections are inefficient, very expensive and dangerous. Thus, it is growing the number of researches that develop mechatronics systems for this kind of inspection.
Social implications
The impact is the reduction of accidents because the present procedure requires precision of movements, where the pilot and electrical technician are close to high electrical and magnetic fields. In addition, for some tasks, the worker has to walk on the line to reach some important points. Thus, those tasks involve high risk of death.
Originality/value
The PMM methodology represents an innovation to the state of the art because others robotic mechanisms proposed for inspection tasks present total structure mass between 50 and 100 kg and POLIBOT has only 9 kg. Other fact is its price for implementation as this robot used the robot operating system (ROS) framework, what dispense the use of licenses. Other important features are that the robot performs the tasks autonomously, which reduces errors introduced by the operator and its low manufacturing cost as compared with other projects.
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Olga Maria Formigoni Carvalho Walter and Edson Pacheco Paladini
This paper aims to investigate Lean Six Sigma (LSS) in the Brazilian context, seeking to identify its main characteristics and opportunities for future research.
Abstract
Purpose
This paper aims to investigate Lean Six Sigma (LSS) in the Brazilian context, seeking to identify its main characteristics and opportunities for future research.
Design/methodology/approach
This study focuses on a literature review in the area of production engineering and operations management, where 104 relevant scientific publications were identified.
Findings
The results show that the most important critical success factor for integrating LSS in Brazil is top management support and commitment. LSS integration occurs predominantly in large industrial companies, being incipient in small and medium-sized enterprises. In general, there is no structured way of applying LSS. A standard framework for LSS is still lacking.
Research limitations/implications
This study is limited to a sample that only comprises Brazilian scientific studies.
Practical implications
Professionals and practitioners can understand the evolution of LSS through practical applications and the main LSS tools used in both the industrial and services sectors. It also points out the critical success factor for the implementation of LSS. The study highlights several roadmaps for LSS implementation adopted by large and modern Brazilian automotive industries based on a robust technological base. This study also contributes to expanding the evidence base of LSS application, both in Brazil and in other countries.
Originality/value
Some suggestions are proposed to clarify the structure and complexity of integrated implementation of LP and SS as well as expand the LSS application in small and medium-sized enterprises. This study is the first to discuss the current situation of LSS in Brazil and provide suggestions to expand LSS in the country. Comparisons of Brazilian LSS literature review with researches of others countries are also presented.
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