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This study aims to develop two piezoelectric textile devices formed from different weft knitted fabric rapports (Jersey and Pique) to be applied in the renewable energy’s (RE) area.

Two different weft knitted rapports were produced with polyester (PES). The device developed has five layers: a central of poly(vinylidene fluoride) (PVDF) nonwoven, involved by two insulating layers of PES knitted fabric; and two conductive external layers, made of polypyrrole-coated PES knitted fabric. The piezoelectric textile devices were joined by sewing the five layers of the device.

The FTIR technique confirmed the β-phase in the PVDF nonwoven. This study produced and tested two different textiles devices with piezoelectric behavior, confirmed by the correlated pattern of voltage and tensile stress difference curves, showing the potential application in RE’s and sustainable energies field as smart textiles, such as devices incorporated in garments in the areas of high movement (elbow, knee, foot, fingers and hands, among others), and as an energy generator device

Textile materials with piezoelectric properties promise to advance RE’s developments due to their high material flexibility and sensitivity to the electrical response. The knitted fabric technology presents flexibility due to its construction process. Comparative studies analyzing the electrical response between knitted and woven fabrics have already been realized. However, there is a gap in terms of research scientific research regarding the comparison of the piezoelectric effect in a material that presents different knitted fabric rapports.

Given the COVID-19 Pandemic outbreak and the role of medical textiles for protection, this study aims to identify the leading research foci on using textile materials for personal protection in pandemic situations.

A systematic review and systemic analysis of the literature on the subject were performed using the process knowledge development – constructivist (ProKnow-C) methodology.

A bibliographic portfolio with 16 relevant studies was obtained. This portfolio represents the main focus of this research field, including the main filtration mechanisms, ways of disinfecting N95 respirators and proposed methods to evaluate the filtration efficiency of different materials with potential for mask development.

To the best of the authors’ knowledge, this is the first time the ProKnow-C methodology was used in the textile field. Thus, future studies can benefit from using the Proknow-C for selecting and analyzing relevant textile studies following a systematic approach.

The purpose of this paper is to present a diagnostic instrument of the maturity of Industry 4.0 technologies adapted to the textile and clothing sector and constructed based on the technological references that support this industrial evolution process.

The proposed methodology began with the systematic literature review using the SciMAT software and then a questionnaire was developed with 49 questions divided into 5 categories – demography, technologies, strategy, digital skills and benefits of the deployment.

The application in 19 different sectors and 72 people in a textile industry showed this sector is still traditional. The diagnosis results pointed that the level of implementation of Industry 4.0 is considered the first level, later advancing in this order to levels of connectivity, visibility, predictability and adaptability of the processes.

Only in one company was applied the developed instrument, in this case study, a factory that makes children's and adult clothing items located in Santa Catarina, Brazil.

Through the use of this assessment instrument, it is possible to perform an internal benchmarking at the company detecting the strong and weak points, as well as involve a multidisciplinary collaborator team.

The comparisons and improvements may be carried out per dimension or sector, which motivates the constant application and assessment of improvements. The instrument to diagnose the maturity of Industry 4.0 technologies in the textile and clothing sector is considered an effective tool for application in a single company or to have its use expanded in a new piece of research to the entire industrial textile segment.

The developed diagnostic tool may be used for both the internal assessment of the company and its placement relative to its competitors, involving several companies from the same sector. It is possible to know about what level of Industry 4.0 maturity the company is and after benchmarking by others and improve.

This paper aims to present a systematic review of the development process of Industry 4.0 in the textile and apparel sector, as well as to show some concepts, examples found in the literature on the application of the principles and technologies involved like the internet of things (IoT), cloud computing, Big Data, autonomous robots, three-dimensional (3D) printing, augmented reality, virtual prototyping, horizontal and vertical system integration and cybersecurity.

The methodology adopted in this study was a systematic literature review aided by the use of SciMAT, a scientific mapping software. Documents were collected from the Web of Science and Scopus database from 2011 to 2020 using the words “Textile” and “Industry 4.0” that result in 865 documents and 115 were analyzed.

The literature review showed that the textile industry in the international context is at an incipient stage of the implementation of Industry 4.0. The main aspects of Industry 4.0 that were identified in the textile industry initially focus on the implementation of technologies aimed at computerization and automation of processes, whose main focuses are increasing productivity and reducing costs. Projects for the implementation of augmented reality and 3D printing and simulation technologies in the textile industry, clothing and apparel area are still embryonic, normally implemented through tools and software oriented toward the creation and development of new models of processes, products and commerce.

The search in the databases was carried out on October 17, 2020. Therefore, for future study, other combinations of search terms and time update are suggested, in addition to including more databases besides Scopus and Web of Science.

This literature review served as the basis for the development of a questionnaire that was applied to 72 people in an industry in the clothing sector, located in the state of Santa Catarina, southern Brazil.

The benefits of industry 4.0 are perceived in people with its implementation, such as a reduction in energy consumption of around 15%, an increase of up to 25% in work efficiency, in addition to more assertive decision-making, improvement of processes and balance between life and work.

Machine learning, artificial intelligence, smart fabrics, IoT, supply chain management, environmental protection, Big Data, autonomation and cyber physics were the strongest terms found, consolidating as a prominent field for current and future studies. From emerging and/or still unexplored areas of Industry 4.0 in the textile sector, there is real-time communication, computer applications, carbon, fibers, health care and sustainable development. Some strategic actions that are taking place in some countries are summarized and in Brazil the adoption rate is 29% for this sector, revealing itself as a needy area and suitable for the development of studies that address the subject.

Different studies relate the presence of depression to lower cognitive performance and higher functional dependence in older people; however, this is not entirely clear. The purpose of this study is to validate the existence between the association of these conditions.

Cross-sectional and descriptive study was conducted in which the memory, metamemory and global functionality test performance of depressed and non-depressed participants was compared between two groups, one cognitively healthy and other with cognitive decline. The participants were 420 older adults, with an average age of 69 and five years of schooling.

The importance of describing cognitive performance in older adults with depression may provide evidence to support an adequate differential diagnosis and the design of an adequate future therapeutic plan. Identifying and preventing depression in the elderly can improve health and well-being in the elderly.

Depression is a prevalent and highly disabling disease. When it is suffered by an older person, it is associated with higher mortality, functional dependence, poor physical health, worse quality of life indicators and psychological well-being. In the elderly, the clinical diagnosis of depression is difficult, as it has a high comorbidity and is often confused with other health conditions prevalent during older adulthood.

The objective of this study was to evaluate the influence of Saccharomyces boulardii on the kinetics of fermentation for organic and conventional apple pulp and to verify the effect of the antioxidant quercetin on the response to cellular oxidative stress.

The kinetic parameters, the content of phenolic compounds, the quantity of quercetin and the antioxidant activity were determined during the fermentation process. The effect of quercetin on cellular oxidative stress was also investigated.

The content of phenolic compounds, the antioxidant activity and the quercetin concentration were higher in the organic fermented apple pulp (ORG) than in the conventional fermented apple pulp (CON). However, both apple pulps were considered ideal substrates for the growth of S. boulardii, suggesting that they are potentially probiotic. After fermentation, the quercetin concentration in the ORG treatment and YPDQ treatment (YPD broth with 0.1 mg quercetin rhamnoside/mL) increased viability by 9%, while in the CON treatment generated there was an increase of 6% in viability, compared to the YPD control treatment (YPD broth).

The high concentration of quercetin in the organic apple pulp supports the proposal that quercetin reduces the oxidative stress mediated by reactive oxygen species through its antioxidant action on S. boulardii that have similarities to mammalian eukaryotic cells. These findings suggest that fermented organic apple pulp could be consumed as a potential non-dairy probiotic product.