Browsing by Issue Date, starting with "2023-07-26"
Now showing 1 - 3 of 3
Results Per Page
Sort Options
- Edible films produced from agrifood by-products and wastesPublication . Jorge, Alexandre M.S.; Gaspar, Marisa C.; Henriques, Marta H.F.; Braga, Mara E.M.This study aims to develop edible films using agrifood by-products (pumpkin seeds, broken rice and orange pectin) and wastes (quince peel, potato peel, potato pulp, orange peel, pumpkin peel). The physicochemical characteristics of the films were investigated, including their mechanical and barrier properties. Higher amounts of plasticizer induced poorer mechanical and barrier properties in the films. The most promising ones were obtained with orange pectin, broken rice and pumpkin peel, with water contact angles (WCA) between 48° and 57°, maximum water vapor transmission rate and water vapor permeability of 575 g.m−2.d−1 and 108 × 10−12 g.Pa−1.s−1.m−1, respectively, Young's modulus between 350 and 800 MPa, maximum tensile strength between 9.0 and 26.25 MPa, and elongation at break between 2.28 and 9.3%. Orange pectin and broken rice are promising raw materials since they led to higher WCA, better barrier and mechanical properties. Broken rice and quince peel can be good substitutes for commercial starch and glycerol, respectively. Agro-industrial by-products and wastes revealed potential for the production of sustainable edible films.
- Web-based Sports Scoring System for Trampoline Gymnastics CompetitionsPublication . Patrício, João Pedro Pereira; Assunção, Pedro António Amado de; Silva, Catarina Helena Branco Simões da; Marcelino, Luís Filipe Fernandes SilvaThis work arises within the context of the Master’s Project in Computer Engineering - Mobile Computing course, at Escola Superior de Tecnologia e Gest˜ao do Instituto Polit´ecnico de Leiria. The aim of this work is to describe the work carried out over several months, in partnership with the Trampolins Clube de Leiria. This is a local club, and as such, with somewhat limited resources, such as the competitions they manage and organize their judging solution were in need of improvements in terms of organization, speed, data acquisition, trust in the data, and resilience. This work begins by presenting the methodology used, followed by a contextualization of the sport, and a brief presentation of some software available in the market. Next, a comparison between the various current technological solutions is presented, as a means of gathering the necessary information to make informed decisions for the presentation of a solution. There is also a chapter with the details of the proposed solution, a description of the technologies used, and the implementation details. Finally, various execution scenarios, tests, and questionnaires are analyzed, concluding with the project’s findings. The main goal of the project was to propose an architecture for a solution to be made available in trampoline competitions, in order to minimize manual processes and perform calculations automatically, thus reducing human error and accelerating the entire end-toend process. There was also the objective of, during the development of the proposed solution, having it tested in actual events, including regional, national, and international competitions. The project was successfully completed, with the club’s main goals achieved. The experience gained in the interactions of requirement gathering was enriching for everyone. In the real-life context, the application’s performance and output were accepted in all possible categories.
- The relationships between passions, intentions, habit and exercise frequencyPublication . Rodrigues, Filipe; Teixeira, DiogoThere were three purposes to this research. First, we sought to test the differential role of harmonious andobsessive passion in predicting intention and habit for exercise. The second goal of this research was totest the associations between intention, habit and exercise frequency. Last, the third goal was to assessthe mediation role of intention and habit in the relationship between both forms of passion and exercisefrequency. The sample consisted of 284 participants (140 males, 144 females) aged 18–60 years old(M age = 29.81, SD = 9.16). Regression paths of the structural model indicated significant associations: a)harmonious passion was significantly associated with intentions and habit; b) obsessive passion wassignificantly associated with habit; c) intentions and habit were significantly associated with exercisefrequency. The mediation model variance explained was 17% (p < .001). The total effect via harmoniousand obsessive passion was β = .57 (IC95% = .42, .73) and the total indirect effect was β = .11 (IC95% = .02,.24). Having harmonious passion for a fitness activity appears to have the potential to increase regularphysical activity among exercisers. Individuals who recognize the significance of physical exercise andparticipate in activities they enjoy the most can affirm the positive effects on their health from beingactive.