International Journal for Innovation Education and Research (IJIER)
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Thermal and energy balance of a fuel cell during hydrogen supply from metal hydride materials
No full textThe present article deals with the material and energy balance of a fuel cell during hydrogen supply from a metal hydride tank. It describes potential utilisation of heat from a fuel cell for heating a tank in order to achieve the required kinetics of the process. The concluding part hereof contains a numerical calculation of the thermal field of the designed tank during the fuel cell operation
Nernst equation applied to electrochemical systems and centenary of his Nobel Prize in chemistry
No full textWalther Hermann Nernst received the Nobel Prize in Chemistry in 1920 for the formulation of the third law of thermodynamics, thus celebrating a century in this 2020 year. His work helped the establishment of modern physical chemistry, since he researched into fields, such as thermodynamics and electrochemistry, in which the Nernst equation is included. This paper reports on several experiments that used a Daniell galvanic cell working in different electrolyte concentrations for comparing results with the theoretical values calculated by the Nernst equation. The concentration and activity coefficients values employed for zinc sulfate and copper electrolytes showed activity can replaces concentrations in thermodynamic functions, and the results are entirely consistent with experimental data. The experimental electromotive force from standard Daniell cell, for ZnSO4 and CuSO4, with unitary activity and in different concentrations at room temperature is in agreement with those from theoretical calculations. Cu2+ ion concentrations and temperature were simultaneously varied; however, the cell potential cannot be included in calculations of Nernst equation for different temperatures than 25 °C because the standard potential value was set at 25 °C. The cell potential decreases drastically when the Cu2+ concentration was reduced and the temperature was above 80 oC
Academic Process Oriented to the Reputational Capital of Brazilian HEI Brands
No full textThe reputation of a university must be positive, whether it is private or public, given the competitiveness of its environment. Reputation is an indicator of organizational success and can be monitored by the brand's reputational capital, which corresponds to the harmony between the characteristics established by the managers - brand identity, and the perception defined by its stakeholders - brand image. In a complementary way, business processes are useful tools for optimizing the roles and outcome of organizations. The objective of this work was to model an academic business process, to increase the efficacy of higher education training, guided by the reputational capital of the brands of universities in Brazil. A quasi-systematic review was carried out to investigate academic business processes - identity; bibliographic review to understand reputation and competitiveness – image; and was elaborated a diagram of the academic business process model with UML resources, SIPOC approach, relating identity and image through guidelines: elaboration and evaluation of student work individual plan, student self-efficacy stimulus, individual teaching advice, positive university culture, interaction with society and co-creation of brands by students from Brazilian HEIs - reputational capital
Design and development of an unmanned aerial vehicle for agricultural spraying in Brazil
No full textThis paper presents the development of the unmanned aerial vehicle (UAV) and its configurations as a platform for agricultural sprayers, with a hopper with a capacity of 100 kg, which can perform better maneuvers than conventional agricultural aviation, for precision spraying on small and medium Brazilian properties agricultural. The development and construction focused on precision spray agriculture, taking into account the reduction of costs and accident risks, modernizing, and complementing the activity. Prince Air Models Ltd. made the prototype with resources from FAPESP under Brazilian patent number PI 0404045-7 B1. It presented acceptable results for all flight situations requested with 100 kg of payload and flying in typical maneuvers and agricultural patterns
REGIONAL: Regional management information system and training for regional financial accountability
No full textFinancial accountability is the responsibility for financial management in the form of financial reports through the use of information technology, which is expected to be able to support regional governments in carrying out better regional financial management as well as having competent human resources in their management. This study aims to provide information about the usefulness of information technology and human resource competence in the accountability region financial report. This research was conducted in three regional expansion in Lampung Province with a descriptive qualitative method with the help of NVivo software for data analysts. The result showed that to achieve regional financial accountability is supported by utilizing information technology in the form of a regional management information system, while to be able to operate the SIMDA application program require adequate human resource and training is given to increase competence
Lessons Learned During Turbulent Times to Weather and Thrive in the Storm of COVID-19
No full textThis article describes the lessons learned by our university during the global healthcare crisis of COVID-19. It highlights the agile solutions employed to continue learning under extraordinary circumstances. While we have captured the stories that allowed our students to power through this tumultuous period if they so desired, these lessons may also provide guidance to other higher education institutions not only for the current turbulent times, but also enhance their ability to pause and pivot by utilizing agile management to weather this and future storms
Contextualisation Method for Measuring the Degree of Innovation in Micro and Small Enterprises
No full textThe methodologies proposed for measuring the degree of corporate innovation require a relevant selection of indicators. Nowadays, there is a growing number of indicators that can be used to describe innovation management and measure the degree of innovation. However, these indicators only provide a partial outlook of the degree of innovation, being often incomplete. Therefore, it is important to create compound indexes comprising different indicators, weighting factors and coefficients able to contextualise the conditions and characteristics of the elements analysed. This enables an assessment of the importance of contextualising indicators for measuring the degree of innovation based on the influence of different weighting factors and coefficients directly related to the context analysed. In this regard, the present work was aimed at contextualising the tool used for measuring the impact of innovation – INOVA-tec – and draw a comparison with the Innovation Radar for measuring the degree of innovation of a Micro and Small Enterprise (MSE). In addition, the present work developed a new methodological approach focused on contextualising the process for measuring the degree of innovation of business organisations based on the analysis of two MSEs. Both methodologies were applied for the measurement of the degree of innovation of 2 different retail companies from the textile and clothing sector. The results obtained concluded that the adapted version of INOVA-tec allows to contextualise the process of measuring the degree of innovation in MSEs by considering different perspectives and particularities taking into account the context of the companies analysed and the innovation actions implemented. Moreover, it enabled to assess the relevance of the indicators with regards to the value chain or type of service provided, considering different time frames and geographical scopes of the actions and their respective impacts. The adapted version of INOVA-tec also provides a greater range of analysis of the results, with a wider scope of categories which are directly proportional to the weighting criteria, weight ranges and correction factors adopted in the indicators considered. The Innovation Radar, which provided a contextualisation of the indicators analysed, showed an overlap of the degree of innovation between the different profiles of business innovation
Rheological Analysis of Asphalt Binders Modified with Hydrated Lime and Titanium Dioxide Nanoparticles
No full textThe significant increase in traffic on paved roads has accelerated the deterioration of asphalt coatings. Because of this, the use of additives to modify the properties of the asphalt binder has been studied in order to improve the performance in relation to, mainly, permanent deformations and fatigue life. This work evaluates the changes in the rheological properties of CAP 50/70 modified with fractionated particles of hydrated lime and titanium dioxide nanoparticles, obtained from the use of a ball mill. For this purpose, the CAP 50/70 was modified with the addition of fractionated lime particles in the contents of 3%, 5% and 7% by weight of the pure binder and with 3% of ground nano TiO2 (180 nm). The modified samples showed less loss of mass in the short term aging, proving to be an antioxidant alternative. In addition, it was found that the modified binders provided an increase in G* (stiffness parameter) and, consequently, in the maximum Performance Grade (PG) temperature, allowing the use of the studied binders at higher temperatures. The binder modified with a content of 5% hydrated lime presented better results in the tests of permanent deformation (MSCR and LAS). The decrease in TiO2 granulometry increased the integrity of the binder and made it more sensitive to deformations under temperature variations, however, milled titanium dioxide showed a positive result in increasing the resistance of the asphalt binder to fatigue when compared to the binder with nano TiO2 220 nm. Finally, it was possible to establish that the addition of fractionated particles of hydrated lime to CAP 50/70 is a viable and effective technique that meets the requirements of DNIT for use in paving and that the incorporation of ground nano TiO2 (180 nm) attributed to the asphalt binder 50/70 higher working temperature in the field
Manufacture of a non-woven using bamboo cellulose base (angustifolia) as a filter medium for the manufacture of masks
No full textThe purpose of this study was to produce a non-woven, using a base of bamboo cellulose (angustifolia) with a particle size of 1mm, and it begins with the weighing of 100 g bamboo cellulose, which is mixed with a bath ratio bamboo / water 1:10 in a mixer grinder, placing 1 liter of water mixes and forms a viscous solution, this solution is placed on a frame stretched with polyester woven mesh and another frame without mesh, once the layer is formed, it is remove the upper frame without mesh and compress it manually with a sponge, removing excess water and drying in the room at a temperature of 20 0C for 8 hours, evaporated the moisture from the bamboo cellulose (angustifolia) and dried, separated from the frame and a laminated nonwoven (filter) was obtained. Finding that the breaking strength and its elongation in thickness of 0.3mm is 2.73 N and 0.895 mm respectively and thickness of 5mm is 31.2 N and 1.01 mm. The resistance and extension is very low in the two cases, and there are no statistically significant differences between their sample medians (p> 0.05). It can be concluded that when using bamboo cellulose base with a particle size of 1mm, and forming the non-woven with thickness of 0.5mm and 3mm, it has low resistance and extension, finding that if the raw material has an influence on the conformation of the non-woven
Biomedical Mechatronic Dynamometer to Support the Evaluation of the Effects of Leprosy Through the Palmar Holding Strenght and the Tweezer Holding Strenght
No full textThe hand can suffer the effects of several diseases among the most serious, leprosy stands out, which is considered infectious and can generate loss of muscle strength, atrophy, deformity and physical, mental and social disability. For the World Health Organization (WHO) and also doctors and physiotherapists, it is necessary to evaluate the diseases in an objective, reliable and early manner in order to propose appropriate treatment and follow their evolution. This research proposed a biomedical mechatronic dynamometer in order to support the evaluation of the effects of leprosy by means of palmar grip strength and grip strength of tweezers performed by hand. The experimental research was developed at the Federal University of Mato Grosso do Sul and consisted first of all in the survey of the demands of the health area in relation to the biomedical dynamometer being consulted the following databases: Medical Literature Analysis and Retrieval System Online (Medline); US National Library of Medicine National Institutes of Health (PUBMED) e Institute of Electrical and Electronic Engineers (IEEE). The mechatronic biomedical dynamometer consisted of three fundamental parts: mechanical structure, electronic signal conditioning circuitry and digital information processing. The mechanical structure was designed to withstand a strenght of up to 700 N, developed in brass because this metal has low cost, has less mass and also because it is easier to machine than steel. The oval shape of the structure contains two lateral and thin regions that measure 2 cm thick, 3 cm wide each and aim to concentrate mechanical stresses in order to sensitize the strain sensor consisting of the four linear strain gages, model N2A-XX-S5262P-350/E4 and nominal resistance of 350 Ω, from the company Micro-Measurements, which showed accuracy of 98%. The mechanical structure also has a stainless-steel support that measures 1 cm thick and 3 cm wide located at the bottom and on which was glued a cushion to support the palm of the hand. This support can be replaced by other models that also contain a cushion that considers the presence of injuries or deformities in the hand. The mechanical structure also has a upper support that also measures 1 cm thick and 3 cm wide, to which four pressure sensors developed with rosette strain gages model N2K-XX-S5294R-350/DP/E4 with a nominal resistance of 350 Ω, from the company Micro-Measurements, were fixed and which showed an accuracy of 99.5%. The deformation sensor is stimulated by the application of palmar grip strenght while the pressure sensors are stimulated by the realization of index, middle, annular and minimum finger gripping strenght. In addition, these sensors are connected to Wheatstone Bridges whose feeds and also the responses are processed by five signal conditioning circuits developed with operational amplifiers LF 356, OPA 27 and OP27 GP of the company Burr-Brown, whose structure consists of voltage oscillator, amplifier, band pass filter, buffer and peak detector that generates DC voltage that feeds the data acquisition board. The answers on this board are sent to the Inspiron 15 3000 microcomputer from Dell, which has installed Labview software from National Instruments, which processes the information, stores, plotts the palmar grip strenght and pinch grip strenght graphs and can also send the information over the Internet. This research has the potential to obtain accurate information on the effects of leprosy in the hand that can support the evaluation, diagnosis of health professionals, follow up the evolution of the disease and the treatment adopted