4,611 research outputs found
Grass pea miso: Development of miso based on a portuguese legume - microbiota and preservation capacity
Fermented foods are extremely popular nowadays mainly thanks to their health benefits and diversity. One example of a fermented food is miso, a fermented soybean paste very famous in Japan, also considered a functional food and used to make soups or as a seasoning for several dishes.
In Japan, miso is made by traditional backslope methods. With the arrival of miso to West-ern countries, more standard, controlled, sustainable and safe processes are needed, starting by switching the soybean by Portuguese legumes (e.g. grass pea) and by developing starters. The aim of this project is to develop an innovative, tastier and safe grass pea miso, using a yeast starter culture and soybean miso as control.
The characteristics and evolution of miso were evaluated, based on color and microbiota studies. Results obtained point to an important role of Aspergillus oryzae at the beginning of fer-mentation, and to the maintenance of the viability of yeasts (Candida versatilis) used as a starter along the whole process of miso’s maturation. Also, the obtained product presented good senso-rial characteristics being largely accepted by consumers.
The self-preservation capacity of grass pea miso was also evaluated in order to ensure that the product is safe when stored at the consumer’s house and shop shelves. Using challenge tests at several temperatures (4ºC, 25ºC and 37ºC), it was observed a substantial reduction in the pathogenic microorganisms’ population, in most cases leading to its complete elimination. At the temperatures of 37ºC and 25ºC, all the microorganisms were eliminated (except for Bacillus cereus) after 2 days while at 4ºC it takes more than 30 days for them to be eliminated
Improved PWM A/D conversion technique: working principle and model validation
Analog-to-digital conversion plays a central role in any application of digital sensors and
sensor systems that require an interface between analog devices, namely analog sensors,
and digital devices, namely, microprocessors, digital signal processors or microcontrollers.
With the advent of smart sensing, the integration of signal conditioning, analog-to-digital
and digital data processing in single hardware devices became a reality. Moreover, the
usage of low-cost discrete A/D conversion techniques for applications that are not critic in
terms of accuracy, resolution or conversion rate, are considering increasingly mixed
hardware and software A/D solutions tailored for specific application demands. In this
context, this chapter presents a discrete low-cost A/D conversion solution based on pulse
width modulation particularly suited for microcontrollers' integration with smart sensing
devices.info:eu-repo/semantics/publishedVersio
Foundation fieldbus : from theory to practice
This paper describes the main characteristics of the Foundation Fieldbus (FF) technology considering both communication levels, namely H1 and H2, which have bit rates of 31.25 K and 100 Mbit/s, respectively. Several details about the physical layer, communication stack and user layer will be highlighted. Topics related with the configuration of instruments, as well as the design and implementation of supervision software, based on a LabVIEW interface, will be presented. A pilot plant that includes temperature, pressure, level and flow variables will be used to test and validate the capabilities of FF systems. Experimental results will be analyzed, their meaning discussed and the overall performance evaluated
IoT, UAV, BCI empowered deep learning models in precision agriculture
info:eu-repo/semantics/publishedVersio
THE INFLUENCE OF SWIMMING VELOCITY ON THE KINEMATIC CHARACTERISTICS OF BACKSTROKE SWIMMING
Under standard workout conditions, swimmers spend most of their time swimming at rates significantly lower than racing speed. Specificity of training is not just a metabolic problem, but also a technical and a kinesiological one. The purpose of this study was to determine to what extent swimming the backstroke at different speeds implies a change in the stroke pattern and in the kinematics of the propulsive movements. We also studied the technical characteristics associated with performance in short distance efforts. A third aim of this study was to compare the intra-cycle velocity variation of the center of gravity of the body to the intra-cycle velocity variation of the hip point.
Seven well-trained male swimmers participated in this study (age: 14.71±0.76 years, height: 1.74±0.39 m, body mass: 63.14±5.52 kg, %FAT: 15.40±1.81). Each subject performed 3 x 50 m backstroke repeats with 15 min of rest at a velocity corresponding to 90% (v90), 95% (v95) and 100% (vmax) of best performance in the 50 m backstroke. The swimmers were filmed on the sagittal plane, underwater and above the water, with synchronized cameras (60 Hz). Images were mixed and then digitized for further analysis using the APAS system.
Peak mean horizontal velocities of the hand occurred during the upsweep at v90 and v95 and during the finish/exit at vmax. Total stroke duration decreased from v90 to v100 due to the shorter duration of the downsweep, the final downsweep and the finish/exit, but the relative duration of the phases did not show any significant changes. Increasing velocity caused an increase in the distance between point of entry into the water and point of exit of the hand from the water, but mean horizontal pulling length decreased. Swimming velocity at sub-maximal paces correlated well to mean body velocity at the upsweep, but at vmax, the highest association was to body velocity at the final downsweep. Maximal velocity in the 50 m backstroke was inversely correlated to the range of intra-cycle velocity variations of the body center of gravity. This parameter showed a poor individual correlation to the hip velocity variation (r=0.58 ± 0.18). The correlation between the coefficient of variation of the hip and the center of gravity intra-cycle velocities had, on the contrary, a high significance.
Movement of temporal and spatial structures seem to vary little with velocity changes in swimmers who have attained a good stabilization of motor execution. In fast swimming, nevertheless, swimmers apparently achieve a greater anterioposterior stabilization of the hand, which may indicate more pronounced lift oriented sculling actions, and performance becomes more dependent on the final portion of the underwater path. The variation of the mean velocity of the hip cannot be used for quantification of the changes of body velocity from phase to phase, but a coefficient of variation (SD . mean-1 . 100) of intra-cycle hip velocity seems to be an adequate indicator of the intra-cycle velocity variation of the body center of gravity
Balanced Scorecard: A Powerful Method to Improve the Management of Educational Institutions
Trabalho apresentado em 2nd International Academic Conference on Teaching, Learning and Education (TLE 2020), Novembro 2020; Munique, AlemanhaTeaching, learning and education are the main activities related with any higher education
institution (HEI), be they public or private. In this context, the balanced scorecard (BSC) is a
powerful method that helps the successful application of performance measurements in terms
of the efficiency of the programs, processes and people of any educational institution. The key
performance indicators (KPI) are crucial indicators to translate the strategy into action,
improving the synergies of all the people that contribute to management success. This paper
underlines the importance of the BSC model in private, governmental and non-profit
organizations highlighting its implementation in a HEI. In order to clarify the main concepts of
the application of the BSC method in a HEI, a hypothetical institution (IPX) is considered and a
set of strategic objectives are considered in terms of financial, clients, business, learning and
growth perspectives. The key parameter indicators and the action plan are defined according
to the HEI vision.info:eu-repo/semantics/publishedVersio
BeSmart2: A multicriteria decision aid application
This paper presents an improved version of an application whose goal is to provide a simple and intuitive way to use multicriteria decision methods in day-to-day decision problems. The application allows comparisons between several alternatives with several criteria, always keeping a permanent backup of both model and results, and provides a framework to incorporate new methods in the future. Developed in C#, the application implements the AHP, SMART and Value Functions methods
Defect detection on painted surfaces
Com o aumento exponencial da competitividade na indústria atual, a contínua
procura pela automação e digitalização é um processo indispensável
para o aumento da qualidade. Nos dias que correm, e na grande maioria dos
casos, a inspeção de qualidade de superfícies pintadas é feita com recurso
à visão humana. Dado que as características dos defeitos em superfícies
pintadas são muito diversas e aleatórias, a visão humana consegue ainda
ser superior na relação qualidade/preço na maioria dos processos da indústria
atual. Contudo esta inspeção visual passa normalmente, sobretudo em
grandes objetos, pela necessidade do operador se colocar em posições pouco
ergonómicas e desconfortáveis por grandes quantidades de tempo. Por outro
lado, a inspeção de defeitos automática traduz-se na eliminação da variação
nos critérios de inspeção que está inerente à natureza humana. A Bosch
Termotecnologia produz esquentadores e caldeiras cujas frentes são pintadas
e, para melhorar a precisão e rigor na inspeção de qualidade das mesmas,
pretende-se desenvolver um sistema automático de deteção dos defeitos de
forma a aumentar o rigor e a consistência da inspeção, eliminando assim o
erro humano do sistema e diminuindo os tempos de análise. Deste modo,
neste projeto foi usada a técnica de deflectometria, que consiste em projetar
padrões sinusoidais nas superfícies e capturar o seu reflexo para posteriormente
ser analisado. Desta forma foi possível criar um dataset de imagens
relativo a cada defeito. Assim, o sistema usou uma camara de visão industrial
que fazia a captura continua das imagens para serem analisadas com
base num modelo criado com recurso a Deep Learning. O resultado da sua
classificação é enviado para o Nexeed MES e além disso é possível a visualização
em tempo real das classificações através de uma GUI. O modelo final
apresentou precisões acima dos 95% nos subsets de teste e demora menos
de um segundo a realizar a classificação e enviar a informação para o MES.With the exponential increase in competitiveness in today’s industry, the
continuous search for automation and digitalization is an indispensable process
for increasing quality. Nowadays, in the vast majority of cases, quality
inspection of painted surfaces is done using human vision. Given that the
characteristics of defects on painted surfaces are very diverse and random,
human vision can still be superior in the quality/price ratio in most processes
in industry today. However this visual inspection usually involves, especially
with large objects, the need for the operator to stand in unergonomic and
uncomfortable positions for large amounts of time. On the other hand, automatic
defect inspection means eliminating the variation in inspection criteria
that is inherent to human nature. Bosch Termotecnologia produces water
heaters and boilers whose fronts are painted and, to improve the accuracy
and rigor in the quality inspection of them, it is intended to develop an automatic
system for defect detection in order to increase the accuracy and
consistency of inspection, thus eliminating human error from the system and
reducing analysis times. Therefore, in this project the deflectometry technique
was used, which consists in projecting sinusoidal patterns on surfaces
and capturing their reflection to be later analyzed. This way it was possible
to create a dataset of images relative to each defect. Thus, the system
used an industrial vision camera that continuously captured the images to
be analyzed based on a model created using Deep Learning. The result of
its classification is sent to Nexeed MES and in addition it is possible to visualize
in real time the classifications through a GUI. The final model showed
accuracies above 95% on the test subsets and takes less than a second to
perform the classification and send the information to the MES.Mestrado em Engenharia Mecânic
Criação da página web dos serviços de obstetrícia do Hospital Doutor José Maria Grande, Portalegre
A gravidez por si só é caracterizada por um conjunto de alterações a vários
níveis, por isso torna-se de extrema importância criar meios que tragam respostas às
dúvidas e receios da grávida/ casal. Com a internet surge uma nova forma de transmitir
informação em várias áreas, inclusive na saúde.
O presente trabalho descreve a criação da página web do serviço de obstetrícia
do Hospital Doutor José Maria Grande integrado na Unidade Local de Saúde do Norte
Alentejano, EPE, como forma de transmissão de informação fidedigna, ao conjunto de
grávidas e casais em idade fértil existentes no distrito de Portalegre, tentando desta
forma aumentar a literacia em saúde desta população.
Consegue-se compreender através dos dados recolhidos, que tanto Enfermeiros
do serviço de Obstetrícia como utentes que frequentaram a página web durante o mês
seguinte à sua criação, valorizam a existência da mesma enquanto forma de transmissão
de conhecimento; ### ABSTRACT
Title: Web page creation of obstetric service of the Hospital Doutor José Maria
Grande, Portalegre
Pregnancy itself is characterized by a set of changes at various levels, so it is
extremely important to create means to bring answers to the doubts and fears of
pregnant woman / couple. With the internet comes a new way to convey information in
several areas, including health.
This work describes the web page creation of obstetric service of the Hospital
Doutor José Maria Grande integrated in Unidade Local de Saúde do Norte Alentejano,
EPE, as a means of transmission of reliable information to all the pregnant women and
couples of childbearing age that are in the district of Portalegre, and thus increasing the
health literacy of this population.
Through the collected data, it is a fact that both Nurses and Obstetric service
users who used the website during the month following its creation value it as a
trustworthy knowledge resource
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