Publicações - engenharias
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David Choque Quispe;
Sandro Froehner
Palavra-chave:
aqüífero;
Mineração;
high Andean water-quality
Áreas do conhecimento:
Engenharias; Engenharia Sanitária; Saneamento Ambiental; Qualidade do Ar, das Águas e do Solo
resumo ...
The water from the high Andean rivers is peculiar due to its composition and the geomorphology of its sources, and naturally or anthropogenically contamination is not discarded along its course. This water is used for agriculture and human consumption, therefore knowing its quality is important. This research aimed to proposing and formulate a water-quality index for high Andean basins through the Delphi method, and its application in the Chumbao River located in Andahuaylas-Peru. Forty-three water-quality parameters were evaluated through the Delphi method, and the water-quality index (WQIHA) was formulated with a weighted average of the weights of the selected parameters, it was compared with the WQI Dinius. For this purpose, ten sampling points were considered along the Chumbao River located between 4274 and 2572 m of altitude and the WQIHA was applied. In addition, field and laboratory analyses were carried out in 2018, 2019, and 2021, in dry and rainy seasons. Twenty parameters were grouped in the physicochemical sub-index (SIPC), heavy metals sub-index (SIHM), and organic matter sub-index (SIOM). Each group contributed with weights of 0.30, 0.30, and 0.40, respectively, for the WQIHA formulation. The SIPC and SIOM showed that the areas near the head of the basin presented excellent and good quality, while the urbanized areas were qualified as marginal to poor; SIHM reported good quality in all points and seasons. Regarding the WQIHA, the index shows good quality in the zones above 3184 m of altitude, contrasting with poor quality downstream, decreasing notably in both seasons, suggesting continuous degradation of the water body.
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Carolina Castro Cittadin;
Ramon Macedo Corrêa;
Marcos Arndt;
Roberto Dalledone Machado
Palavra-chave:
Selective enrichment;
Friberg Indicator;
Modal matrix reduction;
Modal Analysis;
transient analysis;
G/XFEM
Áreas do conhecimento:
Engenharias; Engenharia Civil; Estruturas;
Engenharias; Engenharia Civil; Inovação;
Engenharias; Engenharia Civil; Estruturas; Métodos Numéricos em Engenharia
resumo ...
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FERNANDES, DIEGO;
DE GOES, RAFAEL ELEODORO;
André Luiz Tonso Fabiani;
BARRETO, RAFAEL CARVALHO;
KAMIKAWACHI, RICARDO CANUTE
Palavra-chave:
Fiber Bragg grating;
water velocity sensor;
water level sensor
Áreas do conhecimento:
Engenharias; Engenharia Hidráulica; Hidráulica;
Engenharias; Engenharia Elétrica; Medidas Elétricas, Magnéticas e Eletrônicas; Instrumentação; Instrumentação Eletrônica
resumo ...
This work proposes a fiber Bragg gratings (FBG) sensor for simultaneous measurements of water level, velocity, and temperature in open channels. The optical fibers are placed on a rectangular aluminum rod attached to the bottom of the channel. The water flow causes a distributed load and a characteristic bend in the rod, depending on the water level and velocity. A set of four FBGs are used to monitor the rod’s bending profile. Taking the wavelength difference of two FBGs makes it possible to eliminate the temperature effect and obtain a system of nonlinear equations dependent on velocity and water level. Velocities from 0.1 ms to 0.9 m/s and water levels from 0.4 m to 0.7 m were experimentally evaluated. A semi-empirical model was obtained to describe the wavelength shift, and finally the water level and velocity are calculated. The results show that the proposed system can determine the water level, mean velocity and temperature with satisfactory accuracy. Artificial neural networks are used as a second and more straightforward approach to determine the water level and velocity from the measured wavelengths, considering mean values and standard deviation. With this method, the maximum absolute deviations were 0.02 m/s and 3.1 cm, for the mean velocity and water level, respectively.
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Renata Pinho Morais;
Sabrina Hochheim;
C C de Oliveira;
RIEGEL-VIDOTTI, IZABEL C.;
Cláudia Eliana Bruno Marino
Palavra-chave:
nanopartículas;
silica;
interação pele
Áreas do conhecimento:
Engenharias; Engenharia Elétrica; Telecomunicações;
Engenharias; Engenharia Biomédica; Engenharia Médica; Biomateriais e Materiais Biocompatíveis
resumo ...
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Claudimir José Rebeyka;
Sérgio Tonini Button;
Ravilson Antonio Chemin Filho;
LAJARIN, SÉRGIO FERNANDO;
Pablo Deivid Valle;
MARCONDES, PAULO VICTOR PRESTES
Journal of Manufacturing Technology Research,
v. 14,
n. 1-2,
p. 1
2022
Palavra-chave:
FE modelling;
DP600
Áreas do conhecimento:
Engenharias; Metalurgia de Transformação; Conformação Mecânica
resumo ...
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LEITNER, DRIELLE SANCHEZ;
TAVARES, SERGIO FERNANDO;
Adriana de Paula Lacerda Santos
Palavra-chave:
healthcare facilities;
sustainability,;
COVID-19
resumo ...
(pt)
É crescente a busca pela sustentabilidade nas edificações. No caso de estabelecimento assistencial de saúde (EAS) esse esforço pode tornar-se ainda mais importante devido ao seu porte e complexidade. Apesar disso, no Brasil, não existem normativas especificas para a sustentabilidade na construção e operação de EAS. A fim de preencher essa lacuna a Agência Nacional de Vigilância Sanitária (ANVISA) dispõe em seu site publicações orientativas para a engenharia e arquitetura de EAS. Sabendo disso, o presente artigo visou identificar, dentro dos documentos ranqueados pela ANVISA, informações que pudessem ser relacionadas a busca pela sustentabilidade dos EAS, englobando suas esferas econômica, social e ambiental. Como resultado, os documentos apresentaram individualmente informações sobre pelo menos uma das esferas, sendo que quatro deles apresentaram informações sobre as três esferas. Adicionalmente, pretendeu-se localizar, considerando os mesmos documentos, fatores inerentes aos EAS que colaboram para o combate do COVID-19, pandemia mundial que chama mais atenção para os EAS e seu possível potencial no auxílio da resolução dessa situação. Como resultado, foram destacadas ações de higiene, limpeza, imunização, compartimentação da edificação e barreiras para transmissão. Por fim, foi discutida sobre a importância de ações que preencham os requisitos das três esferas da sustentabilidade simultaneamente e como isso pode resultar em uma edificação mais eficiente na resolução de situações imprevistas.
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POLEZER, GABRIELA;
Carlos Itsuo Yamamoto;
Ricardo Henrique Moreton Godoi;
Potgieter-Vermaak, Sanja;
OLIVEIRA, ANDREA;
MARTINS, LEILA D.;
SANTOS-SILVA, JÉSSICA C.;
MOREIRA, CAMILA A. B.;
PAULIQUEVIS, THEOTONIO;
GODOI, ANA F. L.;
TADANO, YARA
Palavra-chave:
particulate matter;
Air pollution
Áreas do conhecimento:
Engenharias; Engenharia Química; Ambiental
resumo ...
The global burden of disease estimated that approximately 7.1 million deaths worldwide were related to air pollution in 2016. However, only a limited number of small- and middle-sized cities have air quality monitoring networks. To date, air quality in terms of particulate matter is still mainly focused on mass concentration, with limited compositional monitoring even in mega cities, despite evidence indicating differential toxicity of particulate matter. As this evidence is far from conclusive, we conducted PM2.5 bioaccessibility studies of potentially harmful elements in a medium-sized city, Londrina, Brazil. The data was interpreted in terms of source apportionment, the health risk evaluation and the bioaccessibility of inorganic contents in an artificial lysosomal fluid. The daily average concentration of PM2.5 was below the WHO guideline, however, the chemical health assessment indicated a considerable health risk. The in vitro evaluation showed different potential mobility when compared to previous studies in large-sized cities, those with 1 million inhabitants or more (Curitiba and Manaus). The new WHO guideline for PM2.5 mass concentration puts additional pressure on cities where air pollution monitoring is limited and/or neglected, because decision making is mainly revenue-driven and not socioeconomic-driven. Given the further emerging evidence that PM chemical composition is as, or even more, important than mass concentration levels, the research reported in the paper could pave the way for the necessary inter- and intra-city collaborations that are needed to address this global health challenge.
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DARTORA, C.A;
ZANELLA, FERNANDO;
Cabrera, G. G.
Palavra-chave:
Diffraction theory;
Dirac's equation;
graphene
resumo ...
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Stéfano Frizzo Stefenon;
Matheus Henrique Dal Molin Ribeiro;
Ademir Nied;
Kin-Choong Yow;
Viviana Cocco Mariani;
LEANDRO DOS SANTOS COELHO;
Laio Oriel Seman
Palavra-chave:
sistemas elétricos de potência;
ensemble learning
Áreas do conhecimento:
Engenharias; Engenharia Elétrica; aprendizado de máquina;
Engenharias; Engenharia Elétrica; Sistemas Elétricos de Potência; Geração da Energia Elétrica
resumo ...
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Alexandre Bessa Martins Alves;
Aloisio Leoni Schmid;
Marcelo Risso Errera
Palavra-chave:
Teoria dos Constructais;
arquitetura urbana;
evolução
resumo ...
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