439 research outputs found
Desenvolvimento de um dispositivo para monitoramento de painéis fotovoltaicos
No full textThe continuous search for the development of a sustainable energy matrix represents today one
of the biggest challenges facing humanity and, among the many actions that can be taken, the
use of alternative renewable energy sources is undoubtedly one of the most important. Among
the alternative sources of renewable energy, photovoltaic solar energy is receiving the most
attention within the current scientific community, as it is a clean, renewable and low
maintenance source. However, although it has several benefits, being a relatively new
technology compared to traditional sources, it needs some care, as well as frequent monitoring
of its operation. In this context, the work aims to design and develop a device, through free
hardware, for monitoring and data acquisition of a photovoltaic solar panel. It is also intended
to monitor the incidence of solar irradiance on this panel, in order to analyze both the generation
and its efficiency, using fuzzy logic concepts. For this, a wemos atmega2560 wifi
microcontroller board will be used, which will be responsible for the entire data processing,
acquisition and transmission base. In addition, sensors will be used for voltage and current (INA
219), temperature / humidity (BME 280) and infrared (MLX 90614) reading for panel surface
temperature. The data will be stored on both the Blynk platform server and a data card
(datalogger). Finally, tests were performed in order to validate the quality and reliability of the
device in various scenarios, thus concluding that the device presented good stability and
reliability in data acquisition and transmissionA busca incessante pelo desenvolvimento de uma matriz energética sustentável representa hoje
um dos maiores desafios a serem enfrentados pela humanidade e, dentre as diversas ações que
podem ser realizadas, o uso de fontes alternativas de energia renováveis é sem dúvida uma das
mais importantes. Dentre as fontes alternativas de energia renováveis a energia solar
fotovoltaica é a que vem recebendo mais atenção dentro da comunidade cientifica atual, por ser
uma fonte limpa, renovável e com baixo índice de manutenção. No entanto, apesar de apresentar
diversos benefícios, por ser uma tecnologia relativamente nova quando comparada com fontes
tradicionais, necessita de certos cuidados, bem como de um monitoramento frequente de seu
funcionamento. Nesse contexto, o trabalho tem como proposta, projetar e desenvolver um
dispositivo, através de hardware livre, para o monitoramento e aquisição de dados de um painel
solar fotovoltaico. Pretende-se ainda monitorar a incidência de irradiância solar sobre esse
painel, a fim de analisar tanto a geração quanto a sua eficiência, utilizando conceitos de lógica
fuzzy. Para isso, será utilizada uma placa microcontroladora wemos atmega2560 wifi, que será
responsável por toda base de processamento, aquisição e transmissão de dados. Além disso,
serão utilizados sensores para leitura de tensões e correntes (INA 219), temperatura/umidade
(BME 280) e infravermelho (MLX 90614) para temperatura na superfície do painel. Os dados
serão armazenados tanto no servidor da plataforma Blynk quanto em um cartão de memória
(datalogger). Por fim, foram realizados testes com o intuito de validar a qualidade e
confiabilidade do dispositivo em diversos cenários, permitindo, assim, concluir que o
dispositivo apresentou uma boa estabilidade e confiabilidade na aquisição e transmissão dos
dadosCoordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPE
Expediente
No full textExpediente
Prof. Dr. Adauto Lúcio Caetano Villela
Profa. Dra. Carol Martins da Rocha
Rónai – Revista de Estudos Clássicos e Tradutórios
Volume 7, Número 2
Editores:
Prof. Dr. Adauto Lúcio Caetano Villela
Profa. Dra. Carol Martins da Rocha
Avaliadores:
Prof. Dr. Adauto Lúcio Caetano Villela (UFJF)
Profa. Dra. Ana Thereza Basílio Vieira (UFRJ)
Prof. Dr. Beethoven Alvarez (UFF)
Prof. Dr. Daniel Teixeira da Costa Araújo (UNB)
Prof. Dr. Frederico Spada Silva (PUC-Rio)
Prof. Dr. Leandro César Albuquerque de Freitas (UFU)
Profa. Dra. Leni Ribeiro Leite (UFES)
Prof. Dr. Luís Carlos Lima Carpinetti (UFJF)
Profa. Dra. Maria Cristina da Silva Martins (UFRGS)
Prof. Dr. Márcio Thamos (Unesp/Araraquara)
Prof. Dr. Matheus Trevizam (UFMG)
Prof. Dr. Paulo Sergio de Vasconcellos (Unicamp)
Prof. Dr. Pedro Bustamante Teixeira (UFJF)
Prof. Dr. Raimundo Nonato Barbosa de Carvalho (UFES)
Prof. Dr. Rodrigo Pinto de Brito (UFRRJ)
Prof. Dr. Rodrigo Tadeu Gonçalves (UFPR)
Profa. Dra. Tatiana Oliveira Ribeiro (UFRJ)
Profa. Dra. Thaíse Pereira Bastos Silva Pio (UFF)
Assistente editorial:
Isabella Barreto Vera
Rice Crop Rotation: a solution for weed management.
No full textThe challenges for weed management have increased in rice cultivation due to the high number of cases of herbicide-resistant weeds, especially the widespread distribution of imidazolinone-resistant weedy rice. Therefore, there has been particular interest in preventive, physical, and cultural methods in recent decades. In this context, the adoption of the rice-soybean rotation is reported to be one of the most important factors for weed management in rice fields. Additionally, the use of a diversified crop rotation enables the implementation of a broader herbicide program, which is an important feature influencing weed population dynamics. Rice-soybean rotation has been adopted by farmers to control problematic weed species, reduce seed bank of troublesome weed species, and prevent rice grain yield and quality losses caused by its interference. This crop rotation scheme has brought several benefits when it comes to weed management; however, there are also some drawbacks when adopting this strategy such as the limited productivity of soybean and new weed species becoming problematic, such as Conyza species. Thus, this chapter explores the advantages and disadvantages of adopting crop rotation in Brazilian lowlands, and proposes a set of strategies to successfully implement crop rotation in lowland soils as a tool for weed management
Selectivity of pesticides used in rice crop on Telenomus podisi and Trichogramma pretiosum.
No full textTelenomus and Trichogramma species stand out as agents for the biological control in rice crops, and the main strategy for preserving them is the use of selective pesticides. This study aimed at evaluating the toxicity of pesticides used in irrigated rice crop on Telenomus podisi Ashmead (Hymenoptera: Platygastridae) and Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae). Adults of these parasitoids were exposed to dry residues of pesticides, in a completely randomized experiment, with 25 treatments (24 pesticides + control) and four replications. The insecticides clorantraniliprole, flubendiamide and diflubenzuron and the biological insecticides based on Beauveria bassiana and Metarhizium anisopliae were harmless to T. podisi and T. pretiosum. The harmless herbicides were: 2.4-D amine, profoxydim, quinclorac, ethoxysulfuron and saflufenacil. The fungicide epoxiconazole + kresoxim-methyl was also harmless to these two biological control agents. Therefore, these pesticides are indicated for the integrated pest management, in flooded rice areas
Plano Popular da Vila Autódromo. Plano de Desenvolvimento Urbano, Econômico, Social e Cultural
No full textAMPVA, Assoc. Moradores e Pescadores da Vila Autódromo BIENENSTEIN, Regina; VAINER, Carlos; RAMOS, Aguinaldo; VAINER, Alice NESI, Amanda; SEQUEIRA JUNIOR, Antonio; CAMARA, Breno; GUTERMAN, Bruna; SARAIVA, Camila; LOBINO, Camilla; HIRT, Carla; DIMAS, Cinthia; SOUZA, Daniel Mendes Mesquita de; FREIRE, Eloisa; CHANG, Esther; OLIVEIRA, Fabrício Leal de; NIN, Felipe; SIMOES, Felipe; FIDELES, Felippe; PODZWATO, Fernanda; SANCHEZ, Fernanda; SANTOS, Fernanda Souza dos; ALEXANDRE, Francisca; MARTINS, Mayã; TANAKA, Giselle; BIENENSTEIN, Glauco; GROSSI, Grasiele; XAVIER, Guilherme; CARVALHO, Heloisa Gama de; MATELA, Igor; MELLO, Irene; ROCHA, Isabella; ZANATA, Ivan; SAMPAIO, Jackeline; CANTARINO, Julia; PEREIRA, Juliana; PERES, Juliana; BRANDENBURGER, K.; FONTAINHA, Leonardo; ROMAIN, Lilian; PEIXOTO, Luana; SOUZA, Luana; FAULHABER, Lucas; KLEYNJANS, Manon; MEDEIROS, Mariana; ARCE, Marta VARGAS, Matheus; BENTO, Mattheus; COSTA, Micaela; FURTADO, Mirella; FERRARI, Murilo; OLIVEIRA, Natália; VASCONCELLOS, Natalia; GUSMAO, Nelma; MOREIRA, Paula Cardoso; LAIBER, Paula; NOVAIS, Pedro; MONTEIRO, Poliana; CREVELANDE, Raama Bárbara; VALADAO, Regina; COSENTINO, Renato; SANTOS, Roberta; SANTOS, Rosane; AMORIM, Thiago Costa; CARVALHO, Thiara Souza; BASTOS, Tiago. Plano Popular da Vila Autódromo. Plano de desenvolvimento urbano, econômico, social e cultural, 2016
Supplementary_material_-_Surgery_edited_190319_FINAL – Supplemental material for Renal cell cancer treatment: an expert panel recommendation from the Latin American cooperative group-genitourinary and the Latin American renal cancer group: focus on surgery
No full textSupplemental material, Supplementary_material_-_Surgery_edited_190319_FINAL for Renal cell cancer treatment: an expert panel recommendation from the Latin American cooperative group-genitourinary and the Latin American renal cancer group: focus on surgery by Stênio de Cássio Zequi, Walter Henriques da Costa, Fernando Korkes, Rodolfo Borges dos Reis, Wilson Francisco Schreiner Busato, Wagner Eduardo Matheus, Deusdedit Cortez Vieira da Silva Neto, Felipe de Almeida e Paula, Gustavo Franco Carvalhal, Lucas Nogueira, Roni de Carvalho Fernandes, Adriano Gonçalves e Silva, André Deeke Sasse, André P. Fay, Denis Leonardo Jardim, Diogo Assed Bastos, Diogo Augusto Rodrigues da Rosa, Evanius Wierman, Fabio Kater, Fabio A. Schutz, Fernando Cotait Maluf, Fernando Nunes Galvão de Oliveira, Igor Alexandre Protzner Morbeck, José Augusto Rinck, Karine Martins da Trindade, Manuel Caitano Maia, Vinicius Carrera Souza, Fernando Sabino Marques Monteiro and Andrey Soares in Therapeutic Advances in Urology</p
Weed Management in Sprinkler-Irrigated Rice: experiences from southern Brazil.
No full textSprinkler rice saves water compared to paddy rice. However, in paddy fields, the water table is efficient for weed suppression. In sprinkler rice, there is no water table on soil; thus, weed management used in paddy rice may not be suitable for sprinkler rice, since herbicides and water table are expected to interact. Weed pressure in sprinkler rice is higher than in paddy rice; annual grasses are the main weeds in both paddy and sprinkler rice. Barnyardgrass, goosegrass, crabgrass and Alexandergrass show vigorous growth in sprinkler rice. A 3-year study shows that weeds in sprinkler rice reduce grain yield between 11 and 95%. Herbicides used in conventional and Clearfield® rice (clomazone, imazethapyr + imazapic, imazapyr + imazapic, pendimethalin and penoxsulam) were tested, contrasting paddy and sprinkler rice. Additionally, the technique locally called “needle-point” (glyphosate applied over the first-day emerging rice) was combined with pre- and postemergence herbicides. When using only pre- or postemergence, weeds reduced rice grain yield; a combination of products was the best option for sprinkler-irri- gated rice. The Clearfield technology was efficient in controlling most weeds. However, using it combined to the needle-point promoted the best results. The main approaches for weed management in sprinkler-irrigated rice were summarize
Efeito da densidade de semeadura do arroz irrigado nos componentes de rendimento e na germinação de sementes.
No full textHabilidade competitiva de arroz irrigado com plantas daninhas: i - pré-seleção de genótipos.
No full text- …
