P V Curves
Mostrando 1-12 de 192 artigos, teses e dissertações.
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1. A 2.4 GHz Coplanar Solar Cell Patch Antenna with a Semi-Analytical Evaluation of Temperature Effects
Abstract Solar cells integrated with antennas have aroused scientific interest as an attractive energy source alternative in low power devices for IoT and Wireless Sensor Network applications. Since the space for all components in the systems is scarce, different integration ideas have been proposed in this field. However, further analysis of the performance
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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2. Is there a relationship between preoperative cytological diagnosis and evolution in patients with differentiated thyroid carcinoma? A retrospective study
ABSTRACT Objective: Cytological analysis and Bethesda classification of thyroid nodules is the standard method of diagnosing differentiated thyroid carcinoma (DTC). However, even for nodules with a non-malignant cytological diagnosis, there is a not insignificant risk of cancer. There are doubts whether this lack of certainty would influence patient prognos
Archives of Endocrinology and Metabolism. Publicado em: 2022
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3. Volatile Metabolomics from Cashew Leaves: Assessment of Resistance Biomarkers Associated with Black Mold (Pilgeriella anacardii Arx & Müller)
Black mold, a disease caused by the fungus Pilgeriella anacardii Arx & Müller, affects cashews (Anacardium occidentale). Some cashew clones are more resistant to the pathogen; however, little is known about the chemical profile responsible for this trait. The investigation of volatile organic compounds (VOCs) from leaves of dwarf cashew clones resistant (BR
Journal of the Brazilian Chemical Society. Publicado em: 2022
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4. FUZZY MODELING OF SALINITY EFFECTS ON PUMPKIN (Cucurbita pepo) DEVELOPMENT
ABSTRACT The low quality of the water currently used for irrigation purposes harms the quality of the products and can lead to a reduction in production. Thus, the objective of this work was to verify the effect of saline water in irrigation water, on biometric variables of pumpkin crop using a system based on fuzzy rules. The agronomic experimental part of
Engenharia Agrícola. Publicado em: 2022
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5. Ferrimagnetic to paramagnetic transition and dielectric relaxation in Ni1-xZnxFe2O4 ferrites
Abstract The spinel ferrite system Ni1-xZnxFe2O4 (x=0-0.7, Δx=0.1) was prepared by wet chemical co-precipitation method using sulfates of respective metal ions. The electrical resistivity and dielectric properties of the prepared samples have been studied as a function of temperature, frequency, and Zn content (x). The DC resistivity (ϱ) was measured in th
Cerâmica. Publicado em: 2021-06
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6. Two Years Monitoring of Ethyl Carbamate in Sugar Cane Spirit from Brazilian Distilleries
This paper describes the monitoring of ethyl carbamate concentration in sugar cane spirit from industrial distilleries in Brazil. In total, 18 distilleries from Minas Gerais and São Paulo states were evaluated, with, a total of 336 samples from August 2017 to August 2019. The ethyl carbamate was analyzed using a previously validated mass spectrometric metho
J. Braz. Chem. Soc.. Publicado em: 2020-07
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7. Cerebral palsy: association between nutritional status and occurrence of oropharyngeal dysphagia
RESUMO Objetivo: verificar a associação entre estado nutricional e ocorrência de disfagia orofaríngea em indivíduos com paralisia cerebral. Métodos: estudo transversal, quantitativo, realizado com indivíduos entre dois e 20 anos. Foi avaliado comprometimento neuromotor, ocorrência e grau de disfagia, antropometria, consumo alimentar, via alimentar,
Rev. CEFAC. Publicado em: 28/10/2019
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8. Corrosion Behavior of 316L and Alloy 182 Dissimilar Weld Joint with Post-Weld Heat Treatment
ABSTRACT Austenitic stainless steel and nickel-base alloys welds are widely used in nuclear reactor components, plants of energy generation, chemical, and petrochemical industries, due to their high corrosion resistance. The post weld heat treatments (PWHT) are generally applied to welding in order to relieve the welding residual stress. The aim of this work
Matéria (Rio J.). Publicado em: 16/09/2019
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9. COMPARATIVE STUDY OF TiO2 AND ZnO APPLICATION IN HYBRID SOLAR CELLS USING COPOLYMER P3OT/P3MT
Hybrid inorganic-organic solar cells are an attractive alternative energy source because of their low-cost production and ability to make use of a large amount of solar radiation available. This work aims to evaluate different solar cells composed of TiO2 and ZnO with P3OT/P3MT copolymer. Layers of semiconductor oxides were deposited on transparent fluorine-
Quím. Nova. Publicado em: 02/05/2019
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10. Validation of the Pulmonary Embolism Severity Index for risk stratification after acute pulmonary embolism in a cohort of patients in Brazil
RESUMO Objetivo: Pulmonary Embolism Severity Index (PESI) foi desenvolvido para a estratificação de risco após tromboembolia pulmonar (TEP) aguda. Nosso objetivo foi validá-lo para uso no Brasil. Métodos: Estudo retrospectivo unicêntrico incluindo pacientes com TEP admitidos numa unidade de emergência. O PESI (versão original e simplificada) foi ca
J. bras. pneumol.. Publicado em: 25/02/2019
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11. Efecto de la concentración del silano MTMO sobre la protección contra la corrosión de acero electrocincado
ABSTRACT Superficial pretreatments based on silanes are one of the prominent alternatives to replace chromates as temporary protectors from the action of aggressive environments to metallic substrates. The barrier effect afforded by the silane film makes porosity, thickness and film homogeneity important issues in the protective effect. In the present work,
Matéria (Rio J.). Publicado em: 19/07/2018
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12. Relationship between Coffee Leaf Analysis and Soil Chemical Analysis
ABSTRACT: Research focused on adequate nutrition of plants is essential in modern coffee production to increase yield and develop more efficient management strategies with greater environmental and economic sustainability. The objectives of this study were to establish critical and optimal levels of soil fertility properties for high yielding Arabica coffee
Rev. Bras. Ciênc. Solo. Publicado em: 07/06/2018