Physics informed neural networks learning a two-qubit Hamiltonian

Machine learning techniques are employed to perform the full characterization of a quantum system. The particular artificial intelligence technique used to learn the Hamiltonian is called physics informed neural network (PINN). The idea behind PINN is the universal approximation theorem, which claims that any function can be approximate by a neural network if it contains enough complexity. Consequently, a neural network can be a solution of a physical model. Moreover, by means of extra data provided by the user, intrinsic physical parameters can be extracted from the approach called inverse-PINN. Here, we apply inverse-PINN with the goal of extracting all the physical parameters that constitutes a two qubit Hamiltonian. We find that this approach is very efficient. To probe the robustness of the inverse-PINN to learn the Hamiltonian of a two-qubit system, we use the IBM quantum computers as experimental platforms to obtain the data that is plugged in the PINN. We found that our method is able to predict the two-qubit parameters with 5% of accuracy on average.Comment: 5 pages, 4 figure

Fossa s?ptica biodigestora de placas

Cartilha elaborada a partir do projeto de extens?o 10envolver e saneamento b?sico rural, vinculado ao Grupo de Extens?o e Pesquisa em Agricultura Familiar dos Vales do Jequitinhonha e Mucuri (GEPAF Vales) - Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2021

Propylthiouracil-induced cutaneous vasculitis

The use of propylthiouracil (PTU) is associated with the development of different auto-antibodies, amongst them are antineutrophil cytoplasmic antibodies (ANCA) that are involved in the pathogenesis of ANCA associated systemic vasculitis. The case of a 46-years old woman who presented cutaneous vasculitis when taking PTU for Graves' disease is reported. Perinuclear ANCA (p-ANCA) was positive with titer > 1/320, but anti-myeloperoxidase antibodies were not detected. Skin biopsy showed leucocytoclastic vasculitis. The patient improved within ten days after withdrawing PTU and the resolution of hyperthyroidism was achieved with radioiodine (131I). The p-ANCA test remained positive > 1/320 eight months and four years after PTU withdrawal.O uso do propiltiouracil (PTU) está associado ao desenvolvimento de diferentes auto-anticorpos, entre eles anticorpos anticitoplasma de neutrófilos (ANCA), que estão envolvidos na patogênese das vasculites sistêmicas ANCA-associadas (VSAA). Será relatado o caso de um paciente do sexo feminino, de 46 anos, que apresentou vasculite cutânea durante o uso de PTU como terapêutica para doença de Graves. O ANCA com padrão perinuclear (p-ANCA) foi positivo em títulos > 1/320, porém anticorpos antimielo-peroxidase (MPO) não foram detectados. A biópsia de pele revelou uma vasculite leucocitoclástica. Houve melhora clínica em dez dias após a retirada do PTU e optou-se pelo iodo radioativo (I131) para o tratamento do hipertireoidismo. O p-ANCA manteve-se positivo em títulos > 1/320 em duas medidas, realizadas oito meses e quatro anos após a suspensão do PTU.Hospital do Servidor Público Estadual Francisco Morato de OliveiraUniversidade Federal de São Paulo (UNIFESP) Escola Paulista de MedicinaUNIFESP, EPMSciEL

Bulbos úmidos a partir da irrigação por gotejamento subsuperficial com água de abastecimento e efluente de esgoto tratado

The use of treated sewage effluent (TSE) combined with the subsurface drip irrigation (SDI) method in agriculture can decrease the costs of agricultural production, in attempts to fertigate crops more efficiently. In this study it was compared the dimensions of the wet bulb formed by the application of TSE and municipal water supply (MWS) in an Oxisoil. We have evaluated the effect of water quality and discharge between drippers used in sugarcane crop. Three trenches were opened and 21 three-rod TDR probes were setup in a mesh and a dripper was buried at 0.30 m, for each constant discharge of 1.0 L h-1and 1.6 L h-1. Comparing results from different wetted soil profiles it was observed that the vertical and horizontal dimensions of the wet bulb are similar for both MWS and TSE, being peculiars according to the discharges used and volume applied. Regardless the water quality, an increase of 60% in discharge decreased the deepest infiltration.352242253O uso de efluente de esgoto tratado (EET), combinado com o método de irrigação por gotejamento subsuperfical (IGS) na agricultura, pode reduzir os custos de produção agrícola, fertirrigando de maneira eficiente as culturas. Neste artigo, compararam-se as dimensões do bulbo úmido formado pela aplicação de EET e água de abastecimento municipal (AAM), em um Latossolo Vermelho distroférrico. Avaliou-se o efeito da qualidade da água e da vazão entre gotejadores utilizados na cultura da cana-de-açúcar. Três trincheiras foram abertas e 21 sondas de TDR com três hastes foram instaladas em malha, e um gotejador foi enterrado a 0,30 m, para cada vazão constante de 1,0 Lh-1 e 1,6 Lh-1. Comparando os resultados de diferentes perfis de umidade do solo, sugere-se que as dimensões vertical e horizontal do bulbo úmido sejam similares para a AAM e para o EET, sendo peculiares de acordo com as vazões utilizadas e o volume aplicado. Independentemente da qualidade da água, o aumento de 60% na vazão reduziu a infiltração em profundidade

Cyto- and genotoxic effects of metallic nanoparticles in untransformed human fibroblast

AbstractMetallic nanoparticles such as silver (Ag), cerium dioxide (CeO2) and titanium dioxide (TiO2) are produced at a large scale and included in many consumer products. It is well known that most metallic NPs are toxic to humans which raise concerns about these engineered particles. Various studies have already been published on the subject, however, almost all of these studies have been conducted in cancer or transformed cell lines. In this work we performed a comparative evaluation of these metallic NPs on normal untransformed human fibroblasts (GM07492) detecting cyto- and geno-toxic responses after exposure to these NPs. Our results showed that all three metallic NPs were able to cross the plasma membrane and were mainly found in endocytic vesicles. The Ag and TiO2 NPs affected mitochondrial enzymatic activity (XTT), increased DNA fragmentation, oxidative damage (Comet assay) and induced cell death mainly by the apoptotic pathway. Ag NPs increased GADD45α transcript levels and the phosphorylation of proteins γH2AX. Transient genotoxicity was also observed from exposure to CeO2 NPs while TiO2 NPs showed no increase in DNA damage at sub-cytotoxic concentrations. In comparison, Ag NPs were found to be the most cyto-genotoxic NPs to fibroblasts. Thus, these results support the use of normal fibroblast as a more informative tool to detect the mechanisms of action induced by metallic NPs

Coordination of power reactive management considering variations in wind speed from wind farms and power transmission limits

Proceedings of: XLI Ibero-Latin-American Congress on Computational Methods in Engineering, ABMEC. Foz do Iguaçu/PR, Brazil, November 16-19, 2020This paper presents a methodology that allows performing the optimized and coordinated management of reactive power injection in power systems with wind farms and other sources of reactive injection, such as capacitor banks or static voltage compensators, minimizing the losses in the transmission power system. The variation in wind speed is characterized by the Weibull distribution. The values of this distribution are used as input data for the optimal power flow model whose output provides a sample of values for defining the confidence intervals of the injected reactive power, as well as the voltage values in each bus of the electrical system. The proposed methodology was tested using a real 140 buses system to determine the dispatch of reactive sources available in the power system. The results found by the proposal can help to make a better management of the available reactive sources in the real-time operation

Combining eutectic solvents and pressurized liquid extraction coupled in-line with solid-phase extraction to recover, purify and stabilize anthocyanins from Brazilian berry waste

Pressurized techniques are straightforward for high-scale applications and highly controllable, which seems an excellent strategy for recovering unstable natural compounds. In this work, the main advance was the development of a platform based on the pressurized liquid extraction coupled in-line with a solid-phase extraction step (PLE-SPE) combined with the use of eutectic mixtures as solvents to promote an efficient extraction and purification of natural pigments from food wastes. Eutectic mixtures, conventionally known as (deep) eutectic solvents – (D)ES, are combinations of two or more substances with a lower melting point than any of their components. (D)ES are often referred as “green solvents” because they can potentially be more environmentally friendly than other solvents, especially volatile organic solvents (VOSs). Overall, (D)ES have the potential to contribute to the achievement of several of the SDGs (especially 3, 13, and 14) through their positive impacts on health, environment, and sustainable production and consumption practices. Thus, in this work, (D)ES were used as solvents to valorize Brazilian berry waste (Plinia cauliflora). Anthocyanins are the biomass's main compounds of commercial interest, mainly for food and cosmetic applications. However, there are several technological issues regarding color control due to their high sensitivity to light, heat, oxygen, and pH variations. Thus, the data achieved in this work highlighted the high efficiency and low environmental footprint of the PLE-SPE-(D)ES platform developed. The success of the downstream process here developed was proved by the high extraction efficiency and the purity level of the anthocyanins obtained. Besides, thermal stability analysis was evaluated, demonstrating that (D)ES are not only solvents but also stabilizing agents, improving the shelf-life of the extracted colorants.publishe

Análise de longo prazo e obtenção do ano meteorológico típico para a usina fotovoltica flutuante de sobradinho

Para avaliar a geração de energia de centrais fotovoltaicas, é necessário analisar as variáveis ambientais associadas ao recurso solar na região de interesse durante vários anos. Neste trabalho, medições realizadas no Lago de Sobradinho de irradiância global inclinada, temperatura ambiente e velocidade do vento são utilizadas para corrigir séries de longo prazo dessas variáveis disponibilizadas por bases de dados históricas. Após obter as séries de longo prazo adaptadas ao local, um passo a passo é descrito e exemplificado para obtenção do ano meteorológico típico para a região de interesse. Em seguida, o ano meteorológico típico obtido é usado como entrada no software PVsyst previamente parametrizado de acordo com as características da Usina Fotovoltaica Flutuante (UFF) de Sobradinho para avaliar a geração de energia típica da usina. Os resultados mostram que a geração típica de energia da UFF - Sobradinho no ano inicial do projeto deve ser, em média, de 1797 MWh/ano.To assess the energy generation of photovoltaic plants, it is necessary to analyze the environmental variables associated with the solar resource in the region of interest for several years. In this work, measurements performed at Sobradinho's Lake of global irradiance on inclined plane, ambient temperature and wind speed are used to correct long-term series of these variables provided by historical databases. After obtaining the long-term series adapted to the location, a step by step is described and exemplified to obtain the typical meteorological year for the region of interest. Then, the typical meteorological year obtained is used as input in the PVsyst software previously parameterized according to the characteristics of the floating photovoltaic power (FPP) plant of Sobradinho to evaluate the typical power generation of the plant. The results show that the typical energy generation of Sobradinho FPP in the initial year of the project should be, on average, 1797 MWh/year.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Segurança do paciente na percepção da enfermagem e medicina em unidades de terapia intensiva neonatal

Objetivo: Descrever a segurança do paciente na percepção dos profissionais de enfermagem e medicina de Unidades de Terapia Intensiva Neonatal.Método: Pesquisa qualitativa descritiva exploratória na qual foi utilizado o instrumento Hospital Survey on Patient Safety Culture para a coleta de dados. Participaram da pesquisa 28 profissionais de enfermagem e medicina de três Unidades de Terapia Intensiva Neonatal de Florianópolis/Santa Catarina, no período de 2013 a 2015. Para a análise dos dados, utilizou-se a Análise Temática de Conteúdo.Resultados: Emergiram as seguintes categorias: percepção e estratégias para a segurança do paciente; fatores de risco que interferem na segurança do paciente; desafios na comunicação de erros relacionados ao cuidado em saúde.Conclusões: A segurança do paciente na visão dos profissionais refletiu a importância do cuidado seguro e da identificação de fatores de risco nas condições de trabalho que predispõem a erros. A comunicação de situações de risco, o desenvolvimento da cultura de segurança e a capacitação tornam-se fundamentais.Palavras-chave: Segurança do paciente. Unidades de terapia intensiva neonatal. Enfermagem neonatal