DESENVOLVIMENTO DE SUPERF?CIES SELETIVAS EM FREQU?NCIA COM BANDA DUPLA DE OPERA??O BASEADAS NA GEOMETRIA ESTRELA DE QUATRO BRA?OS ASSOCIADA A AN?IS TRAPEZOIDAIS

A principal finalidade das telecomunica??es ? suprir a necessidade humana de se comunicar ? dist?ncia. Ultimamente, devido ao intenso crescimento de aplica??es que utilizam os sistemas de telecomunica??es, a demanda de disponibilidade de bandas de frequ?ncia do espectro eletromagn?tico tem se tornado cada vez maior, gerando necessidades de novas tecnologias para suprir estes requisitos espec?ficos tanto de resposta em frequ?ncia, como n?veis de pot?ncia. Neste contexto, as FSS v?m recebendo a aten??o de diversos grupos de pesquisa, pois podem desempenhar um papel fundamental na otimiza??o de circuitos e antenas. Neste trabalho, ? proposto o desenvolvimento de superf?cies seletivas em frequ?ncia com banda dupla de opera??o, baseadas na geometria, estrela de quatro bra?os associada a an?is trapezoidais. Inicialmente, as caracter?sticas de cada geometria s?o analisadas separadamente. Em seguida, discute-se o efeito da associa??o das duas geometrias. S?o propostas as equa??es iniciais de projeto e apresentados os resultados num?ricos, obtidos com a simula??o com o software Ansys Designer?, sendo esses comparados com resultados experimentais, observando-se uma boa concord?ncia entre os mesmos. Como exemplo de potencial aplica??o, uma frequ?ncia de resson?ncia indesejada ? deslocada e uma FSS com banda dupla de opera??o ? obtida. Considerando as caracter?sticas observadas, assim como a flexibilidade no ajuste da resposta em frequ?ncia, a geometria proposta ?, potencialmente, atrativa para aplica??es tais como FSS reconfigur?veis e paredes inteligentes

Fave: uma proposta para verifica??o de extratores de dados de p?ginas html

The constant growth of online services, for example, price and product comparison, content aggregators, among others, drives the demand for solutions for data extraction. In order for information from the Internet to be compared or grouped, it is first necessary to extract relevant data from web pages in a structured format. The techniques that provide data extraction are known as wrappers. Each wrapper is developed based on the HTML page and produces a set of structured information. But when an HTML page is modified, wrapper may stop working or works incorrectly. Currently there are several studies to perform the automatic adjustment of the data extraction system, procedure known as wrapper maintenance. This work presents some techniques of wrapper maintenance and proposes an improvement in the method of extractor automation based on the presented techniques.O constante crescimento de servi?os online, por exemplo, compara??o de pre?os e produtos, agregadores de conte?dos, entre outros, impulsiona a demanda por solu??es para a extra??o de dados. Para que informa??es oriundas internet possam ser comparadas ou agrupadas, ? necess?rio extrair os dados relevantes das p?ginas web em um formato estruturado. As t?cnicas que providenciam a extra??o de dados s?o conhecidas como wrappers. Cada wrapper ? desenvolvido usando como base a p?gina HTML e produz um conjunto de informa??es estruturadas. Por?m quando uma p?gina HTML ? modificada, o wrapper para de funcionar ou funciona de maneira incorreta. Atualmente j? existem diversos estudos para fazer o ajuste autom?tico do sistema de extra??o de dados, procedimento conhecido como wrapper maintenance. Este trabalho apresenta algumas t?cnicas de wrapper maintenance e prop?e uma melhoria no m?todo de automa??o de extratores tomando como base as t?cnicas apresentadas

SATURN - uma nova ferramenta de corre??o de dados U-Pb para LA-ICP-MS.

Programa de P?s-Gradua??o em Evolu??o Crustal e Recursos Naturais. Departamento de Geologia, Escola de Minas, Universidade Federal de Ouro Preto.Na geocronologia, s?o tratados e reduzidos dados que permitem calcular raz?es isot?picas e incertezas de amostras analisadas em espectr?metros de massas. Dentre as t?cnicas existentes para aquisi??o de dados, este trabalho utilizou como enfoque LA-ICP-MS (Laser Ablation-Inductively Coupled-Mass Spectrometry) para o m?todo geocronol?gico U-Th-Pb. A aquisi??o de dados, seja ela pelo sistema Multi-collector (MC), Setor Magn?tico (SF) ou Quadrupole (Q), necessita de tratamento e redu??es. Os dados adquiridos passam por corre??es (ex.: interfer?ncias isob?ricas e fracionamento induzido pelo laser) e redu??es, as quais consistem no c?lculo das raz?es isot?picas, e incertezas. As incertezas totais resultam da propaga??o das incertezas calculadas, quanto menos os dados necessitam serem reduzidos (corrigidos) menores ser?o as incertezas. Para este tratamento de dados, existem softwares dispon?veis (ex.: Glitter, Iolite) que mesmo que possuam uma interface gr?fica de f?cil utiliza??o e possibilitem a redu??o de dados on-line, n?o realizam corre??es de Pb comum ou o controle de dead-time dos contadores de ?ons. Como alternativa para estes softwares, existe a possibilidade de um tratamento de dados off-line utilizando de planilhas de Excel? e macros VBA. Neste ?ltimo caso, ? poss?vel a aplica??o das corre??es necess?rias, por?m o resultado final n?o ? obtido de modo pr?tico e din?mico. Na busca por preencher essas lacunas, quanto ao tratamento de dados na geocronologia, o atual trabalho buscou o aperfei?oamento de um software de redu??o de dados. Este software, desenvolvido no Departamento de Geologia da Universidade Federal de Ouro Preto, originalmente fez uso da linguagem computacional MatLAB?. A escolha por esta linguagem de programa??o se deve ao ambiente de f?cil utiliza??o para desenvolvimento dos algoritmos e interface gr?fica, al?m de ferramentas nativas, fun??es inbuilt para processamento matem?tico-estat?stico e ambiente din?mico para depura??o dos dados. Com o objetivo de aprimorar essa ferramenta, foram extra?dos da literatura as equa??es para c?lculo de concentra??es, raz?es, idades, esquemas de corre??o de diversas interfer?ncias e propaga??o de incertezas, sempre considerando as devidas adapta??es para dados origin?rios tanto do Neptune ICP-MS-MC quanto do Element II ICP-MS. Com uma avalia??o acerca dos m?todos e equa??es aplicadas no processo, componentes de corre??es foram eliminados ou modificados, resultando na obten??o de melhores incertezas. Os dados analisados anteriormente, e previamente cedidos, em projetos realizados por pesquisadores do Departamento de Geologia da Universidade Federal de Ouro Preto, foram comparados quanto ? sua redu??o no SATURN e por outros m?todos utilizados atualmente pelo departamento. Atrav?s da compara??o, com resultados preliminares, foram observadas menores incertezas aliadas a um processo mais eficiente e ?gil.In geochronology, data are analyzed and reduced to calculate isotope ratios and uncertainties of samples analyzed in mass spectrometers. Among the existing techniques for data acquisition, this work used as LA-ICP-MS (Laser Ablation-Inductively Coupled-Mass Spectrometry) approach for the U-ThPb geochronological method. Data acquisition, whether through the Multi-collector (MC), Sector Field (SF) or Quadrupole (Q), requires treatment and reductions. The acquired data undergoes corrections (eg isobaric interferences and laser induced fractionation) and reductions, which are the calculation of the isotope ratios, and uncertainties. The total uncertainties result from the propagation of the calculated uncertainties, the less the data need to be reduced (corrected) the lower the uncertainties. For this data processing, there are software available (eg, Glitter, Iolite) that even if they have a friendly graphical interface and make it possible to reduce data online, do not perform common Pb corrections or deadtime control of counters of ions. As an alternative to these software, there is the possibility of off-line data processing using Excel? spreadsheets and VBA macros. In the latter case, it is possible to apply the necessary corrections, but the final result is not obtained in a practical and dynamic way. In the search to fill these gaps, regarding the treatment of data in geochronology, the present work sought the improvement of data reduction software. This software, developed in the Department of Geology of the Federal University of Ouro Preto, originally made use of MatLAB? computational language. The choice for this programming language is due to the friendly environment for development of algorithms and graphical interface, in addition to native tools, inbuilt functions for mathematical-statistical processing and dynamic environment for data debugging. In order to improve this tool, was extracted from the literature the equations for calculating concentrations, ratios, ages, schemes for correction of various interferences and propagation of uncertainties, considering the appropriate adaptations for data from both Neptune ICP-MS-MC and Element II ICP-MS-SF. With an evaluation of the methods and equations applied in the process, components of corrections were eliminated or modified, resulting in better uncertainties. The previously analyzed data, previously assigned, in projects carried out by researchers of the Department of Geology of the Federal University of Ouro Preto, were compared in terms of their reduction in SATURN and other methods currently used by the department. Through the comparison, with preliminary results, smaller uncertainties were observed together with a more efficient and agile process

O USO DA TECNOLOGIA NA PANDEMIA: DIFICULDADES DE ALUNOS NOS CURSOS NA MODALIDADE A EDUCA??O ? DIST?NCIA

Esta revis?o teve como objetivo analisar e expor para todas as dificuldades que os alunos dos cursos de educa??o a dist?ncia t?m como tempo reduzido no estudo sobre as atividades do curso e sua vida social. A proposta desta revis?o ? que os alunos t?m que se organiza, tanto do seu tempo para estudar e quanto das responsabilidades pessoais, onde n?o intervir? na quest?o do tempo dedicado aos estudos e as outras atividades. O presente trabalho ? uma revis?o bibliogr?fica. A coleta das informa??es foi realizada atrav?s do levantamento e an?lise de ideias diferentes retirada de artigos, disserta??es de mestrado, revistas, tese que tratam a tem?tica apresentada. Conclui-se que ficou constado que durante esta revis?o que os alunos dos cursos em EaD seja capaz de organizar o seu tempo de estudo de acordo com suas possibilidades apresentadas no curso nos ? dist?nci

Avalia??o patrimonial de pr?dios urbanos no ?mbito tribut?rio

Mestrado em Engenharia Civil e do Ambiente : Especializa??o em Constru??es Civis na Escola Superior de Tecnologia e Gest?o do Instituto Polit?cnico de Viana do CasteloEsta disserta??o pretende estudar a ?Avalia??o Patrimonial de Pr?dios Urbanos no ?mbito Tribut?rio?, que constitui por si, uma ?rea n?o muito vis?vel na avalia??o imobili?ria, n?o obstante a sua import?ncia no tecido socio-econ?mico do pa?s. Inicialmente, haver? uma introdu??o ao conceito do acto de avaliar e de valor de mercado e aos m?todos de avalia??o tradicionais, numa abordagem est?tica, nomeadamente o m?todo comparativo, o m?todo de custo (vertente evolutiva e involutiva) e o m?todo do rendimento. A abordagem ? avalia??o imobili?ria tribut?ria ter? como enfoque o C?digo do Imposto Municipal sobre Im?veis (CIMI), publicado pelo DL n? 287/2003 de 12 de novembro, na reda??o atualizada e portarias conexas, procurando uma s?ntese geral do mesmo. A avalia??o patrimonial tribut?ria com as suas regras espec?ficas, ter? o seu enfoque exclusivamente nos pr?dios urbanos, n?o levando em aten??o os pr?dios r?sticos. Atrav?s da proposta de resolu??o de dois casos de estudo, nomeadamente o caso 1 (Avalia??o de moradia sujeita a amplia??o n?o suscet?vel de utiliza??o independente) e o caso 2 (Avalia??o de terreno com capacidade construtiva), como casos t?picos e comuns da avalia??o tribut?ria, pretende-se tornar p?blico o m?todo de avalia??o que est? por detr?s do CIMI, que manifestamente est? envolto em algum desconhecimento para o p?blico em geral.This dissertation intends to study the "Patrimonial Evaluation of Urban Buildings in the Tax Area", which in itself constitutes an area not very visible in the real estate appraisal, despite its importance to the country economy. Initially, there will be an introduction to the concept of valuation act and market value and to traditional valuation methods, in a static approach, namely the comparative method, the cost method (evolutionary and involutionary) and the yield method. The approach to tax real estate evaluation will focus on the Municipal Property Tax Code (CIMI), published by Decree number 287/2003 of November 12, in the updated version and related directives, seeking a general summary of the same. The tax assessment with its specific rules, will focus exclusively on urban buildings, not taking into account the rustic buildings. Through the proposed resolution of two case studies, namely case 1 (Evaluation of housing subject to extension not susceptible of independent use) and case 2 (Evaluation of land with constructive capacity), as typical and common cases of tax assessment, it is intended to make public the method of evaluation that lies behind CIMI, which is manifestly involved in some unfamiliarity for the general public. KEYWORDS

Dual crop coefficient approach in vitis vinifera L. cv. Loureiro

Vineyard irrigation management in temperate zones requires knowledge of the crop water requirements, especially in the context of climate change. The main objective of this work was to estimate the crop evapotranspiration (ETc) of Vitis vinifera cv. Loureiro for local conditions, applying the dual crop coefficient approach. The study was carried out in a vineyard during two growing seasons (2019?2020). Three irrigation treatments, full irrigation (FI), deficit irrigation (DI), and rainfed (R), were considered. The ETc was estimated using the SIMDualKc model, which performs the soil water balance with the dual Kc approach. This balance was performed by calculating the basal coefficients for the grapevine (Kcb crop) and the active soil ground cover (Kcb gcover), which represent the transpiration component of ETc and the soil evaporation coefficient (Ke). The model was calibrated and validated by comparing the simulated soil water content (SWC) with the soil water content data measured with frequency domain reflectometry (FDR). A suitable adjustment between the simulated and observed SWC was obtained for the 2019 R strategy when the model was calibrated. As for the vine crop, the best fit was obtained for Kcb full ini = 0.33, Kcb full mid = 0.684, and Kcb full end = 0.54. In this sense, the irrigation schedule must adjust these coefficients to local conditions to achieve economically and environmentally sustainable production.E518-D54F-9490 | Susana Miguel Afonso Mendes MouraN/

nutrition and performance in football

Nutrition is an undeniable part of promoting health and performance among football (soccer) players. Nevertheless, nutritional strategies adopted in elite football can vary significantly depending on culture, habit and practical constraints and might not always be supported by scientific evidence. Therefore, a group of 28 Portuguese experts on sports nutrition, sports science and sports medicine sought to discuss current practices in the elite football landscape and review the existing evidence on nutritional strategies to be applied when supporting football players. Starting from understanding football?s physical and physiological demands, five different moments were identified: preparing to play, match-day, recovery after matches, between matches and during injury or rehabilitation periods. When applicable, specificities of nutritional support to young athletes and female players were also addressed. The result is a set of practical recommendations that gathered consensus among involved experts, highlighting carbohydrates periodisation, hydration and conscious use of dietary supplements.D915-7373-ED16 | Cesar LeaoN/

Antileishmanial activity of Handroanthus serratifolius (Vahl) S. Grose (Bignoniaceae).

This study aimed to evaluate the leishmanicidal activity of ethanol extract, fractions, and isolated substance from Handroanthus serratifolius against Leishmania amazonensis. Furthermore, this activity was related to cytotoxicity, and the selectivity index was determined.The ethanol extract was obtained by maceration of the stem powder, and the extract was subjected to fractionation on chromatographic column. The lapachol was obtained by acid base extraction followed by purification in chromatographic column. The antipromastigote activity and cytotoxicity tests were carried out by the cell viabilitymethod (MTT).Modified THP-1 cells were infected with L. amazonensis promastigotes and treated for 24 h with different concentrations of the extract, fractions, and lapachol. Theethanol extract, dichloromethane, and ethyl acetate fractions were not active against promastigotes (IC50 > 200 ?g/mL) or cytotoxic (CC50 > 500 ?g/mL), and the selectivity index (SI)was greater than 2.5.The ethyl acetate fractionwas active only in promastigotes; it is not cytotoxic (CC50 > 500 ?g/mL, SI > 5).The lapachol was selectively active only against amastigote (IS > 2.5, CC50 > 500 ?g/mL). In summary, lapachol and ethyl acetate fraction are promising against amastigote and promastigote forms, respectively