Fatec Jahu

The parametric region in the plane defined by the ratios of the energies of the subsystems and the three-body ground state, in which Efimov states can exist, is determined. We use a renormalizable model that guarantees the general validity of our results in the context of short-range interactions. The experimental data for one- and two-neutron separation energies, implies that among the halo nuclei candidates, only ${}^{20}\mathrm{C}$ has a possible Efimov state, with an estimated energy less than 14 KeV below the scattering threshold.

The usefulness of a scale-independent approach to identify Efimov states in three-body systems is shown by comparing such an approach with a realistic calculation in the case of three helium atoms. We show that the scaling limit is realized in practice in this case, and suggest its application to study other similar systems, including the case where two kinds of atoms are mixed. We also consider the observed large scattering length of $\mathrm{the}{ }^{87}\mathrm{Rb}$ dimer to estimate the critical value of the ground-state energy of the corresponding trimer $(>~1.5 \mathrm{mK})$, in order to allow for one Efimov state above the ground state.

A integração das Tecnologias de Informação e Comunicação à rotina das escolas se faz hoje necessária, uma vez que possuem potencial para transformar o processo de ensino e aprendizagem e podem contribuir para o desenvolvimento de diversas habilidades nos jovens estudantes como, por exemplo, o raciocínio lógico e a capacidade de resolução de problemas. Nesse sentido, esse trabalho apresenta a experiência vivenciada em um projeto, realizado no âmbito de um programa de Pré-Iniciação Científica, cujo objetivo principal foi desenvolver noções básicas do "pensamento computacional", junto aos alunos do primeiro ano do ensino médio de uma escola pública, por meio dos recursos do Scratch.

Computer networks have evolved due to new trends in the society's needs since their emergence as a way of providing remote access and sharing of computational resources. The architecture inflexibility of the computer networks presents a challenge for researchers, since their experiments can hardly be evaluated in real networks. Thus, in general, tests of new technologies are conducted on network simulators, which imply in a streamline of the reality. The paradigm of Software Defined Networks (SDN) and OpenFlow architecture, offer a way for the implementation of a programmable network architecture, able to be implemented gradually in production networks, which offers the possibility of separating the control mechanisms of the many traffic flows served, so that a scientific experiment can be performed in a real network (adapted for SDN) without interfering with its operation. This paper contextualizes the existing problems in current computer networks, and presents the SDN network as one of the main proposals for the viability of the Internet of the Future. In this context, it is discussed the OpenFlow architecture, which allows the creation of applications for Software Defined Networks. Finally it is presented the network simulator SDN, the Mininet, which implements the OpenFlow interface in a network simulation scenario containing a controller POX with two components, one OpenFlow switch and three nodes. The main objective was to evaluate the communication and bandwidth between nodes.

Summary Alcohol‐free beer with isotonic properties is getting more popular and its production can be carried out by different production strategies; however, interrupted fermentation is still a challenge. Therefore, the objective of this study was to develop a low‐alcohol isotonic beer (<0.5% v/v) by interrupted fermentation. Moreover, the major objective is to compare the developed product to commercial beverages (sports drinks, ‘Pilsen' regular beer, alcohol‐free beers and low‐alcohol isotonic beer). The beverages were evaluated based on pH , alcohol content (% v/v), total titratable acidity ( mE q L −1 ), osmolality ( mO smol kg −1 ), bitterness International Bitterness Units, colour European Brewery Convention, total phenolic compounds (mg L −1 gallic acid), reducing and total sugars (%) and Na and K contents (mg L −1 ). The developed low‐alcohol isotonic beer presented characteristics similar to sports drinks, with the advantage of being richer in phenolic compounds and suitable osmolality. Despite salts were added in its formulation, the grades attributed to all beers employed in the sensory evaluation, as well as the purchase intention did not present significant differences.

Este trabalho apresenta os resultados da avaliação dos resíduos sólidos domiciliares no município de Jaú (SP) por meio de amostragens realizadas em 2001 e 2010. Foram determinados a quantidade per capita, o peso específico e a composição gravimétrica dos resíduos sólidos urbanos gerados nos Jardins América e Ameriquinha em 2010, comparando os resultados obtidos aos da amostragem realizada em 2001 com a mesma metodologia. Constatou-se que a geração de resíduos aumentou 34,9%, enquanto a população cresceu 29,6% no período, levando a um incremento de 4,0% na geração per capita de resíduos, que passou de 618 g. hab-1.dia-1 para 643 g. hab-1.dia-1. Dos resíduos gerados no município, aproximadamente 50% são de matéria orgânica, 25% de rejeitos e 25% de materiais recicláveis, percentuais que pouco se alteraram nas duas amostragens. Entretanto, os resíduos do tipo "plástico mole", entre os recicláveis, foram aqueles cuja geração teve o maior aumento percentual (59%) na avaliação.

A Inteligência Artificial (IA) tem sido uma promissora aliada na educação, especialmente, após a pandemia de Covid-19. Este artigo teve como objetivo discutir os impactos da IA na educação, explorando suas aplicações nas diversas faixas etárias e modalidades de ensino. A metodologia se configurou em revisão bibliográfica de abordagem qualitativa em bases gratuitas, nas quais se identificaram as principais tecnologias de IA em uso na educação, além dos desafios e limitações associados ao seu uso. Discutiram-se estratégias para maximizar o potencial da IA na melhoria do processo de ensino-aprendizagem. Os resultados apontaram que a IA pode contribuir para personalizar a aprendizagem, criar ambientes educacionais mais autônomos, otimizar a avaliação dos alunos, entre outros. Entretanto, é fundamental considerar suas implicações éticas, além das questões relacionadas aos aspectos neurológicos, cognitivos e emocionais, especialmente, quando se trata do uso da IA por crianças. Abstract Artificial Intelligence (AI) has been a promising ally in education, especially after the Covid-19 pandemic. This article aimed at discussing the impacts of AI on education, exploring its applications in different age groups and teaching modalities. The methodology consisted of a bibliographic review with a qualitative approach on a free basis. The main AI technologies in use in education were identified, in addition to the challenges and limitations associated with their use. Strategies to maximize the potential of AI in improving the teaching-learning process were discussed. The results showed that AI can contribute to personalizing learning, creating more autonomous educational environments, optimizing student assessment, among others. However, it is essential to consider its ethical implications and issues related to neurological, cognitive and emotional aspects, especially when it comes to the use of AI by children.

With the expansion of the cultivation of eucalyptus into areas with limited water resources, recommending genotypes which are tolerant to low water availability is important in order to maximize productivity under such conditions. The aim of this work therefore was to evaluate five hybrids of Eucalyptus grandis x E. urophylla (H1 to H5) subjected to four irrigation regimes in the greenhouse: daily (IR1), every two days (IR2), every four days (IR4) and every six days (IR6). The following characteristics were evaluated: photosynthetic rate (A), transpiration (E), stomatal conductance (g s), leaf water potential (Ψw), leaf relative water content, photochemical efficiency and chlorophyll content index. Evaluations of A, g s and E were carried out on two occasions: 1 - under stress, at the end of the interval between irrigations for each treatment; and 2 - in recovery, 48 h after irrigation for all plants in the experiment. On average, there was reduction of 25 and 40% in A values, 40 and 55% in g s, 15 and 22% in E, and 96 and 103% in Ψw respectively in those plants under regimes IR4 and IR6, compared to under IR1. Stomatal conductance had only partially recovered 48 h after irrigation, and due to being more sensitive, its changes are a good indication of water stress. Hybrid H3 is the most tolerant and H5 the most sensitive to a reduction in water availability in soil.

This study aim to compare the action of antimicrobials: hop extract, oregano essential oil (OEO) and chlorine dioxide during the fermentation process. For this purpose, three studies have been conducted. In the first two studies, control treatment, Kamoran® (3 mg L-1), oregano oil (0.5%) and hop extract (10 mg L-1) were used. In the third experiment, hop extract was replaced by chlorine dioxide (0.15 mg L-1) and oregano concentration was also increased to 1%. The quality of mash and wine obtained was evaluated. During the fermentation process, feasibility analyses and initial and final contamination analyses were carried out. It was verified that OEO has no antimicrobial effect, on the other hand, it has properties that can be antifoaming and/or dispersant. Hop extract reduced the final contamination of the fermentation of the mash of sugarcane juice and molasses. The antimicrobial treatments used did not reduce the viability of yeast cells. Additional keywords: biocides; chlorine dioxide; hop; Kamoran®; oregano oil.

Este artigo discute sobre práticas pedagógicas para ensino de programação de computadores por meio de Robótica Pedagógica e Pensamento Computacional. Tem como objetivo trazer uma proposta de ensino que possa amenizar as principais dificuldades de alunos iniciantes em programação, auxiliando nos aspectos relacionados a construção da solução de problemas.

Este estudo avaliou a viabilidade do aproveitamento da água das chuvas no Tanque de Provas, utilizado em ensaios de modelos reduzidos de embarcações da Faculdade de Tecnologia de Jahu - Fatec Jahu, SP. O trabalho considerou os dados pluviométricos locais, a área de cobertura para captação e a demanda de água. Foi estimada a necessidade de água no processo de limpeza por filtragem, lavagem e evaporação do Tanque de Provas. O dimensionamento do reservatório foi calculado conforme as metodologias descritas na NBR 15527, que determina os requisitos para o aproveitamento de coberturas em áreas urbanas para fins não potáveis. O volume do reservatório selecionado como a melhor alternativa após as análises comparativas considerou as restrições locais e o risco de não atendimento, permitiu o máximo aproveitamento da água pluvial e resultou na maior redução possível da demanda de água potável do sistema de abastecimento público.

O objetivo deste trabalho foi identificar novos marcadores microssatélites, ligados ao gene Rpp5 de resistência à ferrugem-da-soja, e validar os marcadores previamente mapeados, para que possam ser utilizados em programas de seleção assistida por marcadores moleculares (SAM). Para tanto, uma população F2 com 100 indivíduos, derivada do cruzamento entre a PI 200526 e a cultivar Coodetec 208, suscetível à ferrugem, foi artificialmente infectada e avaliada quanto à sua reação de resistência à ferrugem. Marcadores microssatélites foram testados nos genitores e em dois "bulks" contrastantes, para a identificação de marcadores ligados. Dois novos marcadores, potencialmente associados à resistência, foram testados em plantas individuais, e se constatou que eles estão ligados ao gene Rpp5 e estão presentes no grupo de ligação N da soja. A eficiência de seleção foi determinada em relação a todos os marcadores ligados ao gene Rpp5, e a combinação entre os marcadores Sat_275+Sat_280 foi de 100%.

RESUMO: Este artigo tenciona refletir sobre os benefícios e limitações entre as modalidades de ensino do e-learning, b-learning e m-learning, assim como propor uma reflexão sobre as práticas pedagógicas realizadas neste meio on-line em comparação com o meio presencial. Busca-se, assim, conceituar cada uma das modalidades descritas, a partir de um estudo exploratório e bibliográfico, mostrando as possíveis vantagens e desvantagens de suas aplicações. Desse modo, verifica-se que é preciso ponderar sempre a qualidade do processo de ensino-aprendizagem, uma vez que cada modalidade sempre vai ter seus prós e contras. Para isso, é importante considerar as especificidades do curso a ser ministrado, ou seja, suas disciplinas, seu conteúdo ou mesmo o público a que ele é destinado. Para que determinada modalidade funcione realmente, mais do que somente o uso das tecnologias, é necessário considerar as necessidades e o engajamento de cada participante.

Atualmente, cerca de dois bilhões de pessoas carecem de acesso à água de qualidade. No Brasil, tal situação é agravada por questões geográficas, adensamento populacional e poluição. Considerando que a bacia hidrográfica é a unidade de planejamento ambiental no Brasil, pressupõe-se que a realização de seu manejo de forma adequada e aplicação das políticas correlacionadas favorecem a promoção dos usos múltiplos da água. O presente artigo visa fornecer uma visão geral da gestão de recursos hídricos, adotando a bacia hidrográfica como unidade de manejo, abordando aspectos básicos ligados aos recursos hídricos, o histórico do sistema de gestão de recursos hídricos brasileiro e apontar elementos que podem ser empregados no manejo de bacias hidrográficas. Os esforços destinados à gestão dos recursos hídricos no Brasil se iniciaram em 1934, o manejo das bacias hidrográficas deve ser pautado na implementação de estratégias conservacionistas, do saneamento ambiental e da promoção da articulação entre os instrumentos existentes. O processo de gerenciamento deve envolver todos os interessados e os recursos arrecadados com a cobrança pelo uso da água devem favorecer a condução das ações nas bacias hidrográficas. O Grau de Hemerobia consiste em uma ferramenta útil para verificar a influência da paisagem sobre a qualidade da água e eventuais desregulações dos ecossistemas. Water resource management and hydrographic basin management in Brazil: basic elements, historic and strategies A B S T R A C TCurrently, about two billion people lack access to quality water. In Brazil, this situation is aggravated by geographical issues, population density, and pollution. Considering that the hydrographic basin is the environmental planning unit in Brazil, we assumed that the performance of its management in an appropriate manner and application of related policies favors the promotion of multiple water uses. This article aims to provide an overview of water resources management, adopting the hydrographic basin as a management unit, addressing basic aspects related to water resources, the historic of the Brazilian water resource management system and pointing out elements that can be used in the management of hydrographic basins. Efforts destined to the water resources management in Brazil began in 1934, the management of hydrographic basins must be guided by the implementation of conservationist strategies, the implementation of environmental sanitation and promoting the articulation between the existing instruments. The management process needs to involve all stakeholders and the resources collected from charging for the use of water favors the conduct of actions in hydrographic basins. The Hemeroby Degree is a useful tool for verifying the influence of the landscape on water quality and possible deregulation of the ecosystems.Keywords: Aquatic Ecosystems; Management; Planning; Environmental Policy.

DOAJ is a unique and extensive index of diverse open access journals from around the world, driven by a growing community, committed to ensuring quality content is freely available online for everyone.

In this study it was evaluated the effects of hydraulic retention time (HRT) and Organic Loading Rate (OLR) on the performance of UASB (Upflow Anaerobic Sludge Blanket) reactors in two stages treating residual waters of swine farming. The system consisted of two UASB reactors in pilot scale, installed in series, with volumes of 908 and 188 L, for the first and second stages (R1 and R2), respectively. The HRT applied in the system of anaerobic treatment in two stages (R1 + R2) was of 19.3, 29.0 and 57.9 h. The OLR applied in the R1 ranged from 5.5 to 40.1 kg CODtotal (m³ d)-1. The average removal efficiencies of chemical oxygen demand (COD) and total suspended solids (TSS) ranged, respectively, from 66.3 to 88.2% and 62.5 to 89.3% in the R1, and from 85.5 to 95.5% and 76.4 to 96.1% in the system (R1 + R2). The volumetric production of methane in the system (R1 + R2) ranged from 0.295 to 0.721 m³CH4 (m³ reactor d)-1. It was found that the OLR applied were not limiting to obtain high efficiencies of CODtotal and TSS removal and methane production. The inclusion of the UASB reactor in the second stage contributed to increase the efficiencies of CODtotal and TSS removal, especially, when the treatment system was submitted to the lowest HRT and the highest OLR.

Encounters between flowers and invertebrates are key events for the functioning of tropical forests. Assessing the structure of networks composed of the interactions between those partners leads to a better understanding of ecosystem functioning and the effects of environmental factors on ecological processes. Gathering such data is, however, costly and time-consuming, especially in the highly diverse tropics. We aimed to provide a comprehensive repository of available flower-invertebrate interaction information for the Atlantic Forest, a South American tropical forest domain. Data were obtained from published works and "gray literature," such as theses and dissertations, as well as self-reports by co-authors. The data set has ~18,000 interaction records forming 482 networks, each containing between one and 1061 interaction links. Each network was sampled for about 200 h or less, with few exceptions. A total of 641 plant genera within 136 different families and 39 orders were reported, with the most abundant and rich families being Asteraceae, Fabaceae, and Rubiaceae. Invertebrates interacting with these plants were all arthropods from 10 orders, 129 families, and 581 genera, comprising 2419 morphotypes (including 988 named species). Hymenoptera was the most abundant and diverse order, with at least six times more records than the second-ranked order (Lepidoptera). The complete data set shows Hymenoptera interacting with all plant orders and also shows Diptera, Lepidoptera, Coleoptera, and Hemiptera to be important nodes. Among plants, Asterales and Fabales had the highest number of interactions. The best sampled environment was forest (~8000 records), followed by pastures and crops. Savanna, grasslands, and urban environments (among others) were also reported, indicating a wide range of approaches dedicated to collecting flower-invertebrate interaction data in the Atlantic Forest domain. Nevertheless, most reported data were from forest understory or lower strata, indicating a knowledge gap about flower-invertebrate interactions at the canopy. Also, access to remote regions remains a limitation, generating sampling bias across the geographical range of the Atlantic Forest. Future studies in these continuous and hard-to-access forested areas will yield important new information regarding the interactions between flowers and invertebrates in the Atlantic Forest. There are no copyright restrictions on the data set. Please cite this data paper if the data are used in publications and teaching events.

Os objetivos deste trabalho foram confirmar a herança da resistência da PI 459025 (Rpp4) à ferrugem-asiática-da-soja e identificar marcadores moleculares do tipo RAPD, ligados a este gene de resistência, em populações de soja. Pelo cruzamento dos genitores contrastantes PI 459025 x Coodetec 208 obteve-se uma população, cujas populações das gerações F2 e F2:3 foram artificialmente infectadas e avaliadas quanto à reação ao fungo Phakopsora pachyrhizi, pelo tipo de lesão (RB - resistente e TAN - suscetível). Com os resultados da avaliação fenotípica, dois "bulks" foram obtidos com DNA de plantas homozigóticas resistentes e suscetíveis, respectivamente, pela análise de "bulks" segregantes. De 600 iniciadores RAPD aleatórios, foram identificados três com fragmentos polimórficos entre os "bulks" e parentais contrastantes quanto à resistência. Pela análise do qui-quadrado, confirmaram-se: a herança monogênica, com dominância completa quanto à resistência ao patógeno, e a segregação 3:1 para a presença de banda dos três marcadores. Os três marcadores são ligados respectivamente a 5,1, 6,3 e 14,7 cM de distância do loco de resistência, em fase de repulsão no grupo de ligação G, o que foi confirmado pela utilização do marcador microssatélite Satt288. Estes marcadores são promissores na seleção assistida para resistência à ferrugem-asiática-da-soja.

Serious games are being used ever more for purposes of learning, training and performance evaluation. However, to be successful as a final product, its development has to be systematic and multi-disciplinary. Thus, the choice of support tools impact beyond the financial cost. This paper describes an overview of the iterative and integrative methodology for developing serious games, expanding the specification with open source tools. Appropriate tools are reviewed and selected in order to provide a set of applications that could be used according to serious games design needs.

The aim of this work was to study the influence of natural vegetation in two subwatersheds of the Tietê-Jacaré Water Resources Management Unit in São Paulo State on the pulse of their rivers. In Jacaré-Pepira Subwatershed, having higher remaining cover index, pulses were more predictable and had lower amplitude in the study period, indicating less perturbation of the water body and higher resilience of the aquatic ecosystem. Jacaré-Pepira River specific mean discharge was higher than the Q5% calculated through the Hydrologic Regionalization Method for São Paulo State, whereas Jaú River mean discharge was lower than Q5%. The minimum discharge recorded for Jacaré-Pepira River was higher than Q7.10 and equal to Q95%, whereas for Jaú River this value was practically equal to Q7,10 and lower than Q95%..