Jornalismo do G1/Acre: um estudo sobre imaginário e representações na amazônia acrea

The present study is linked to the research project “Imaginário na Amazônia: um estudo sobre as representações produzidas pelo jornalismo do G1/Acre”, registered at the Fundação de Amparo à Pesquisa do Acre (FAPAC). The article proposes a debate on the representations and imaginary of the Brazilian Amazon, emphasizing the South-Western region, where Acre is located. It is known that since the arrival of the first Europeans, the region is observed by the dichotomy hell/tropical paradise and its population is identified as exotic, picturesque and primitive. Therefore, the research proposal is to analyze if the journalistic narratives help to maintain the preconceptions or if they are created new possibilities of interpretation on the Acre. In order to propose the reflection, six news articles published in G1/Acre on aspects of the Amazon region of Acre will be studied. The study includes materials published between 2014 and 2016. Roger Chartier is used to study representations, authors such as Miquel Alsina to discuss communication issues and Francisco Foot Hardman, Ana Pizarro, Durval Muniz de Albuquerque Junior, among others, that discuss issues related to the Amazon region.O presente estudo está vinculado ao projeto de pesquisa “Imaginário na Amazônia: um estudo sobre as representações produzidas pelo jornalismo do G1/Acre”, cadastrado na Fundação de Amparo à Pesquisa do Acre (FAPAC). O artigo propõe um debate sobre as representações e o imaginário da Amazônia brasileira, enfatizando a região Sul-Ocidental, onde está localizado o Acre. Sabe-se que desde a chegada dos primeiros europeus, a região é observada pela dicotomia inferno/paraíso tropical e sua população é identificada como exótica, pitoresca e primitiva. Diante disso, a proposta de pesquisa é analisar se as narrativas jornalísticas ajudam na manutenção dos pré-conceitos ou se são criadas novas possibilidades de interpretação sobre o Acre. Para propor a reflexão, serão estudados seis textos noticiosos publicados no G1/Acre sobre aspectos da região amazônica acreana. O período de estudo compreende matérias publicadas entre os anos de 2014 a 2016. Faz-se uso de Roger Chartier para estudar representações, autores como Miquel Alsina para discutir as questões da comunicação e Francisco Foot Hardman, Ana Pizarro, Durval Muniz de Albuquerque Junior, entre outros, que discorrem sobre questões relacionadas à região amazônica.Este estudio está vinculado al proyecto de investigación “Imaginário na Amazônia: um estudo sobre as representações produzidas pelo jornalismo do G1/Acre”, registrada en la Fundação de Amparo à Pesquisa do Acre (FAPAC). El artículo propone un debate sobre las representaciones y el imaginario de la Amazonía brasileña, con énfasis en la región Sur-Oeste, donde se encuentra el Acre. Se sabe que desde la llegada de los primeros europeos, la región se observa por dicotomía Infierno/paraíso tropical y su población se identifica como exótico, pintoresco y primitivo. Por lo tanto, la investigación propuesta es analizar si las narrativas periodísticas ayudan en el mantenimiento de las ideas preconcebidas o están creando nuevas posibilidades de interpretación del Acre. Proponer la reflexión, se estudiarán seis noticias publicadas en G1/Acre en los aspectos de la región amazónica de Acre. El período de estudio abarca los artículos publicados entre los años de 2014 a 2016. Se hace uso de Roger Chartier para estudiar las representaciones, autores como Miquel Alsina para discutir temas de comunicación y Francisco Foot Hardman, Ana Pizarro, Durval Muniz de Albuquerque Junior, entre otros, que tratan temas relacionados con la región amazónic

Desenvolvimento de um jogo sério para o ensino de anatomia do membro inferior do esqueleto humano

TCC(Tecnologias da Informação e Comunicação)Com a tendência crescente no desenvolvimento de novas tecnologias educacionais, em particular no campo da saúde, como dar suporte em diagnósticos, visualização de informação de dados ou mesmo em ambientes virtuais que auxiliam na cirurgia, é possível encontrar grandes oportunidades de inovação na construção de técnicas eficientes de ensino e aprendizagem das ciências da saúde. O aumento exponencial nos cursos de graduação e pós-graduação em ciências da saúde requer materiais avançados para estudos na área. O uso de livros ou modelos anatômicos nem sempre são capazes de fornecer um realismo que são abordados por novos recursos tecnológicos. Neste contexto surge a necessidade de ferramentas que podem auxiliar no ensino e aprendizagem, a fim de qualificar os profissionais de saúde para o futuro. Assim, este trabalho tem como objetivo apresentar um jogo sério para estudar a anatomia humana aplicando o uso de Tecnologias de Informação e Comunicação (TIC). Para isso, foi desenvolvido um jogo sério composto por um ambiente de aprendizagem e interação usando a plataforma de desenvolvimento de jogos conhecida como Unity 3D. O jogo sério intitulado EducaAnatomia3D apresenta um ambiente de interação dividido em duas partes principais: a apresentação do conteúdo para o estudo da anatomia humana, com foco nos acidentes ósseos do membro inferior do esqueleto humano, e a fixação do conteúdo. Todas as fases de desenvolvimento do jogo sério contaram com a participação de especialistas em Anatomia Humana. A metodologia utilizada consiste em estudos bibliográficos e exploratórios. Na avaliação de usabilidade do EducaAnatomia3D foi realizado um estudo de caso com alunos da disciplina de Anatomia II do curso de Fisioterapia da Universidade Federal de Santa Catarina (UFSC) – Centro Araranguá. Para tal foi elaborado um questionário de satisfação, contendo 15 perguntas relacionadas a 5 fatores de usabilidade, e solicitado ao final do estudo de caso o preenchimento do questionário por parte dos alunos (n=23) e do professor. Com base nas respostas obtidas pode-se concluir que o jogo sério apresentou resultados satisfatórios como uma ferramenta para auxiliar no processo de aprendizagem de estudos de Anatomia. Além disso, algumas sugestões de melhoria foram propostas pelos alunos, as quais serão levadas em consideração em futuros projetos nesta área.With the growing trend in the development of new educational technology tools, particularly in the health field, such as providing support in diagnostics, visualization of data or even in virtual environments that aid in surgery, it is possible to find great opportunities for innovation in the construction of techniques for teaching and learning in the health sciences. The exponential increase in undergraduate and graduate courses in health sciences requires advanced materials for studies in the field. The use of books or anatomical models are not always able to provide a realism that are addressed by new technological resources. In this context, there is a need for tools that can aid in teaching and learning, in order to qualify health professionals for the future. Thus, the aim of this work was to present a serious game to study the human anatomy applying the use of Information and Communication Technologies (ICT). For that, a serious game was developed, composed of a learning and interaction environment using the game development platform known as Unity 3D. The serious game entitled EducaAnatomy3D presents an environment of interaction divided into two main parts: the presentation of the content for the study of human anatomy, focusing on the bone protrusions of the lower limb of the human skeleton, and the assimilation of the content. All stages of development of the serious game counted on the participation of specialists in Human Anatomy. The methodology used consists of bibliographic and exploratory studies. As a result, a satisfaction questionnaire was applied with the students of the discipline of Anatomy II of the Physiotherapy course at the Universidade Federal de Santa Catarina (UFSC). For this purpose, a satisfaction questionnaire was developed, containing 15 questions related to 5 usability factors, and asked at the end of the case study to complete the questionnaire by the students (n = 23) and the professor. Based on the answers obtained it can be concluded that the serious game presented satisfactory results as a tool to aid in the learning process of Human Anatomy studies. In addition, some suggestions for improvement have been proposed by the students which will be taken into account in future projects in this area

Photosynthesis and production of West Indian cherry irrigated with saline waters under nitrogen/potassium fertilization

Fertilization management is a technique that has been studied for the mitigation of salt stress in plants. In this perspective, this work aimed to evaluate the effects of combinations of potassium and nitrogen fertilization on the photosynthetic pigments, photosynthetic efficiency, and production of the West Indian cherry irrigated with waters of different salinities, between 420 and 550 days after transplanting. The experiment was conducted in an open field at the Center of Sciences and Agrifood Technology of the Federal University of Campina Grande, using 60 L lysimeters, in a randomized block design with a 5 x 4 factorial scheme, corresponding to five salinity levels of the irrigation water – ECw (0.3; 1.3; 2.3; 3.3, and 4.3 dS m-1) and four combinations of nitrogen and potassium fertilization (C1 = 70% N + 50% K2O; C2 = 100% N + 75% K2O; C3 = 130% N + 100% K2O, and C4 = 160% N + 125% K2O) of the dose recommended for the West Indian cherry, with three replications and one plant per plot. The cv. Flor Branca was studied through its grafting on a rootstock of the cv. Junco. The irrigation with ECw above 0.3 dS m-1 reduced the contents of chlorophyll a and b in the leaves, the photochemical efficiency, CO2 assimilation rate, instantaneous carboxylation efficiency, instantaneous water-use efficiency, and the number of fruits per plant. The combined fertilization with 70% of N + 50% of K2O increased the photosynthetic pigments, photosynthesis, and the number of fruits per plant, as well as mitigated the deleterious effects of water salinity on the production per plant up to the ECw of 2.3 dS m-1, which revealed to be the most adequate combination for West Indian cherry fertilization.Fertilization management is a technique that has been studied for the mitigation of salt stress in plants. In this perspective, this work aimed to evaluate the effects of combinations of potassium and nitrogen fertilization on the photosynthetic pigments, photosynthetic efficiency, and production of the West Indian cherry irrigated with waters of different salinities, between 420 and 550 days after transplanting. The experiment was conducted in an open field at the Center of Sciences and Agrifood Technology of the Federal University of Campina Grande, using 60 L lysimeters, in a randomized block design with a 5 x 4 factorial scheme, corresponding to five salinity levels of the irrigation water – ECw (0.3; 1.3; 2.3; 3.3, and 4.3 dS m-1) and four combinations of nitrogen and potassium fertilization (C1 = 70% N + 50% K2O; C2 = 100% N + 75% K2O; C3 = 130% N + 100% K2O, and C4 = 160% N + 125% K2O) of the dose recommended for the West Indian cherry, with three replications and one plant per plot. The cv. Flor Branca was studied through its grafting on a rootstock of the cv. Junco. The irrigation with ECw above 0.3 dS m-1 reduced the contents of chlorophyll a and b in the leaves, the photochemical efficiency, CO2 assimilation rate, instantaneous carboxylation efficiency, instantaneous water-use efficiency, and the number of fruits per plant. The combined fertilization with 70% of N + 50% of K2O increased the photosynthetic pigments, photosynthesis, and the number of fruits per plant, as well as mitigated the deleterious effects of water salinity on the production per plant up to the ECw of 2.3 dS m-1, which revealed to be the most adequate combination for West Indian cherry fertilization

Qualidade de vida e eventos adversos de pacientes com epilepsia farmacorresistente em uso de lamotrigina

Study design: Cross-sectional study. Introduction: Pharmacological treatment is the first option to treat epilepsy, and about 40% of patients require polytherapy to better control epileptic seizures, which may be associated with an increase in adverse events and impairment of quality of life. Objective: To evaluate the quality of life of patients with pharmacoresistant epilepsy using lamotrigine (LTG), as well as to verify the association of adverse events with antiepileptic drugs with quality of life. Methods: This cross-sectional study was carried out with 75 patients with drugresistant epilepsy using LTG, in a Clinic of Epilepsy of Difficult Control of Ribeirão Preto-SP, from May/2011 to April / 2012. The clinical variables analyzed were Quality of Life in Epilepsy (QOLIE31) and the Adverse Events Profile Questionnaire (AEP). Socio-demographic and pharmacotherapeutic data were collected through patient records. This study was approved by the Research Ethics Committee of the General Hospital of the Medical School of Ribeirão Preto of the University of São Paulo (HCFMRP-USP), whose case number is 8791/2010. Results: The most frequent adverse events were somnolence and difficulty concentrating. In addition, low scores were observed in all domains related to quality of life (Qolie-31). Conclusion: Quality of life has an inverse association with adverse events in patients using antiepileptic drugs (p <0.01).Modelo do estudo: Estudo transversal. Introdução: O tratamento farmacológico é a primeira opção para o tratamento da epilepsia, e cerca de 40% dos pacientes necessitam de politerapia para melhor controle das crises epilépticas, o que pode estar associado ao aumento de eventos adversos e comprometimento da qualidade de vida. Objetivos: Avaliar a qualidade de vida de pacientes com epilepsia farmacoresistente em uso de lamotrigina (LTG), bem como verificar a associação dos eventos adversos dos antiepilépticos com a qualidade de vida. Metodologia: Este estudo transversal foi realizado com 75 pacientes com epilepsia farmacorresistente em uso LTG atendidos em um Ambulatório de Epilepsia de Difícil Controle de Ribeirão Preto-SP, no período de maio/2011 a abril/2012. As variáveis clínicas analisadas foram a qualidade de vida (Quality of Life in Epilepsy - Qolie-31) e o perfil de eventos adversos (AEP – Adverse Events Profile Questionnaire). Dados sociodemográficos e farmacoterapêuticos foram coletados através dos prontuários dos pacientes. Este trabalho foi aprovado pelo Comitê de Ética em Pesquisa do Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (HCFMRP-USP), cujo número do processo é 8791/2010. Resultados: Os eventos adversos mais frequentes foram sonolência e dificuldade de concentração. Além disso, observou-se baixos escores em todos os domínios relacionados à qualidade de vida (Qolie-31). Conclusão: A qualidade de vida possui associação inversamente significativa com os eventos adversos, nos pacientes em uso de antiepilépticos (p<0,01)

Centro de Ciências de Araraquara: 25 anos de extensão universitária e 15 anos de relação museu-escola

In December 2014 the Araraquara Science Centre (CCA) completed 25 years of existence and this paper presents a comprehensive survey of the history of this educational institution, the chronological phases it went through during this period and its importance to education in the city of Araraquara and region. On December 28 1989, an agreement between SCTDE and Unesp created the CCA, with the main purpose of stimulating the use of experimentation in the teaching of science in elementary and high schools. Unfortunately, the financial support of SCTDE lasted only two years, and in 1992 the CCA had to be installed in a space yielded by the school ETEC Professora Anna de Oliveira Ferraz, where it stayed until 1998. The main activities in these two phases were the material loans, such as VHS tapes, books and kits of experiments, the so called Experimentoteca, donated to CCA by the CDCC of USP in São Carlos. In 1998 the CCA, finally got a more adequated space, a building once occupated by the former EEPG "Prof.. Eunice Peixoto Sampaio Araújo, an extinct elementary public school. In a much more adequated space, begins his 3rd stage of CCA, now as a Science Museum. It was in this phase, that comprises the last 15 years, that the Araraquara Science Center established itself as a science communication space, which through nonformal education, contributed in order that the teaching of science for elementary and high school students was made in a playful, pleasant and experimental way. It is also at this stage that the CCA acts as an important space contribuiting to its initial formation of undergratuaded students, future professors acting in elementary and high schools.Em dezembro de 2014, o Centro de Ciências de Araraquara (CCA) completou 25 anos de existência e o presente trabalho apresenta um levantamento completo da história desta instituição de ensino, as fases que atravessou nesse período e sua importância para o ensino na cidade de Araraquara e região. Em 28 de dezembro de 1989, um convênio entre SCTDE e Unesp criou o CCA, com o intuito de estimular o uso da experimentação no ensino de Ciências nos ensinos Fundamental e Médio. Infelizmente, o aporte financeiro da SCTDE foi por apenas dois anos e em 1992 o CCA teve que ser instalado em um galpão cedido pela escola ETEC Professora Anna de Oliveira Ferraz, onde funcionou até 1998. As principais atividades nessas duas fases foram os empréstimos de materiais, como fitas VHS, livros e kits de experimentos, da Experimentoteca, cedidos pelo CDCC da USP de São Carlos. No ano de 1998, o CCA finalmente conseguiu a cessão da extinta EEPG Profª. Eunice Sampaio Peixoto Araújo. Agora, com um espaço físico muito mais adequado, iniciou sua 3ª fase, como um Museu de Ciências. É nesta fase, ou nos últimos 15 anos, que o Centro de Ciências de Araraquara firmou-se como um espaço de divulgação científica que, através da educação não formal, contribui para que o ensino de ciências chegue para os alunos do ensino fundamental e médio de maneira lúdica, agradável e experimental. É nesta fase também que o CCA destaca-se como um importante espaço de Formação Inicial de alunos de graduação, futuros professores das escolas de Ensino Fundamental e Médio.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Equations used to predict maximum heart rate in the non-athletic pediatric population: a systematic review

AIMS: To evaluate the applicability of the predictive equations of maximum heart rate during exercise tests in non-athlete children and adolescents.METHODS: It is a systematic review, carried out through Pubmed, Lilacs, Scielo and PEDro. We included studies comparing the maximum heart rate measured and estimated by predictive equations during stress tests in non-athlete children and adolescents. The following search strategy was used: Exercise test OR Exercise testing OR Cardiopulmonary exercise test OR Cardiopulmonary exercise testing OR Peak oxygen uptake OR Maximal oxygen consumption OR Exercise tolerance OR Exercise capacity AND Heart rate OR Heart rates OR Pulse rate OR Pulse rates OR Heart rate control OR Cardiac chronotropic OR Predictive value test AND Predictive equations. The methodological quality was assessed by the Agency for Health Care Research and Quality scale.RESULTS: Of a total of 858 articles located, only four were included. The articles totaled 325 participants (seven to 18 years). All studies measured the maximum heart rate by cardiopulmonary stress test. While no study recommended (04/04=100%; 01/01=100%) the formulas “220 - age” and “207 - 0.7 x age”, the equations “208 - (0.7 x age)” and “200 - 0.48 x age” were adequate in 02/03 (66.6%) articles and 01/01 (100%) document, respectively. The methodological quality was considered high in all articles evaluated, ranging from 76 to 97 points.CONCLUSIONS: The findings seem to suggest that the formula “208 - (0.7 x age)” was the most tested and adequate equation to a large extent for estimating maximum heart rate in non-athlete children and adolescents. However, further studies are still needed to confirm these results.OBJETIVOS: Revisar a aplicabilidade das equações preditivas de frequência cardíaca máxima durante os testes de exercício em crianças e adolescentes não atletas.MÉTODOS: Trata-se de uma revisão sistemática, realizada no Pubmed, Lilacs, Scielo e PEDro. Foram incluídos estudos que compararam a frequência cardíaca máxima medida e a estimada por equações preditivas durante testes de esforço em crianças e adolescentes não atletas. Utilizou-se a seguinte estratégia de pesquisa: Exercise test OR Exercise testing OR Cardiopulmonary exercise test OR Cardiopulmonary exercise testing OR Peak oxygen uptake OR Maximal oxygen consumption OR Exercise tolerance OR Exercise capacity AND Heart rate OR Heart rates OR Pulse rate OR Pulse rates OR Heart rate control OR Cardiac chronotropic OR Predictive value test AND Predictive equations. A qualidade metodológica foi avaliada pela escala da Agency for Health Care Research and Quality.RESULTADOS: De um total de 858 artigos localizados, apenas quatro foram incluídos. Os artigos totalizaram 325 participantes (sete a 18 anos). Todos os estudos mensuraram a frequência cardíaca máxima por meio do teste de esforço cardiopulmonar. Enquanto nenhum estudo (04/04=100%; 01/01=100%) recomendou as fórmulas “220 - idade” e a “207 – 0,7 x idade”, as equações “208 – (0,7 x idade)” e a “200 – 0,48 x idade” foram adequadas em 02/03 (66,6%) artigos e 01/01 (100%) documentos, respectivamente. A qualidade metodológica foi considerada alta em todos os artigos avaliados, oscilando entre 76 e 97 pontos.CONCLUSÕES: Os achados parecem sugerir que a fórmula “208 – (0,7 x idade)” foi a equação mais testada e adequada em grande parte para estimar os valores de frequência cardíaca máxima em crianças e adolescentes não atletas. No entanto, ainda são necessários mais estudos para confirmar esses resultados

Indução de tolerância com ácido salicílico em maracujazeiro-azedo irrigado com águas de diferentes composições catiônicas

This study aimed to evaluate the physiological indices, growth, and seedling quality of the sour passion fruit cv. BRS SC1 as a function of irrigation with water of different cationic natures and exogenous application of salicylic acid. The experiment was conducted under plant nursery conditions at the CCTA/UFCG, Campus Pombal-PB, using a randomized block design set up in a 6 × 4 factorial arrangement referring to six cationic compositions of irrigation water (S1 – control, S2 - Na+, S3 - Ca2+, S4 - Na+ + Ca2+, S5 - Mg2+, and S6 - Na+ + Ca2+ + Mg2+) and four concentrations of salicylic acid - SA (0, 1.0, 2.0, and 3.0 mM), with three replications and two plants per plot. In the control treatment (S1), the plants were irrigated with the electrical conductivity level of 0.3 dS m-1, whereas the other treatments (S2, S3, S4, S5, and S6) used water with 4.0 dS m-1 obtained based on different cations, all in the form of chloride. The exogenous application of salicylic acid increased the content of chlorophyll b in the sour passion fruit seedlings. Salt stress negatively affected seedling growth. Seedling quality was affected by the electrical conductivity of irrigation water regardless of the cationic nature. Although showing reductions, the seedlings produced under high salinity showed a satisfactory Dickson quality index. The genotype cv. BRS SC1 is considered tolerant to salinity when irrigated with water salinized by Na+, Ca2+, Na+ + Ca2+, and Na+ + Ca2+ + Mg2+, and moderately tolerant when irrigated with water salinized by Mg2+.Objetivou-se avaliar os índices fisiológicos, o crescimento, e a qualidade de mudas de maracujazeiro-azedo ‘BRS SC1’ em função da irrigação com águas de diferentes naturezas catiônicas e aplicação exógena de ácido salicílico. O experimento foi conduzido sob condições de casa de vegetação, pertencente ao CCTA/UFCG, Campus de Pombal-PB, utilizando-se o delineamento de blocos casualizados com arranjo fatorial 6 × 4, sendo seis composições catiônicas da água de irrigação (S1 - Testemunha; S2 - Na+; S3 - Ca2+; S4 - Na+ + Ca2+; S5 - Mg2+ e S6 - Na+ + Ca2+ + Mg2+), e quatro concentrações de ácido salicílico - AS (0; 1,0; 2,0 e 3,0 mM) com três repetições e duas plantas por parcela. Na testemunha (S1), as plantas foram irrigadas com água de condutividade elétrica de 0,3 dS m-1 enquanto se utilizou, nos demais tratamentos (S2; S3; S4; S5 e S6) água com 4,0 dS m-1, obtida a partir de diferentes cátions, todos em forma de cloreto. A aplicação exógena de ácido salicílico aumentou o teor de clorofila b nas mudas de maracujazeiro-azedo. O estresse salino afetou negativamente o crescimento das plantas de maracujazeiro. A qualidade das mudas foi afetada pela condutividade elétrica da água, independente da natureza catiônica. Apesar de causar redução, as mudas produzidas sob elevado nível salino apresentou índice satisfatórios. O genótipo ’BRS SC1’ é considerado tolerante à salinidade quando irrigado com água salinizada por Na+; Ca2+; Na+ + Ca2+; Na+ + Ca2+ + Mg2+, e moderadamente tolerante quando irrigado com água salinizada por Mg2+

Salicylic Acid Modulates Okra Tolerance to Salt Stress in Hydroponic System

Salinity is one of the most devastating abiotic stresses that limit plant growth and yield, especially in arid and semi-arid regions. The objective of this study was to evaluate the effect of foliar application of salicylic acid in mitigating the effects of salt stress on okra cultivation in a hydroponic system. The study was conducted in a greenhouse, consisting of two experiments. A completely randomized design was adopted in a split-plot scheme, with four levels of electrical conductivity of the nutrient solution—EC (2.1; 3.6; 5.1, and 6.6 dS m−1) considered the plots and four salicylic acid concentrations—SA (0, 1.2; 2.4, and 3.6 mM), the subplots, with four replications. The second experiment differed from the first only by the increase in the EC levels (3.0, 5.0, 7.0, and 9.0 dS m−1). An increase in the electrical conductivity of the nutrient solution negatively affected the physiology and production components of okra. However, foliar application of salicylic acid at concentrations between 1.2 and 2.3 mM reduced the harmful effects of salt stress. The salinity threshold for hydroponic cultivation of okra was 2.54 dS m−1, with a reduction of 7.98% per unit increment in EC above this level

Foliar Application of Salicylic Acid Mitigates Saline Stress on Physiology, Production, and Post-Harvest Quality of Hydroponic Japanese Cucumber

Salicylic acid (SA) is a phenolic compound capable of inducing physiological and metabolic changes that enhance the tolerance of plants to saline stress associated with using a hydroponic system and enable the use of saline water in semi-arid regions. In this context, this assay aimed to evaluate the impact of the foliar application of SA on mitigating salt stress effects on Japanese cucumber cultivated in a hydroponic system. The experiment was carried out in a protected ambient (greenhouse), using the Nutrient Film Technique—NFT hydroponic system. A completely randomized design was performed in a 4 × 4 split-plot scheme, with four levels of electrical conductivity of the nutrient solution—ECns (2.1, 3.6, 5.1, and 6.6 dS m−1)—considered as plots and four SA concentrations (0, 1.8, 3.6, and 5.4 mM), regarded as subplots, with four replicates and two plants per plot. An increase in the ECns negatively affected the physiology, production components, and post-harvest quality of cucumber. However, the application of SA to leaves at concentrations between 1.4 and 2.0 mM reduced the deleterious effects of saline stress and promoted an increase in the production of and improvement in the post-harvest quality of cucumber fruits

Hydroponic Cultivation of Laranja Cherry Tomatoes under Salt Stress and Foliar Application of Hydrogen Peroxide

The objective of this study was to evaluate the effect of the foliar application of hydrogen peroxide (H2O2) in mitigating the effects of salt stress on cherry tomato cultivation in a hydroponic system. The experiment was conducted in a greenhouse, using a Nutrient Film Technique hydroponic system. The experimental design used was completely randomized in a split-plot scheme, with four levels of electrical conductivity of the nutrient solution—ECns (2.1, 2.8, 3.5, and 4.2 dS m−1), considered as plots, and five H2O2 concentrations (0, 12, 24, 36, and 48 µM), regarded as subplots, with four replicates and two plants per plot. An increase in the electrical conductivity of the nutrient solution negatively affected the production components of cherry tomatoes. However, it did not affect the post-harvest quality of the fruits. Despite the reductions observed in the production components due to the increase in the electrical conductivity of the nutrient solution, foliar application of H2O2 at concentrations esteemed between 22 and 25 µM attenuated the deleterious effects of salt stress on the number of fruits and ascorbic acid content and increased the total fruit production per plant of cherry tomatoes