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Abstract: COVID-19 rapidly spread across the world in an unprecedented outbreak with a massive number of infected and fatalities. The pandemic was heavily discussed and searched on the internet, which generated big amounts of data related to it. This led to the possibility of attempting to forecast coronavirus indicators using the internet data. For this study, Google Trends statistics for 124 selected search terms related to pandemic were used in an attempt to find which keywords had the best Spearman correlations with a lag, as well as a forecasting model. It was found that keywords related to coronavirus testing among some others, such as “I have contracted covid”, had high correlations (≥0.7) with few weeks of lag (≤4 weeks). Besides that, the ARIMAX model using those keywords had promising results in predicting the increase or decrease of epidemiological indicators, although it was not able to predict their exact values. Thus, we found that Google Trends data may be useful for predicting outbreaks of coronavirus a few weeks before they happen, and may be used as an auxiliary tool in monitoring and forecasting the disease in Brazil.

https://doi.org/10.1590/1678-4324-2022210648

Evaluation of the Genotoxicity of Endodontic Materials for Deciduous Teeth Using the Comet Assay
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Santos, Nilton Cesar Nogueira dos

; Soares, Bruno Marques

; Pessoa, Cláudia do Ó

; Freitas, Livia Maria Andrade de

; Cruz, João Pedro Pedrosa

; Ramos, Maria Emília Santos Pereira

; Pithon, Matheus Melo

; Cerqueira, Eneida Moraes de Marcílio

Pesquisa Brasileira em Odontopediatria e Clínica Integrada

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2021, Volume 21 elocation e0060

Abstract: En | Text: En | PDF: En

ABSTRACT Objective: To evaluate genotoxicity of zinc oxide, P. A. calcium hydroxide, mineral trioxide aggregate and an iodoform paste using comet assay on human lymphocytes. Material and Methods: Two positive controls were used: methyl-methanesulfonate for the P.A. calcium hydroxide and mineral trioxide aggregate; and doxorubicin for the iodoform paste and zinc oxide. There were also two negative controls: distilled water for the P.A. calcium hydroxide and mineral trioxide aggregate; and DMSO for the iodoform paste and zinc oxide. Comets were identified using fluorescence microscopy and 100 of them were counted on each of the three slides analyzed per drug test. A damage index was established, taking into consideration the score pattern that had previously been determined from the size and intensity of the comet tail. Analysis of variance, followed by Tukey’s test, was used to compare the means of the DNA damage indices. Results: The DNA damage index observed for mineral trioxide aggregate (7.08 to 8.58) and P.A. calcium hydroxide (6.50 to 8.33), which were similar to negative control index. On the other hand, damage index for zinc oxide (104.7 to 218.50) and iodoform paste (115.7 to 210.7) were similar to positive control index. Conclusion: Iodoform paste and zinc oxide showed genotoxicity at all concentrations used.

https://doi.org/10.1590/pboci.2021.062 124 downloads

Gaseous exchanges of corn and weeds under competition and water regimes
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Freitas, Claudia D. M.

; Pamplona, Juliana de P.

; Lins, Hamurábi A.

; Souza, Matheus de F.

; Dombroski, Jeferson L. D.

; Silva, Daniel V.

Revista Brasileira de Engenharia Agrícola e Ambiental

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jul 2020, Volume 24 N. 7 Pages 465 - 473

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO O déficit hídrico pode alterar funções fisiológicas vitais e afetar negativamente o crescimento das plantas. Esses efeitos podem ser intensificados pelas plantas daninhas que competem pela água disponível para as culturas. O objetivo foi avaliar os efeitos da competição e do déficit hídrico temporário do solo sobre a transpiração (E), condutância estomática (gs) e taxa fotossintética (A) do milho, da Urochloa decumbens e da Bidens pilosa L. O delineamento experimental foi em blocos casualizados, com oito repetições. Os tratamentos foram arranjados em esquema fatorial 5 x 2, com o primeiro fator correspondente às espécies milho + U. decumbens, milho + B. pilosa, e milho, U. decumbens e B. pilosa sem competição, e o segundo fator dois regimes hídricos, irrigação diária e restrição hídrica, que correspondeu à suspensão da irrigação desde o início do estágio V3 do milho até o momento em que seus estômatos ficaram totalmente fechados. As espécies B. pilosa e U. decumbens agravaram em diferentes intensidades os efeitos negativos sobre E, gs e A do milho em condição de restrição hídrica. A U. decumbens foi mais agressiva em relação a B. pilosa em competição com o milho, em ambos regimes hídricos. A competição com o milho afetou a E e gs da U. decumbens nos dois regimes hídricos, mas a A foi alterada sob déficit hídrico. Por outro lado, os componentes fisiológicos de B. pilosa não foram afetadas pela competição com o milho, nos dois regimes hídricos.

ABSTRACT Water deficits can alter vital physiological functions and negatively affect plant growth. These effects can be intensified by weeds competing for water available to crops. The objective of this study was to evaluate the effects of competition and temporary soil water deficit on the transpiration (E), stomatal conductance (gs) and photosynthetic rate (A) of corn, Urochloa decumbens, and Bidens pilosa L. The experimental design was in randomized blocks with eight repetitions. The treatments were arranged in a 5 x 2 factorial scheme, with the first factor corresponding to the species: corn + U. decumbens, corn + B. pilosa, and corn, U. decumbens, and B. pilosa without competition. The second factor was two water regimes: daily irrigation and water restriction, which corresponded to the suspension of irrigation from the beginning of the V3 stage of corn until the time when their stomata were completely closed. The species B. pilosa and U. decumbens worsened the negative effects on E, gs, and A of corn at different intensities under water restriction. The U. decumbens was more aggressive in relation to B. pilosa while coexisting with corn in both water regimes. The competition with corn affected the E and gs of U. decumbens in the two water regimes, but the A was altered under water deficit. On the other hand, the physiological components of B. pilosa were not affected by its coexistence with corn in the two water regimes.

https://doi.org/10.1590/1807-1929/agriambi.v24n7p465-473 433 downloads

Acute effects of graduated compression stockings on oxidative stress and muscle damage markers in garbage collectors: a randomized, crossover-controlled trial
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Araujo, Aline M

; Cardoso, Rodrigo K.

; Orcy, Rafael B.

; Stefanello, Francieli M.

; Freitas, Matheus P. de

; Oliveira, Pathise S.

; Soares, Mayara S.

; Spanevello, Roselia M.

; Rombaldi, Airton J.

Revista Brasileira de Cineantropometria & Desempenho Humano

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2020, Volume 22 elocation e70607

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Atividade física intensa pode aumentar o estresse oxidativo e danos musculares, causando fadiga e lesões. As meias de compressão graduada (MCG) podem diminuir esses efeitos deletérios. O objetivo foi determinar os efeitos agudos da MCG no dano muscular e estresse oxidativo (EO) em coletores de lixo. Treze coletores de lixo, 25,4 ± 5,2 anos, participaram usando MCG ou placebo. As amostras de sangue foram coletadas antes e após um dia útil e após 16 horas de descanso. Marcadores de EO e dano muscular foram avaliados. ANOVA de duas vias (duas condições e dois momentos) foi usada para á análise dos resultados. Não foram encontradas diferenças significativas para creatina quinase, catalase e glutationa peroxidase entre o tempo e os grupos. Houve uma diferença significativa para o conteúdo total tiólico e superóxido dismutase apenas no grupo controle (pré e pós, p = 0,004). O uso de MCG exerceu proteção aguda contra o aumento de marcadores de EO, mas não contribuiu para atenuar danos musculares

Abstract Intense physical activity can increase oxidative stress and muscle damage in, causing fatigue and injury. Graduated compression stockings (GCS) can decrease these deleterious effects. The aim was to determine the acute effects of GCS on muscle damage and oxidative stress (OS) in garbage collectors. Thirteen garbage collectors, 25.4±5.2 years, participated using GCS or placebo stockings. Blood samples were collected at pre and post a working day and after 16 hours of rest. Markers of OS and muscle damage were evaluated. Two-way ANOVA (two conditions and two moments) was used for the analysis of the outcomes No significant differences were found for creatine kinase, catalase and glutathione peroxidase between the time and groups. There was a significant difference for the total thiol content and superoxide dismutase only in the control group (pre and post, p = 0.004). The use of GCS exerted acute protection against the increase of markers of OS, but did not contribute to attenuate muscle damage.

https://doi.org/10.1590/1980-0037.2020v22e70607 472 downloads

Essa eu vou postar: Explorando as relações entre narcisismo, uso do Instagram e a moderação da autoestima
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Monteiro, Renan P.

; Monteiro, Tatiana Medeiros Costa

; Maciel, Vitória Crancio

; Masotti, Fábio Nasser de A.

; Freitas, Igor Matheus de Souza

; Candido, Juarid

Psicología, Conocimiento y Sociedad

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2020, Volume 10 N. 2 Pages 38 - 50

Abstract: Es En Pt | Text: Es En Pt | PDF: Es | PDF: En | PDF: Pt

Resumen: El narcisismo involucra características como el exhibicionismo, grandiosidad y necesidad constante de ser admirado. Dichas características apuntan el papel fundamental que este rasgo de personalidad puede tener para explicar el uso del Instagram. Esta red social parece ser un escenario propicio para que los narcisistas puedan autopromoverse y mantener su autoconcepto grandioso y irrealístico, buscando feedback positivo por medio de curtidas, visualizaciones y comentarios. En esta dirección, este estudio tiene por objetivo analizar el rol predictor del narcisismo con relación al uso del Instagram, evaluando el rol moderador de la autoestima. 207 personas usuarias de Instagram participaron del estudio, teniendo en cuenta que narcisistas pasan más tiempo en Instagram, publican más fotos y stories, atribuyendo mucha importancia a recibir feedbacks. Además, se observó que la importancia atribuida a recibir feedbacks fue más elevada entre los narcisistas con baja autoestima, siendo que recibir curtidas y visualizaciones pueden ser una forma de compensación para los bajos niveles en esta variable. Por lo tanto, se observa que el uso del Instagram puede ser explicado por medio del narcisismo, pudiendo haber interacciones con la autoestima, dando importantes claves para entender el uso problemático de esta red social.

Abstract: Narcissism involves characteristics such as exhibitionism, grandiosity and a constant need to be admired. Such characteristics highlight the role that this personality trait may have in the use of Instagram. This social network seems to be a propitious setting for narcissists to self-promote and maintain their grandiose and unrealistic self-concept by seeking positive feedback through number of likes, views, and comments. Thus, the present study aims to analyze the predictive role of narcissism in Instagram use, testing the moderating role of self-esteem. Participants were 207 users of this social network, whereby it was identified that narcissists tend to spend more time on Instagram, post more pictures and stories, giving much importance to receiving feedback (likes and views). Moreover, it was verified that the importance attributed to receiving such feedback was stronger among the narcissists with low self-esteem, such that gathering likes and views can be a way of compensating for low self-esteem. Therefore, it was observed that the use of Instagram can be explained by narcissism, and there may be interactions with self-esteem, which gives important insights to the understanding of the problematic use of this social network.

Resumo: O narcisismo envolve características como exibicionismo, grandiosidade e necessidade constante de ser admirado. Tais características apontam o papel fundamental que este traço de personalidade pode ter para explicar o uso do Instagram. Esta rede social parece ser um cenário propício para que os narcisistas possam se autopromover e manterem seu autoconceito grandioso e irrealístico, buscando feedback positivo por meio de curtidas, visualizações e comentários. Nesta direção, o presente estudo objetiva analisar o papel preditor do narcisismo em relação ao uso do Instagram, testando o papel moderador da autoestima. Participaram 207 usuários desta rede social, sendo identificado que narcisistas tendem a passar mais tempo no Instagram, postam mais fotos e stories, atribuindo muita importância a receber feedback (curtidas e visualizações). Ademais, verificou-se que a importância atribuída a receber feedbacks foi mais forte entre os narcisistas que possuem baixa autoestima, sendo que receber curtidas e visualizações pode ser uma forma de compensação para os baixos níveis nesta variável. Portanto, observa-se que o uso do Instagram pode ser explicado por meio do narcisismo, podendo haver interações com a autoestima, dando importantes insights para se entender o uso problemático desta rede social.

https://doi.org/10.26864/pcs.v10.n2.3

Flora do Espírito Santo: Primulaceae
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Carrijo, Tatiana T.

; Tuler, Amélia C.

; Luber, Jaquelini

; Costa, Rondinelle G. da

; Santos, Matheus C. dos

; Paschoa, Roberta P. da

; Freitas, Maria de Fátima

Rodriguésia

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dec 2017, Volume 68 N. 5 Pages 1829 - 1856

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Este estudo apresenta a flora de Primulaceae no estado do Espírito Santo. O estudo foi baseado em identificações de materiais de herbários e esforço de campo em áreas pobremente coletadas. Primulaceae no Espírito Santo está representada por espécies pertencentes à Ardisia (1 sp.), Clavija (2 spp.), Cybianthus (10 spp.), Jacquinia (1 sp.), Lysimachia L. (1 sp.), Myrsine (14 spp.) e Stylogyne (2 spp.). Ardisia semicrenata, Cybianthus blanchetii, C. oboavatus, Myrsine balansae, M. leuconeura, M. hermogenesii, M. lineata, M. villosissima, Stylogyne lhotzkyana e S. warmingii são novos registros para o estado. Gêneros e espécies foram diferenciados pelo hábito, filotaxia, tipo de inflorescências e morfologia frutos. Cybianthus amplus, Jacquinia armillaris e Myrsine parvifolia ocorrem exclusivamente em vegetação de Restinga. Stylogyne lhotzkyana foi registrada pela primeira vez em vegetação de Restinga, sendo sua distribuição geográfica ampliada para o norte do Espírito Santo. A maior parte das espécies ocorre em florestas ombrófilas e semideciduais da região serrana do estado. No entanto, as matas ciliares, os brejos e os afloramentos rochosos abrigam espécies restritas a estes ambientes, como M. leuconeura, M. rubra e M. villosissima.

Abstract This study presents the flora of Primulaceae in the state of Espírito Santo. The study was based on material identification from herbaria collections and field work in poorly collected areas. Primulaceae in Espírito Santo is represented by species belonging to Ardisia (1 sp.), Clavija (2 spp.), Cybianthus (10 spp.), Jacquinia (1 sp.), Lysimachia L. (1 sp.), Myrsine (14 spp.), and Stylogyne (2 spp.). Ardisia semicrenata, Cybianthus blanchetii, C. oboavatus, Myrsine balansae, M. leuconeura, Myrsine hermogenesii, M. lineata, M. villosissima, Stylogyne lhotskyana, and S. warmingii are new records for the state. Genus and species were differentiated by habit, phyllotaxy, type of inflorescences and fruit morphology. Cybianthus amplus, Jacquinia armillaris, and Myrsine parvifolia are the only species that occur exclusively in Restinga vegetation. Stylogyne lhotzkyana was collected in Restinga vegetation for the first time, and its geographic distribution was expanded to the north of the Espírito Santo. Most species occur in rainforests and semideciduous forests of the mountainous region of the state. However, riparian forests, swamps and rocky outcrops shelter species that were recorded exclusively for these environments, as M. leuconeura, M. rubra, and M. villosissima.

https://doi.org/10.1590/2175-7860201768518 1800 downloads

Potencial de rizobactérias na promoção de crescimento e controle da podridãoradicular em alface hidropônica
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Cipriano, Matheus Aparecido Pereira

; Patrício, Flávia Rodrigues Alves

; Freitas, Sueli dos Santos

Summa Phytopathologica

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mar 2013, Volume 39 N. 1 Pages 51 - 57

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Os objetivos do trabalho foram avaliar se isolados de rizobactérias do grupo fluorescente do gênero Pseudomonas: 1) produzem metabólitos envolvidos na promoção do crescimento (AIA e HCN); 2) têm potencial para controle biológico de Pythium aphanidermatum; 3) podem promover o crescimento de plantas de alface cultivadas em sistema hidropônico; 4) e verificar se há correspondência nas interações in vitro e in vivo desses microrganismos. Com esses objetivos, placas de Petri contendo meio de cultura ágar-água, com ou sem Pythium aphanidermatum, receberam sementes prégerminadas de alface tratadas com os isolados de rizobactérias. Os comprimentos do hipocótilo e da radícula foram medidos cinco ou sete dias após a incubação a 28 ºC. Dois experimentos foram conduzidos em casa de vegetação com plantas de alface hidropônica e 17 isolados bacterianos. As unidades experimentais receberam a suspensão dos isolados de Pseudomonas spp. e, uma semana depois, a suspensão de zoósporos de P. aphanidermatum. Avaliaram-se o escurecimento das raízes e a massa de matéria seca da parte aérea e das raízes das plantas. Os isolados produzem metabólitos que beneficiam o crescimento de alface mesmo na presença do patógeno. Os isolados LP15, LP25, LP28, LP44 e LP47 reduziram os danos causados por P. aphanidermatum nos experimentos realizados in vitro e in vivo. Este é o primeiro estudo que demonstrou que rizobactérias obtidas de solos brasileiros têm potencial para promover o controle biológico de P. aphanidermatum e o crescimento de plantas de alface em sistemas hidropônicos.

The aims of this study were to evaluate whether rhizobacteria with hydroponic lettuce plants and 17 bacterial isolates. The experimental isolates of the fluorescent group of the genus Pseudomonas: 1) units received Pseudomonas spp. isolate suspension and, one week later, produce metabolites involved in growth promotion (AIA and HCN); P. aphanidermatum zoospore suspension. The plants were evaluated for 2) have the potential for the biological control of Pythium root darkening and shoot and root dry matter mass. The isolates produce aphanidermatum; 3) promote the growth of lettuce cultivated in metabolites which benefit the growth of lettuce even in the presence of hydroponic system; 4) show correspondence in the in vitro and in vivo the pathogen. The isolates LP15, LP25, LP28, LP44 and LP47 reduced interactions. Thus, Petri dishes containing agar-water culture medium, the damage caused by P. aphanidermatum in experiments in vitro and in with or without Pythium aphanidermatum, received pre-germinated vivo. This is the first study which demonstrated that rhizobacteria seeds of lettuce treated with the rhizobacteria isolates. The lengths of obtained from Brazilian soils have the potential to promote the the hypocotyl and radicle were measured at five or seven days after biological control of P. aphanidermatum and the growth of lettuce incubation at 28 ºC. Two experiments were carried out in a greenhouse plants in hydroponic systems.

2730 downloads Cited 1 time in SciELO

Chemoface: a novel free user-friendly interface for chemometrics
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Nunes, Cleiton A.

; Freitas, Matheus P.

; Pinheiro, Ana Carla M.

; Bastos, Sabrina C.

Journal of the Brazilian Chemical Society

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nov 2012, Volume 23 N. 11 Pages 2003 - 2010

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Um software para análise multivariada foi desenvolvido com o objetivo de oferecer uma ferramenta computacional livre com interface gráfica amigável para pesquisadores, professores e estudantes com interesse em quimiometria. O Chemoface possui módulos capazes de resolver problemas relacionados com planejamento experimental, reconhecimento de padrões, classificação e calibração multivariada. É possível obter uma variedade de gráficos e tabelas para explorar os resultados. Neste trabalho, as principais funcionalidades do Chemoface são exploradas usando estudos de caso reportados na literatura, tais como otimização de adsorção de corante índigo em quitosana usando planejamento fatorial completo, análise exploratória de amostras de própolis caracterizadas por ESI-MS (espectrometria de massas com ionização electrospray) usando PCA (análise de componentes principais) e HCA (análise hierárquica de agrupamentos), modelagem MIA-QSAR (análise multivariada de imagem aplicada à relações quantitativas estrutura-atividade) para predição de parâmetro cinético relacionado à atividade de peptídeos contra dengue usando PLS (método de quadrados mínimos parciais), e classificação de amostras de vinho de diferentes variedades usando PLS-DA (PLS para análise discriminante). Todos os exemplos são ilustrados com gráficos e tabelas obtidos no Chemoface.

A software for multivariate analysis was developed in order to provide a free computational tool with user-friendly graphical interface for researchers, professors and students with interest in chemometrics. Chemoface comprises modules that can solve problems related to experimental design, pattern recognition, classification and multivariate calibration. It allows obtaining a variety of high quality graphics and tables to explore results. In this work, the main features of Chemoface are explored using case studies reported in the literature, such as optimization of adsorption of indigo dye on chitosan using full factorial design, exploratory analysis of propolis samples characterized by ESI-MS (electrospray ionization-mass spectrometry) using PCA (principal component analysis) and HCA (hierarchical cluster analysis), MIA-QSAR (multivariate image analysis applied to quantitative structure activity relationship) modeling for the prediction of kinetic parameter related to activities of peptides against dengue using PLS (partial least squares), and classification of wine samples from different varieties using PLS-DA (PLS discriminant analysis). All examples are illustrated with graphs and tables obtained by means of Chemoface.

7038 downloads

Desenhos de estruturas químicas correlacionam-se com propriedades biológicas: MIA-QSAR
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Cormanich, Rodrigo A.

; Nunes, Cleiton A.

; Freitas, Matheus P.

Química Nova

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2012, Volume 35 N. 6 Pages 1157 - 1163

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Descriptors in multivariate image analysis applied to quantitative structure-activity relationship (MIA-QSAR) are pixels of bidimensional images of chemical structures (drawings), which were used to model the trichomonicidal activities of a series of benzimidazole derivatives. The MIA-QSAR model showed good predictive ability, with r², q² and r val. ext.² of 0.853, 0.519 and 0.778, respectively, which are comparable to the best values obtained by CoMFA e CoMSIA for the same series. A MIA-based analysis was also performed by using images of alphabetic letters with the corresponding numeric ordering as dependent variables, but no correlation was found, supporting that MIA-QSAR is not arbitrary.

3348 downloads

10.

2D chemical drawings correlate to bioactivities: MIA-QSAR modelling of antimalarial activities of 2,5-diaminobenzophenone derivatives
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Cormanich, Rodrigo A.

; Freitas, Matheus P.

; Rittner, Roberto

Journal of the Brazilian Chemical Society

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2011, Volume 22 N. 4 Pages 637 - 642

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Estruturas químicas bidimensionais de uma série de derivados da 2,5-diaminobenzofenona, alguns inibidores de farnesiltransferase, correlacionam-se com as respectivas atividades antimaláricas. Os descritores nessa análise QSAR são pixels das estruturas químicas (imagens bidimensionais) transformados em binários e, portanto, a variação dos dados que explica a variância no bloco das bioatividades corresponde às coordenadas de cada pixel do desenho das moléculas. Este método, chamado análise multivariada de imagens aplicada ao estudo da relação quantitativa entre estrutura e atividade (MIA-QSAR), foi aplicado para modelar as atividades antimaláricas dos compostos acima e os resultados foram comparados com técnicas de QSAR 3D bastante conhecidas. Além da simplicidade e alto poder de predição do modelo MIA-QSAR, este método baseado em imagens 2D tem potencial para funcionar bem quando análises clássicas igualmente simples falham. Enfim, a presente análise QSAR baseada em desenhos de estruturas químicas bidimensionais dispensa uma varredura conformacional e alinhamento tridimensional das moléculas para fornecer um modelo QSAR robusto; a descrição físico-química de efeitos estéricos e centros estereogênicos, por exemplo, está toda incorporada na maneira com que substituintes são representados, e o método serve como uma ferramenta para aqueles que interessem em trabalhar com modelagem de fármacos.

Two-dimensional chemical structures of a series of 2,5-diaminobenzophenone derivatives, some farnesyltransferase inhibitors, have shown to correlate with the corresponding antimalarial activities. The descriptors in this QSAR analysis are pixels of the chemical structures (two dimensional images) transformed into binaries and, therefore, the data variance explaining the variance in the activities block corresponds to the coordinates of each pixel in each molecule. This method, named multivariate image analysis applied to quantitative structure-activity relationship (MIA-QSAR), was applied to model the antimalarial activities of the titled compounds and the results were compared to well known three-dimensional QSAR techniques for the same class of compounds. In addition to the simplicity and high predictive performance of the MIA-QSAR modelling, this 2D image-based method has the potential of working well when equally simple, classical analysis fails. Overall, the present QSAR analysis based on 2D chemical drawings (constrained structures) dispensed conformational screening and 3D alignment to provide a reliable QSAR model; the physicochemical description about e.g. steric effects and chiral centers is all contained in the way in which substituents in a congeneric series are drawn, and the method can serve as a tool to introduce those who are planning to deal with drug design.

2035 downloads

11.

Em busca da conservação ambiental: a contribuição da percepção ambiental para a formação e atuação dos profissionais da Química
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Freitas, Mirlaine R.

; Macedo, Renato L. G.

; Ferreira, Eric B.

; Freitas, Matheus P.

Química Nova

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2010, Volume 33 N. 4 Pages 988 - 993

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Planet transformations caused by human intervention in the last 200 years are largely due to chemical impact. Therefore, this study aimed to identify and analyze the environmental perception of undergraduate students and lecturers in the Chemistry course of the Federal University of Lavras, accounting for the topics "Environmental Definition" and "Relationship between Chemistry and Environment". Two thematic axes for discussion were proposed using theories of Social Representation and Environmental Complexity, with the aim of stimulating the conservationist reasoning and actions. Such axes were proposed to give support to the education of chemists at the undergraduate level.

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