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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

Previous Preservation of Veneers Promotes Higher Preservative Retention and More Effective Protection in CCA-Preserved Plywood
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Athanázio-Heliodoro, Julia Carolina

; Silva, Gisleine Aparecida da

; Palma, Hernando Alfonso Lara

; D’Elaqua-Santos, Gabriel Francisco

; Ballarin, Adriano Wagner

Floresta e Ambiente

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2022, Volume 29 N. 2 elocation e20220010

Abstract: En | Text: En | PDF: En

Abstract Plywood panel has a promising market in Wood Frame Construction System. Like any wood-based product, it can suffer deterioration, and preservative treatment is imperative. The preservative treatment can be done directly on a pressed panel - a conventional method that supposedly causes a decrease in physical-mechanical performance - or incorporated into the production process, by the previous treatment of veneers to develop panels with durability and quality. We compared the performance of these two processes. Panels were produced with Pinus taeda L., using 360 g m-2 of phenolic adhesive in a double line, a pre-pressing and hot pressing for 20 minutes under 1.2 MPa pressure and 130°C and treatement on veneers and panels with CCA-C. Tests followed Brazilian standards. Panels with previous treatment had lower water absorption and swelling. Preservation of the veneers also promoted higher retention levels and better penetration of preservatives. Both treatments did not affect the mechanical performance.

https://doi.org/10.1590/2179-8087-floram-2022-0010

Perfil da mortalidade neonatal no Rio Grande do Norte (2008 - 2017)
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Monteiro de Araújo, Lucyana Augusta

; Newton Machado Bezerra, Isaac

; Santos Lima, Jônia Cybele

; do Nascimento, Jânio Luiz

; Sousa de Farias, Laísla Ludmyla

; Dantas de Assis, Luan Thallyson

; Rodrigues Cardoso, Géssica

; de Paiva Lins, Deborah Jennifer

; Holanda Lima, Mariel Wágner

Avances en Enfermería

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dec 2020, Volume 38 N. 3 Pages 307 - 315

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

Resumen Objetivo: Caracterizar la mortalidad neonatal temprana y tardía en el estado de Rio Grande do Norte (Brasil) en el periodo 2008-2017. Metodología: Estudio epidemiológico descriptivo temporal de enfoque cuantitativo retrospectivo, con datos del Departamento de Informática do Sistema Único de Saúde (DATASUS) sobre muertes neonatales ocurridas entre enero de 2008 y diciembre de 2017 en el estado de Rio Grande do Norte por lugar de residencia. Resultados: La muestra consideró un total de 4.531 muertes, siendo las más frecuentes: muerte neonatal temprana (79,65 %), sexo masculino (54,71 %), embarazo de menos de 27 semanas (34,05 %), parto vaginal (49,93 %), recién nacidos con menos de 2,500 g de peso (68,57 %) y madres con 8 a 11 años de escolaridad. Entre 2008, el año inicial de recolección, y 2017, el año final, la mortalidad neonatal disminuyó en 23,83 %. La mortalidad masculina fue mayor que la femenina en todos los años, oscilando entre 0,09 y 0,08, respectivamente. La prueba de independencia de chi-cuadrado mostró una asociación entre el tipo de parto y la mortalidad neonatal p < 0,001. Conclusión: Los datos de la investigación muestran una reducción de la mortalidad neonatal en la región de estudio, al tiempo que señalan la necesidad de fortalecer algunas acciones en el período gestacional para evitar condiciones que favorezcan la mortalidad infantil, como el nacimiento prematuro y la desnutrición. Otros datos se refieren al diligenciamiento de declaraciones de neonatos vivos y defunciones, debido a que muchas variables presentaron el ítem "ignorado", refiriéndose al suministro de información incorrecta o incompleta.

Abstract Objective: To characterize early and late neonatal mortality in the state of Rio Grande do Norte (Brazil) from 2008 to 2017. Methodology: Descriptive, temporal epidemiological study under a retrospective quantitative approach, with data from the sus Department of Informatics (DATASUS) on neonatal deaths occurred between January 2008 and December 2017 in the state of Rio Grande do Norte by place of residence. Results: The sample consisted of a total of 4,531 deaths, the most prevalent being: early neonatal death (79.65 %), male gender (54.71 %), pregnancy of less than 27 weeks (34.05 %), childbirth type (49.93 %), newborns weighing less than 2,500g (68.57 %), and mothers with 8 to 11 years of schooling. Between 2008, the initial year of collection, and 2017, the final year, neonatal mortality decreased by 23.83 %. Male mortality was higher than female in all years, ranging between 0.09 and 0.08, respectively. The chi-square independence test showed an association between type of delivery and neonatal mortality of p < 0.001. Conclusion: Research data show a reduction of neonatal mortality in the RN state, while pointing the need to strengthen actions during the gestational period in order to avoid conditions favorable to infant mortality such as prematurity and malnutrition. Other proven data refers to the filing of "live birth" or "death" statements, where several variables presented the item "ignored," referring to incorrect or non-filling information.

Resumo Objetivo: Caracterizar a mortalidade neonatal precoce e tardia no estado do Rio Grande do Norte de 2008 a 2017. Metodologia: Estudo epidemiológico descritivo, temporal de abordagem quantitativa retrospectiva, com dados do Departamento de Informática do Sistema Único de Saúde (DATASUS) sobre os óbitos neonatais ocorridos entre janeiro de 2008 e dezembro de 2017 no estado do Rio Grande do Norte por local de moradia. Resultados: A amostra foi composta de um total de 4.531 óbitos, sendo mais prevalente óbito neonatal precoce (79,65 %), sexo masculino (54,71 %), gestação inferior a 27 semanas (34,05 %), parto do tipo vaginal (49,93 %), recém-nascidos com peso menor que 2.500 g (68,57 %) e mães com escolaridade entre 8 e 11 anos de estudo. Entre 2008, ano inicial de coleta, e 2017, ano final, a mortalidade neonatal apresentou redução de 23,83 %. A mortalidade masculina se apresentou maior que a feminina em todos os anos, com variação entre 0,09 e 0,08 respectivamente. O teste de qui-quadrado de independência mostrou que existe associação entre o tipo de parto e a mortalidade neonatal p < 0,001. Conclusão: Os dados da pesquisa evidenciam a redução da mortalidade neonatal no estado, ao mesmo tempo que aponta para a necessidade do fortalecimento de ações no período gestacional a fim de evitar condições favoráveis à mortalidade infantil, como a prematuridade e a desnutrição. Outro dado comprovado refere-se ao preenchimento das declarações de nascido vivo e óbito, visto que muitas variáveis apresentaram o item "ignorado" referente ao preenchimento incorreto ou não preenchimento da informação.

https://doi.org/10.15446/av.enferm.v38n3.84594 382 downloads

PROPRIEDADES FÍSICAS E MECÂNICAS DE PAPÉIS RECICLADOS UTILIZADOS PARA FABRICAÇÃO DE TUBETES
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Cardoso, Marco Túlio

; Carneiro, Angélica de Cássia Oliveira

; Oliveira, Rubens Chaves de

; Carvalho, Ana Márcia Macedo Ladeira

; Patrício Júnior, Wagner

; Martins, Maria Cristina

; Santos, Rosimeire Cavalcanti dos

; Silva, Juliana Cristina da

Ciência Florestal

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jun 2012, Volume 22 N. 2 Pages 403 - 411

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

RESUMO O presente trabalho objetivou estudar, através de ensaios laboratoriais, as propriedades físicas e mecânicas de papéis reciclados utilizados para produção de tubetes. Para tanto se utilizou seis tipos de papéis com gramatura média de 400 g/m² e para os ensaios de laboratório seguiu-se os procedimentos da Technical Association of Pulp and Paper Industry. Verificou-se diferença significativa entre os papéis estudados quanto às características físicas e mecânicas, sendo que o papel Tipo A1 obteve, de modo geral, os melhores resultados, justificando seu alto preço no mercado. O papel A3 foi o de maior densidade, dado relevante para indústria de tubetes, já que estes são geralmente comercializados por peso. Conclui-se que todos os papéis estudados são indicados para produção de tubetes, devendo ser utilizados de acordo com as exigências do cliente, visto que o preço do papel é que determina, na maioria das vezes, o valor do tubete.

ABSTRACT The present study investigated, through laboratory testing, the physical and mechanical properties of recycled paper used to produce tubes. To do so, we used six types of paper with a weight average of 400 g / m² and once the laboratory tests followed the procedures of the Technical Association of Pulp and Paper Industry. There was significant difference between the roles studied in terms of physical and mechanical characteristics, and the paper type A1 had, in general, the best results, justifying its high price in the market. The A3 has the highest density, the data relevant to industry tubes, since these are usually sold by weight. It is concluded that all of the studied papers are suitable for tube production, being used in accordance with the customer's demands, since the price of the paper is what determines, most of the time, the tube value.

https://doi.org/10.5902/198050985748 696 downloads

Deriva simulada de formulações comerciais de glyphosate sobre maracujazeiro amarelo
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Wagner Júnior, A.

; Tuffi Santos, L.D.

; Santos, C.E.M.

; Silva, J.O.C.

; Pimentel, L.D.

; Bruckner, C.H.

; Ferreira, F.A.

Planta Daninha

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2008, Volume 26 N. 3 Pages 677 - 683

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

Objetivou-se com este trabalho avaliar os efeitos da deriva de formulações comerciais de glyphosate no desenvolvimento de plantas jovens de maracujazeiro amarelo. O trabalho foi realizado em casa de vegetação do Departamento de Fitotecnia da Universidade Federal de Viçosa, durante o período de março a abril de 2007. Foi utilizado o delineamento experimental de blocos casualizados, em esquema fatorial 3 x 4 + 1, em que três foram as formulações de glyphosate e cinco foram as doses utilizadas acrescidas de testemunha sem herbicida. O trabalho foi conduzido com cinco repetições, sendo cada planta considerada como parcela experimental. As formulações comerciais aplicadas foram Roundup Transorb®, Roundup Original® e Zapp QI®, utilizando-se as seguintes doses (g e.a ha-1): 43,2; 86,4; 172,8; e 345,6 g ha-1. Aos 28 dias após a aplicação (DAA), avaliaram-se os comprimentos da parte aérea, da raiz e total (cm); o diâmetro do caule (mm); o número de folhas e de ramificações primárias; a massa seca da parte aérea e da raiz das plantas (g); e a área foliar por planta (cm²). Aos 7, 14 e 28 DAA, avaliou-se, visualmente, a porcentagem de intoxicação das plantas. O glyphosate em deriva simulada, independentemente das formulações utilizadas, ocasionou injúrias no maracujazeiro amarelo, acarretando redução no crescimento e desenvolvimento das plantas. As formulações Roundup Transorb® e Roundup Original® foram mais prejudiciais às plantas que o Zapp Qi®. O maracujazeiro amarelo mostrou-se suscetível à deriva, devendo o glyphosate ser usado com cuidado, de maneira a atingir somente as plantas daninhas a serem controladas.

The aim of this work was to evaluate the effects of drift simulation of commercial formulations of glyphosate on the growth of young plants of yellow passion fruit. The work was carried out at the Plant Science Department of the Universidade Federal de Viçosa (MG), Brazil, from March to April 2007. The experiment was arranged in a completely randomized block design, with five replications, in a factorial 3 x 4 + 1, consisting of three glyphosate formulations and five doses, (one being the control without herbicide). Each plot was constituted by one plant. The applied doses of glyphosate were 43.2; 86.4; 172.8 and 345.6 g ha-1, using the commercial formulations: Roundup Transorb®, Roundup Original® and Zapp QI®. After 28 days of application, aerial part, root and total length (cm), stem diameter (mm), number of leaves and primary ramifications, aerial part and root dry mass,(g) and the foliar area per plant (cm²) were evaluated. After 7, 14 and 28 application days, intoxication percentage of the plants was also evaluated. Regardless of the formulations used, glyphosate drift simulation caused injury to the yellow passion fruit, reducing plant growth. The herbicides Roundup Transorb® and Roundup Original® were more harmful than Zapp Qi®. The yellow passion fruit was susceptible to drift simulation; thus, glyphosate must be used carefully, so as to reach only the weeds to be controlled.

2214 downloads Cited 5 times in SciELO

Reactivity of 5a,6-anhydrotetracycline platinum(II) complex with biological nucleophiles: a theoretical study
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Marcial, Bruna L.

; Costa, Luiz Antônio S.

; De Almeida, Wagner B.

; Dos Santos, Hélio F.

Journal of the Brazilian Chemical Society

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2008, Volume 19 N. 8 Pages 1437 - 1449

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

No presente artigo, métodos teóricos foram utilizados para o estudo da interação entre o complexo 5a,6-anidrotetraciclina-dicloro-platina(II) (AHTC-Pt) e os nucleófilos adenina (A), guanina (G), cisteína (Cys) e metionina (Met). A espécie [Pt(AHTC)Cl(H2O)]+ foi considerada como reagente em todos os processos investigados. Os valores calculados para ΔGa,aq no nível B3LYP/6-311+G(2d,p) foram 21,7 e 20,7 kcal mol-1 para as interações com A e G, respectivamente, os quais estão em acordo com o comportamento esperado, sendo a reação com G mais rápida (ΔGa expt = 18,5 kcal mol-1 para G). Para os processos envolvendo os aminoácidos, as barreiras de energia calculadas foram 17,6 (Cys) e 18,5 kcal mol-1 (Met), as quais são ligeiramente menores do que os valores experimentais para a cisplatina (20,5 e 20,2 kcal mol-1, respectivamente). Esses resultados mostram que a reatividade do complexo AHTC-Pt é comparável a da cisplatina e, portanto, o mesmo pode ser considerado um sistema relevante para o desenvolvimento de novos agentes antitumorais.

This paper describes a theoretical analysis of the interaction between 5a,6-anhydrotetracycline platinum(II) complex (AHTC-Pt) and some biological nucleophiles; adenine (A), guanine (G), cysteine (Cys) and methionine (Met). The aquated species [Pt(AHTC)Cl(H2O)]+ was taken as reagent for the processes studied here. For DNA bases (A and G), the calculated values for ΔGa,aq at the B3LYP/6-311+G(2d,p) level were 21.7 and 20.7 kcal mol-1 for interaction with A and G, respectively, which are in accordance with the expected behavior of faster process involving G. These values are higher than the experimental activation energy for the parent compound cisplatin (18.5 kcal mol-1 for interaction with G). For the process involving the amino-acids, the barriers were 17.6 (Cys) and 18.5 kcal mol-1 (Met), which are lower than the observed values for cisplatin (20.5 and 20.2 kcal mol-1, respectively). These outcomes show that AHTC-Pt hybrid complex may be considered a promising lead compound in the development of novel anticancer drugs based on platinum complex.

1618 downloads

Deriva de herbicidas e efeito de fungicida X herbicida em plantas jovens de pessegueiro
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Tuffi Santos, L.D.

; Wagner Júnior, A.

; Silva, J.O.C.

; Pimentel, L.D.

; Santos, C.E.M.

; Bruckner, C.H.

; Ferreira, F.A.

Planta Daninha

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sep 2006, Volume 24 N. 3 Pages 505 - 512

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

O objetivo deste trabalho foi avaliar os efeitos da deriva de glyphosate e triclopyr sobre plantas jovens de pessegueiro, bem como o comportamento destas quando submetidas à deriva de glyphosate com tratamento prévio de fungicida. No experimento 1, a simulação da deriva foi feita por aplicação de subdoses dos herbicidas glyphosate (43,2; 86,4; 172,8; e 345,8 g ha-1), triclopyr (14,4; 28,8; 57,6; e 115,2 g ha-1) e pela mistura de glyphosate + triclopyr (43,2 + 24,4; 86,4 + 28,8; e 172,8 + 57,6 g ha-1), constituindo os tratamentos. O experimento 2 foi num fatorial 2 x 6 [fungicida (presença e ausência de aplicação) x subdoses de glyphosate (0; 43,2; 86,4; 129,6; 172,8; e 345,6 g ha-1)]. No experimento 1, plantas tratadas com glyphosate e triclopyr nas doses de 345,6 e 57,6 g e.a. ha-1, respectivamente, apresentaram maiores percentuais de intoxicação, não havendo efeito da deriva destes herbicidas no desenvolvimento inicial. No experimento 2, as doses de glyphosate influenciaram o desenvolvimento inicial das plantas, com efeitos proporcionais ao aumento das doses. O fungicida não influenciou o desenvolvimento inicial, mas a porcentagem de intoxicação foi maior em plantas tratadas, indicando possível efeito sinérgico entre os defensivos testados.

The aim of this work was to evaluate the effects of glyphosate and triclopyr drift on the initial growth of peach tree seedlings, as well as the behavior of these seedlings when submitted to glyphosate drift with fungicidal treatment. In Experiment 1, simulation drift was performed by applying glyphosate (43.2; 86.4; 172.8 and 345.8 g ha-1 ), triclopyr (14.4; 28.8; 57.6 and 115.2 g ha-1 ) and the mixture glyphosate + triclopyr (43.2 + 24.4; 86.4 + 28.8 and 172.8 + 57.6 g ha-1), as the treatments. Experiment 2 was arranged in a 2 x 6 factorial scheme [fungicide (with and without of application) x reduced rates of glyphosate (0; 43.2; 86.4; 129.6; 172.8 and 345.6 g ha-1)]. In Experiment 1, peach seedlings treated with glyphosate and triclopyr; 345.6 g and 57.6 g ha-1, respectively, presented the highest intoxication percentage, with no drift effect being verified on plant growth. In Experiment 2, the glyphosate doses applied influenced initial plant growth, with the effects being proportional to increase of the doses. The fungicide did not influence peach seedling growth, but the intoxication percentage was higher in the plants treated, indicating a possible synergistic effect among the herbicides tested.

2182 downloads Cited 2 times in SciELO

Tamanho da semente e substratos na germinação e crescimento inicial de mudas de cagaiteira
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Nietsche, Silvia

; Gonçalves, Valdeir Dias

; Pereira, Marlon Cristian Toledo

; Santos, Fernando Almeida

; Abreu, Samuel Campos de

; Mota, Wagner Ferreira da

Ciência e Agrotecnologia

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dec 2004, Volume 28 N. 6 Pages 1321 - 1325

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

A cultura da cagaiteira apresenta perspectivas de expansão no cerrado e no Nordeste brasileiro. Com o presente trabalho teve-se como objetivo avaliar as características de germinação de sementes de cagaiteira de diferentes tamanhos em três tipos de substratos. O delineamento experimental utilizado foi de blocos inteiramente casualizados em um esquema de parcela subdividida, com fatorial (2 x3), consistindo de dois tamanhos de sementes, grandes (13,5 mm de largura, 15,91 mm de comprimento e 1,41 g de massa) e pequenas (9,94 mm de largura, 12,19 mm de comprimento e 0,68 g de massa) em três tipos de substratos (plugmix; areia, argila e esterco de curral, na proporção v/v 1:1:1; e areia e argila na proporção v/v 1:1). Pelos resultados, observou-se que, independentemente do tamanho da semente e do tipo de substrato, não houve diferenças significativas quanto à porcentagem de emergência, que foi superior a 90%. Nas características de índice de velocidade de emergência, altura e número de folhas, observou-se superioridade para as plantas provenientes de sementes grandes. Em relação aos diferentes tipos de substratos, houve diferenças significativas para as características de altura e número de folhas, indicando a superioridade dos substratos à base de areia e argila.

The culture of cagaita presents perspectives of expansion in the open pasture and Brazilian northeast, this culture is usually spread by seeds. This work aimed at evaluating the characteristics of germination of different sizes of seeds on three types of substrates. The experimental was designed in blocks at random outlined in subparcels with four replications, in a factorial system of two seed sizes, big and small, on three types of substrates (plugmix, sand; clay and manure; sand and clay). The results showed that regardless of the seed size there were not significant differences for germination percentage. When analyzed characteristic of germination speed index, height and leaf number, significant superiority was observed for the plants from big seeds. Significant differences for characteristics of height and leaf number were also observed indicating superiority of sand and clay substratum. We can conclude that independently of the substratum type, percentages of cagaita seed germination are over 90%, but plantlets initial growth may be damaged if the nurseryman does not use a balanced and appropriate substratum to the specie.

4192 downloads Cited 12 times in SciELO

Colony polymerase chain reaction of stably transfected Trypanosoma cruzi grown on solid medium
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Santos, Wagner G dos

; Metcheva, Ivelina

; Buck, Gregory A

Memórias do Instituto Oswaldo Cruz

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jan 2000, Volume 95 N. 1 Pages 111 - 114

Abstract: En | Text: En | PDF: En

Tools for the genetic manipulation of Trypanosoma cruzi are largely unavailable, although several vectors for transfection of epimastigotes and expression of foreign or recombinant genes have been developed. We have previously constructed several plasmid vectors in which recombinant genes are expressed in T. cruzi using the rRNA promoter. In this report, we demonstrate that one of these vectors can simultaneously mediate expression of neomycin phosphotransferase and green fluorescent protein when used to stably transfect cultured epimastigotes. These stably transfected epimastigotes can be selected and cloned as unique colonies on solid medium. We describe a simple colony PCR approach to the screening of these T. cruzi colonies for relevant genes. Thus, the methodologies outlined herein provide important new tools for the genetic dissection of this important parasite.

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