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Exclusive breastfeeding and its association with pre- and postnatal factors: a cohort prospective study pre factors
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Melo, Letícia Santos Alves de

; Silva, Lorena Fonseca

; Silva, Silvio Rocha Corrêa da

; Rosell, Fernanda Lopez

; Valsecki Júnior, Aylton

; Zuanon, Angela Cristina Cilense

; Tagliaferro, Elaine Pereira da Silva

Brazilian Journal of Oral Sciences

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2024, Volume 23 elocation e244708

Abstract: En | Text: En | PDF: En

Aim This cohort study aimed to investigate the exclusive breastfeeding (EBF) prevalence and its association with maternal EBF intention and other variables. Method Pregnant women (n=653) in the third trimester of pregnancy filled out a questionnaire on EBF intention using the Infant Feeding Intentions scale and other variables. After delivery, mothers were contacted by phone at the first (T1; n=467), third (T3; n=333), and sixth (T6; n=217) month of the baby’s life or until breastfeeding was terminated, to collect data on breastfeeding, delivery, the newborn, oral habits, and family variables. The associations between independent variables and the outcomes (EBF prevalence at T1, T3, and T6) were analyzed by simple and multiple logistic regression models (α =0.05). Results EBF prevalence was 81.2% at T1, 64.0% at T3, and 35.9% at T6. Nott use baby bottle (OR=612.59; OR=139.08; OR=15.05) and no pacifier use (OR=2.94; OR=2.78; OR=2.93) were associated with the outcome at T1, T3, and T6, respectively. Other associated variables were strong EBF intention (OR=1.71) at T1; higher birth weight (OR=1.62), childcare support (OR=2.59), maternal age (OR=0.54), being married or having a partner (OR=1.82) at T3; and not returning to work (OR=2.39) at T6. Conclusion The EBF prevalence was high at the first month of the baby’s life and decreased over six months. The EBF intention affected EBF initiation. Variables related to the mother´s demographic characteristics, the baby´s birth weight, the childcare support or the baby bottle/pacifier use were associated with EBF. n=653 n653 n 653 (n=653 delivery T1 T (T1 n=467, n467 n=467 , 467 n=467) T3 (T3 n=333, n333 n=333 333 n=333) T6 (T6 n=217 n217 217 babys s terminated newborn habits α =0.05. 005 =0.05 . 0 05 =0.05) 812 81 2 81.2 640 64 64.0 359 35 9 35.9 OR=612.59 OR61259 OR 612 59 (OR=612.59 OR=139.08 OR13908 139 08 OR=15.05 OR1505 15 OR=2.94 OR294 94 (OR=2.94 OR=2.78 OR278 78 OR=2.93 OR293 93 respectively OR=1.71 OR171 1 71 (OR=1.71 OR=1.62, OR162 OR=1.62 62 (OR=1.62) OR=2.59, OR259 OR=2.59 (OR=2.59) OR=0.54, OR054 OR=0.54 54 (OR=0.54) OR=1.82 OR182 82 (OR=1.82 OR=2.39 OR239 39 (OR=2.39 months initiation mother characteristics bottlepacifier n=65 n65 65 (n=65 (T n46 n=46 46 n33 n=33 33 n=21 n21 21 00 =0.0 8 81. 6 64. 3 35. OR=612.5 OR6125 61 5 (OR=612.5 OR=139.0 OR1390 13 OR=15.0 OR150 OR=2.9 OR29 (OR=2.9 OR=2.7 OR27 7 OR=1.7 OR17 (OR=1.7 OR16 OR=1.6 (OR=1.62 OR25 OR=2.5 (OR=2.59 OR05 OR=0.5 (OR=0.54 OR=1.8 OR18 (OR=1.8 OR=2.3 OR23 (OR=2.3 n=6 n6 (n=6 n4 n=4 4 n3 n=3 n=2 n2 =0. OR=612. OR612 (OR=612. OR=139. OR139 OR=15. OR15 OR=2. OR2 (OR=2. OR=1. OR1 (OR=1. (OR=1.6 (OR=2.5 OR0 OR=0. (OR=0.5 n= (n= =0 OR=612 OR61 (OR=612 OR=139 OR13 OR=15 OR=2 (OR=2 OR=1 (OR=1 OR=0 (OR=0. (n = OR=61 OR6 (OR=61 OR=13 OR= (OR= (OR=0 OR=6 (OR=6 (OR

https://doi.org/10.20396/bjos.v23i00.8674708

Posicionamento do Departamento de Imagem Cardiovascular da Sociedade Brasileira de Cardiologia sobre o Uso do Strain Miocárdico na Rotina do Cardiologista – 2023 202 20 2
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Almeida, André Luiz Cerqueira

; Melo, Marcelo Dantas Tavares de

; Bihan, David Costa de Souza Le

; Vieira, Marcelo Luiz Campos

; Pena, José Luiz Barros

; Del Castillo, José Maria

; Abensur, Henry

; Hortegal, Renato de Aguiar

; Otto, Maria Estefania Bosco

; Piveta, Rafael Bonafim

; Dantas, Maria Rosa

; Assef, Jorge Eduardo

; Beck, Adenalva Lima de Souza

; Santo, Thais Harada Campos Espirito

; Silva, Tonnison de Oliveira

; Salemi, Vera Maria Cury

; Rocon, Camila

; Lima, Márcio Silva Miguel

; Barberato, Silvio Henrique

; Rodrigues, Ana Clara

; Rabschkowisky, Arnaldo

; Frota, Daniela do Carmo Rassi

; Gripp, Eliza de Almeida

; Barretto, Rodrigo Bellio de Mattos

; Silva, Sandra Marques e

; Cauduro, Sanderson Antonio

; Pinheiro, Aurélio Carvalho

; Araujo, Salustiano Pereira de

; Tressino, Cintia Galhardo

; Silva, Carlos Eduardo Suaide

; Monaco, Claudia Gianini

; Paiva, Marcelo Goulart

; Fisher, Cláudio Henrique

; Alves, Marco Stephan Lofrano

; Grau, Cláudia R. Pinheiro de Castro

; Santos, Maria Veronica Camara dos

; Guimarães, Isabel Cristina Britto

; Morhy, Samira Saady

; Leal, Gabriela Nunes

; Soares, Andressa Mussi

; Cruz, Cecilia Beatriz Bittencourt Viana

; Guimarães Filho, Fabio Villaça

; Assunção, Bruna Morhy Borges Leal

; Fernandes, Rafael Modesto

; Saraiva, Roberto Magalhães

; Tsutsui, Jeane Mike

; Soares, Fábio Luis de Jesus

; Falcão, Sandra Nívea dos Reis Saraiva

; Hotta, Viviane Tiemi

; Armstrong, Anderson da Costa

; Hygidio, Daniel de Andrade

; Miglioranza, Marcelo Haertel

; Camarozano, Ana Cristina

; Lopes, Marly Maria Uellendahl

; Cerci, Rodrigo Julio

; Siqueira, Maria Eduarda Menezes de

; Torreão, Jorge Andion

; Rochitte, Carlos Eduardo

; Felix, Alex

Arquivos Brasileiros de Cardiologia

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dec 2023, Volume 120 N. 12 elocation e20230646

Abstract: Pt | Text: Pt | PDF: Pt

https://doi.org/10.36660/abc.20230646

Cracking process in expansive soil with and without vegetation covers in dry and rainy seasons at field scale
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Ferreira, Silvio Romero de Melo

; Araújo, Arthur Gomes Dantas

; Santos, Martha Maria Bezerra

Revista Brasileira de Ciência do Solo

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2023, Volume 47 elocation e0230055

Abstract: En | Text: En | PDF: En

ABSTRACT The presence of desiccation cracks in the soil alters its hydromechanical behavior, increasing the soil's water infiltration capacity, mobilizing the potential for expansion. This may affect the performance of the structural elements of the construction. This study aimed to evaluate the mechanics of expansion, contraction and cracking of the expansive soil of Paulista - Pernambuco, Brazil, through field trials, subject to wetting cycles and drying. The studied soil is a sandy silty clay of high compressibility with medium to very high expansion potential. The process of formation and propagation of cracks was analyzed using digital images and the monitoring of samples subjected to drying and wetting cycles. The indices of crack geometry increased with the advancement of desiccation but did not stabilize. During the wetting period, they tend to close. The pattern of cracks in the tests varied according to the presence or absence of vegetation. It was concluded that the vegetation cover has a significant influence on the standardization and the crack formation and propagation process. behavior soils s capacity construction Pernambuco Brazil trials stabilize period close

https://doi.org/10.36783/18069657rbcs20230055

Association between Pacifier Use, Bottle-Feeding, and Pre-Postnatal Variables: A Cohort Study Use BottleFeeding, BottleFeeding Bottle Feeding, Feeding Bottle-Feeding PrePostnatal Pre Postnatal Variables
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Melo, Letícia Santos Alves de

; Silva, Lorena Fonseca

; Silva, Silvio Rocha Corrêa da

; Rosell, Fernanda Lopez

; Valsecki Júnior, Aylton

; Zuanon, Angela Cristina Cilense

; Tagliaferro, Elaine Pereira da Silva

Pesquisa Brasileira em Odontopediatria e Clínica Integrada

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2023, Volume 23 elocation e220160

Abstract: En | Text: En | PDF: En

ABSTRACT Objective: To determine the prevalence and analyze the variables associated with the use of pacifiers and/or bottles by infants up to 6 months of age. Material and Methods: Data on sociodemographic characteristics, intention to offer pacifier and bottle-feeding, pregnancy and breastfeeding (BF) variables were collected at baseline by interviews and a self-administered questionnaire among pregnant women in the 3rd trimester. After delivery, mother-baby binomials were followed by phone calls at the 1st, 3rd, and 6th months of the baby's life (n=467) to gather information on the type of delivery, baby’s gender, BF in the first hour of the newborn’s life, baby’s weight, mother’s return to work, and oral habits. Association analyses were performed using logistic regression models with a 5% significance level with the pacifier/bottle-feeding use as the outcome. Results: Most mothers (52.5%) reported their babies used bottle-feeding, 48.2% used pacifiers and 33.4% used both of them throughout the 6 months. Intention to offer pacifier and bottle-feeding was reported by 45.0% and 54.8% of the mothers at the 3rd trimester of the pregnancy, respectively. Not living in one’s own residence (OR=1.53; 95%CI: 1.05-2.24) and having the prenatal intention of offering a pacifier (OR=2.50; 95%CI: 1.63-3.83) to the baby were significantly associated with pacifier use. Variables significantly associated with bottle-feeding were mother’s return to work (OR=2.48; 95%CI: 1.54-3.97), baby’s lower birth weight (OR=1.58; IC95%: 1.07-2.33), and prenatal intention to offer bottle-feeding (OR=2.51; 95%CI 1.56-4.04). Conclusion: About half of the babies used pacifiers or were bottle-fed, which were associated with the mother’s prenatal intention to offer them to their babies and socioeconomic factors. Objective andor age Methods characteristics bottlefeeding, bottlefeeding bottle feeding, feeding (BF selfadministered self administered rd delivery motherbaby mother 1st st th babys s n=467 n467 n 467 (n=467 gender newborns newborn habits 5 pacifier/bottlefeeding pacifierbottlefeeding pacifier/bottle outcome Results 52.5% 525 52 (52.5% 482 48 2 48.2 334 33 4 33.4 450 45 0 45.0 548 54 8 54.8 respectively ones one OR=1.53 OR153 OR 1 53 (OR=1.53 95CI CI 95 1.052.24 105224 1.05 2.24 05 24 1.05-2.24 OR=2.50 OR250 50 (OR=2.50 1.633.83 163383 1.63 3.83 63 3 83 1.63-3.83 OR=2.48 OR248 (OR=2.48 1.543.97, 154397 1.54 3.97 , 97 1.54-3.97) OR=1.58 OR158 58 (OR=1.58 IC95% IC95 IC 1.072.33, 107233 1.07 2.33 07 1.07-2.33) OR=2.51 OR251 51 (OR=2.51 1.564.04. 156404 1.56 4.04 . 56 04 1.56-4.04) Conclusion bottlefed, bottlefed fed, fed bottle-fed factors n=46 n46 46 (n=46 pacifierbottle 52.5 (52.5 48. 33. 45. 54. OR=1.5 OR15 (OR=1.5 9 052 1.052.2 10522 105 1.0 224 2.2 1.05-2.2 OR=2.5 OR25 (OR=2.5 633 1.633.8 16338 163 1.6 383 3.8 1.63-3.8 OR=2.4 OR24 (OR=2.4 543 1.543.97 15439 154 1.5 397 3.9 1.54-3.97 IC9 072 1.072.33 10723 107 233 2.3 1.07-2.33 564 1.564.04 15640 156 404 4.0 1.56-4.04 n=4 n4 (n=4 52. (52. OR=1. OR1 (OR=1. 1.052. 1052 10 1. 22 2. 1.05-2. OR=2. OR2 (OR=2. 1.633. 1633 16 38 3. 1.63-3. 1.543.9 1543 15 39 1.54-3.9 1.072.3 1072 23 1.07-2.3 1.564.0 1564 40 4. 1.56-4.0 n= (n= (52 OR=1 (OR=1 1.052 1.05-2 OR=2 (OR=2 1.633 1.63-3 1.543. 1.54-3. 1.072. 1.07-2. 1.564. 1.56-4. (n (5 OR= (OR= 1.05- 1.63- 1.543 1.54-3 1.072 1.07-2 1.564 1.56-4 ( (OR 1.54- 1.07- 1.56-

https://doi.org/10.1590/pboci.2023.084

Favorable Safety Experience of Local Dental Anesthesia in ICD Recipients with Cardiac Channelopathies
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Oliveira, Ana Carolina Guimarães

; Neves, Itamara Lucia Itagiba

; Sacilotto, Luciana

; Olivetti, Natália Quintella Sangiorgi

; Bueno, Savia Christina Pereira

; Pessente, Gabrielle D’Arezzo

; Santos-Paul, Marcela Alves dos

; Montano, Tânia Cristina Pedroso

; Carvalho, Cíntia Maria Alencar de

; Grupi, Cesar José

; Barbosa, Sílvio Alves

; Pastore, Carlos Alberto

; Samesima, Nelson

; Wu, Tan Chen

; Hachul, Denise Tessariol

; Scanavacca, Maurício Ibrahim

; Neves, Ricardo Simões

; Darrieux, Francisco Carlos da Costa

International Journal of Cardiovascular Sciences

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2023, Volume 36 elocation e20200312

Abstract: En | Text: En | PDF: En

Abstract Background Dental anesthetic management in implantable cardioverter defibrillator (ICD) recipients with cardiac channelopathies (CCh) can be challenging due to the potential risk of life-threatening arrhythmias and appropriate ICD therapies during procedural time. Objectives The present study assessed the hypothesis that the use of local dental anesthesia with 2% lidocaine with 1:100,000 epinephrine or without a vasoconstrictor can be safe in selected ICD and CCh patients, not resulting in life-threatening events (LTE). Methods Restorative dental treatment under local dental anesthesia was made in two sessions, with a wash-out period of 7 days (cross-over trial), conducting with a 28h - Holter monitoring, and 12-lead electrocardiography, digital sphygmomanometry, and anxiety scale assessments in 3 time periods. Statistical analysis carried out the paired Student’s t test and the Wilcoxon signed-rank test. In all cases, a significance level of 5% was adopted. All patients were in stable condition with no recent events before dental care. Results Twenty-four consecutive procedures were performed in 12 patients (9 women, 3 men) with CCh and ICD: 7 (58.3%) had long QT syndrome (LQTS), 4 (33.3%) Brugada syndrome (BrS), and 1 (8.3%) Catecholaminergic polymorphic ventricular tachycardia (CPVT). Holter analysis showed no increased heart rate (HR) or sustained arrhythmias. Blood pressure (BP), electrocardiographic changes and anxiety measurement showed no statistically significant differences. No LTE occurred during dental treatment, regardless of the type of anesthesia. Conclusion Lidocaine administration, with or without epinephrine, can be safely used in selected CCh-ICD patients without LTE. These preliminary findings need to be confirmed in a larger population with ICD and CCh. (ICD (CCh lifethreatening life threatening 2 1100,000 1100000 100,000 100 000 1:100,00 . (LTE) sessions washout wash crossover cross over trial, trial , trial) h monitoring 12lead lead electrocardiography sphygmomanometry periods Students Student s signedrank signed rank cases 5 adopted care Twentyfour Twenty four 9 ( women men 58.3% 583 58 (58.3% LQTS, LQTS (LQTS) 33.3% 333 33 (33.3% BrS, BrS (BrS) 8.3% 83 8 (8.3% CPVT. CPVT (CPVT) HR (HR BP, BP (BP) differences administration CChICD 1100 1100,00 110000 100000 100,00 10 00 1:100,0 (LTE 58.3 (58.3 (LQTS 33.3 (33.3 (BrS 8.3 (8.3 (CPVT (BP 110 1100,0 11000 10000 100,0 0 1:100, 58. (58. 33. (33. 8. (8. 11 1100, 1000 100, 1:100 (58 (33 (8 1:10 (5 (3 1:1 1:

https://doi.org/10.36660/ijcs.20200312

Hydropedological digital mapping: machine learning applied to spectral VIS-IR and radiometric data dimensionality reduction mapping VISIR VIS IR
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Santos, Priscilla Azevedo dos

; Pinheiro, Helena Saraiva Koenow

; Júnior, Waldir de Carvalho

; Silva, Igor Leite da

; Pereira, Nilson Rendeiro

; Bhering, Silvio Barge

; Ceddia, Marcos Bacis

Revista Brasileira de Ciência do Solo

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2023, Volume 47 elocation e0220149

Abstract: En | Text: En | PDF: En

ABSTRACT Pedosphere-hydrosphere interface accounts for the association between soil hydrology and landscape, represented by topographic and Remote Sensing data support and integration. This study aimed to analyze different statistical radiometric and spectral data selection methods and dimensionality reduce environment-related data to support the classification of soil physical-hydric properties, such as soil basic infiltration rate (bir) and saturated hydraulic conductivity (Ksat); as well as to act in data mining processes applied to hydropedological properties digital mapping. Accordingly, research integrated information from Visible to Infrared (VIS-IR) spectral indices and Sentinel’s 2A mission Multispectral Instrument (MSI) sensor bands, terrain numerical modeling and aerogeophysics set to model soil-water content in two soil layers (0.00-0.20 m and 0.20-0.40 m). Pre-processed data were subjected to statistical analysis (multivariate and hypothesis tests); subsequently, the methods were applied (variation inflation factor - VIF, Stepwise Akaike information criterion – Stepwise AIC, and recursive feature elimination - RFE) to mine covariates used for Random Forest modeling. Based on the results, there were distinctions and singularities in spectral and radiometric data selection for each adopted method; the importance degree, and contribution of each one to soil physical-hydric properties have varied. According to the applied statistical metrics and decision-making criteria (highest R2 and lowest RMSE / MAE), the chosen methods were RFE (0.00-0.20 m layers) and Stepwise AIC (0.20-0.40 m layers) - both concerned with the assessed variables (bir and Ksat). This approach captured the importance of environmental variables and highlighted their potential use in hydropedological digital mapping at Guapi-Macacu watershed. Pedospherehydrosphere Pedosphere hydrosphere landscape integration environmentrelated environment related physicalhydric physical hydric bir Ksat (Ksat) Accordingly VISIR VIS IR (VIS-IR Sentinels Sentinel s A MSI (MSI bands soilwater water 0.000.20 000020 0.00 0.20 0 00 20 (0.00-0.2 0.200.40 020040 0.40 40 0.20-0.4 m. . m) Preprocessed Pre processed multivariate tests tests) subsequently variation VIF results method degree varied decisionmaking decision making highest R MAE, MAE , MAE) (0.20-0.4 Ksat. Ksat) GuapiMacacu Guapi Macacu watershed (Ksat 000 0.000.2 00002 0.0 020 0.2 2 (0.00-0. 200 0.200.4 02004 040 0.4 4 0.20-0. (0.20-0. 0.000. 0000 0. 02 (0.00-0 0.200. 0200 04 0.20-0 (0.20-0 0.000 (0.00- 0.200 0.20- (0.20- (0.00 (0.20 (0.0 (0.2 (0. (0 (

https://doi.org/10.36783/18069657rbcs20220149

Clinical and laboratory profile of patients with sickle cell anemia
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Sant'Ana, Phelipe Gabriel dos Santos

; Araujo, Ariane Moreira

; Pimenta, Cynthia Teixeira

; Bezerra, Mário Lúcio Pacheco Ker

; Borges Junior, Sílvio Pereira

; Martins Neto, Viviana

; Dias, Janaina Sousa

; Lopes, Aline de Freitas

; Rios, Danyelle Romana Alves

; Pinheiro, Melina de Barros

Revista Brasileira de Hematologia e Hemoterapia

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mar 2017, Volume 39 N. 1 Pages 40 - 45

Abstract: En | Text: En | PDF: En

Abstract Objective: This study aimed to describe and analyze clinical and laboratory characteristics of patients with sickle cell anemia treated at the Hemominas Foundation, in Divinópolis, Brazil. Furthermore, this study aimed to compare the clinical and laboratory outcomes of the group of patients treated with hydroxyurea with those patients that were not treated with hydroxyurea. Methods: Clinical and laboratorial data were obtained by analyzing medical records of patients with sickle cell anemia. Results: Data from the medical records of 50 patients were analyzed. Most of the patients were female (56%), aged between 20 and 29 years old. Infections, transfusions, cholecystectomy, splenectomy and systemic arterial hypertension were the most common clinical adverse events of the patients. The most frequent cause of hospitalization was painful crisis. The majority of patients had reduced values of hemoglobin and hematocrit (8.55 ± 1.33 g/dL and 25.7 ± 4.4%, respectively) and increased fetal hemoglobin levels (12 ± 7%). None of the clinical variables was statistically significant on comparing the two groups of patients. Among hematological variables only hemoglobin and hematocrit levels were statistically different between patients treated with hydroxyurea and untreated patients (p-value = 0.005 and p-value = 0.001, respectively). Conclusion: Sickle cell anemia requires treatment and follow-up by a multiprofessional team. A current therapeutic option is hydroxyurea. This drug reduces complications and improves laboratorial parameters of patients. In this study, the use of the drug increased the hemoglobin and hematocrit levels of patients.

https://doi.org/10.1016/j.bjhh.2016.09.007 3414 downloads

Repairability of aged resin composites mediated by different restorative systems
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Lemos, Cleidiel A. A

; Mauro, Sílvio J

; de Campos, Renata A

; dos Santos, Paulo H

; Machado, Lucas S

; Fagundes, Ticiane C

Acta Odontológica Latinoamericana

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apr 2016, Volume 29 N. 1 Pages 7 - 13

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

Avaliar a resistência de união ao cisalhamento de reparos de resina composta com e sem envelhecimento da superfície a ser reparada, utilizando diferentes sistemas adesivos. Noventa corpos de prova foram confeccionados sendo: 10 para o Grupo Controle (GC - sem reparo); 40 para o Grupo I (GI - reparos após 7 dias) e 40 para o Grupo II (GII - reparos após 180 dias). Para os reparos, os grupos GI e GII foram subdivididos em 4 subgrupos com 10 corpos de prova, variando o sistema adesivo e a resina composta: A) Adper Scotch Bond Multipurpose+ Filtek Z350XT; B)Adper Single Bond Plus+ Filtek Z350XT; C)Adper Scotch Bond Multipurpose+ Esthet-X; D) Adper Single Bond Plus+ Esthet-X. Os corpos de prova foram submetidos a uma força de cisalhamento em uma máquina de ensaio universal (EMIC). Os resultados foram analisados pelo teste estatístico Anova dois fatores, seguido pelo teste de Fisher´s. Observou-se melhor comportamento do grupo controle sobre os demais grupos, além disso, os reparos realizados aos 7 dias foram superiores aos dos realizados em 180 dias. Não houve diferença significativaquando se comparou diferentes sistemas adesivos e resinas compostas. Os reparos de resina composta diminuem a resistência mecânica da restauração.O envelheci mento do substrato de resina pode diminuir a resistência ao reparo ao longo do tempo, independentemente do tipo de sistemas adesivos e resinas compostas utilizados.

The aim of this study was to evaluate the shear bond strength of resin composite repairs with and without aging of the surface to be repaired, using different adhesive systems and resin composites. Ninety specimens were prepared: 10 for the Control Group (GC - without repair); 40 for Group I (GI - repairs after 7 days) and 40 for Group II (GII - repairs after 180 days). Groups I and II were divided into 4 subgroups of 10 specimens each, according to the adhesive system and composite resin used: A) Adper Scotch Bond Multipurpose + Filtek Z350 XT; B) Adper Single Bond Plus + Filtek Z350 XT; C) Adper Scotch Bond Multipurpose + Esthet-X; D) Adper Single Bond Plus + Esthet-X. The specimens were tested for shear strength in a universal testing machine. The results were analyzed by two-factor one-way ANOVA and Fisher's post hoc tests (alpha=0.05). The control group had better performance than the other groups. There was no significant difference when comparing different adhesive systems and composite resins. Repairs performed at 7 days were better than those performed at 180 days. The composite repairs decreased the mechanical strength of the restoration. Aging of the resin substrate may decrease repair bond strength over time, regardless of the type of adhesive systems and resin composites used.

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Produção de cebola orgânica em função do uso de cobertura morta e torta de mamona
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Santos, Silvio da S

; Espíndola, José Antonio A

; Guerra, José Guilherme M

; Leal, Marco Antonio de A

; Ribeiro, Raul de LD

Horticultura Brasileira

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sep 2012, Volume 30 N. 3 Pages 549 - 552

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

A cebola é uma hortaliça consumida em grande quantidade e tem sua produção concentrada no âmbito da agricultura familiar, sendo responsável pela geração de emprego e renda para grande número de produtores rurais que tem no cultivo desta espécie sua única fonte de renda. É crescente a demanda por tecnologias para produção de cebola adequadas à agricultura familiar, com ênfase em técnicas agroecológicas. Neste aspecto, destaca-se a utilização de coberturas mortas e adubos orgânicos. O objetivo deste trabalho foi avaliar o efeito de diferentes coberturas mortas, associados a doses crescentes de torta de mamona aplicadas em cobertura, na produção total e no diâmetro dos bulbos de cebola produzidos em sistema orgânico. Observou-se efeito significativo da cobertura morta na produção total e nas diferentes classes de diâmetro de bulbo. Não foram observados efeitos significativos da adubação com a torta de mamona e da interação entre cobertura e adubação com torta de mamona. O efeito benéfico da cobertura morta na produtividade e na qualidade da cebola foi, provavelmente, decorrente da manutenção de maior umidade e da redução da amplitude térmica do solo.

Onion is a highly consumed vegetable whose production is based on smallholder agriculture. The onion production is responsible for the generation of jobs and income for many farmers who have this as the only source of income. There is a growing demand for onion production technologies suitable for smallholders, with emphasis on agroecology. In this respect, we highlight the use of mulches and organic fertilizers. The aim of this study was to evaluate the effect of different mulches, associated to increasing doses of castor bean cake applied in side dressing on total production and diameter of onion bulbs grown in organic system. There was a significant effect of the mulch over the total yield and the yield obtained of different diameter classes of bulbs. There were no significant effects of side dressing with the castor bean cake, neither of the interaction between the mulch and the fertilization with castor bean cake. The beneficial effect of mulch which probably had more influence on the increasing of onion yield was the maintenance of moisture and reduction of soil temperature range.

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10.

Selenato e selenito na produção e biofortificação agronômica com selênio em arroz
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Boldrin, Paulo Fernandes

; Faquin, Valdemar

; Ramos, Sílvio Júnio

; Guilherme, Luiz Roberto Guimarães

; Bastos, Carla Elisa Alves

; Carvalho, Geila Santos

; Costa, Enio Tarso de Souza

Pesquisa Agropecuária Brasileira

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jun 2012, Volume 47 N. 6 Pages 831 - 837

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

O objetivo deste trabalho foi avaliar o efeito da aplicação de doses de selenato e selenito na biofortificação de arroz (Oryza sativa) com Se, bem como a influência dessas formas de Se nos teores de P, S, Fe e Zn nos grãos. O experimento foi conduzido em casa de vegetação, em vasos com 4 dm³ de um Latossolo Vermelho-Amarelo distrófico, de textura média, em arranjo fatorial 5x2, com cinco doses de Se (0, 0,75, 1,50, 3,0 e 6,0 mg dm-3) e duas formas de Se (selenato e selenito). Observou-se que o selenato proporcionou maior eficiência na absorção de Se pelas raízes, aproveitamento pela planta, translocação para a parte aérea e teor desse elemento nos grãos. A aplicação do selênio na adubação altera os teores de P, S e Zn, mas não afeta os de Fe nos grãos de arroz.

The objective of this work was to evaluate the effect of doses of selenate and selenite on rice (Oryza sativa) biofortification with Se, as well the influence of these forms of Se in the levels of P, S, Fe, and Zn in grains. The experiment was conducted in a greenhouse, in pots with 4 dm³ of a sandy clay loam Latosol, with medium texture, in a 5x2 factorial arrangement with five doses of Se (0, 0.75, 1.50, 3.0, and 6.0 mg dm-3) and two forms of Se (selenate and selenite). Selenate provided greater efficiency of root uptake of Se, plant-use efficiency, translocation from roots to shoots, and content of this element in rice grains. The application of Se during fertilization influences the levels of P, S, and Zn, but does not affect those of Fe in rice grains.

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11.

Synthesis and enzymatic evaluation of the guanosine analogue 2-amino-6-mercapto-7-methylpurine ribonucleoside (MESG): insights into the phosphorolysis reaction mechanism based on the blueprint transition state: SN1 or S N2?
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Neto, Brenno A. D.

; Lapis, Alexandre A. M.

; Netz, Paulo A.

; Spencer, John

; Dias, Silvio L. P.

; Tamborim, Silvia M.

; Basso, Luiz A.

; Santos, Diógenes S.

; Dupont, Jairton

Journal of the Brazilian Chemical Society

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2010, Volume 21 N. 1 Pages 151 - 156

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

A modificação experimental para a síntese do MESG (2-amino-6-mercapto-7-metilpurina ribonucleosídeo) 1 foi realizada com sucesso e sua caracterização total apresentada. ESI(+)-MSMS em alta resolução foram realizados indicando que a clivagem nucleosídica como principal e um possível mecanismo S N1. Cálculos ab initio baseados em estados de transição blueprint corroboram com a proposta de um mecanismo S N1 e descartam a possibilidade de um mecanismo S N2. Ensaios com a enzima purina nucleosídica fosforilase (PNP, tanto humana como de M. tuberculosis) indicam a eficiência do substrato na reação de fosforilação do MESG e permitem a determinação de fosfato inorgânico em tempo real em ensaios biológicos.

A modified experimental procedure for the synthesis of MESG (2-amino-6-mercapto-7-methylpurine ribonucleoside) 1 has been successfully performed and its full characterization is presented. High resolution ESI(+)-MSMS indicates both the nucleoside bond cleavage as the main fragmentation in the gas phase and a possible S N1 mechanism. Ab initio transition state calculations based on the blue print transition state support this mechanistic rationale and discard an alternative S N2 mechanism. Assays using purine nucleoside phosphorylase (PNP) enzyme (human and M. tuberculosis sources) indicate its efficiency in the phosphorolysis of MESG and allow the quantitative determination of inorganic phosphate in real time assay.

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12.

A baixa taxa de obtenção da meta do LDL-colesterol numa população de baixa renda
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Vacanti, Luciano J

; Santos, Silvio C. de Moraes

; Fujita, Alessandro M

; Lima, David S

; Lopes, Alan F

; Vetorazi, Rodrigo

; Sellera, Ana

; Scarin, Nataly R

Arquivos Brasileiros de Cardiologia

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sep 2005, Volume 85 N. 3 Pages 162 - 165

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

OBJETIVO: Avaliar o percentual de pacientes adequados às metas preconizadas pelas III Diretrizes sobre Dislipidemias da Sociedade Brasileira de Cardiologia, numa população de baixa renda. Determinar se havia diferença deste percentual, nos pacientes de alto risco, conforme a idade (<75 anos x >75 anos). MÉTODOS: Analisamos consecutivamente 190 pacientes, divididos em dois grupos: 51 pacientes de baixo e médio risco (G I) e 139 de alto risco para doença arterial coronariana (G II). A amostra era caracterizada por pacientes de baixa renda (69% dos pacientes tinham uma renda familiar entre 1 e 2 salários mínimos), cuja terapêutica hipolipemiante era fornecida irregularmente pelo Estado. RESULTADOS: Os G I e G II apresentavam, respectivamente, 70,1±13,7 anos e 13,7% de homens e 68,5±10,6 anos e 62,6% de homens. Dentre os pacientes do G II, 30% apresentavam o LDL-colesterol dentro das metas preconizadas. Sendo que, a freqüência de pacientes adequados às metas foi, significativamente, menor em indivíduos com 75 anos ou mais que aqueles com menos de 75 anos (16% vs. 30%, p=0,04). CONCLUSÃO: Numa população, predominantemente, de baixa renda e sem assistência contínua do Estado para adquirir estatinas, a obtenção das metas preconizadas para o LDL- colesterol, pelas III Diretrizes sobre Dislipidemias da Sociedade Brasileira de Cardiologia, é baixa e ainda, significativamente, menor em pacientes muito idosos, com perfil de alto risco para aterosclerose.

OBJECTIVE: To assess the percentage of patients suitable to the objectives preconized by III Diretrizes sobre Dislipidemias da Sociedade Brasileira de Cardiologia (3rd Guidelines on Dyslipidemia of Brazilian Society of Cardiology), in a low income population. To determine whether there was a difference of that percentage in high risk patients, according to their age (<75 years old vs. >75 years old). METHODS: We analyzed, consecutively, 190 patients, divided in two groups: 51 low and middle risk patients (G I) and 139 high risk patients for coronaray artery disease (G II). The sample was characterized by low income patients (69% for the patients had a family income between 1 and 2 minimum salaries), whose hypolipidemic therapy was irregularly supplied by the State. RESULTS: G I and G II showed, respectively, 70.1±13.7 years old and 13.7% of men and 68.5±10.6 years old and 62.6% of men. Among patients from G II, 30% showed LDL-cholesterol within the preconized objectives. The frequency of patients suitable to the objectives was significantly lower in individuals with 75 years of age or older than among those younger than 75 years old (16% vs. 30%, p=0.04). CONCLUSION: In a predominantly low income population and without continuous assistance from the State to purchase statins, the achievement of preconized objectives for LDL-cholesterol, by 3rd Guidelines on Dyslipidemia of Brasilian Society of Cardiology, is low and also significantly lower among very old patients, with a high risk profile for atherosclerosis.

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