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Study on Site Preparation and Restoration Techniques for Forest Restoration in Mining Tailings of Mariana,Brazil

Research in Ecology 2020年第4期2卷 42-52页

作者： Sebastião Venâncio martins pedro Manuel Villa Fabio Haruki Nabeta Leonardo Ferreira da Silva Gabriel Correa Kruschewsky Andreia Aparecida Dias Forest Restoration Laboratory Department of Forest EngineeringUniversidade Federal de ViçosaViçosaMinas GeraisBrazil Fundação Renova Belo HorizonteMGBrazil

Ecological restoration in forest ecosystem is a priority in Mariana,***,we evaluated the effects of passive and active restoration methods through different site preparation techniques by manipulating physical-chemical properties of substrates on tree community coverage in Mariana,Brazil.A total of 48 plots(12×12 m each)were established in two areas along the flood plains with accumulation of *** following treatments were established:(1)planting of native tree seedlings with fertilization(PSf)and(2)without fertilization(PS);(3)direct seeding of native trees with fertilization(SDf)and(4)without fertilization(SD);(5)natural regeneration with fertilization(NRf)and(6)without fertilization(NR).Differences in substrate properties and tree community coverage were evaluated between treatments,the substrate properties and tree community coverage relationship,and main effects of substrate fertility and texture on tree community *** were marked differences in substrate and plant coverage between *** average,the highest plant coverage was found in treatment with fertilization,such as NRf(59,5%)and SDf(48%).However,the treatment with seedling planting(PSf and PS)and NR did not show differences(~37%),while the lowest values were observed in SD(23%).There is a strong relationship between substrate fertility and plant community coverage,with significant positive *** observed that the passive and active restoration methods can be complementary in the soil and plant community coverage recovery.

关键词： Seeding Fundão dam Natural regeneration Seeding Seedlings Resilient mitigation Site effects

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Study of the Addition Effect of Glycerin Originated from Biodiesel Production at Compressive Strengh of Concrete

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Journal of Environmental Science and Engineering(A) 2020年第3期9卷 113-118页

作者： Matheus Alves Lima daSilva Alan Carlos de Almeida Brenda Fernandes deFreitas pedro Luís Millen Penedo Sandro Pereira Ribeiro GustavoJoséda CostaGomes Mayara Lisboa Santos Adriana Lau da Silva martins Cristiane de Souza Siqueira Pereira Universidade de Vassouras VassourasRio de Janeiro 27700-000Brazil Institute of Technical Culture Volta RedondaRio de Janeiro 27251-220Brazil Department of Engineering University Center Geraldo Di BiaseBarra do PiraíRio de Janeiro 27600-000Brazil

The residues generated by big industries are directly and gradually impacting the environment,and some of these have not been fully tapped in a proper ***,some researches and studies about minimalizing the residue’s disposal become *** biodiesel industries have been producing increasingly glycerin as the main *** on that,it is considered as a good option of the reutilization of this material,for example,the merging at the concrete’s *** this argument,the addition’s effects of glycerin were evaluated as well as the influence of its adding at the compressive *** proof-bodies were formulated according to the trace in proportion of 1:1:2(cement,sand and gravel,respectively)and 0.4 L of glycerin added at the final *** the bases of the survey results,it was verified that the proof-bodies without the addition of glycerin presented average mechanical resistance of 12.2±1.95 MPa after twenty eight(28)days of curing,and mechanical resistance of the proof-bodies with the addition achieved resistance of 26.2±1.62 MPa,suggesting influence on the hydration kinetics of the concrete.

关键词： Glycerin cement biodiesel

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Thyroid Nodule: Alpha Score 2.0 Classification for FNAB Selection, Multicentric Study in Latin America

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Open Journal of Radiology 2021年第4期11卷 160-174页

作者： Glenn Mena Maria Cristina Chammas Carlos Mario Gonzalez Vasquez Lylian Rocío Villagómez Marco Alfredo Muñoz Pico Patricio Alejandro Montalvo Santiago Mena-Bucheli Julio Olmedo Elizabeth Quintero pedro Henrique de Marqui Moraes Osmar Cassio Saito Hubertino Diaz Denise Romero Gabriela Velalcazar Angel Ramón Sosa Fleitas Yamil Oliver Quevedo Ontaneda Victor Ricardo Chara Alpha Imagen Radiología e Intervencionismo Quito Ecuador Hospital das Clínicas Faculdade de Medicina da Universidade de Sã o Paulo S&#227 o Paulo Brasil Hospital Pablo Tobón Uribe Medellin Colombia Hospital del Instituto Ecuatoriano de Seguridad Social Quito Sur Quito Ecuador Hospital San Francisco de Quito Quito Ecuador Hospital Edgardo Rebagliati martins Lima Perú Hospital Carlos Andrade Marín Quito Ecuador Hospital de Clínicas San José de San Martín Buenos Aires Argentina Hospital Universitario de Los Andes Mérida Venezuela Hospital de la Policía Quito Ecuador Hospital Sisol Tacna Perú

Introduction: To perform a Latin-American multicentric study for the prediction of benign and malignant thyroid nodules using Alpha Score, and to compare it with ACR TIRADS® and Bethesda®. Materials and Methods: A prospective multicentric study in 10 radiological hospitals and institutions of Latin America was performed and 818 thyroid nodules were analyzed by ultrasound and classified by using both ACR TIRADS® and Alpha Score;fine-needle aspiration biopsy was performed when needed and classified with Bethesda. The relationships between predictors were analyzed by using binary logistic regression, statistical significance was defined by a p-value of 0.05, with an error margin of 4% and 95% confidence intervals. Results: Alpha Score 2.0 establishes five types of malignant predictors: microcalcifications, irregular borders, taller-than-wide shape, predominant solid texture and hypoechogenicity;a diameter equal to or greater than 1.5 cm adds an extra point to the final score. Resulting classification divides TNs into 4 categories: benign (1.9%), low suspicion (8.7%), mild suspicion (13.6%) and high suspicion (75.7%) of malignancy probability;sensitivity of 82%, specificity of 74%, the positive predictive value of 94%, the negative predictive value of 51%, the statistical accuracy of 81%, odds ratio of 108.89 and correlation with ACR TIRADS of 0.77 and Bethesda of 0.91. Conclusions: Alpha Score 2.0 has superior diagnostic accuracy and performance compared to the previously published Alpha Score and is able to classify a benign TN in a precise, safe and accurate way, avoiding unnecessary FNABs or determining the necessity of FNAB in cases of moderate to high suspicion of malignancy.

关键词： Thyroid Cancer-Clinical Radiology-Imaging Thyroid Nodule Alpha Score TIRADS® Thyroid Ultrasonography

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