Search | SciELO

Need help?

Add field +

Search history

No documents were found for your search

Results: 24

au:SANTOS, RAFAEL O. DOS

Filters

Collection + Options

All
Brazil

23
Cuba

1

Journal + Options

All
Revista Brasileira de Engenharia Agrícola e Ambiental

4
Anais da Academia Brasileira de Ciências

3
Ocean and Coastal Research

2
Pesquisa Veterinária Brasileira

2
Archives of Endocrinology and Metabolism

1
Arquivos Brasileiros de Cardiologia

1
Biota Neotropica

1
Clinics

1
Journal of the Brazilian Chemical Society

1
Materials Research

1
Neotropical Ichthyology

1
Pesquisa Operacional

1
Revista Brasileira de Farmacognosia

1
Revista Brasileira de Parasitologia Veterinária

1
Revista Caatinga

1

Show all...

Language

All
Portuguese

3

Publication Year + Options

All
2018

4
2023

4
2019

3
2020

3
2021

3
2011

2
2015

2
2022

2
2013

1

SciELO Thematic Areas + Options

All
Agricultural Sciences

7
Health Sciences

5
Biological Sciences

4
Exact and Earth Sciences

3
Multidisciplinary

3
Engineering

2

WoS Subject Categories + Options

All
Sciences

12
Engineering

5
Multidisciplinary

5
Agricultural

4
Environmental

4
Veterinary

4
Science

3
General

2
Internal

2
Medicine

2
Oceanography

2
Agriculture

1
Agronomy

1
Animal

1
Biodiversity

1

Show all...

WoS Citation Index + Options

All
Science Citation Index Expanded

11
Social Sciences Citation Index

3

Citables and non citables

All
Citable

24

Type of Literature + Options

All
Article

22
Brief report

1
Case report

1

Order by

Page of 2 Next

Select this page

Print | Send to email | Export |

Facebook
Twitter
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

0 Selected itens

List all
Erase all

Mapping Native Seed Banks of Communities in Piemonte Norte do Itapicuru, Bahia, Brazil
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Santos, Naara de C. S.

; Trocoli, Rafael O.

; Pereira, Monica A. T.

Revista Caatinga

Journal Metrics
- Sobre o periódico
- SciELO Analytics

sep 2023, Volume 36 N. 3 Pages 524 - 531

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

ABSTRACT Native Seed Banks of Communities (SBC) are one of the important social technologies that enables the coexistence with the climate in the Semiarid region of Brazil. These banks can supply appropriate seeds due to the genetic improvement carried out by farmers over generations, in addition to the traditional knowledge associated with them. The poor water distribution in part of the states in the Northeast region of Brazil makes family farmers to depend on rainfall and adapted seeds to grow viable crops. In this sense, native seeds are the most suitable due to their robustness and ideal adaptation to the environment and cultivation systems used in the region. Moreover, the conservation of native seeds in germplasm banks is an important strategy for minimizing the impacts of conventional agriculture. Thus, the objective of this study was to map seed banks of communities within the Piemonte Norte do Itapicuru Territory, state of Bahia, Brazil. The research was carried out during the COVID-19 pandemic and presented a qualitative character through a study case methodology. The steps for data collection were: identification of SBC through information from technical advisory entities; georeferencing of the SBC locations; and description of SBC specificities. Eight seed banks were mapped, distributed in three municipalities: Antonio Gonçalves, Campo Formoso, and Pindobaçu. Although the territory is composed of nine municipalities, six of them do not have this technology.

RESUMO O uso de Bancos Comunitários de Sementes (BCS) crioulas constitui-se como uma das importantes tecnologias sociais determinantes para a convivência com o semiárido. Tal estratégia apoia-se no fato de que, tais bancos possibilitam a oferta de sementes apropriadas, em virtude da seleção realizada pelos agricultores ao longo de gerações, bem como de todo conhecimento tradicional associado. Considerando a má distribuição hídrica que acomete em parte dos estados da Região Nordeste do Brasil, os agricultores familiares dependem das chuvas, bem como de sementes adaptadas para viabilizar seus cultivos. Nesse cenário, em razão da rusticidade, as sementes crioulas, são as mais adequadas, pois elas são perfeitamente adaptadas ao clima e ao sistema de cultivo utilizado. Diante dessa problemática, visando minimizar os impactos ocasionados pela agricultura convencional, a citar: a redução da agrobiodiversidade, disponibilidade de sementes no momento adequado para a semeadura, uma das estratégias adotadas é a conservação do germoplasma em bancos ou casa de sementes. O presente estudo teve como objetivo mapear os Bancos Comunitários de Sementes no Território de Identidade Piemonte Norte do Itapicuru, localizado no estado da Bahia. A pesquisa foi realizada durante a pandemia da COVID-19 e apresentou caráter qualitativo, sendo utilizada como metodologia de investigação o estudo de caso. A coleta de dados foi realizada em três etapas e como resultado, foram mapeados oito bancos, distribuídos em três municípios sendo estes: Antônio Gonçalves, Campo Formoso e Pindobaçu. Apesar de o território ser composto por nove municípios percebe-se que seis destes não utilizam essa tecnologia.

https://doi.org/10.1590/1983-21252023v36n305rc

Fructosamine and glycated hemoglobin as biomarkers of glycemic control in people with type 2 diabetes mellitus and cancer (GlicoOnco study)
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Toyoshima, Marcos Tadashi Kakitani

; Cukier, Priscilla

; Damascena, Aline Santos

; Batista, Rafael Loch

; Correa, Fernanda de Azevedo

; Kawahara, Eduardo Zanatta

; Minanni, Carlos André

; Hoff, Ana O.

; Nery, Marcia

Clinics

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2023, Volume 78 elocation 100240

Abstract: En | Text: En | PDF: En

Abstract Introduction Glycemic control is important to avoid diabetes complications in individuals with cancer. There is no evidence for HbA1c and fructosamine as reliable biomarkers in these conditions. There are particularities in caring for patients with diabetes and cancer that can alter these biomarkers. Objective The aim of this study was to evaluate HbA1c and fructosamine as glycemic biomarkers in people with type 2 diabetes and cancer, undergoing clinical or surgical oncological treatment. Methods The authors conducted a single-center, retrospective analysis with people who have cancer and diabetes. Comparison of glycemic biomarkers (HbA1c, fructosamine, and Self-Monitoring of Blood Glucose [SMBG]) was performed including evaluation in individuals undergoing chemotherapy, using glucocorticoids, with anemia, hypoproteinemia or with reduced estimated Glomerular Filtration Rate (eGFR). Results There was a strong positive correlation between fructosamine and HbA1c (n = 318, r= 0.66, p < 0.001) in people with diabetes and cancer even in those under chemotherapy (n = 101, r= 0.61, p < 0.001) or using glucocorticoids (n = 96, r= 0.67, p<0.001). There was a strong correlation between HbA1c and fructosamine in subjects with anemia (n = 111, r= 0.66, p < 0.001), hypoproteinemia (n = 54, r= 0.67, p < 0.001), or with eGFR ≥ 60 mL/min/1.73 m2 (n = 189, r= 0.70, p < 0.001), and moderate correlation with hypoalbuminemia (n = 21, r= 0.54, p = 0.001) and with reduced eGFR (n = 67, r= 0.57, p < 0.001). The correlations between fructosamine and HbA1c with SMBG were moderate (n = 164, r= 0.49, p < 0.001; n = 111, r= 0.55, p < 0.001, respectively), strong in subjects undergoing chemotherapy, with hypoalbuminemia or hypoproteinemia, and at least moderate, if eGFR < 60 mL/min/1.73 m2 or with anemia. Conclusions Fructosamine and HbA1c can be used as glycemic biomarkers in people with diabetes and cancer, even in those with anemia, hypoproteinemia, or undergoing chemotherapy.

https://doi.org/10.1016/j.clinsp.2023.100240

Deep sea ecosystem exploration and ‘health check’: sampling strategy and methods applied during the iAtlantic_BR10_Petrobras cruise in the Santos Basin, Southwest Atlantic
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Perez, Jose Angel A.

; Barros Neto, Halésio M.C. de

; Arantes, Renata C.M.

; Gaurisas, Daniela Y.

; Silva, Camila F.

; Alves, Fernanda Maria M.

; Costa, Júlia A.

; Eloi, Paula D.C.

; Fonseca, Thayse S.

; Gavazzoni, Lucas

; Lonskis, Isabella da S.

; Nardi, Ricardo U.

; Nascimento, Pedro O.

; Rodrigues, João Vitor M.

; Santos, Ana Lara F. dos

; Santos, Edson C. dos

; Schroeder, Rafael

; Silva, Luis Carlos da

; Souza, Fernanda dos S.S. de

; Bernardino, Ângelo F.

; Cavalcanti, Guarani H.

; Lindner, Alberto

; Mahiques, Michel M. de

; Millo, Christian

; Reis, Priscila

; Sweetman, Andrew K.

; Roberts, J. Murray

Ocean and Coastal Research

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2023, Volume 71 elocation e23046

Abstract: En | Text: En | PDF: En

Abstract The iAtlantic Project has established an international collaborative strategy to improve mapping and characterization of deep and open ocean ecosystems in understudied regions of the Atlantic and evaluate their health. In December 2022, the first iAtlantic expedition in the South Atlantic set off to map and explore seafloor ecosystems in the Santos Basin slope (200-1,000 m depths) in collaboration with the Petrobras ‘Santos Basin - Regional Characterization Project.’ The 17-day ‘iAtlantic_BR10-Petrobras’ cruise was conducted on board the research vessel NPqHOc Vital de Oliveira (Brazilian Navy) and performed (a) water column structure characterization, (b) seafloor morphology mapping, (c) description of benthic habitats and communities by seafloor imagery and biological/ geological sampling, and (d) ex-situ experiments to assess the functioning of sedimentary ecosystems and their responses to climate-related environmental changes. This study describes the rationale behind the iAtlantic_BR10-Petrobras cruise science plan, reports its sampling strategy and methods, and summarizes its collected data and preliminary results.

https://doi.org/10.1590/2675-2824071.23069jaap

Multidisciplinary Scientific Cruises for Environmental Characterization in the Santos Basin – Methods and Sampling Design
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Moreira, Daniel L.

; Dalto, Adriana G.

; Figueiredo JR, Alberto G.

; Valerio, Aline M.

; Detoni, Amalia M. S.

; Bonecker, Ana C. T.

; Signori, Camila N.

; Namiki, Cláudia

; Sasaki, Dalton K.

; Pupo, Daniel V.

; Silva, Danilo A.

; Kutner, Deborah S.

; Duque-Castaño, Diana C.

; Marcon, Eduardo H.

; Gallotta, Fabiana D. C.

; Paula, Fabiana S.

; Gallucci, Fabiane

; Roque, Gabriela C. F.

; Campos, Giulia S.

; Fonseca, Gustavo

; Mattos, Gustavo

; Lavrado, Helena P.

; Silveira, Ilson C. A. da

; Costa, Jessica O.

; Santos Filho, João R. dos

; Carneiro, Juliane C.

; Moreira, Julio C.F.

; Rozo, Laura

; Araujo, Leandro F.M.

; Lazzari, Letícia

; Silva, Letícia O. da

; Michelazzo, Luan S.

; Fernandes, Luciano F.

; Dottori, Marcelo

; Araújo Jr., Marcus A. G. de

; Chuqui, Mateus G.

; Ceccopieri, Milena

; Borges-Silva, Milton

; Kampel, Milton

; Bergo, Natascha M.

; Silva, Paulo V. M.

; Tura, Pedro M.

; Moura, Rafael B. de

; Romano, Renato G.

; Martins, Renato P.

; Carreira, Renato S.

; Toledo, Rodrigo G.A.

; Bonecker, Sérgio L.C.

; Disaró, Sibelle T.

; Rodrigues, Silvana V.

; Corbisier, Thais N.

; Vicente, Thaisa M.

; Paiva, Vitor G. de

; Pellizari, Vivian H.

; Belo, Wellington C.

; Brandini, Frederico P.

; Sousa, Silvia H.M

Ocean and Coastal Research

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2023, Volume 71 Suppl. 3 elocation e23022

Abstract: En | Text: En | PDF: En

Abstract The Santos Basin (SB) is the main petroliferous basin in the Brazilian continental margin and one of the most studied marine areas in Brazil. However, historical data suggest that new efforts should be carried out to acquire quantitative biological data, especially in the deep sea, to establish the baseline of essential ocean variables in different ecosystems for future monitoring programs. The Brazilian energy company Petrobras planned and executed 24 oceanographic cruises over a period of 2 years to assess the benthic (SANSED cruise) and pelagic (SANAGU cruise) systems of the SB (356 days at sea in 2019 and 2021/2022). These efforts were part of the Santos Project, which comprised a comprehensive environmental study aimed at investigating benthic and pelagic variables to characterize ecology, biogeochemistry, thermohaline properties of water masses, and ocean circulation patterns, geomorphology, and sedimentology, as well as organic and inorganic chemistry. Here we present the detailed sampling designs and the field methods employed on board, during the SB scientific cruises. All sampling protocols were based on standardized approaches. For the benthos analyses, triplicate sediment samples were performed using a GOMEX-type box corer (0.25 m²) or a large modified Van Veen grab (0.75 m²) at 100 stations ranging from 25 to 2400 m depth. At each station, 25 geochemical and physico-chemical parameters were analyzed in addition to micro-, meio-, and macrofauna and living foraminifera samples. For the pelagic system, 60 stations were selected to investigate the plankton community, ranging in size from pico- to macroplankton, through vertical, horizontal, and oblique net hauls (20, 200, and 500 μm mesh size), as well as 25 biogeochemical parameters collected with an aid of a CTD-rosette sampler. Part of this scientific information also serves the Regional Environmental Characterization Project (PCR-BS) in support of Petrobras’ Santos Basin drilling licensing process led by the Brazilian Environmental Agency – IBAMA. This project contributes to the sustainable development of the SB, in line with the guidelines of the United Nations Decade of Ocean Science for Sustainable Development.

https://doi.org/10.1590/2675-2824071.22072dlm

Anthelmintic efficacy of oxibendazole against gastrointestinal nematodes in swine
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Mendonça, Rafael Paranhos de

; Carneiro, Daniela Oliveira

; Baccin, Eliane Marucci

; Pirágine, Márcia Richena

; Zoca, Sara Menegatti

; Rossa, Luis Augusto Ferreira

; Lima, Guilherme Cecílio

; Oliveira, Francismar Barbosa de

; Costa, Istanlei Soares

; Oliveira, Gabriel Nunes de

; Nogueira, Sabrina Nathália Louzada

; Santos-Doni, Thaís Rabelo dos

Revista Brasileira de Parasitologia Veterinária

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2022, Volume 31 N. 1 elocation e018321

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

Resumo A presença de parasitoses na suinocultura gera prejuízos econômicos relevantes. Dentre elas, destacam-se as helmintoses gastrintestinais. Sendo assim, medidas de controle efetivas, tais como o uso de anti-helmínticos corretos, são importantes para a lucratividade na criação de suínos. O presente estudo teve como objetivo avaliar a eficácia do oxibendazol, administrado pela via oral, em suínos (não industrial) naturalmente infectados por nematódeos gastrintestinais, na região de Franca/SP. Para isso, foram selecionados, por meio de exames coproparasitológicos (ovos por grama (OPG > 500) de fezes), 18 suínos naturalmente parasitados por nematódeos gastrintestinais, que foram divididos em dois grupos experimentais: grupo tratado (oxibendazol) e grupo controle. Após o tratamento, os animais foram submetidos à necropsia parasitológica, e os resultados das quantificações de helmintos presentes no trato gastrintestinais indicaram a presença das espécies Ascaris suum, Trichuris suis, Oesophagostomum dentatum e Hyostrongylus rubidus em ordem decrescente de ocorrência. Nos rebanhos suínos brasileiros, os sistemas de produção não tecnificadas podem favorecer a transmissão de helmintos. O tratamento com o oxibendazol obteve eficácia de 100% para as espécies A. suum e H. rubidus, de 99,65% para o O. dentatum e de 99,20% para o T. suis, reduzindo significativamente (P < 0,01) as contagens de helmintos, comprovando que o uso do oxibendazol é eficaz no controle dos principais helmintos de suínos.

Abstract In swine production, parasites, especially gastrointestinal helminths, generate considerable economic losses. Therefore, effective control measures, such as the use of the correct anthelmintics, are of paramount importance for maintaining profitability. The aim of the present study was to evaluate the efficacy of the anthelmintic oxibendazole, administered orally, in pigs (non-industrial) naturally infected with gastrointestinal nematodes. To that end, we selected 18 pigs naturally parasitized by gastrointestinal nematodes, as determined by examination of fecal samples (eggs per gram (EPG > 500) of feces), and divided them into two groups: treated (with a 10-day course of oxibendazole) and control (untreated). After the treatment period, the animals were euthanized. During necropsy, the helminths in the gastrointestinal tract were identified and quantified. The species identified were, in order of occurrence, Ascaris suum, Trichuris suis, Oesophagostomum dentatum, and Hyostrongylus rubidus. In Brazilian swine herds, traditional (non-industrial) production systems can favor the transmission of helminths. We found that treatment with oxibendazole was 100% effective against A. suum and H. rubidus, whereas it was 99.65% effective against O. dentatum and 99.20% effective against T. suis, significantly reducing helminth counts (P < 0.01 for all). We conclude that oxibendazole is effective in controlling the main helminths in swine.

https://doi.org/10.1590/s1984-29612022009

The use of Enzymes in Meat Quail Diets Containing Sunflower Seed Cake
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

CORDEIRO, CARLA N.

; FREITAS, EDNARDO R.

; NEPOMUCENO, RAFAEL C.

; PINHEIRO, SARAH G.

; SOUZA, DAVYD H.

; SANTOS, EDIBERGUE O.

; MELO, MARCELLE C.A. DE

; SILVA, ANNA KAYLLYNY O.

; NASCIMENTO, GERMANO A.J. DO

Anais da Academia Brasileira de Ciências

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2022, Volume 94 N. 4 elocation e20200138

Abstract: En | Text: En | PDF: En

Abstract We examined the effects of including sunflower cake (SC) associated with an enzyme complex (EC) in the diet of meat quails on nutrient metabolism, performance, carcass characteristics, bone parameters and economic viability. In total, 432 meat quails (7 to 42 days old) were assigned to six treatments in a completely randomised design with 6 replicates with 12 birds each. A 2 × 3 factorial arrangement was adopted (two levels of SC: 10 and 20%; three diet formulation strategies: normal, reduction in the nutrient and energy matrix considering the enzymatic contribution and reduced diet with EC). No interaction effect was observed. The increased levels of SC from 10% to 20% promoted in decrease in the metabolisability coefficients of dry matter and gross energy and in the value of AMEn and increased relative weight of gizzard. The addition of EC in diets containing SC allows a better metabolization of nitrogen and energy, equalize to the normal diet. The best breast yield was obtained in the birds fed the reduced diet with EC, in relation to normal diet. The reduced diet and the reduced diet with EC provided the lowest cost of food and the best economic efficiency index. Up to 20% of the sunflower cake can be included in the diet of cut quail, with or without enzyme supplementation. However, the use of the enzyme complex composed of carbohydrases, proteases and phytase can favor the metabolization of nitrogen and energy from the diet containing sunflower cake.

https://doi.org/10.1590/0001-3765202220200138

Choosing Wisely for Thyroid Conditions: Recommendations of the Thyroid Department of the Brazilian Society of Endocrinology and Metabolism
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Dora, Jose Miguel

; Biscolla, Rosa Paula Mello

; Caldas, Gustavo

; Cerutti, Janete

; Graf, Hans

; Hoff, Ana O.

; Mazeto, Glaucia M. F. S.

; Magalhães, Patrícia Kunzle Ribeiro

; Mesa Junior, Cleo Otaviano

; Scheffel, Rafael Selbach

; Teixeira, Patricia de Fatima dos Santos

; Vaisman, Fernanda

; Villagelin, Danilo

; Maia, Ana Luiza

Archives of Endocrinology and Metabolism

Journal Metrics
- Sobre o periódico
- SciELO Analytics

apr 2021, Volume 65 N. 2 Pages 248 - 252

Abstract: En | Text: En | PDF: En

ABSTRACT Objective: Choosing Wisely (CW) is an initiative that aims to advance the dialogue between physicians and patients about low-value health interventions. Given that thyroid conditions are frequent in clinical practice, we aimed to develop an evidence-based list of thyroid CW recommendations. Materials and methods: The Thyroid Department of the Brazilian Society of Endocrinology and Metabolism (SBEM) named a Task Force to conduct the initiative. The Task Force work was based on an electronic Delphi approach. The 10 recommendations that received the highest scores by the Task Force were submitted for voting by all SBEM associates. The 5 recommendations that received the highest scores by SBEM associates are presented herein. Results: The Task Force was composed of 14 thyroidologists from 10 tertiary-care, teaching-based Brazilian institutions. The brainstorming/ideation phase resulted in 69 recommendations. After the removal of duplicates and recommendations that did not adhere to the initiative's scope, 35 remained. Then the Task Force voted to attribute a grade (0 [lowest agreement] to 10 [highest agreement]) for each recommendation. The 10 recommendations that received the highest scores by the Task Force were submitted to all SBEM associates. A total of 683 associates voted electronically, attributing a grade (0 to 10) for each recommendation. The 5 recommendations that received the highest scores by the SBEM associates compose our final list. Conclusion: A set of recommendations to avoid unnecessary medical tests, treatments, or procedures for thyroid conditions are offered with a transparent methodology. This initiative aims to foster productive interactions between physicians and patients, stimulating shared decision-making.

https://doi.org/10.20945/2359-3997000000323 340 downloads

HORIZON-OPTIMIZED WEIGHTS FOR FORECAST COMBINATION WITH CROSS-LEARNING
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Valle dos Santos, Rafael de O.

; Araujo F., Celso F.

; Accioly, Ricardo M. S.

; Oliveira, Fernando Luiz Cyrino

Pesquisa Operacional

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2021, Volume 41 elocation e245564

Abstract: En | Text: En | PDF: En

ABSTRACT Recent empirical results show that forecast combinations and cross-learning schemes are winning approaches in the time series field. Although many competition-winning combination methods - with cross-learning or not - use static weights along the forecasting horizon, we could not find extensive work about the effects of using horizon-optimized weights. This paper proposes a forecast combination framework and provides a considerably sizeable empirical investigation into the use of horizon-optimized weights, i.e., weights that may vary over the forecasting horizon. We build on cross-learning, time series clustering and cross-validation to form Horizon-Optimized Convex Combinations (HOC2) of forecasts from five methods: Automated exponential smoothing, Automated ARIMA, Theta, TBATS, and Seasonal naïve. Our combinations were tested with data from the previous M1, M3 and M4 forecast competitions, comprising 104,004 time series with different frequencies and lengths. The results shall be helpful to support future research on how horizon-optimized weights can be used interchangeably with static ones.

https://doi.org/10.1590/0101-7438.2021.041.00245564

Synthesis and Characterization of Cu2-xS structures by Different Chemical Routes for Electronic Applications
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Lima, João V. M.

; Silva, Rafael A.

; Santos, Stevan B. O.

; Graeff, Carlos F. O.

; Scalvi, Luis V. A.

Materials Research

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2021, Volume 24 elocation e20210018

Abstract: En | Text: En | PDF: En

Abstract Copper sulfides are materials with different technological applications due to different possibilities of phases, which result in different properties. Thus, obtaining particles with different stoichiometry of the materials is of great interest. Two simple chemical routes were used to obtain copper sulfides (Cu2-xS) particles of different phases and stoichiometry. One of the obtained powders was used for thin film deposition through resistive evaporation and characterized. From scanning electron microscopy the particle size was found as around 500 nm. The second route leads to non-stoichiometric powder with characteristic CuS, Cu9S5 and Cu2S planes detected in the XRD diffractograms. Thin films from this route were also obtained by resistive evaporation. The amorphous film obtained after evaporation was submitted to thermal annealing at 200 ° C/2h, becoming semi-crystalline. The deposited film showed good adhesion to the substrate and low roughness, in addition to a bandgap of 2.5 ± 0.1 eV and a resistivity of 1x10-2 Ω.cm, values in good agreement with those reported in the literature. The techniques used here proved to be of good quality for deposition of copper sulfide films, and can be used as a simpler alternative in addition to commonly used for deposition of copper sulfide films.

https://doi.org/10.1590/1980-5373-mr-2021-0018 95 downloads

10.

Frequência e Motivos para a não Administração e Suspensão de Medicamentos durante um Evento de Síndrome Coronariana Aguda. Estudo ERICO
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Santos, Rafael C. O.

; Bensenor, Isabela M.

; Goulart, Alessandra C.

; Lotufo, Paulo A.

; Santos, Itamar S.

Arquivos Brasileiros de Cardiologia

Journal Metrics
- Sobre o periódico
- SciELO Analytics

nov 2020, Volume 115 N. 5 Pages 830 - 839

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

Resumo Fundamentos: Poucos estudos discutiram causas para o subtratamento medicamentoso na SCA. Objetivos: Avaliar a não-administração e suspensão de medicamentos durante o tratamento intra-hospitalar da SCA na Estratégia de Registro de Síndrome Coronariana Aguda (estudo ERICO). Métodos: Analisamos prontuários de 563 participantes ERICO para avaliar a frequência e motivos da não administração e/ou suspensão de medicamentos. Construímos modelos de regressão logística para avaliar se sexo, idade ≥65 anos, nível educacional ou subtipo de SCA estavam associados com (a) não administração de ≥1 medicamentos; e (b) não administração ou suspensão de ≥1 medicamentos. O nível de significância foi 5%. Resultados: A amostra é composta por 58,1% de homens e com idade mediana de 62 anos. Em 183 (32,5%) participantes ≥1 medicamentos não foram administrados e 288 (51,2%) apresentaram ≥1 medicamentos não administrados ou suspensos. As causas mais frequentes foram risco de sangramento (aspirina, clopidogrel e heparina), insuficiência cardíaca (betabloqueadores) e hipotensão (inibidores da enzima conversora da angiotensina e bloqueadores dos receptores da angiotensina). Indivíduos com idade ≥65 anos (razão de chances [RC]:1,51; intervalo de confiança de 95% [IC95%]:1,05-2,19) e com angina instável (RC:1,72; IC95%:1,07-2,75) tiveram maior chance de não-administração. Considerando apenas pacientes com infarto do miocárdio, idade ≥65 anos foi associada tanto à não administração quanto à não administração ou suspensão. Conclusões: A não administração ou suspensão de ≥1 medicamento não foi rara no estudo ERICO. Indivíduos com idade ≥65 anos ou com angina instável tiveram maior chance de não administração e podem ser subtratados nesse cenário.

Abstract Background: Few studies have discussed the reasons for pharmacological undertreatment of Acute Coronary Syndrome (ACS). Objectives: To determine the frequency and reasons for the non-administration and suspension of medications during in-hospital treatments of ACS in the Strategy of Registry of Acute Coronary Syndrome (ERICO) study. Methods: The present study analyzed the medical charts of the 563 participants in the ERICO study to evaluate the frequency and reasons for the non-administration and/or suspension of medications. Logistic regression models were built to analyze if sex, age ≥65 years of age, educational level, or ACS subtype were associated with (a) the non-administration of ≥1 medications; and (b) the non-administration or suspension of ≥1 medications. The significance level was set at 5%. Results: This study's sample included 58.1% males, with a median of 62 years of age. In 183 (32.5%) participants, ≥1 medications were not administered, while in 288 (51.2%), ≥1 medications were not administered or were suspended. The most common reasons were the risk of bleeding (aspirin, clopidogrel, and heparin), heart failure (beta blockers), and hypotension (angiotensin-converting enzyme inhibitors and angiotensin receptor blockers). Individuals aged ≥65 (odds ratio [OR]:1.51; 95% confidence interval [95% CI]:1.05-2.19) and those with unstable angina (OR:1.72; 95% CI:1.07-2.75) showed a higher probability for the non-administration of ≥1 medication. Considering only patients with myocardial infarction, being ≥65 years of age was associated with both the non-administration and the non-administration or suspension of ≥1 medication. Conclusions: Non-administration or suspension of ≥1 medication proved to be common in this ERICO study. Individuals of ≥65 years of age or with unstable angina showed a higher probability of the non-administration of ≥1 medication and may be undertreated in this scenario. (Arq Bras Cardiol. 2020; 115(5):830-839)

https://doi.org/10.36660/abc.20190317 630 downloads

11.

Use of linear programming for decision making: An analysis of cost, time and comfort of rural housing dwellings
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Lovatto, Juliano

; Santos, Rodrigo C.

; Souza, Cristiano M. A. de

; Zucca, Rafael

; Lovatto, Felipo

; Geisenhoff, Luciano O.

Revista Brasileira de Engenharia Agrícola e Ambiental

Journal Metrics
- Sobre o periódico
- SciELO Analytics

sep 2020, Volume 24 N. 9 Pages 622 - 629

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

RESUMO A produção agrícola brasileira demanda novas construções rurais, mais sustentáveis, econômicas e adaptadas ao clima. Além disto, estas construções deixaram de ser simples alojamentos, mas também uma forma de valorização dos trabalhadores rurais. Portanto, o objetivo deste estudo foi a criação de um modelo de programação linear de otimização para auxiliar a tomada de decisão na combinação de diferentes técnicas e materiais construtivos, visando avaliar combinações de custo e conforto para unidades habitacionais rurais. O estudo utilizou a problemática de localização de instalações em redes, para através de analogias adaptar uma matriz orçamentária, aplicando três critérios de escolha, sendo custo, tempo de execução e condições de conforto ambiental proporcionado. O modelo foi composto por seis sistemas construtivos, três tipos de alvenaria de fechamento, dois tipos de estrutura de cobertura e quatro tipos de telhas. Foram realizadas simulações para dois Estados brasileiros, com a mesma data base para validação e comparação. Cada variável de entrada resultou em um modelo construtivo diferente. Verificou-se viabilidade de novas tecnologias construtivas baseadas na industrialização, por possuirem agilidade de execução, preços competitivos e matéria-prima sustentável, e na combinação dos critérios ao sistema tradicional de concreto armado. A programação linear permitiu ao usuário atender suas necessidades sobre tomadas de decisão do sistema construtivo, otimizando tempo e recurso.

ABSTRACT Brazilian agriculture production requires new types of rural buildings that are more sustainable, economical, and well adapted to their environment. Furthermore, these buildings are no longer simple living quarters, but a way of valuing rural workers. Thus, this study aimed to create a linear programming model for optimizing decision-making when different techniques and construction materials are combined to build rural housing dwellings, thereby enabling an assessment of both the cost and comfort of such buildings. The research considered localizing network facilities via analogies in order to adapt a budget matrix. Three main criteria were applied: cost, runtime, and the environmental comfort provided. The model comprised six construction systems, three types of sealing masonry, two types of roofing, and four types of tiles. Simulations were performed for two Brazilian states, considering the same reference date of validation and comparison. Each input variable resulted in a different construction model. It was demonstrated that the new industrialized construction technologies are advantageous since they provide faster execution, competitive prices, and sustainable raw materials, whilst the application of the criteria to the traditional system of reinforced concrete is also feasible. The linear programming model offers its users an additional decision-making tool for construction systems, enabling time and resource optimization.

https://doi.org/10.1590/1807-1929/agriambi.v24n9p622-629 678 downloads

12.

Enthalpy thematic map interpolated with spline method for management of broiler chicken production
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Silva, Natália C. da

; Santos, Rodrigo C.

; Zucca, Rafael

; Geisenhoff, Luciano O.

; Cesca, Rafaela S.

; Lovatto, Juliano

Revista Brasileira de Engenharia Agrícola e Ambiental

Journal Metrics
- Sobre o periódico
- SciELO Analytics

jul 2020, Volume 24 N. 7 Pages 431 - 436

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

RESUMO Devido ao aumento exponencial da população humana e aos problemas relacionados ao suprimento de alimentos, destacam-se pesquisas que buscam encontrar a melhor maneira de gerenciar e explorar geograficamente o meio ambiente, utilizando tecnologias sustentáveis. Este estudo visa possibilitar uma interpolação consistente de séries históricas de entalpia (H), utilizando o método spline como opção de krigagem em áreas com poucos pontos de amostragem, a fim de produzir um mapa temático da entalpia, considerando as condições de conforto térmico para produzir frangos de corte, que poderá ser utilizado como ferramenta de manejo, visando reduzir o consumo de energia devido ao processo de resfriamento das instalações. Verificou-se que spline é um método eficiente para criar uma representação adequada de mapas temáticos de áreas que apresentam poucas unidades amostradas. A representação geográfica de entalpia permitiu a avaliação dos ambientes, concluindo que o Mato Grosso do Sul é um Estado onde a produção de frangos de corte torna-se inviável sem sistemas apropriados de resfriamento térmico, o que corrobora a sugestão de introdução da avicultura em áreas ainda inexploradas, como Chapadão do Sul e Sete Quedas.

ABSTRACT Owing to the exponential growth of the human population and problems related to food supply, research focused on finding the most suitable approach to manage and geographically explore the environment using sustainable technologies stand out. The present study aims to produce a consistent interpolation of historical series of enthalpy (H) resulting in a thematic map of enthalpy, using the spline method as a kriging option in areas with few sampling points. The thematic map considers thermal comfort conditions to produce broiler chickens, that could be used as a management tool to reduce power consumption due to the cooling process of the facilities. It was verified that spline is an efficient method to create a suitable thematic maps representations of areas presenting a few sampled units. The geographical representation of enthalpy allowed the evaluation of the environments, concluding that the state of Mato Grosso do Sul, Brazil is inadequate for broiler chickens production without suitable thermal cooling systems. Evidence suggests introduction of aviculture in areas still unexplored, e.g., Chapadão do Sul and Sete Quedas.

https://doi.org/10.1590/1807-1929/agriambi.v24n7p431-436 545 downloads

13.

A newly validated HPLC–DAD-UV method to study the effects of medicinal plants extracts, fractions and isolate compounds on gastric emptying in rodents
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Siqueira, Monica R.P.

; Rosa, Lorenna C. da

; Santos, Rafael de O.

; Lopes, Marina Priscila G. da S.

; Paumgartten, Francisco J.R.

; Moreira, Davyson de Lima

Revista Brasileira de Farmacognosia

Journal Metrics
- Sobre o periódico
- SciELO Analytics

oct 2019, Volume 29 N. 5 Pages 597 - 604

Abstract: En | Text: En | PDF: En

Abstract In this study, we developed and validated a chromatographic method by High-performance Liquid Chromatography coupled to Diode-Array Ultraviolet Detector for quantification of acetaminophen in small volumes of plasma. This analytical method is particularly suitable for studies of gastric emptying time and pharmacokinetics in small rodents. Orally administered acetaminophen is promptly and completely absorbed in the intestines, with negligible absorption from the stomach. Owing to these kinetic features, acetaminophen can be used to study gastric emptying. The newly-validated analytical method was employed to investigate whether plants used as anti-dyspeptics in the Brazilian traditional medicine affect the gastric emptying. Lyophilized aqueous extracts from leaves of Baccharis trimera (Less) DC., Asteraceae (carqueja), Maytenus ilicifolia Mart. Ex Reissek, Celastraceae (espinheira-santa) and Lippia alba (Mill.) N.E.Br. ex Britton & P. Wilson, Verbenaceae (erva-cidreira) were administered by gavage to female Wistar rats 30 min before a single oral dose of acetaminophen (50 mg/kg). L. alba extract (50 mg/kg) did not alter acetaminophen plasma concentration versus time curve an indication that it has no effect on gastric emptying. Extracts of B. trimera (50 mg/kg) and M. ilicifolia (30 and 50 mg/kg, but not 10 mg/kg), however, slightly delayed gastric emptying. M. ilicifolia given by intraperitoneal route (30 mg/kg) also retarded gastric emptying. In conclusion, the newly-validated analytical method is adequate for studying the effects of medicinal plants on gastric emptying.

https://doi.org/10.1016/j.bjp.2019.03.003 665 downloads

14.

Analysis of Isomeric Cannabinoid Standards and Cannabis Products by UPLC-ESI-TWIM-MS: a Comparison with GC-MS and GC × GC-QMS
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Santos, Nayara A. dos

; Tose, Lilian V.

; Silva, Samantha R. C. da

; Murgu, Michael

; Kuster, Ricardo M.

; Ortiz, Rafael S.

; Camargo, Flavio A. O.

; Vaz, Boniek G.

; Lacerda Jr., Valdemar

; Romão, Wanderson

Journal of the Brazilian Chemical Society

Journal Metrics
- Sobre o periódico
- SciELO Analytics

jan 2019, Volume 30 N. 1 Pages 60 - 70

Abstract: En | Text: En | PDF: En

The Cannabis sativa L. plant has a complex chemical composition, containing various chemical compounds such as terpenes, sugars, hydrocarbons, steroids, flavonoids, and amino acids. Few works have attempted to identify the constitutional isomers of cannabinoids that are found in the plant. The present study reported the analysis of seven cannabinoid standards: five neutral and two acidic, as well as Cannabis products (hashish and marijuana) and parts of the Cannabis plant (flower and leaf) using mono-dimensional gas chromatography coupled with mass spectrometry (GC-MS) and two-dimensional gas chromatography coupled with quadrupole MS (GC × GC-QMS), ultra performance liquid chromatography coupled with electrospray ionization-quadrupole-time of flight (UPLC-ESI-QTOF)-MS and UPLC-ESI-travelling wave ion mobility (TWIM)-MS. The results of GC-MS demonstrated close retention times (∆tR = 1.303 min) in separation of the five cannabinoid standards, whereas GC × GC-QMS provided a substantially better identification and distinction of constitutional isomers of cannabinoids, where a total of 11 cannabinoids were identified in the hashish sample. UPLC-QTOF-MS and UPLC-TWIM-MS data obtained complete chemical information, in which ESI(+) revealed the presence of seven constitutional isomers of ∆9-tetrahydrocannabinol (∆9-THC), whereas ESI(-) proved the presence of four isomers of ∆9-tetrahydrocannabinolic acid A (∆9-THCA A).

https://doi.org/10.21577/0103-5053.20180152 7071 downloads

15.

Cetacean movements in coastal waters of the southwestern Atlantic ocean
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Santos, Marcos C. de O.

; Laílson-Brito, José

; Flach, Leonardo

; Oshima, Júlia E. F.

; Figueiredo, Giovanna C.

; Carvalho, Rafael R.

; Ventura, Elisa S.

; Molina, Julia M. B.

; Azevedo, Alexandre F.

Biota Neotropica

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2019, Volume 19 N. 2 elocation e20180670

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

Resumo: Cetáceos foram monitorados em cerca de 700 km da costa sudeste do Brasil (22°S a 25°S) entre 1995 e 2014 com o uso da fotoidentificação. O objetivo deste estudo foi de identificar quaisquer presenças de movimentos de longa distância de indivíduos das espécies monitoradas e discutir suas implicações. Dados de movimentos de longa distância de quatro das espécies monitoradas são apresentados após a análise de 321.765 fotos obtidas para identificações individuais. Sete indivíduos de quatro populações de boto-cinza (Sotalia guianensis) consideradas residentes a estuários e baías particulares foram reportados em movimentos de dispersão envolvendo pares de áreas protegidas em distâncias que variaram entre 86 e 135 km. Três golfinhos-de-dentes-rugosos (Steno bredanensis) catalogados e avistados primeiramente na Baía de Guanabara, Rio de Janeiro (22°46'S), em novembro de 2011, foram avistados 240 km mais ao sul como membros de um mesmo grupo nas águas costeiras do Estado de São Paulo (23°46'S) em julho de 2014. A profundidade da água onde essas avistagens aconteceram variou entre 16 e 52,7 m; avistagens de golfinhos-de-dentes-rugosos têm sido efetuadas em águas rasas na costa sudeste do Brasil, embora a distribuição global da espécie esteja associada a águas profundas. Em um intervalo de 27 dias na primavera de 2012, um grupo de 16 orcas (Orcinus orca) se desclocou cerca de 277 km em águas rasas variando entre 20 e 30 m. Orcas são comumente avistadas entre novembro e fevereiro no sudeste do Brasil, possivelmente em busca de presas. Nos meses de verão entre 2012 e 2014, três baleias-de-Bryde (Balaenoptera edeni) avistadas em águas de 14 a 49 m de profundidade, moveram-se entre 218 e 327 km. baleias-de-Bryde são encontradas em águas costeiras locais onde passam os meses de verão se alimentando de sardinhas. Até o presente momento, esses são os deslocamentos estimados como os de maiores distâncias observados para S. guianensis, S. bredanensis, O. orca and B. edeni no Atlântico Sudoeste.

Abstract: Cetaceans were monitored along ca. 700 km of the southeast coast of Brazil (22°S to 25°S) from 1995 to 2014 using photo-identification. The objective of this study was to identify any presence of long-distance movements for monitored cetacean species and discuss implications. Data on long-range movements of four of the monitored species are presented after the analysis of 321,765 photographs taken for individual identification. Seven individuals from four populations of Guiana dolphins (Sotalia guianensis) considered resident to particular estuaries or bays were reported in dispersal involving movement between pairs of protected areas over long-range distances varying between 86 and 135 km. Three cataloged rough-toothed dolphins (Steno bredanensis), first seen in Guanabara Bay, Rio de Janeiro state (22°46'S) in November 2011, were sighted 240 km southwards as members of the same group in coastal waters of São Paulo state (23°46'S) in July 2014. Water depth for those sightings ranged from 16 to 52.7 m; local sightings of rough-toothed dolphins in Brazil have frequently been in shallow waters, but the species global distribution is usually associated with deeper waters. In a 27-day interval in the spring of 2012, a group of 16 orcas (Orcinus orca) travelled ca. 277 km in shallow coastal waters ranging from 20 to 30 m deep. Orcas are commonly observed between November and February in southeast Brazil, probably in search for prey. In summer months between 2012 and 2014, three Bryde's whales (Balaenoptera edeni) sighted in waters ranging from 14 to 49 m deep, moved between 218 and 327 km. Bryde's whales are usually found in local coastal waters where they spend summer months feeding on sardines. To date, these are the longest estimated movements reported to S. guianensis, S. bredanensis, O. orca and B. edeni in the Southwestern Atlantic Ocean.

https://doi.org/10.1590/1676-0611-bn-2018-0670 1777 downloads

Showing

itens per page

Page of 2 Next

Select one or more results

All Alphabetic

Results

Comparative chart Download CSV

Statistics of

Send result

To*

Use ; (semicolon) to insert more emails.

Send to email

This page

Selected records

All references (max. 300)

Your email

Subject

Comments

Export format:

RIS (for EndNote, ProCite, Reference Manager, RefWorks, Citavi, etc.)

BibTeX

Citation

CSV (for Excel, etc)

Export:

This page

Selected itens

All references (max. 2000)

Sem resultados

No documents were found for your search

Glossary and search help

You can enrich your search in a very simple way. Use the search indexes combined with the connectors (AND or OR) and specify more your search.

For example, if you want to search for articles about
cases of dengue in Brasil in 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

See below the complete list of search indexes that can be used:

Index code	Element
ti	article title
au	author
kw	article keywords
subject	subject (title words, abstract and keywords)
ab	abstract
ta	journal short title (e.g. Cad. Saúde Pública)
journal_title	journal full title (e.g. Cadernos de Saúde Pública)
la	publication language code (e.g. pt - Portuguese, es - Spanish)
type	document type
pid	publication identifier
publication_year	publication year of publication
sponsor	sponsor
aff_country	country code of the author's affiliation
aff_institution	author affiliation institution
volume	article volume
issue	article issue
elocation	elocation
doi	DOI number
issn	journal ISSN
in	SciELO colection code (e.g. scl - Brasil, col - Colômbia)
use_license	article usage license code

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
Email: scielo@scielo.org

All the contents of this site www.scielo.br, except where otherwise noted, is licensed under a Creative Commons Attribution License.
more »