Pesquisa | SciELO

Abstract The study evaluated the use of nano copper in semi-purified diets for laying quails and its effect on performance, metabolic state, and bioavailability. A total of 160 (180-days-old) quails were distributed in a completely randomized design, in a 3x3+1 factorial. The copper sources used were copper sulfate, copper oxide, and nano copper oxide, at levels of 200, 400, and 800 ppm each, totaling nine treatments plus a negative control (with no copper inclusion). The following variables were determined: weight gain, feed intake, egg production, egg weight, hemoglobin, hematocrit, Cu in the tissues and Cu bioavailability. Data were subjected to analysis of variance at 5% probability. The effect of sources and levels, as well as the interaction between the factors were evaluated. When interaction was observed, the effect of sources was evaluated separately by the Tukey’s test and the effect of levels by regression, both at 5% probability. Copper nano oxide can be used at up to 800 ppm in the diet of laying quails without altering the productive performance, and with higher bioavailability than conventional copper oxide. Hemoglobin increases with the inclusion of 200 and 400 ppm of nano copper oxide and the hematocrit with 400 ppm. semipurified semi purified performance state 16 180daysold daysold 180 days old (180-days-old design 3x31 x 3x3 1 3x3+ factorial sulfate 80 each inclusion. . inclusion) determined gain intake production hemoglobin 5 probability observed Tukeys Tukey s regression 20 40 18 3x 8 2 4

https://doi.org/10.1590/0001-3765202420231121

Long-term chronic infection of a young immunocompromised patient by the SARS-CoV-2 P.2 VOI Longterm Long term SARSCoV2 SARSCoV SARS CoV 2 SARS-CoV- P2 P P. SARS-CoV
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Romano, Camila Malta

; Silva, Vitor Gabriel Lopes da

; Silva, Luciane Sussuchi da

; Aranda, Carolina Sanchez

; Oliveira, Cristina Mendes de

; Siqueira, Marilda Mendonça Teixeira

; Pereira, Elisa Cavalcante

; Resende, Paola Cristina

; Bellei, Nancy Cristina Junqueira

; Levi, José Eduardo

; Moraes-Pinto, Maria Isabel de

Revista do Instituto de Medicina Tropical de São Paulo

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2024, Volume 66 elocation e69

Resumo: En | Texto: En | PDF: En

ABSTRACT An immunocompromised patient was infected by the SARS-CoV-2 variant of interest named Zeta (P.2) in February 2021. More than one year later, he suffered from symptomatic COVID-19 and sequencing revealed the same variant, which accumulated 23 substitutions. This case illustrates intra-host evolution of a particular SARS-CoV-2 variant, highlighting the importance of genomic surveillance of immunocompromised patients. SARSCoV2 SARSCoV SARS CoV 2 SARS-CoV- P.2 P2 P (P.2 2021 later COVID19 COVID 19 COVID-1 substitutions intrahost intra host patients SARS-CoV P. (P. 202 COVID1 1 COVID- (P 20

https://doi.org/10.1590/s1678-9946202466069

Phytate-phosphorus and phytase on performance, bone characteristics, tissue and serum mineral concentration on broilers Phytatephosphorus Phytate phosphorus performance characteristics
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CATALAN, AIANE A.S.

; SILVA, SUELEN N. DA

; AVILA, VALDIR S. DE

; KRABBE, EVERTON L.

; LOPES, LETICIA S.

; KAWSKI, VICKY L.

; XAVIER, EDUARDO G.

; ROLL, VICTOR F.B.

Anais da Academia Brasileira de Ciências

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2023, Volume 95 Nº 4 elocation e20191162

Resumo: En | Texto: En | PDF: En

Abstract Male broiler chickens (384), Cobb 500, were housed in metabolic cages to assess the efficacy of phytase in diets with low and high phytate-phosphorus on the performance, bone physical characteristics, tissue and serum mineral deposits. Birds were distributed in four treatments with a 2 x 2 factorial arrangement in a completely randomized block design. Experimental diets based on maize-soybean meal were T1 – diet low phytate-phosphorus; T2 – diet low phytate-phosphorus and phytase (500 FTU/kg); T3 – diet high phytate-phosphorus; T4 – diet high phytate-phosphorus and phytase (500 FTU/kg). Feed intake, body weight, weight gain and feed conversion ratio were assessed. Two left tibias per experimental unit were analyzed for physical characteristics and mineral concentration; a section of skinless breast muscle and blood were collected to measure the concentration of calcium, phosphorus and sodium. Results showed interaction between bone stiffness and serum calcium. The inclusion of phytase in diets with low and high phytate-phosphorus did not alter performance, bone resistance and flexibility, mineral deposits in the tibia and breast muscle, but increased bone stiffness after 22 days of age. It also provided a higher serum calcium rate in broilers fed diets with low phytate-phosphorus up to 32 days of age. 384, 384 , (384) 500 phytatephosphorus phytate performance design maizesoybean maize soybean T (50 FTU/kg FTUkg FTU kg FTU/kg) FTU/kg. . intake assessed sodium flexibility age 3 38 (384 50 (5 (38 5 ( (3

https://doi.org/10.1590/0001-3765202320191162

Industrial egg residue as a calcium source in broiler feed: digestibility and growth performance feed
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NOVACK, CLAUDIO

; BOIAGO, MARCEL M.

; ZAMPAR, ALINE

; BARRETA, MAURICIO

; OLIVEIRA, ROSILENE

; ROSCAMP, EDUARDO

; DILKIN, JÉSSICA D.

; PETROLLI, TIAGO G.

; ARAUJO, DENISE N.

; TAVERNARI, FERNANDO C.

; LOPES, MARCOS T.

; SILVA, ALEKSANDRO S. DA

Anais da Academia Brasileira de Ciências

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2023, Volume 95 Nº 2 elocation e20201688

Resumo: En | Texto: En | PDF: En

Abstract Industrial egg residue (IER) possesses substantial concentrations of calcium and crude protein. The objective of this study was to measure the digestibility and performance of broilers when IER was added to the feed. Four treatments were tested, which caused increasing replacement of calcitic limestone by IER (0, 35, 70 and 100%) during a 42-day production cycle. First, total bird excreta were collected from broilers with and without IER, and we determined dry matter digestibility, apparent metabolizable energy (AME), calcium, and nitrogen retention. The IER presented 7.5% of crude protein, 31% of calcium, 209 kcal/kg of AME and the digestibility coefficients for dry matter, crude protein, and calcium were calculated at 83.95%, 86.20%, and 67%, respectively. After the digestibility test, the effects of IER on performance, carcass and meat yield were evaluated. No significant differences between the treatments were found in terms of performance (weight gain, feed conversion, consumption, and mortality), and no differences were found in terms of carcass or meat yield. A linear decrease in the percentage of abdominal fat was observed with increasing inclusion of IER in feed. These findings suggest that IER can totally replace limestone (calcium carbonate) in broiler diets. (IER protein tested 0, 0 (0 35 7 100% 100 42day day 42 cycle First AME, , (AME) retention 75 5 7.5 31 20 kcalkg kcal kg 8395 83 95 83.95% 8620 86 86.20% 67 67% respectively test evaluated weight gain conversion consumption mortality, mortality mortality) carbonate diets ( 3 10 4 (AME 7. 2 839 8 9 83.95 862 86.20 6 1 83.9 86.2 83. 86.

https://doi.org/10.1590/0001-3765202320201688

A New Approach for Histamine Functionalized Nanoparticles as Sorbent Phase for Bar Adsorptive Microextraction (BAµE) and Determination of Parabens in Water by HPLC-DAD
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Lopes, Daniela

; Morés, Lucas

; Bernardi, Gabrieli

; Campedelli, Roberta R.

; Pinheiro, Gabriela

; Souza, Bruno S. de

; Carasek, Eduardo

Journal of the Brazilian Chemical Society

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Set 2022, Volume 33 Nº 9 Páginas 1098 - 1105

Resumo: En | Texto: En | PDF: En

In this study, for the first time, histamine-functionalized magnetic nanoparticles (HIS-MNP) were used as sorbent phase combined with bar adsorptive microextraction (BAµE) for the determination of methylparaben (MP), ethylparaben (EP), propylparaben (PP), and butylparaben (BP) in water samples by high performance liquid chromatography coupled with diode array detection (HPLC-DAD). Extraction and desorption conditions, including desorption time and solvent, ionic strength effect and extraction time, were investigated. The extractions were performed for 90 min, 30% of NaCl and sample pH 5. Desorption was carried out using 250 μL of acetonitrile:methanol (25:75 v/v) for 30 min. The limits of detection (LODs) were of 1.5 μg L-1 and limits of quantification (LOQs) were 5.0 μg L-1 for all analytes. The intra-day precision ranged from 1% for EP, PP and BP to 3% for MP, EP, PP and BP. The inter-day precision ranged from 3% for EP to 18% for BP. The relative recoveries varied from 81 to 125%, and relative standard deviations (RSD) ranged between 1 and 16%.

https://doi.org/10.21577/0103-5053.20220028

Botanical sources and heavy metals contents of honey produced by Apis mellifera in an ecotone region of the state of Bahia, Brazil
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SILVEIRA-JÚNIOR, CRISTIANO EDUARDO A.

; LOPES, BIANCA A.

; SILVA, TÂNIA MARIA S.

; GOMES, AYALA NARA P.

; SILVA, GIRLIANE REGINA DA

; ARRUDA, RAFAEL S. DE

; MACIEL, EDSON A.

; SANTOS, FRANCISCO A.R. DOS

Anais da Academia Brasileira de Ciências

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2022, Volume 94 Supl. 4 elocation e20211551

Resumo: En | Texto: En | PDF: En

Abstract The present study investigated by palynological and chemical analysis (Flame Atomic Absortion Spectrometry) about the botanical origin and the heavy metals content (arsenic, cadmium, chromium, lead and mercury) of monthly honey samples of Apis mellifera L. over two years. The pollen types Apiaceae, Mimosa caesalpiniifolia, M. tenuiflora and Myrcia indicated the main floristic sources used by bees. M. tenuiflora was the most frequent of the pollen types, and because it predominates in different months in each year, which may indicate more than one species of the genus being foraged by the beehive. The climatic influence (rainfall and temperature) on the pollen diversity was investigated and was not statistically supported. The chemical analysis showed that the heavy metal content of the samples were below their respective limits of quantification, and, therefore, the samples can be considered safe for human consumption.

https://doi.org/10.1590/0001-3765202220211551

REDUçãO DE CO2 EM HIDROCARBONETOS E OXIGENADOS: FUNDAMENTOS, ESTRATéGIAS E DESAFIOS
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Silva, Gelson T. S. T. da

; Lopes, Osmando F.

; Dias, Eduardo H.

; Torres, Juliana A.

; Nogueira, André E.

; Faustino, Leandro A.

; Prado, Fernando S.

; Patrocínio, Antônio O. T.

; Ribeiro, Caue

Química Nova

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Ago 2021, Volume 44 Nº 8 Páginas 963 - 981

Resumo: Pt | Texto: Pt | PDF: Pt

CO2 REDUCTION TO HYDROCARBONS AND OXYGENATES: FUNDAMENTALS, STRATEGIES AND CHALLENGES. The development of renewable energy sources (e.g., solar and wind) moves foward, the tendance for replacing fossil fuels increases. However, these technologies have as primary barriers to industrial processes’ efficiency and especially storage. Thus, CO2 reduction routes using these energy sources could chemically store part of the energy as fuels or chemicals, offering alternatives to current oil and gas industry. This process is inspired by photosynthesis, e.g., photochemical or electrochemical processes, using homogeneous or heterogeneous catalysts. Nevertheless, this reaction is thermodynamically unfavorable and has very slow kinetics, given the high stability of the CO2 molecule and the complexity of the redox reactions involved. Therefore, this review addresses this process’s kinetic and thermodynamic challenges, and the fundamental concepts of the photo(electro)chemical processes for CO2 reduction, besides presenting and discussing the materials with the potential to act as catalysts. The main reaction mechanisms and advances in the understanding of such processes are discussed, as well as future perspectives

https://doi.org/10.21577/0100-4042.20170745 107 downloads

Lightning Protection Design for Small Riverboats Using the FDTD Method
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Leal, Adonis F. R.

; Oliveira, Rodrigo M. S. de

; Lopes, Nathan M.

; Lima, Thiago S. de

; Ferreira, Eduardo R.

; Rodrigues, Nilton Rodolfo N. M.

Journal of Microwaves, Optoelectronics and Electromagnetic Applications

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Jun 2021, Volume 20 Nº 2 Páginas 307 - 319

Resumo: En | Texto: En | PDF: En

Abstract The Amazon region has high lightning occurrence rates, with many lightning hot spots. Different rivers cross the Amazon rainforests and the people that live there use these rivers as roads to go from one place to another. Every year, lightning deaths are reported in the Brazilian Amazon region. In 2018, a lightning discharge struck a small riverboat, which killed 4 people and injured 5 in the North region of Brazil. In this study, we investigate lightning fatalities in Amazon rivers and compute electric field distribution in a small riverboat due to a lightning strike using the finite-difference time-domain (FDTD) method. The results show that the electric field produced inside the boat is large enough to cause air breakdown. Additionally, we propose a cost-effective method to improve lightning safety for people that use small boats in the Amazon region.

https://doi.org/10.1590/2179-10742021v20i21074 96 downloads

Adipose tissue-derived stromal/stem cells + cholecalciferol: a pilot study in recent-onset type 1 diabetes patients
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Dantas, Joana Rodrigues

; Araújo, Débora Batista

; Silva, Karina Ribeiro

; Souto, Débora Lopes

; Pereira, Maria de Fátima Carvalho

; Luiz, Ronir Raggio

; Mantuano, Matheus dos Santos

; Claudio-da-Silva, Cesar

; Gabbay, Monica Andrade Lima

; Dib, Sérgio Atala

; Couri, Carlos Eduardo Barra

; Maiolino, Angelo

; Rebelatto, Carmen Lúcia Kuniyoshi

; Daga, Débora Regina

; Senegaglia, Alexandra Cristina

; Brofman, Paulo Roberto Slud

; Baptista, Leandra S.

; Oliveira, José Egídio Paulo de

; Zajdenverg, Lenita

; Rodacki, Melanie

Archives of Endocrinology and Metabolism

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Jun 2021, Volume 65 Nº 3 Páginas 342 - 351

Resumo: En | Texto: En | PDF: En

ABSTRACT Objective: Adipose tissue-derived stromal/stem cells (ASCs) and vitamin D have immunomodulatory actions that could be useful for type 1 diabetes (T1D). We aimed in this study to investigate the safety and efficacy of ASCs + daily cholecalciferol (VIT D) for 6 months in patients with recent-onset T1D. Materials and methods: In this prospective, dual-center, open trial, patients with recent onset T1D received one dose of allogenic ASC (1 x 106 cells/kg) and cholecalciferol 2,000 UI/day for 6 months (group 1). They were compared to patients who received chol-ecalciferol (group 2) and standard treatment (group 3). Adverse events were recorded; C-peptide (CP), insulin dose and HbA1c were measured at baseline (T0), after 3 (T3) and 6 months (T6). Results: In group 1 (n = 7), adverse events included transient headache (all), mild local reactions (all), tachycardia (n = 4), abdominal cramps (n = 1), thrombophlebitis (n = 4), scotomas (n = 2), and central retinal vein occlusion at T3 (n = 1, resolution at T6). Group 1 had an increase in basal CP (p = 0.018; mean: 40.41+/-40.79 %), without changes in stimulated CP after mixed meal (p = 0.62), from T0 to T6. Basal CP remained stable in groups 2 and 3 (p = 0.58 and p = 0.116, respectively). Group 1 had small insulin requirements (0.31+/- 0.26 UI/kg) without changes at T6 (p = 0.44) and HbA1c decline (p = 0.01). At T6, all patients (100%; n = 7) in group 1 were in honeymoon vs 75% (n = 3/4) and 50% (n = 3/6) in groups 2 and 3, p = 0.01. Conclusions: Allogenic ASC + VIT D without immunosuppression was safe and might have a role in the preservation of β-cells in patients with recent-onset T1D. ClinicalTrials.gov: NCT03920397.

https://doi.org/10.20945/2359-3997000000368 236 downloads

10.

A proposal for static load tests on piles: the Equilibrium Method
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Lopes, Francisco R.

; Maria, Paulo Eduardo L. Santa

; Danziger, Fernando A. B.

; Martins, Ian S. M.

; Danziger, Bernadete R.

; Tassi, Michel C.

Soils and Rocks

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2021, Volume 44 Nº 1 elocation e2021057920

Resumo: En | Texto: En | PDF: En

Abstract This note presents an alternative method for static load tests on piles (and caissons). Called Equilibrium Method by its first proponents, the method was applied in some load tests in Brazil, in addition to being the object of theoretical studies conducted at the Federal University of Rio de Janeiro. The method consists, in each step, to keep the load constant for a period of time and then let it relax (not pumping the jack) until the displacement and the load reach mutual equilibrium. The stabilized displacement and the relaxed load (the so-called load and displacement in equilibrium) are considered for the load-displacement curve. The method has the advantage of producing the load-displacement curve close to that of a slow, stabilized test (incremental slow maintained load test), but with a shorter total execution time. The paper includes a short theoretical background and a review of the Brazilian experience.

https://doi.org/10.28927/sr.2021.057920 130 downloads

11.

Atualização das Diretrizes Brasileiras de Valvopatias – 2020
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Tarasoutchi, Flavio

; Montera, Marcelo Westerlund

; Ramos, Auristela Isabel de Oliveira

; Sampaio, Roney Orismar

; Rosa, Vitor Emer Egypto

; Accorsi, Tarso Augusto Duenhas

; Santis, Antonio de

; Fernandes, João Ricardo Cordeiro

; Pires, Lucas José Tachotti

; Spina, Guilherme S.

; Vieira, Marcelo Luiz Campos

; Lavitola, Paulo de Lara

; Ávila, Walkiria Samuel

; Paixão, Milena Ribeiro

; Bignoto, Tiago

; Togna, Dorival Júlio Della

; Mesquita, Evandro Tinoco

; Esteves, William Antônio de Magalhães

; Atik, Fernando

; Colafranceschi, Alexandre Siciliano

; Moises, Valdir Ambrósio

; Kiyose, Alberto Takeshi

; Pomerantzeff, Pablo M. A.

; Lemos, Pedro A.

; Brito Junior, Fabio Sandoli de

; Weksler, Clara

; Brandão, Carlos Manuel de Almeida

; Poffo, Robinson

; Simões, Ricardo

; Rassi, Salvador

; Leães, Paulo Ernesto

; Mourilhe-Rocha, Ricardo

; Pena, José Luiz Barros

; Jatene, Fabio Biscegli

; Barbosa, Márcia de Melo

; Abizaid, Alexandre

; Ribeiro, Henrique Barbosa

; Bacal, Fernando

; Rochitte, Carlos Eduardo

; Fonseca, José Honório de Almeida Palma da

; Ghorayeb, Samira Kaissar Nasr

; Lopes, Marcelo Antonio Cartaxo Queiroga

; Spina, Salvador Vicente

; Pignatelli, Ricardo H.

; Saraiva, José Francisco Kerr

Arquivos Brasileiros de Cardiologia

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Out 2020, Volume 115 Nº 4 Páginas 720 - 775

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

https://doi.org/10.36660/abc.20201047 17824 downloads

12.

THE FUNDAMENTAL IMPORTANCE OF BASIC SCIENCE: EXAMPLES OF HIGH-IMPACT DISCOVERIES FROM AN INTERNATIONAL CHEMISTRY NETWORK
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Lopes, Luiz G. F.

; Sadler, Peter J.

; Bernardes-Génisson, Vânia

; Moura, José J. G.

; Chauvin, Remi

; Bernhardt, Paul V.

; Sousa, Eduardo H. S.

Química Nova

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Set 2020, Volume 43 Nº 8 Páginas 1176 - 1189

Resumo: En | Texto: En | PDF: En

During the last 150 years or more, society has witnessed many key scientific discoveries and inventions, which have dramatically improved not only our quality of life, but our lifespan. However, the motivation of scientists to provide scientific advances has generally not been the achievement of these goals, but mainly driven by research curiosity. Fundamental scientific studies, also known as basic science, have paved the way to a society of knowledge by means of continuously evolving education systems, and have led to applied science and technological breakthroughs changing the World. However, without basic science such life-changing advances would not happen, which is poorly understood by the society. Having this in mind, chemists and biochemists working in a chemistry network highlight here examples of how basic science has played a crucial role and led to major breakthroughs. In seven short stories, the authors describe cases and historical events where basic research discoveries have advanced science, and opened avenues for future achievements. Investment in basic science is crucial for a nation’s health and wealth. The support of scientists driven by curiosity ultimately can benefit the whole of society, not only in innovative products, but also in the improvement of the understanding of our own lives.

https://doi.org/10.21577/0100-4042.20170584 5062 downloads

13.

Guideline of the Brazilian Society of Cardiology on Telemedicine in Cardiology - 2019
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Lopes, Marcelo Antônio Cartaxo Queiroga

; Oliveira, Gláucia Maria Moraes de

; Ribeiro, Antonio Luiz Pinho

; Pinto, Fausto J.

; Rey, Helena Cramer Veiga

; Zimerman, Leandro Ioschpe

; Rochitte, Carlos Eduardo

; Bacal, Fernando

; Polanczyk, Carisi Anne

; Halperin, Cidio

; Araújo, Edson Correia

; Mesquita, Evandro Tinoco

; Arruda, José Airton

; Rohde, Luis Eduardo Paim

; Grinberg, Max

; Moretti, Miguel

; Caramori, Paulo Ricardo Avancini

; Botelho, Roberto Vieira

; Brandão, Andréa Araújo

; Hajjar, Ludhmila Abrahão

; Santos, Alexandre Fonseca

; Colafranceschi, Alexandre Siciliano

; Etges, Ana Paula Beck da Silva

; Marino, Bárbara Campos Abreu

; Zanotto, Bruna Stella

; Nascimento, Bruno Ramos

; Medeiros, Cesar Rocha

; Santos, Daniel Vitor de Vasconcelos

; Cook, Daniela Matos Arrowsmith

; Antoniolli, Eduardo

; Souza Filho, Erito Marques de

; Fernandes, Fábio

; Gandour, Fabio

; Fernandez, Francisco

; Souza, Germano Emilio Conceição

; Weigert, Guilherme de Souza

; Castro, Iran

; Cade, Jamil Ribeiro

; Figueiredo Neto, José Albuquerque de

; Fernandes, Juliano de Lara

; Hadlich, Marcelo Souza

; Oliveira, Marco Antonio Praça

; Alkmim, Maria Beatriz

; Paixão, Maria Cristina da

; Prudente, Maurício Lopes

; Aguiar Netto, Miguel A. S.

; Marcolino, Milena Soriano

; Oliveira, Monica Amorim de

; Simonelli, Osvaldo

; Lemos Neto, Pedro A.

; Rosa, Priscila Raupp da

; Figueira, Renato Minelli

; Cury, Roberto Caldeira

; Almeida, Rodrigo Coelho

; Lima, Sandra Regina Franco

; Barberato, Silvio Henrique

; Constancio, Thiago Inocêncio

; Rezende, Wladimir Fernandes de

Arquivos Brasileiros de Cardiologia

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Nov 2019, Volume 113 Nº 5 Páginas 1006 - 1056

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

https://doi.org/10.5935/abc.20190205 5274 downloads

14.

Acanthocephalan parasites of the flounder species Paralichthys isosceles, Paralichthys patagonicus and Xystreurys rasile from Brazil
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Fonseca, Michelle Cristie Gonçalves da

; Knoff, Marcelo

; Felizardo, Nilza Nunes

; Torres, Eduardo José Lopes

; Di Azevedo, Maria Isabel Nogueira

; Gomes, Delir Corrêa

; Clemente, Sérgio Carmona de São

; Iñiguez, Alena Mayo

Revista Brasileira de Parasitologia Veterinária

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Jul 2019, Volume 28 Nº 3 Páginas 346 - 359

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo Os linguados são peixes comercial e economicamente importantes. Um total de 120 espécimes de linguados (60 Paralichthys isosceles, 30 P. patagonicus e 30 Xystreurys rasile) foram coletados no litoral do estado do Rio de Janeiro, Brasil. Os peixes foram medidos, necropsiados, filetados e tiveram seus órgãos investigados para a presença de acantocéfalos. A identificação taxonômica foi baseada em caracteres morfológicos, morfométricos e genéticos. Paralichthys isosceles e P. patagonicus estavam parasitados por acantocéfalos juvenis de Serrasentis sagittifer, Bolbosoma turbinella, Corynosoma australe e C. cetaceum; Xystreurys rasile estava parasitado com C. australe. A caracterização genética confirmou a identificação dos espécimes de Bolbosoma turbinella e Corynosoma australe, como demonstrado por análises filogenéticas usando ambos marcadores moleculares ITS e cox1. Foram analisados os índices parasitários: prevalência, intensidade, intensidade média, abundância, abundância média, amplitude de variação da infecção e sítio de infecção de cada espécie de parasito. Este é o primeiro registro de S. sagittifer parasitando P. isosceles e P. patagonicus, e de B. turbinella parasitando P. patagonicus.

Abstract Flounders are commercially and economically important fish. A total of 120 specimens of flounders (60 Paralichthys isosceles, 30 Paralichthys patagonicus and 30 Xystreurys rasile) were collected off the coast of the state of Rio de Janeiro, Brazil. The fish were measured, necropsied and filleted, and then had their organs investigated for acanthocephalans. Taxonomic identification of the parasites was based on morphological, morphometric and genetic characters. Paralichthys isosceles and P. patagonicus were parasitized by juveniles of Serrasentis sagittifer, Bolbosoma turbinella, Corynosoma australe and C. cetaceum; Xystreurys rasile was parasitized by C. australe. Genetic characterization confirmed the identification of specimens of Bolbosoma turbinella and Corynosoma australe, as demonstrated by phylogenetic analyses using both ITS and cox1 molecular targets. Parasite indices of prevalence, intensity, mean intensity, abundance, mean abundance, and range of infection, as well as infection site, were evaluated for each parasite species. This is the first report of S. sagittifer parasitizing P. isosceles and P. patagonicus, and B. turbinella parasitizing P. patagonicus.

https://doi.org/10.1590/s1984-29612019031 1330 downloads

15.

Modeling residual biomass from mechanized wood harvesting with data measured by forest harvester
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RODRIGUES, CARLA K.

; LOPES, EDUARDO S.

; FIGUEIREDO FILHO, AFONSO

; PELISSARI, ALLAN L.

; SILVA, MATHEUS K.C.

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2019, Volume 91 Nº 4 elocation e20190194

Resumo: En | Texto: En | PDF: En

Abstract: The lack of accurate models for estimating residual biomass in wood harvesting operations results in underutilization of this co-product by forestry companies. Due to the lack of this information, forestry operations planning, such as chipping and transport logistics, are influenced, with a consequent increase in costs. Thereby, the aim of this study was to propose and evaluate statistical models to estimate residual biomass of Eucalyptus sp. in wood harvesting operations by means of tree variables measured from harvester processing head. Generalized linear models were composed through stepwise procedure for estimating residual biomass by tree covariates: diameter at breast height, commercial height, commercial limit diameter, and stem commercial volume, considering also their transformations and combinations. Residual biomass distributions with positive skew support the application of generalized linear model and Gamma distribution in random component, since normality assumption in traditional linear regression was a requirement not satisfied in this study. By stepwise procedure, tree variables associated to forest biomass were selected, whose linear combinations resulted in models with high statistical efficiency and accuracy. Thus, models developed in this study are innovative tools to estimate residual biomass in mechanized wood harvesting, in which can be inserted into harvester’s hardware to provide real-time information.

https://doi.org/10.1590/0001-3765201920190194 549 downloads

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