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ABSTRACT The expression ‘you need to know to conserve’ is a well-known cliche among biologists. Documenting the richness of a group of organisms is the first step towards understanding biodiversity and preparing efficient conservation plans. In this context, many efforts have been made to quantify the number of species on Earth and estimate the number of species still unknown to science. A few countries have complete and integrated databases estimating the approximate number of species recorded for their territory, particularly in the Global South. In Brazil, a country of continental dimensions, revealing the richness of the second most diverse clade of invertebrates (=Mollusca) has been a goal of taxonomists. Recently, in an unprecedented, collective, and integrated effort among Brazilian malacologists, it was possible to estimate how many valid species of molluscs are there in Brazil. In this effort, more than 30 mollusc experts joined together to update the Taxonomic Catalogue of the Brazilian Fauna (TCBF), a governmental website that allows a quick and real-time updating of all Metazoan. So far, more than 5,000 updates have been made in TCBF, indicating the presence of 3,552 valid species of molluscs in Brazil, distributed among the main clades as follows: Caudofoveata (10 spp.), Solenogastres (6 spp.), Polyplacophora (35 spp.), Scaphopoda (43 spp.), Cephalopoda (92 spp.), Bivalvia (629 spp.) and Gastropoda (2,737 spp.). The present study, in addition to demonstrating for the first time the richness of Brazilian molluscs, also presents the state of the art of this important phylum of invertebrates highlighting its most representative and neglected groups.

https://doi.org/10.1590/s1984-4689.v40.e23026

Silver Nanocatalyst Supported on Waste-Based Polystyrene Foam for Thermal and Plasmonic Reduction of p-Nitrophenol
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Silva, Welida T. A. da

; Assis, Geovânia C. de

; Jesus, Roberta A. de

; Motta, Rayssa J. B.

; Ferreira, Luiz Fernando R.

; Ruiz, Yolice Patricia M.

; Galembeck, André

; Schneider, Ricardo

; Oliveira, Rodrigo J. de

Journal of the Brazilian Chemical Society

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2023, Volume 34 N. 9 Pages 1317 - 1332

Abstract: En | Text: En | PDF: En

Disposal of plastics into the environment has been one of the major problems for the environment. The accumulation of polystyrene (PS) occurs in an accelerated way and, therefore, its reuse is challenging. Polystyrene nanocomposites impregnated with Ag nanoparticles (PS/AgNP) are generated from polystyrene residues and can be applied in the catalytic and plasmonic photo-catalytic reduction of phenolic compounds such as p-nitrophenol (PNP) to p-aminophenol (PAP). The AgNP were synthesized by a reverse micelle method resulting in nanoparticles with sizes in a range of 31.1-34.0 nm. The organocolloid was characterized by UV Vis and dynamic light scattering (DLS), demonstrating the preparation of spherical nanoparticles. The preparation of the PS/AgNP, obtained using a thermally induced phase separation method (TIPS), was confirmed by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), laser-induced breakdown spectroscopy (LIBS), and Fourier transform visible infrared spectroscopy (FTIR). Nanocomposites showed impressive performance in the catalytic and plasmonic photocatalytic reduction under blue light irradiation, reaching up to 98% conversion, being a promising material for wastewater treatment as well as other various environmental issues. We used blue light to observe the plasmonic effect of silver nanoparticles, and no previous reports of this composite for PNP reduction using blue light photocatalysis were found.

https://doi.org/10.21577/0103-5053.20230044

Cutaneous phaeohyphomycosis caused by Exophiala dermatitidis in an immunosuppressed patient: A case report and brief review
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Bueno, Jéssica L.

; Ferreira, Iago G.

; Severo, Cecília B.

; Luzzato, Laura

; Xavier, Melissa O.

; Vettorato, Rodrigo

Portuguese Journal of Dermatology and Venereology

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jun 2022, Volume 80 N. 2 Pages 158 - 164

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

Resumo A feohifomicose consiste num grupo de infeções fúngicas causada por fungos filamentosos demáceos, que apresentam melanina nas suas paredes celulares. A feohifomicose possui quatro formas clínicas: superficial, subcutânea, sistémica e disseminada. Embora rara, a forma subcutânea demonstra prevalência significativa em indivíduos imunocomprometidos, principalmente transplantados de órgãos sólidos. Relatamos um caso de feohifomicose subcutânea em paciente transplantado renal, causada pela espécie Exophiala dermatitidis. Apesar de manifestações clínicas características da doença, os achados laboratoriais e culturais foram atípicos. A partir desse caso de feohifomicose, realiza-se uma breve revisão de literatura sobre essa rara e importante infeção fúngica na prática médica.

Abstract Phaeohyphomycosis is a group of fungal infections caused by filamentous dematiaceous fungi, which have melanin in their cell walls. Phaeohyphomycosis has four clinical forms: superficial, subcutaneous, systemic, and disseminated. Although rare, the subcutaneous form shows a significant prevalence in immunocompromised individuals, especially in solid organ transplant recipients. We report a case of subcutaneous phaeohyphomycosis in a renal transplant patient, caused by the species Exophiala dermatitidis. Although the case reveals characteristic clinical manifestations of the disease, laboratory and cultural findings were atypical. Based on this case of subcutaneous phaeohyphomycosis, a brief literature review is carried out on this rare and important fungal infection in medical practice.

https://doi.org/10.24875/pjd.m22000022

Evaluation of cerebral hemodynamics by transcranial Doppler ultrasonography and its correlation with intracranial pressure in an animal model of intracranial hypertension
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SOARES, Matheus Schmidt

; ANDRADE, Almir Ferreira de

; BRASIL, Sérgio

; DE-LIMA-OLIVEIRA, Marcelo

; BELON, Alessandro Rodrigo

; BOR-SENG-SHU, Edson

; NOGUEIRA, Ricardo de Carvalho

; GODOY, Daniel Agustin

; PAIVA, Wellingson Silva

Arquivos de Neuro-Psiquiatria

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apr 2022, Volume 80 N. 4 Pages 344 - 352

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

RESUMO Antecedentes: O Doppler transcraniano (DTC) é uma técnica não invasiva para a avaliação da hemodinâmica cerebral, porém existem controvérsias na literatura sobre sua aplicabilidade preditiva em situações de elevada pressão intracraniana (PIC). Objetivo: Investigar o fluxo sanguíneo cerebral pelo DTC e correlacioná-lo com as variações da PIC na fase aguda da hipertensão intracraniana em modelo animal. Métodos: Dois grupos de animais (suínos) foram submetidos a hipertensão intracraniana secundária à indução de diferentes volumes de hematoma, por meio da insuflação de balão intracraniano controlado com 4 e 7 mL de solução salina fisiológica (grupos A e B, respectivamente). Em seguida, administrou-se infusão venosa de solução salina hipertônica (SSH 3%). Foram coletados os valores dos parâmetros de PIC e DTC (velocidade sistólica [FVs], diastólica [FVd] e média [FVm] do fluxo sanguíneo cerebral), bem como o índice de pulsatilidade (IP). Comparações entre os parâmetros do DTC e o monitoramento da PIC foram realizadas. Resultados: Vinte porcos foram estudados, dez no grupo A e dez no grupo B. Correlação significativa entre IP e PIC foi obtida, principalmente logo após a elevação abrupta da PIC. Não houve correlação entre PIC e FVs, FVd ou FVm separadamente. Também não houve alteração significativa na PIC após a infusão de SSH. Conclusões: Esses resultados demonstram o potencial do IP como um bom parâmetro para a avaliação de pacientes com suspeita de elevação da PIC.

ABSTRACT Background: Transcranial Doppler has been tested in the evaluation of cerebral hemodynamics as a non-invasive assessment of intracranial pressure (ICP), but there is controversy in the literature about its actual benefit and usefulness in this situation. Objective: To investigate cerebral blood flow assessed by Doppler technique and correlate with the variations of the ICP in the acute phase of intracranial hypertension in an animal model. Methods: An experimental animal model of intracranial hypertension was used. The experiment consisted of two groups of animals in which intracranial balloons were implanted and inflated with 4 mL (A) and 7 mL (B) for controlled simulation of different volumes of hematoma. The values of ICP and Doppler parameters (systolic [FVs], diastolic [FVd], and mean [FVm] cerebral blood flow velocities and pulsatility index [PI]) were collected during the entire procedure (before and during hematoma simulations and venous hypertonic saline infusion intervention). Comparisons between Doppler parameters and ICP monitoring were performed. Results: Twenty pigs were studied, 10 in group A and 10 in group B. A significant correlation between PI and ICP was obtained, especially shortly after abrupt elevation of ICP. There was no correlation between ICP and FVs, FVd or FVm separately. There was also no significant change in ICP after intravenous infusion of hypertonic saline solution. Conclusions: These results demonstrate the potential of PI as a parameter for the evaluation of patients with suspected ICP elevation.

https://doi.org/10.1590/0004-282x-anp-2020-0591

The Effect of EDTA Functionalization on Fe3O4 Thermal Behavior
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Fumis, Daniel B.

; Silveira, Maria L.D.C

; Gaglieri, Caroline

; Ferreira, Laura T.

; Marques, Rodrigo F.C.

; Magdalena, Aroldo G.

Materials Research

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2022, Volume 25 elocation e20220312

Abstract: En | Text: En | PDF: En

Abstract The surface of Fe3O4 nanoparticles is very reactive and can oxidize to γ-Fe2O3 (maghemite) and α-Fe2O3 (hematite) structures. Based on this, the oxidation process of Fe3O4 nanoparticles must be prevented, and one of the strategies is surface functionalization with organic or inorganic molecules. Thus, this study analyzed the thermal behavior of Fe3O4 and Fe3O4-EDTA nanoparticles using X-ray diffraction (XRD), simultaneous thermogravimetry-differential thermal analysis (TG-DTA), differential scanning calorimetry (DSC). Results showed that γ- Fe2O3 was obtained as an intermediate in Fe3O4 and Fe3O4-EDTA decomposition, as confirmed by TG-DTA and DSC curves. Moreover, Fe3O4-EDTA exhibited a temperature peak (Tp = 573.5°C) of phase transformation (γ-Fe2O3 → α-Fe2O3) higher than that of Fe3O4 (Tp = 533.0°C), confirming that EDTA molecules stabilized the nanoparticles efficiently. The kinetic behavior of samples changed, and the activation energy for functionalized samples decreased.

https://doi.org/10.1590/1980-5373-mr-2022-0312

Microperimetry differences in macular sensitivity threshold between first and second tested eyes
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Junqueira, Natacha B.

; Lima, Luiz H.

; Ferreira, Rodrigo B.

; Garcia, Denny Marcos

; Furtado, João M.

; Jorge, Rodrigo

Arquivos Brasileiros de Oftalmologia

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jun 2021, Volume 84 N. 3 Pages 203 - 208

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

RESUMO Objetivo: Avaliar comparativamente o limiar de sensibilidade macular da microperimetria e a estabilidade de fixação entre o primeiro (direito) e o segundo (esquerdo) olhos testados de indivíduos normais. Métodos: Trinta pacientes saudáveis foram divididos aleatoriamente em 2 grupos. Os participantes foram submetidos à microperimetria no “fast mode” e no “expert mode” no grupo I e II, respectivamente. Cada participante foi submetido a um único teste e o olho direito foi testado primeiro. Resultados: No grupo I, o limiar médio de sensibilidade macular (± DP) foi de 24,5 ± 2,3 dB e 25,7 ± 1,1 dB nos olhos direito e esquerdo, respectivamente (p=0,0415). No grupo II foi de 26,7 ± 4,5 dB e 27,3 ± 4,0 dB nos olhos direito e esquerdo, respectivamente (p=0,58). Não houve diferença estatisticamente significativa entre os olhos dos dois grupos (p=0,1512). Em relação à estabilidade de fixação (avaliada no grupo microperimetria no “expert mode”), a média das porcentagens dos pontos de fixação dentro do 1 grau central da mácula (P1) ± DP foi de 87,9 ± 11,5% no olho direito e de 93,8 ± 6,6% no olho esquerdo. O teste t pareado não mostrou diferença estatística entre os olhos (p=0,140). O valor médio de P2 ± DP foi de 95,5 ± 4,9% no olho direito e 98,5 ± 2,1% no olho esquerdo. Foi demonstrado um aumento na porcentagem de pontos de fixação no segundo olho testado quando comparado ao primeiro (teste t pareado= 2,364; p=0,034). Houve correlação negativa entre o limiar de sensibilidade macular do olho direito e a duração do exame nos dois grupos (microperimetria no “expert mode”: r=-0,717; p=0,0026; microperimetria no “fast mode”: r=-0,843; p <0,0001). Conclusão: O limiar médio de sensibilidade macular foi maior no segundo olho testado no grupo microperimetria no “fast mode” e foi semelhante nos dois olhos no “expert mode”. Nossos dados sugerem que a compreensão do exame pelo indivíduo pode impactar nos resultados da microperimetria.

ABSTRACT Purpose: To comparatively assess the macular sensitivity threshold of microperimetry and the fixation stability between the first (right) and second (left) tested eye of normal participants. Methods: Thirty healthy patients were randomly assigned to two groups. The participants underwent microperimetry in the fast mode and expert mode in groups I and II, respectively. Each participant underwent a single test and the right eye was tested first. Results: The mean macular sensitivity threshold (± standard deviation [SD]) was 24.5 ± 2.3 dB and 25.7 ± 1.1 dB in the first (right) and second (left) eyes of group I, respectively (p=0.0415) and 26.7 ± 4.5 dB and 27.3 ± 4.0 dB in the first (right) and second (left) eyes of group II, respectively (p=0.58). There was no statistically significant difference between eyes in either group (p=0.1512). Regarding fixation stability (evaluated in the microperimetry expert mode group), the mean ± SD percentage of fixation points within the 1-degree central macula (P1) was 87.9 ± 11.5% in the right eye and 93.8 ± 6.6% in the left eye. The paired t-test did not show a statistically significant difference between eyes (p=0.140). Mean ± SD P2 value was 95.5 ± 4.9% in the right eye and 98.5 ± 2.1% in the left eye. The analysis demonstrated an increase in the percentage of fixation points in the second tested eye compared with the first one (paired t-test= 2.364; p=0.034). There was a negative correlation between the macular sensitivity threshold of the right eye and the duration of the examination for both groups (microperimetry expert mode: r=-0.717; p=0.0026; microperimetry in the fast mode: r=-0.843; p<0.0001). Conclusion: Mean macular sensitivity threshold was higher in the second tested eye in the microperimetry in the fast mode group and was similar in both eyes in the expert mode. Our data suggest that comprehension of the examination by the individual may impact the results of the microperimetry test.

https://doi.org/10.5935/0004-2749.20210034 130 downloads

Predictors of gaming disorder in children and adolescents: a school-based study
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Ferreira, Felipe de M.

; Bambini, Beatriz B.

; Tonsig, Gabriela K.

; Fonseca, Lais

; Picon, Felipe A.

; Pan, Pedro M.

; Salum, Giovanni A.

; Jackowski, Andrea

; Miguel, Eurípedes C.

; Rohde, Luis A.

; Bressan, Rodrigo A.

; Gadelha, Ary

Brazilian Journal of Psychiatry

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jun 2021, Volume 43 N. 3 Pages 289 - 292

Abstract: En | Text: En | PDF: En

Objective: To determine whether psychiatric and gaming pattern variables are associated with gaming disorder in a school-based sample. Methods: We analyzed data from the Brazilian High-Risk Cohort for Psychiatric Disorders, a community sample aged 10 to 18, using questionnaires on gaming use patterns. We applied the Gaming Addiction Scale to diagnose gaming disorder and the Development and Well-Being Behavior Assessment for other diagnoses. Results: Out of 407 subjects, 83 (20.4%) fulfilled the criteria for gaming disorder. More role-playing game players were diagnosed with gaming disorder that any other genre. Gaming disorder rates increased proportionally to the number of genres played. Playing online, being diagnosed with a mental disorder, and more hours of non-stop gaming were associated with higher rates of gaming disorder. When all variables (including age and gender) were considered in a logistic regression model, the number of genres played, the number of non-stop hours, the proportion of online games, and having a diagnosed mental disorder emerged as significant predictors of gaming disorder. Conclusion: Each variable seems to add further risk of gaming disorder among children and adolescents. Monitoring the length of gaming sessions, the number and type of genres played, time spent gaming online, and behavior changes may help parents or guardians identify unhealthy patterns of gaming behavior.

https://doi.org/10.1590/1516-4446-2020-0964 336 downloads

Equidade entre Sexos no Acesso à Reperfusão no Infarto Agudo do Miocárdio: Um Longo Caminho a ser Percorrido
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Fraga, Clara L.

; Macedo, Frederico V. B.

; Rocha, Rodrigo T. L.

; Ferreira Filho, Domingos Sávio G.

; Nascimento, Bruno R.

Arquivos Brasileiros de Cardiologia

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apr 2021, Volume 116 N. 4 Pages 704 - 705

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

https://doi.org/10.36660/abc.20210082 194 downloads

Insecticide spray drift reduction with different adjuvants and spray nozzles
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Marubayashi, Rodrigo Y. P.

; Oliveira, Rone B. de

; Ferreira, Marcelo da C.

; Roggia, Samuel

; Moraes, Eder D. de

; Saab, Otavio J. G. A.

Revista Brasileira de Engenharia Agrícola e Ambiental

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apr 2021, Volume 25 N. 4 Pages 282 - 287

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

RESUMO A deriva da pulverização de inseticidas pode proporcionar a redução da eficiência de controle e perda para o ambiente. Desta forma, foi conduzido um estudo com o objetivo de estudar o efeito de diferentes pontas de pulverização e adição de adjuvantes na calda inseticida, em relação ao espectro de gotas e deriva em túnel de vento. Os experimentos foram conduzidos no delineamento inteiramente casualizado, com quatro repetições, no esquema fatorial 5 × 3, constituído por cinco caldas, uma apenas com água e outras quatro com inseticida tiametoxam + lambda-cialotrina (sem adjuvante, Oro-solve, Wetcit Gold e Orobor N1), combinadas com três pontas de pulverização (AXI, JFC e J3D). Foi avaliado o espectro das gotas, através do diâmetro mediano volumétrico, amplitude relativa e porcentagem do volume de gotas com diâmetro ≤ 100 µm. A deriva foi avaliada em túnel de vento, a diferentes distâncias: 5, 10 e 15 m. Os dados foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey. Além disso, foram realizadas análises de componentes principais. A aplicação do inseticida com os adjuvantes combinados com as diferentes pontas de pulverização alterou o espectro de gotas e o risco da deriva. A ponta AXI e a J3D associada aos adjuvantes Oro-solve e Wetcit Gold apresentaram maiores diâmetros medianos volumétricos das gotas e deriva a 5 m.

ABSTRACT Insecticide spray drift can lead to reduced control efficiency and loss of product to the environment. Thus, we conducted a study to evaluate the effect of different spray nozzles and the addition of adjuvants in insecticide spray on the resulting droplet spectrum and wind tunnel drift. All experiments were conducted in a completely randomized design with four repetitions using a 5 × 3 factorial scheme. Five spraying solutions were studied; one contained only water and the other four comprised thiamethoxam + lambda-cyhalothrin (no adjuvant, Oro-solve, Wetcit Gold, and Orobor N1), in combination with three spray nozzles (AXI, JFC, and J3D). The droplet spectrum was evaluated through the volumetric median diameter, relative amplitude, and percentage of the droplet volume with diameter ≤ 100 µm. The drifts were evaluated in a wind tunnel at 5, 10, and 15 m. Data were subjected to analysis of variance and means were compared using the Tukey’s test. In addition, a principal component analysis was performed. Application of the insecticide with the adjuvants combined with the different nozzles changed the droplet spectrum and the risk of drift. The AXI nozzle and the J3D associated with the Oro-solve and Wetcit Gold adjuvants resulted in a greater volumetric median diameter of the droplets and drifts were observed at 5 m.

https://doi.org/10.1590/1807-1929/agriambi.v25n4p282-287 278 downloads

10.

Anti-Brucella canis antibodies in dogs naturally infected with Leishmania infantum and associated histological alterations in the genital tract
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BOECHAT, VIVIANE C.

; PEREIRA, SANDRO A.

; MENDES JÚNIOR, ARTUR A.V.

; VICENTE, ACÁCIA F.

; MEGID, JANE

; DASSO, MAURÍCIO G.

; RODRIGUES, ROGERIO O.

; MIRANDA, LUCIANA F.C.

; FIGUEIREDO, FABIANO B.

; FERREIRA, LUIZ C.

; TELES-DE-FREITAS, RAYANE

; BRUNO, RAFAELA V.

; MENEZES, RODRIGO C.

Anais da Academia Brasileira de Ciências

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2021, Volume 93 elocation e20201682

Abstract: En | Text: En | PDF: En

Abstract In canine visceral leishmaniasis, coinfections can aggravate the disease. Our aim was to investigate Brucella canis in dogs infected with Leishmania infantum. One hundred and six L. infantum-seropositive dogs were submitted to serology for B. canis, PCR for B. canis and L. infantum, and histopathological analysis of the genital tract. Anti-B. canis antibodies were detected in seven dogs whose clinical signs, L. infantum load and histological alterations were similar to those of seronegative animals. The circulation of anti-B. canis antibodies was low but demonstrates the exposure of dogs to this bacterium in a visceral leishmaniasis-endemic area.

https://doi.org/10.1590/0001-3765202120201682 1 downloads

11.

Compact Ultra-Wide-Band HI Monopole Antenna Loaded with C-Shaped Parasitic Elements for DVB-T and LTE Applications
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de Alcântara Neto, Miércio C.

; Cavalcante, Gervásio P. S.

; de Oliveira, Rodrigo M. S.

; Ribeiro, Fábio F.

; Ferreira, Flávio H. C. S.

; Barros, Fabrício J. B.

; de Almeida, José F. S.

Journal of Microwaves, Optoelectronics and Electromagnetic Applications

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sep 2020, Volume 19 N. 3 Pages 366 - 378

Abstract: En | Text: En | PDF: En

Abstract In this work, a compact ultra-wide-band microstrip antenna loaded with C-shaped parasitic elements, for Digital Video Broadcasting - Terrestrial (DVB-T) and LTE 450 / 700 signal reception, is designed and presented. The proposed antenna is named “HI Monopole”, and its geometry has been designed to be simple, lightweight, and compact. Fabrication process is inexpensive and suitable for electronic gadgets. The HI Monopole operates with ultra-wide bandwidth characteristics, encompassing Digital Video Broadcasting - Terrestrial (DVB-T) standard (470-890 MHz), LTE-450 and LTE-700 bands. This feature has been accomplished by inserting an indent in its ground plane, adjusting dimensions of the feeding line, and adding two C-shaped parasite elements onto the region posterior to the antenna's main radiating element. It was verified via electromagnetic measuring that this device is capable of covering the 429-1022 MHz range. Hence, its total bandwidth is 593 MHz. The superior and inferior cutoff frequencies have been defined using the -10 dB return loss reference level. Therefore, the proposed antenna can be employed for receiving DTV and LTE signals broadcasted in any country, independently of its adopted standard.

https://doi.org/10.1590/2179-10742020v19i3841 642 downloads

12.

Electroanalytical Method for Determination of Trace Metals in Struvite Using Electrochemically Treated Screen-Printed Gold Electrodes
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Vasconcellos, Maria L. S.

; Rocha, Diego P.

; Castro, Sílvia V. F.

; Silva, Luiz R.G. e

; Muñoz, Rodrigo A. A.

; Freitas, Marcos B. J. G.

; Ferreira, Rafael Q.

Journal of the Brazilian Chemical Society

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sep 2020, Volume 31 N. 9 Pages 1873 - 1882

Abstract: En | Text: En | PDF: En

We present an electroanalytical method using square-wave anodic stripping voltammetry on electrochemically-treated screen-printed gold electrodes to the simultaneous determination of lead(II), copper(II) and mercury(II) in struvite (natural fertilizer produced from urine). Electrochemical treatment via cyclic voltammetry of the working electrodes increased surface rugosity that improved the electroanalytical responses for the three metals. Under optimized conditions and using a deposition time of 90 s, the proposed method presented the following limit of detection values: 1.3 µg L-1 for lead(II), 2.0 µg L-1 for copper(II) and 0.9 µg L-1 for mercury(II). Struvite samples were easily dissolved in supporting electrolyte solution (0.05 mol L-1 HCl). Satisfactory recovery values between 91 and 111% were obtained for the analysis of spiked samples. Hence, we can infer that the proposed electroanalytical method is an effective alternative for the determination of trace metals, since it provides precise and accurate direct analyses, with rapid responses without interference from sample matrix and enabling in field analysis.

https://doi.org/10.21577/0103-5053.20200081 404 downloads

13.

Effect of aqueous extracts of Brachiaria decumbens on the development of ornamental pepper
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Rodrigo Krause, Marcelo

; Aparecida Merlo Meneghelli, Lorena

; Merlo Meneghelli, Caroline

; Matiello, Hediberto Nei

; Ferreira Nascimento, Mayana

Agronomía Colombiana

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apr 2020, Volume 38 N. 1 Pages 53 - 60

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

RESUMEN El uso de promotores naturales de crecimiento de plantas puede ser una alternativa efectiva, sostenible y económica, que reduce los costos de insumos para la producción de pimentón ornamental. Por lo tanto, el objetivo de este estudio fue evaluar el efecto del extracto acuoso de Brachiaria decumbens sobre el crecimiento del pimentón ornamental (Capsicum frutescens). El experimento se llevó a cabo en el sector de viveros de plantas del Instituto Federal de Espírito Santo (IFES), ubicado en el municipio de Santa Teresa, en la región de Serrana del estado de Espírito Santo (Brasil). Se utilizó un diseño de bloques al azar con cuatro repeticiones en un esquema factorial 4x2, con cuatro dosis del extracto de Brachiaria decumbens (0, 50, 75 y 100%) y dos métodos de aplicación (aplicación edáfica o spray foliar). El número de días para la floración, altura de planta, número de hojas, número de frutos, área foliar, y masa seca de frutos, raíz, brote y total se determinaron. Según los resultados, las variables número de frutos y masa seca de la raíz no mostraron interacción, encontrando los mejores resultados con la aplicación edáfica en comparación con la aplicación foliar. Al considerar la interacción, la aplicación del 100% del extracto redujo el número de días de floración tanto para la aplicación foliar como para el edáfica. Para las variables de crecimiento, esta misma dosis promovió los mejores resultados para la mayoría de las variables. Basándose en los resultados, se recomienda la dosis del 100% de extracto de B. decumbens aplicado por el método edáfico para reducir el número de días para la floración y promover un mejor desarrollo del pimentón ornamental.

ABSTRACT The use of natural plant growth promoters can be an effective, sustainable, and low-cost alternative to reduce input costs for the production of ornamental pepper. Thus, the objective of this study was to evaluate the effect of Brachiaria decumbens aqueous extract on the growth of ornamental pepper (Capsicum frutescens). The experiment was carried out in the Plant Nursery sector of the Federal Institute of Espirito Santo (IFES), located in the municipality of Santa Teresa, in the Serrana region of the Espirito Santo State (Brazil). The study was conducted using a randomized block design (RBD) with four replicates in a 4x2 factorial scheme with four doses of the Brachiaria decumbens extract (0, 50, 75 and 100%) and two application methods (edaphic application or foliar sprays). The number of days to flowering, plant height, leaf number, fruit number, leaf area, fruit, root, shoot, and total dry mass were determined. According to the results, the variables number of fruits and root dry mass had no significant effect on the interaction, with the best results found with the edaphic application when compared to the foliar sprays. When considering interaction, the application of 100% of the extract reduced the number of days to flowering for both edaphic application and foliar sprays. For growth variables, this same dose promoted the best results for most of the variables. Based on the results, the edaphic application of B. decumbens at 100% dosage is recommended to reduce the number of days to flowering and promote better development of ornamental pepper.

https://doi.org/10.15446/agron.colomb.v38n1.79443 319 downloads

14.

Comment on the study Coronary Artery Bypass Surgery in Brazil: Analysis of the National Reality Through the Bypass Registry that was presented at the 46th Congress of the Brazilian Society of Cardiovascular Surgery, Nova Lima, BH, Brazil, April 5 and 6, 2019
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Dallan, Luís Alberto O.

; Paez, Rodrigo Pereira

; Hossne Junior, Nelson Américo

; Santo, José Amalth do Espírito

; Berwanger, Otavio

; Santos, Renato Hideo Nakagawa

; Kalil, Renato Abdala Karam

; Jatene, Fabio B.

; Cavalcanti, Alexandre Biasi

; Zilli, Alexandre Cabral

; Bettiati Jr, Luiz Carlos

; Figueira, Fernando Augusto Marinho dos Santos

; D’Azevedo, Stephanie Steremberg Pires

; Soares, Marcelo José Ferreira

; Fernandes, Marcio Pimentel

; Ardito, Roberto Vito

; Bogdan, Renata Andrea Barberio

; Campagnucci, Valquíria Pelisser

; Nakasako, Diana

; Rodrigues, Clarissa Garcia

; Rodrigues Junior, Anilton Bezerra

; Cascudo, Marcelo Matos

; Atik, Fernando Antibas

; Lima, Elson Borges

; Nina, Vinicius José da Silva

; Heluy, Renato Albuquerque

; Azeredo, Lisandro Gonçalves

; Henrique Junior, Odilon Silva

; Mendonça, José Teles de

; Silva, Katharina Kelly de Oliveira Gama

; Pandolfo, Marcelo

; Lima Júnior, José Dantas de

; Faria, Renato Max

; Santos, Jonas Gonçalves dos

; Coelho, Guilherme Henrique Biachi

; Pereira, Sergio Nunes

; Senger, Roberta

; Buffolo, Enio

; Caputi, Guido Marco

; Oliveira, Juliana Aparecida Borges de

; Gomes, Walter J.

Brazilian Journal of Cardiovascular Surgery

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aug 2019, Volume 34 N. 4 Pages 504 - 506

Abstract: En | Text: En | PDF: En

https://doi.org/10.21470/1678-9741-2019-0606 335 downloads

15.

Coronary Artery Bypass Surgery in Brazil: Analysis of the National Reality Through the BYPASS Registry
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Paez, Rodrigo Pereira

; Hossne Junior, Nelson Américo

; Santo, José Amalth do Espírito

; Berwanger, Otavio

; Santos, Renato Hideo Nakagawa

; Kalil, Renato Abdala Karam

; Jatene, Fabio B.

; Cavalcanti, Alexandre Biasi

; Zilli, Alexandre Cabral

; Bettiati Jr, Luiz Carlos

; Figueira, Fernando Augusto Marinho dos Santos

; D'Azevedo, Stephanie Steremberg Pires

; Soares, Marcelo José Ferreira

; Fernandes, Marcio Pimentel

; Ardito, Roberto Vito

; Bogdan, Renata Andrea Barberio

; Campagnucci, Valquíria Pelisser

; Nakasako, Diana

; Rodrigues, Clarissa Garcia

; Rodrigues Junior, Anilton Bezerra

; Cascudo, Marcelo Matos

; Atik, Fernando Antibas

; Lima, Elson Borges

; Nina, Vinicius José da Silva

; Heluy, Renato Albuquerque

; Azeredo, Lisandro Gonçalves

; Henrique Junior, Odilon Silva

; Mendonça, José Teles de

; Silva, Katharina Kelly de Oliveira Gama

; Pandolfo, Marcelo

; Lima Júnior, José Dantas de

; Faria, Renato Max

; Santos, Jonas Gonçalves dos

; Coelho, Guilherme Henrique Biachi

; Pereira, Sergio Nunes

; Senger, Roberta

; Buffolo, Enio

; Caputi, Guido Marco

; Oliveira, Juliana Aparecida Borges de

; Gomes, Walter J.

Brazilian Journal of Cardiovascular Surgery

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apr 2019, Volume 34 N. 2 Pages 142 - 148

Abstract: En | Text: En | PDF: En

Abstract Introduction: Coronary artery bypass grafting (CABG) is the most frequently performed heart surgery in Brazil. Recent international guidelines recommend that national societies establish a database on the practice and results of CABG. In anticipation of the recommendation, the BYPASS Registry was introduced in 2015. Objective: To analyze the profile, risk factors and outcomes of patients undergoing CABG in Brazil, as well as to examine the predominant surgical strategy, based on the data included in the BYPASS Registry. Methods: A cross-sectional study of 2292 patients undergoing CABG surgery and cataloged in the BYPASS Registry up to November 2018. Demographic data, clinical presentation, operative variables, and postoperative hospital outcomes were analyzed. Results: Patients referred to CABG in Brazil are predominantly male (71%), with prior myocardial infarction in 41.1% of cases, diabetes in 42.5%, and ejection fraction lower than 40% in 9.7%. The Heart Team indicated surgery in 32.9% of the cases. Most of the patients underwent cardiopulmonary bypass (87%), and cardioplegia was the strategy of myocardial protection chosen in 95.2% of the cases. The left internal thoracic artery was used as a graft in 91% of the cases; the right internal thoracic artery, in 5.6%; and the radial artery in 1.1%. The saphenous vein graft was used in 84.1% of the patients, being the only graft employed in 7.7% of the patients. The median number of coronary vessels treated was 3. Operative mortality was 2.8%, and the incidence of cerebrovascular accident was 1.2%. Conclusion: CABG data in Brazil provided by the BYPASS Registry analysis are representative of our national reality and practice. This database constitutes an important reference for indications and comparisons of therapeutic procedures, as well as to propose subsequent models to improve patient safety and the quality of surgical practice in the country.

https://doi.org/10.21470/1678-9741-2018-0313 1270 downloads

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