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ABSTRACT Lettuce is a leafy vegetable sensitive to salinity, and under saline stress conditions it presents nutritional imbalance, mainly in calcium absorption. Thus, the objective was to evaluate the effect of enriching the nutrient solution with calcium nitrate in solutions prepared with saline water in the lettuce crop. A completely randomized design was used, with five treatments and four replicates. The treatments were represented by five nutrient solutions [S1 - standard nutrient solution (SNP); S2 - SNP + NaCl (3.5 dS m-1); S3 - S2 + Ca (NO3)2 (50% = 6.86 mmol L-1); S4 - S2 + Ca(NO3)2 (100% = 9.15 mmol L-1); S5 - S2 + Ca(NO3)2 (150% = 11.43 mmol L-1)] in lettuce from the curly group, cv. Elba. After preparing the nutrient solutions, the solutions had the following electrical conductivities: 1.8 (S1); 4.8 (S2); 5.4 (S3); 6.0 (S4); 6.6 (S5) dS m-1. Variables of growth, nutrition and postharvest quality of lettuce were evaluated. With the exception of stem diameter, number of total leaves, plant pH and vitamin C content, the other variables were affected by the extra addition of Ca(NO3)2 in the nutrient solutions. The lettuce cv Elba grown in coconut fiber is tolerant to the salinity of 4.8 dS m-1 (S2). In conditions where the use of saline water with 3.5 dS m-1 for the preparation of the nutrient solution is unavoidable, the use of extra doses of Ca(NO3)2 in the lettuce crop is not recommended.

RESUMO A alface é uma hortaliça folhosa sensível à salinidade, e em condições de estresse salino apresenta crescimento reduzido e desequilíbrio nutricional, principalmente na absorção de cálcio. Assim, objetivou-se avaliar o efeito do enriquecimento da solução nutritiva com nitrato de cálcio em soluções preparadas com água salina na cultura da alface. Utilizou-se o delineamento inteiramente casualizado, com cinco tratamentos e quatro repetições. Os tratamentos foram representados por cinco soluções nutritivas [S1 - solução nutritiva padrão (SNP); S2 - SNP + NaCl (3,5 dS m-1); S3 - S2 + Ca(NO3)2 (50% = 6,86 mmol L-1); S4 - S2 + Ca(NO3)2 (100% = 9,15 mmol L-1); S5 - S2 + Ca (NO3)2 (150% = 11,43 mmol L-1)] em alface do grupo crespa, cv. Elba. Após o preparo das soluções nutritivas, as soluções apresentaram as seguintes condutividades elétricas: 1,8 (S1); 4,8 (S2); 5,4 (S3); 6,0 (S4); 6,6 (S5) dS m-1. Foram avaliadas variáveis de crescimento, nutrição e qualidade pós-colheita da alface. Com exceção do diâmetro do caule, número de folhas totais, pH da planta e teor de vitamina C, as demais variáveis foram afetadas pela adição extra de Ca(NO3)2 nas soluções nutritivas. A alface cv. Elba cultivada em fibra de coco é tolerante à salinidade de 4,8 dS m-1 (S2). Em condições onde o uso de água salina com 3,5 dS m-1 para o preparo da solução nutritiva é inevitável, não é recomendado o uso de doses extras de Ca(NO3)2 na cultura da alface.

https://doi.org/10.1590/1807-1929/agriambi.v27n9p712-718

Inoculation methods of Azospirillum brasilense in lettuce and arugula in the hydroponic system
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Oliveira, Carlos E. da S.

; Gato, Isabela M. B.

; Moreira, Vitoria de A.

; Jalal, Arshad

; Oliveira, Thaissa J. S. S.

; Oliveira, Julia R.

; Fernandes, Guilherme C.

; Teixeira Filho, Marcelo C. M.

Revista Brasileira de Engenharia Agrícola e Ambiental

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Sep 2023, Volumen 27 Nº 9 Paginas 653 - 662

Resumen: En Pt | Texto: En Pt | PDF: En | PDF: Pt

ABSTRACT: Lettuce and arugula are the most cultivated leafy vegetables in hydroponic systems in the world, and the little information about Azospirillum brasilense effects in research in this system makes it necessary to verify the best method of inoculation of these bacteria. Therefore, this study aimed to verify the beneficial effects of inoculation methods of A. brasilense on plant growth and nutrition of lettuce and arugula grown in the hydroponic system. The study was conducted in a greenhouse with 30% shading. A randomized block design with five replicates in a 4 × 2 factorial scheme was used. Four A. brasilense inoculation methods (non-inoculated, foliar application, nutrient solution, and nutrient solution + foliar application) and two leafy vegetable species - arugula and lettuce - were evaluated. All inoculation methods improved plant height, shoot fresh and dry mass, root fresh and dry mass, fresh leaf yield, leaf chlorophyll index, accumulation of nitrogen, potassium, calcium, sulfur, phosphorus, iron, manganese, and copper and reduced nitrate accumulation in shoot and root of arugula and lettuce. Inoculation via nutrient solution + foliar application of A. brasilense is the most suitable for hydroponic arugula cultivation because it provides greater fresh leaf yield. All inoculation methods increased leaf yield in hydroponic lettuce. Hydroponic arugula and lettuce plants showed greater accumulation of nutrients and plant growth with less nitrate accumulation in the shoot under inoculation with A. brasilense.

RESUMO A alface e a rúcula são as hortaliças folhosas mais cultivadas em sistemas hidropônicos no mundo, e as poucas informações sobre os efeitos do Azospirillum brasilense em pesquisas neste sistema torna-se necessário verificar o melhor método de inoculação dessas bactérias. Portanto, o objetivo deste estudo foi verificar os efeitos benéficos de métodos de inoculação de A. brasilense em alface e rúcula no crescimento e nutrição das plantas em sistema hidropônico. O estudo foi conduzido em casa de vegetação com 30% de sombreamento. Foi usado o delineamento em blocos ao acaso com 5 repetições em esquema fatorial 4 × 2, com quatro métodos de inoculação de A. brasilense (não inoculado, foliar, solução nutritiva e solução nutritiva + inoculação foliar) e o segundo fator foi a aplicação em rúcula e alface. Todos os métodos de inoculação melhoraram a altura da planta, massa fresca e seca da parte aérea, massa fresca e seca da raiz, rendimento da planta, índice de clorofila foliar, acúmulo de nitrogênio, potássio, cálcio, enxofre, fósforo, ferro, manganês, cobre e redução do acúmulo de nitrato na parte aérea e raízes de rúcula e alface. A inoculação via solução nutriente + inoculação foliar de A. brasilense é a mais indicada para o cultivo hidropônico de rúcula, pois proporciona maior rendimento de folhas, e todos os métodos de inoculação foram capazes de aumentar o rendimento de folhas em alface hidropônica. Plantas hidropônicas de rúcula e alface apresentaram maior acúmulo de nutrientes e crescimento das plantas com menor acúmulo de nitrato na parte aérea sob inoculação com A. brasilense.

https://doi.org/10.1590/1807-1929/agriambi.v27n9p653-662

A prospective validation and comparison of three multivariate models for prediction of difficult intubation in adult patients
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Bicalho, Gustavo P.

; Bessa Jr., Roberto C.

; Cruvinel, Marcos Guilherme C.

; Carneiro, Fabiano S.

; Castilho, Jayme B.

; Castro, Carlos Henrique V.

Brazilian Journal of Anesthesiology

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Abr 2023, Volumen 73 Nº 2 Paginas 153 - 158

Resumen: En | Texto: En | PDF: En

Abstract Purpose Several bedside clinical tests have been proposed to predict difficult tracheal intubation. Unfortunately, when used alone, these tests show less than ideal prediction performance. Some multivariate tests have been proposed considering that the combination of some criteria could lead to better prediction performance. The goal of our research was to compare three previously described multivariate models in a group of adult patients undergoing general anesthesia. Methods This study included 220 patients scheduled for elective surgery under general anesthesia. A standardized airway evaluation which included modified Mallampati class (MM), thyromental distance (TMD), mouth opening distance (MOD), head and neck movement (HNM), and jaw protrusion capacity was performed before anesthesia. Multivariate models described by El-Ganzouri et al., Naguib et al., and Langeron et al. were calculated using the airway data. After anesthesia induction, an anesthesiologist performed the laryngoscopic classification and tracheal intubation. The sensitivity, specificity, and receiver operating characteristic (ROC) curves of the models were calculated. Results The overall incidence of difficult laryngoscopic view (DLV) was 12.7%. The area under curve (AUC) for the Langeron, Naguib, and El-Ganzouri models were 0.834, 0.805, and 0.752, respectively, (Langeron > El-Ganzouri, p= 0.004; Langeron = Naguib, p= 0.278; Naguib = El-Ganzouri, p= 0.101). The sensitivities were 85.7%, 67.9%, and 35.7% for the Langeron, Naguib, and El-Ganzouri models, respectively. Conclusion The Langeron model had higher overall prediction performance than that of the El-Ganzouri model. Additionally, the Langeron score had higher sensitivity than the Naguib and El-Ganzouri scores, and therefore yielded a lower incidence of false negatives.

https://doi.org/10.1016/j.bjane.2021.07.028

Perspectives in Training and Professional Practice of Cardiac Surgery in Latin America
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Marin-Cuartas, Mateo

; Vervoort, Dominique

; Contreras, Juan Roberto

; Garcia-Villareal, Ovidio A.

; Escobar, Alejandro

; Ferrari, Javier

; Quintana, Eduard

; Sadaba, Rafael

; Mestres, Carlos A.

; Carosella, Victorio C.

; Almeida, Rui M. S.

; Dayan, Victor

Brazilian Journal of Cardiovascular Surgery

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Feb 2023, Volumen 38 Nº 1 Paginas 1 - 14

Resumen: En | Texto: En | PDF: En

ABSTRACT Introduction: There is a lack of information about cardiac surgery training and professional practice in Latin American (LATAM) countries. This study is the first comparative analysis of cardiac surgical training and professional practice across LATAM and provides the fundamentals for future academic projects of the Latin American Association of Cardiac and Endovascular Surgery (LACES). Methods: International survey-based comparative analysis of the training and professional practice of cardiac surgeons across LATAM. Trainees (residents/fellows) and staf (graduated) surgeons from LATAM countries were included. Results: A total of 289 respondents (staf surgeons N=221 [76.5%]; residents/fellows N=68 [23.5%]) from 18 different countries participated in the survey. Most surgeons (N=92 [45.3%]) reported being unsatisfied with their salaries. Most respondents (N=181 [62.6%]) stated that it was difficult to obtain a leadership position, and 149 (73.8%) stated that it was difficult to find a job after completing training. Only half of the trainee respondents (N=32 [47.1%]) reported that their program had all resident spots occupied. Only 22.1% (N=15) of residents/fellows were satisfied with their training programs. The majority (N=205 [70.9%]) of respondents would choose cardiac surgery as their specialty again. Most surgeons (N=129 [63.9%]) and residents/fellows (N=52 [76.5%]) indicated that the establishment of a LATAM cardiac surgery board examination would be beneficial. Conclusion: Modernization and standardization of training, as well as greater access to opportunities, may be required in LATAM to increase professional satisfaction of cardiac surgeons and to reduce disparities in the specialty. Such changes may enhance the regional response to the dynamic challenges in the feld.

https://doi.org/10.21470/1678-9741-2022-0125

Genetic diversity of the species Cnesterodon hypselurus (Cyprinodontiformes: Poeciliidae) in Cinzas River basin: new record and headwater capture evidences
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Ferreira, Dhiego G.

; Galindo, Bruno A.

; Souza, Tais C. de

; Pereira, Leonardo B.

; Bernardes, Victor A. P.

; Marques, Ana J. C.

; Frantine-Silva, Wilson

; Kotelok-Diniz, Thais

; Aggio, Carlos E. G.

; Apolinário-Silva, Caroline

; Zanatta, Augusto S.

; Sofia, Silvia H.

Neotropical Ichthyology

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2023, Volumen 21 Nº 1 elocation e230007

Resumen: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract Cnesterodon hypselurus is a small fish that has a restricted distribution in southern Brazil, including headwaters of the Tibagi and Itararé river basins (Upper Paraná River). This study reported C. hypselurus in a headwater of Cinzas River basin, where there were no previous records of this species, and employed microsatellite loci and mitochondrial haplotypes in a population genetic analysis. A total of 57 specimens was analyzed, including 30 from Cinzas River basin, 25 from Itararé River basin and two from Tibagi River basin. Results indicated low genetic diversity levels (HE = 0.334 and h = 0.246) for the sample from Cinzas River, suggesting reflections of a founder effect after the species had dispersed from one watershed to another, possibly by headwater captures. Since different populations were detected between the Cinzas and Itararé rivers (DEST = 0.248, P-value < 0.05) and other occurrence sites are still unknown in the Cinzas River basin, the data herein have great relevance and should be taken into account in future management and conservation actions, as well as in evolutionary studies of C. hypselurus.

Resumo Cnesterodon hypselurus é um pequeno peixe que possui distribuição restrita no sul do Brasil, incluindo cabeceiras das bacias dos rios Tibagi e Itararé (alto rio Paraná). Este estudo reportou C. hypselurus na cabeceira da bacia do rio das Cinzas, onde não havia registros prévios desta espécie, e empregou locos microssatélites e haplótipos mitocondriais em uma análise genética de populações. Um total de 57 espécimes foi analisado, incluindo 30 do rio das Cinzas, 25 da bacia do rio Itararé e dois da bacia do rio Tibagi. Os resultados indicaram baixos níveis de diversidade genética (HE = 0,334 e h = 0,246) para a amostra do rio das Cinzas, sugerindo reflexos de um efeito fundador após a espécie ter dispersado de uma bacia para a outra, possivelmente a partir de captura de cabeceiras. Uma vez que diferentes populações foram detectadas entre os rios das Cinzas e Itararé (DEST = 0,248, valor de P < 0,05) e que outros pontos de ocorrência ainda são desconhecidos na bacia do rio das Cinzas, os dados do presente estudo mostram grande relevância e deveriam ser considerados em futuras ações de manejo e conservação, bem como em estudos evolutivos de C. hypselurus.

https://doi.org/10.1590/1982-0224-2023-0007

Acai Residue as an Ecologic Filler to Reinforcement of Natural Rubber Biocomposites
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Araújo, Samara S.

; Santos, Gleyson T. A.

; Tolosa, Gabrieli R.

; Hiranobe, Carlos T.

; Budemberg, Eduardo R.

; Cabrera, Flávio C.

; Silva, Michael J. da

; Paim, Leonardo L.

; Job, Aldo E.

; Santos, Renivaldo J. dos

Materials Research

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2023, Volumen 26 Supl. 1 elocation e20220505

Resumen: En | Texto: En | PDF: En

The biodiversity of plant resources is a renewable source that can use as a sustainable component in various applications. The use of vegetable waste as a filler element in polymeric composites is part of the solid waste management policy and the sustainable development of agribusiness. In this work, the natural rubber composites were prepared with acai seed in proportions of 0, 10, 20, 30, 40, and 50 phr (per hundred rubber). The composites were homogenized in an open cylinder mixer and characterized by rheometric, morphological, mechanical, and thermal tests. The addition of the organic fillers significantly reduced the vulcanization process time. Thermogravimetric analysis and infrared spectroscopy showed that the composites were thermally stable and showed no structure changes after the vulcanization process, respectively. The Lorenz-Parks method's evaluation of matrix/filler interactions showed a strong interaction between NR/Acai. The new biocomposite can replace non-ecological composites economically and sustainably.

https://doi.org/10.1590/1980-5373-mr-2022-0505

Evaluation of the properties of natural rubber bio composite and guava residue (Psidium guajava L.) as sustainable application
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Hiranobe, Carlos T.

; Silva, Alex R. da

; Cruz, Marco A. G.

; Canhada, João C. S.

; Araújo, Samara S.

; Rocha, José A.

; Santos, Harison F. dos

; Ribeiro, Gabriel D.

; Tolosa, Gabrieli R.

; Santos, Gleyson T. A.

; Budemberg, Eduardo R.

; Azevedo, Cláudia G. de

; Santos, Renivaldo J. dos

Materials Research

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2023, Volumen 26 Supl. 1 elocation e20220515

Resumen: En | Texto: En | PDF: En

In juice and pulp extraction, about 10% of fruit waste is generated, which often ends up in landfills that can cause environmental damage, serve as food for insects and rodents, and cause health problems for humans. In this work, micronized guava waste was used as a filler in vulcanized compounds in natural rubber. Mechanical properties such as hardness, tensile strength, tear resistance, and abrasion resistance were evaluated, as well as thermal properties such as thermogravimetric analysis, in addition to scanning electron microscopy, X-ray fluorescence, elemental analysis, and infrared spectroscopy. According to the results of the mechanical properties tests, the addition of up to 20 phr of the filler tends to improve the tensile strength of the composites, resulting in an increase in the density of cross-links obtained through the Flory-Rehner method. The thermal behavior analyzed by TGA and FTIR spectra were not affected by the incorporation of fillers.

https://doi.org/10.1590/1980-5373-mr-2022-0515

Determination of Trifloxystrobin in Soy Grape Juice and Natural Water by Photo-Induced Fluorescence and High-Performance Liquid Chromatography
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Almeida, Joseany M. S.

; Macedo, Rosana C.

; Cunha, Alessandra L. M. C. da

; Toloza, Carlos A. T.

; Aucélio, Ricardo Q.

Journal of the Brazilian Chemical Society

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2023, Volumen 34 Nº 12 Paginas 1877 - 1886

Resumen: En | Texto: En | PDF: En

A fluorescent (340/380 nm) photochemical product, identified at m/z 206 by mass spectrometry was obtained by photo-derivatization (15 s ultraviolet exposure) in water/acetonitrile 10/90 v/v. The photoproduct was used for indirect determination of trifloxystrobin in water and soy grape juice by high-performance liquid chromatography and fluorescence detection. Separation was made under isocratic conditions (acetonitrile/water 70/30% v/v, at 1.0 mL min 1 and 35 ºC) with trifloxystrobin photo-derivative eluting at 3.2 min. The influence of ultraviolet exposure was evaluated in short and long terms with photoproduct showing stability up to 120 min after 15 s of ultraviolet exposure. The limit of detection was 57 µg L-1 in water (87-109% recoveries). For soy grape juice, dispersive liquid-liquid micro-extraction was used to clean up and for pre-concentration (limit of detection of 9.5 µg kg 1 and 93-101% recoveries) attending to the maximum residue limits for citrus juices established by regulatory agencies. Potential interference by triazoles was evaluated.

https://doi.org/10.21577/0103-5053.20230080

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

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2023, Volumen 71 elocation e23046

Resumen: En | Texto: 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

10.

COVID-19 Outcome Prediction by Integrating Clinical and Metabolic Data using Machine Learning Algorithms
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Villagrana-Bañuelos, Karen E.

; Maeda-Gutiérrez, Valeria

; Alcalá-Rmz, Vanessa

; Oropeza-Valdez, Juan J.

; Herrera-Van Oostdam, Ana S.

; Castañeda-Delgado, Julio E.

; López, Jesús Adrián

; Borrego Moreno, Juan C.

; Galván-Tejada, Carlos E.

; Galván-Tejeda, Jorge I.

; Gamboa-Rosales, Hamurabi

; Luna-García, Huizilopoztli

; Celaya-Padilla, José M.

; López-Hernández, Yamilé

Revista de investigación clínica

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Dic 2022, Volumen 74 Nº 6 Paginas 314 - 327

Resumen: En | Texto: En | PDF: En

ABSTRACT Background: The coronavirus disease (COVID-19) is an infectious disease caused by the SARS-CoV-2 virus and is responsible for nearly 6 million deaths worldwide in the past 2 years. Machine learning (ML) models could help physicians in identifying high-risk individuals. Objectives: To study the use of ML models for COVID-19 prediction outcomes using clinical data and a combination of clinical and metabolic data, measured in a metabolomics facility from a public university. Methods: A total of 154 patients were included in the study. “Basic profile” was considered with clinical and demographic variables (33 variables), whereas in the “extended profile,” metabolomic and immunological variables were also considered (156 characteristics). A selection of features was carried out for each of the profiles with a genetic algorithm (GA) and random forest models were trained and tested to predict each of the stages of COVID-19. Results: The model based on extended profile was more useful in early stages of the disease. Models based on clinical data were preferred for predicting severe and critical illness and death. ML detected trimethylamine N-oxide, lipid mediators, and neutrophil/lymphocyte ratio as important variables. Conclusion: ML and GAs provided adequate models to predict COVID-19 outcomes in patients with different severity grades.

https://doi.org/10.24875/ric.22000182

11.

New Predation Records on Thoropa miliaris (Anura: Cycloramphidae), with a Review of Known Predators
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Oliveira, Henrique J.

; Nogueira, Carlos H. O.

; Amorim, Paulo S.

; Guaraldo, André C.

; Costa, Henrique C.

Revista latinoamericana de herpetología

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Dic 2022, Volumen 5 Nº 4 elocation e551

Resumen: Es En | Texto: Es En | PDF: Es | PDF: En

Resumen La rana de las piedras Thoropa miliaris (Cycloramphidae) es una especie saxícola endémica del Bosque Atlántico. La información sobre los posibles depredadores de esta especie es escasa en la literatura, un hecho posiblemente relacionado con la dificultad de registrar eventos de interacción entre predadores y presas. En este trabajo registramos diversos eventos predatorios oportunistas sobre T. miliaris por la serpiente Chironius laevicollis (Colubridae), por arañas del género Ctenus (Ctenidae) y por el ave Furnarius rufus (Furnariidae). Además, recopilamos los registros de depredación de las especies publicados hasta ahora.

Abstract The rock river frog Thoropa miliaris (Cycloramphidae) is a saxicolous species endemic to the Atlantic Forest. There is scarce literature on potential predators of this species, which is likely related to the difficulty of recording its predatory interactions. In this paper, we report opportunistic records of predation on T. miliaris by the snake Chironius laevicollis (Colubridae), spiders of the genus Ctenus (Ctenidae), and the bird Furnarius rufus (Furnariidae). In addition, we compiled the reports of predation on T. miliaris from current published data.

https://doi.org/10.22201/fc.25942158e.2022.4.551

12.

Valorization of Hesperidin from Citrus Residues: Evaluation of Microwave-Assisted Synthesis of Hesperidin-Mg Complex and Their Insecticidal Activity
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Silva, Danielle F. da

; Bomfim, João P. A.

; Marchi, Rafael C.

; Amaral, Jéssica C.

; Pinto, Luciano S.

; Carlos, Rose M.

; Ferreira, Antonio G.

; Forim, Moacir R.

; Fernandes, João B.

; Silva, Maria F. G. F. da

; Oliveira, Regiane C. de

; Buss, David

; Kirk, William D. J.

; Bruce, Toby J. A.

Journal of the Brazilian Chemical Society

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Jul 2022, Volumen 33 Nº 7 Paginas 772 - 782

Resumen: En | Texto: En | PDF: En

The aim of the current study was the valorization of hesperidin, the dominant flavonoid in citrus processing waste, by microwave-assisted synthesis of hesperidin-Mg complex, improving its antioxidant activity and insecticidal potential. Here we show, for the first time, that microwave-assisted synthesis of [Mg(hesp)2(phen)]OAc (1) (hesp: hesperidin, phen: phenanthroline) improve the reaction rate and yield. The nuclear magnetic resonance (NMR) experiments proved to be powerful tools for the identification of three isomers in metal complexes. Moreover, we explore the insecticidal potential of 1 and [Mg(phen)2(Isov)]OAc (2) (Isov : isovanillic acid) complexes against three insects. Complex 1 killed 80% of adults whitefly at 0.14 μmol L-1, and 2 76% at 0.36 μmol L-1. There was a total mortality of Spodoptera frugiperda with 2 at 0.39 μmol L-1, and 83% with 1 at 0.14 μmol L-1. Both have similar activity, and represent a novel group of insecticide for Bemisia tabaci and S. frugiperda; nevertheless, the benefits of both as Myzus persicae repellent require further evaluation.

https://doi.org/10.21577/0103-5053.20220050

13.

Documento de consenso sobre el uso de los iSGLT2 en el tratamiento de pacientes con diabetes mellitus tipo 2
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Garnica-Cuéllar, Juan C.

; Lavalle-González, Fernando J.

; Magaña-Serrano, José A.

; Almeda-Valdés, Paloma

; Cetina-Canto, José A.

; Chávez Iñíguez, Jonathan S.

; Garza-García, Carlos A.

; González-Chávez, Antonio

; González-Gálvez G, Guillermo

; Medina-Chávez, Juan H.

; Pimentel-Morales, Gela

; Sánchez-Pedraza, Valentín

Gaceta médica de México

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2022, Volumen 158 Nº spe1 Paginas 1 - 14

Resumen: En Es | Texto: En Es | PDF: En | PDF: Es

Abstract Although in recent years in Mexico the quality of diabetes mellitus (DM) care has improved and access to health services and medications has increased, there is a lack of adherence to the recommendations of the clinical guidelines, which could explain the poor glycemic control in many of the patients with DM. Sodium-glucose cotransporter type 2 (iSGLT2) inhibitors have been the last class of antidiabetic agents to receive approval from the Food and Drug Administration (FDA) and COFEPRIS (Mexico). In order to improve the use of SGLT2i in clinical practice in Mexico, this paper presents the recommendations issued by a panel of eleven Mexican experts based on the new published evidence for the treatment of patients with DM2.

Resumen Aunque en los últimos años en México ha mejorado la calidad de la atención de la diabetes mellitus (DM) y ha aumentado el acceso a servicios de salud y medicamentos, existe una falta de apego a las recomendaciones de las guías de práctica clínica, que podría explicar la falta de un control glucémico adecuado en muchos de los pacientes con DM. Los inhibidores del cotransportador de sodio-glucosa tipo 2 (iSGLT2) han sido la última clase de agentes antidiabéticos en recibir la aprobación de la Food and Drug Administration (FDA) y de la Comisión Federal para la Protección contra Riesgos Sanitarios de México (COFEPRIS). Con el fin de mejorar el uso de los iSGLT2 en la práctica clínica en México, en este documento se presentan las recomendaciones emitidas por un panel de 11 expertos mexicanos con base en las nuevas evidencias publicadas para el tratamiento de los pacientes con DM2.

https://doi.org/10.24875/gmm.m21000596 285 descargas

14.

Aprendizagem significativa com materiais educativos no ensino inclusivo de física
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Alves, Joao J. S.

; Souza, Eduardo V.

; Souza, Jonatas C. F.

; Moraes, Carlos E. F.

Revista de enseñanza de la física

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Dic 2021, Volumen 33 Supl. 1 Paginas 3 - 3

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo Este artigo apresenta uma sequencia didática com kits multissensoriais que podem servir como materiais potencialmente significativos de acordo com os moldes da Teoria da Aprendizagem Significativa de David Ausubel. Os autores desejam transformar a Física cada vez mais em uma Disciplina Inclusiva.

Abstract This paper presents a didactic sequence with Multisensory Kits that can serve as potentially meaningful materials according to the molds of David Ausubel's Meaningful Learning Theory. Authors look forward to turning Physics more and more into an Inclusive Discipline.

15.

Vegetable powders for the control of Sitophilus zeamais (Motschulsky) (Coleoptera: Curculionidae) in stored maize grains
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Marques, Sheury C.

; Gondim, Perla J. S.

; Pereira, Rosane R. C.

; Pereira, Carlos E.

Revista de Ciências Agrárias

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Sep 2021, Volumen 44 Nº 2-3 Paginas 91 - 100

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo Uma das principais causas de perdas na produção de grãos de milho é devido ao ataque de insetos durante seu armazenamento. Objetivou-se nesse trabalho investigar o potencial de ação inseticida de pós de Urtica urens L. e Piper aduncum L. sobre gorgulhos Sitophilus zeamais (Motschulsky) em grãos de milho. O ensaio foi realizado em laboratório, avaliando pós secos de folhas de U. urens e de P. aduncum a 3 %, em 80 g de grãos de milho infestados com 0, 8, 16 e 24 gorgulhos. Utilizou-se delineamento experimental completamente casualizado em esquema fatorial 4x3 com quatro repetições. O ensaio foi avaliado após 50 dias de armazenamento, por meio de: redução do peso dos grãos, porcentagem de grãos danificados pela ação dos gorgulhos, teor de água dos grãos, número de gorgulhos adultos emergidos e porcentagem de gorgulhos mortos. A aplicação de pós de P. aduncum e U. urens reduziu significativamente a percentagem de grãos danificados por S. zeamais. P. aduncum reduziu significativamente a perda de peso de grãos, o número de gorgulhos adultos emergidos e aumentou a mortalidade do gorgulho. Assim, o pó de P. aduncum mostrou ser promissor para o controle de S. zeamais em grãos de milho armazenados.

Abstract The attack by insects is one of the main causes of losses on maize during storage. The purpose of this research was to investigate the insecticidal potential action of Urtica urens L. and Piper aduncum L. powders on the maize weevils Sitophilus zeamais (Motschulsky) on stored maize. The experiment was carried out in the laboratory, with evaluation of the dry powder of U. urens leaves and P. aduncum at 3 %, and control without powder, in 80 g of maize grains infested with 0, 8, 16 and 24 maize weevil individuals. A completely randomized design was used on a 4x3 factorial scheme with four replications. The experiment was evaluated after 50 days of storage by: reduction of grain weight, percentage of grain damaged by maize weevils, grain moisture content, number of adult emerged maize weevil and mortality of maize weevil. The application of powders of P. aduncum and U. urens reduced significantly the grain damaged by S. zeamais. P. aduncum also caused a significant reduction of grain weight loss, of the number of adult emerged maize weevil and of increased the percentage of dead maize weevil. The powder of P. aduncum showed to be promising for the control of S. zeamais in stored maize grains.

https://doi.org/10.19084/rca.21617 2 descargas

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