Búsqueda | SciELO

ABSTRACT The collapse of the Fundão Dam in Mariana, MG, in 2015 introduced the challenge of using Technosol, a soil type formed by deposition of iron mining waste along the Doce River banks, for agricultural purposes. This study aimed to determine the optimal water depth for enhancing production of tropical forage, Megathyrsus maximus cv. Mombasa, when grown on iron ore tailings. Additionally, it sought to establish a crop coefficient applicable to the edaphoclimatic conditions of Viçosa, MG, Brazil. The experiment was conducted throughout the summer, fall, and winter of 2022, employing 21 drainage lysimeters. A completely randomized experimental design was adopted, featuring six treatment groups (plants in Technosol receiving water depths ranging from 20 to 120% of the crop’s evapotranspiration, as derived from the control treatment), along with a control group (plants in Latosol with a depth of 100%), each with three repetitions. Our findings showed that irrigation must replace 40% of the crop evapotranspiration. Moreover, cultivating in Technosol resulted in a reduction of productive capacity by 37.39% during the summer/fall and fall seasons. For Mombasa grass grown in Oxisol, crop coefficients of 1.2 during the summer and 1.5 during the fall and winter are advised.

RESUMO O rompimento da Barragem do Fundão em Mariana, MG, ocorrida em 2015, trouxe o desafio de usar o Tecnossolo (tipo de solo) formado pela deposição do rejeito de mineração de ferro nas margens do Rio Doce para agricultura. O objetivo desta pesquisa foi obter a lâmina de água para otimizar a produção da forragem tropical Megathyrsus maximum cv. Mombaça, cultivada em rejeito de mineração de ferro e determinar seu coeficiente de cultura para as condições edafoclimáticas de Viçosa, MG. O experimento foi realizado durante as estações de verão, outono e inverno do ano de 2022, com a utilização de 21 lisímetros de drenagem. O experimento foi distribuído em delineamento inteiramente casualizado com 6 tratamentos (plantas em Tecnossolo com lâminas variando de 20 a 120% da evapotranspiração da cultura, obtida do tratamento-testemunha) e adição de uma testemunha (plantas em Latossolo com lâmina de 100%) com três repetições. Recomenda-se irrigação com reposição de 40% da evapotranspiração da cultura. O cultivo em Tecnossolo diminuiu a capacidade produtiva em 37,39% nos ciclos das estações do verão/outono e outono. Recomenda-se os coeficientes de cultura de 1,2 no verão e 1,5 no outono e no inverno, para o capim-Mombaça cultivado em um Latossolo.

https://doi.org/10.1590/1807-1929/agriambi.v28n3e275196

Agronomic performance and estimated genetic diversity among soybean inbred lines based on quantitative traits
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Medeiros, Guilherme S.

; Cabral, Pablo D. S.

; Silva, Fernando H. L. e

; Freitas, Jôsie C. de O.

; Campos, Luís H. R. de

; Carrijo, Arthur M. M. F.

Revista Brasileira de Engenharia Agrícola e Ambiental

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

Mar 2024, Volumen 28 Nº 3 elocation e272048

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

ABSTRACT Although soybean is one of the most important agricultural commodities in the world, it has been losing genetic diversity in recent decades, due to the intense breeding process and reproduction method. Thus, the objective of this study was to evaluate the agronomic performance and estimate the genetic diversity among inbred lines, and identify promising crossings. A total of 66 soybean genotypes were evaluated, 61 of which were pre-commercial lines, and five commercial cultivars (AS3797, DESAFIO, M7110, M7739, M8210) as controls. The experimental design consisted of randomized blocks with three replicates. The distance matrix between the inbred lines was calculated by Mahalanobis distance and grouping by the unweighted pair group method with arithmetic mean (UPGMA). The maximum distance was 1,776.26 between cultivar M7110 and the G23 inbred line, and the minimum 1.50 between inbred lines G13 and G36, with an average distance of 364.40, demonstrating genetic diversity. The traits that contributed most to genetic divergence were number of days to flowering (66.7%) and physiological maturation (28.55%). Inbred lines G60 (higher grain yield), G51 and G33 (lower physiological maturation) and cultivar M7110 (greater divergence) stood out. Four groups were formed, with G1 having the highest grain yield and fewest days to flowering and physiological maturation. The indicated crossings are between G60, G57, CD2728, M7110, G33 and G32 (group G1) and G47 (group G4).

RESUMO A soja é uma das mais importantes comodities agrícolas mundiais, no entanto, devido ao intenso processo de melhoramento e sua forma de reprodução, vem perdendo diversidade genética ao longo das últimas décadas. Assim, o objetivo deste estudo foi avaliar o desempenho agronômico, estimar a diversidade genética entre as linhagens e identificar cruzamentos promissores. Para isto, foram avaliados 66 genótipos de soja, sendo 61 linhagens pré-comerciais e cinco cultivares comerciais (AS3797, DESAFIO, M7110, M7739, M8210) como controles. O delineamento experimental foi o de blocos ao acaso com três repetições. A matriz de distância entre as linhagens foi calculada pela distância de Mahalanobis e o agrupamento pelo método da ligação média entre grupos (UPGMA). A distância máxima foi de 1.776,26 entre as linhagens M7110 e G23, e a mínima de 1,50 entre as linhagens G13 e G36, sendo a distância média de 364,40, demonstrando a existência de diversidade genética. Os caracteres que mais contribuíram para a divergência genética foram número de dias para o florescimento (66,7%) e maturação fisiológica (28,55%). As linhagens G60 (maior produtividade de grãos), G51 e G33 (menor maturação fisiológica) e a cultivar M7110 (maior divergência) se destacaram. Formaram-se quatro grupos, sendo o grupo G1 com maior produtividade de grãos e menor número de dias para o florescimento e maturação fisiológica. Os cruzamentos indicados são entre G60, G57, CD2728, M7110, G33 e G32 (grupo G1) com a G47 (grupo G4).

https://doi.org/10.1590/1807-1929/agriambi.v28n3e272048

Guía de práctica clínica para el manejo del cáncer de pulmón de células pequeñas: enfermedad extensa
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Cabrera-Miranda, Luis A.

; Díaz-García, Diego A.

; Corona-Cruz, José F.

; Lozano-Ruiz, Francisco J.

; Sánchez-Reyes, Roberto

; Álvarez-Bojórquez, Mario E.

; Blake-Cerda, Mónika

; Rivera-Márquez, Raúl

; López-Saucedo, Raúl A.

; Pérez-Álvarez, Sandra I.

; Bolaño-Guerra, Laura M.

; Alatorre-Alexander, Jorge A.

; Alexander-Meza, Francisco

; Barrón-Barrón, Feliciano

; Blanco-Vázquez, Yazmín C.

; Campos-Gómez, Saúl

; Mata-Moya, Dolores de la

; Figueroa-Martínez, Pedro

; González-Cisneros, Paulina E.

; Íñiguez-García, Marco A.

; Lázaro-León, Jesús M.

; Loyola-García, Ulises

; Morales-Rivera, Marcelino

; Olivares-Torres, Carlos

; Ramos-Ramírez, Maritza

; Sáenz-Frías, Julia A.

; Silva-Bravo, Fernando

; Trejo-Rosales, Rogelio

; Souto-del Bosque, Miguel

; Arrieta, Óscar

Gaceta mexicana de oncología

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

Jun 2023, Volumen 22 Nº 2 Paginas 55 - 73

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

Resumen Antecedentes: El cáncer de células pequeñas (CPCP) representa el 13-15% del total de neoplasias primarias de pulmón. Se caracteriza por su rapidez en la tasa de crecimiento y en el desarrollo de metástasis a distancia. Objetivos: Orientar y estandarizar el tratamiento del CPCP enfermedad extensa en México basado en evidencia clínica nacional e internacional. Material y métodos: Este documento se desarrolló como una colaboración del Instituto Nacional de Cancerología y la Sociedad Mexicana de Oncología en cumplimiento con estándares internacionales. Se integró un grupo conformado por oncólogos médicos, cirujanos oncólogos, cirujanos de tórax, radio-oncólogos y metodólogos con experiencia en revisiones sistemáticas de la literatura y guías de práctica clínica. Resultados: Se consensaron, por el método Delphi y en reuniones a distancia, las recomendaciones en CPCP enfermedad extensa, producto de preguntas de trabajo. Se identificó y evaluó la evidencia científica que responde a cada una de dichas preguntas clínicas antes de incorporarla al cuerpo de la guía. Conclusión: Esta guía proporciona recomendaciones clínicas para el manejo de la enfermedad extensa del CPCP y durante el proceso de toma de decisiones de los clínicos involucrados con su manejo en nuestro país para mejorar la calidad de la atención clínica para estos pacientes.

Abstract Background: Small cell lung cancer (SCLC) represents 13-15% of all primary lung neoplasms and is characterized by its rapid growth rate and the rapid development of distant metastases. Objectives: To guide and standardize the treatment of extensive disease small cell lung cancer in Mexico based on national and international clinical evidence. Material and methods: This document was developed as a collaboration between the National Cancer Institute and the Mexican Society of Oncology in compliance with international standards. An interdisciplinary group was formed, including medical oncologists, oncological surgeons, thoracic surgeons, radiation oncologists, and methodologists with experience in systematic reviews of the literature and clinical practice guidelines. Results: A consensus was reached, both by the Delphi method and in remote meetings, of extensive disease recommendations resulting from work questions. The scientific evidence that answers each of these clinical questions was identified and critically evaluated, before being incorporated into the body of evidence of the Guide. Conclusions: This Clinical Practice Guide provides clinical recommendations for the management of extensive disease of SCLC to contribute to the decision-making process of the clinicians involved with its management in our country, hoping that this will contribute to improving the quality of clinical care in these patients.

https://doi.org/10.24875/j.gamo.22000122

Guía de práctica clínica para el manejo del cáncer de pulmón de células pequeñas: enfermedad limitada
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Cabrera-Miranda, Luis A.

; Lozano-Ruiz, Francisco J.

; Blake-Cerda, Mónika

; Corona-Cruz, José F.

; Sánchez-Reyes, Roberto

; Pérez-Álvarez, Sandra I.

; Díaz-García, Diego A.

; Álvarez-Bojórquez, Mario E.

; Rivera-Márquez, Raúl

; López-Saucedo, Raúl A.

; Bolaño-Guerra, Laura M.

; Maldonado-Magos, Federico

; Aldaco-Sarvide, Fernando

; Alvarado-Zermeño, Adriana

; Barajas-Figueroa, Luis J.

; Bautista-Aragón, Yolanda

; Bolaños-Morales, Francina V.

; Castillo-Ortega, Graciano

; Félix-Leyva, Jesús A.

; Gerson-Cwilich, Raquel

; Guzmán-de Alba, Enrique

; López-Galindo, Ángel A.

; Mariscal-Ramírez, Carlos

; Piñeiro-Retif, Rafael

; Ramos-Prudencio, Rubí

; Rodríguez-Cid, Jerónimo

; Silva-Bravo, Fernando

; Arrieta, Óscar

Gaceta mexicana de oncología

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

Mar 2023, Volumen 22 Nº 1 Paginas 3 - 23

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

Resumen Antecedentes: El cáncer de células pequeñas (CPCP) representa el 13-15% del total de neoplasias primarias de pulmón. Se caracteriza por su rapidez en la tasa de crecimiento y en el desarrollo de metástasis a distancia. Objetivos: Orientar y estandarizar el tratamiento del CPCP, enfermedad limitada, en México, basado en evidencia clínica nacional e internacional. Material y métodos: Este documento se desarrolló como una colaboración entre el Instituto Nacional de Cancerología y la Sociedad Mexicana de Oncología en cumplimiento con estándares internacionales. Se integró un grupo conformado por oncólogos médicos, cirujanos oncólogos, cirujanos de tórax, radio-oncólogos y metodólogos con experiencia en revisiones sistemáticas de la literatura y guías de práctica clínica. Resultados: Se consensuaron, por el método Delphi y en reuniones a distancia, las recomendaciones en CPCP enfermedad limitada, producto de las preguntas de trabajo. Se identificó y evaluó críticamente la evidencia científica que responde a cada una de dichas preguntas clínicas, antes de incorporarla a la guía. Conclusión: Esta guía proporciona recomendaciones clínicas para el manejo de la enfermedad limitada del CPCP y durante el proceso de toma de decisiones de los clínicos involucrados con su manejo en nuestro país para mejorar la calidad de la atención clínica en estos pacientes.

Abstract Background: Small cell lung cancer (SCLC) represents 13-15% of all primary lung neoplasms and is characterized by rapid growth rate and development of distant metastases. Objectives: To guide and standardize the treatment of limited disease small cell lung cancer in Mexico based on national and international clinical evidence. Material and methods: This document was developed as a collaboration between the National Cancer Institute and the Mexican Society of Oncology in compliance with international standards. An interdisciplinary group was formed, including medical oncologists, oncological surgeons, thoracic surgeons, radiation oncologists, and methodologists with experience in systematic reviews of the literature and clinical practice guidelines. Results: Consensus recommendations were reached, both by the Delphi method and in remote meetings, for limited SCLC disease resulting from the same number of work questions. The scientific evidence that answers each of these clinical questions was identified and critically evaluated, before being incorporated into the body of evidence of the guide. Conclusion: This guide provides clinical recommendations for the management of limited disease SCLC to contribute to the decision-making process of the clinicians involved with its management in our country, hoping that this will contribute to improving the quality of clinical care in these patients.

https://doi.org/10.24875/j.gamo.22000121

Antibacterial Profile in vitro and in vivo of New 1,4-Naphthoquinones Tethered to 1,2,3-1H-Triazoles Against the Planktonic Growth of Streptococcus mutans
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Gomes, Mônica P.

; Correia, Eduardo M.

; Gomes, Max W. L.

; Santos, Claudio C. C. dos

; Barros, Caroline S.

; Abreu, Fernanda V. de

; Antunes, Leonardo S.

; Ferreira, Vitor F.

; Gonçalves, Mariana C.

; Resende, Gabriel O. de

; Gonzaga, Daniel T. G.

; Pinto, Carla E. C.

; Paixão, Izabel C. N. P.

; Silva, Fernando C. da

Journal of the Brazilian Chemical Society

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

Sep 2022, Volumen 33 Nº 9 Paginas 1028 - 1040

Resumen: En | Texto: En | PDF: En

The cariogenic processes are mainly caused by the bacterium Streptococcus mutans (S. mutans) and consist of the demineralization of the tooth that occurs when the acid production overcomes the natural repair or if a problem occurs in the last one. In this work, we performed the synthesis of twenty-one 1,4-naphthoquinones tethered to 1,2,3-1H-triazoles (8a-8k and 9a-9j), antibacterial evaluation against the S. mutans in vitro and the acute toxicity of the better ones in vivo. We observed strong inhibition results in the disc diffusion test ranging, the halos of inhibitions, from 18.66 (± 0.57) to 29 (± 2.64) mm, and good values in the minimum inhibitory concentration (5 to 50 μg), for the compounds 9e, 9h, 9i and 9j: Furthermore, they do not have a cytotoxic effect at the concentrations tested. Besides that, in the in vivo test, they show some slight alteration in the histopathological analyses and the biochemistry. Thus, we found four potential candidates to become instruments for the treatment of cavities.

https://doi.org/10.21577/0103-5053.20220014

Sustainable Synthetic Strategies for the Preparation of Low Molecular Weight Drugs by Biotech Routes
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Ferreira, Patricia G.

; Carvalho, Alcione S. de

; Santos, Wilson C.

; Forezi, Luana S. M.

; Silva, Fernando C. da

; Ferreira, Vitor F.

Journal of the Brazilian Chemical Society

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

Jul 2022, Volumen 33 Nº 7 Paginas 664 - 680

Resumen: En | Texto: En | PDF: En

For billions of years, the phenomena of life and biocatalysis have been intertwined. If in the beginning biocatalysis was fundamental for the origin of life, currently it is very important for the cleaner production of pharmaceuticals and fine chemical intermediates. There is no doubt that drugs have brought great benefits to humanity, but currently, the expectations of modern society are focused on drugs with greater safety, less environmental impact, more sustainable practices, and less energy use. This review intends to show how the challenges for the production of some low molecular weight drugs produced by synthetic routes that involve at least one biotechnological step using microorganisms or enzymes were faced. These biotechnological drug production routes are more sustainable than conventional synthetic routes, as they produce a much smaller amount of waste, use moderate reaction conditions, have lower energy consumption, and have lower metal consumption, in addition to being more selective. Additionally, many natural products have structures too complex to be produced exclusively by chemical routes. The large-scale and economical production of these drugs is of great importance for fighting cancer as well as inflammatory, infectious, autoimmune, metabolic, hormonal, cardiovascular, and neurological diseases, among others.

https://doi.org/10.21577/0103-5053.20220044

Tandem Synthesis of Furanaphthoquinones via Enamines and Evaluation of Their Antiparasitic Effects against Trypanosoma cruzi
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Cardoso, Mariana F. C

; Forezi, Luana S. M

; Souza, Acácio S. de

; Faria, Ana F. M

; Galvão, Raissa M. S

; Bello, Murilo L

; Silva, Fernando C. da

; Faria, Robson X

; Ferreira, Vitor F

Journal of the Brazilian Chemical Society

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

Mar 2022, Volumen 33 Nº 3 Paginas 238 - 250

Resumen: En | Texto: En | PDF: En

Furanaphthoquinones are well known in medicinal chemistry for exhibiting relevant structural heterogeneity and bioactivities. In this work, it was synthesized a series of furanaphthoquinones through a tandem reaction between lawsone (8) and cyclic ketones in the presence of morpholine. This strategy provides an efficient and general method for synthesizing furanaphthoquinones with activity against the epimastigote form of Trypanosoma cruzi (T. cruzi), the parasite that causes Chagas disease. Compound 9b was the better prototype, and it exhibited high potency for causing parasite death, showed reduced acute toxicity towards mammalian cells, and was capable of rupturing the epimastigote plasma membrane and acting on sterol 14α-demethylase (CYP51). Additionally, 9b reduced trypomastigote viability by 99% after 24 h. Candidate 9b demonstrated the best and most promising profile when bound to CYP51.

https://doi.org/10.21577/0103-5053.20210142

Seleno- and Telluro-Functionalization of Quinones: Molecules with Relevant Biological Application
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Cordeiro, Pâmella S.

; Chipoline, Ingrid C.

; Ribeiro, Ruan C. B.

; Pinho, David R.

; Ferreira, Vitor F.

; Silva, Fernando C. da

; Forezi, Luana S. M.

; Nascimento, Vanessa

Journal of the Brazilian Chemical Society

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

Feb 2022, Volumen 33 Nº 2 Paginas 111 - 127

Resumen: En | Texto: En | PDF: En

Quinones and organochalcogens are classes of compounds with great biological applicability, such as antioxidant, anticancer, anti-Alzheimer, and antidepressant activities, among others. Thus, the combination of these two classes of compounds is important to obtain new hits with biological activities that are additive or synergistic. Several methodologies for the preparation of this class of hybrid compound have been widely described. Many of the prepared hybrid molecules have shown increased biological activities and, in some cases, to act as two distinct pharmacophores. In this review, methods for the preparation of selenium-quinones, tellurium-quinones and their biological applications are highlighted.

https://doi.org/10.21577/0103-5053.20210148

“Here (…) Practical Anthropology becomes pure art”: Kant on the distinction between Empirical Psychology and Pragmatic Anthropology
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Silva, Fernando M. F.

Filosofia Unisinos

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2022, Volumen 23 Nº 1 elocation e23109

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

RESUMO Entre os muitos palcos do problema kantiano de uma colocação recíproca dos conhecimentos humanos, o Enciclopedismo, sem surpresa, é um dos mais relevantes; e, no entanto, deveras surpreendentemente, é a Antropologia que aqui desempenha um dos papéis principais, na medida em que a complexa aferição da sua definição, da sua posição e da sua tarefa provam ser de irrefutável importância para a resolução do problema em pauta. A questão emerge sob a forma da associação - ou dissociação - entre Psicologia Empírica e Antropologia Pragmática, e a inclusão - ou exclusão - destas de uma relação com a Metafísica; um problema que, ao olhar incauto, parece ter sido fomentado pelo próprio Kant. Aqui, as opiniões divergem com respeito à natureza da relação entre as duas ciências, desde a sua total interdependência até à sua completa separação. Nós, por nossa parte, propomos uma abordagem diferente. O nosso objectivo é reconstituir o esquema fundamental dos conhecimentos humanos, como ele é por Kant apresentado não só na Lição sobre Enciclopedismo, mas em várias outras dimensões da actividade lectiva de Kant; e aqui, propor uma análise contrastiva entre Psicologia Empírica e Antropologia Pragmática; análise essa, porém, baseada não na assumpção da consonância ou dissonância destas mediante as suas características, mas sim baseada na posição e escopo destas no campo dos saberes humanos. Assim, é nossa intenção considerar as lições kantianas na sua interconexão, a saber, na sua aparentemente dúbia e simultânea colocação de uma Psicologia Empírica enquanto Antropologia; e, em vista da posição específica de ambas no esquema dos conhecimentos humanos, e do que esta posição comporta para o escopo e a tarefa de ambas, aferir até que ponto Psicologia Empírica é de facto Antropologia, e a partir de que ponto Psicologia Empírica não mais é Antropologia - não, pelo menos, Antropologia Pragmática. Por outras palavras, trabalharemos tendo em vista definir uma linha divisória no esquema dos conhecimentos humanos de Kant; linha essa que para Kant representará uma terceira dimensão do conhecimento e que se afirmará entre racional e empírico, a Metafísica e as ciências históricas, como um novo prisma cosmopolita.

ABSTRACT Among the many stages of Kant’s problem of a reciprocal collocation of the human knowledges, Encyclopedism, quite unsurprisingly, is one of the most relevant; and yet, quite surprisingly, it is Anthropology which plays here one of the lead parts, insofar as the complex ascertainment of its definition, its position, its task proves to be of irrefutable importance towards solving the greater problem at hand. The question arises as the association - or dissociation - between Empirical Psychology and Pragmatic Anthropology, and their inclusion in, or exclusion from, their greater or lesser relation with Metaphysics; a problem which, to the careless eye, seems to have been promoted by Kant himself. Here, opinions diverge as to the nature of the relation between the two sciences, from their total inter-dependence to their complete separation. We, in turn, propose a different approach. Our objective is to reenact Kant’s fundamental scheme of human knowledges, as presented not only in the only extant Lecture on Encyclopedism, but in various others dimensions of Kant’s academic activity; and here, to propose a contrasting analysis between Empirical Psychology and Pragmatic Anthropology; one, however, based not on the assumption of their consonance or dissonance through their characteristics, rather on their respective position and scope amid the field of human knowledges. As such, it is our intention to consider Kant’s Lectures in their interconnection, namely, in their apparently dubious simultaneous collocation of an Empirical Psychology as Anthropology; and, based on their specific position in the scheme of human knowledges, and what this position entails in terms of their scope and task, to ascertain to what extent Empirical Psychology is indeed Anthropology, and from what extent Empirical Psychology is no longer Anthropology - not, at least, Pragmatic Anthropology. In other words, we shall labor towards defining a dividing line in Kant’s scheme of human knowledges; one which for Kant represents a third dimension of knowledge and stands between rational and empirical, Metaphysics and the historical sciences; that line, in our view, being that of a cosmopolitical prism.

https://doi.org/10.4013/fsu.2022.231.09

10.

Glyphosate-resistant (GR) soybean and corn in Brazil: past, present, and future
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Adegas, Fernando S.

; Correia, Núbia M.

; da Silva, Alexandre F.

; Concenço, Germani

; Gazziero, Dionísio L. P.

; Dalazen, Giliardi

Advances in Weed Science

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2022, Volumen 40 Nº spe1 elocation e0202200102

Resumen: En | Texto: En | PDF: En

Abstract Glyphosate-Resistant Crops (GR crops) have caused considerable changes in weed management worldwide. In Brazil, GR cultivars of soybean and corn were officially introduced in the 2005/06 and 2011/12 crops, respectively. This technology has radically changed the weed management system, having an enormous impact on national agriculture. The objective of this review was to analyze the general aspects that led to the adoption of this technology in Brazil and present its future consequences and challenges. The adoption of GR soybean and corn was swift and comprehensive. Ten years after its introduction, GR soybean and corn are grown in most areas with these crops in Brazil. This success can be attributed to the reduction of costs, the broad spectrum of control provided by glyphosate, the solution for effective management resistance to ALS and ACCase inhibitors, the excellent managing of weeds that are difficult to control, the reduction of crop injury and carryover problems. However, the exclusive and consecutive use of glyphosate alone resulted in intense selection pressure for resistant weeds to this herbicide, which has become one of the most prominent challenges with these crops. Therefore, the future sustainability of GR soybean and corn will not be possible without the combination with other technologies, within integrated weed management.

https://doi.org/10.51694/advweedsci/2022;40:seventy-five004

11.

Movimento Química pós 2022: construção de um plano de ação para que a Química e Seus Atores impactem a Sustentabilidade e Soberania no Brasil
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Silva, Ingrid F.

; Nascimento, Pedro H.P.

; Lago, Rochel M.

; Ramos, Mozart N.

; Galembeck, Fernando

; Rocha Filho, Romeu C.

; Teixeira, Ana Paula C.

Química Nova

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2022, Volumen 45 Nº 4 Paginas 497 - 505

Resumen: Pt | Texto: Pt | PDF: Pt

Considering the bicentenary of Brazil’s Independence in 2022 and that this year was proclaimed by UNESCO as the International Year of Basic Sciences for Sustainable Development, in mid-2021 the Brazilian Chemical Society (SBQ) launched the “Post 2022 Chemistry Movement - Sustainability and Sovereignty”, with the main goal of promoting different activities so that chemistry contributes for the sustainable development and sovereignty of Brazil in the coming years. One of these activities is the proposal of an action plan, with goals to be achieved by 2030 and 2050. This article describes in detail how this action plan was formulated by a working group, with the help of an advisory council and interviews of 18 professionals from universities, the government, industries, the third sector and other organizations. Mimicking the Agenda 2030 SDGs, the resulting action plan is based on two broad Chemistry Sustainable Development Goals: promoting sustainability through chemistry in basic education, and promoting sustainability in the industry and university through science, technology, innovation, and education (STI&E) in chemistry. After the definition of three driving technological challenges in STI&E, they shall be successively implemented through different actions starting in 2023 yet.

https://doi.org/10.21577/0100-4042.20170898

12.

A first report of decapod crustaceans (Anomura and Brachyura) from Laje de Santos: a no-take marine reserve in the southeast coast of Brazil
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Moraes, Isabela R. R.

; Davanso, Thiago M.

; Silva, Alexandre R. da

; Cobo, Valter J.

; Alves, Douglas F. R.

; Santana, William

; Mantelatto, Fernando L.

; Castilho, Antonio L.

Revista mexicana de biodiversidad

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2022, Volumen 93 elocation e933658

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

Resumen Este estudio representa un esfuerzo sin precedentes para evaluar la diversidad de los decápodos Brachyura y Anomura del infralitoral rocoso del Parque Estatal Marino Laje de Santos, un área preservada y protegida localizada en la costa sureste de Brasil. Las muestras se tomaron trimestralmente durante 1 año con la combinación de sustrato de refugio artificial para captura pasiva y buceo autónomo para captura activa. Se determinaron un total de 987 individuos distribuidos en 32 especies, 22 géneros y 11 familias. Presentamos un reporte taxonómico de las especies y se discuten sus registros de distribución. El ermitaño Pagurus brevidactylus y el cangrejo Mithraculus forceps fueron las especies más abundantes de Anomura y Brachyura, respectivamente. Como se esperaba, la combinación de los métodos de muestreo mostró un valor más alto del índice de diversidad de Shannon (H = 5.7) que los métodos individuales de captura pasiva (H = 5.6) y captura activa (H = 4.4). Este estudio provee el primer reporte de crustáceos decápodos para el parque, por lo tanto, puede ser usado como línea base para programas de monitoreo de fauna local y en los planes de conservación.

Abstract This study represents an unprecedented effort to assess the diversity of rocky infralittoral decapods Brachyura and Anomura from the Marine State Park of Laje de Santos, a preserved and protected area located in the southeastern Brazilian coast. Sampling was carried out quarterly for 1 year, using the combination of artificial refuge substrate (ARS) for the passive capture of specimens, and SCUBA diving for active capture. A total of 987 individuals distributed into 32 species, 22 genera, and 11 families were determined. We present a taxonomic account of the species and their distribution records are discussed. The hermit crab Pagurus brevidactylus and the crab Mithraculus forceps were the most common species of Anomura and Brachyura, respectively. As expected, the combination of the sampling methodologies showed a higher Shannon diversity index value (H = 5.7), than the individual methods of ARS (H = 5.6) and active capture (H = 4.4). This study provides the first record of decapod crustaceans for the park, therefore it can be used as a baseline for local fauna monitoring programs and conservation planning.

https://doi.org/10.22201/ib.20078706e.2022.93.3658

13.

Different protocols for piglet creep feeding in the farrowing stage and residual effects in the nursery phase
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

ZIMMER, FERNANDO

; GALLI, GABRIELA M.

; MARCON, HIAM J.

; ALBA, DAVI F.

; GRISS, LUIZ

; MURAMATSU, KEYSUKE

; SILVA, ALEKSANDRO S. DA

; PAIANO, DIOVANI

Anais da Academia Brasileira de Ciências

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

2022, Volumen 94 Nº 4 elocation e20201500

Resumen: En | Texto: En | PDF: En

Abstract This study was aimed at the effects of different Creep-feeding protocols on piglet performance and its residual effects during the nursery phase. Experimental design used was five groups: WC (without creep); DCF (dry creep feeding); WCF (wet creep feeding); LD (additional liquid creep with automatic feed dispenser plus DCF); and LLF (additional liquid creep with linear feeder plus DCF). Ten litters per treatment were selected a total 50 sows and 645 piglets. During the first two weeks of lactation, the LD treatment (2.61 and 4.20 kg) promoted greater body weight (P <0.001) than the DCF (2.55 and 3.93 kg), (WFS) (2.43 and 3.69 kg) and LLF (2.50 and 4.00 kg) treatments, but did not differ from the WC treatment (2.68 and 4.09 kg). At weaning, the WC (5.22 kg), LD (5.32 kg) and LLF (5.27 kg) treatments gave higher body weights (P <0.001) when compared to the DCF (4.97 kg) and WCF (4.69 kg) treatments. We concluded that there was no change in the behavior of the piglets, and the use of dry feed with liquid supplements did not improve weight gain. The different creep feeding systems did not influence the weight and performance of the piglets in the nursery phase.

https://doi.org/10.1590/0001-3765202220201500

14.

Pathologic findings on ruminant enteric clostridial diseases reveal specificities and differences among iota and iota-like toxins
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Brito, Hélio S.

; Alencar, Fernando C.

; Alburquerque, Benedito

; Silva, Marcos G.

; Félix, Mellanie K.C.

; Mulholland, Daniel S.

; Oliveira, Eugênio E.

; Mariúba, Luis Andre M.

; Santos, Eliane M. S.

; Brandi, Igor V.

; Lobato, Francisco Carlos F.

; Cangussu, Alex S.R.

Revista de Ciencias Agrícolas

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

Dic 2021, Volumen 38 Nº 2 Paginas 157 - 174

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

RESUMEN La toxina iota (ITX) es una enterotoxina binaria producida como protoxina por Clostridium perfringens (C. perfringens) tipo E que es activada por enzimas proteolíticas en el intestino delgado de los animales infectados. Mediante la despolimerización de los filamentos de actina, la ITX provoca la desorganización del citoesqueleto de las células promoviendo el aumento de la permeabilidad celular. Aquí, realizamos esta revisión con el objetivo de avanzar en la comprensión de las enfermedades entéricas clostridiales causadas por las toxinas de C. perfringens y la especificidad de ITX en las lesiones de la mucosa intestinal. La ITX consta de un componente enzimático (Ia) y un componente de unión (Ib). Examinamos los hallazgos histológicos recientemente publicados sobre los efectos de la ITX y su relación con las enfermedades entéricas intestinales. Histológicamente, se ha observado necrosis hemorrágica y hemorragia multifocal en la mucosa del yeyuno-ileo, el intestino delgado y el abomaso. Aunque el diagnóstico sigue basándose en la presencia de toxinas en el contenido intestinal y en la historia clínica y/o histológica, es importante desarrollar nuevos indicadores enterotóxicos capaces de establecer métodos precisos para diferenciar las acciones de la ITX y de otras toxinas implicadas en el proceso infeccioso de C. perfringens tipo E.

ABSTRACT The iota toxin (ITX) is a binary enterotoxin produced as a protoxin by Clostridium perfringens (C. perfringens) type E that is activated by proteolytic enzymes in the small intestine of infected animals. By depolymerization of the actin filaments, ITX causes cytoskeleton disorganization of cells promoting the increase of the cell permeability. Here, we conducted this review aiming to advance the understanding of enteric clostridial diseases caused by C. perfringens toxins and the specificity of ITX in the intestinal mucosa lesions. ITX consists of an enzymatic component (Ia) and a binding component (Ib). We screened the recently published histological findings of the ITX effects and its relationship with intestinal enteric diseases. Histologically, hemorrhagic necrosis and multifocal hemorrhage have been observed in the jejunum-ileum mucosa, the small intestine, and the abomasum. Although the diagnosis is still based on the presence of toxins in the intestinal contents and the clinical and/or histological history, it is important to develop novel enterotoxemic indicators capable of establishing precise methods for differentiate the actions of ITX and other toxins involved in the infectious process of C. perfringens type E.

https://doi.org/10.22267/rcia.213802.154 41 descargas

15.

Development and Validation of a Method for Ionic Dyes Determination in Guava Fibrous Matrix Using Reverse Phase Chromatography
Facebook Twitter

Otras redes sociales
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Otras redes

Métrica
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Reis, Marina F. dos

; Silva, Fabiano A

; Madureira, Fernando

; Vargas, Eugênia

; Oliveira, Lucas M. F

; Lopes, Renata P

Journal of the Brazilian Chemical Society

Métricas del periódico
- Sobre o periódico
- SciELO Analytics

Nov 2021, Volumen 32 Nº 11 Paginas 2132 - 2139

Resumen: En | Texto: En | PDF: En

In this work, a method for food dyes determination in fibrous fruit pulps was developed. The analytes Tartrazine, Twilight Yellow FCF, Erythrosine, Orange G and Allura Red were analyzed by reverse phase chromatography with diode array (DAD) detection. The sample preparation consisted of a simple procedure, based on initial pH adjustment of the sample (pH = 10.0), followed by an extraction with acetonitrile (5.0 mL and agitation for 30 s), ultrasonic (5 min) and centrifugation (4000 rpm, 20 ºC, for 20 min). The supernatant had its pH adjusted to 3.0, followed by filtration. The method was validated, with the analytical curves prepared in a matrix, in the range of 50to150mg kg-1 for all the analytes studied (determination coefficients (R2) > 0.99). The method veracity was evaluated in terms of recovery, obtaining recoveries of 93-110%. The repeatability was less than 13.7%, while the intermediate precision was less than 19.0%. The limits of detection and quantification were determined, being 15 and 30 mg kg-1, respectively. The combined relative uncertainties were less than 13.8%. Therefore, it can be concluded that a simple method was developed, suitable for monitoring the presence of dyes in fruit pulps in routine analyzes.

https://doi.org/10.21577/0103-5053.20210105 15 descargas

Mostrar

itens por página

Página de 7 Próxima

Seleccione uno o más resultados

Todos Ordem alfabética

Resultados

Gráfico comparativo Descargar CSV

Visualizar estadísticas de

Enviar resultado

E-mail do(s) destinatário(s)*

Utilize ; (punto y coma) para más de un correo.

Enviar por correo-e

Esta página

Registros seleccionados

Todas las referencias (max. 300)

Su email

Asunto

Comentarios

Formato de exportación:

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

BibTeX

Citación

CSV (para Excel, etc)

Exportar:

Esta página

Itens seleccionados

Todas las referencias (max. 2000)

Sem resultados

No se encontraron documentos para su búsqueda

Glosario y ayuda para la búsqueda

Ud. puede enriquecer su búsqueda de una forma muy sencilla. Use los índices de búsqueda combinados con los conectores (AND u OR) para especificar su busca.

Por ejemplo, si desea buscar artículos acerca de
casos de dengue en el Brasil en 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

A continuación se muestra la lista completa de los índices de búsqueda que se pueden utilizar:

Cód. del Índice	Elemento
ti	título del articulo
au	autor
kw	palabras clave del artículo
subject	asunto (palabras del título, resumen y palabras clave)
ab	resumen
ta	título abreviado de la revista (ej. Cad. Saúde Pública)
journal_title	título completo de la revista (ej. Cadernos de Saúde Pública)
la	código de idioma de publicación (ej. pt - Portugués, es - Español)
type	tipo de documento
pid	identificador de la publicación
publication_year	año de publicación del artículo
sponsor	financiador
aff_country	código del país de la afiliación del autor
aff_institution	institución de filiación del autor
volume	volumen del artículo
issue	número del artículo
elocation	elocation
doi	número DOI
issn	ISSN de la revista
in	código de la colección SciELO (ej. scl - Brasil, col - Colômbia)
use_license	código de licencia de uso del artículo

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

Todo el contenido de este sitio www.scielo.br, excepto dónde está identificado, está bajo una Licencia de Atribución Creative Commons.
sepa más »