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1

Vargas Canales, Margarita Aurora. "La revuelta también vino de la caña: el caso de Puerto Rico." Latinoamérica. Revista de Estudios Latinoamericanos, no. 50 (June 28, 2011): 81. http://dx.doi.org/10.22201/cialc.24486914e.2010.50.25986.

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El texto se centra en explicar las vinculaciones políticas de los campesinos cañeros con el nacionalismo, en el marco de las huelgas cañeras de 1934. El artículo presenta un panorama histórico de la década de 1930 en el Caribe insular para introducir la situación de Puerto Rico en esos años. Las huelgas cañeras de 1934 fueron la única oportunidad histórica de la clase obrero campesina puertorriqueña de unirse al nacionalismo de Pedro Albizu Campos. Los movimientos del 34 fueron un factor importante que abrió la perspectiva de los trabajadores cañeros hacia otras opciones políticas, como el comunismo y el nacionalismo.
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2

Ramos-Zayas, Ana. "Symposium: Nationalist Ideologies, Neighborhood-Based Activism, and Educational Spaces in Puerto Rican Chicago." Harvard Educational Review 68, no. 2 (1998): 164–93. http://dx.doi.org/10.17763/haer.68.2.nx621g52t140k527.

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In this article, Ana Ramos-Zayas argues that schooling cannot be divorced from the political and socioeconomic forces governing neighborhood development. She focuses on the role of grassroots activists with a nationalist agenda (i.e., in favor of independence for Puerto Rico) in community-based educational projects in Chicago, particularly the Pedro Albizu Campos High School (PACHS), a compelling example of the potential of an educational project based on a nationalist ideology. For Puerto Ricans, the question of the political status of the Island—future U.S. state, commonwealth, or independent nation—has been debated for the past one hundred years. For the students and teachers of PACHS, independence, and an education based on the principles of Puerto Rican self-determination, is the only option. Ramos-Zayas argues that an oppositional education based on such a political ideology is a powerful, yet largely untapped, resource for creating successful ethnoracial youth and popular education programs. She contends that, in a community considered among the poorest of the poor, where Puerto Rican youth continue to drop out of high school, join gangs, and experience the most inhuman consequences of poverty, such a successful social initiative must be considered carefully. She points out the irony that this nationalist ideology—which encourages critical appraisal of U.S. policies toward Puerto Rico and of the ideology of the American Dream—actually encourages high school students to pursue mainstream mobility routes, such as abandoning gangs, finishing high school, and enrolling in college. The powerful, positive presence nationalist activism among Chicago Puerto Ricans is undeniable, as is the sense of hope and possibility that students and barrio residents experience at Pedro Albizu Campos High School and other community development projects in Chicago.
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3

Pantojas-García, Emilio. "Luis Angel Ferrao, Pedro Albizu Campos y et Nacionalismo Puertorriqueño (Río Piedras: Editorial Cultural, 1990), pp. 367, $15.00, pb." Journal of Latin American Studies 24, no. 2 (1992): 448–50. http://dx.doi.org/10.1017/s0022216x00023555.

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4

De Jesús, Anthony. "I have endeavored to seize the beautiful opportunity for learning offered here: Pedro Albizu Campos at Harvard a century ago." Latino Studies 9, no. 4 (2011): 473–85. http://dx.doi.org/10.1057/lst.2011.54.

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5

De Queiroz, Rubens Teixeira, Bartolomeu Israel De Souza, José João Lelis Leal Souza, Joseilsom Ramos De Medeiros, Christianne Farias Da Fonseca, and Eini Celly Morais Cardoso. "EXTENDING THE LIMITS OF CAMPOS RUPESTRES IN BRAZIL." Caminhos de Geografia 22, no. 82 (2021): 115–37. http://dx.doi.org/10.14393/rcg228255806.

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Campos rupestres are typical ecosystems of rock outcrops with high biodiversity and endemism, located in Brazilian territory, with vegetation analogous in Africa and Australia. The campos rupestres cover deeply dystrophic soils on highlands inserted in Amazon rainforest, Atlantic rainforest and Cerrado biomes. Despite recognition of campos rupestres as a global biodiversity hotspot, little is known its occurrence in dry forests. So, this work aimed to describe vegetable cover and soil properties in highlands associated to rock outcrops on Caatinga biome. A pristine area in Borborema plateau was chosen as study area. Frequency of species and life forms indicate high vegetable density and herbaceous habits predominance. Although the high similarity of species with Caatinga biome, presence of Albizia, Dalbergia, Poecilanthe e Platymiscium indicates a truly distinct floristic composition. Soils are shallower, less fertile and has lower water storage capacity than predominant soils in Caatinga. This work reveals the presence of campos rupestres beyond the areas previously considered favorable to its presence, extending its occurrence to regions of lower precipitation. The occurrence of the campos rupestres is attributed to an additional supply of water from fog in consonance with organic soils. Therefore, areas with similar characteristics should be prioritized to be preserved.
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Medina-Bolívar, José Samuel, Elberth Hernando Pinzón-Sandoval, and German Eduardo Cely. "Efecto de sustratos orgánicos en plantas de fresa (Fragaria sp.) cv ‘Albion’ bajo condiciones de campo." Ciencia y Agricultura 13, no. 2 (2016): 19–28. http://dx.doi.org/10.19053/01228420.v13.n2.2016.5548.

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El cultivo de fresa es una de las opciones productivas para los agricultores, principalmente de los departamentos de Cundinamarca, Antioquia y Boyacá. La tendencia creciente hacia una agricultura cada vez más abierta al comercio mundial determina que las actividades agrícolas nacionales deben ser cada día más productivas y competitivas, esto soportado en nuevas y mejores tecnologías de producción. Dentro de estas, se cuenta el uso de diferentes sustratos con el fin de solucionar problemas como acidez, alta erosión o problemas de tipo fitosanitario que impiden la siembra de forma directa en el suelo. Teniendo en cuenta lo anterior el objetivo de la investigación fue la evaluación de diferentes sustratos orgánicos en el crecimiento y desarrollo de plantas de fresa cv ‘Albion’, bajo condiciones de campo abierto. Para la evaluación se utilizó un diseño completamente al azar con tres tratamientos siendo S1: suelo 50% + fibra de coco 50% (S:FC), S2: suelo 50% + fibra de coco 25% + cascarilla de arroz 25% (S:FC:CA) y S3: suelo 50% + cascarilla de arroz 50% (S:CA), cada uno conto con tres replicaciones. Las variables evaluadas fueron masa fresca y seca de raíz y parte aérea, área foliar, clorofilas totales, numero de frutos/planta y producción g/planta. El tratamiento (S1), mostró diferencias significativas según la prueba de Tukey (P≤0.05) en la mayoría de parámetros evaluados, esto lo convierte en una alternativa para la producción de fresa cv ‘Albión’ bajo las condiciones de estudio.
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Wischer, Stephanie, and Webster Mohriak. "Halokinetic analysis of the Frade field area, Campos Basin, Brazil: Salt tectonics within an offshore strike-slip setting." Interpretation 8, no. 4 (2020): T869—T883. http://dx.doi.org/10.1190/int-2018-0201.1.

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The Frade field, located within the Campos Basin in the southeastern Brazilian margin, is a key oil field that produces from Oligo-Miocene turbidite reservoirs that derived their structural positioning due to the presence of an underlying salt diapir. The evolution of the Frade salt structure was examined using well data, selected 2D lines, and a 3D volume that were interpreted in detail focusing on the Aptian evaporite interval and its influence on the overburden. Analysis of the salt-sediment interaction indicated a complex deformation history that included five main stages of deformation, some assisted by tectonic reactivation episodes. (1) Post-Albian reactivation of a nearby north–northwest-south–southeast basement fault caused the Albian carbonate interval to fault, forming a west–northwest-east–southeast shear zone with a dextral strike-slip component. This movement initiated thin-skinned tectonics that offset the Albian carbonates and formed a pull-apart basin that accommodated a thick Late Cretaceous interval, which weakened the overburden and allowed for the initial formation of the Frade salt diapir. (2) Renewed diapir growth thickened and redistributed the Cenomanian-Maastrichtian sedimentary package proximal to the Frade salt anticline. (3) An initial and localized collapse of the Frade salt anticline occurred during early Paleogene extension. (4) Paleogene shortening caused the salt to flow, resulting in salt withdrawal in the southeast and diapir rejuvenation near its present-day apex, forming several inversion structures. In addition, the Paleogene shortening resulted in a low-relief anticlinal structure that rotated the turbidites into geometries favoring hydrocarbon accumulation. (5) A return to an extensional regime occurred during the late Oligocene/early Miocene. The results of this study provide a new insight into the development of strike-slip salt tectonic structures and show for the first time within the Campos Basin an Albian-level pull-apart basin that formed in association with salt tectonics.
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Afrianti, Nur Afni, and Tamaluddin Syam. "Evaluation of Primary Macro Nutrients on Arboretum Area in Lampung University Campus, Gedong Meneng." JOURNAL OF TROPICAL SOILS 19, no. 2 (2015): 91. http://dx.doi.org/10.5400/jts.2014.v19i2.91-97.

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Vegetation has a strong influence on soil characteristics. Vegetation can contribute organic matter sand nutrients to the soil. This study aimed to assess soil fertility through various approaches physical and chemical soil on various types of cover crop in the arboretum area at University of Lampung, and determined the type of cover crop that had the best effect on soil fertility. The research was be conducted by a survey method, which made observations on the soil characteristics of six species of cover crops following were rosewood (Dalbergia latifolia), teak (Tectona grandis), albizia (Paraserianthes Albiziaria), acacia (Acasia mangium), fern tree (Filicium desipiens), and mahogany (Swietenia macrophylla King). Soil characteristics observed data were the physical and chemical properties, obtained by field observations, through boring profiles and soil sampling. The results showed that soil fertility on rosewood, albizia, acacia and mahogany on campus area of Lampung University had contents of soil organic C, organic matter, and soil total N higher than teak and Fern tree. Litter from Rosewood, Albizia, and acacia had the best effect on soil fertility, so they could be the best covered vegetation to improve soil characteristics related to optimal and sustainable of land management.Keyword : Acacia, albizia, arboretum, cover crop, fern tree, litter, macronutrient, mahogany, rosewood, teak, and vegetation. [How to Cite: Nur AA and T Syam. 2014. Evaluation of Primary Macro Nutrients on Arboretum Area in Lampung University Campus, Gedong Meneng. J Trop Soils 19(2): 101-107. Doi: 10.5400/jts.2014.19.2.101]
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9

Queiroz, Luciano Rodrigues, Fábio Cunha Coelho, and Deborah Guerra Barroso. "Cultivo de milho no sistema de aléias com leguminosas perenes." Ciência e Agrotecnologia 31, no. 5 (2007): 1303–9. http://dx.doi.org/10.1590/s1413-70542007000500005.

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Objetivou-se avaliar a influência de algumas leguminosas perenes no teor foliar de N, P e K e na produtividade da cultura do milho (UENF 506-8), cultivado no sistema de aléias, sem adubação fosfatada. Foram realizados experimentos de campo por dois ciclos de cultivo, no Campo Experimental do CCTA/UENF, em Campos dos Goytacazes - RJ. Os tratamentos consistiram no sistema de aléias com Albizia lebbeck (L.) Benth., Peltophorum dubium (Spreng.) Taub., Leucaena leucocephala (Lam.) de Wit., Cajanus cajan (L.) Millsp., Sesbania virgata (Cav.) Pers., Mimosa caesalpiniaefolia Benth., Gliricidia sepium (Jacq.) Pers. e duas testemunhas com milho solteiro (com e sem NPK). Após oito meses de plantio das leguminosas, essas foram podadas, o material foi incorporado ao solo e em seguida semeado o milho nas entrelinhas, com espaçamento de 80 cm entre fileiras. Após 60 dias da semeadura do milho efetuou-se nova poda. No segundo ciclo de cultivo, as práticas culturais foram similares às do primeiro. Foi utilizado o delineamento em blocos casualizados com quatro repetições. Nas aléias de guandu, observou-se milho com maior teor foliar de N, em relação às demais leguminosas, no primeiro ciclo de cultivo. No segundo ciclo, os consórcios milho+guandu, milho+gliricídia e milho solteiro adubado superaram os demais na produtividade de grãos.
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10

Henrique da Guia, Gustavo, Joana Maria Ferreira Albretch, Thelma Shirlen Soares, and Miranda Titon. "AVALIAÇÃO QUALITATIVA DAS ESPÉCIES ARBÓREAS DO PARQUE ANTÔNIO PIRES DE CAMPOS EM CUIABÁ-MT." Revista da Sociedade Brasileira de Arborização Urbana 3, no. 3 (2019): 36. http://dx.doi.org/10.5380/revsbau.v3i3.66362.

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Este estudo teve por objetivo realizar a avaliação qualitativa da arborização do Parque Antônio Pires de Campos em Cuiabá-MT. Realizou-se o levantamento identificando as espécies em toda a extensão do Parque e analisando os parâmetros altura, qualidade da copa, caule e raiz, presença de pragas e danos físicos. Foram amostrados 1502 indivíduos, representando 50 espécies e 26 famílias. Verificou-se que o Parque é composto principalmente por espécies nativas (92%) sendo que as espécies em maior número de indivíduos são: gonçaleiro (Astronium fraxinifolium), farinheira (Albizia hasslerii) e o louro (Cordia glabrata). Em relação ao estado fitossanitário, 61,26% do total das árvores apresentaram-se como íntegras, ou seja, possuíam características típicas da espécie e em pleno vigor de desenvolvimento.
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11

Vincentelli, Maria Gabriela Castillo, Julia Favoreto, and Eduardo Roemers-Oliveira. "Paleogeographic evolution of carbonate reservoirs: geological and geophysical analysis at the Albian Campos Basin, Brazil." Journal of Geophysics and Engineering 15, no. 1 (2017): 26–41. http://dx.doi.org/10.1088/1742-2140/aa83ca.

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12

Carrasquilla, Antonio Abel, and Raphael Ribeiro Silva. "PETROPHYSICAL CHARACTERIZATION OF ALBIAN CARBONATE RESERVOIR IN CAMPOS BASIN USING A MULTIVARIATE APPROACH WITH WELL LOGS AND LABORATORY MEASUREMENTS." Revista Brasileira de Geofísica 36, no. 2 (2018): 123. http://dx.doi.org/10.22564/rbgf.v36i2.815.

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ABSTRACT. This study characterizes an Albian carbonate reservoir of Field B in the Campos Basin, based on geophysical well logs and laboratory petrophysical data. This permitted us to estimate the porosity, permeability and water saturation of this reservoir more reliably. In order to achieve this goal, the Cluster Analysis for Rock Typing module of the Interactive Petrophysics software was used to divide the well into electrofacies. For each of them, an equation was determined to find the porosity and the permeability, using the multiple linear regression technique, using as input the log data and as target the laboratory data. The obtained results were compared with different models proposed by other authors, with the best results being found with multiple linear regression. Water saturation, on the other hand, was estimated by Archie equation after identifying the cementation coefficient with the Pickett crossplot. Finally, the porosity and permeability data were again used to now identify three main flow units in the reservoir through the Winland graph. To verify the effectiveness of the adopted methodology, it was successfully applied in a blind test, defining poros-ity, permeability, water saturation and flow units in a well without laboratory data. Keywords: well logging, Field B, petrophysics, carbonate reservoir, Albian.RESUMO. Este estudo caracteriza um reservatório carbonático Albiano do Campo B na Bacia de Campos, a partir de dados de perfis de poço e de petrofísica de laboratório. Uma estimativa da porosidade, da permeabilidade e da saturação de água de forma mais confiável. Com ese objetivo, foi usado o módulo Cluster Analysis for Rock Typing do software Interactive Petrophysics para dividir o poço em eletrofácies. Para cada uma delas, foi determinada uma equação para a porosidade e a perme-abilidade, através da técnica de regressão linear múltipla, usando como entrada os dados de perfis de poço e como alvo os dados de laboratório. Esses resultados foram comparados com modelos propostos por outros autores, sendo os melhores aqueles obtidos com regressão linear múltipla. A saturação de água foi estimada com a Equação de Archie após identificar o coeficiente de cimenta-ção com o crossplot de Pickett. Finalmente, os dados de porosidade e permeabilidade foram usados para identificar três unidades de fluxo através do gráfico de Winland. Para verificar a eficácia da metodologia adotada, a mesma foi aplicada com sucesso num teste cego, definindo a porosidade, a permeabilidade, a saturação de água e as unidades de fluxo num poço sem dados de laboratório. Palavras-chave: perfis de poços, Campo B, petrofísica, reservatório carbonático, Albiano.
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Okubo, Juliana, Ricardo Lykawka, Lucas Veríssimo Warren, Julia Favoreto, and Dimas Dias-Brito. "Depositional, diagenetic and stratigraphic aspects of Macaé Group carbonates (Albian): example from an oilfield from Campos Basin." Brazilian Journal of Geology 45, no. 2 (2015): 243–58. http://dx.doi.org/10.1590/23174889201500020005.

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<p>Carbonate rocks from the Macaé Group (Albian) represent an example of carbonate sedimentation related to the drift phase in Campos Basin. This study presents depositional features, integrating them with diagenetic and stratigraphic aspects of the Macaé Group carbonates including the upper part of the Quissamã Formation and the lower part of the Outeiro Formation. Macroscopic analyses in cores and microscopic ones in thin sections allowed the recognition of eleven sedimentary facies - nine of them corresponding to the Quissamã Formation and two of them representing the Outeiro Formation. These facies were grouped into five facies associations. Oolitic grainstones and oncolitic grainstones are interpreted to be deposited in shallow depth probably in shoals above the fair weather wave base. The interbanks between shoals were formed in less agitated waters and characterized by deposition of peloidal bioclastic packstones and wackestones representative of sedimentation in calm waters. Bioclastic packstones and oolitic packstones/wackestones represent allochthonous deposits related to the beginning of the regional drowning that occur in upper Quissamã Formation. Pithonellids wackestones and bioclastic wackestones with glauconite are related to deep water deposits, characteristics of the Outeiro Formation. Post-depositional features revealed the action of diagenetic processes as, micritization, cimentation, dissolution, compaction, dolomitization and recrystallization occurred during the eo- and mesodiagenesis phases. Vertical facies analysis suggests shallowing upward cycles stacked in a sequence progressively deeper towards the top (from the Quissamã Formation to the Outeiro Formation).</p>
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Delgado, L., A. Batezelli, and J. Luna. "Petroleum geochemical characterization of Albian-Oligocene sequences in the Campos Basin: “Case study: Eastern Marlim oilfield, offshore, Brazil”." Journal of South American Earth Sciences 88 (December 2018): 715–35. http://dx.doi.org/10.1016/j.jsames.2018.10.009.

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15

Buganza, Jacob. "Metafísica, Antropología y Ética en Albino." EN-CLAVES del pensamiento 29 (January 1, 2021): 125–47. http://dx.doi.org/10.46530/ecdp.v0i29.421.

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En este trabajo se busca poner de relieve el vínculo, que se estima fuerte, entre la metafísica y la ética general de Albino. Luego de examinar los puntos fundamentales de la metafísica platónica contenida en el Didaskalikos, se busca ver la continuidad de ellos a través de la antropología filosófica, sobre todo, recurriendo al concepto de inteligencia, en el campo de la ética general, por lo que en la última parte del trabajo revisa la manera en que Albino expone su ética general, que resulta del entrecruce entre las éticas de Platón, Aristóteles y los estoicos.
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Danquah, E. "Impact of Eidolon helvum on roost trees on UENR campus." Journal of Energy and Natural Resource Management 2, no. 2 (2018): 44–50. http://dx.doi.org/10.26796/jenrm.v2i0.43.

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Four sample plots, each of size 20m by 20m were systematically distributed in two strata (i.e. two plots in bat-occupied zone andthe remaining two plots in bat-unoccupied zone, to serve as control units). Using six (20m × 20m) sample plots each, basal area,canopy, and heights of trees with DBH 1m were measured. Fourteen individual trees were recorded in the bat-unoccupied zone,resulting in only seven tree species. On the other hand, 16 tree species, corresponding to a total of 25 trees were recorded in thebat occupied zone. Albizia zygia, Antiaris toxicaria, Azadiractha indicia, Holarrhena floribunda, Morinda lucinda, and Sterculiatragacantha were common to both zones. The Shannon Wiener species diversity index was found to be higher (H1=1.92) in batoccupied zones and lower (H1=1.45) in bat-unoccupied zone. Estimates of tree basal area and tree height were much higherin bat occupied zones compared to bat-unoccupied zones. (Mann-Whitney U test: U = 573.0, p < 0.05), tree basal area (U= 674.0, p < 0.05), tree height (U = 632.0, p < 0.05) and tree canopy cover (U = 329.0, p < 0.05). Holarrhena floribunda(0.34 m2/h) and Ceiba pentandra (0.22m2/ha) contributed the largest basal area (32.94% of the total basal area) whilst Sennasiamea (0.01m2/ha) and Tectona grandis (0.01m2/ha) yielded the smallest basal area (1.17%). In general, bats seem to greatlypatronize areas with higher densities of tall trees than relatively open areas with shorter trees.
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Brito, Murilo de Oliveira, Meliza Arantes de Souza Bessa, Ralciane de Paula Menezes, et al. "Isolation of Cryptococcus species from the external environments of hospital and academic areas." Journal of Infection in Developing Countries 13, no. 06 (2019): 545–53. http://dx.doi.org/10.3855/jidc.10849.

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Introduction: Fungi of the genus Cryptococcus are cosmopolitan and may be agents of opportunistic mycoses in immunocompromised and sometimes immunocompetent individuals. Cryptococcus species are frequently isolated from trees and bird excreta in the environment and infection occurs by inhalation of propagules dispersed in the air. The aim was to investigate Cryptococcus species in bird excreta and tree hollows located in a university hospital area and in an academic area of a university campus.
 Methodology: A total of 40 samples of bird excreta and 41 samples of tree hollows were collected. The identification of the isolates was done by classical methodology and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry.
 Results: Twenty (62.5%) isolates of Cryptococcus were found in bird excreta and 12 (37.5%) in tree hollows. C. laurentii (currently Papiliotrema laurentii) was the most frequent species in both samples, being found in 5 samples of excreta and in 8 tree hollows. The diversity of species found in excreta (C. laurentii, C. albidus [currently Naganishia albida], C. liquefaciens [currently N. liquefaciens], C. friedmanii [currently N. friedmannii] and others) was higher than in tree hollows (C. laurentii, C. flavescens [currently Papiliotrema flavescens], and other yeasts).
 Conclusion: Many Cryptococcus species were isolated from excreta and tree hollows, and this fact is important for understanding the environmental epidemiology of those emerging pathogens for public health, as a way to implement surveillance actions and control of cryptococcosis.
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Pinzón Osorio, César Augusto, and Jonás Pinzón Osorio. "Primer registro de Scleroderma bovista (Boletales, Sclerodermataceae) para Colombia." Revista peruana de Biología 25, no. 4 (2018): 445. http://dx.doi.org/10.15381/rpb.v25i4.14550.

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Se describe e ilustra por primera vez a Scleroderma bovista para Colombia, un hongo gasteroide hallado en el campus de la Universidad Pedagógica Nacional (Bogotá), departamento de Cundinamarca. Se aporta información sobre su distribución, ecología y sustrato de crecimiento. Así, el género Scleroderma queda representado en el país por cuatro especies: S. albidum, S. areolatum, S. citrinum y S. bovista.
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Rahman, Md Touhidur, Shamia Farhana Shoma, Mohammed Mostafa Feeroz, and Md Kamrul Hasan. "Food and feeding behaviour of Chestnut-tailed Starling, Sturnia malabarica at Jahangirnagar University Campus, Bangladesh." Jahangirnagar University Journal of Biological Sciences 8, no. 1 (2019): 17–23. http://dx.doi.org/10.3329/jujbs.v8i1.42464.

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Food and feeding behaviour of Chestnut-tailed Starling, Sturnia malabarica were studied at Jahangirnagar University Campus, Bangladesh, from August 2016 to March 2017. A total of 414 observations were made on the feeding maneuver and it was noted that they were omnivorous consuming 67.15% animal diet compared to 20.53%plant diet.They predominantly consumedinsect larvae(39%) followed by beetles (16%), nectar (14%), food wastes (12%), fruits (7%), dragonflies (7%), damselflies (3%), and worms (2%).Among the five types of feeding modes recorded,hang-upmode (37.92%) was major feeding technique in Chestnuttailed Starling while pecking mode (6.76%)was least used. Rain tree (Samanea saman) (33.76%) followed by White siris (Albizia procera) (30.55%) was recorded as the most utilized foraging plant while mostly preferred perching height by Chestnut-tailed Starling was 6-9m (44.9%) followed by 3-6m (31.6%).
 Jahangirnagar University J. Biol. Sci. 8(1): 17-23, 2019 (June)
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Scatena, Vera Lucia, Vanessa de Aquino Cardoso, and Ana Maria Giulietti. "Morfo-anatomia de espécies de Blastocaulon Ruhland (Eriocaulaceae)." Acta Botanica Brasilica 13, no. 1 (1999): 29–41. http://dx.doi.org/10.1590/s0102-33061999000100004.

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Estudou-se a morfo-anatomia das raízes, caules, escapos e folhas de Blastocaulon albidum, B. prostratum e B. scirpeum, que ocorrem nos campos rupestres de Minas Gerais, Brasil. Verificou-se que as espécies apresentam raízes muito finas com epiderme unisseriada, duas-três camadas de células do parênquima cortical e tecidos vasculares com poucos elementos. Os caules em B. albidum e B. prostratum são aéreos, prostrados, ramificados, enquanto em B. scirpeum alguns indivíduos apresentam rizoma ou caules muito curtos. Constituem-se de epiderme, córtex e cilindro vascular. As folhas são delicadas, com células da epiderme com paredes finas, parênquima clorofiliano frouxo e reduzido número de feixes vasculares colaterais. Os escapos são cilíndricos, finos, não formam costelas e possuem apenas quatro feixes vasculares colaterais. As características observadas nessas espécies estudadas são típicas de plantas que ocorrem em locais úmidos e sombreados, ambientes onde é encontrada a maioria das espécies de Blastocaulon e ainda caracterizam anatomicamente o gênero, que se diferencia de Paepalanthus.
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Vincentelli, Maria Gabriela Castillo, Sergio Antonio Caceres Contreras, and Michelle Uchoa Chaves. "GEOPHYSICAL CHARACTERIZATION OF ALBIAN CARBONATES RESERVOIRS IN BRAZILIAN BASINS: THE SWEETNESS AS A TOOL FOR CARBONATE RESERVOIRS DEFINITION." Revista Brasileira de Geofísica 32, no. 4 (2014): 695. http://dx.doi.org/10.22564/rbgf.v32i4.538.

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ABSTRACT. The current research is based on volumetric seismic interpretation with the aim to visualize the main Albian carbonate reservoirs in shallow, deepand ultra-deep water of the continental Brazilian basins (Santos, Campos and Espírito Santo). It is expected that the method assists geoscientists in order to definecarbonate reservoirs with less geological uncertainty, when compared with the response obtained from the traditional seismic interpretation. The objective proposesa quickly, but confident, methodology to better define Albian carbonates using seismic attribute extraction. To achieve this goal, 25 seismic volumetric and surfaceattributes were analyzed; it was observed that it is possible to visualize the reservoir in most of them, mainly when the acoustic impedance (AI) is included on the analysis. For all the considered oil fields the sweetness attribute presented the best carbonate reservoir visualization and using sweetness any previous seismic interpretation isnecessary. In conclusion, the sweetness attribute allowed the interpretation of the Albian carbonates reservoirs in the Brazilian basins in a short period of time and withless geometrical uncertainty. Due to this fact, is possible to enforce that the method can be applied for seismic characterization of any geological feature that showschanges in its density in comparison with the surrounding stratigraphic layers.Keywords: volumetric interpretation, instantaneous frequency, instantaneous amplitude, envelope, limestone reservoirs.RESUMO. A presente pesquisa é baseada na interpretação sísmica volumétrica com o intuito de visualizar os principais reservatórios de hidrocarboneto do Albianoem águas rasas, profundas e ultraprofundas das bacias da margem continental brasileira (Santos, Campos e Espírito Santo). É esperado que o resultado auxiliegeocientistas na definição de reservatórios carbonáticos com menor incerteza geológica, quando comparado com a resposta obtida numa interpretação sísmica tradicional.O objetivo propõe um método rápido e confiável que melhor defina os reservatórios carbonáticos do Albiano por meio da extração de atributos sísmicos. Para alcançar esta meta, 25 atributos sísmicos volumétricos e de superfície foram analisados, na maioria deles é possível visualizar o reservatório, principalmente quando aimpedância acústica (AI) é incluída na análise. Para todos os campos de hidrocarboneto avaliados o atributo sweetness apresentou a melhor visualização do reservatório carbonático, sendo que para aplicar sweetness não é necessária uma interpretação sísmica prévia. Em conclusão, o sweetness permitiu a interpretação de reservatórios carbonáticos albianos nas bacias brasileiras em um curto período de tempo e com menor incerteza geométrica da distribuição do mesmo. Devido a isso, o método podeser aplicado para a caracterização sísmica de feições geológicas que apresentem mudanças em sua densidade em relação às camadas estratigráficas ao redor.Palavras-chave: interpretação volumétrica, frequência instantânea, amplitude instantânea, envelope, reservatórios carbonáticos.
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Queiroz, Luciano Rodrigues, Fábio Cunha Coelho, Deborah Guerra Barroso, and Valéria Aparecida Vieira Queiroz. "Avaliação da produtividade de fitomassa e acúmulo de N, P e K em leguminosas arbóreas no sistema de aléias, em Campos dos Goytacazes, RJ." Revista Árvore 31, no. 3 (2007): 383–90. http://dx.doi.org/10.1590/s0100-67622007000300003.

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O objetivo deste trabalho foi avaliar a produtividade de fitomassa da parte aérea e o acúmulo de N, P e K nas leguminosas arbóreas em sistemas agroflorestais de aléias, bem como verificar o efeito da adição de fósforo sobre as leguminosas. Foram realizados experimentos de campo com a utilização de leguminosas, com e sem adição de P, por dois anos consecutivos de avaliação, em Campos dos Goytacazes,RJ. Os tratamentos consistiram do sistema de aléias com Albizia lebbeck (L.) Benth., Peltophorum dubium (Spreng.) Taub., Leucaena leucocephala (Lam.) de Wit., Cajanus cajan (L.) Millsp., Sesbania virgata (Cav.) Pers., Mimosa caesalpiniaefolia Benth. e Gliricidia sepium (Jacq.) Pers. Após oito meses de plantio das leguminosas, estas foram podadas a 1,5 m de altura, restando a haste principal. O material podado foi pesado, descartando-se os ramos com diâmetro superior a 1,5 cm e sendo retiradas as amostras compostas para determinações da fitomassa seca e dos teores de N, P e K. Efetuou-se nova poda 80 dias após a primeira, e pesou-se esse material. No primeiro ano, o guandu mostrou-se superior na produtividade de fitomassa seca e no acúmulo de N, P e K. No segundo ano de avaliação, no experimento com adição de P a leucena e a canafístula assemelharam-se ao guandu na produtividade de fitomassa, enquanto a leucena e o guandu, no acúmulo de N e P, porém a leucena superou o guandu e a canafístula no acúmulo de K na parte aérea. A aplicação de P teve efeito positivo na produtividade de fitomassa seca de algumas espécies.
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Iboum Kissaaka, Joseph Bertrand, Joseph Marie Ntamak-Nida, François Mvondo, Paul Gustave Fowe Kwetche, Adrien Lamire Djomeni Nitcheu, and Guy Martin Abolo. "Postrift depositional evolution and sequence stratigraphy from offshore subsurface data of the Kribi-Campo subbasin (Cameroon, West African margin)." Interpretation 4, no. 1 (2016): T79—T101. http://dx.doi.org/10.1190/int-2015-0073.1.

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Using 2D seismic data and well logs from the Kribi-Campo subbasin in the south Cameroon margin, we have analyzed the postrift succession with the aim of deriving a chronostratigraphic chart and identifying stratigraphic traps. The Kribi-Campo subbasin related to the rifting between Africa and South America could be divided into a structurally complex eastern depocenter and a relatively less disturbed western depocenter in which a break-up unconformity approximately 107.5 Ma underlined the beginning of postrift history. We have used the modern concepts of sequence stratigraphy to identify and characterize seven second-order (SS1, SS2, SS3, SS4, SS5, SS6, and SS7) sequences and one third-order (SS8) sequences grouped into three megasequences (A, B, and C) from Albian to Recent. Sequence 1 (Albian-Cenomanian) was characterized by a retrogradation overlying a lowstand progradational pattern. The SS2 (Campanian-Maastrichtian) and SS3 (Maastrichtian) sequences were deposited during a highstand normal regression. From Paleocene to Eocene, the deposition of sequences SS4–SS5 was controlled by the development of submarine fan turbiditic system related to a forced regression of coastline. From the Middle Miocene to Recent age, the SS6, SS7, and SS8 sequences have been characterized by the development of sigmoidal-oblique clinoforms of a deltaic system well observed in the northern part of the study area. We have studied a new undocumented phase of forced regression of Mio-Pliocene in age within the postrift sequence SS7. The forced regression phases are associated with the Paleogene and Neogene uplift. Relative sea-level curves were constructed and compared with the existing published curves. The processes involved in the formation of these sequences were interpreted as a combination of tectonics, sediment supply, and sea-level changes. Potential reservoirs embedded within the sequences include channel fill, shingled turbidites, slope fan, and basin-floor fan complex.
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Drumond, Marcos Antônio, Orlando Monteiro de Carvalho Filho, and Visêldo Ribeiro de Oliveira. "Introdução e seleção de espécies arbóreas forrageiras exóticas na região semi-árida do Estado de Sergipe." Acta Botanica Brasilica 13, no. 3 (1999): 251–56. http://dx.doi.org/10.1590/s0102-33061999000300004.

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Este trabalho teve como objetivo selecionar espécies arbóreas de uso madeireiro e forrageiro para a região semi-árida do Estado de Sergipe. Foram introduzidas quinze espécies procedentes da região semi-árida da América Central: Acacia farnesiana, Albizia caribaea, Albizia guachepele, Ateleia herbert-smithii, Caesalpinia coriaria, Caesalpinia eryostachys, Caesalpinia velutina, Entervlobium cyclocarpum, Gliricidia sepium, Leucaena diversifolia, Leucaena leucocephala, Leucaena shannoni, Parkinsonia aculeata, Pithecellobium dulce e Senna otomaria. As espécies estudadas foram plantadas no Campo Experimental de Glória, da Embrapa Semi-Árido, no município de Nossa Senhora da Glória, SE. O plantio foi feito em covas de 30x30cm, sem adubação, espaçadas em 3x2m, seguindo o delineamento estatístico de blocos ao acaso com três repetições, com 36 plantas por parcela. Foram avaliadas a sobrevivência, a altura e o diâmetro à altura de l,30m do solo aos 55 meses de idade após o plantio definitivo no campo.. Os resultados mostram que as espécies G. sepium e A. guachepele sobressaíram-se em relação às demais, apresentando, respectivamente, alturas médias (± desvio-padrão) de 4,0±0,4 e 4,3±0,2m, diâmetros médios (± desviopadrão) de 4,4±0,5 e 6,3±0,1cm, com taxas de sobrevivência de 100 e 98%. L leucocephala, embora tenha atingido altos valores médios de altura (5,0±0,3m) e de diâmetro (6,0±l,5cm), apresentou baixa taxa de sobrevivência (44%). Ressalta-se, ainda, a mortalidade de 100% dos indivíduos de L diversifolia e A. farnesiana. As espécies Gliricidia sepium e Albizia guachepele destacaram-se silviculturalmente, com grande potencialidade para áreas semi-áridas do Estado de Sergipe. Acacia farnesiana, Leucaena diversifolia e Senna otomaria não se adequaram às condições semi-áridas da região.
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Brito, Ignacio Machado. "O Cretáceo Inferior do Nordeste do Brasil." Anuário do Instituto de Geociências 10 (February 15, 2017): 103–25. http://dx.doi.org/10.11137/1986_0_103-125.

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Le Crétacé inférieur, au Brésil, est bien connu dans les bassins sédimentaires du Nord-Est. II correspond à l'ensemble des dépôts détriques anté-Albien de la phase de taphrogénèse qui a précédé la séparation des plaques sud-américaine et africaine. Pour le moment la chronostratigraphie de ces dépôts est douteuse; aussi sont-ils subdivisés en étages locaux (Donjoaniano, Bahiano et Alagoano) conformément aux propositions de Brito et Campos (1982-1983). Actuellement des essais de correction avec l'échelle chronostratigraphique internationale sont en cours. Dans ce travail nous décrivons tous le étages du Crétacé inférieur de la colonne stratigraphique internationale et ceux de la colonne stratigraphique locale proposés pour les bassins de la côte atlantique du Brésil et de l'Afrique.
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Cocco, Kassia Luiza Teixeira, Denise Schmidt, Braulio Otomar Caron, Velci Queiroz de Souza, Daniele Cristina Fontana, and Gizelli Moiano de Paula. "Estimated phyllochron in low tunnel cultivated strawberry cultivars." Ciência Rural 46, no. 9 (2016): 1546–52. http://dx.doi.org/10.1590/0103-8478cr20150708.

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ABSTRACT: The aim of this study was to determine phyllochron in strawberry cultivars, from two origins during two crop years, conducted in low tunnel. Experiments were conducted at the Universidade Federal de Santa Maria, campus Frederico Westphalen (CESNORS/UFSM), Brazil, evaluating 'Camarosa', 'Camino Real' and 'Albion' strawberry cultivars. During the 2012 crop year, seedlings from Chile and Pelotas/RS, Brazil were evaluated, for the 2013 crop year, only seedlings from Chile were submitted to evaluations. In order to determine the phyllochron, twice a week the numbers of leaves (NL) of the main crown were counted and a regression between NL and accumulated thermal time (ATT) was held. The experimental design was a complete randomized block, with three repetitions with the evaluation of 12 plants per experimental unity, consisting of a factorial. For 2012 and 2013 crop years, it is possible to conclude that 'Camarosa' and 'Camino Real' cultivars required higher accumulation of degree-days (ºC day-1) to issue each successive leaf than cv. 'Albion', which, in turn, presented higher rates of leaf emergence, being considered earlier. Regarding to origin, seedlings from cv. 'Albion' from Chile presented lower total phyllochron values and for samples from Pelotas, no difference among cultivars was observed.
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Ogiesoba, Osareni C., Wayne Wright, Fred Wang, et al. "Seismic conditioning and attenuation of high-angle coherent noise in a mixed carbonate and siliciclastic setting, Campos Basin, offshore Brazil: A case study." GEOPHYSICS 76, no. 5 (2011): B199—B212. http://dx.doi.org/10.1190/geo2010-0103.1.

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We demonstrate the use of two industry-standard, noise-attenuating algorithms, [Formula: see text] and [Formula: see text] filtering, to attenuate coherent noise, improve event continuity, and obtain more reliable interpretation within the Pampo field, Campos Basin, offshore Brazil. We analyze 3D seismic data for noise type and associated maximum dip, and then determine optimal attenuating parameters required by the algorithms. In the crossline direction, coherent noise with dips as high as 16 to 18 ms/trace in the data masks real reflected signals. In the inline direction, the noise exhibited an approximately zero dip. The filtering process eliminated noise trains and improved event continuity, as well as obtained better well-to-seismic tie. The output wavenumber associated with noise trains is less than the Nyquist wavenumber; therefore, we conclude that the noise is not related to spatial aliasing, but to other undetermined sources. Though the noise occurs within the entire data volume, it is most severe in the vicinity of the carbonate platform. By eliminating linear noise that masquerades as geologic structures, we obtain better imaging of the Albian succession and the younger Cretaceous turbidite sequences, as well as the top of Aptian salt. The result is a better interpretation.
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Moura, Nelson antunes de. "Caracterização morfológica e ilustrativa de briófitas da região sul do Estado de Mato Grosso, Brasil." Arquivos do Museu Dinâmico Interdisciplinar 21, no. 2 (2017): 1–19. http://dx.doi.org/10.4025/arqmudi.v21i2.37966.

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O presente estudo faz parte do levantamento da brioflora dos municípios de Barão de Melgaço, Cuiabá e Chapada dos Guimarães, localizados na região sul do Estado de Mato Grosso, Brasil. Foram identificadas 20 espécies, sendo musgos (17 sp) e hepáticas (3 sp). Destas, 9 espécies foram selecionadas para descrição morfológica do gametófito e, quando presente, do esporófito das briófitas. Neste artigo, são apresentadas as espécies: Gemmabryum coronatum, Entodon sullivantii, Callicostella pallida, Isopterygium tenerum, Chryso-hypnum diminutivum, Octoblepharum albidum, Sematophylum demissum e Entodontopsis leucostega. Além da identificação e caracterização morfológica, são apresentadas pranchas ilustrativas realizadas através de câmara clara e técnica do pontilhismo à nanquim. Conclui-se que as briófitas encontradas na região sul de Mato Grosso são pouco estudadas do ponto de vista da caracterização da morfologia externa e interna, necessitando aprofundar neste campo, uma vez algumas destas, tais como Octoblepharum albidum, possui variedades diferenciadas que são importantes para conhecimento da distribuição geográfica da espécie.
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Rego, Flávio Luiz Hilário, Reginaldo Brito da Costa, Adriana Zanirato Contini, Renata Gomez dos Santos Moreno, Karen Gomes da Silva Rondelli, and Humberto Haruki Kumimoto. "Variabilidade genética e estimativas de herdabilidade para o caráter germinação em matrizes de Albizia lebbeck." Ciência Rural 35, no. 5 (2005): 1209–12. http://dx.doi.org/10.1590/s0103-84782005000500037.

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Em áreas rurais, buscam-se espécies arbóreas que apresentem rápido crescimento, habilidade para fixar nitrogênio e melhorar a estrutura do solo, especialmente em locais degradados, tendo usos múltiplos e facilidade para consórcio com culturas agrícolas. A Albizia lebbeck apresenta essas características. O presente estudo avaliou a variabilidade genética e estimou parâmetros genéticos em progênies de albizia para o caráter germinação. Sementes de 26 matrizes da espécie foram coletadas no município de Campo Grande, MS. Os testes de superação da dormência e germinação foram realizados no laboratório de Botânica da Universidade Católica Dom Bosco. O delineamento experimental foi o de blocos ao acaso, com cinco repetições e 15 plantas. As estimativas de herdabilidade no sentido amplo foram de 0,43 para indivíduos e 0,79 para média de matrizes, sugerindo expressivo controle genético. A seleção das 10 melhores matrizes proporcionou ganho genético de, pelo menos, 8,1%. Este germoplasma pode ser usado em programa de melhoramento genético para a espécie.
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Melani, Leandro Hartleben, Bruno César Zanardo Honório, Ulisses Miguel da Costa Correia, and Alexandre Campane Vidal. "The use of variational mode decomposition in assisting sedimentary cyclicity analysis: A case study from an Albian carbonate reservoir, Campos Basin, southeast Brazil." GEOPHYSICS 85, no. 3 (2020): B77—B86. http://dx.doi.org/10.1190/geo2019-0447.1.

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The sedimentary cyclicity analysis investigates the cyclic patterns and the different hierarchical orders of cyclicity in the stratigraphic record. The detection of cyclic depositional patterns is a key element of quantitative stratigraphy. It is often based on well-log data, which can be challenging due to the presence of superimposed cycles and nongeologic artifacts. We have developed an approach to assist the detection of sedimentary cyclicity in well-log signals based on a multiscale spectral analysis method. First, we apply variational mode decomposition to decompose the gamma-ray logs into band-limited subsignals, the intrinsic mode functions (IMFs), to investigate different orders of smoothness, signal-to-noise ratio, and the cyclicity embedded in the geologic record. Conventional time-domain analysis is carried out to understand the general trends in the IMFs, which enables us to better identify long-term cycles associated with transgressive-regressive (T-R) sequences. Then, by appropriately selecting a given IMF and extracting the instantaneous frequency (IF) and its mirrored version, we build a cyclicity log that can map expressive behavior change in the time-frequency domain. Because the IF is more sensitive to the signal variations, we could highlight the short-term cycles throughout the formation in detail. The detected short-term cycles are in agreement with the T-R sequence. We apply our method to the Albian carbonate succession of Macaé Group, Campos Basin, Brazil. We understand that our method can be a valuable tool for semiautomated detection of sedimentary cycles, assisting in the characterization of different hierarchical orders of cyclicity.
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Abad Abad, Carlos Fausto, Leticia Salomé Jiménez Álvarez, and Edwin Daniel Capa Mora. "Efecto de la cubierta (microtúnel) en la productividad de dos variedades de fresa (Fragaria vesca) en el sector Cajanuma cantón LojaEfecto de la cubierta (microtúnel) en la productividad de dos variedades de fresa (Fragaria vesca) en el sector Cajanuma ca." La Granja 31, no. 1 (2020): 131–41. http://dx.doi.org/10.17163/lgr.n31.2020.10.

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La fresa (Fragaria vesca) es un cultivo de gran aceptación a nivel mundial, no siendo la excepción en Ecuador. La mayor parte de la producción se realiza a campo abierto, haciendo que existan limitaciones por el ataque de factores bióticos y la influencia de factores abióticos, generando pérdidas en la producción. El presente trabajo se planteó en la provincia de Loja al no existir información precisa de este cultivo e investigaciones sobre el uso de sistemas protegidos (microtúnel). El objetivo principal fue evaluar el efecto de la producción de fresa en los dos sistemas de producción (Campo abierto y microtúnel), con variedades Albion y Monterey; además analizar el costo y rentabilidad de la producción. El sistema a campo abierto fue considerado como un tratamiento testigo para su evaluación frente al de microtunel. El experimento se realizó en la Estación Agropecuaria de la Universidad Técnica Particular de Loja, bajo condiciones de microtúnel y campo abierto, en la cuales se comparó el desarrollo fenológico y productivo de la fresa. Los resultados encontrados en el estudio en los dos sistemas a campo abierto y microtúnel no presentaron una diferencia estadística en las variables fisiológicas evaluadas, concluyendo que la cubierta con microtúnel al cultivo no influyó en el desarrollo en las dos variedades. En relación al análisis de costos-beneficio de la producción, este fue superior en el sistema microtúnel, la inversión fue más fuerte al inicio, sin embargo, se debe indicar que existen varias ventajas productivas en relación con campo abierto, generando beneficios al productor de fresa.
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Wapongnungsang, Etsoshan Y. Ovung, and SK Tripathi. "Assessment of tree diversity in tropical moist deciduous forest of Mizoram University, Northeast India." Journal of Applied and Natural Science 13, no. 1 (2021): 95–100. http://dx.doi.org/10.31018/jans.v13i1.2436.

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Forests are the main repository of biodiversity and play an important role in maintaining the ecological balance of nature. The status of species diversity reflects the health of the ecosystem. Therefore, the information on variation in the flora, for example, species composition, diversity and the basal area within any ecosystem like the forest of Mizoram University campus, Tanhril village, Aizawl would be important in understanding the forest wealth of the campus. Keeping in view, the study was analyzed the composition and diversity of Mizoram University campus by laying 16 (10 m ×10 m) quadrats at random locations during 2015-2016. A total of 35 tree species belonging to 30 genera and 22 families were recorded in the forest communities of University Campus. Aporusa octandra was the most dominant tree species with maximum 31.50 importance value index (IVI), 3.29 Shannon diversity index (H0) and 6972 Simpson’s index (D) followed by Castanopsis tribuloides (28 IVI, 0.22 H0 and 5256 D) and least dominant species recorded were: Albizia odoratissima, Anogeissus acuminate, Lithocarpus elegans, Oroxylum indicum. This study suggests that the forest patches are recovering after the establishment of the University because of adequate protection which was degraded in the past by the villager for collecting the trees for firewood, edible wild food and selecting the mature trees for felling. Therefore, further studies on regeneration potential of tree species would be crucial for the conservation of ecologically important species and to assess rates of their recovery following the disturbance.
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Samson, Arockianathan, Nagarajan Krishnakumar, Balasundaram Ramakrishnan, and Jabamalainathan Leona Princy. "Albino wild boar (Sus scrofa) in Tamil Nadu, Southern India." Therya notes 2, no. 2 (2021): 109–11. http://dx.doi.org/10.12933/therya_notes-21-45.

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El albinismo es un trastorno hipopigmentario con una falta total de melanina en el pelo, los ojos y la piel debido a la ausencia hereditaria de la enzima funcional tirosinasa en las células pigmentarias que afectan a toda la piel y el pelo, lo que da como resultado un pelaje blanco total con ojos rojos. El 10 de agosto de 2019 a las 11:30 am durante un trabajo de campo, registramos un jabalí macho albino en la Reserva de Tigres de Sathyamangalam, Eastern Ghats, Tamil Nadu, sur de la India. Desafortunadamente, numerosos registros de este tipo de aberraciones de color no se informaron adecuadamente. En esta nota destacamos la importancia de las fotografías como una herramienta importante para la documentación sobre la historia natural. Esta observación centra la atención de la comunidad científica por reconocer mejor este fenómeno y comprender las implicaciones ecológicas y fisiológicas de esta situación, que tiene una gran influencia en la supervivencia animal.
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Ferreira, Allan Martins, Aline Carla de Medeiros, Jussara Silva Dantas, et al. "Toxicity of the macerated of white and purple jurubeba flowers about bees Apismelliferas in sertao paraibano - Brazil." Journal of Agroindustry Systems 2, no. 1 (2019): 27–35. http://dx.doi.org/10.18378/2018.v2i1.21.

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There are secondary components of the nectar or the pollen in some vegetal species, to can be toxics or repellentsfor their pollinators. Thus, this work had for objective to study the effects from toxicity of differents concentrationsof macerated flowers of purpleJurubebaandwhite Jurubeba, as feeding of Africanized bees in a controlled environment.Therefore, wererealizedbioassays at the Laboratory of Entomology of the Federal University of Campina Grande, Campus ofPombal.It was used dried and crushed flowers of the Chamber and leaddy. The powder of the flowers was weighed in three different fractions (0,25%, 0,50% e 1,0%) and added to the candyandwater. The newly emerged workers were distributed togetherof 20 insects for wood boxmeasuring 11cm in length by 11cm in width and 7cm in height, in three replicates and control, making up 12 boxes and 240 worker bees, were packaged in B. O. D with temperature adjusted to 32º C andhumidity of 70 %. The control group received only candy and water. In view of the results obtained with the research, observed that the bees of the control remained alive until the 25 days reaching a statistical average of 20 days and for those treated with 0,25%, 0,50% e 1,0% respectively, presented mortality in the 20th, 18th e 13th day for bees fed with Solanum paniculatum L.For bees fed Solanum albidum Dun, observed that the bees of the control remain alive up to the 21 days reaching a statistical average of 18 days and for those treated with 0,25%, 0,50% and 1,0% respectively, presented mortality in the 17th, 13th e 12th day.The data analysis showed statistically significant differences between treatments and control, suggesting the toxic effect of the macerate obtained from Solanum paniculatum LandSolanum albidum Dunfor Africanized bees workersApismellifera. Thus, can be concluded with the accomplishment of this work that:The bees control remained alive until the 25thand 21th dayrespectively, by treatments with Solanum paniculatum L.andSolanum albidum Dun; The treated beeswith the concentrations 0,25%, 0,50% and 1,0% of macerated flowers Solanum paniculatum L, respectively, presented mortality to the 20th, 18thand 13thday; The treated bees with the concentrations 0,25%, 0,50% and 1,0% of macerated flowers Solanum albidum Dun, respectively, presented mortality to the 17th, 13thand 12th day; Flowers of Solanum paniculatum L. andSolanum albidum Dunpresented toxicity to Apismelíferaunder controlled ambient conditions
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Souza, Igor Manoel Belo de Albuquerque e., Sandra de Brito Barreto, Glenda Lira Santos, José Ferreira de Araújo Neto, and Ignez de Pinho Guimarães. "A mineralogia acessória do Amazonita Pegmatito Serra Branca: classificação de um pegmatito NYF na Província Borborema, Nordeste do Brasil." Geologia USP. Série Científica 20, no. 3 (2020): 47–61. http://dx.doi.org/10.11606/issn.2316-9095.v20-162199.

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O campo pegmatítico de Vieirópolis é caracterizado pela ocorrência de pegmatitos com amazonita e/ou berilo. Esse campo contém pegmatitos do tipo NYF (Nb-Y-F) inseridos no Domínio Rio Grande do Norte (DRGN), fora do contexto da Província Pegmatítica do Seridó (PPS). O principal pegmatito desse campo, o Amazonita Pegmatito Serra Branca, destaca-se pela mineralização de megacristais de amazonita e por sua exploração como rocha ornamental de elevado valor econômico. Para caracterizar a paragênese e a química mineral das fases acessórias do Amazonita Pegmatito Serra Branca, além de elucidar a classificação e a natureza petrogenética desse pegmatito, foram utilizados dados de campo, petrográficos, difração de raios X e química mineral. O Amazonita Pegmatito Serra Branca ocorre como dique tabular com aproximadamente 3 m de espessura, de direção NW-SE e caimento 45° WSW, caracterizado por apresentar uma zona composta por megacristais de amazonita e quartzo, e outra, por albita e quartzo sacaroidais. Apresenta vasta mineralogia acessória que compreende anglesita, biotita, bismutita, cerussita, columbita-(Mn), espessartina, helvina, fenaquita, fluorita, hematita, ilita, ilmenita, magnetita, montmorilonita, muscovita, piromorfita, pirocloro, rutilo e zircão. Destacando-se, também, atípicas mineralizações de sulfetos e a presença de beríliossilicatos reportados pioneiramente no contexto geológico da Província Borborema (PB). A paragênese mineral e a química dos minerais acessórios do Amazonita Pegmatito Serra Branca o classificam como pertence à família NYF da classe dos elementos raros, tipo da gadolinita, possivelmente associado a um magmatismo do tipo I.
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Anjos, Juarez José Tuchinski dos, and Etienne Baldez Louzada Barbosa. "Memória, História e Ressentimentos na Instrução Pública Primária na Província do Paraná (Brasil, 1853-1889)." Educação (UFSM) 43, no. 4 (2018): 791. http://dx.doi.org/10.5902/1984644433177.

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Dialogando com o campo de pesquisa historiográfica acerca do Ressentimento na História, este trabalho de história da educação encaminha o olhar para a instrução pública primária na Província do Paraná, na região sul do Brasil, na segunda metade do século XIX, mais especificamente, entre os anos de 1853-1889. O objetivo do artigo é a identificação de alguns dos ressentimentos que perpassavam as relações dos envolvidos com a instrução pública primária na província do Paraná – presidentes de província, professores, alunos, inspetores – e o lugar que este sentimento ocupava na vida e na ação educacional desses sujeitos. As fontes interrogadas são, principalmente, correspondências e ofícios trocados entre os partícipes do ensino paranaense e o registro memorialístico de Albino José da Silva sobre a escola primária em que estudou. Inicialmente, identifica-se a presença do ressentimento decorrente das ações e limitações dos adultos responsáveis pela organização e implementação da instrução pública na província paranaense. Em seguida, efetua-se operação semelhante, mas a partir das experiências pessoais do memorialista Albino Silva. Além de identificar o ressentimento que a dureza de sua infância lhe despertou, procura-se, ainda, observar as reações que ele produziu a tal sentimento já na vida adulta.
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Cavalcante, Uided Maaze Tiburcio, Leonor Costa Maia, Aline Maria Magalhães Melo, and Venézio Felipe dos Santos. "Influência da densidade de fungos micorrízicos arbusculares na produção de mudas de maracujazeiro-amarelo." Pesquisa Agropecuária Brasileira 37, no. 5 (2002): 643–49. http://dx.doi.org/10.1590/s0100-204x2002000500009.

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Foram investigadas espécies e densidade de fungos micorrízicos arbusculares (FMA) que possam beneficiar o crescimento de mudas de maracujazeiro-amarelo (Passiflora edulis Sims. f. flavicarpa Deg.). O delineamento utilizado foi o inteiramente casualizado, em arranjo fatorial de 5 x 3 + 1, com cinco FMA (Gigaspora albida, G. margarita, Acaulospora longula, Glomus etunicatum e Scutellospora heterogama), três níveis de inóculo (200, 300 e 400 esporos/planta) e um controle (sem inoculação), com três repetições, em solo fumigado contendo 3 mg dm-3 de P e pH 5,3. Não houve interação significativa entre a densidade de inóculo e as espécies de FMA em relação ao crescimento do hospedeiro. No entanto, a biomassa seca da parte aérea e a área foliar atingiram valores máximos no tratamento com 300 esporos/planta. Em geral, as mudas que receberam inóculos de G. albida, G. margarita e G. etunicatum apresentaram maior crescimento, colonização e densidade de esporos na rizosfera do que as associadas a A. longula e S. heterogama, que tiveram crescimento similar ao controle. A inoculação, no maracujazeiro, com três dos FMA testados proporcionou maior vigor à planta, reduzindo o tempo necessário para o transplantio ao campo.
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Nair, Vinayan P. "A note on the occurance of Common Albatross Appias albina (Boisduval) (Lepidoptera: Pieridae) at the St. Joseph’s College Campus, Kozhikode district, Kerala." Zoos' Print Journal 20, no. 5 (2005): 1874. http://dx.doi.org/10.11609/jott.zpj.1026.1874.

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Shoma, Shamia Farhana, and Sajeda Begum. "Comparative nesting patterns and success of Mynas and Starlings (Aves: Sturnidae) inhabiting Jahangirnagar University campus, Bangladesh." Bangladesh Journal of Zoology 48, no. 2 (2021): 321–34. http://dx.doi.org/10.3329/bjz.v48i2.52372.

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Nesting patterns of four species of mynas and starlings, Common Myna (Acridotheres tristis), Jungle Myna (Acridotheres fuscus), the Asian-pied Starling (Gracupica contra) and Chestnut-tailed Mtarling (Sturnia malabarica) were studied in Jahangirnagar University campus from March to September in 2016. Nests were searched systematically throughout the study area and nesting parameters like nest dimensions, nest-site selection, tree species preference, nesting materials, clutch size and nesting success were examined. A total of 101 nests were recorded where 31 nests were of Common Myna, 10 of Jungle Myna, 49 of the Asian-pied Starling and 11 nests were of Chestnut-tailed Starling. Overall, the sturnids preferred nesting on trees (n=84) to anthropogenic structures (n=17). Common myna showed maximum variation in nest-site selection using tree holes (n=12), tree branches (n=10) and building cornices, holes or crevices (n=9) whereas Chestnut-tailed Starling nested only in tree cavities (n=11). Jungle Myna built nests both in tree holes (n=4) and in building holes and crevices (n=6). The Asian-pied Starlings built their domed nests mostly on tree branches (n=47) where 69% nests were peripheral and 31% were central in position. Out of 20 species of trees utilized for nesting purpose, the majority of nests were built on Whites iris Albizia procera (n=18) followed by Neem Azadirachta indica (n=10) and Mahogany Swietenia mahagoni (n=10). The nests were constructed between 2 and 18m (8±3.8m) from the ground level. Among 19 types of nesting materials recorded, twigs, leaves, straws, grasses, feathers, plastics and polythene were frequently used by all four species while the Asian-pied starling used more rubbish materials than other species. Highest nesting success (80%) was recorded in Common Myna whereas the Asian-pied Starling, Chestnut-tailed Starling and Jungle Myna had 77.8%, 75% and 66.7% of nesting success respectively. Adaptions to using different nesting sites in Common Myna and comparatively higher nesting height in the Asian-pied Starling may have facilitated the greater nesting success.
 Bangladesh J. Zool. 48(2): 321-334, 2020
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Chaves, Mario Luiz De Sá Carneiro, Eder Luiz Tolentino Junior, Coralie Heinis Dias, and Antônio Wilson Romano. "Geologia, mineralogia, inclusões fluidas e gênese dos depósitos de titanita-epidoto de Capelinha, Minas Gerais." Geologia USP. Série Científica 17, no. 4 (2018): 3. http://dx.doi.org/10.11606/issn.2316-9095.v17-124587.

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Nas proximidades da cidade de Capelinha, Minas Gerais, ocorrem depósitos de titanita-epidoto associados a veios pegmatoides ricos em albita e/ou adulária, nos arredores de duas localidades principais conhecidas como Campo do Boa e Fanadinho. Tais depósitos estão hospedados em um xisto metavulcânico básico, rico em titânio, composto principalmente por albita, epidoto, actinolita, titanita e quartzo, relacionado à Formação Capelinha (Grupo Macaúbas), de idade toniana; o protólito dessa rocha foi determinado como um álcali-basalto, que foi metamorfisado em fácies anfibolito. Os veios apresentam espessura que varia entre alguns decímetros até cerca de 4 m, e são constituídos principalmente por albita, parcial a inteiramente caulinizada na área do Fanadinho, onde também são mais ricos em epidoto. Quartzo é raro, enquanto as micas são ausentes. Análises por difração de raios X, fluorescência de raios X e microssonda eletrônica, além de estudos de inclusões fluidas, permitiram caracterizar a titanita e minerais associados nesses depósitos. A titanita e, mais raramente, o epidoto podem formar drusas excepcionais, muito apreciadas por colecionadores de minerais, cujos monocristais em geral maclados podem alcançar alguns centímetros ao longo do eixo “c”. Outros minerais importantes nesses veios, embora incomuns, são apatita, ilmenita e actinolita. Estudos de inclusões fluidas indicaram uma temperatura mínima de cristalização na faixa de 300 a 450ºC. Em termos genéticos, tal mineralização relacionase, primeiramente, à extrusão dos basaltos ricos em titânio, os quais foram metamorfisados no Ciclo Brasiliano (± 570 Ma), com provável formação e enriquecimento de titanita. As temperaturas mínimas de aprisionamento das inclusões fluidas encontradas são plenamente compatíveis com as condições de fácies anfibolito. Esses dados indicam que os fluidos hidrotermais percolaram as rochas encaixantes ainda no processo de metamorfismo, provavelmente ao final desse processo.
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Kirchof, Edgar Roberto Roberto, and Iara Tatiana Bonin. "Literatura infantil e pedagogia: tendências e enfoques na produção acadêmica contemporânea." Pro-Posições 27, no. 2 (2016): 21–46. http://dx.doi.org/10.1590/1980-6248-2015-0125.

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Resumo O objetivo deste artigo é apresentar uma revisão do campo de estudos que articula literatura infantil e pedagogia, com base na análise de 69 artigos publicados em três revistas que focalizam a literatura infantil no Brasil: Leitura: Teoria & Prática; Tigre Albino; Revista Emília. As análises buscam evidenciar as principais questões levantadas, nesses periódicos, no que tange às dimensões pedagógicas da literatura infantil. Antes dos resultados das análises, contudo, o artigo apresenta uma breve retrospectiva histórica das principais questões envolvendo literatura infantil e pedagogia. Os resultados das análises permitiram concluir que a maior parte dos artigos enfatiza a importância da literatura para a formação do sujeito, trazendo propostas e sugestões para que sejam salvaguardadas as dimensões lúdica e artístico-literária da literatura infantil na escola e em outros espaços de formação.
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Lins, Cláudia Elizabete de Lima, Regina Lúcia Félix de Aguiar, Uided Maaze T. Cavalcante, and Leonor Costa Maia. "Influência da adubação com esterco bovino e inoculação de fungos micorrízicos arbusculares no crescimento de mudas de Carica papaya L. (var. Formosa)." Acta Botanica Brasilica 13, no. 3 (1999): 257–61. http://dx.doi.org/10.1590/s0102-33061999000300005.

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Devido ao rápido crescimento do mamoeiro, poucos são os solos que, em condições naturais, podem satisfazer a sua demanda por nutrientes, sendo necessária a aplicação de fertilizantes minerais que favoreçam as plantas no período do transplantio para o campo. Os fungos micorrízicos arbusculares (FMA) são conhecidos por tornarem os seus hospedeiros mais resistentes aos estresses bióticos e abióticos, sendo por isso empregados na produção de mudas de diversas árvores frutíferas. Nesse trabalho objetivou-se avaliar a influência da inoculação de FMA e da aplicação de matéria orgânica no crescimento de mudas de mamoeiro (Carica papaya L. var. Formosa), em casa-de-vegetação. Mudas foram cultivadas em solo arenoso (caracterizado pelo baixo teor de P: 4 ppm), inoculado com FMA e adubado ou não com 50g de esterco bovino. O delineamento experimental foi inteiramente casualizado com seis tratamentos e três repetições: - inoculação com FMA nativos, com Gigaspora albida Schenck & Smith, ou com Scutellospora hetervgama (Nicol. & Gerd.) Walker & Sanders, com ou sem matéria orgânica O experimento foi avaliado a cada 10 dias, sendo aferidos os parâmetros: altura, diâmetro do caule e número de folhas. Diferenças significativas entre os tratamentos adubados e não adubados foram observados a partir do 30º dia Após 40 dias, as plantas inoculadas com os FMA nativos apresentaram melhor desenvolvimento do que as inoculadas isoladamente com G. albida ou S. hetervgama, em todos os parâmetros avaliados, tanto em solo adubado como em solo não adubado.
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Kuroda, Michelle Chaves, Alexandre Campane Vidal, and João Paulo Papa. "Analysis of porosity, stratigraphy, and structural delineation of a Brazilian carbonate field by machine learning techniques: A case study." Interpretation 4, no. 3 (2016): T347—T358. http://dx.doi.org/10.1190/int-2016-0024.1.

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The upscaling of well logs has many challenges, especially for carbonate rocks. Primary among them is the suitable choice of seismic attributes to be integrated with well information, whose random combination can produce artifacts of rock properties. To solve this problem, we have developed an alternative hybrid method to estimate well-log data from seismic attributes, associating the seismic attributes choices with the genetic algorithm and artificial neural network multilayer perceptron ability to predict neutron porosity. Thirty-seven seismic attributes were extracted along 12 wellbores from an Albian offshore carbonate reservoir of the Campos Basin. From these attributes, three were selected: 3D mix, structure-oriented median-filtered amplitude, and acoustic impedance. From this set of seismic data, we used the first two attributes to estimate neutron porosity in the reservoir seismic area. As a result, we obtained a 3D map of well-log information at the seismic scale. In the 3D map, it is possible to identify the main structural and architectural elements of the field. These results corroborate the interpretation of bioconstruction, lagoons, and carbonate shoals, and the delimitation of a tidal channel at the top of a reservior, using neutron porosity.
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Pazmiño Miranda, Nelly del Pilar. "Métodos alternativos de fungicidas para control de Botrytis cinerea en fresa (Fragaria vesca)." INNOVA Research Journal 3, no. 2.1 (2018): 61–67. http://dx.doi.org/10.33890/innova.v3.n2.1.2018.667.

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El estudio evalúa los métodos alternativos para controlar Botrytis cinerea encultivos de fresa (Fragaria vesca) con el aprovechamiento de los extractos vegetales decanela (Cinnamomum zeylanicum) y cola de caballo (Equisetum arvense L.). La investigaciónse realizó en un cultivo establecido de fresa de 8 meses de edad, variedad Albión, aplicandolos extractos obtenidos por el método de destilación por arrastre de vapor. Las dosisevaluadas fueron 250ml/lt, 500ml/lt, 750ml/lt y 1000ml/lt respectivamente, midiendo elefecto inhibitorio de B. cinerea en el campo a los 40 días de la primera aplicación. Lasvariables analizadas fueron severidad, incidencia y peso del fruto, encontrando un mejorefecto fungicida con extracto de canela con una dosis de 1000ml/lt, siendo una nuevaalternativa para el control fúngico aprovechando el uso de los metabolitos secundarios de lasplantas y teniendo un efecto menos nocivo en la contaminación ambiental que no afecta lasalud del agricultor
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CERQUERA, Edwin Alexander, Jeimy MUÑOZ, Joaquín ARAYA, and Olivero GÓMEZ. "REGISTRO DE ACTIVIDAD ELÉCTRICA EN LA RETINA DE UNA RATA ALBINA EMPLEANDO UNA MATRIZ DE MICROELECTRODOS." Acta Biológica Colombiana 20, no. 3 (2015): 37–46. http://dx.doi.org/10.15446/abc.v20n3.46216.

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<p>Las matrices de microelectrodos son dispositivos que permiten la detección de potenciales de acción o espigas en poblaciones de células excitables, ofreciendo varias aplicaciones en el campo de las neurociencias y la biología. Este trabajo muestra un protocolo para el registro de espigas en una población de células ganglionares retinales empleando una matriz de microelectrodos. La retina de una rata albina fue extraída y preparada para ser estimulada <em>in vitro </em>con luz led blanca, con el fin de registrar sus espigas evocadas ante estos estímulos. Cada microelectrodo puede registrar espigas de más de una célula ganglionar, razón por la cual se determinó a qué célula pertenece cada espiga aplicando un procedimiento conocido como “clasificación de espigas”. El trabajo permitió obtener el registro de un periodo de estimulación y otro de no estimulación, con el fin de representar los potenciales de acción evocados con luz y los espontáneos. Los registros fueron almacenados para visualizar las espigas de las células ganglionares y poder aplicar la herramienta de clasificación de espigas. De este modo, se almacenan los instantes de tiempo en los cuales cada célula ganglionar registrada generó potenciales de acción. Este trabajo conllevó al establecimiento de un protocolo de experimentación básico enfocado al uso de matrices MEA en el laboratorio de adquisición de potenciales extracelulares de la Universidad Antonio Nariño Sede Bogotá, no sólo para caracterizar los potenciales de acción de células ganglionares retinales, sino también para otro tipo de células que puedan ser estudiadas empleando matrices de microelectrodos.</p><p align="center"><strong>Recording of Electrical Activity in the Retina of an Albino Rat Employing a Microelectrode Array</strong></p><p>The microelectrode arrays (MEA) are devices that allow the detection of action potentials or spikes in populations of excitable cells, offering a wide spectrum of applications in topics of Neurosciences and Biology. This work describes a protocol for recording of spikes in a population of retinal ganglion cells employing a microelectrode array. The retina of an albino rat was dissected and prepared to be stimulated<em> in vitro </em>with white led light and to record their evoked spikes. Each microelectrode can record spikes from more than a ganglion cell, for which it was necessary to determine which cell fires each spike applying a procedure known as spike sorting. The work allowed to obtain the recording of a stimulation period and another of non-stimulation, representing evoked and spontaneous action potentials. The recordings were saved, in order to visualize the action potentials of the ganglion cells detected and to apply a computational method for the spike sorting. In this way, it was saved the time stamps in which each action potential was fired by its respective cell. This work established a basic experimentation protocol focused to the use of MEA devices in the laboratory for acquisition of extracellular potentials at the Antonio Nariño University – Bogota Headquarters, not only for characterization of action potentials fired by retinal ganglion cells populations, but also for other kind of cells that can be studied employing MEA devices.</p><p> </p>
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Mubeen, Sahar, Mahrukh Kamran, Hina Mubeen, Rabia Rehan, and Iffat Raza. "The correlation between percent liver weight (PLW) and percent fat cells (PFC) of liver in HFD-STZ induced diabetic rats in comparison with insulin, metformin and combination treated diabetic rats." Professional Medical Journal 26, no. 08 (2019): 1208–12. http://dx.doi.org/10.29309/tpmj/2019.26.08.227.

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Background: The study was designed to evaluate short term effects of commonly used antidiabetic drugs on liver. The objective of the study is to observe and analyze the correlation between percent liver weight and percent liver fat cells in control rats and diabetic, insulin, metformin and insulin-metformin combination treated high fat diet (HFD) / Streptozotocin (STZ) induced diabetic albino rats. Study Design: Experimental comparative study. Setting: Institute of Bio Medical Sciences (IBMS), Dow University of Health Sciences (DUHS), Ojha Campus, Karachi. Period: December 2014 to May 2015. Materials and Methods: The experimental study was conducted on 50 albino wistar rats. 10 rats served as control rats while rest of the rats were experimentally induced for diabetes type 2 and were then randomized into 5 groups. One group was treated with insulin, one with metformin, and the one group with insulin-metformin combination for 4 weeks. All the treated groups were compared with untreated and control group. At the end of experiment, all the rats were sacrificed and livers were isolated and weighed. Percent liver weight calculated. Liver cut sections were processed and stained to analyze the correlation in percent fat cells in liver percent liver weight and in each treated and untreated diabetic groups, then the results were compared with control rats. Results: Data is analyzed by using SPSS Version 22. Pearson correlation was used to identify correlation between the percent liver weight and percent fat cells in liver of control, treated and untreated diabetic groups. Significant and positive correlation (p-value < 0.01) in insulin treated group of diabetic rats was observed indicating that insulin has a role in causing fatty liver. Conclusion: Insulin treated diabetic group shows a significant positive correlation between percent fat cells of liver and percent liver weight.
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Gutiérrez-Hinestroza, Marllelis, Sadi Iturralde, Edison Brito, Gilda Rubira-Gómez, and Yolanda Limones-Borbor. "Mineralogía y distribución de arcillas en las formaciones productoras Naricual y Oficina de la Cuenca Oriental de Venezuela." Revista Científica y Tecnológica UPSE 5, no. 2 (2018): 65–73. http://dx.doi.org/10.26423/rctu.v5i2.421.

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Las formaciones Naricual (Oligoceno Tardío-Mioceno Temprano) y Oficina (Mioceno) pertenecientes a la Cuenca Oriental de Venezuela, son de importancia económica por la cantidad de arenas productoras de hidrocarburos que contienen. Sin embargo, ha tenido lugar una disminución acelerada de la producción en los campos de esta cuenca, ocasionada por varios factores, entre ellos los asociados con la migración de finos en los intervalos productores y a los daños de formación generados por la presencia de diferentes minerales de arcilla. El propósito de este trabajo es determinar la composición y distribución de las fases mineralógicas presentes en las arenas productoras de ambas formaciones, con el fin de establecer el potencial del daño que pueden generar los minerales de arcilla presentes en el flujo de fluidos durante la producción de petróleo. La caracterización mineralógica fue llevada a cabo mediante análisis petrográfico, Difracción de Rayos X (XRD), ensayos de disolución en ácidos y Microscopia Electrónica de Barrido (SEM). La mineralogía de las muestras está gobernada por cuarzo, albita, calcita, dolomita, pirita y muscovita. La arcilla predominante es caolinita, aunque también se detecta en algunas muestras clorita, illita/esmectita y glauconita; el porcentaje de arcillas oscila entre 6 y 12 %, situándose el promedio en 6,8% para las areniscas de Naricual, y 7,2% para Oficina. Los resultados obtenidos constituyen un insumo fundamental al momento de orientar planes de acción orientados al aumento de la producción.
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Murillo Ilbay, Angel Rubén. "Evaluación fenotípica de dos generaciones de plantas de arveja (Pisum sativum L.) provenientes de semillas irradiadas con rayos gamma para identificar resistencia a Ascochyta spp." ACI Avances en Ciencias e Ingenierías 12, no. 3 (2021): 14. http://dx.doi.org/10.18272/aci.v12i3.1918.

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RESUMEN
 El cultivo de arveja (Pisum sativum L.) es afectado en forma severa por Ascoquitosis, enfermedad que produce grandes pérdidas en rendimiento. No existen genotipos que presenten resistencia genética; para generarlos e identificar plantas resistentes, se indujeron mutaciones con rayos gamma en semillas de la variedad INIAP 436 Liliana, cuyo objetivo fue: evaluar fenotípicamente dos generaciones de plantas de arveja provenientes de semillas irradiadas. La investigación constó de tres etapas: primero, se determinó que la dosis óptima de radiación para inducir mutaciones fue de 120 Gy. En la segunda etapa se irradiaron a esa dosis 30000 semillas, se sembraron en campo junto a una población testigo constituyendo la generación M1. En la población tratada se observaron: disminución del porcentaje de emergencia, aparecimiento de plantas quiméricas y estériles. Las semillas cosechadas originaron la generación M2 (tercera etapa), que se sembró en campo en dos localidades junto a una población testigo, No existieron diferencias significativas entre los porcentajes de emergencia de las poblaciones en las dos localidades; se observaron plantas mutantes clorofílicas de las categorías albina, xantha y viridis. La frecuencia de mutaciones clorofílicas inducidas fue de 0,22%. Los valores de la efectividad y eficiencia mutagénica, fueron de 0,0018 y 0,0169, respectivamente. Se inocularon las plantas en etapa de floración con aislamientos de Ascochyta sp. y se evaluó su reacción. Fueron seleccionadas dos plantas con resistencia intermedia. Su progenie fueron sembrados bajo invernadero y a los 35 días se inoculó con Ascochyta spp; la reacción fue de susceptibilidad. En este estudio, el empleo de rayos gamma no fue efectivo para obtener resistencia a Ascoquitosis, debido posiblemente a que es un carácter poligénico, o la dosis de radiación fue baja con una probabilidad de un cambio simultáneo de esos genes es bastante baja.
 Palabras clave: mutaciones, rayos gamma, mutantes clorofílicas, progenie, mejoramiento genético.
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49

Mendoza-Villarreal, Rosalinda, Valentín Robledo-Torres, Miguel Ángel Pérez-Rodríguez, Reyna Roxana Guillén-Enríquez, Víctor Martínez-Cueto, and José Rafael Paredes-Jácome. "Impacto de cubierta, ecotipo y endomicorriza en morfología y calidad de chile piquín." Revista Mexicana de Ciencias Agrícolas 12, no. 2 (2021): 193–204. http://dx.doi.org/10.29312/remexca.v12i2.2847.

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Abstract:
La investigación se realizó con ecotipos de chile piquín de Coahuila, Nuevo León y Zacatecas. Se evaluaron plantas de chile piquín del segundo año de producción. Se utilizaron dos ambientes: a) macro túneles de malla blanca, roja azul, negra tipo raschel con 30% de sombreo; y b) campo abierto con 100% de transmisión de luz. Se inocularon 50 esporas de un conglomerado de hongos micorrízicos arbusculares (Glomus mosseae, Rhizophagus intraradices, Sclerocystis coremioides y Gigaspora albida), directamente al sistema radical. Se utilizó un arreglo factorial 5 x 6 x 2 (cubiertas, ecotipos y micorrizas) y su distribución fue un diseño bloques al azar con cuatro repeticiones. Se evaluó el rendimiento y algunos caracteres morfológicos como altura de planta (AP), diámetro de tallo (DT), longitud de raíz (LR), peso fresco de planta (PFP), peso fresco de planta (PSP), peso fresco de raíz (PFR), peso seco de raíz (PSR), rendimiento por planta (RPP). Los resultados indicaron que la malla blanca favoreció los caracteres morfológicos de la planta con 320% en AP, 322.7% en DT, 235.8% la LR, 8 veces el PFP, 8.5 veces el PSP, 327.2% el PFR, 5 veces el PSR, 6.8 veces el RPP, en comparación a las plantas desarrolladas en campo abierto. Además, la calidad de chile piquín proporciona condiciones para el desarrollo de endomicorrizas (esporas y porcentaje de colonización). La malla azul con la menor radiación fotosintéticamente activa (RFA) influyó positivamente en las variables agronómicas, de calidad y la inoculación (número de esporas y porcentaje de colonización). El ecotipo que influyó en los SST, VitC, fenoles y NE fue el de SNL y el RTZ en variables agronómicas y % colonización. La inoculación con el consorcio de micorrizas mejoró los caracteres agronómicos y calidad del fruto de chile piquín.
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50

Cerón, María, and Jorge Bravo. "Autenticación del meteorito arenoso AR-51 con técnicas físicas para su caracterización." Revista de Investigación de Física 24, no. 2 (2021): 5–10. http://dx.doi.org/10.15381/rif.v24i2.20320.

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Abstract:
Se evidencia la autenticación de la muestra meteoritica Ar-51, como un meteorito arenoso, proveniente de la región de Arequipa, Perú. Las técnicas empleadas para su estudio fueron uorescencia de rayos X (FRX), difracción de rayos X (DRx) y espectroscopia Mössbauer de transmisión (EMT), que registró datos a temperatura de ambiente, (TA). Los resultados de las fases estructurales consisten principalmente de albita, piroxeno, clinopiroxeno, augita, maghemita y magnetita; y EMT, revela que su composición mineralógica contiene tres sextetos magnéticos, de los cuales, 2 de ellos se asignan a los sitios de la magnetita, el primer sexteto correspondiente al campo magnético mayor es asignado al sitio de Fe3+, sitio A (posición tetraedral); el segundo se adjudica al sitio B, donde se alojan los cationes Fe3+ y Fe2+ por igual (posición octaedral) y el tercer sexteto magnético se adjudica a la maghemita; la mezcla de posiciones (capas octaédricas y octaédricas/tetraédricas) a lo largo de la dirección [111] genera superposición de planos, los cuales se consideran más estables y tres dobletes paramagnéticos, de los cuales dos de ellos están asociados con cationes estructurales de Fe2+, que podrían ser adjudicados a los subgrupos del silicato piroxeno y el tercer doblete está asociado al sitio del catión de Fe3+
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