599
10
20655
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http://socictopen.socict.org/files/original/ae2f1ac51161f945dad003babde0df9f.pdf
780a3b8b652afd51ee0458d5c7e3704a
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Desigualdades regionais no acesso aos financiamentos do Pronaf no estado do Rio de Janeiro
Creator
An entity primarily responsible for making the resource
Marlon Gomes Ney, Paulo Marcelo de Souza, Luciane da Costa Barbé, Niraldo José Ponciano
Description
An account of the resource
O objetivo da pesquisa foi analisar o comportamento da distribuição dos recursos do Pronaf-crédito entre os municípios do estado do Rio de Janeiro no período entre 1998 e 2012 e verificar se esta distribuição reflete a participação dos diversos municípios na agricultura familiar do estado. Para caracterizar essa distribuição, foram calculados os índices de Gini e Theil, o percentual do crédito obtido nos 25 e 50% menores municípios, o percentual obtido nos 25% maiores municípios e o índice de concentração. Os resultados evidenciaram, a princípio, melhoria da distribuição regional desses recursos. Porém, como a distribuição da agricultura familiar entre os municípios é desigual, a distribuição regional dos recursos entre eles não reflete, necessariamente, a importância relativa que têm na agricultura familiar do estado. Constatou-se que alguns municípios, principalmente aqueles com maior peso na agricultura familiar estadual, vêm recebendo uma proporção de crédito relativamente menor do que a proporção da agricultura familiar que representam.
Date
A point or period of time associated with an event in the lifecycle of the resource
2016
Source
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Estudos Sociedade e Agricultura
Publisher
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Universidade Federal Rural do Rio de Janeiro
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Agriculture (General), Agricultural industries, Land use
Relation
A related resource
<a href="https://revistaesa.com/ojs/index.php/esa/article/view/451" target="_blank" rel="noreferrer noopener">https://revistaesa.com/ojs/index.php/esa/article/view/451</a>
-
http://socictopen.socict.org/files/original/8f6cb048502181f2df627216b40128af.pdf
14aaf3a2ae7fcedf2bfa0b035ae22ff7
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
DESLIZAMIENTOS ASOCIADOS A LA DEGRADACIÓN DEL PERMAFROST: EVIDENCIAS GEOMORFOLÓGICAS EN EL PASADO Y PRESENTE EN LOS ANDES CENTRALES (31º-34ºS)
Creator
An entity primarily responsible for making the resource
Stella M Moreiras, Pilar Jeanneret, Carolina Lauro, Ivan Vergara Dal Pont, Mariana Correas González, Sebastián Junquera Torrado
Description
An account of the resource
Este trabajo presenta evidencias de la incidencia del ascenso de la temperatura en la degradación o fusión del permafrost y su asociación con descargas de flujos de detritos en la región andina (30º-32ºS). Este resultado permite enfatizar la relación entre los colapsos de laderas y la temperatura permitiendo vincular la inestabilidad de las laderas en los Andes Centrales a condiciones ambientales en el pasado. Numerosos deslizamientos han sido vinculados a periodos interglaciares con escasos registros paleoclimáticos locales. Estos resultados además ponen en evidencia la necesidad de abordar este tipo de estudios a fin de reducir la vulnerabilidad de las comunidades andinas y atender medidas preventivas que disminuyan el evidente riesgo asociado en el contexto del calentamiento global.
Date
A point or period of time associated with an event in the lifecycle of the resource
2019
Subject
The topic of the resource
permafrost. calentamiento global. inestabilidad. peligrosidad natural
Identifier
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10.12957/geouerj.2019.45036
Source
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Geo UERJ
Publisher
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Universidade do Estado do Rio de Janeiro
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Geography (General)
Relation
A related resource
<a href="https://www.e-publicacoes.uerj.br/index.php/geouerj/article/view/45036" target="_blank" rel="noreferrer noopener">https://www.e-publicacoes.uerj.br/index.php/geouerj/article/view/45036</a>
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http://socictopen.socict.org/files/original/624fae0fe4ccb0786b196970e96c4bf9.pdf
53fdec283b3c84dcbf90a334adfe559d
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Desnutrición infantil, una mirada desde diversos factores
Creator
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Luzvelia G. Alvarez Ortega
Description
An account of the resource
El objetivo del estudio fue determinar los factores relacionados a la prevalencia de la desnutrición de niños menores de 3 años de la provincia de Huánuco. Fue un estudio observacional, prospectivo, transversal, analítico y correlacional; con una muestra aleatoria de 234 niños, a quienes se les aplicó fichas de valoración y a sus madres un cuestionario de factores; previamente validados y fiabilizados, según consideraciones éticas. Se realizó un análisis descriptivo e inferencial mediante la prueba Chi cuadrada de Pearson, y la prueba multinomial, para un p ≤ 0,05, apoyados en el SPSS V22. Se encontró relación significativa entre diferentes factores: desconocimiento de la madre del número de raciones que debe consumir el niño a partir del sexto mes, la inaccesibilidad económica para el abastecimiento de alimentos, la rotación de cultivos agrícolas tradicionales por comerciales ineficaces, el bajo peso al nacer (p
Date
A point or period of time associated with an event in the lifecycle of the resource
2019
Subject
The topic of the resource
Factores relacionados, Prevalencia, Salud infantil, desnutrición infantil
Identifier
An unambiguous reference to the resource within a given context
10.33554/riv.13.1.168
Source
A related resource from which the described resource is derived
Investigación Valdizana
Publisher
An entity responsible for making the resource available
Universidad Nacional Hermilio Valdizán de Huánuco
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Science (General)
Relation
A related resource
<a href="http://revistas.unheval.edu.pe/index.php/riv/article/view/168" target="_blank" rel="noreferrer noopener">http://revistas.unheval.edu.pe/index.php/riv/article/view/168</a>
-
http://socictopen.socict.org/files/original/84b5f52d8f3311ae6aef9611f176f8ad.pdf
7f8178380a9c4cada04d1bf1a6714104
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Destino del nitrógeno aplicado en un cultivo de sésamo (Sesamum indicum L.) en un suelo degradado de Paraguay: Fate of nitrogen applied to a sesame crop (Sesamum indicum L.) in a degraded soil of Paraguay
Creator
An entity primarily responsible for making the resource
Alba Liz González, Héctor Javier Causarano Medina
Description
An account of the resource
En Paraguay el cultivo de sésamo (Sesamum indicum L.) es cada vez menos productivo debido a la degradación de la fertilidad de los suelos. La fertilización nitrogenada eleva los rendimientos en suelos pobres en este nutriente, pero su eficiencia aún no es bien conocida. En el estudio se utilizó la técnica isotópica para determinar el destino del N aplicado a un cultivo de sésamo. En el campo experimental de la Facultad de Ciencias Agrarias de la Universidad Nacional de Asunción, Paraguay, en un diseño experimental de bloques completos al azar se estudió la eficiencia en la aplicación de N como fertilizante y abono verde (lupino + avena negra) con y sin laboreo del suelo. El N fue aplicado como urea-15N (5% enriquecimiento) a razón de 50 kg/ha. Los resultados mostraron contenidos (kg/ha) de N en granos (84), materia seca (104) y suelo hasta 15 cm (938). El 20% del N aplicado fue absorbido por la planta, 42% permaneció en el suelo y 38% no pudo contabilizarse y posiblemente se perdió por lixiviación y volatilización. La técnica de dilución isotópica fue útil para determinar el destino del N aplicado, pero sobreestimó el aporte de los abonos verdes en el contenido de N en el suelo.
Date
A point or period of time associated with an event in the lifecycle of the resource
2014
Subject
The topic of the resource
15N, Sesamum indicum, técnicas isotópicas
Identifier
An unambiguous reference to the resource within a given context
10.15446/acag.v63n3.42259
Source
A related resource from which the described resource is derived
Acta Agronómica
Publisher
An entity responsible for making the resource available
Universidad Nacional de Colombia
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Agriculture
Relation
A related resource
<a href="http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122014000300008&lng=en&tlng=en" target="_blank" rel="noreferrer noopener">http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122014000300008&lng=en&tlng=en</a>
-
http://socictopen.socict.org/files/original/ea07a78fa48ee606652aeab60392475b.pdf
3a4012a348039dab47160cb82588c01a
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Destrucción cultural y discriminación social: una denuncia contra la modernidad en la lírica de José Emilio Pacheco
Creator
An entity primarily responsible for making the resource
Blanca Álvarez Caballero
Description
An account of the resource
Este texto presenta cuatro tópicoslíricos de carácter social preocupantes en laobra de José Emilio Pacheco, en las últimastres décadas del siglo XX occidentalizado: 1) ladestrucción del mundo por las guerras, 2) ladestrucción ecológica por la industrialización,3) la destrucción histórica nacional por laglobalización y 4) la diaria discriminaciónsocial y reificación del hombrecontemporáneo. Se trata de una denuncia contrasfondo ético que permita al hombre tomarconciencia de los daños y prevenir otros parapugnar por un entorno humanístico.
Date
A point or period of time associated with an event in the lifecycle of the resource
2006
Subject
The topic of the resource
Globalización, Guerra, Reificación, denuncia, ecología
Source
A related resource from which the described resource is derived
Ciencia Ergo Sum
Publisher
An entity responsible for making the resource available
Universidad Autonoma del Estado de Mexico
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Social Sciences, Science
Relation
A related resource
<a href="http://www.redalyc.org/articulo.oa?id=10413206" target="_blank" rel="noreferrer noopener">http://www.redalyc.org/articulo.oa?id=10413206</a>
-
http://socictopen.socict.org/files/original/46985c8089f1125d9664edcb42f85350.pdf
37e8e37fd7c126ba10376ab3950e3806
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Detecção e monitoramento da resistência do tripes Frankliniella occidentalis ao inseticida espinosade
Creator
An entity primarily responsible for making the resource
Marcos Zatti da Silva, Mário Eidi Sato, Débora Soller Rais
Description
An account of the resource
O tripes Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) é uma das pragas mais importantes em cultivos protegidos, principalmente de plantas ornamentais e hortícolas. Entre os problemas enfrentados pelos agricultores estão a dificuldade de seu controle com o uso de inseticidas devido à sua preferência pelas partes internas das flores e a evolução de resistência aos agroquímicos. O objetivo da pesquisa foi caracterizar a resistência de F. occidentalis a espinosade e avaliar a frequência de insetos resistentes ao inseticida, em áreas comerciais de crisântemo de diversos municípios do Estado de São Paulo. Seleções para resistência a espinosade foram realizadas em laboratório, utilizando-se uma população de F. occidentalis, coletada em 2007 de um cultivo comercial de crisântemo em Campinas (SP). No decorrer de sete seleções para resistência, a CL50 de espinosade passou de 8,41 mg i.a. L-1 para 1111 mg i.a. L-1. Comparando-se a linhagem resistente (R) (selecionada) e a suscetível (S), a razão de resistência (CL50 R/CL50 S) atingiu valores de ≈280 vezes. Estabeleceu-se uma concentração discriminatória de 98 mg i.a. L-1 para o monitoramento da resistência de F. occidentalis a espinosade. O monitoramento foi realizado coletando-se 19 populações do tripes em áreas comerciais de crisântemo no Estado de São Paulo. Os bioensaios foram realizados com ninfas de segundo ínstar de F. occidentalis, colocadas em arenas de folha de feijão. As aplicações de espinosade, na sua concentração discriminatória, foram realizadas sobre as ninfas em torre de Potter. Os resultados indicaram alta variabilidade entre as populações com relação à suscetibilidade a espinosade. Foram observadas populações com até 40,7% de insetos resistentes. Este é o primeiro relato de resistência de F. occidentalis a espinosade no Brasil.
Date
A point or period of time associated with an event in the lifecycle of the resource
2013
Subject
The topic of the resource
Thripidae, crisântemo, monitoramento de resistência
Source
A related resource from which the described resource is derived
Bragantia
Publisher
An entity responsible for making the resource available
Instituto Agronômico de Campinas
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Agriculture (General)
Relation
A related resource
<a href="http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100006&lng=en&tlng=en" target="_blank" rel="noreferrer noopener">http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100006&lng=en&tlng=en</a>
-
http://socictopen.socict.org/files/original/821fd4365d0cf4be263f9a8cbc63f23a.pdf
37e8e37fd7c126ba10376ab3950e3806
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Detecção e monitoramento da resistência do tripes Frankliniella occidentalis ao inseticida espinosade Detection and monitoring of resistance to the insecticide spinosad in the thrips Frankliniella occidentalis
Creator
An entity primarily responsible for making the resource
Débora Soller Rais, Mário Eidi Sato, Marcos Zatti da Silva
Description
An account of the resource
O tripes Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) é uma das pragas mais importantes em cultivos protegidos, principalmente de plantas ornamentais e hortícolas. Entre os problemas enfrentados pelos agricultores estão a dificuldade de seu controle com o uso de inseticidas devido à sua preferência pelas partes internas das flores e a evolução de resistência aos agroquímicos. O objetivo da pesquisa foi caracterizar a resistência de F. occidentalis a espinosade e avaliar a frequência de insetos resistentes ao inseticida, em áreas comerciais de crisântemo de diversos municípios do Estado de São Paulo. Seleções para resistência a espinosade foram realizadas em laboratório, utilizando-se uma população de F. occidentalis, coletada em 2007 de um cultivo comercial de crisântemo em Campinas (SP). No decorrer de sete seleções para resistência, a CL50 de espinosade passou de 8,41 mg i.a. L-1 para 1111 mg i.a. L-1. Comparando-se a linhagem resistente (R) (selecionada) e a suscetível (S), a razão de resistência (CL50 R/CL50 S) atingiu valores de ≈280 vezes. Estabeleceu-se uma concentração discriminatória de 98 mg i.a. L-1 para o monitoramento da resistência de F. occidentalis a espinosade. O monitoramento foi realizado coletando-se 19 populações do tripes em áreas comerciais de crisântemo no Estado de São Paulo. Os bioensaios foram realizados com ninfas de segundo ínstar de F. occidentalis, colocadas em arenas de folha de feijão. As aplicações de espinosade, na sua concentração discriminatória, foram realizadas sobre as ninfas em torre de Potter. Os resultados indicaram alta variabilidade entre as populações com relação à suscetibilidade a espinosade. Foram observadas populações com até 40,7% de insetos resistentes. Este é o primeiro relato de resistência de F. occidentalis a espinosade no Brasil.The thrips Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) is one of the major pests in greenhouses, especially on ornamental plants and vegetables. Among the problems faced by farmers are the difficulties in the control of this pest with the use of insecticides because of its preference for the inner parts of the flowers and the evolution of resistance to agrochemicals. The objective of this research was to characterize the spinosad resistance in F. occidentalis and to assess the frequency of resistant insects in commercial chrysanthemum fields from several counties in the state of São Paulo (SP). Selections for resistance to spinosad were performed under laboratory conditions, using a population of F. occidentalis collected in 2007 in a commercial chrysanthemum field in Campinas (SP). In the course of seven selections for resistance, the LC50 of spinosad increased from 8.41 mg a.i. L-1 to 1,111 mg a.i. L-1. Comparing the resistant (R) and the susceptible (S) strains, the resistance ratio (LC50 R / LC50 S) reached values up to 280-folds. A discriminating concentration of 98 mg a.i. L-1 was established for monitoring the spinosad resistance in F. occidentalis. The survey was conducted by collecting 19 populations of thrips in commercial chrysanthemum fields in the state of São Paulo. The bioassays were conducted with second ínstar nymphs of F. occidentalis, placed in bean leaf disc arenas. The spinosad was sprayed at the discriminating concentration on the nymphs of thrips, using a Potter spray tower. The results indicated high variability in the susceptibility to spinosad among F. occidentalis populations. Populations with up to 40.7% of resistant insects were found. This is the first report on spinosad resistance in F. occidentalis in Brazil.
Date
A point or period of time associated with an event in the lifecycle of the resource
2013
Subject
The topic of the resource
Thripidae, chrysanthemum, crisântemo, monitoramento de resistência, resistance monitoring
Source
A related resource from which the described resource is derived
Bragantia
Publisher
An entity responsible for making the resource available
Instituto Agronômico de Campinas
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Agriculture (General)
Relation
A related resource
<a href="http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100006" target="_blank" rel="noreferrer noopener">http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100006</a>
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http://socictopen.socict.org/files/original/ff2b7b6492795c8055afa39e1ddfc0d5.pdf
a604e368eea75c5f83c51f063e90c41d
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Detección de Eurhizococcus colombianus (Hemiptera: Margarodidae) en mora por espectroscopía del infrarrojo cercano
Creator
An entity primarily responsible for making the resource
Elizabeth Meneses, Gloria Arango, Guillermo Correa, Orlando Ruíz, Luis Gonzalo Vargas, Juan Carlos Pérez
Description
An account of the resource
La selección de métodos apropiados para muestreo y análisis es un aspecto importante en el estudio de plagas subterráneas. El conocimiento de su biología, depende del uso de herramientas sensibles para su detección en el ambiente complejo del suelo y las raíces. Recientemente se ha propuesto el uso de espectroscopia infrarroja cercana (conocida como NIR, por su sigla en inglés) para el diagnóstico fitosanitario no destructivo en cultivos, aprovechando la manifestación de propiedades ópticas únicas para cada grupo de plantas y organismos. El objetivo de este trabajo fue evaluar el uso de espectroscopía NIR en muestras de hojas y suelo rizosférico, para detectar la presencia del insecto subterráneo Eurhizococcus colombianus en cultivos de mora (Rubus glaucus Benth.), en la región del Oriente antioqueño. La información obtenida en siete fincas distribuidas en cinco municipios indica que a través de los patrones espectrales de las hojas y el suelo rizosférico es posible clasificar las plantas con presencia o ausencia del insecto dentro de cada finca. Sin embargo, no fue posible establecer un modelo general para todas las fincas. Los resultados obtenidos permiten vislumbrar una herramienta no destructiva muy promisoria para detectar el insecto y entender las condiciones asociadas con su presencia en el cultivo, lo que favorecería el diseño de estrategias de manejo de este tipo de plaga, con base en el conocimiento de su ecología, ayudando así a la toma de decisiones ambientalmente amigables, razonables y oportunas por parte de los agricultores
Date
A point or period of time associated with an event in the lifecycle of the resource
2015
Subject
The topic of the resource
Detección de infestación, NIR, Rubus glaucus Benth, muestreos no destructivos, perla de tierra colombiana
Identifier
An unambiguous reference to the resource within a given context
10.15446/acag.v64n3.44729
Source
A related resource from which the described resource is derived
Acta Agronómica
Publisher
An entity responsible for making the resource available
Universidad Nacional de Colombia
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
Agriculture
Relation
A related resource
<a href="http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122015000300012&lng=en&tlng=en" target="_blank" rel="noreferrer noopener">http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122015000300012&lng=en&tlng=en</a>
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http://socictopen.socict.org/files/original/0c96973960ce6b99068877fb0e7815d7.pdf
de96588bde2035b6f10af0021d361ec9
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Agricultura sostenible
Description
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Dominio científico: Agricultura sostenible
Text
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Detección de la tendencia local del cambio de la temperatura en México
Creator
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René Lobato Sánchez
Description
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Lobato-Sánchez, R., & Altamirano-del-Carmen, M. A. (noviembre-diciembre, 2017). Detección de la tendencia local del cambio de la temperatura en México. Tecnología y Ciencias del Agua, 8(6), 101-116, DOI: 10.24850/j-tyca-2017-06-07. Registros de temperatura indican que tres de cada cuatro estaciones climáticas evaluadas en México señalan un calentamiento en el periodo 1950-2013, tomando como referencia al periodo base 1961-1990. Después de un análisis completo de registros climáticos en México, se determinó que solamente 112 registros cumplen con la calidad y estándares requeridos para el presente estudio, de ahí se seleccionó, de forma aleatoria, un subconjunto de 20 estaciones con tendencia positiva, representativas de entornos rurales y urbanos, distribuidas en las regiones de México. Se identificó que el periodo más reciente de calentamiento intenso inicia por lo general a mediados de la década de 1970, lo cual es congruente con la señal identificada por el Panel Intergubernamental de Expertos sobre el Cambio Climático para la temperatura media global. En las zonas rurales se observa un desfase de hasta 10 años en el inicio del periodo reciente de calentamiento en comparación con zonas urbanas para una misma región del país. El calentamiento y la diferencia entre periodos cálidos y fríos son mayor, regularmente, en áreas urbanas en comparación con las rurales.
Date
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2017
Subject
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Cambio climático, control de calidad, detección, temperatura, tendências
Identifier
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10.24850/j-tyca-2017-06-07
Source
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Tecnología y ciencias del agua
Publisher
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Instituto Mexicano de Tecnología del Agua
Coverage
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Hydraulic engineering, Water supply for domestic and industrial purposes
Relation
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<a href="http://www.revistatyca.org.mx/ojs/index.php/tyca/article/view/1435" target="_blank" rel="noreferrer noopener">http://www.revistatyca.org.mx/ojs/index.php/tyca/article/view/1435</a>
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http://socictopen.socict.org/files/original/e82c7d93ee087a47eaa502b0b04211aa.pdf
f79706bdba1a2bce6d97da6ed068d549
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Agricultura sostenible
Description
An account of the resource
Dominio científico: Agricultura sostenible
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Detección de malas hierbas en girasol en fase temprana mediante imágenes tomadas con un vehículo aéreo no tripulado (UAV)
Creator
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J.M. Peña, J. Torres-Sánchez, A. Serrano-Pérez, F. López-Granados
Description
An account of the resource
La discriminación de malas hierbas en fase temprana con técnicas de teledetección requiere imágenes remotas de muy elevada resolución espacial (píxeles <5 cm). Actualmente, sólo los vehículos aéreos no tripulados (UAV) pueden generar este tipo de imágenes. El objetivo de este trabajo fue evaluar imágenes UAV tomadas con una cámara visible a diferentes alturas de vuelo (40, 60, 80 y 100 m) y cuantificar la influencia de la resolución espacial en la discriminación de malas hierbas en fase temprana en un cultivo de girasol. Se aplicó un algoritmo de clasificación de imágenes basado en objetos, el cual se divide en dos fases principales: 1) detección de líneas de cultivo y 2) clasificación de cultivo, malas hierbas y suelo desnudo. El algoritmo resultó 100% eficaz en la detección de las líneas de cultivo en todos los casos (fase 1), así como en la detección de zonas libres de mala hierba en las imágenes tomadas a 40 y 60 m de altura. En las zonas con presencia de malas hierbas, los mejores resultados se obtuvieron en las imágenes tomadas a baja altura (40 m), con un 71% de marcos de muestreo clasificados correctamente (fase 2). La mayoría de los fallos de clasificación cometidos en todas las imágenes fueron falsos negativos, es decir, malas hierbas no detectadas debido a su pequeño tamaño en el momento de la captura de las imágenes. Por tanto, el siguiente paso sería desarrollar un estudio multitemporal para estudiar la detección de las malas hierbas en estados fenológicos más avanzados. Esto podría facilitar su discriminación en las imágenes y, por tanto, disminuir el porcentaje de falsos negativos en las clasificaciones.
Date
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2014
Subject
The topic of the resource
agricultura de precisión, alta resolución espacial, análisis de imágenes basado en objetos (OBIA), control localizado de malas hierbas, rango espectral visible
Identifier
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10.4995/raet.2014.3148
Source
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Revista de Teledetección
Publisher
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Universitat Politécnica de Valencia
Coverage
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Geography (General)
Relation
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<a href="http://polipapers.upv.es/index.php/raet/article/view/3148" target="_blank" rel="noreferrer noopener">http://polipapers.upv.es/index.php/raet/article/view/3148</a>