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1
artículo
Publicado 2012
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There is a growing call for inventories that evaluate geographic patterns in diversity of plant genetic resources maintained on farm and in species' natural populations in order to enhance their use and conservation. Such evaluations are relevant for useful tropical and subtropical tree species, as many of these species are still undomesticated, or in incipient stages of domestication and local populations can offer yet-unknown traits of high value to further domestication. For many outcrossing species, such as most trees, inbreeding depression can be an issue, and genetic diversity is important to sustain local production. Diversity is also crucial for species to adapt to environmental changes. This paper explores the possibilities of incorporating molecular marker data into Geographic Information Systems (GIS) to allow visualization and better understanding of spatial patterns of genet...
2
artículo
Electrodes for Dye Sensitized Solar Cells (DSCs) were made using ZnO nanoparticles deposited over conductive substrates of SnO2:F (FTO). ZnO nanoparticles were obtained by the wet ball milling technique. Then these particles were used to make a viscous paste which was deposited over the substrate by the dr. lade method. After sintering, the electrodes were sensitized with organic and metalorganic dyes like D35 and N719 respectively during 14 hours. Liquid electrolytes with redox mediators like iodide/ triiodide redox cuple and cobalt complexes were used. Also platinum and polymer (PEDOT) covers were used like counterelectrodes. Sealed cells reported efficiencies values as high as 1.6% and values for incident photo conversion efficiency (IPCE) close to 60% at 500nm.
3
artículo
Publicado 2022
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Avocado crop (Persea americana Mill.) is of great commercial importance due to its high profitability. However, it is being affected by various diseases and pests that affect yield and reduce fruit quality. The aim of this research was to develop methodologies for the evaluation of avocado plantations using different non-destructive technologies for rapid phenotyping and early detection of the incidence of diseases or damage due to stress in the stem. A plot of 0.7 ha. was evaluated, with a total of 44 individuals using Field-Map technology (dasometric and morphological characterization), RGB-multispectral images from Remotely Piloted Aircraft System (RPAS) (rapid phenotyping), while 15 individuals were evaluated using tomography (assessment of the internal state of the stem). The results with tomography indicated that there is a tree with wood rot of 14% with a lower acoustic speed with...
4
artículo
Publicado 2020
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This researchworkwas carried out under nursery conditions inMajes, Arequipa; The objective was to determine the adequate dose of Paclobutrazol in avocado seedlings of the Hass cultivar, in which a completely randomized design (DCA) was used, with four treatments, three repetitions, with a total of 12 experimental units and the test was performed of Tukey’s mean comparison. The treatments were: Control 0 ppm (T0), 150 ppm (T1), 300 ppm (T2) and 450 ppm (T3) per 200 L respectively, applying a broth volume of&...
5
artículo
Publicado 2020
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This researchworkwas carried out under nursery conditions inMajes, Arequipa; The objective was to determine the adequate dose of Paclobutrazol in avocado seedlings of the Hass cultivar, in which a completely randomized design (DCA) was used, with four treatments, three repetitions, with a total of 12 experimental units and the test was performed of Tukey’s mean comparison. The treatments were: Control 0 ppm (T0), 150 ppm (T1), 300 ppm (T2) and 450 ppm (T3) per 200 L respectively, applying a broth volume of&...
6
artículo
Publicado 2020
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This researchworkwas carried out under nursery conditions inMajes, Arequipa; The objective was to determine the adequate dose of Paclobutrazol in avocado seedlings of the Hass cultivar, in which a completely randomized design (DCA) was used, with four treatments, three repetitions, with a total of 12 experimental units and the test was performed of Tukey’s mean comparison. The treatments were: Control 0 ppm (T0), 150 ppm (T1), 300 ppm (T2) and 450 ppm (T3) per 200 L respectively, applying a broth volume of&...
7
artículo
Publicado 2022
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Currently, the contribution to the PBI of the construction sector has increased, which generates a greater demand for its products. Also, the production of paints fails to meet the demand generated, so the problem to be addressed in this article is the use of production capacity in a manufacturer of industrial paints with an annual turnover of approximately 80 million soles, which currently uses an average of 53.29% of its installed capacity, below the 69.7% average of the sector, generating large losses of money for the company. The case study was carried out so that it can be replicated with other companies with a similar context and generate added value to the sector, therefore an improvement model is proposed by applying the tools and methodology of Aggregate Planning, Autonomous TPM and SRM through the integrated application of the above mentioned providing an efficient production p...
8
artículo
Publicado 2020
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The application of plant growth promoting rhizobacteria (PGPR) constitutes an ecological practice that contributes to agricultural production systems and is presented as an option for reducing the use of chemical fertilizers. The tomato is in high demand around the world, its production requires efficient nutrition to supply the quantity and quality demand that the market requires, therefore, in the present investigation two bacterial strains were evaluated: Bacillus licheniformis (IB10) and Bacillus megaterium (CT11) as growth promoters in kidney tomato seedlings by testing in seedbeds. Statistical differences are evident in the different variables evaluated, the application of specific B. licheniformis at the time of planting caused an increase of 10% in the thickness of the stem and a 100% increase in the amount of dry biomass, the weekly application of B. megaterium problems the phot...
9
artículo
Publicado 2020
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The application of plant growth promoting rhizobacteria (PGPR) constitutes an ecological practice that contributes to agricultural production systems and is presented as an option for reducing the use of chemical fertilizers. The tomato is in high demand around the world, its production requires efficient nutrition to supply the quantity and quality demand that the market requires, therefore, in the present investigation two bacterial strains were evaluated: Bacillus licheniformis (IB10) and Bacillus megaterium (CT11) as growth promoters in kidney tomato seedlings by testing in seedbeds. Statistical differences are evident in the different variables evaluated, the application of specific B. licheniformis at the time of planting caused an increase of 10% in the thickness of the stem and a 100% increase in the amount of dry biomass, the weekly application of B. megaterium problems the phot...
10
objeto de conferencia
Publicado 2022
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La presente propuesta de mejora tiene como objetivo determinar el efecto que la aplicación de la metodología de mantenimiento productivo total tiene en el servicio de mantenimiento de molinos SAG. Para ello, se siguió un enfoque de investigación no experimental porque no se manipulará la variable de estudio y propositiva, porque permitirá realizar una propuesta a los servicios de mantenimiento de molinos SAG basado en el TPM. En esta investigación se emplearon técnicas de recolección de información como observación, encuesta y entrevista. A continuación, se muestran los aspectos generales sobre el problema de la investigación, se describen los planteamientos teóricos relacionados con la presente propuesta de mejora, se realiza el diagnóstico situacional de la empresa, donde hace mención a los problemas existentes en el servicio de mantenimiento y sus respectivas causas ra...
11
tesis de grado
Publicado 2017
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The study describes the procedure of grafting mango, avocado and apple, for its diffusion into 44 and 43 homegardens from Pan de Azúcar annexed, and Pucabamba annexed respectively, both located at Huayo district of Pataz, La Libertad. Besides, it was measured the adoption of grafts by farmers, and surveys were carried out to explain the level of adoption because of socioeconomic characteristics of farmer, characteristics of the orchard, and technical assistance._x000D_ Mango and avocado rootstocks raised from collected seeds in Chagual homegardens, located at the south of Pataz district. The scions were mango ‘Kent’ and avocado ‘Fuerte’, both bought at a plant nursery located in Virú. They were grafted apple Israel scions onto yellow creole quince, selected from homegardens in Huayo. Rootstocks propagation was by cutting from selected mother plant grown on homegardens in Huayo....
12
objeto de conferencia
El texto completo de este trabajo no está disponible en el Repositorio Académico UPN por restricciones de la casa editorial donde ha sido publicado.
13
tesis de grado
Publicado 2021
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La presente investigación tiene el objetivo de determinar el efecto que tiene la aplicación de harina de hueso de pollo obtenida de residuos sólidos en el desarrollo de la biomasa del “tomate” (Lycopersicon esculentum Mill). Para lo cual se realizó un estudio de caracterización de residuos sólidos urbano comerciales de las pollerías de la ciudad de Moyobamba, a partir de esto se aprovechó los residuos de huesos de pollo para preparación de harina de hueso mostrando un contenido de fósforo de 155504 ppm; el cual se aplicó al cultivo agrícola de “tomate”, en un ensayo instalado bajo un diseño DBCA, con 03 bloques y 04 tratamientos; el T1 como testigo, el T2 con 7.5 g, el T3 15 g, el T4 con 30g, de harina de hueso cada uno. En la parcela de investigación se evaluaron: altura de la planta, número de hojas y brotes por planta, número de frutos por planta y peso seco de...
14
tesis de grado
Publicado 2014
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Se evaluó el efecto de la aplicación de las coberturas biodegradables y temperatura sobre el color, firmeza, pérdida de peso y la aceptabilidad general en la palta (Persea americana Mill) variedad Fuerte, durante 30 días de almacenamiento. Se estudió la gelatina-almidón y gel aloe vera como base de las coberturas, además se utilizó una muestra control (sin cobertura) y; 6 y 10 °C como temperaturas de almacenamiento. La superficie de las paltas fue lavada y desinfectada durante 1 min con hipoclorito de sodio a 150 ppm y secadas posteriormente. Las paltas secas fueron sumergidas en cada una de las soluciones de cobertura y secadas con aire, para la formación de las coberturas biodegradables. Cada 10 días las paltas fueron evaluadas en color, firmeza y pérdida de peso. La evaluación sensorial se realizó al final del almacenamiento. El análisis de varianza indicó que existió...
15
artículo
Electrodes for Dye Sensitized Solar Cells (DSCs) were made using ZnO nanoparticles deposited over conductive substrates of SnO2:F (FTO). ZnO nanoparticles were obtained by the wet ball milling technique. Then these particles were used to make a viscous paste which was deposited over the substrate by the dr. lade method. After sintering, the electrodes were sensitized with organic and metalorganic dyes like D35 and N719 respectively during 14 hours. Liquid electrolytes with redox mediators like iodide/ triiodide redox cuple and cobalt complexes were used. Also platinum and polymer (PEDOT) covers were used like counterelectrodes. Sealed cells reported efficiencies values as high as 1.6% and values for incident photo conversion efficiency (IPCE) close to 60% at 500nm.
16
tesis de grado
Publicado 2023
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Universidad Nacional Agraria La Molina. Facultad de Agronomía. Departamento Académico de Horticultura
17
tesis de grado
Publicado 2019
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La investigación titulada “Estrategias de promoción y su relación en las ventas de la empresa molino la Herradura S.A.C. – Distrito de Picota, en el periodo 2017” tuvo como objetivo general determinar la relación entre las estrategias de promoción y las ventas de la empresa Molino La Herradura S.A.C. – Distrito de Picota, en el periodo 2017. El tipo de estudio aplicada; el diseño de la investigación es no experimental: asimismo la investigación conto con una muestra de estudio de 62 clientes, las cuales se utilizaron como recolección de datos a encuestas para ambas variables, que fueron aplicados a lo que estipula la muestra. Pudiendo llegar así la siguiente conclusión, se evidencio la relación entre ambas variables, ya que el valor “p” (Valor de significancia = 0.00) obtenido es menor a 0.05. Así mismo, debido a que el valor “r” es de 0,652, indica una corre...
18
objeto de conferencia
Publicado 2015
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We report the results of the application of the Model-based Predictive Control (MPC) algorithm for a 3×3 MIMO balls mill grinding system by using computational simulation and Monte Carlo data generation. For this purpose, the system has been identified through a reduced scheme of Volterra formalism by which the proposed methodology has required to employ up to 20 parameters. Subsequently, the model enters in a framework of MPC which targets to control the particle size, one of the most important output variables in this study. According to the simulation results the system identification error is of order of 3%, whereas the MPC scheme applied to control a desired set-point namely 75 %-200mesh is accompanied by a deviation of ±5%. Since the balls mill grinding circuit is a nonlinear system, it is expected that the system might collapse as consequence of the accumulated circulant load. T...
19
artículo
Publicado 2019
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Tomato (Solanum lycopersicum) is a crop of global importance that has center of origin in Peru, with 11 species of wild relatives (CWR) occurring in the country. These CWR contain genetic material that could be used to improve currently cultivated species, and that is usually stored ex situ in germplasm banks. Hence, assessing the representativeness of germplasm banks is important to strengthen genetic improvement of tomatoes as well as their resilience to globally changing conditions. Here, we used gap analysis methodology on the 11 species of tomato CWR occurring in Peru. This methodology consists in seven steps that consider representativeness in terms of herbaria/germplasm banks, geography and environments within the country, in order to establish conservation priorities. We also assessed conservation priorities for the Instituto Nacional de Innovación Agraria (INIA), which is the m...
20
tesis doctoral
Publicado 2021
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Universidad Nacional Agraria La Molina. Escuela de Posgrado. Doctorado en Agricultura Sustentable
