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1
tesis de grado
Publicado 2023
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The allometric model was determined to estimate the total height of the forest species of the lower hill of the forest concession 16-LOR-MAY/CON-MAD-2019-018, district of Napo, Loreto, Peru. The forest census data of the commercial species of the operational plan (PO) 1 of the PC 1 cutting plot for forest use permits was evaluated. The results indicate that 12 273 trees were registered, grouped into 52 commercial forest species and 22 botanical families. The average total diameter-height relationship of the trees was adjusted to the distribution model of the cubic type (Y = 39,750 + (-0,582 x DAP) + (0,006 x DAP2) + (-2,007E-5 x DAP3)), with a correlation coefficient of r=0,967 and a determination coefficient of R2=0,935. The hypothesis is rejected in the sense that the linear allometric model did not fit the relationship between the diameter and the total height to estimate the height o...
2
tesis de grado
Publicado 2023
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The study was carried out in the plantation under canopy No. 35 of CIEFOR - Puerto Almendras, made up of the species Copaifera paupera "copaiba". The objective was to determine the increase in diameter and height, survival and quality of the plants. The average increase in diameter of the C. paupera plantation was 0.99 mm, while the average increase in height of the plantation was 100.29 cm. The Chi-square test indicates that there is a significant difference between the mean increases in diameter – height and strips (p-value= 0.00 < α= 0.05). Likewise, the plantation reached a survival rate of 85%, while mortality was 15%. The largest number of plants with GOOD quality was presented by 115 seedlings representing 67.6% plants, followed by REGULAR quality with 50 live individuals indicating 29.4%. A total of 5 plants (2.9%) were identified with BAD quality. It is necessary to continue ...
3
tesis de grado
Publicado 2023
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The study was carried out at CIEFOR - Puerto Almendra, in forest plantation Nº. 7 of one hectare, evaluating 200 plants of Schizolobium parahybum "pashaco". The greatest increase in diameter was presented by strip 8, with 1,54 cm. Likewise, the greatest increase in height was presented by strip 2 with 129,70 cm. The Tukey test indicates that there is a significant difference between the average increases in diameter - height and the strips (p-value= 0.00 < α= 0,05). The plantation shows 85,5% survival, while Mortality reached 14,5%. The highest number of plants presented REGULAR quality with 110 seedlings, which represents 63,95% of the total, followed by GOOD quality with 53 individuals (30,81%) and BAD quality with 9 represents 9% of the total. At a general level in the experiment, Regular quality was recorded. It is necessary to carry out permanent maintenance to ensure the success ...
4
tesis de maestría
Publicado 2009
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Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Producción Agrícola
5
tesis de grado
Publicado 2023
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The study was conducted at the facilities of the Forestry Research and Teaching Center CIEFOR "Puerto Almendra" and the project "Provenance trials of forest and agricultural species of the Peruvian Amazon" attached to the National University of the Peruvian Amazon (UNAP) through the Faculty of Forestry Sciences, located in the district of San Juan Bautista, province of Maynas, Loreto region. The main objective was to know the dynamics of growth, survival and quality of a plantation of Cedrelinga cateniformis D. Ducke (Fabaceae) in a degraded area of CIEFOR "Puerto Almendra". The results report that the greatest increase in diameter was recorded in subplot 3, with a value of 2.79 cm increase at the end of the evaluation period. On the other hand, the greatest increase in height occurred in subplot 1, with a value of 104.58 cm increase at the end of the evaluation period. Likewise, there w...
6
tesis de grado
Publicado 2023
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The objective of the study was to determine the increase in diameter and height of Carapa guianensis plants in Forest Plot No. 4 of CIEFOR – Puerto Almendras, in a 3-year-old under-canopy plantation. The average increase in diameter of the 171 plants evaluated was 5,2 mm, while the average increase in height was 14,6 cm. Survival averaged 87% and mortality reached 13% in the plot. GOOD quality plants with 94 seedlings that represented 54,97 liters of the total seedlings evaluated followed by REGULAR quality with 68 live samples showing 39,67% and finally low quality samples were observed. with 9 seedlings representing a total of 5,26%. Plant quality by quality factor ranges from fair to good. Likewise, it is recommended to carry out periodic evaluations in plot No. 4 of C. guianensis.
7
tesis de grado
Publicado 2023
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The objective of this study was to determine the increase in diameter and height, mortality, survival and quality of C. guianensis plants in plantation No. 4 of CIEFOR – Puerto Almendra, Iquitos. The average diameter increase was 2.8 mm in three months of evaluation. Likewise, the average increase in height of the seedlings was 8.2 cm. The plantation had a survival of 87% (174 live plants), while plant mortality was 13% (26 dead plants). The largest number of plants presented GOOD quality with 127 seedlings, representing 73% of the total. Plants with REGULAR quality reached 39 individuals representing 22.4%: plants with BAD quality presented 8 seedlings, representing 4.6% of the total. As for the analysis of variance, it was determined that there is a significant difference between the strips and the average increase in diameter, however there is no difference in the average increase i...
8
tesis de grado
Publicado 2023
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The study was conducted at the facilities of the Forestry Research and Teaching Center CIEFOR "Puerto Almendra" and the project "Provenance trials of forest and agricultural species of the Peruvian Amazon" attached to the National University of the Peruvian Amazon (UNAP) through the Faculty of Forestry Sciences, located in the district of San Juan Bautista, province of Maynas, Loreto region. The main objective was to know the dynamics of growth, survival and quality of a plantation of the promising species Caryodendron orinocense H. Karst "metohuayo" (Euphorbiaceae), Puerto Almendra, Loreto. The type of research was analytical, cross-sectional, prospective, quantitative approach, non-experimental design. The sample consisted of 100 individuals of Caryodendron orinocense H. Karst "metohuayo" included in a plantation of 0.5 hectares with a distance of 5 meters between plants, installed in ...
9
tesis de grado
Publicado 2012
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This research paper entitled "Response of yield and components of the architecture of the bean plant (Phaseolus vulgaris L.) According to plant density", had as objectives: To study the response of yield and components of plant architecture according to the density and determine the economic analysis of the treatments. Was conducted between February and May 2012 in the Fundo Miraflores de la Universidad Nacional de San Martin - Tarapoto. Design We used a randomized complete block with a factorial arrangement of 2 x 5, with 3 blocks and 10 treatments. Being the Factor A = bean varieties (Panamito red and brown) and Factor B = Seeding (b1 = 15 cm x 60 cm, b2 = 20 cm x 60 cm, b3 = 25 cm x 60 cm, b4 = 30 cm x 60 cm and b5 = 35 cm x 60 cm). The variables evaluated were: Percentage of emergency, lateral branches per plant, nodes per lateral branch, Knots on main stem nodes per square meter, le...
10
tesis de grado
Publicado 2013
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El objetivo de la investigación fue determinar las relaciones alométricas del diámetro, altura y copa de 18 especies arbóreas juveniles clasificadas según su tolerancia a la sombra y estratos verticales y con ella evaluar si especies que pertenecen a la misma agrupación ecológica tienen comportamientos similares (patrones interespecificos). De acuerdo a los resultados obtenidos en la mayoría de las variables evaluadas solamente habían pocos patrones alométricos de acuerdo a las categorías ecológicas; por consiguiente, las relaciones alométricos muchas veces no siguen las predicciones de acuerdo a la teoría de la adaptación ecológica a pesar que todas las relaciones alométricas fueron fuertes para cada una de las especies. De las especies arbóreas juveniles, parece ser que su arquitectura no es muy bien predicho por las agrupaciones ecológicas por lo que se concluye, qu...
11
tesis de grado
Publicado 2015
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ORIGEN ORIGEN MEXICANO ORIGEN ASIÁTICO EVOLUCIÓN Y VARIEDAD DEL MAÍZ MORFOLOGÍA DE LA PLANTA DESCRIPCIÓN BOTÁNICA DE LA PLANTA DE MAÍZ REQUERIMIENTO DEL CULTIVO VARIEDADES DE MAÍZ FACTORES QUE INCIDEN EN UNA BUENA SIEMBRA NECESIDADES DE AGUA DEL CULTIVO TRABAJOS DE INVESTIGACIÓN REALIZADOS
12
libro
Publicado 2014
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PROYECTO PD 622/11 Rev.1 (F) “Comercialización de semillas, plantones y productos maderables de especies nativas, para mejorar condiciones de vida y fortalecer políticas regionales forestales en la región Amazonas/Perú: caso piloto de la Comunidad Campesina Taulia Molinopampa” financiado por la Organización Internacional de las Maderas Tropicales (OIMT).
13
tesis de grado
Publicado 2023
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The study was carried out in the forest plantation under twelve of Aniba rosaeodora of CIEFOR - Puerto Almendra. The plants were evaluated in 120 days in order to determine their growth, survival and quality. The plantation presented an average increase in diameter of 1.91 mm. Likewise, the average increase in height of the seedlings was 12.42 cm. The analysis of variance of the increase in height presented a significant difference in the averages (Sig = 0.036). The strips presented a survival of 88.5% (177 live plants), while plant mortality reached 11.5% (23 dead plants). On the other hand, 155 plants presented GOOD quality (87.6%). The quality coefficient of the plantation was from Good to Excellent. It is recommended to carry out permanent and periodic evaluations in order to ensure the success of the plantation over time, as well as to carry out similar studies with other native for...
14
tesis de maestría
Publicado 2017
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El trabajo de tesis expuesto enfocó el cálculo y modelamiento de un filtro pasivo trifásico de armónicos de banda ancha. El cual atiende la necesidad de solucionar un problema de salida de operación de la maquina Aoky por presencia de una máquina John Wha generadora de armónicos. El filtro pasivo trifásico pasabajos es calculado de forma simple y con ayuda de iteraciones en matlab se logra obtener un filtro mejorado que logra atenuar los armónicos y también mejorar el factor de potencia, asi como alejar las frecuencia de resonancia que pudieran afectar las cargas próximas sensibles a esta distorsión. Finalmente se somete el sistema a un flujo de carga armónico para evaluar el impacto del filtro en la red, según el método de penetración armonica simple. Ello permitirá mejorar la economía de planta al elevar los niveles de producción en la planta en estudio, evitando una...
15
tesis de grado
Publicado 2014
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ALIMENTO BALANCEADO REQUERIMIENTOS DE LOS ALIMENTOS BALANCEADOS ETAPAS DEL PROCESO DE ALIMENTO BALANCEADO RECEPCIÓN Y ABASTECIMIENTO DE MATERIAS PRIMAS FORMULACIÓN MOLIENDA MEZCLADO PELETIZADO CONTROL DE PROCESOS ESTRATEGIAS DE CONTROL Y TIPOS DE SISTEMAS DE CONTROL DEFINICIÓN DE INSTRUMENTACIÓN CONTROLADORES LÓGICOS PROGRAMABLES MÉTODO DE SINTONIZACIÓN
16
tesis de grado
Publicado 2011
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Estudia el comportamiento de la madera en la fabricación de pulpa para papel, basado en características cualitativas y cuantitativas de la estructura celular de la rama de 20 especies forestales existentesen el área CIEFOR.
17
artículo
Publicado 2020
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El objetivo de esta investigación fue analizar la calidad de plantas de “eucalipto urograndis” (Eucalyptus x urograndis) producidas en un vivero de tecnología intermedia en Puerto Inca (Huánuco, Perú). Se evaluó características morfológicas y fisiológicas de 55 plantas de 150 días de edad y listas para su salida a campo definitivo (intensidad de muestreo: 0.77%). Los resultaron fueron: daño de meristemo principal (41.8%), problemas fitosanitarios mediante manchas foliares (40%), daños mecánicos (27.3%) y bifurcación (9.1%) y alta incidencia de malas hierbas (90.9%). De acuerdo con estos resultados el lote de plantas se calificó como de Mala Calidad (89.1%). En correspondencia a Índices de Calidad y tomando como referencia a Conafor (2005), las plantas fueron calificadas como Baja Calidad para los Índices de Dickson (ID) y Esbeltez (IE). Sin embargo, la Relación Parte...
18
otro
Publicado 2018
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It is very important that the students of initial education have basic knowledge about the plants, that is, the main parts like: the root, the stem, the leaves, seeds and fruits, likewise, it is important that they know the functions that each of these meets and performs in relation to the plant by reason of its own existence and also in terms of the benefit achieved by man on a daily basis, with the multiple uses that are given to the parts of the plants, since they not only they provide us with purified air, but they also contribute enormously to the fact that life on planet earth is healthy and sustainable.
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20
tesis de grado
Publicado 2013
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El funcionamiento adecuado de la etapa de extracción por solventes es determinante en la etapa siguiente de electroobtención ya que permite obtención de cátodos de cobre de alta pureza, lo cual motiva a la empresa a buscar alternativas para mejorar dicha etapa, cumpliendo con los requerimientos exigidos por el proceso, por lo tanto el presente estudio trata sobre la importancia de tener un control estricto y parámetros definidos en lo referente a la proporción de dilución del orgánico , en las etapas de extracción y re extracción por solventes.
