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1
tesis de maestría
Publicado 2013
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OBJETIVO:Determinar los efectos deletéreos de los ácidos grasos constituyentes del aceite y/o grasa denominada comercialmente “Light“ sobre el perfil lipídico y tejido cardiovascular de ratas albinas sometidas a dietas con requerimientos normales durante 45 días de experimentación. MATERIAL Y MÉTODOS: Se trabajó con 30 ratas machos de 21 días de edad, de raza Wistar, distribuidas en tres grupos. Se les proporcionó dietas con energía y proteínas de acuerdo a sus requerimientos durante 45 días. El primer grupo recibió como fuente de ácidos grasos los provenientes de Aceite Vegetal de Cocina (dieta A), el segundo grupo Aceite Vegetal de Cocina denominada “Light” (dieta B) y el tercer grupo Margarina Vegetal denominada “Light” (dieta C). RESULTADOS: Se registró un incremento de peso en los tres grupos y hubo diferencias significativas en la composición corporal (p...
2
artículo
Publicado 2023
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This study was carried out to determine the variation factors in the growth of Saanen offspring in a commercial dairy farm in the province of Buenos Aires, Argentina. The sex and initial weight of the offspring were evaluated, as well as the number of lactations, type and season of delivery of the dams. The study included 164 kids born in 2019. Body weight was recorded at 20 days (P20) of age and every 15 ± 3 days until the final stage of artificial rearing (75 ± 5 days). Daily weight gain (GDP) was calculated from P20 to final (P75). Multivariate analysis of variance was used to evaluate the effect of lactation number, type and season of delivery of the dams, and initial weight of the offspring on GDP and P75. The GDP and P75 of the Heavy kids (131 ± 4.42 g/day and 12.4 ± 0.3 kg) and those born in Winter (143 ± 5.22 g/day and 12.7 ± 0.3 kg) were significantly higher than the Light...
3
tesis de maestría
Publicado 2019
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El presente trabajo de investigación se realizó en la Universidad Nacional de la Amazonia Peruana, proyecto Vacunos de la Facultad de Agronomía ubicado en el Fundo de Zungarococha a 30 minutos de la ciudad de Iquitos, el objetivo fue determinar la mejor proporción de vacaza y aserrín sobre las características agronómicas y rendimiento Brassica oleraceae L. Repollo variedad Tropical de Light. Se emplearon 4 concentraciones de estiércol de ganado más aserrín en todas las unidades experimentales de 3 m2 más 3 000 lombrices de Eisenia foetida, la evaluación se realizó a los 90 días después de la siembra. El diseño estadístico utilizado fue Diseño Completamente al Azar, con cuatro tratamientos y cuatro repeticiones, los tratamientos en estudio fueron: T0 (100 % de estiércol de vacunos), T1 (90% de estiércol de vacuno + 10% de aserrín), T2 (80% de estiércol de vacuno + 20...
4
artículo
Publicado 2023
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The use of concrete bricks in buildings causes 12% of structural failures due to the structural overload generated by masonry walls made with this type of material. In this research, it was proposed to reduce the weight of Type I concrete bricks without affecting their resistance, for which materials such as banana fiber and concrete demolition waste were added to generate a reduction in the weight of the bricks due to to their properties. Similarly, rice husk ash is incorporated to maintain the resistance of the concrete bricks. Four dosages were designed (M0, M1, M2 and M3) with which the different concrete mixtures and bricks were prepared. Concrete control tests were carried out (settlement, temperature, and unit weight), additionally, hardened concrete tests were carried out (warping, absorption, dimensional variation, and weight of the units). In relation to the main objective of t...
5
artículo
Publicado 2024
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Comprender la relación entre la resistencia del caupí a las plagas del campo y del almacenamiento mejorará las estrategias de manejo de plagas y facilitará el desarrollo de genotipos mejorados con mayor resistencia. Por lo tanto, este estudio se realizó para evaluar el desempeño de dieciséis (16) genotipos de caupí bajo la infestación de plagas de insectos en el campo y en el almacenamiento para identificar genotipos con genes de resistencia combinada para una posible mejora. Los genotipos se plantaron en las estaciones de Ilora e Ibadan del Instituto de Investigación y Capacitación Agrícola (IAR&T), Nigeria. El experimento de campo se planteó en un diseño de bloques completos al azar con tres repeticiones. Se recogieron datos sobre infestación de insectos, características agronómicas y de rendimiento. También se examinaron semillas de los 16 genotipos para detectar...
6
tesis doctoral
Publicado 2022
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Photoelectrochemical (PEC) processes have become an efficient and viable method for solar energy conversion into zero-emission fuels by harnessing and storage the power of the sun, which offers an environment-friendly approach. Hydrogen is considered as a sustainable and suitable energy alternative in comparison to energy systems based on the consumption of conventional hydrocarbon fuels. In particular, hydrogen production by PEC water splitting represents an attractive alternative to enhance the efficiency of water splitting process using sun light. Current research in this field is devoted to the fabrication and evaluation of new photoactive materials that upon sunlight absorption enable water-splitting PEC reactions with high efficiency and durability. Silicon based compounds offer a good opportunity as photoactive material due to its high abundance and current scalable technologies. ...
7
tesis de grado
Publicado 2004
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Objetivos: Determinar el efecto de la Capreomicina en la depuración de Creatinina Calculada , en pacientes con Tuberculosis Pulmonar Multidrogoresistente. -Determinar el perfil epidemiológico; la frecuencia de uso de Capreomicina; deterioro de la Depuración de Creatinina; el uso de Fármacos AntiTBC y condición de Egreso de los pacientes. Método : Se realizo un estudio descriptivo, de tipo retrospectivo en pacientes con Tuberculosis Pulmonar Multidrogoresistente; que recibieron la Droga Capreomicina como tratamiento Individualizado complementario; que fueron atendidos en el Servicio de Neumología del Hospital Nacional “Guillermo Almenara Irigoyen “de EsSALUD entre los años 2000-2002; para lo cual se revisaron 358 Historias Clinicas ,de las cuales 105 recibieron la droga ,100 pacientes cumplieron con los criterios de inclusión. Resultados : El 62% de pacientes fueron del géne...
8
tesis doctoral
Publicado 2021
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The coriander considered one of the most aromatic species in the world; Its management under protection allows to improve its vegetative adaptation, the main objective was to determine the effect of the periods of sunlight on the phenotypic behavior of Coriandrum sativum L. in aluminet mesh house, it seeks to take better advantage of the genetic potential when growing in protected environments. The completely Random Design was used with the treatments: open field (T0), aluminet house solar light from 9.0 am (T1), aluminet house solar light all day (T2), aluminet house solar light until 3.0 pm (T3). Direct sowing was carried out with a continuous stream, in rows 3.0 cm deep and 3.0 cm wide in an approximate amount of 50 seeds per furrow of 1.0 m long, the seeds were covered with the soil for their germination. The open field cultivation showed higher averages than under the aluminet mesh ...
9
artículo
Publicado 2024
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NITROGEN-FIXING CYANOBACTERIAL CONSORTIA ARE AN ALTERNATIVE TO THE INDISCRIMINATE USE OF CHEMICAL FERTILIZERS THAT AFFECT THE ENVIRONMENT, FIX ATMOSPHERIC NITROGEN, AND CAN THEREFORE BE USED AS PLANT GROWTH PROMOTERS, SYNTHESIZE VARIOUS SUBSTANCES SUCH AS AUXINS, VITAMINS, AND TOTAL PROTEINS, AND FIX ATMOSPHERIC BIOFERTILIZERS AND SOIL CONDITIONERS. THE PRESENT STUDY AIMED TO OBTAIN AND DEVELOP, BY BIOTECHNOLOGICAL MEANS, TWO CONSORTIA OF CYANOBACTERIA ISOLATED FROM THE ROOT AND RHIZOSPHERE OF CARICA PAPAYA GROWN IN SANDY LOAM SOIL. THE CULTURE WAS CARRIED OUT IN BLUE GREEN MEDIUM WITHOUT MODIFIED NITROGEN (BG110), WITH AERATION OF 0.32 L MIN−1, AT A LIGHT INTENSITY OF 48.83 ΜEM−2S−1, AND A TEMPERATURE OF 22 ± 2 °C. TWO CONSORTIA CONSISTING OF NOSTOC COMMUNE, APHANOTHECE MINUTISSIMA, PLANKTOTHRIX SP. (C1), NOSTOC COMMUNE, CALOTHRIX SP., AND APHANOTHECE MINUTISSIMA (C2) WERE ISOL...
10
tesis de grado
Publicado 2019
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El trabajo de Investigación titulado “Respuesta a la exposición de dos tipos de color de luz en la fase de inicio del pollo de engorde de la línea Cobb 500 en el Distrito de Teniente Cesar López Rojas – Shucush-Yacu”, se llevó a cabo en el centro de producción de aves de la Municipalidad Distrital de Teniente Cesar López Rojas- Shucush-yacu y tuvo como objetivo establecer la influencia que ejerce la exposición de dos tipos de color de luz en la fase de inicio. Los parámetros evaluados: consumo de alimento, incremento de peso, conversión alimenticia e índice de mortalidad, en 180 pollos de la línea Cobb 500 de un día de edad hasta los 21 días, el diseño estadístico empleado fue el diseño completamente al azar con tres tratamientos y cuatro repeticiones y un grado de confiabilidad de (P<0.05). Los Tratamientos: T0 = luz de color blanca; T1 = luz de color verde y T2 =...
11
tesis de grado
Publicado 2022
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Lettuce is one of the olive species that is most cultivated in the Amazon of all the vegetables and the majority in traditional systems; the hydroponic technique can improve its vegetative adaptation in the Loreto region, the main objective was to determine the effect of sunlight intensity on the yield of Lactuca sativa L. in a hydroponic system. The aim is to improve the genetic potential when cultivating in systems of laminar flow of nutrients under climatic conditions in the tropics. The completely randomized design was used with the treatments: Without shade and with 35% shade. The transplant of seedlings grown in a hydroponic box was carried out at the age of 15 days with an average height of 8 cm, the definitive management was in 3” diameter PVC tubes at a distance between plants of 0.20 m and between tubes of 0.20 m. The shaded crop showed statistical significance for plant heig...
12
tesis de grado
Publicado 2019
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Universidad Nacional Agraria La Molina. Facultad de Zootecnia. Departamento Académico de Nutrición
13
tesis de grado
Publicado 2019
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El presente trabajo de investigación “Horas de luz solar en el desarrollo vegetativo de aloe vera “Sábila” en Iquitos. Loreto- 2017”, se realizó bajo las condiciones de climáticas del bosque húmedo tropical. El factor principal del estudio es el periodo de horas de luz (06 horas y 12 horas (grupo control 1 = las plantas recibieron medio día de luz solar; grupo control 2= las plantas recibieron todo el día luz solar). El objetivo principal fue evaluar si el periodo de horas de luz solar influye en el comportamiento del desarrollo vegetativo de la sábila. El diseño de la investigación es experimento verdadero, con dos tratamientos y 28 replicaciones. Las plantas de sábila se criaron en macetas conteniendo tierra suelta, materia orgánica y estiércol de aves de corral, la mezcla fue uniforme para cada unidad experimental (macetas de plástico). En el análisis de los res...
14
tesis de grado
Publicado 2021
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En la presente investigación, se realizó un análisis comparativo de las propiedades físicas - mecánicas de un Concreto f´c = 210 kg/cm2, aditivado con un plastificante HP 300 de la marca ULMEN, en adelante denominado Concreto Patrón; respecto a otros Concretos, también aditivados, pero con sustitución del Agregado Fino (Arena), por Vidrio Reciclado Molido (VRM) en diferentes porcentajes de sustitución (50%, 75% y 100%). Los concreto fueron elaborados con Cemento Portland Tipo I y Según el diseño de mezclas DIM 1045 (Metodologia alemana). El Ensayo de Conductividad Térmica, se realizó bajo la norma ASTM C177-13, norma que detalla el procedimiento y el aparato de medición, el cual fue diseñado y elaborado por los investigadores, para los bloques de concreto a ensayar. De igual manera para el Ensayo de Transmitancia de luz (Traslucidez), se diseñó y desarrollo un equipo qu...
15
tesis de grado
Publicado 2022
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Universidad Nacional Agraria La Molina. Facultad de Agronomía. Departamento Académico de Fitotecnia
16
artículo
Publicado 2020
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Current research indicates that the changes that accompany aging (feeling of insecurity, modification of lifestyle, restriction of the social environment, loss of family and friends, and less psycho-physical autonomy) may favor the appearance of depressive symptoms. However, there are few studies that address this issue, including rural areas. Therefore, the present work seeks to identify the risk of depression and predisposing psychosocial factors in older adults in rural and urban settings. Therefore, the present work seeks to identify the risk of depression and predisposing psychosocial factors in older adults in rural and urban settings. For this purpose, a descriptive-comparative study was carried out. 80 people over 65 from rural and urban areas in the south of the province of Misiones participated. Depression was assessed with the GDS-15, and predisposing factors with a semi-struc...
17
artículo
Publicado 2020
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Current research indicates that the changes that accompany aging (feeling of insecurity, modification of lifestyle, restriction of the social environment, loss of family and friends, and less psycho-physical autonomy) may favor the appearance of depressive symptoms. However, there are few studies that address this issue, including rural areas. Therefore, the present work seeks to identify the risk of depression and predisposing psychosocial factors in older adults in rural and urban settings. Therefore, the present work seeks to identify the risk of depression and predisposing psychosocial factors in older adults in rural and urban settings. For this purpose, a descriptive-comparative study was carried out. 80 people over 65 from rural and urban areas in the south of the province of Misiones participated. Depression was assessed with the GDS-15, and predisposing factors with a semi-struc...
18
artículo
Publicado 2018
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Pretreatments were made to a Pima cotton jersey knit with yarn number Ne 30/1, with two processes: scouring and bleaching to obtain a hydrophilic material with a whiteness degree that allows dyeing of light colors and whites. The trials were developed at a laboratory level at the National University of Engineering (Textile Laboratory No. 24) using beakers and manual agitation, dyeing was executed on the Conmatex machine with vertical movement and to evaluate the degree of whiteness, the spectrophotometer (Datacolor 550, software Color Tools versión: 1.1.1) was used. Three bleaching processes were carried out: classical (referential) consisting of separate scouring and bleaching stages, integrated that considers scouring and bleaching in a single bath and enzymatic where the enzyme activates the formation of peroxide and has a previous scouring phase. When evaluating absorption and capil...
19
tesis de grado
The present report of pre-professional practices was to determine the long-term stability of Cefabroncol duo coated tablet in a laboratory of the national pharmaceutical industry. The sample consisted of 3 different lots of 360 tablets each, a simple random sampling was carried out. We proceeded with the description test by visual inspection on a white background and natural light, likewise the uniformity of weight was determined, taking the individual weight of 20 tablets, calculating the average weight. For the dosing and dissolution of the active pharmaceutical ingredients (IFAs), both of Cephalexin and Ambroxol hydrochloride, we proceeded to treat standard and sample according to laboratory analysis technique. The results obtained were: description, coated tablet of oblong shape, with central groove on one side, lilac color. The uniformity of weight is maintained within the range 124...
20
tesis doctoral
Publicado 2022
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Photoelectrochemical (PEC) processes have become an efficient and viable method for solar energy conversion into zero-emission fuels by harnessing and storage the power of the sun, which offers an environment-friendly approach. Hydrogen is considered as a sustainable and suitable energy alternative in comparison to energy systems based on the consumption of conventional hydrocarbon fuels. In particular, hydrogen production by PEC water splitting represents an attractive alternative to enhance the efficiency of water splitting process using sun light. Current research in this field is devoted to the fabrication and evaluation of new photoactive materials that upon sunlight absorption enable water-splitting PEC reactions with high efficiency and durability. Silicon based compounds offer a good opportunity as photoactive material due to its high abundance and current scalable technologies. ...
