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1
artículo
Publicado 2021
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This study was supported by National Institute of Agricultural Innovation (INIA) grant 004-2016-INIA-PNIA-UPMSI/IE through the National Program for Agricultural Innovation of Peru (PNIA), by grant 10-2018-FONDECYT-BM-ADT-AV from National Foundation for Scientific, Technological Development and Technological Innovation (Fondecyt) of Peru, and by grant SNIP no. 352641?CEINCACAO.
2
tesis de maestría
Publicado 2017
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Resistivity measurements in thin film samples depending on the temperature and on the lm thickness is always a subject of interest, above all when it comes to new materials. This work presents the implementation of a measuring system for thin fi lm resistivity based on four probes showing the dependency of the resistivity on the temperature as well as on the film thickness. In order to change the temperature of the samples, a heat source based on a Peltier element was implemented into the measuring system. A Graphical User Interface using a LabVIEW software controls all the devices of the measuring system and allows the user to calculate the thin lm resistivity choosing between four measuring method: Van der Pauw, Modi ed Van der Pauw, Linear Van der Pauw and Linear Four Probes methods. Resistivity in aluminum and tungsten thin lm samples with 100, 300, and 600 nm thickness were measured...
3
artículo
Publicado 2023
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Background: This article contributes to the health workforce planning literature by exploring the dynamics of health professions in New Zealand’s Primary Care sector and deriving broad lessons for an international audience. Professions tend influence health policy and governance decisions and practices to retain their place, status and influence. Therefore, understanding their power dynamics and the positions that they have on workforce policies and issues assists workforce governance or health system reform plans. Methods: Using the infrequently reported health workforce policy tool, actor analysis, a reanalysis of previously collected data is undertaken using an actor-based framework for the study of professionalism. Two models were developed, (1) the framework’s original four-actor model and (2) a five-actor model for the comparison of the Medical and Nurse professions. Existing w...
4
artículo
Publicado 2016
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The connection between the new school and applied anthropology through classical American pragmatism is examined here, as well as its effects on the reflections on the Indian problem, the spread of the new school methods, and on proposals for rural education in Peru. New education or new school is a trend proposed to implement popular education and even university education, linking education to the community, its history and geography.The literature reviewed emphasizes the development of citizenship through education, especially in rural areas. It considers a text on the mutual influences between Boas and Dewey, twelve Peruvian authors on Indian education, a resume of seventeen newsletters of the Pan American Union on aspects of educational methods, between 1927 and 1931, as well as four publications of the Ministry of Education between 1938 and 1939, which formulate policies to ...
5
artículo
Publicado 2016
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The connection between the new school and applied anthropology through classical American pragmatism is examined here, as well as its effects on the reflections on the Indian problem, the spread of the new school methods, and on proposals for rural education in Peru. New education or new school is a trend proposed to implement popular education and even university education, linking education to the community, its history and geography.The literature reviewed emphasizes the development of citizenship through education, especially in rural areas. It considers a text on the mutual influences between Boas and Dewey, twelve Peruvian authors on Indian education, a resume of seventeen newsletters of the Pan American Union on aspects of educational methods, between 1927 and 1931, as well as four publications of the Ministry of Education between 1938 and 1939, which formulate policies to ...
6
artículo
Publicado 2016
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Se examina la conexión entre la escuela nueva y la antropología aplicada a través del pragmatismo clásico estadounidense, así como sus efectos en las reflexiones sobre el problema del indio, la difusión de métodos de la escuela nueva y las propuestas para la educación rural en el Perú. La nueva educación, o escuela nueva, es una tendencia que fue entendida como una propuesta para implementar la educación popular —e incluso la educación universitaria—, inculando la educación con la comunidad, su historia y geografía.La bibliografía revisada pone énfasis en el desarrollo de la ciudadanía a través de la educación, sobre todo en el ámbito rural. Considera un texto sobre las mutuas influencias entre Boas y Dewey, así como la reflexión sobre la educación del indio a través de doce autores peruanos. Asimismo, diecisiete boletines de la Unión Panamericana...
7
tesis de grado
Publicado 2020
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The single-diode model is used to characterize a photovoltaic (PV) solar cell using an equivalent circuit and an equation that depends on five electric parameters. Three analytical methods are applied to extract the five parameters from an Aluminium Back Surface Field (Al-BSF) PV module using 500 experimental current-voltage (I-V) curves measured in the 100-1000W/m2 range. Two of these methods are also applied to four thin-film PV modules, using four experimental I-V curves measured at an irradiance of 1000 W/m2 and air temperature 25℃. While parameter extraction methods have been studied before, this work offers a new perspective by applying the techniques to outdoor PV modules in Lima-Peru and, on the other hand, thin-film technologies located in Jaen-Spain. Results are presented by comparing the measured I-V curve with the ones modelled using the extracted parameters. The Normalized...
8
tesis de maestría
Publicado 2017
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Resistivity measurements in thin film samples depending on the temperature and on the lm thickness is always a subject of interest, above all when it comes to new materials. This work presents the implementation of a measuring system for thin fi lm resistivity based on four probes showing the dependency of the resistivity on the temperature as well as on the film thickness. In order to change the temperature of the samples, a heat source based on a Peltier element was implemented into the measuring system. A Graphical User Interface using a LabVIEW software controls all the devices of the measuring system and allows the user to calculate the thin lm resistivity choosing between four measuring method: Van der Pauw, Modi ed Van der Pauw, Linear Van der Pauw and Linear Four Probes methods. Resistivity in aluminum and tungsten thin lm samples with 100, 300, and 600 nm thickness were measured...
9
tesis de grado
Publicado 2010
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Para determinar las variaciones espacio-temporales de las comunidades de arañas, su diversidad y estructura, junto a las posibles implicancias de los factores climáticos en los Pantanos de Villa, Lima, Perú se ha realizado un muestreo entre diciembre 2004 y setiembre 2005. Este inventario se llevó a cabo en distintas asociaciones vegetales bajo metodologías de muestreos adecuados en un total de 6 hábitats. Las colectas se realizaron durante 6 días, coincidentes con los picos de cada una de las cuatro estaciones; para tal efecto se usaron trampas de caída, paraguas entomológico, red de batido y muestreo manual en áreas de 80 m2 por hábitat durante cuatro horas entre las 18:00h a 22:00h usándose el criterio de división de asociaciones vegetales de Cano (1998) para un muestreo metódico. Para evaluar la diversidad de arañas, se cuantificó el número de especies y la abundanci...
10
artículo
Publicado 2020
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Four new species, belonging to genus Trechisibus Motschoulsky, 1862 are described from southeastern Peru: T. silviae sp. nov., T. elisae sp. nov., T. jorgeluisi sp. nov. and T. bravoi sp. nov. Their affinities and differences respect to other, previously known, species of the genus from the surroundings of Lake Titicaca are discussed. The way to do this task goes through a review of the taxonomic utility of characters that show certain degree of variation, such as the features of the apical triangle or the chaetotaxy of the epistoma, as well as through searching for new discriminatory features.
11
artículo
Publicado 2024
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Solutions are needed to address both hunger and the promotion of healthy and sustainable diets. Quinoa, a nutritious and sustainable Andean grain, is a versatile option for creating new foods. Over the years, several technological advancements have been made to include quinoa in various food products. However, there is still a need for solid scientific evidence on the impact of quinoa on the product's acceptance. To address this scientific knowledge gap, this work aims to analyze the scientific literature over the last three decades regarding the sensory and hedonic impact of adding quinoa to food products. To do so, bibliometric methods based on the Scopus and Annual Scientific Production databases were used. After selecting and screening using the PRISMA method, seventy-four articles from 1991 to 2024 were analyzed, identifying relationships between keywords in the analyzed studies, fo...
12
artículo
Publicado 2020
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The Bessel expression is an ordinary diff erential equation of second order (EDOPO), whose solutions are spherical and can be solved by Frobenius' methods, indeterminate series, and coeffi cients; whose values can be used very well and easily in food engineering and technology. Their solutions are specifi ed in four parts, of which those of the type are those that have an application in the present study. The Bessel EDOPO was solved in its four possibilities, in which the values and behaviors are given in tables and graphs in detail. Th e corresponding values were used in the temperature distribution for cylindrical containers of known dimensions using the equations of heat transfer by conduction, preferably, coming from the Fourier theory, facilitating the improvement, modifi cation, and design of new processes. The results of the temperature distribution were calculated by the respecti...
13
artículo
Publicado 2020
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The Bessel expression is an ordinary diff erential equation of second order (EDOPO), whose solutions are spherical and can be solved by Frobenius' methods, indeterminate series, and coeffi cients; whose values can be used very well and easily in food engineering and technology. Their solutions are specifi ed in four parts, of which those of the type are those that have an application in the present study. The Bessel EDOPO was solved in its four possibilities, in which the values and behaviors are given in tables and graphs in detail. Th e corresponding values were used in the temperature distribution for cylindrical containers of known dimensions using the equations of heat transfer by conduction, preferably, coming from the Fourier theory, facilitating the improvement, modifi cation, and design of new processes. The results of the temperature distribution were calculated by the respecti...
14
artículo
Because of the ethical problems that have been taking for the use of embryos as a source of pluripotent cells , we have developed new sources for cells with the same characteristics. In this review we discuss some reprogramming methods that have been employed by many researchers around the world , starting with the nuclear transfer and later with the work of Yamanaka who began using the introduction of four transcription factors , Oct3 / 4 , Sox2 , Klf4 and c- Myc that originates successful reprogramming of somatic cells into induced pluripotent stem cells ( iPSC ) , which have genomic and phenotypic characteristics of embryonic stem cells , and discusses some drawbacks with these methods and the risks involve the use of the transcription factor c Myc . Although much room for improvement in this field, iPS cells show a tremendous potential for research and potential therapeutic applicati...
15
artículo
Publicado 2020
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Objective. This study aimed to project the data from Moyers tables through linear regression equations and present a new instrument that facilitates the analysis of Moyers in mixed dentition. methods. The classical tables of Moyers were used through four linear equations projected data for both values, men and women, the roulette was built from a new table with values projected from the 19 mm to 30,5 mm corresponding to the sum of the lower incisors. Linear regression and linear equations were used to project values for both, maxilla and mandible. Roulette model was devised following the Korkhaus Orthometer model and emulating the classic medical gestation tables. Results. Two tables were obtained with new data values from 19 mm to 30,5 mm measurement, measures which correspond to the sum of the mesiodistal width of the lower incisors. The new values include projections for both, the max...
16
objeto de conferencia
Publicado 2020
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El texto completo de este trabajo no está disponible en el Repositorio Académico UPN por restricciones de la casa editorial donde ha sido publicado.
17
artículo
Publicado 2021
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Trichodinids are the most common ectoparasites of both freshwater and marine fishes. Their generic identification is relatively easy, while the specific diagnosis is laborious due to the high intraspecific variability of some species. Four species of the genus Trichodina from the skin and fins of Oreochromis niloticus (Linnaeus, 1758) Egyptian black variety were identified by means of morphological methods and the use of digital correlation invariant to position, rotation and scale by species specific composite filters. Trichodina magna Van As Bassson, 1989 and Trichodina nigra Lom, 1961 represent new records of host and geographic location, while Trichodina centrostrigata Van As, Basson & Van As, 1998 and Trichodina heterodentata Duncan, 1977, have already been reported for O. niloticus in Mexico. The automatic identification of the four species studied was done through the developm...
18
artículo
Publicado 2011
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Se estudió la inmunogenicidad del veneno de la serpiente Bothrops atrox, “jergón”, utilizando los métodos inmunoenzimáticos de ELISA y Western Blot, así como los patrones de reactividad cruzada empleando los venenos de las serpientes Bothrops brazili, Lachesis muta y Crotalus durissus. Para este fin se inmunizaron conejos albinos Nueva Zelanda (2 kg aprox) con cuatro dosis de 500 μg del veneno de B. atrox en un periodo de 90 días. La producción de anticuerpos fue monitoreada mediante la técnica de ELISA, determinándose el título del suero hiperinmune obtenido al final del protocolo de inmunización. Adicionalmente se analizaron los patrones electroforéticos de los venenos en estudio mediante PAGE-SDS y su reactividad frente al suero obtenido mediante ELISA y Western Blot. El esquema de inmunización utilizado permitió una producción sostenida de anticuerpos a partir del...
19
artículo
Objective: To evaluate the role of total laparoscopic hysterectomy in the treatment of uterine pathology. Design: Descriptive and retrospective study. Material and Methods: Seventy two patients with indication of abdominal hysterectomy underwent total laparoscopic hysterectomy (TLH) employing the "RUMY manipulator and Koh Colpotomiser System" at the Gynecology Service of Edgardo Rebagliati Martins Hospital during 1998-2000. Laparoscopy was the method for total hysterectomy and electrosurgical energy was the only coagulation method. The surgical technique, postoperative evolution and complications were evaluated. Results: Seventy six interventions were scheduled, four suffered conversion to laparotomy due to severe adhesions. Mean age of patients was 46,1 years old, mean weight 63,7 kg, mean hospitalization 3,3 days. Mean surgical time was 144 minutes and mean uterine length 12,1 cm (rang...
20
artículo
Objective: To evaluate the role of total laparoscopic hysterectomy in the treatment of uterine pathology. Design: Descriptive and retrospective study. Material and Methods: Seventy two patients with indication of abdominal hysterectomy underwent total laparoscopic hysterectomy (TLH) employing the "RUMY manipulator and Koh Colpotomiser System" at the Gynecology Service of Edgardo Rebagliati Martins Hospital during 1998-2000. Laparoscopy was the method for total hysterectomy and electrosurgical energy was the only coagulation method. The surgical technique, postoperative evolution and complications were evaluated. Results: Seventy six interventions were scheduled, four suffered conversion to laparotomy due to severe adhesions. Mean age of patients was 46,1 years old, mean weight 63,7 kg, mean hospitalization 3,3 days. Mean surgical time was 144 minutes and mean uterine length 12,1 cm (rang...
