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1
artículo
Publicado 2012
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Daily consumption of probiotics reduce levels of serum cholesterol by up to 3%, which is significant to prevent hypercholesterolemia, a risk factor for cardiovascular disease and cause of mortality. The genus Lactobacillus is used in industry as a probiotic and some species reduce serum cholesterol by two mechanisms, the adsorption of cholesterol and the production of the enzyme bile salt hydrolase, which vary according to species. The aim of the study was to assess the ability of probiotic bacteria group isolated from coast serum. 53 strains were isolated from nine coastal serum sample; the sensitivity to cefoxitin and vancomycin, and the tolerance to pH 2.0 and 0.3% bile salts were evaluated to determine its probiotic potential. Five microorganisms were selected and molecularly identified as Lactobacillus fermentum. The ability to absorb cholesterol measured by the method of Kimoto, sh...
2
artículo
Publicado 2012
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Daily consumption of probiotics reduce levels of serum cholesterol by up to 3%, which is significant to prevent hypercholesterolemia, a risk factor for cardiovascular disease and cause of mortality. The genus Lactobacillus is used in industry as a probiotic and some species reduce serum cholesterol by two mechanisms, the adsorption of cholesterol and the production of the enzyme bile salt hydrolase, which vary according to species. The aim of the study was to assess the ability of probiotic bacteria group isolated from coast serum. 53 strains were isolated from nine coastal serum sample; the sensitivity to cefoxitin and vancomycin, and the tolerance to pH 2.0 and 0.3% bile salts were evaluated to determine its probiotic potential. Five microorganisms were selected and molecularly identified as Lactobacillus fermentum. The ability to absorb cholesterol measured by the method of Kimoto, sh...
3
tesis de grado
Publicado 2023
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Colectivo23, parte del grupo Intercorp, con pocos años en el mercado ha sabido adaptarse al ámbito digital y hoy en día, tiene un gran potencial de crecimiento no solo en Perú, sino en todo Latinoamérica. El foco de la estrategia que se desarrollará a continuación, se centra en la Escuela de Diseño e Innovación, cuya ventaja competitiva es clave para obtener un performance exitoso a lo largo del funnel de ventas y reducir el costo por adquisición a través de una estrategia que involucra medios pagados y no pagados a lo largo del funnel de ventas. Asimismo, se buscará expandir el desarrollo del negocio hacia los países que se están abriendo camino: México, Colombia y Ecuador.
4
artículo
Ethyl N-benzylpyridine-3-carboximidoate7 was prepared by reacting N-benzylnicotinamide and ethyl chloroformate, the other ethyl imidatehydrochloride, ethyl N-(2-phenylethyl) pyridine-3-carboximidoate8 , was prepared with the same method. Compound6 was obtained by synthesis of N-benzyl-N-(2-cyanoethyl) nicotinamide4 , the latter was used as a starting material to obtain N-(3-aminopropyl)-N-benzylnicotinamide5 by reduction with Ni-Raney in good yield. Cyclization reaction was obtained by p-toluenesulfonic acid of compound5 . Finally, compound (5,6-dihydro-2-(pyridin-3-yl)pyrimidin-1(4H)-yl)(2,4-dimethoxyphenyl) methanone9 was prepared by direct benzoylation of 1,4,5,6-tetrahydro-2-(pyridin-3-yl) pyrimidine.
5
artículo
Publicado 2022
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Objective: To evaluate the trend and the years of life potentially lost in deaths due to traffic accidents in the department of Tacna. Material and methods: Observational study based on secondary data from the National System of Deaths of the Ministry of Health. A descriptive analysis of the general characteristics of the total number of deaths during the 2017-2021 period was carried out. Years of life lost were also calculated using the formula provided by the Global Burden of Disease. Results: A total of 245 deaths were obtained in the study period, the mean age was 42.98 years with a standard deviation of 19.58. 78 % of the victims were male. More than 80 % were reported in the province of Tacna. In 2020 there was a clear reduction in the number of deaths from traffic accidents. The years potentially lost in the study period were 12 012 years in total, with a large loss in the a...
6
artículo
Publicado 2020
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The anthropogenic climate change is a major cause of biodiversity loss. In this context, there is a need for studies based on the future impacts of large-scale climate change to propose conservation strategies for endangered species such as Puya raimondii Harms, a species of bromeliad endemic to the Andes of Peru and Bolivia. In this article, we model the current and future potential distribution of P. raimondii in order to identify priority areas for the future conservation of this endemic species. Our results revealed that 1) the current potentially suitable areas are centered in the Andes of Peru and Bolivia with an extension of 154268.40 km², and 2) in future climate change scenarios for the 2070s, there is a loss of potential areas, with an average reduction of area to -34326.53 km² and -8193.22 km² for the two climate scenarios of Representative Concentration Pathways (RCP) 4.5 ...
7
artículo
Publicado 2020
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The anthropogenic climate change is a major cause of biodiversity loss. In this context, there is a need for studies based on the future impacts of large-scale climate change to propose conservation strategies for endangered species such as Puya raimondii Harms, a species of bromeliad endemic to the Andes of Peru and Bolivia. In this article, we model the current and future potential distribution of P. raimondii in order to identify priority areas for the future conservation of this endemic species. Our results revealed that 1) the current potentially suitable areas are centered in the Andes of Peru and Bolivia with an extension of 154268.40 km², and 2) in future climate change scenarios for the 2070s, there is a loss of potential areas, with an average reduction of area to -34326.53 km² and -8193.22 km² for the two climate scenarios of Representative Concentration Pathways (RCP) 4.5 ...
8
artículo
Publicado 2020
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The anthropogenic climate change is a major cause of biodiversity loss. In this context, there is a need for studies based on the future impacts of large-scale climate change to propose conservation strategies for endangered species such as Puya raimondii Harms, a species of bromeliad endemic to the Andes of Peru and Bolivia. In this article, we model the current and future potential distribution of P. raimondii in order to identify priority areas for the future conservation of this endemic species. Our results revealed that 1) the current potentially suitable areas are centered in the Andes of Peru and Bolivia with an extension of 154268.40 km², and 2) in future climate change scenarios for the 2070s, there is a loss of potential areas, with an average reduction of area to -34326.53 km² and -8193.22 km² for the two climate scenarios of Representative Concentration Pathways (RCP) 4.5 ...
9
artículo
Publicado 2020
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The anthropogenic climate change is a major cause of biodiversity loss. In this context, there is a need for studies based on the future impacts of large-scale climate change to propose conservation strategies for endangered species such as Puya raimondii Harms, a species of bromeliad endemic to the Andes of Peru and Bolivia. In this article, we model the current and future potential distribution of P. raimondii in order to identify priority areas for the future conservation of this endemic species. Our results revealed that 1) the current potentially suitable areas are centered in the Andes of Peru and Bolivia with an extension of 154268.40 km², and 2) in future climate change scenarios for the 2070s, there is a loss of potential areas, with an average reduction of area to -34326.53 km² and -8193.22 km² for the two climate scenarios of Representative Concentration Pathways (RCP) 4.5 ...
10
tesis de maestría
Publicado 2014
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Investiga sobre los procesos de una empresa proveedora de telecomunicaciones que decidió externalizar sus operaciones de almacenamiento y transporte a un tercero logístico para enfocar todo su esfuerzo en sus competencias centrales con el objetivo final de mejorar el competitividad de la empresa. Después de 3 años de la relación comercial de outsourcing, el costo total del servicio ha mostrado una reducción considerable y el nivel de servicio proporcionado por La logística de terceros ha sido muy satisfactorio. Sin embargo, el proveedor de telecomunicaciones considera que todavía hay oportunidades para seguir reduciendo el costo total del servicio. Por esta razón, la tesis se centra en el desarrollo de metodología para evaluar diferentes escenarios de estrategias de abastecimiento en términos de ahorro de costos, nivel del servicio, riesgos, entre otros para recomendar la mejo...
11
artículo
Publicado 2024
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The global population growth, the increase in protein demand and the reduction of agricultural land, the sustainable production of meat is a challenge for the next decades. Therefore, this research seeks to develop cricket (Acheta domesticus) flour as an alternative for human consumption by evaluating its protein capacity, making entomophagy the food of the future. The crickets were collected from January to April because of their abundance due to the constant rains, bred in captivity and slaughtered in their adult state for the production of flour. FAO points out that insects offer high quality proteins and nutrients, surpassing meat and fish in quality. The results indicated that cricket meal has a protein value of 67.66%, ash 4.73%, fiber 11.60%, fat 1.17% and carbohydrates 14.84%, in comparison with other protein sources of either animal or vegetable origin, shows a wide superiority....
12
tesis doctoral
Publicado 2015
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Descargue la tesis en el repositorio institucional de la Technische Universität Wien: http://hdl.handle.net/20.500.12708/2829
13
artículo
Publicado 2024
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The diagnostic medical practice using X-rays significantly contributes to the collective dose worldwide, where the inherent risk in each examination is proportional to the absorbed dose, which is related to deterministic and stochastic effects of ionizing radiation. Therefore, due to the necessity of optimizing each radiological procedure, this study aimed to reduce the absorbed dose in patients undergoing X-ray examinations by evaluating each parameter that modifies the spectral distribution. The Birch and Marshall method was employed to reconstruct and modify the X-ray spectra based on tube voltage, filtration, tube current, anode angle, and energy pass factor. By modifying these parameters, it was possible to reduce the absorbed dose in the patient’s skin by up to 38%. The proposed methodology is feasible for implementation in clinical centers, given the availability of copper filt...
14
tesis de grado
Publicado 2025
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El presente estudio aborda la problemática de la pérdida de clientes potenciales en una microempresa dedicada a la venta minorista de celulares en Chincha Alta. A partir de un diagnóstico realizado mediante observación directa y levantamiento de datos, se identificaron como principales causas: demoras en la entrega de información sobre stock y precios, dependencia del dueño para confirmar precios, y falta de atención al cliente debido a tareas simultáneas del personal. Con el objetivo de mitigar estos problemas, se diseñó una propuesta de mejora basada en la metodología DMAIC, complementada con la metodología 5S y la implementación de un sistema de inventario digital en la nube. Entre las acciones destacan: el desarrollo de una hoja digital compartida para consultar inventario en tiempo real, una política de actualización diaria de precios y la capacitación del personal e...
15
artículo
Publicado 2025
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Autochthonous probiotics derived from the host’s native microbiota can enhance gastrointestinal colonization, feed efficiency, disease resistance, and stress tolerance in aquaculture species. This study evaluated bacteria isolated from the intestine and gills of gamitana (Colossoma macropomum) based on key probiotic selection criteria, including tolerance to acidic conditions and bile salts, antagonistic activity against pathogens, antibiotic susceptibility, biofilm formation, and enzymatic activity. A total of 69 bacterial isolates were obtained using Man, Rogosa, and Sharpe (MRS) broth and Trypticase Soy Broth (TSB). Five isolates (7.2%) met all selection criteria and were molecularly identified as Lactobacillus brevis (IPIFAB2, IPIFAC1, BRALA1) and Lactococcus garvieae (G25, G23). L. brevis isolates showed moderate acid tolerance, with survival rates between 31 ± 2.04% and 36.4 ± ...
16
artículo
Publicado 2015
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The chemical fertilizer represents for 20 and 30 % of cost the production a crop, used correctly increase productivity and profitability, however, each year increase the among of fertilizer to apply, due to deficiency of soil adsorption and absorption by the plant. Beging maize the third most important crop in Peru, with a significant impact on economic and social activity in 2014, only 40% of the offered maize corresponded of the production nacional. 37 weeds were identified associated with crops of maize from agricultural fields Monsefú districts and Reque, Lambayeque Region, with 68% being dicotyledonous against monocots with 32%. Bacteria were isolated from the rhizosphere of weeds, getting 305 pure cultures of bacteria, 133 of which (43.7%) were identified as Azotobacter spp. Investigated the biochemical reaction in nitrate reduction, utilization of sucrose, glucose, maltose, manni...
17
artículo
Publicado 2015
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The chemical fertilizer represents for 20 and 30 % of cost the production a crop, used correctly increase productivity and profitability, however, each year increase the among of fertilizer to apply, due to deficiency of soil adsorption and absorption by the plant. Beging maize the third most important crop in Peru, with a significant impact on economic and social activity in 2014, only 40% of the offered maize corresponded of the production nacional. 37 weeds were identified associated with crops of maize from agricultural fields Monsefú districts and Reque, Lambayeque Region, with 68% being dicotyledonous against monocots with 32%. Bacteria were isolated from the rhizosphere of weeds, getting 305 pure cultures of bacteria, 133 of which (43.7%) were identified as Azotobacter spp. Investigated the biochemical reaction in nitrate reduction, utilization of sucrose, glucose, maltose, manni...
18
tesis de grado
Publicado 2025
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El presente trabajo de suficiencia tiene como objetivo, reducir los costos operativos de una empresa industrial papelera al implementar una Central Eólica la cual permitiría la reducción de los costos operativos al reducir costos de consumo de energía eléctrica de la red. Inicialmente se describe la situación problemática de los costos operativos de la industria papelera, principalmente en los costos de consumo de energía eléctrica, por ello se plantea el diseño de una central eólica la cual reducirá el consumo de energía de la red y permitirá incrementar la seguridad en la continuidad del suministro eléctrico a dicha empresa industrial. Para el desarrollo del trabajo de investigación, se partió por determinar el potencial de energía eólica de la zona de emplazamiento, luego de ello se procedió con la selección del modelo de aerogenerador que permita la mayor producc...
19
artículo
Publicado 2024
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This case study discusses a problem identified in the global literature: the difficulty of national states in translating their policy instruments for disaster risk reduction and climate change adaptation into effective actions at the local territorial level. We review two perspectives on the territory and modes of intervention: (i) those of government agencies within the Huascarán Biosphere Reserve in Áncash and (ii) those deployed by local organizations in the context of a disaster risk reduction project. The case study presents evidence on the potential of participatory approaches to generate information that can help identify strategies that align adaptation and risk reduction actions to local well-being objectives and productive systems. It is concluded that there is a need to develop collaborative learning spaces between state agencies and communities to improve the effectiveness...
20
objeto de conferencia
Publicado 2020
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RESUMEN La fitorremediación es una técnica que se basa en la capacidad de ciertas plantas para absorber, acumular, estabilizar o reducir diversos contaminantes del suelo, entre ellos algunos metales pesados. El objetivo del estudio fue evaluar la capacidad del geranio (Pelargonium zonale) para remover arsénico (As), cadmio (Cd) y cobre (Cu) de suelos contaminados. El cultivo del geranio fue realizado en condiciones ex situ, durante un periodo de seis semanas, en muestras de suelo obtenidas del botadero El Milagro de la ciudad de Trujillo (Perú). Las concentraciones de As, Cd y Cu en las muestras de suelo disminuyeron significativamente tras el periodo de prueba, mostrando una tolerancia hacia los metales, con una disminución del As y Cd de hasta 74% y 79%, respectivamente, con respecto a la concentración inicial, mientras que para Cu se logró una reducción de hasta 55%. Los resul...
