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https://purl.org/pe-repo/ocde/ford#2.01.01
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artículo
Consejo Nacional de Ciencia, Tecnología e Inovación Tecnológica (CONCYTEC, Peru) . Grant Number: 272-2015-FONDECY
2
artículo
Publicado 2021
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The COHESION (COmmunity HEalth System InnovatiON) Project was funded by the Swiss National Science Foundation and the Swiss Development Cooperation under the Swiss Program for Research on Global Issues for Development. M.L.-P. receives funding from the Swiss Excellence Government Scholarship (2018.0698). JJM acknowledges having received support from the Alliance for Health Policy and Systems Research (HQHSR1206660), the Bernard Lown Scholars in Cardiovascular Health Program at Harvard T.H. Chan School of Public Health (BLSCHP-1902), Bloomberg Philanthropies, FONDECYT via CIENCIACTIVA/CONCYTEC, British Council, British Embassy and the Newton-Paulet Fund (223-2018, 224-2018), DFID/MRC/Wellcome Global Health Trials (MR/M007405/1), Fogarty International Center (R21TW009982, D71TW010877), Grand Challenges Canada (0335-04), International Development Research Center Canada (IDRC 106887, 108167)...
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artículo
Publicado 2021
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Authors are very thankful to CONCYTECFONDECYT, process E041-01 (Contract number 123-2018-FONDECYT-BM-IADT/AV), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Process 305250/2019-1, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior-Brasil (CAPES) Finance Code 001 and Programa Nacional de Pós-Doutorado (PNPD).
4
artículo
Publicado 2022
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Introducción: La pandemia ocasionada por el Sars-cov-2 ha genero múltiples esfuerzos sostenidos para su identificación, características y movilidad de la enfermedad que hasta la fecha tiene repercusión a nivel mundial y ante esta necesidad es necesario contar con información de actualiza teniendo en cuento procesos claros de investigación. Método: revisión crítica del cuerpo actual de literatura sobre investigación en COVID-19. Conclusiones: Es imprescindible contar con procedimientos éticos en las diferentes fases de investigación que puedan ir más allá de los intereses personales y que garanticen la preservación del bienestar de las personas en la reducción de posibles daños en la salud de manera global, adecuados procedimientos en la recolección de información que no se encuentren construidos a la medida de los investigadores, para evitar u...
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artículo
Geopolymers are a class of inorganic synthetic materials that in recent years have received extensive interest of the scientific community, mainly due to the variety of applications in which they can be used. The synthesis of these materials is based on a chemical process called geopolymerization, which consists of the alkaline activation of amorphous alumina and silica oxides present in many natural raw materials and industrial solid waste. Therefore, the present work proposes the use of inorganic mining residues (mine tailings) from gold mining in the southern region of Peru, for the manufacture of geopolymeric concrete. The first part of the research focused on the physical, structural and microstructural characterization of the raw material (fine sand and mining tailings), then the volumetric matrix of mixtures for five types of geopolymer concrete was determined. Cylindrical samples...
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artículo
The purpose of this article is to compare alternatives for the reuse of organic solid waste generated by catering services, this research will be carried out by verifying studies no older than 5 years to date, denoting their progress in each method. to be used, by comparing the methods and results of each study, in order to define the best reuse alternative, taking into account the cost benefit, the advantages, disadvantages and the feasibility of each study. Therefore, in the present investigation, the result was to opt for the reuse of composting, because it is a process that generates great profits at little cost, in general 80% of organic waste is reused, on the other hand, we have the use through the generation of energy by obtaining biogas, being a slightly more complicated process due to the higher incidence in cost/benefit of this reuse alternative. Therefore, the article conclud...
7
tesis de grado
Publicado 2024
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La presente investigación tuvo como objetivo el diseño de un plan de mejora del proceso de recolección y transporte en la empresa operadora de residuos sólidos para reducir los costos operativos. En el diagnóstico se obtuvo que la empresa presentaba problemas relacionados con servicios retrasados en un 23,9%, materiales defectuosos en un 14,3%, servicios con paradas no programadas en un 15,0% y a la ineficacia en la clasificación en un 3,7%, lo que ocasionaba que un incremento en los costos operativos de 36,2%, es decir alrededor de S/ 53 825,67; para lo cual se propuso un plan de mejora basada en el Ciclo Deming, donde se diseñaron estrategias como capacitaciones, programa de mantenimiento preventivo, adición de un nuevo subproceso, estándar de recursos y evaluación de proveedores; lo que mejoró el porcentaje de servicios retrasados a un 7%, materiales defectuosos a un 8%, se...
8
artículo
Texture is an important visual property which has been largely employed for image characterization. Recently, Convolutional Networks has been the predominant approach on Computer Vision, and their application on texture analysis shows interesting results. However, their popularity steers around object recognition, and several convolutional architectures have been proposed and trained for this task. Therefore, this works evaluates 17 of the most diffused Deep Convolutional Neural Networks when employed for texture analysis as feature extractors. Image descriptors are obtained through Global Average Pooling over the output of the last convolutional layer of networks with random weights or learned from the ImageNet dataset. The analysis is performed under 6 texture datasets and using 3 different supervised classifiers (KNN, LDA, and SVM). Results using networks with random weights indicates...
9
artículo
Publicado 2016
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Tuberculosis (TB) control efforts are hampered by a mismatch in diagnostic technology. Lack of adequate early diagnostics and Multi-drug resistant (MDR) detection is a critical problem in control efforts. Alternate and novel diagnostic approaches are required, especially in low-resources settings where they are needed most. The Microscopic Observation Drug Susceptibility (MODS) assay is a cost-effective, highly sensitive, and specific method based on the detection of characteristic cording growth patterns of Mycobacterium tuberculosis (MTB), in microscopic examination of a liquid culture under an inverted microscope. By adding antimicrobials to the wells, MODS also determines antimicrobial susceptibility in both MDR and Extreme Drug Resistant (XDR) tuberculosis. The interpretation of a MODS culture performed in a 24 well plate, requires an extensive inspection over the entire surface to ...
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artículo
Fabrication and thermomechanical evaluation in controlled atmospheres of SiC/Si biomorphic compounds
Publicado 2020
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Biomorphic SiC/Si compounds were fabricated from copaiba wood (Copaifera officinalis, natural wood native to Peru), by reactive infiltration of molten silicon in a porous carbon preform obtained by a controlled pyrolysis process of wood. Structural and microstructural characterization tests by X-ray diffraction and scanning electron microscopy, respectively, revealed, on the one hand, the presence of crystalline phases of SiC, Si and C, and on the other, the typical morphology of this type of material, which it consists of a continuous SiC scaffold with elongated channels in the direction of tree growth and the presence of residual Si and C located mainly in the porosities of the material. The mechanical behavior in uniaxial compression was also studied at a constant compression rate of 0.05 mm/min and as a function of temperature (from ambient to 1400 ºC) and test atmosphere (ambient a...
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artículo
The present work was developed in the Department of Apurímac, Province of Abancay, in the Unitary Operations Labora-tory of the Professional Academic School of Agroindustrial Engineering. The main objective of the research was to determi-ne which mechanical elements influence the drying time. The problem in the dryers is the consumption of energy therefore the fans that drive the air are incorporated to reduce drying time and also increases the turbulence of the air but the expen-diture of the electric power in higher, the research was developed to optimize the drying time in a fluidized bed dryer, JAR-CON, Model SLFT-60-240X, the method used for the determination of humidity is AOAC (2005) and the design applied was the complete random block (22 * 3) to evaluate the variables of answers, manipulating two factors such as the fan and ex-tractor. The most important conclusions were, the s...
12
artículo
Publicado 2021
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The authors are grateful to the Sao Paulo Research Foundation (FAPESP, Brazil) for funding the project n? 2019/05043-6; this study was financed in part by the ?Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - Brazil (CAPES)? ? for the JS Guedes (88882.378356/2019-01) and KC Santos (88882.378385/2019-01) M.Sc. scholarships; to the National Council for Scientific and Technological Development (CNPq, Brazil) for the JS Guedes M.Sc. scholarship (131235/2020-6) and the productivity grant of PED Augusto (306557/2017-7); and to the Fondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológica (FONDECYT, Peru) from the ?Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica? (CONCYTEC, Peru) for funding the project n° 409-2019-FONDECYT.
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artículo
Publicado 2018
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The authors are grateful to the São Paulo Research Foundation (FAPESP, Brazil) for funding the projects n° 2016/18052-5, 2015/15507-9, and 2014/16998-3; to the National Council for Scientific and Technological Development (CNPq, Brazil) for funding the project n° 401004/2014-7, the productivity grant of P.E.D. Augusto (306557/2017-7) and the M.Sc. scholarship of SS Campoli; and to Cienciactiva for the M.L. Rojas Ph.D. scholarship (CONCYTEC, Peru; Contract 087-2016-FONDECYT), from the ‘‘Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica“.
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artículo
Publicado 2021
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This research was funded by FONDECYT-CONCYTEC (grant contract number 271-2015-FONDECYT ), the São Paulo Research Foundation (FAPESP, Brazil) for funding the project N° 2018/05871-3 and CNPq proc . Num. 305295/2018-7 .
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revisión
Publicado 2021
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The authors are grateful to the S?o Paulo Research foundation (FAPESP, Brazil) for funding the project n? 2019/05043-6 and the ME Caetano-Silva post-doctoral fellowship (2017/16977-4), the National Council for Scientific and Technological Development (CNPq, Brazil) for the PED Augusto productivity grant (306557/2017-7, 310839/2020-3), the Fondo Nacional de Desarrollo Cient?fico, Tecnol?gico y de Innovaci?n Tecnol?gica (FONDECYT, Peru) from the ?Consejo Nacional de Ciencia, Tecnolog?a e Innovaci?n Tecnol?gica? (CONCYTEC, Peru) for funding the project n? 409-2019-FONDECYT, and to the Universidad Privada del Norte (UPN, Peru) for funding the project n? 20201005.
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artículo
Publicado 2023
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Wetlands provide multiple ecosystem services that multiply the social, economic, and environmental development of the population; However, these problems undergo environmental problems that accelerate the eutrophication process. The purpose of this research was to evaluate the trophic states of Medio Mundo’s main lagoon of the Albufera Regional Conservation (ACRAMM). For this, the Carlson Trophic State Index modified by Toledo (IETM) was used and a predictive mathematical model for the total water phosphorus was formulated; where the dependent variable was represented by the parameter and the independent ones, by the reflections of Sentinel-2 images. The ACRAMM, according to the phosphorus model, was eutrophic on the first 5 dates evaluated (IETMPT> 65.56) and from oligotrophic to eutrophic with a tendency to increase from south to north on the last date (IETMPT = 38.29-56.99). Thes...
17
artículo
Publicado 2019
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This research was funded by FONDECYT-CONCYTEC (grant contract number 238-2015-FONDECYT). We want to acknowledge Dr Marco Lopez from INSERM U1008 for SEM analyses.
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tesis de maestría
Publicado 2019
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I would like to thank the National Council of Science, Technology and Technological Innovation (Concytec) from Peru for the award of a scholarship which made it possible to do this research work.
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artículo
Publicado 2020
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Different drying accelerators were studied to improve vegetable drying: acetone (AC), ethanol (ET), isopropanol (ISO) and acetic acid (AA). Pre-treatments were performed by immersion of pumpkin cylinders. Convective drying was performed at 40 degrees C and air velocity 1 m/s. Different aspects were evaluated: drying kinetics, structural changes (microstructure and macrostructure), thermal profile and viscoelastic and rehydration behaviours. The microstructure was modified by pre-treatments, being more pronounced with AC and AA. Thinner cell walls, changes on turgor and extraction of components and air were reported, affecting the mass transfer. Moreover, the microstructural changes reinforced anisotropy and also affected the macrostructure, changing the viscoelastic behaviour. All pre-treatments resulted in a super-diffusive behaviour, decreasing the drying time from 9% (ISO) to 22% (AC)...
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artículo
Publicado 2017
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The authors gratefully acknowledge the Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica (CONCyTEC-Perú, process number 219-2014) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq-Brazil, process number 449609/2014-6) for financial support.
