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https://purl.org/pe-repo/ocde/ford#3.02.06
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ODS 3: Salud y bienestar. Garantizar una vida sana y promover el bienestar de todos a todas las edades
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https://purl.org/pe-repo/ocde/ford#1.03.00
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Perú
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http://purl.org/pe-repo/ocde/ford#3.02.06
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https://purl.org/pe-repo/ocde/ford#2.02.04
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https://purl.org/pe-repo/ocde/ford#2.11.04
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1
artículo
Publicado 2005
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Using photocurrent spectroscopy, we report measurements of the photo responde below the optical gap in hydrogenated amorphous silicon (a-Si:H). The a-Si:H films were grown in a non conventional DC plasma assited discharge chamber. The measurements suggest that the density of states of this material is not very different than conventional intrinsic a-Si:H (device-quality) and not so extended as usually taken. The positions of the corresponding photovoltaic transition energies are determined and agree very well with known data obtained by other methods.
2
tesis de grado
Publicado 2021
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Background: Text messaging (SMS) interventions to improve HIV retention in care have shown mixed results, probably due to the diversity of features of their design and implementation. Methods: Using routinely collected data of the largest HIV program in Lima, we retrospectively evaluated the efficacy of an adapted single-arm, one-way SMS pilot intervention, intended to improve compliance with medical and ART pick-up appointments, by use of (i) SMS reminders before scheduled visits, (ii) a motivational SMS after scheduled visit, and (iii) phone calls after missed visits delivered for up to 9 months. The SMS group included people living with HIV (PLWH) ages 18-29 starting or restarting antiretroviral therapy (ART). For the control group, we non-randomly selected PLWH up to 35 years-old who were enrolled in the same HIV program within overlapping or closest dates to those of the SMS group (...
3
tesis de grado
La presente tesina consiste en el diseño de migración de nodos B aplicado para una RNC caída de una red móvil, con la finalidad de solucionar los problemas que se presenten ante un incidente que afecte los servicios de voz y datos de los usurarios de una red móvil. En el desarrollo de la tesina, se describe el planteamiento del problema, el marco teórico de la tecnología UMTS y posteriormente nos centramos en los elementos principales de esta tecnología. También describimos los equipos importantes a utilizar en desarrollo del proyecto, en este caso nos enfocamos en la descripción de la RNC. Y finalmente describimos el desarrollo del proyecto, el diseño de la solución e implementación de la misma, y en donde se presentan los resultados del diseño. This thesis is the design of migration of nodes B and its a applied when RNC fall for a mobile network, in order to solve the pro...
4
documento de trabajo
Ever since the inception of brand values, these have become a benchmark for many data-driven strategies, eventually providing a basis for vertical/horizontal integrations, as well. In recent decades, brands have become comparable across the industries, based on their value derived either from the customer perception or in terms of the firm financials. Numerous models have been developed in time to measure the customer-based brand equity; nevertheless, they all evaluate brand equity in an absolute sense. The present research paper provides an avenue to measure the customer-based brand equity in a relative sense using a satisficing DEA model. The information for this model has been collected through a customer-based survey questionnaire in line with predefined brand equity dimensions, which have been verified through a confirmatory factor analysis. We demonstrate the approach by means of a...
5
tesis de grado
Publicado 2023
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El despliegue de redes móviles 5G basados en el estándar Non-Standalone (NSA) utilizando el Multiple-Input Multiple-Output Massive (MIMO), se ha convertido en una veloz competencia a nivel mundial y a la misma ves una necesidad, países de primer mundo como Estados Unidos y China han sido los pioneros en desarrollar esta tecnología. A nivel de la región diversos países como Chile, Brasil, Uruguay, Colombia y Argentina se encuentran adaptando sus redes tradicionales a la nueva era tecnológica de 5G. El Perú no ha sido ajeno a ello, a inicios del año 2021 el Ministerio de Transporte y Comunicaciones (MTC) autorizó el uso de espectro electromagnético a dos operadores móviles del estado peruano para que a través de ello puedan brindar servicios 5G. El tráfico de datos móviles ha aumentado a un ritmo exponencial, así como como el número de usuarios de teléfonos inteligentes, ...
6
artículo
Publicado 2020
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The Andean tree genus Polylepis (Rosaceae) has recently been recognized to include polyploid species, but their occurrence within the genus is still incompletely known, especially in light of a forthcoming taxonomic treatment based on a narrow species concept including morphological, climatic and biogeographic distinctness that recognizes 45 species. We obtained guard cell measurements as proxies of ploidy level from 114 individuals of 33 species of Polylepis, including all species for which no previous measurements were available. In combination with previously published data, also on nucleus mass and chromosome counts, we infer that on current knowledge 19 (42%) species are probably purely diploid, 15 (33%) purely tetraploid, and one (2%) purely octoploid. The remaining eight (18%) species have mixed ploidy levels, with three (7%) being di- and tetraploid, two (4%) di- and hexaploid, a...
7
artículo
Publicado 2020
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Objective: The aim of this study was to determine the association between Red Blood cell Distribution width and Proliferative Diabetic Retinopathy in patients with type 2 diabetes. Methods: We conducted a hospital-based case-control study. Adult patients (≥ 18 years old) with the diagnosis of Diabetic Retinopathy who underwent medical check-ups at the ophthalmology department where enrolled in our study. We selected a total sample size of 262 patients, of which 131 cases had Proliferative Diabetic Retinopathy and 131 controls had Non Proliferative Diabetic Retinopathy. Data about age, gender, body mass index, history of hypertension, diabetic nephropathy, Congestive heart failure, Hemoglobin and HbA1c were registered for individuals who met inclusion criteria. Odds ratio model was used to test the relationship between Red Blood Cell Distribution Width and Proliferative Diabetic Re...
8
artículo
Publicado 2023
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ChatGPT adds to the list of artificial intelligence-based systems designed to perform specific tasks and answer questions by interacting with users (Apple's Siri, Amazon's Alexa, Google's Assistant and Bard, Microsoft's Cortana, IBM's Watson, Bixby from Samsung, among others). ChatGPT works using OpenAI's GPT (Generative Pretrained Transformer) language model and is capable of learning from users' preferences and behavior patterns to customize its response. ChatGPT has the potential to be applied in different fields, including education, journalism, scientific writing, communication, cell biology, and biotechnology, where there is already evidence. The aim of this work was to analyze the possible applications of ChatGPT in the agricultural and livestock industry. First, a scientometric analysis was performed with VosViewer and Bibliometrix (Bliblioshiny). 3 clusters were identified: (a) ...
9
artículo
Publicado 2025
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Esta investigación expone la concepción y puesta en marcha de una célula de manufactura con la finalidad de abordar el problema de la baja eficiencia y tiempos inactivos del sistema de elaboración de alimento extruido para fauna acuática de una industria acuícola de Lima, Perú. Se llevó a cabo un minucioso análisis para caracterizar la línea base y diagnosticar la situación actual, a partir de lo cual se propuso la configuración de una célula serpentina con nueve estaciones de trabajo. El estudio de tipo aplicado y nivel explicativo evaluó si la implementación de la célula reduciría los tiempos inactivos del sistema de producción de alimento extruido. Los resultados obtenidos confirmaron la hipótesis y mostraron una mejora significativa en el desempeño del sistema de producción de alimento extruido para fauna acuática en una empresa acuícola en Lima, Perú.
10
artículo
Publicado 2015
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This article shows the importance of advances in medical science whose success has solved the problem of infertility using the Assisted Human Reproduction Techniques; but also, shows the problems arising as a result of inadequate regulation or biased decisions of the courts that tend to support their position on constitutional principles such as the right to procreation favoring users, protection of personal data contributors (donors), understanding mistakenly give quality and consistent biological child legal relationship to those born with genetic contribution from third parties, protects their fundamental rights; situation which we believe prevents access to know their origins, their inherited genetic truth is basis for its existence and therefore of vital importance in his life and ensuring the proper development of personality, as an inherent element of the right.In these circumstan...
11
artículo
Publicado 2023
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Introduction: The study of predictors of negative outcomes in patients with heart failure has included the combination of natriuretic peptides and red cell distribution width (RDW). Objective: To evaluate the combined use of the amino-terminal pro-brain natriuretic peptide (NT-proBNP) and RDW as a prognostic factor for death from any cause, prolonged hospitalization, and readmission one year after discharge in patients with decompensated acute heart failure (AHF). Methods: We conducted a retrospective observational study. We constructed a combined index = NT-ProBNP x RDW/100. ROC curves were constructed, sensitivity and specificity were estimated based on the cut-off points, and the relative risk was estimated to develop the outcomes studied. We compared the area under curve of combined index versus NT-proBNP and RDW, separately. Results: We analyzed data from 471 patients. The combined ...
12
artículo
Publicado 2020
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The objective of the present study is to select appropriate wall materials for houses in high Andean regions based on the measurements of the thermal behavior of construction materials using a "Test Cell" under real environmental conditions. It will be the first "Test Cell" to be installed in Peru, in Imata-Arequipa, at 4500 masl. The design and thermal analysis of the "Test Cell" are presented using dynamic simulations with the EnergyPlus program. Initially, the thermal performance of adobe, a traditional construction material in rural regions of Peru, is simulated using real meteorological data recorded in Imata between August 18 and 24, 2018, a period with low temperatures (-12.6 °C). © Published under licence by IOP Publishing Ltd.
13
artículo
Publicado 2020
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Objective: The aim of this study was to determine the association between Red Blood cell Distribution width and Proliferative Diabetic Retinopathy in patients with type 2 diabetes. Methods: We conducted a hospital-based case-control study. Adult patients (≥ 18 years old) with the diagnosis of Diabetic Retinopathy who underwent medical check-ups at the ophthalmology department where enrolled in our study. We selected a total sample size of 262 patients, of which 131 cases had Proliferative Diabetic Retinopathy and 131 controls had Non Proliferative Diabetic Retinopathy. Data about age, gender, body mass index, history of hypertension, diabetic nephropathy, Congestive heart failure, Hemoglobin and HbA1c were registered for individuals who met inclusion criteria. Odds ratio model was used to test the relationship between Red Blood Cell Distribution Width and Proliferative Diabetic Re...
14
artículo
Publicado 2025
Enlace
Enlace
Autoimmune hemolytic anemia (AIHA) is a rare disease that complicates pre-transfusion tests due to the presence of autoantibodies interfering with conventional serological techniques. This increases the risk of alloimmunization and hinders the selection of compatible units, particularly in multi-transfused patients. This article reviews the use of molecular techniques, such as red blood cell genotyping, to improve transfusion safety in AIHA patients. Data sources such as PubMed, Cochrane, Medline, and Scielo were reviewed to identify relevant studies published between 2013 and 2024. Molecular techniques provide faster and more precise typing, overcoming serological interferences, but face challenges like high costs and limited infrastructure in countries like Peru. The centralization of molecular immunohematology laboratories is proposed as a cost effective solution to ensure equitable a...
15
artículo
Publicado 2020
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Toll-like receptors (TLRs) are transmembrane proteins that are key regulators of innate and adaptive immune responses, particularly TLR4, and they have been identified as potential drug targets for the treatment of disease. Several low-molecular-weight compounds are being considered as new drug targets for various applications, including as immune modulators. Mygalin, a 417 Da synthetic bis-acylpolyamine, is an analog of spermidine that has microbicidal activity. In this study, we investigated the effect of mygalin on the innate immune response based on a virtual screening (VS) and molecular docking analysis. Bone marrow-derived macrophages and the cell lines J774A.1 and RAW 264.7 stimulated with lipopolysaccharide (LPS) were used to confirm the data obtained in silico. Virtual screening and molecular docking suggested that mygalin binds to TLR4 via the protein myeloid differentiation fa...
16
artículo
Revisiting Previously Investigated Plants: A Molecular Networking-Based Study of Geissospermum laeve
Publicado 2017
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This work has been developed with the funding from Cienciactiva, an initiative of the National Council for Science, Technology and Technological Innovation (CONCYTEC) contract 239-2015-FONDECYT. In addition, this work was also supported by the French ANR grant ANR-15-CE29-0001. We express our thanks to Dr. J. Bignon (ICSN) for performing the cytotoxic assays. We also thank K. Leblanc (BioCIS) for her assistance in the preparative HPLC purifications. We are grateful to Dr. M. Wang, Prof. P. Dorrestein, and Prof. N. Bandeira (University of California, San Diego) for developing and making public the GNPS platform.
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artículo
Publicado 2017
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Analysis of immune responses in Bartonella bacilliformis carriers are needed to understand acquisition of immunity to Carrion’s disease and may allow identifying biomarkers associated with bacterial infection and disease phases. Serum samples from 144 healthy subjects from 5 villages in the North of Peru collected in 2014 were analyzed. Four villages had a Carrion’s disease outbreak in 2013, and the other is a traditionally endemic area. Thirty cytokines, chemokines and growth factors were determined in sera by fluorescent bead-based quantitative suspension array technology, and analyzed in relation to available data on bacteremia quantified by RT-PCR, and IgM and IgG levels measured by ELISA against B. bacilliformis lysates. The presence of bacteremia was associated with low concentrations of HGF (p = 0.005), IL-15 (p = 0.002), IL-6 (p = 0.05), IP-10 (p = 0.008), MIG (p = 0.03) and ...
18
artículo
Publicado 2021
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Chondrus canaliculatus is a red seaweed endemic to Peru and Chile. The name currently represents the only species classified in Chondrus from the southern hemisphere. Based on previous phylogenetic analyses, C. canaliculatus is polyphyletic with respect to Chondrus and possesses unique morpho-anatomical features that distinguish it from other genera in the Gigartinaceae. In this study, expanded phylogenetic analyses using rbcL and COI sequences, a combined data set, and morphological details were further examined to address the taxonomy and evolutionary systematics of C. canaliculatus. Genetic analyses placed C. canaliculatus well within the genus Mazzaella and therefore Mazzaella canaliculata comb. nov. is proposed. Mazzaella canaliculata is distinguished from the other Mazzaella from the southern hemisphere by its dichotomous branching, secondary filaments that persist and leave a well...
19
artículo
Publicado 2016
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This work was supported by the German funding program “LOEWE − Landes-Offensive zur Entwicklung Wissenschaftlich-ökonomischer Exzellenz” of the Hesse’s Ministry of Higher Education, Research and the Arts, and by JSPS KAKENHI (No. 26291077). P.R. also received a PhD scholarship from CONCYTEC - Peru. We would like to thank Benôit Dayrat, Antonio de Frias Martins, Adrienne Jochum and Alexander Weigand for providing samples or suggestions for this work, and to Claudia Nesselhauf for her support in the laboratory. We also thank the editor and reviewers for their comments on the manuscript. This is Contribution #234, Bermuda Biodiversity Project (BBP), Bermuda Aquarium, Natural History Museum and Zoo, Department of Conservation Services.
20
artículo
Publicado 2005
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En este trabajo reportamos mediciones de la respuesta óptica de silicio amorfo (a-Si:H), bajo el umbral del Gap óptico, empleando el método de espectroscopia de fotocorriente, Las películas de a-Si:H fueron elaborados por medio de un sistema plasmático DC no convencional. Las medidas sugieren que la densidad de estados de este material no es muy diferente del silicio amorfo convencional. Se determinan las posiciones de las correspondientes transiciones electrónicas fotovoltaicas, existiendo una buena correspondencia con niveles internos conocidos del material.
