Search

Your search keyword '"Godoy, Karina"' showing total 48 results
Start Over Author "Godoy, Karina"
48 results on '"Godoy, Karina"'

9. Osteogenic and microstructural characterization in normal versus deformed jaws of rainbow trout (Oncorhynchus mykiss) from freshwater

Author

Godoy, Karina, primary, Sandoval, Cristian, additional, Vásquez, Claudio, additional, Manterola-Barroso, Carlos, additional, Toledo, Barbara, additional, Calfuleo, Joel, additional, Beltrán, Carolina, additional, Bustamante, Marion, additional, Valderrama, Sebastián, additional, Rojas, Mariana, additional, and Salazar, Luis A., additional

Published
2023
Full Text
View/download PDF

28. Effectiveness of mRNA, protein subunit vaccine and viral vectors vaccines against SARS-CoV-2 in people over 18 years old: a systematic review.

Author

Sandoval, Cristian, Guerrero, Daniela, Muñoz, Joham, Godoy, Karina, Souza-Mello, Vanessa, and Farías, Jorge

Subjects
GENETIC vectors, VIRAL vaccines, COVID-19 vaccines, VACCINE immunogenicity, VACCINE effectiveness
Abstract

Vaccines prevent disease and disability; save lives and represent a good assessment of health interventions. Several systematic reviews on the efficacy and effectiveness of COVID-19 vaccines have been published, but the immunogenicity and safety of these vaccines should also be addressed. This systemic investigation sought to explain the efficacy, immunogenicity, and safety of new vaccination technologies against SARS-CoV-2 in people over 18 years old. Original research studying the effectiveness on mRNA, protein subunit vaccines, and viral vector vaccines against SARS-CoV-2 in people over 18 years old was analyzed. Several databases (Web of Science, Scopus, MEDLINE and EMBASE) were searched between 2012 and November 2022 for English-language papers using text and MeSH terms related to SARS-CoV-2, mechanism, protein subunit vaccine, viral vector, and mRNA. The protocol was registered on PROSPERO, CRD42022341952. Study quality was assessed using the NICE methodology. We looked at a total of six original articles. All studies gathered and presented quantitative data. Our results suggest that new vaccinations could have more than 90% efficacy against SARS-CoV-2, regardless of the technology used. Furthermore, adverse reactions go from mild to moderate, and good immunogenicity can be observed for all vaccine types. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

29. Assessing Ecological Indicators for Remnant Vegetation Strips as Functional Biological Corridors in Chilean Vineyards

Author

Díaz-Forestier, Javiera, primary, Abades, Sebastián, additional, Pohl, Nélida, additional, Barbosa, Olga, additional, Godoy, Karina, additional, Svensson, Gabriella L., additional, Undurraga, María I., additional, Bravo, Camila, additional, García, Camila, additional, Root-Bernstein, Meredith, additional, Armesto, Juan J., additional, and Celis-Diez, Juan L., additional

Published
2021
Full Text
View/download PDF

33. Evaluación de la Mineralización en Mandíbula y Diente de Trucha Arcoíris (Oncorhynchus mykiss) Mediante Microscopía Electrónica de Barrido de Presión Variable Acoplada a Detector de Espectroscopía de Rayos X de Energía Dispersiva..

Author

Godoy, Karina, Sandoval, Cristian, Manterola-Barroso, Carlos, Salinas, Paulo, Salazar, Luis A., and Rojas, Mariana

Subjects
*ENERGY dispersive X-ray spectroscopy, *CHEMICAL elements, *SALMON farming, *SCANNING electron microscopy, *TRACE elements, *PHOSPHORUS in water
Abstract

In salmon farming systems, X-ray images are used to evaluate the spine and fins, but these do not allow quantifying the minerals that make up the bone, for different techniques that are destructive are used. Variable Pressure Scanning Electron Microscopy (VP SEM) coupled to an Energy Dispersive X-ray spectroscopy detector (EDX), allows us to analyze the microstructure and at the same time determine chemical elements, percentages, and distribution present at specific points in a sample. Five control and five jaw deformity trout, from freshwater and in the smolt stage were used. The structure and mineralization of the bone were analyzed, an average six quantification points were chosen per region of interest (ROI) and then they were analyzed by Scanning Electron Microscopy (VP SEM-EDX). The data obtained have shown the average mass percentage of calcium in trout joint bone was 8.07 % and 14.48 % in jaw deformity and control trout, respectively; and the average mass percentage of phosphorus is 4.07 % and 7.60 %, in jaw deformity and control trout, respectively. Other elements present in the sample were also identified, such as magnesium, sodium, carbon, oxygen, nitrogen, sulphur, fluorine, zinc, aluminium, and iron, with special interest the increase of carbon in the analyzed samples with mandibular deformity and the presence of aluminum in all samples. The VP SEM-EDX Technique allows direct evaluation, without destruction of the sample and with minimal sample preparation. In bone, the most frequent application of SEM-EDX is the measurement of the content of calcium (Ca) and phosphorus (P) and the relationship that exists between these elements, calcium/phosphorus (Ca/P), in the sample. At the same time, the technique allows us to detect other microelements from water or food that can eventually cause alterations in fish, confirming the hypothesis that elemental microanalysis is useful for salmon farming [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

38. Remnants of native forests support carnivore diversity in the vineyard landscapes of central Chile.

Author

García, Camila B., Svensson, Gabriella L., Bravo, Camila, Undurraga, María I., Díaz-Forestier, Javiera, Godoy, Karina, Neaman, Alexander, Barbosa, Olga, Abades, Sebastián, and Celis-Diez, Juan L.

Subjects
REMNANT vegetation, CARNIVOROUS animals, POPULATION density, TOP predators, DOGS, FOREST biodiversity
Abstract

Carnivores play an important role in ecosystem functioning as apex predators. However, most carnivore species are threatened or have been extirpated in human-dominated landscapes. The Mediterranean region of central Chile is a biodiversity hotspot, but expansion of agricultural areas such as vineyards is degrading wildlife habitat. We estimated the species richness and composition of carnivore communities in remnant fragments of sclerophyllous forest-shrubland in the vineyard landscapes of central Chile to evaluate the effects of human disturbance at different spatial scales. We tested two hypotheses: (1) vineyard landscapes with higher levels of human disturbance support a lower diversity of native carnivores in fragments of remnant native vegetation compared to landscapes with larger areas of natural habitat, and (2) habitat specialists and generalists respond differentially to human influence at the habitat vs landscape spatial scale. We used camera traps at 12 sites across the study area and evaluated the impact of human disturbance indicators on the richness and detection frequency of carnivore species. We found that human population density negatively affected carnivore richness and was associated with a lower detection frequency of the Vulnerable guiña Leopardus guigna. The presence of domestic dogs also had a negative effect on the detection frequency of the guiña and the two native species of foxes, the culpeo Lycalopex culpaeus and South American grey fox Lycalopex griseus. We conclude that protecting remnants of native forest in vineyard landscapes is crucial for carnivore conservation in central Chile. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

41. Factores de riesgo psicosocial y estrés percibido en trabajadores de una empresa eléctrica en Chile

Author

Güilgüiruca Retamal, Marjory, Meza Godoy, Karina, Góngora Cabrera, Rodolfo, and Moya Cañas, Cristóbal

Subjects
job, perceived stress, Psychosocial risk factors at the work, estrés percibido, trabajo, Factores de riesgo psicosocial
Abstract

Objetivos: El objetivo de esta investigación fue determinar la correlación entre riesgos psicosociales laborales y estrés percibido en trabajadores de una empresa del rubro eléctrico en Chile Material y Métodos: Se diseñó un estudio descriptivo, de alcance asociativo y de corte transversal, en el cual participaron 292 trabajadores. Se aplicó el instrumento SUSESO ISTAS-21, versión corta de la Superintendencia de Seguridad Social (SUSESO) del Gobierno de Chile y la Escala de Estrés Percibido validada para población chilena. El análisis estadístico se realizó con el programa SPSS versión 17.0. Resultados: Los resultados indican que todos los factores de riesgos psicosociales estudiados presentan asociaciones estadísticamente significativas con estrés percibido. Destacan las relaciones de apoyo social y exigencias psicológicas con estrés percibido, así como la relación entre género y doble presencia, antigüedad laboral y trabajo activo, sistema de turno y compensaciones. Conclusiones: Los trabajadores evaluados manifiestan que en la medida que aumenta la percepción de riesgo de los factores psicosociales del trabajo, también aumentan sus niveles de estrés percibido con aspectos del contenido y organización del trabajo. Objectives: The purpose of this investigation was to determine the correlation between the psychosocials risks of work and perceived stress in workers of an electric energy company in Chile. Methods: The study was descriptive, associative and transverse, in which 292 workers participated. The short version of the Government of Chile Questionnaire SUSESO ISTAS-21 (Superintendencia de Seguridad Social) was used. The perceived stress scale was validated for the Chilean population. To Statistical analysis was used the SPSS 17.0. Results: The results indicate that all psychosocial risk factors of the job are associated with perceived stress in the form of significant statistics. The associations more important are between social support and psychological demands with perceived stress, between gender and double presence, years with the company and active job, shift schedules and compensations. Conclusions: The workers evaluated show the perceived stress increase, when the psychosocials risks of work also increase. Therefore, the perceived stress increase when these workers perceive problems with contents and organization of job.

Published
2015

42. Shared and unique features of bacterial communities in native forest and vineyard phyllosphere.

Author

Toshiko Miura, Sánchez, Roland, Castañeda, Luis E., Godoy, Karina, and Barbosa, Olga

Subjects
BACTERIAL communities, COMMUNITY forests, VINEYARDS, PLANT performance, VITIS vinifera, GRAPES
Abstract

Phyllosphere bacteria have received little attention despite their important roles in shaping plant performance traits. In this study, we characterize the bacterial communities on leaves of native trees inhabiting sclerophyllous forests in central Chile, one of the world's biodiversity hotspots. Additionally, we provide profiles of bacterial communities on grape leaves and berries of organic and conventional vineyards. Results of 16S rRNA gene amplicon sequence analysis showed that 45% of OTUs were shared across forest leaves, grape leaves, and grape berries. Conventional management had higher number of OTUs shared with forest leaves than organic management. In addition, grape leaves subjected to conventional management had higher alpha diversity than those with organic management, while no significant effect of agricultural management was observed in grape berries. Indicator analysis showed that Bdellovibrio, Beijerinckia, and Spirosoma were typical for forest leaves, whereas Enhydrobacter, Delftia, Proteiniclasticum, Arsenicicoccus, and Alkaliphilus were typical for the vineyard phyllosphere. Regarding agricultural managements, Beijerinckia, Sedimentibacter, Nesterenkonia, Gluconobacter, Conexibacter, and Anaeromyxobacter were typical for conventional grape leaves, whereas no genus‐level indicator was found for organic vineyard leaves. These results provide new insights of the diversity patterns of the phyllosphere microbiome in native and cultivated lands and suggest that both of these microbiomes are connected and integrated systems. [ABSTRACT FROM AUTHOR]

Published
2019
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results