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Mostrando ítems 2435-2454 de 2523
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Uptake and persistence of bacterial magnetite magnetosomes in a mammalian cell line: Implications for medical and biotechnological applications
(PUBLIC LIBRARY SCIENCE, 2019)Magnetotactic bacteria biomineralize intracellular magnetic nanocrystals surrounded by a lipid bilayer called magnetosomes. Due to their unique characteristics, magnetite magnetosomes are promising tools in Biomedicine. ... -
Urban ecosystem Services in Latin America: mismatch between global concepts and regional realities?
(SPRINGER, 2019)Latin America and the Caribbean (LAC) is one of the most urbanized and biologically diverse regions in the world but is often characterized by weak environmental governance and socioeconomic inequalities. Given large ... -
Urban metagenomics uncover antibiotic resistance reservoirs in coastal beach and sewage waters
(BMC, 2019)BackgroundMicrobial communities present in environmental waters constitute a reservoir for antibiotic-resistant pathogens that impact human health. For this reason, a diverse variety of water environments are being analyzed ... -
Urban wildlife in times of COVID-19: What can we infer from novel carnivore records in urban areas?
(Elsevier, 2021-04)The onset of the COVID-19 pandemic brought an unusual decrease in human activity associated with partial and total lockdowns. Simultaneously, a series of wildlife sightings—mainly in urban areas—have been brought to public ... -
Use of Bone Grafts or Modified Bilateral Sagittal Split Osteotomy Technique in Large Mandibular Advancements Reduces the Risk of Persisting Mandibular Inferior Border Defects
(W B SAUNDERS CO-ELSEVIER INC, 2018)Purpose: Healing of the inferior border of the mandible can be compromised in large advancements, leaving an unesthetic defect at the inferior border. The objective of this study was to compare different bilateral sagittal ... -
Use of Fura 2 Fluorescent Dyes as Indicator for Studying Calcium Distribution in Several Plant Tissues
(CIENCIAS, 2010)Calcium (Ca) is an essential plant nutrient and is important in determining quality of fruits in storage. The analytical method presently known to determine Ca concentration in vegetables measures total Ca, and there is a ... -
Using classical Cepheids to study the far side of the Milky Way disk: I. Spectroscopic classification and the metallicity gradient
(Chile. Universidad Mayor, 2020)Context. Much of what we know about the Milky Way disk is based on studies of the solar vicinity. The structure, kinematics, and chemical composition of the far side of the Galactic disk, beyond the bulge, are still to be ... -
Using Ecological Modelling to Assess the Long-Term Survival of the West-Indian Manatee (Trichechus manatus) in the Panama Canal
(Chile. Universidad Mayor, 2020)There is evidence of a thriving population of West-Indian manatee (Trichechus manatus) in the Panama Canal, although it is not clear if they are descendants of a small group of introduced manatees or if manatees have entered ... -
Using Femtosecond Laser Irradiation To Grow the Belly of Gold Nanorods
(AMER CHEMICAL SOC, 2018)Irradiation of gold nanorods can lead to the formation of several new nanostructures. One of the most interesting among them are phi-shaped rods, a stable intermediate shape in the rod-to-sphere conversion process, but not ... -
Using remote sensing to detect whale strandings in remote areas: The case of sei whales mass mortality in Chilean Patagonia
(Chile. Universidad Mayor, 2019)We test the ability of Very High Resolution satellite (VHR) imagery to detect stranded whales using both manual and automated methods. We use the 2015 mass mortality event in the Gulf of Penas locality, central Patagonia, ... -
Uso de herramientas de la Web 2.0 en la metodología aula invertida: una opción para clases a distancia en tiempos de COVID-19
(SOC MEDICA SANTIAGO, 2021-07)Background: The flipped classroom is an active method where information in delivered before class and the time allocated for it is dedicated to achieving more complex learning objectives. Diverse resources are used in each ... -
Uso de Herramientas de Teledetección Para el Análisis de la Severidad y Estimación de Gases de Efecto Invernadero (GEI) en Incendios Forestales de Gran Magnitud. Estudio de Caso Incendio La Rufina, VI Región del L.G.B. O'Higgins, Chile.
(Facultad de Ciencias, 2017)En Chile, los incendios forestales afectan miles de hectáreas de vegetación cada año, fenómeno que se ha incrementado sostenidamente en el tiempo, tanto en cantidad de incendios como en superficie afectada. Entre los años ... -
Uso del Lexema δερµα (derma) en Terminologia Embryologica
(SOC CHILENA ANATOMIA, 2021-01)Al lexema δερµα (derma) que proviene de las raíces griegas δέρ-μα/ματος se lo define como piel, pellejo, cuero, odre (Cortez, 2011). Lo encontramos en los términos ectodermo, mesodermo y endodermo, utilizados para describir ... -
Utilization of industrial by-product fungal biomass from Aspergillus niger and Fusarium culmorum to obtain biosorbents for removal of pesticide and metal ions from aqueous solutions
(Chile. Universidad Mayor, 2020)In this work, Aspergillus niger and Fusarium culmorum cell wall by-products were chosen as microbial sources for chitin and chitosan production. Both polysaccharides were characterized by FTIR and C-13-CPMAS NMR, but GPC ... -
UV-B Radiation as a Factor that Deserves Further Research in Bolivian Viticulture: A Review
(SOUTH AFRICAN SOC ENOLOGY & VITICULTURE-SASEV, 2021-12)Bolivian viticulture has acquired an incipient notoriety in the international wine market due to the production of high-altitude wines with a high antioxidant potential. Andes agricultural regions present an advantage for ... -
UV-VIS spectroelectrochemical in situ study during the electrosynthesis of copolymers
(SOC CHILENA QUIMICA, 2019)In this work, the synthesis of poly(aniline-co-o-methoxyaniline) is performed using purely electrochemical techniques, coupled to UV-vis spectroscopy in situ, in 3D. The electrocopolymerization is carried out on ITO ... -
Úlceras de pie: percepción de pacientes con diabetes mellitus tipo 2
(Facultad de Ciencias, 2018)Introducción. En la última década, la diabetes miellitus ha presentado un aumento exorbitante en el mundo y la úlcera del pie se constituye como la complicación más seria y costosa, con posible amputación e inclusive la ... -
V4142 Sgr: Double periodic variable with an accretor surrounded by the accretion disk's atmosphere
(EDP SCIENCES S A, 2023-02-10)Context. A detailed study of the close interacting binary V4142 Sgr, based on photometric and spectroscopic analyses, indicates that this system belongs to the enigmatic class of Algol-like variables exhibiting a long ...