Repositorio UMAYOR: Envíos recientes
Mostrando ítems 3561-3580 de 8201
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Exploring the Effect of the Irradiation Time on Photosensitized Dendrimer-Based Nanoaggregates for Potential Applications in Light-Driven Water Photoreduction
(MDPI, 2019)Fourth generation polyamidoamine dendrimer (PAMAM, G4) modified with fluorescein units (F) at the periphery and Pt nanoparticles stabilized by L-ascorbate were prepared. These dendrimers modified with hydrophobic fluorescein ... -
Film Dressings Based on Hydrogels: Simultaneous and Sustained-Release of Bioactive Compounds with Wound Healing Properties
(MDPI, 2019)This research proposes the rational modeling, synthesis and evaluation of film dressing hydrogels based on polyvinyl alcohol crosslinked with 20 different kinds of dicarboxylic acids. These formulations would allow the ... -
A decentralized route to the origins of scaling in human language
(IOP PUBLISHING LTD, 2019)Zipf's law establishes that if the words of a (large) text are ordered by decreasing frequency, the frequency versus the rank decreases as a power law with exponent close to -1. Previous work has stressed that this statistical ... -
Original research Socio-demographic patterning of self-reported physical activity and sitting time in Latin American countries: findings from ELANS
(BMC, 2019)Background: Low levels of physical activity (PA) and prolonged sitting time (ST) increase the risk of non-communicable diseases and mortality, and can be influenced by socio-demographic characteristics. The aim of this ... -
Adaptation to milking agropastoralism in Chilean goat herders and nutritional benefit of lactase persistence
(WILEY, 2019)The genetic trait of lactase persistence (LP) evolved as an adaptation to milking pastoralism in the Old World and is a well-known example of positive natural selection in humans. However, the specific mechanisms conferring ... -
Novel and Convenient Synthesis of 2,7-Dialkyl-1,8-dihydro- as -indacenes
(GEORG THIEME VERLAG KG, 2019)A novel and convenient synthetic route towards dialkyl as -indacenes was achieved by alkylation of malonic esters with o -xylylene dibromide, to give the corresponding tetraester, and related diacid. The alkyl groups on ... -
What is the profile of the Chilean population compared to other countries of the world?
(SOC MEDICA SANTIAGO, 2019)Sin resumen -
Adiposity, healthy lifestyle and physical activity levels in housewives and women with paid employment in Chile
(SOC CHILENA NUTRICION, BROMATOLOGIA & TOXICOLOGIA, 2019)Lifestyle behaviours among women who take care of their home duties (housewives) and women who are currently working in paid employment is unknown in the Chilean population. The aim of this study was, therefore, to ... -
Characterization of polyphenol profile of extracts obtained from grape pomace and synergistic effect of these extracts and fungicides against Botrytis Cinerea
(SOC CHILENA QUIMICA, 2019)Botrytis cinerea is a phytopathogenic fungus that infects the aerial parts of approximately 250 plant species. Control of this fungus is based on synthetic fungicide application. However, it has been reported the detection ... -
Inhibition-Disruption of Candida glabrata Biofilms: Symmetrical Selenoesters as Potential Anti-Biofilm Agents
(MDPI, 2019)Candida glabrata is one of the most prevalent pathogenic Candida species in dental plaque on tooth surfaces. Candida biofilms exhibit an enhanced resistance against most antifungal agents. Thus, the development of alternative ... -
Enological Frontier of the Southern Cone of America: Cabernet-Sauvignon in Chile and Malbec in Argentina
(PONTIFICIA UNIV CATOLICA CHILE, FAC AGRONOMIA INGENIERIA FORESTAL, 2019)The article examines the causes of the enological frontier of the Southern Cone of America, located in the Andes Mountains, with the predominance of the Malbec variety to the east of the Andes (Argentina) and of ... -
Prevalence of the tracheal mite Acarapis woodi (Rennie) in Chile
(PONTIFICIA UNIV CATOLICA CHILE, FAC AGRONOMIA INGENIERIA FORESTAL, 2019)Tracheal acariosis in Apis mellifera (honey bee) is caused by the endoparasitic mite Acarapis woodi and affects the respiratory system. This disease has received very little empirical attention in Chile. Its prevalence is ... -
Analysis of Neur(o) Lexeme and its Derivatives in Anatomy Learning
(SOC CHILENA ANATOMIA, 2019)Neuroanatomy is one of the most complex areas addressed by students because of its complex and extensive language. That is why the term neuro could favor its learning, because multiple concepts and terms have it incorporated ... -
Psychiatric comorbidities in alcohol use disorder
(ELSEVIER SCI LTD, 2019)Alcohol use disorder is a major contributor to the morbidity and mortality burden worldwide. It often coexists with other psychiatric disorders; however, the nature of this comorbidity is still a matter of debate. In this ... -
Calreticulin Expression in Canine Placenta
(SOC CHILENA ANATOMIA, 2019)The placenta is an embryonic organ present in mammals, whose main functions are the exchange of nutrients and gases and to protect the fetus from potential immune damage mediated by paternal and maternal allogeneic differences ... -
Vitamin C in health and disease: a current perspective
(SOC CHILENA NUTRICION, BROMATOLOGIA & TOXICOLOGIA, 2019)Vitamin C is a well-known antioxidant. Its intake has been associated with a number of benefits, some of which lack a scientific basis. This review summarizes important biological aspects that determine vitamin C homeostasis, ... -
The hare, tortoise and crocodile revisited: Tree fern facilitation of conifer persistence and angiosperm growth in simulated forests
(WILEY, 2019)Forests in which conifers and angiosperms coexist in the canopy with a well-developed understorey/subcanopy have often been conceptualized as three component systems. In these systems, the coexistence and regeneration of ... -
Inhibition of miR-378a-3p by Inflammation Enhances IL-33 Levels: A Novel Mechanism of Alarmin Modulation in Ulcerative Colitis
(FRONTIERS MEDIA SA, 2019)Ulcerative colitis (UC) is an inflammatory bowel disease (IBD) characterized by mucosa damage associated with an uncontrolled inflammatory response. This immunological impairment leads to altered inflammatory mediators ... -
Transduction as a Potential Dissemination Mechanism of a Clonal qnrB19-Carrying Plasmid Isolated From Salmonella of Multiple Serotypes and Isolation Sources
(1664-302X, DOI: 10.33)Antimicrobial resistance is an increasing problem worldwide, and Salmonella spp. resistance to quinolone was classified by WHO in the high priority list. Recent studies in Europe and in the US reported the presence of small ... -
Winter Injury to Grapevine Secondary Phloem and Cambium Impairs Budbreak, Cambium Activity, and Yield Formation
(SPRINGER, 2019)Vitis vinifera is a species of temperate origin that reactivates the dormant secondary phloem from the previous year at the resumption of growth in spring. Following harsh winters, grapevines may display a set of symptoms ...