In two-dimensional systems, dissipative vortices are described by a complex Ginzburg-Landau equation (CGLE) which has a universal character and describes such different systems as fluids, superfluids, superconductors, liquid crystals, granular media, magnetic media, and optical dielectrics, to me...
Star formation is fundamental for the processes of planet formation and galaxy evolution. Here we present an analysis of the gas kinematics of the ISF, a massive filament hosting a young embedded cluster, in the Orion A cloud through observations of different molecular transitions. We derive kine...
La formación estelar es fundamental para los procesos de formación planetaria y evolución de galaxias. Aquí presentamos un análisis cinemático del gas molecular del filamento ISF, un filamento masivo que contiene un cúmulo joven, en la nube de Orión A, a través de observaciones de distintas trans...
En la presente tesis desarrollo una cronología de cambios en la vegetación y paleofuegos que abarca los últimos 17.000 años a partir de testigos de sedimentos lacustres obtenido de Laguna Churrasco (45°41’S, 71°49’O, 798 msnm), región de Aysén. El objetivo es documentar la historia de la vegetaci...
In this thesis I present a record of changes in vegetation and paleofires over the last 17,000 years from sediment cores obtained from Laguna Churrasco (45 ° 41'S, 71 ° 49'W, 798 masl), Aysén region. The objective is to document the history of vegetation and paleofires, their reciprocal relations...
Reptile adaptation to desert environments is a relevant topic in evolutionary biology. Aridity could constitute a strong selective pressure on organisms that colonize these habitats which can develop morphological, physiological and behavioral features that confer better survival in this extreme ...
Pathogenicity islands excision is a mechanism that occurs in several Enterobacteriaceae family members, including Salmonella enterica subspecie enterica serovars. ROD21 is an excisable pathogenicity island present in the chromosome of Salmonella enterica serovar Enteritidis and other serovars. It...
For the past two decades, the lattice Boltzmann method has proven to be an accurate and efficient
alternative for solving the shallow water equations. This system of equations describes the evolution
of the free-surface of a fluid and it is applicable in open ocean simulations, such as tsunamis. ...
The main oxidant species in Fenton and Fenton-like reaction driven by catechol are HO∙ and Fe(IV). The prevalence of these species are dependent of reaction conditions. HO∙ production has been broadly studied in Fenton and Fenton-like reaction driven by catechol. However, there is not a systemati...
La principal especie oxidante en la reacción de Fenton y de tipo-Fenton conducido por catecol son HO∙ y Fe(IV). La prevalencia de estas especies son dependientes de las condiciones de reacción. La producción de HO∙ ha sido ampliemente estudiada en las reacciones de Fenton y de tipo-Fenton conduci...
Las bacterias fotótrofas son un grupo heterogéneo de microorganismos que se encuentra distribuido en varios filos bacterianos, los cuales tienen un rol fundamental en la fotosíntesis y en el ciclo del carbono.
Las bacterias pueden realizar fotosíntesis oxigénica y anoxigénica. En la fotosí...
The main goal of this thesis was to evaluate the prophylactic capacity of L. fermentum UCO-979C against the colonization of the Mongolian gerbil stomach by H. pylori SS1. The probiotic strain was able to colonize the antral region of the stomach of the gerbils for periods over 6 days, as detected...
El objetivo de esta tesis fue evaluar la capacidad profiláctica de L. fermentum UCO-979C sobre H. pylori SS1 en estómago de gerbos de Mongolia. Mediante cultivo y PCR se determinó que L. fermentum UCO-979C coloniza el estómago de gerbos de Mongolia por un periodo superior a 6 días, siendo esta co...
