Meet-Up de Español, cómo hablar español ayuda a moldear la identidad y hasta que punto el lenguaje impide o facilita las relaciones interculturales

Compartir experiencias con diferentes personas y culturas alrededor del mundo se está haciendo cada vez más fácil gracias a la globalización. Por esto, hoy en día la comunicación intercultural se ha vuelto una de las teorías más relevantes en las ciencias sociales para el estudio del concepto de identidad. Una de las formas de construir y moldear identidad es la creación de espacios interculturales, donde la comunicación juega un papel primordial al permitir el intercambio de culturas. Los Meet- Up Groups, es uno de aquellos espacios interculturales que permiten identificar cómo la comunicación ayuda a facilitar o impedir el desarrollo de relaciones humanas. Este estudio se concentró en un Meet-Up de español para identificar cómo el lenguaje es un factor fundamental para moldear identidades, disminuir el choque cultural e, incluso, permitir el desarrollo de fenómenos como la hibridación

Semiochemical Attractants of the Parasitic Fly Philornis Downsi in the Galapagos Islands

Larvae of the parasitic fly Philornis downsi (Diptera: Muscidae) feed on the blood and tissues of passerine chicks. Parasitism by P. downsi contributes to increasing mortality and population declines in several bird species in the Galapagos Islands. This dissertation focuses on the identification of chemical attractants (food odors, sex or aggregation pheromones) for P. downsi. These attractants are important for increased trapping efficiency in the management of P. downsi. Dipteran mating and reproductive success are dependent on chemical communication, yet little is still known about the chemical ecology of most Diptera, with the exception of some agricultural pests and vectors of pathogens. My studies of chemical communication in P. downsi found some food odors, such as the volatile fermentation products (ethanol and acetic acid) produced by the yeast Saccharomyces cerevisiae, to be attractive. Maximal attraction was attained by a mixture of 3% ethanol and 0.3% acetic acid. The addition of 250 ml of this solution to an external reservoir that dispensed into a McPhail trap prolonged the effectiveness of these compounds in the field. Sex and aggregation pheromones are also important in this system; experiments identified males as the attractive sex. GC-EAD and GC-MS analyses on crude and photo-oxidized cuticular lipids of both sexes identified 18 photo- oxidation compounds produced by males as potential attractants for females. Genitalia extracts of each sex had markedly different volatile compounds. Extracts from male genitalia were significantly attractive to females in y-tube olfactometer assays (p= 0.02). Based on data presented here, I hypothesize that P. downsi mating begins with feeding behaviors, followed by location of host nests by male and female flies. Male flies then emit pheromones to attract the females. Mating occurs after mate location by visual identification and sexual or contact pheromones. Mating and communication systems in the calyptrate muscoids are poorly understood in general. In addition to identifying attractants specific to P. downsi, some of the work presented here may be broadly applicable to the chemical communication of muscoid flies in general

Liver Transplantation for Polycystic Liver Disease

Four female patients with severe complications of polycystic liver disease were treated with liver replacement; two patients were also given kidneys from their liver donors. All four of the patients were suffering from extreme fatigue. Three of the recipients have survived for 8, 11, and 60 months with normal liver function and present good health. The fourth patient recovered from a liver-kidney transplantation, but 5 months later, fulminant hepatic failure developed in this patient due to hepatitis B virus, and she died despite emergency hepatic retransplantation. © 1990, American Medical Association. All rights reserved

Energy efficiency: training for baccalaureate students

Ecuador has an enormous unused potential in renewable energy, due to factors such as its location on the equator, which allows it to receive the maximum solar energy per unit of surface area, its high rainfall and the Andes mountain range, which provide it with considerable hydroelectric and geothermal resources. As a result of the relative abundance of oil from 1972 and the debt crisis that began in 1982, the development of renewable energy in the country has been discontinuous, insufficient, and has concentrated on large hydroelectric projects, which in some cases have suffered serious deficiencies. The energy transition towards the adoption of renewable energy sources is a strategic need in Ecuador, mainly due to the progressive depletion of oil reserves, which will hardly allow exports to be maintained for more than 20 years

Surgical technique of orthotopic liver transplantation

Athough significant strides have been made in the surgical technique of orthotopic liver transplantation, numerous problems and nuisances are still encountered. Further surgical refinements will certainly evolve. The development of better preservation techniques, the use of intraoperative flowmeters, and the availability of new technologies, such as an artificial liver, should impact and advance the techniques of liver transplantation significantly and improve the overall results even further