Voz del cliente SQyF, Relacionamiento con el cliente programa cámaras móviles acumulado 2011 - 2012

Banco del conocimiento

Informe ejecutivo infopag. Comparativo y evolución de quejas 2012 vs 2011

Banco del conocimiento

Resolución No. 174

Servicios registrales

Synechococcus sp. PCC 7002 CpcB lyase null mutations alter phycocyanin chromophore function and, consequently, affect the redistribution of excitation energy via the light state transition /

Phycobilisomes are the major light harvesting complexes for cyanobacteria and phycocyanin is the primary phycobiliprotein of the phycobilisome rod. The phycocyanobilin lyases responsible for chromophorylating the phycocyanin p subunit (CpcB) have been recently identified in the cyanobacterium Synechococcus sp. PCC 7002. Surprisingly, mutants missing the CpcB lyases were nevertheless capable of producing pigmented phycocyanin. 10K absorbance measurements revealed that the energy states of the p phycocyanin chromophores were only subtly shifted; however, 77K steady state fluorescence emission spectroscopy showed excitation energy transfer involving the targeted chromophores to be highly disrupted. Such evidence suggests that phycobilin orientation within the binding domain is specifically modified. We hypothesized that alternate, less specific lyases are able to act on the p binding sites. A phycocyanin linker-polypeptide deficient mutant was similarly characterized. The light state transition, a short term adaptation of the photosynthetic light harvesting apparatus resulting in the redistribution of excitation energy among the photo systems, was shown to be dominated by the reallocation of phycocyanin-absorbed excitation energy. Treatment with a high M phosphate buffer effectively prevented the redistribution of both chlorophyll a- and phycobilisome- absorbed excitation energy, suggesting that the two effects are not strictly independent. The mutant strains required a larger redistribution of excitation energy between light states, perhaps to compensate for their loss in phycobilisome antenna function.

The efficacy of anti-predator behaviour in the wood fog tadpole (Rana sylvatica) /

Activity has been suggested as an important behaviour that is tightly linked with predator avoidance in tadpoles. In this thesis I examine predator-prey relationships using wood frog tadpoles {Rana sylvaticd) as prey and dragonfly larvae {AnaxJunius) and backswimmers {Notonecta undulatd) as predators. I explore the role of prey activity in predator attack rates, prey response to single and multiple predator introductions, and prey survivorship. The data suggest that Anax is the more successful predator, able to capture both active and inactive tadpoles. In contrast, Notonecta strike at inactive prey less frequently and are seldom successftil when they do. A mesocosm study revealed that the presence of any predator resulted in reduced activity level of tadpoles. Each predator species alone had similar effects on tadpole activity, as did the combined predator treatment. Tadpole survivorship, however, differed significantly among both predator treatments and prey populations. Tadpwles in the combined predator treatment had enhanced risk; survivorship was lower than that expected if the two predators had additive effects. Differences in survivorship among wood frog populations showed that tadpoles from a lake habitat had the lowest survivorship, those from a shallow pond habitat had an intermediate survivorship, and tadpoles from a marsh habitat had the highest survivorship. The frequency of interactions with predators in the native habitat may be driving the population differences observed. In conclusion, results from this study show that complex interactions exist between predators, prey, and the environment, with activity playing a key role in the survival of tadpoles.

Human skeletal muscle pyruvate dehydrogenase phosphatase activity and expression : the effect of aerobic capacity

Activation of pyruvate dehydrogenase (PDH), which converts pyruvate into acetyl-CoA, is accomplished by a pair of specific phosphatases (PDP 1 & 2). A cross-sectional study investigating the effect of aerobic capacity on PDP activity and expression found that: 1) PDP activity and PDP! protein expression were positively correlated with most aerobic capacity measures in males (n=lS), but not females (n=12); 2) only males showed a positive correlation between PDP activity and PDPl protein expression (r=0.47; p=O.05), indicating that the increase in PDP activity in males is largely explained by increased PDPl protein expression, but that females rely on another level for PDP activity regulation; and 3) PDP} and Ela protein expression increase in unison when expressed relative to the E2 core. These data suggest that with increased aerobic capacity there is an increased capacity for carbohydrate oxidation through PDH, via El a, and an increased ability to activate PDH, via PDP, when exercising maximally.

Truman Raymond, Esq., M.D. - Obituary

An obituary describing the life of Dr. Truman Raymond of Welland County. The article recounts the many accomplishments of Dr. Raymond and his involvement in the Temperance movement. His sons are mentioned, including the predeceased Erastus B. Raymond, Esq., and his eldest son Lorenzo D. Raymond , Esq, who is appointed to the office of Clerk of Peace for Welland County. Dr. Raymond resided with his son Lorenzo at the time of his death.

Morfogénesis del ovario de la rata blanca (Rattus n. albinus)

Tesis (Maestría en Ciencias) UANL

Alelos del gen del receptor de la vitamina D y su relación con la densidad mineral osea.

Tesis (Maestría en Ciencias con Especialidad en Biología Molecular e Ingeniería Genética) UANL

El impacto vial de centros comerciales en la ciudad de Villahermosa,Tabasco

Tesis (Maestría en Ciencias, Especialidad en Ingeniería de Tránsito) UANL

Optimización de la producción en máquinas en paralelo de inyección de plástico.

Tesis (Maestro en Ciencias en Ingeniería de Sistemas) UANL, 2012.

Lectura de la experiencia profesional de nueve maestros educación musical. Educación pública preescolar en Nuevo León.

Tesis (Maestría en Artes con acentuación en Artes Visuales) UANL, 2014.

Tractatus de re criminali, sive controversiarum : Ufufrequentiumin caufis criminalibus, cum earum decifionibus tam in Aula Suprema ac Hifpana Criminum, quám in fummo senatu novi Orbis

UANL