888 research outputs found
I casi pilota
No full textI paragrafi "Risorse imprenditoriali" ed "Energia grigia" (p. 72-74) sono stati scritti con Nadia Battaglio; "Produzione di energia da fonti rinnovabili" (p. 74-90) con Francesco Stassi; "Ranco Sotto, occasione di sperimentazione" (p. 91-99) con Nadia Battaglio; "Caso studio valle Varaita" (p. 100-105) con Francesco Stassi
The Hippo Show Must Go On: YAP Activation as a Therapeutic Strategy in Colorectal Cancer
No full textThe role of Hippo pathway in colorectal cancer (CRC) initiation and progression has been controversial. In this issue of Cell Stem Cell, Cheung et al. (2020) shed new light on a distinct function of the transcriptional co-activator YAP as a tumor suppressor and Wnt pathway inhibitor in CRC
Il-4 and IL 10 up regulate FLIP and PED conferring CD95-induced apoptosis refractoriness
No full text
Microbiological and calorimetric investigations on degraded marbles from the Cà d'Oro facade (Venice)
No full textMicrobiological, physicochemical and biochemical investigations were carried out on degraded marble samples from the Ca d'Oro facade (Venice) in order to verify the presence of biodeterioration agents. The aerobic heterotrophic bacteria (mean value 10(5) CFU/g marble), which were also observed by scanning electron microscope (SEM), were characterized as belonging to the Micrococcus and Bacillus genera. Nitrifying and sulphooxidizing bacteria were not found in any samples. The fungi (mean value 10(2) CFU/g marble) were attributed to the Penicillium and Aspergillus genera. Enrichment cultures revealed the presence of photosynthetic microorganisms belonging to the div. Cyanophyta and Chlorophyta.
The metabolic activity of the microorganisms derived from the cultural tests, was confirmed by the ATP content extracted directly from the powdered marble samples (average 3170 pg ATP per g marble).
Microbiological alterations of stone are the result of the metabolic activity of the microorganisms, whose heat production is an expression of this activity. Confirmation of the presence of the microorganisms on the degraded marble samples was, therefore, obtained by calorimetric investigations, which revealed that the process is completely exothermic and can be divided into two phases: the first showed the attainment of a plateau, typical of a zero-order reaction; the second was characterized by a peak followed by an abrupt arrest
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