Search results for "Caliza"
showing 6 items of 656 documents
Energetics of hydride and electron pair attachment to EX30/+ (E=B, C, Al, Si and X=F, Cl, Br, I) and the study of bonding trends among EX30/+, EX32−/…
2004
Abstract A theoretical gas-phase “ligand-free” or “electron pair affinity” (EPA) approach, based on CCSD(T)/(SDB-)cc-pVTZ//MP2/(SDB-)cc-pVTZ electronic structure calculations, is introduced as a possible means for determining Lewis acidity trends among planar EX30/+ (E = B, C, Al, Si; X = F, Cl, Br, I) species. In this treatment, the free electron pair is considered to be an extreme Lewis base. The calculated EPA values are compared with experimental Lewis acidities, previously calculated fluoride ion affinity (FIA) and hydride ion affinity (HA) trends, and are found to exhibit reasonable correlations in all cases. The bonding in the planar and trigonal pyramidal conformations of EX30/+ and…
Cellular and tissue expression of DAPIT, a phylogenetically conserved peptide
2012
DAPIT (Diabetes Associated Protein in Insulin-sensitive Tissues) is a small, phylogenetically conserved, 58 amino acid peptide that was previously shown to be down-regulated at mRNA level in insulin-sensitive tissues of type 1 diabetes rats. In this study we characterize a custom made antibody against DAPIT and confirm the mitochondrial presence of DAPIT on cellular level. We also show that DAPIT is localized in lysosomes of HUVEC and HEK 293T cells. In addition, we describe the histological expression of DAPIT in several tissues of rat and man and show that it is highly expressed especially in cells with high aerobic metabolism and epithelial cells related to active transport of nutrients …
HSP90 AND ENOS PARTIALLY CO-LOCALIZE AND CHANGE CELLULAR LOCALIZATION IN RELATION TO DIFFERENT ECM COMPONENTS IN 2D AND 3D CULTURES OF ADULT RAT CARD…
2007
BACKGROUND INFORMATION: Cultivation techniques promoting three-dimensional organization of mammalian cells are of increasing interest, since they confer key functionalities of the native ECM (extracellular matrix) with a power for regenerative medicine applications. Since ECM compliance influences a number of cell functions, Matrigel-based gels have become attractive tools, because of the ease with which their mechanical properties can be controlled. In the present study, we took advantage of the chemical and mechanical tunability of commonly used cell culture substrates, and co-cultures to evaluate, on both two- and three-dimensional cultivated adult rat cardiomyocytes, the impact of ECM c…
The interaction of temporal-aspectual features in modal polysemy: a case-study from Sicilian
2009
THE INTERACTION OF TEMPORAL-ASPECTUAL FEATURES IN MODAL POLYSEMY: A CASE-STUDY FROM SICILIAN. We intend to analyse a number of Sicilian constructions involving the modal vuliri “want” and the modal periphrasis aviri a “have to+ infinitive”. They are used to express both modal values and futurity (Sicilian, but not Italian, lacks a synthetic future). Our analysis is largely based on Cognitive Grammar, according to which modality is a strategy of grounding, involving different kinds of subjectification (Langacker 1991; Traugott 1989), variously grammaticalised in languages. The scalar nature of grammaticalisation processes (Heine et al. 1991) also accounts for the polysemous behaviour of moda…
Grammaticalization of actional values in Archaic Latin
2008
This paper aims at showing how prefixation does not modify systematically the actional value of Latin verbs. Scholars of historical grammars of Indoeuropean languages and traditional studies about prefixation agree with the idea that in Latin, and in all Indoeuropean languages, preverbation results on actional value of predicates: Delbruck 1897 argued that prefixes perfectivize verbal meaning since they indicate its accomplishment; Meillet and Vendryes 1924 claimed that the prefixe focuses a specific point of the process described by the non prefixed verb; van der Heide 1934 believed that Latin preverbs express the accomplishment of the process denotated by the non prefixed verbs. More rece…
Agency and agentive prepositions in Late Latin
2011
I propose the results of an analysis whose object is the expression of the Agent by means of a prepositional phrase in Post-Classical and Late Latin passive constructions. My interest comprises both the prepositions used in Latin to encode the passive Agent (namely ab), and those constituting the bases for the development in the Romance languages (namely per and de). The analysis is based on the functional approach to Transitivity proposed by Hopper and Thompson 1980 and on Cognitive Grammar, specifically on Langaker 1991 and the various Luraghi’s works on prepositions and cases in ancient Indo-European languages.