Search results for "Expo"
showing 10 items of 2430 documents
Selection of Membrane RNA Aptamers to Amyloid Beta Peptide: Implications for Exosome-Based Antioxidant Strategies
2019
The distribution of amyloid beta peptide 42 (Aβ42) between model exosomal membranes and a buffer solution was measured. The model membranes contained liquid-ordered regions or phosphatidylserine. Results demonstrated that up to ca. 20% of amyloid peptide, generated in the plasma (or intracellular) membrane as a result of proteolytic cleavage of amyloid precursor proteins by β- and γ-secretases, can stay within the membrane milieu. The selection of RNA aptamers that bind to Aβ42 incorporated into phosphatidylserine-containing liposomal membranes was performed using the selection-amplification (SELEX) method. After eight selection cycles, the pool of RNA aptamers was isol…
Localization and dimension estimation of attractors in the Glukhovsky-Dolzhansky system
2016
UNCERTAINTY EVALUATION IN THE LOW-FREQUENCY MAGNETIC FIELD MEASUREMENTS WITH REGARD TO EXPOSURE OF HUMAN BEINGS
2010
The paper deals with low-frequency magnetic field measurements, with regard to exposure of human beings, carried out by using a broadband and isotropic instrument. These measurements are characterized by a very high uncertainty values if compared with the ones usually related to other electrical measurements. These large uncertainty values imply a high risk of wrong decision when there is the need to establish if a site complies or does not comply with a specified emission limits. A reduction of the uncertainty values implies a reduction of the risk. With this aim, in the paper we propose an approach which, in case of fields generated by electric power systems (50 or 60 Hz), allows an effec…
Lyapunov quantities and limit cycles in two-dimensional dynamical systems : analytical methods, symbolic computation and visualization
2011
Opinion dynamics, stubbornness and mean-field games
2014
This paper studies opinion dynamics and stubbornness using mean-field game theory. Assuming an initial exponential density function and affine control policies we analyze under what conditions the Fokker-Planck equation returns an exponential density function over the horizon. Consensus and clusters formation are also studied.
Internal resources as tools to increase the global competition: the Italian wine industry case
2017
Purpose The purpose of this paper is twofold: first, it identifies distinct organizational models in a sample of small and medium enterprises operating in the Sicilian wine industry; and second, it identifies the key factors enabling a superior export success. Design/methodology/approach Internal resources were analyzed theoretically in order to achieve the aims of the study. Subsequently the empirical investigation was carried out administering a questionnaire to a sample of 102 wineries in Sicily, Italy. A cluster analysis was performed in order to group these firms into homogeneous categories. Findings The findings show that success in the international market is more common among winer…
It's worth the trouble: Stressor exposure is related to increased cognitive reappraisal ability
2021
Recent theories propose moderate (compared to high or no) stressor exposure to promote emotion regulation capacities. More precisely, stressful situations are expected to serve as practice opportunities for cognitive reappraisal (CR), that is, the reinterpretation of a situation to alter its emotional impact. Accordingly, in this study, we expect an inverted U-shaped relationship between exposure to daily hassles and performance in a CR task, that is, best reappraisal ability in individuals with a history of moderate stressor exposure. Participants (N = 165) reported the number of daily hassles during the last week as indicator of stressor exposure and completed the Script-based Reappraisal…
La sociología de la educación y la teoría del reconocimiento de Axel Honneth
2017
El articulo relaciona la teoria del reconocimiento de Axel Honneth y la sociologia de la educacion. Hace una exposicion breve de las formulaciones y reformulaciones de la teoria del reconocimiento y explica las relaciones de la educacion con los modos de reconocimiento. El articulo critica las perspectivas dialogicas y comenta las posibilidades para el analisis de las practicas educativas. Por ultimo, se introduce la nocion de reconocimiento anticipatorio y se relaciona la teoria con los procesos de aprendizaje y con la nocion de semiformacion. ----- The article relates the recognition theory of Axel Honneth and the sociology of education. It gives a brief exposition of the formulations and…
Expertise préalable à la création d’un tableau de maladie professionnelle ou à l’élaboration de recommandations aux comités régionaux dereconnaissanc…
2022
Le plan d’actions sur les produits phytopharmaceutiques publié en avril 2018 vise notamment, sur la base des recommandations formulées par l’Inspection générale des affaires sociales, l’Inspection générale des finances et le Conseil général de l’alimentation, de l’agriculture etdes espaces ruraux dans leur rapport conjoint de janvier 2018, à améliorer la prise en charge des maladies professionnelles liées aux pesticides.Dans ce cadre, les pouvoirs publics ont, par courrier en date du 24 avril 2018, saisi l’Institut national de la santé et de la recherche médicale (Inserm) afin d’actualiser l’expertise collective « Pesticides : effets sur la santé » parue en 2013. Cette expertise synthétise …
No influence of magnetic fields on cell cycle progression using conditions relevant for patients during MRI.
2003
The purpose of this study was to examine whether exposure to magnetic fields (MFs) relevant for magnetic resonance imaging (MRI) in clinical routine influences cell cycle progression in two tumor cell lines in vitro. HL60 and EA2 cells were exposed to four types of MFs: (i) static MF of 1.5 and 7.05 T, (ii) extremely low frequency magnetic gradient fields (ELFMGFs) with ± 10 mT/m and 100 Hz, as well as ± 100 mT/m and 100 Hz, (iii) pulsed high frequency MF in the radiofrequency (RF) range (63.6 MHz, 5.8 μT), and (iv) a combination of (i–iii). Exposure periods ranged from 1 to 24 h. Cell cycle distribution (G0/G1, S, and G2/M phases) was analyzed by flow cytometry. Cell cycle analysis did not…