Search results for "transition [photon]"
showing 10 items of 273 documents
Oxygen Radical Scavengers
2010
The myocardium can tolerate only relatively short periods of total myocardial ischemia without myocardial cell death. Following short ischemic periods, ischemic damage is reversible by reperfusion. However, with increasing duration and severity of ischemia, the damage inflicted to cardiomyocytes following reperfusion becomes irreversible. The combined pathologic events in the myocardium that follow a critical period of ischemia and leading to either reversible or irreversible damage to both cardiomyocytes and cardiac microvasculature is known as ischemia-reperfusion injury (Goldhaber and Weiss 1992).
North/south differences among Italian emerging adults regarding criteria deemed important for adulthood and life satisfaction
2016
The main goal of this study was to compare Northern and Southern Italian emerging adult university students, regarding the importance attributed to criteria for adulthood and the levels of life and education satisfaction. Self-report questionnaires were filled by 475 Northern and Southern Italian University students (Age M = 22.91, 76% females, n = 359). Multivariate analysis of variance revealed that Southern emerging adults were more likely to place importance on family capacities, norm compliance, interdependence and role transitions as criteria for achieving adulthood than Northern emerging adults. Regarding gender differences, females were more likely to believe in the importance of no…
Microstructure and characteristic properties of dogfish skin gelatin gels prepared by freeze/spray-drying methods
2020
International audience; The effects of two pretreatments (microwaves or oven-drying) on the dogfish (Squalus acanthias) skin as well as two drying processes (freeze-drying or spray-drying) on the extracted gelatins were studied. Thus six types of gelatins were obtained, three of which were freeze-dried (FG) and the others were spray-dried (SG), from the untreated skin (US), microwaves-pretreated skin (MS) and oven-pretreated skin (OS). The highest yield (8.67%) was obtained for the OSFG, while the lowest one (3.06%) was measured for the OSSG. Interestingly, all gelatins exhibited relatively high protein (84.02-89.53%), and low lipid (0.50-1.71%) and ash (3.05-7.17%) contents. In addition, g…
Grain boundary ridges slow dawn grain boundary motion: In-situ observation
2014
Abstract The impact of grain boundary (GB) ridge on motion of high-angle GB in Zn was studied. The steady-state motion of faceted GB half-loop with [ 10 1 ¯ 0 ] tilt GB and GB ridge was recorded in-situ. The temperatures of faceting–roughening transition were experimentally defined for three GB half-loops. Above the transition temperature GB half-loops had GB “rough-to-rough” ridge with continuously curved GB segments. Below the transition temperature a facet appeared and coexisted with two “facet-to-rough” ridges. For the first time we could extract mobility of “rough-to-rough” and “rough-to-facet” ridges and bring out clearly that GB ridge slows down GB motion. Present removes contradicti…
Pressure- and temperature-induced valence tautomeric interconversion in a o-dioxolene adduct of a cobalt-tetraazamacrocycle complex
2001
An electronic switch at the molecular level has been realized by using a class of ionic compounds of the formula [Co(L)(diox)]Y (L = tetraazamacrocyclic ligand, Y = mononegative anion). Such compounds undergo temperature- and pressure-induced intramolecular one-electron transfer equilibria. The transition temperature of interconversion varies with the nature of the counterions Y (Y = PF6, BPh4, I). Surprisingly the effect of the anion on the transition temperature is not only governed by its volume but also by its coulombic interaction.
“Equally, but in our own way” : First-time parents’ prenatal expectations of coparenting
2022
This study examined the expectations of expectant first-time parents on coparenting in a Finnish two-parent family. Thirty expectant couples were individually interviewed (N = 60) during the third trimester of pregnancy. The semi-structured interviews focused on participants’ expectations and hopes on future coparenting. Thematic analysis revealed that the expectant first-time mothers and fathers saw coparenting as multidimensional. They talked about coparenting in terms of 1) division of labour issues, 2) management of family dynamics, 3) childrearing agreement, 4) coparental support, and 5) learning and developing. Thus, the expectant couples hoped for a coparenting relationship in which …
"Musta tulee näin hyvä aikuinen" : siirtymävaihe nuoruudesta aikuisuuteen psyykkisesti kehitysvammaisilla
1997
The Concordance between Teachers’ and Parents’ Perceptions of School Transition Practices: A Solid Base for the Future
2015
This study focuses on parents’ and teachers’ perceptions of practices aimed at easing the transition to formal schooling (e.g., familiarization with the school, discussions about the school entrants). A total of 230 preschool teachers, 131 elementary school teachers, and 2,662 mothers and fathers filled in a questionnaire containing items on how important they considered different preschool-school transition practices. The participants considered the various transition practices to be at least somewhat important. On average, familiarization with the school was considered to be most important, whereas teacher co-operation and joint writing of curricula were considered to be least important. …
Are there similar or divergent transitions to adulthood in a Mediterranean context? A cross-national comparison of Italy and Spain
2016
The purpose of this study was to examine the differences and similarities between Italy and Spain in regard to emerging adults’ perceptions of identity status, autonomy, attachment, and life satisfaction. The goal was to verify whether a Mediterranean model of transitions from adolescence to adulthood exists. Three hundred and forty undergraduate students (171 Italians and 169 Spanish) ranging in age from 19 to 22 completed measures of identity status, emotional autonomy, attachment style, and life satisfaction. Multiple correspondence analyses provided a graphic synthesis of results. The results indicate that no common model of young adult development exists in Spain and Italy and that Ita…
Aging of the liver: Age-associated mitochondrial damage in intact hepatocytes
1996
Mitochondrial damage may be a major cause of cellular aging. So far, this hypothesis had only been tested using isolated mitochondria. The aim of this study was to investigate the involvement of mitochondria in aging using whole liver cells and not isolated mitochondria only. Using flow cytometry, we found that age is associated with a decrease in mitochondrial membrane potential (30%), an increase in mitochondrial size, and an increase in mitochondrial peroxide generation (23%). Intracellular peroxide levels were also increased. The number of mitochondria per cell and inner mitochondrial membrane mass did not change. Gluconeogenesis from glycerol or fructose (mitochondrial-independent) did…