644 research outputs found
Critical Raw Materials for Strategic Technologies and Sectors in the EU. A Foresight Study
No full textThis study looks at the supply chains of the nine technologies below used in the three strategic sectors renewable energy, e-mobility, defence and aerospace.
It also attempts to provide a first answer, based on available knowledge and models, to where future challenges lie and how competition for resources may evolve
Addressing ethnic prejudice in youth: Developmental trajectories and associations with educational identity
No full textStudying how attitudes develop in the transition from late adolescence to emerging adulthood offers unique insights into future generations' perceptions of society and of others. However, findings on ethnic prejudice during this life period are mixed. The current research aims to examine the development of affective and cognitive ethnic prejudice, adopting a person-centered approach. Furthermore, it examines the associations between educational identity processes and prejudice. A sample of 297 Italian adolescents (M-age = 17.48, SDage = 0.79, 37.8% males) participated in a five-wave longitudinal study. At the mean level, cognitive prejudice decreased slightly over time, while affective prejudice remained stable. Additionally, rank-order stability coefficients were high (r >= .526). Moreover, for each dimension of prejudice (i.e., cognitive and affective) taken separately, three groups of participants were identified based on their high, moderate, or low scores, respectively. Finally, higher levels of educational identity in-depth exploration at baseline significantly increased the chances of adolescents falling into the low rather than the moderate group for both cognitive and affective prejudice. Conversely, it significantly reduced the chances of being in the high compared to the moderate group for affective prejudice. This study highlights the importance of considering multiple components of prejudice and their reciprocal associations with identity processes to identify at-risk segments of the adolescent and emerging adult populations
MgB2: An old material a new superconductor. An extensive scanning tunneling spectroscopy study.
No full textWe have performed an extensive scanning tunneling spectroscopy study on different MgB2 samples. In the standard N–I–S geometry on powders, we observed spectra characterized by pronounced double gap structures that can be modeled by supposing two independent tunneling channels, with gap magnitudes and , i.e., well above and well below the classical BCS limit. In the conductance characteristics of oriented thin films, the presence of the small gap Δπ was predominant and only in few cases a weaker structure appeared around . Recent results on as-grown c-axis oriented single crystals yielded only small gap confirming the 3D π-band nature of this feature, that survives in magnetic field higher than
IS PREVENTIVE CANAL THERAPY NECESSARY IN TEETH INVOLVED IN RADICULAR CYSTS? A CASE SERIES
No full textTunneling spectroscopy and surface states in YBa2Cu3O7 and Tl2Ba2CaCu2O8 break junctions
No full textWe present the tunneling characteristics of HTSC break junctions realized on high quality c-axis oriented YBa2Cu3O7 (Y- 123) and TI2Ba2CaCu2O8 (TI-2212) thin films, with T-c (rho = 0) = 91 K and T-c (rho = 0) = 110 K, respectively. By means of this technique, the coupling of the two electrodes can be varied as a function of the externally piloted movements of a micrometric screw. The characteristics are measured in the q-p tunneling regime for different directions. Along the nodal directions. we observe a huge zero bias conductance peak (ZBCP), and gap-related structures at low biases for both materials. For tunneling directions close to (100), the conductance curves show gap-related maxima at about +/- 20 and +/- 40 mV for Y-123 and at about +/- 25 and +/- 50 mV for the TI-2212. In these cases. the ZBCP is highly depressed (5%) or completely absent. (C) 2001 Elsevier Science B.V. All rights reserved
Addressing ethnic prejudice in youth: Developmental trajectories and associations with educational identity
No full textStudying how attitudes develop in the transition from late adolescence to emerging adulthood offers unique insights into future generations’ perceptions of society and of others. However, findings on ethnic prejudice during this life period are mixed. The current research aims to examine the development of affective and cognitive ethnic prejudice, adopting a personcentered approach. Furthermore, it examines the associations between educational identity processes and prejudice. A
sample of 297 Italian adolescents (Mage = 17.48, SDage = 0.79, 37.8% males) participated in a five-wave longitudinal study. At the
mean level, cognitive prejudice decreased slightly over time, while affective prejudice remained stable. Additionally, rankorder stability coefficients were high (r ≥ .526). Moreover, for each dimension of prejudice (i.e., cognitive and affective) taken
separately, three groups of participants were identified based on their high, moderate, or low scores, respectively. Finally,
higher levels of educational identity in-depth exploration at baseline significantly increased the chances of adolescents falling
into the low rather than the moderate group for both cognitive and affective prejudice. Conversely, it significantly reduced the
chances of being in the high compared to the moderate group for affective prejudice. This study highlights the importance of
considering multiple components of prejudice and their reciprocal associations with identity processes to identify at-risk
segments of the adolescent and emerging adult population
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