Search results for "growth"
showing 10 items of 5134 documents
A new formulated diet for sea urchin (Paracentrotus lividus) aquaculture
2010
PRENATAL DEVELOPMENT OF TEMPORO-MANDIBULAR JOINTS: STATE OF ART
2017
The aim of this work is to analyze the state of the art of temporo-mandibular joint (MJ) to understand the varoius stage of the development of the same during embryogenesis. Various theories have been analyzed, such as the formation of apoptotic or the important role of growth factors, or the Valencia et studies in which are analyzed to numerous articular diseases in various stage of development. By the aforementioned studies show that many factors, of a different nature, are to be involved in the prenatal developlment of this important joint.
The role of Plant Growth Promoting (PGP) bacteria in the growth of Mediterranean diet plants producing high-value compounds
2023
Loss of fertility, together with drought and aridity, results in soil unproductivity and eventually desertification. Unsustainable agricultural practices are currently stressing the soil: an undervalued resource that, in addition to food, provides a multitude of invaluable services such as regulating the microclimate, reducing contaminants, and capturing CO2. Hence, there is an increasing need to resort to sustainable approaches toward agricultural systems. Although Sicily is one of those regions most affected by water shortages, it is at the same time a reservoir of drought-resistant Mediterranean plants with high nutritional value and a rich microbiota. This project aims to promote agricu…
Advanced electrospun matrices based on polysaccharide derivatives for applications in regenerative medicine
2021
The complete regeneration of damaged human tissues and organs is still a significant challenge. The integrative use of biomaterials, cells and bioactive factors in all-in-one devices exploits all current knowledge of materials science, nanotechnology and stem cell biology to best mimic the complex hierarchical architecture of native tissues. The artificial microenvironment design must be properly tuned to match the physicochemical features of the target, offering adequate nanoscale patterns and biological domains for cellular interactions. Scaffolds must promote and guide the regeneration route by mimicking host signalling pathways through the controlled release and retention of drugs or gr…
Dual Boundary Element Method for fatigue crack growth: implementation of the Richard’s criterion
2013
A new criterion for fatigue crack growth, whose accuracy was previously tested in the literature with the Finite Element Method, is here adopted with a Dual Boundary Element formulation. The fatigue crack growth of an elliptical inclined crack, embedded in a three dimensional cylindrical bar, is analyzed. In this way in addition to the propagation angle estimated by the Sih’s criterion, it is possible to take into account a twist propagation angle. The two propagation criteria are compared in terms of shape of the propagated crack and in terms of SIFs along the crack front. The efficiency of the Dual Boundary Element Method in this study is highlighted.
Evaluation of residual stress during fatigue test in a FSW joint
2007
At present, friction stir welding (FSW) represents one of the most interesting techniques in the field of welding. The process is has been implemented in industrial practice for joining aluminium alloys, while the welding of the titanium alloy and the steels is still primarily in a developmental stage. The thermo-mechanical action of the tool causes a residual stress field in the FSW joint. Although, the peak temperatures of the process are relatively low; residual stresses similar to the traditional welding technique may develop in the FSW joint. Moreover, the restraints of clamps, which are used for fixing the plates during the process, impede the relief of the heated zones that causes lo…
Vulnerability to Forced Labour and Trafficking: The case of Romanian women in the agricultural sector in Sicily
2015
This paper focuses on labour and sexual exploitation faced by Romanian female workers employed in the agricultural sector in Ragusa, Sicily, Italy. Drawing on fieldwork conducted in 2013 and 2014 with Romanian female farm workers in Ragusa, the paper identifies factors that contribute towards their vulnerability to exploitation. By paying specific attention to the experiences of women who are mothers with dependent children, we look at structural factors that increase their vulnerability and consider how this vulnerability ‘forces’ women into situations whereby they effectively accept and/or submit to abuse. We also highlight how European Union (EU) citizenship does not automatically protec…
Predictors and outcomes associated with the growth curves of self-efficacy beliefs in regard to anger and sadness regulation during adolescence: a lo…
2023
IntroductionThis longitudinal study examined unique and joint effects of parenting and negative emotionality in predicting the growth curves of adolescents’ self-efficacy beliefs about regulating two discrete negative emotions (anger and sadness) and the association of these growth curves with later maladjustment (i.e., internalizing and externalizing problems).MethodsParticipants were 285 children (T1: Mage = 10.57, SD = 0.68; 53.3% girls) and their parents (mothers N = 286; fathers N = 276) from Colombia and Italy. Parental warmth, harsh parenting, and internalizing and externalizing problems were measured in late childhood at T1, whereas early adolescents’ anger and sadness were measured…
Roma Youth
2021
This chapter highlights the importance of integrating research on positive youth development processes in the most disadvantaged youth groups. The authors focused on Roma youth, representing a prototypical low-status minority group. The first part of the chapter examines the demographics and the socially, politically, and ideologically challenging contexts in which Roma young people are embedded, taking into account the case of Italy, one European country with high anti-Roma sentiments. The second part summarizes the literature that deals with social-psychological factors underlying the developmental functioning and optimal well-being of Roma youth in spite of adversity. The third part focu…
Central polynomials of graded algebras: Capturing their exponential growth
2022
Let G be a finite abelian group and let A be an associative G-graded algebra over a field of characteristic zero. A central G-polynomial is a polynomial of the free associative G-graded algebra that takes central values for all graded substitutions of homogeneous elements of A. We prove the existence and the integrability of two limits called the central G-exponent and the proper central G-exponent that give a quantitative measure of the growth of the central G-polynomials and the proper central G-polynomials, respectively. Moreover, we compare them with the G-exponent of the algebra.