Search results for "wt"
showing 10 items of 5424 documents
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…
A moving bed membrane bioreactor pilot plant for carbon and nutrient removal
2016
The paper reports the main results of an experimental gathering campaign carried out on a moving bed membrane bioreactor pilot plant conceived for carbon and nutrients removal according to a University of Cape Town scheme. Organic carbon, nitrogen and phosphorus removal, biokinetic/stoichiometric constants, membrane fouling tendency and sludge dewaterability have been assessed during experiments. The achieved results showed that pilot plant was able to guarantee very high carbon removal, with average efficiency of 98%. In terms of nitrification, the system showed an excellent performance, with efficiencies higher than 98% for most of the experiments. This result might be related to the pres…
Integrated urban drainage uncertainty assessment : the influence of the likelihood efficiency measures
2007
Integrated urban drainage uncertainty assessment : the influence of the likelihood efficiency measures
PROCEEDINGS 11th International Conference on Urban Drainage Modelling (UDM) Sep. 23–26, 2018 Palermo, Italy
2018
In recent decades, urban drainage systems are receiving increased attention as interests in sustainable water resources grow. Modelling of urban drainage system is of paramount importance for enhancing human life. Specifically, modelling of urban drainage system focuses on the main and advanced topics (e.g., water quality and quantity, urban flooding and modelling, urban flood forecasting and risk analysis, socio-economic interactions and modelling tools, etc… ) by paying the attention on the interrelationships among the entire water cycle, environment and society.
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…
Una procedura generale per la valutazione delle tensioni residue con il metodo del foro
2009
Il metodo della rosetta forata è una delle più note tecniche semidistruttive di analisi delle tensioni residue su componenti meccanici. In presenza di tensioni non uniformi, il campo delle tensioni può essere determinato a partire dalle deformazioni rilassate utilizzando varie procedure di calcolo basate sulla stessa equazione, chiamata equazione integrale. In questo lavoro viene presentata una nuova procedura di calcolo basata sul metodo di Newton-Raphson per la determinazione degli zeri di una funzione. La tecnica proposta presenta due importanti vantaggi rispetto alle altre tecniche: 1) è basata su una teoria piuttosto generale che permette di ottenere le principali tecniche esistenti co…