Field strength correlations in the QCD vacuum at short distance

We determine by numerical simulations on a lattice the gauge--invariant two--point correlation function of the gauge field strengths in the QCD vacuum, down to a distance of 0.1 fm.Comment: 9 pages, LaTeX file, + 3 PS figures, uuencoded-tar-compresse

The Effect of Extending the Duration of Eligibility in an Italian Labour Market Programme for Dismissed Workers

Liste di mobilità (LM) is an Italian labour market programme targeted to dismissed workers. There is a ‘passive’ component granting monetary benefits to employees dismissed by firms larger than 15 employees, and an ‘active’ component providing an employment subsidy to any firm hiring workers from the LM. Eligibility duration varies with the worker’s age at dismissal. We exploit the variability of these provisions to evaluate the impact of extending the duration of eligibility on re-employment probabilities and wages over the 36 months subsequent to enrolment in the programme. The average treatment effect is identified via a Regression Discontinuity Design. A major negative impact emerges for workers aged 50 or more granted the monetary benefit.active labour market policies, regression discontinuity design

First Italian record of Paspalum notatum Flüggé (Poaceae) and its typification

In the present work the presence of Paspalum notatum Flüggé (Poaceae) in Italy was reported for the first time. It is a neophyte native to America, known for applications in phytoremediation. Its typification, ecology and invasiveness status are also presented

Relevamiento de costos directos de mano de obra: infraestructura vial

Práctica Supervisada (IC)--FCEFN-UNC, 2014Evalúa, analiza y releva las tareas que conforman la infraestructura vial del loteo Santina Norte, con el fin de determinar los costos directos de mano de obra y equipos que involucraron

The Underground Karst Laboratories of Bossea Cave: more than 50 years of collaborations and research

The Bossea Cave, Piedmont, is the first show cave of Italy, opened to the pubblic in 1874. The cavity develops for about 2800 m in the tectonic contact between the Middle Triassic carbonate rocks, and Permotriassic metavolcanics. A main water collector (Mora River) and several water supplies are present inside the cave. Different underground karst laboratories to study hydrogeology, climatology, radon activity and subterranean biology are located in the cave, managed by a multidisciplinary group from Struttura Operativa Bossea C.A.I., DIATI - Politecnico di Torino, and Biologia Sotterranea Piemonte - Gruppo di Ricerca, working together with ARPA Piemonte, ARPA Valle d’Aosta and INRiM. The first laboratory was built in 1969 by volunteers of Gruppo Speleologico Alpi Marittime; over the years, more than 60 sophisticated data logger and sensors were positioned in different touristic and non-touristic areas of the cavity, thanks to the contribution of volunteers, associations and public authorities. The hydrogeological research concerns both the flow hydrodynamics and the water geochemistry. Mora River is continuously monitored since 1983, and water sampling under different hydrodynamic conditions are carried out to chemical analyses. Tracing experiments from surface watercourses to spring waters have been done to understand the recharge area of the karst aquifer. Different environmental parameters are continously monitored in the cave, such as air circulation, air, rock and water temperature, relative humidity, air and water CO2 concentration. Rainfall and snowmelt are monitored too, above and inside the cave, evidencing the infiltration events. Radon (222Rn) derive from the radioactive 238U decay, spreading rapidly into the cave atmosphere and waters. The gas exchange dynamics between rock, water and atmosphere are studied, testing also different equipments for the radon monitoring. Subterranean biology investigations started in 1970, discovering over the years more than 125 different species of hypogeal fauna in the system (75 in the last 30 years), of which four endemics, and six new species to science. A strong contribution to the dissemination of the results was done by the operators, organizing training courses, activities for schools, environmental education, seminars, conferences, and online updates. The fundamental collaboration with the cave managers has allowed to carry out innovative research in this cavity, and to disseminate the discoveries to a not purely scientific or speleological pubblic. Research allows a greater knowledge of the peculiarities and problems of the system, considering the cave not only a tourist attraction, but an important ecosystem to preserve

Synthesis and structural analysis of halogen substituted fibril formation inhibitors of Human Transthyretin (TTR)

Transthyretin (TTR), a β-sheet-rich tetrameric protein, in equilibrium with an unstable amyloidogenic monomeric form is responsible for extracellular deposition of amyloid fibrils, is associated with the onset of neurodegenerative diseases, such as senile systemic amyloidosis, familial amyloid polyneuropathy and familial amyloid cardiomyopathy. One of the therapeutic strategies is to use small molecules to stabilize the TTR tetramer and thus curb amyloid fibril formation. Here, we report the synthesis, the in vitro evaluation of several halogen substituted 9-fluorenyl- and di-benzophenon-based ligands and their three-dimensional crystallographic analysis in complex with TTR. The synthesized compounds bind TTR and stabilize the tetramer with different potency. Of these compounds, 2c is the best inhibitor. The dual binding mode prevalent in the absence of substitutions on the fluorenyl ring, is disfavored by (2,7-dichloro-fluoren-9-ylideneaminooxy)-acetic acid (1b), (2,7-dibromo-fluoren-9-ylideneaminooxy)-acetic acid (1c) and (E/Z)-((3,4-dichloro-phenyl)-methyleneaminooxy)-acetic acid (2c), all with halogen substitutions

3dof representation of the acoustic measurements inside the Comunale-Pavarotti Theatre of Modena

The investigation of the acoustics inside the Italian Opera theatres has been undertaken by scholars in order to deepening their scientific studies on the architectural and cultural heritage. This paper deals with alternative ways of how to represent acoustic data, in particular by adding a 3dof representation of the impulse response (IR) besides the graphs related to the main acoustic parameters in line with the standard requirements. The 3dof screen shots have been undertaken by an overlay elaboration, showing the particular architectural components of the theatre that contribute to the early and late sound reflections. A brief introduction of the historical background related to the Comunale-Pavarotti theatre of Modena has been given to understand the architectural characteristics of the entire structure

Assessment of groundwater geochemistry and human health risk of an intensively cropped alluvial plain, NW Italy

Groundwater chemistry data play an essential role to identify the water quality status and assess the exposure to human health. Therefore, in the present research, combined approaches used to assess the geochemistry, sources of ions and human health risk in the groundwater of the Tronzano Vercellese. Moreover, a geographic information system (GIS) technique was applied to identify locations have the most risk to human health. The results of the present study show that the groundwater samples had sequence of Ca2þ>Mg2þ>Naþ>Kþ in cationic, HCO3 >SO4 >2>NO3 >Cl>F in anionic and Zn> Fe > Ba> Ni> Mn> Cu> Cr > As in metals abundance. The hydrogeochemical approaches indicate that the major ions chemistry was mainly controlled by the weathering of carbonate and silicate minerals, and ion-exchange reactions. Furthermore, statistical analysis reveals that the non-lithogenic origin was the primary sources of some elements (Mn, Zn, Ba, NO3 and Kþ) in the water samples. The hazard quotient (HQ) and hazard index (HI) were estimated to assess the risk to human health using the United States Environmental Protection Agency (USEPA) methods. Estimated HQ and HI values were higher for the child as compared to the adult and suggesting that the elements posed little hazard individually in the case of the child

Acoustic parameters of the Municipal Theatre of Piacenza shown on different ways of representation

The Italian Opera theatres are always subject to scientific studies that try to investigate as deeply as possible this historical heritage to preserve the architectural and acoustical information for future generations. This paper deals with two ways of data representations based on the outcomes derived from the variety of equipment used during the measurements. In particular, a methodology in line with standards and regulations has been introduced to representing the graphs of the main acoustical parameters; besides, a video of the real-time room impulse response (RIR) has been snapped with a few shots in place of visualizing the sound reflections that occurred inside the entire volume. After a brief description of the historical background of the Municipal theatre of Piacenza, the authors introduce the two methods just discussed to highlight the completeness of data representation regarding any type of room that is intended to be analyzed acoustically