1,356,444 research outputs found

    Nè jus sanguinis né jus soli. A Malta (e non solo) vige lo jus pecuniae

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    Marilena Giannetti e Elena Paparella si occupano degli “immigrant investor programs”, cioè dei programmi che permettono di comprare lo status di cittadino, pagando un prezzo fissato dai paesi che li adottano (tra i quali vi è Malta, membro dell’UE). Giannetti e Paparella si soffermano sulle implicazioni morali, economiche e di tutela dei diritti che ha la singolare coesistenza, in molti paesi, di un libero mercato dei passaporti (per i ricchi ) e di crescenti barriere all’accesso (per i più poveri)

    On a salt fingers model

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    We consider the model introduced in Paparella and von Hardenberg (2014), that consists in the homogeneous boundary value problem for a system of nonlinear degenerate parabolic equations. We prove the existence of global weak solutions and discuss their stability and asymptotic properties

    Safety and quality assurance in the domestic swine production chain

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    The Regulation (EU) No 2017/625 is a milestone in the official controls regulations, as it provides key changes in all the activities performed to ensure the compliance with food and feed law, as well as with rules on animal health and welfare, plant health and plant protection products. The application of this Regulation in the meat industry involves reasonable approaches and new concepts to obtain a risk reduction that should be at least equal to conventional meat factories that apply the traditional meat inspection. Moreover, it pays more attention to non-compliance with good hygiene practices in slaughterhouses as a guarantee of both product quality and public health. The existing ante- and post-mortem inspections do not enable detection of the main bacterial and parasitic foodborne hazards, such as Salmonella spp., Yersinia enterocolitica, Trichinella spp. and Toxoplasma gondii. In pig slaughtering, it has been demonstrated that palpation and incision during post-mortem inspection can mediate bacterial cross-contamination, and therefore they should be limited to suspect pigs, identified through the food chain information and/or ante- or post-mortem visual observation of relevant abnormalities. Possible alternative methods could be based on validated laboratory tests able to detect the most frequent biological hazards in the pork production chain. In addition, a high hygiene degree is recommended to minimize carcass contamination throughout the slaughter process. The aim of this study is the description of the main official control activities, as well as the mandatory requirements for the slaughter manager in an Italian medium-scale slaughterhouse, according to the current European legislation. In particular, the microbiological criteria (i.e., aerobic colony count, Enterobacteriaceae and Salmonella spp.) set by Commission Regulation (EC) No 2073/2005 and further amendments, have been evaluated on pig carcasses tested at the end of the slaughter line from four different sites, according to ISO 17604:2003. Another task of this chapter is the description of the sampling procedure of domestic swine carcasses susceptible to Trichinella spp. infestation and the reference methods of analysis according to Commission Regulation (EU) No 1375/2015. About the last feature, this chapter reports also the accreditation procedure and the requirements for its maintenance applied by the investigated medium-scale slaughterhouse, according to the global accreditation system

    Dynamics of (4+1)-Dihedrally Symmetric Nearly Parallel Vortex Filaments

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    We give a detailed analytical and numerical description of the global dynamics of 4+1 points interacting through the singular logarithmic potential and subject to the following symmetry constraint: at each instant 4 of them form an orbit of the Klein group D 2 of order 4. The main device in order to achieve our results is to use a McGehee-like transformation introduced in (Paparella and Portaluri in Global dynamics of the dihedral singular logarithmic potential and nearly parallel vortex filaments, 2011) for a problem analogous to the present one. After performing this transformation in order to regularize the total collision, we study the rest-points of the flow, the invariant (stable and unstable) manifolds and we derive some interesting information about the global dynamics

    Il sapere pedagogico. Temi e piste di ricerca.

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    Lo sviluppo di 50 anni di ricerca educativ

    Il progetto Bes

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    Un progetto pilota finalizzato all'accessoall'universo digitale da parte di disabili mentali adulti . Viene elaborato un dispositivo ermeneutico - quello di drive ambientale - che permette di ipotizzare gestori digitali di operazioni gestibili dal disabile e tali da garantire prestazioni di livello superiore. In particolare il progetto realizza un sistema che viene utilizzato sia all'interno di laboratori di terapia occupazionale digitale, sia per realizzare uno sportello aperto al pubblico e attraverso il quale il disabile svolge attività destinate a facilitare l'esercizio della cittadinanza attiva da parte di sogetti normali

    Innovative Strategies for Preventing Escherichia Coli Contamination: Challenges and Recent Advances in Food Safety

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    Escherichia coli (E. coli) is a major foodborne pathogen, contributing to widespread health concerns and numerous foodborne illness incidents globally. This review examines the emergence and impact of pathogenic E. coli strains, particularly Shiga toxin-producing E. coli, which is responsible for severe gastrointestinal diseases, including diarrhea (often bloody), abdominal cramps, and vomiting. In some cases, particularly with strains like E. coli O157:H7, infections can escalate into Hemolytic Uremic Syndrome (HUS), a life-threatening condition characterized by acute renal failure, thrombocytopenia, and hemolytic anemia. Key sources of contamination, such as meat, dairy, and fresh produce, are analyzed, considering how improper handling, cross-contamination, and inadequate temperature control contribute to the spread of this pathogen. Prevention strategies, including thermal and non-thermal treatments, antibiotics, bacteriocins, essential oils, and bacteriophages, are discussed. Additionally, the growing challenge of Antimicrobial Resistance (AMR) in E. coli strains is considered, as well as the need for alternative therapeutic approaches. Finally, this review explores advancements in food safety regulations and surveillance systems, emphasizing the importance of harmonized testing methods to minimize risks. Based on the evidence given by the scientific literature, food safety practices need to be innovated to mitigate E. coli contamination, particularly to prevent severe health outcomes such as HUS
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