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Metodi di analisi riconoscimento dei tunnidi allo stadio larvale
Get PDFUno dei periodi di vita più sensibili per ciascuna specie sono le prime fasi della vita (larvale e
giovanile). I tassi di sopravvivenza delle larve di pesci pelagici in queste fasi sono generalmente molto
bassi e soggetti a fluttuazioni, con conseguenze sul reclutamento delle nuove generazioni.
Il tonno rosso dell'Atlantico (ABT) (Thunnus thynnus, Linnaeus, 1758) è una delle specie più costose
al mondo. Alcuni studi hanno ipotizzato che le fluttuazioni del suo stock siano dettate da fattori
ambientali, in particolare nelle prime fasi della vita.
Anche il Tonno alalunga (Thunnus alalunga, Bonnaterre, 1788) e il tombarello (Auxis rochei, Risso,
1810) svolgono un ruolo ecologico essenziale come grandi predatori, sono obiettivi di pesca a livello
globale e hanno un'influenza fondamentale sulla struttura e sulla funzione delle comunità marine.
Pertanto, la loro gestione sostenibile è essenziale e dipende da una migliore comprensione della loro
storia di vita.
Dunque, appare necessario comprendere meglio la biologia e i processi di reclutamento di queste
specie, studio che può essere condotto analizzando le sue fasi larvali
Recensioni: La vita si sconta morendo. L’arte del vivere e del morire bene
Get PDFQuando Jean Baudrillard scriveva che "essere morti è un'anomalia impensabile" alludeva a uno scenario sociale di eliminazione o trasformazione della parola morte. Il
simbolo prende il posto del dato biologico e si costituisce in funzione del perpetuarsi della società stessa. Così, ricorda lo storico Philippe Ariès, le scienze sociali (e le loro antenate filosofiche) hanno sempre tentato di riconciliare la morte con la felicità. Cosa non facile, evidentemente. Non è questa, in effetti, la via che
intraprende Giorgio Macellari nel suo libro La vita si sconta morendo. L'arte del vivere e del morire bene. Semmai, sulla scia di riflessioni che si rintracciano anche nel
pensiero di Edgar Morin, sostiene che occorra trovare senso alla vita più che alla morte, proprio grazie a questa. La disciplina epicurea per cui se c'è la morte non ci siamo noi e viceversa è, in fondo, il miglior approccio all'argomento.
Poi però c'è da metterci del senso in questa vita, non basta scampare la morte finché si è vivi. Si può iniettare la grinta di un poeta per cui la morte non ci avrà mai vivi o
la disillusione di un altro poeta per cui la morte si sconta vivendo (a cui il titolo del libro fa eco); si può
inseguire la somiglianza con il dio, che laicamente è oggi la suprema- zia della tecnica, l'avvicinamento transumano all'immortalità; si può trovare senso nell'amore e nella
cura per sé e per gli altri; nel costruire, nel donare, nell'insegnare, nel progettare, nell'imparare
Laser effect on unstable particle decay
No full textThis paper is intended to briefly expose the effect of lasers on the decay processes of some unstable particles and present some of the important results we have obtaine
Development of the comprehensive analysis tools for the Supernova neutrino detectors
No full textA supernova explosion is a unique astrophysics event that would allow us to learn a lot about the conditions inside massive stars during their evolution and answer many physics questions about their nature. By combining the analysis of
the possible explosion in multiple next generation neutrino experiments, one could significantly improve the precision of determining the neutrino spectra parameters such as the mean energy and spectral index. In this contribution it is shown what one could achieve by doing a simultaneous fit of the energy spectra of JUNO and DUNE-like detectors. Preliminary results of the fit framework under development
are presented
A liquid argon scintillating bubble chamber for CEνNS reactor neutrino detection and dark matter search
No full textThe Scintillating Bubble Chamber is a novel detector based on 10 kg of LAr that is currently under construction at Fermilab (Chicago, USA). This detector is projected to reach a threshold of 100 eV and will take advantage of the excellent electromagnetic background discrimination characteristic of bubble chambers to measure neutrinos from nuclear reactors via coherent elastic neutrinonucleus scattering (CEνNS). The physics reach of the bubble chamber is studied for the cases of non-standard interactions through a new gauge boson Z, the weak mixing angle and the neutrino magnetic moment. A second bubble chamber will
be placed in SNOLAB to search for dark matter in the form of weakly interacting massive particles (WIMPs), for that reason an extensive background program is being developed to keep all backgrounds to less than 1 event per year
Estimation of muon induced background event rate of AMoRE-II
No full textThe AMoRE-II is the next phase of the AMoRE searching for the neutrinoless double beta decay of 100Mo isotopes. One of the dominant background sources in the underground experiments are cosmic muons. This study estimated the muon induced background rates with different shield configurations using Geant4
simulation packages. Details of the various shield configurations and their effects on vetoing of muons and muon induced background events are discussed
Procedure for biofilm formation on Microplastics for mesocosm experiments
Get PDFThe accumulation of Microplastics (MP) in the environment is continuous and persistent, posing a
concern for potential adverse effects on biota. Since environmental MPs can carry considerable
amounts of diverse substances (co-contaminants), the combined exposure to MPs and other
contaminants represents one of the most important aspects. The presence of a biofilm on MPs
surface can potentially change co-contaminant bioavailability to organisms. The aim of this technical
report is to provide the method to create a biofilm on the microplastic surface in order to carry out
mesocosm experiments useful to evaluate microplastic-associated biofilm influence on the
bioavailability of contaminants to model organisms
Do We Have a Culprit? An Association of Giant Cell Arteritis with Pulmonary Embolism
Get PDFGiant cell arteritis is the most common type of systemic vasculitis. An increased risk of venous thromboembolism has been described in these patients. We report the case of a 79-year-old woman with a history of polymyalgia rheumatica, who presented with left thoracic pain radiating to the neck and scapula plus temporal headache. She had no changes on physical examination, but work-up tests showed increased D-dimer levels and computed tomography pulmonary angiography revealed signs of a chronic/subacute embolism in the right inferior lobe. Anticoagulation with edoxaban was started after 5-day bridging with enoxaparin. Three weeks after the initial diagnosis the headache still persisted and she developed scalp tenderness. Giant cell arteritis was diagnosed and treated with prednisolone, with complete resolution of symptoms. Extensive diagnostic work-up was performed to identify an alternative cause of pulmonary thromboembolism; however, the investigations were negative. This case supports the hypothesis that this type of vasculitis could be related to the occurrence of pulmonary embolism
Phenazopyridine-Induced MethaemoglobinaemiaThe Aftermath of Dysuria Treatment
Get PDFIntroduction: Phenazopyridine is an over-the-counter urinary analgesic commonly used to alleviate the burning and urgency associated with lower urinary tract infections. Methaemoglobinaemia is an uncommon adverse effect of phenazopyridine use. We report a case of methaemoglobinaemia in a patient prescribed daily phenazopyridine to treat urethral and bladder irritation caused by a chronic indwelling Foley catheter.Case description: A 55-year-old female resident of a long-term acute care facility with a chronic Foley, tracheostomy and ventilator-dependent respiratory failure was observed to have generalized dusky skin and hypoxia. Pulse oximetry was reading in the high 80s despite administration of 100% FiO2. ABG revealed paO2 of 451, oxyhaemoglobin level 75% and methaemoglobin level 22%. Medication review indicated that the patient was prescribed phenazopyridine 400 mg TID for the previous 2 months. This medication was discontinued. Considering she was chronically taking mirtazapine, she can increase risk of serotonin syndrome should she be administered first-line treatment with methylene blue. Vitamin C was thus instead administered as a second-line agent. Serial ABGs showed a rapid decline in methaemoglobin levels and an increase in oxyhaemoglobin within 2 days.Discussion: Acquired methaemoglobinaemia is a rare adverse effect of treatment with phenazopyridine. This risk increases when drug dosage and duration exceed manufacturer specifications. Treatment typically includes cessation of the offending drug and administration of methylene blue in severe cases. A thorough medication reconciliation should be performed prior to methylene blue initiation, as patients taking serotonergic medications (for example, MAOIs, SSRIs, SNRIs, TCAs) are at increased risk of serotonin toxicity with co-administration of methylene blue. In these instances, ascorbic acid/vitamin C can be chosen as an alternative treatment agent.Conclusion: Work-up of refractory hypoxia should involve a thorough review of medications as even some over-the-counter drugs can cause the fatal side effect of methaemoglobinaemia. Treatment with vitamin C should be considered over methylene blue if serotonergic medications have been recently prescribed in order to avoid risk of serotonin syndrome
Lymphoplasmacytic Lymphoma with Only Lambda Light Chain Monoclonal Paraprotein Expression
Get PDFIntroduction: Lymphoplasmacytic lymphoma (LPL) is a rare low-grade B-cell neoplasm that accounts for approximately 2% of all haematological malignancies. Most patients have the clinical syndrome of Waldenstrom macroglobulinemia (WM), which is defined as LPL with an associated immunoglobulin M (IgM) serum monoclonal protein. Roughly 5% of LPL patients secrete non-IgM paraproteins (e.g., IgG, IgA, kappa, lambda) or are non-secretory. Case description: We report the case of a 41-year-old woman who was diagnosed with non-IgM LPL with lambda light chain monoclonal paraprotein production and normal serum immunoglobulin levels. The MYD88 L265P mutation was detected on fluorescence in-situ hybridization (FISH) analysis of the bone marrow. The patient underwent treatment with a combination of ibrutinib and rituximab. There was an initial response but she died 8 months after diagnosis. Discussion: Non-IgM LPL poses diagnostic and therapeutic challenges to clinicians as it is an exceptionally rare malignancy with a heterogeneous clinicopathological presentation and scarce literature. Among non-IgM LPL cases, those with lambda light chain production are even more rare. To the best of our knowledge, none have been reported to date. The addition of MYD88 L265P testing to the diagnostic armamentarium of non-IgM LPL cases is advisable for potential therapeutic reason