Search results for "Ultra"

The electron and Occam's razor

2017

This paper introduces a Zitterbewegung (ZBW) model of the electron by applying the principle of Occam’s razor to Maxwell’s equations and by introducing a scalar component in the electromagnetic field. The aim is to explain, by using simple and intuitive concepts, the origin of the electric charge and the electromagnetic nature of mass and inertia. A ZBW model of the electron is also proposed as the best suited theoretical framework to study the structure of Ultra-Dense Deuterium (UDD), the origin of anomalous heat in metal–hydrogen systems and the possibility of existence of “super-chemical” aggregates at Compton scale.

Electron structure, ultra-dense hydrogen and low energy nuclear reactions

2019

In this paper, a simple Zitterbewegung electron model, proposed in a previous work, is presented from a different perspective based on the principle of mass- frequency equivalence. A geometric- electromagnetic interpretation of mass, relativistic mass, De Broglie wavelength, Proca, Klein- Gordon, Dirac and Aharonov- Bohm equations in agreement with the model is proposed. A non-relativistic, Zitterbewegung interpretation of the 3.7 keV deep hydrogen level found by J. Naudts is presented. According to this perspective, ultra-dense hydrogen can be conceived as a coherent chain of bosonic electrons with protons or deuterons located in the center of their Zitterbewegung orbits. This approach sug…

PAIN RELIEF AND FUNCTIONAL RECOVERY OVER A SIX-MONTH PERIOD AFTER INTRA - ARTICULAR INJECTION WITH SODIUM HYALURONATE ( MW 1500-2000KDA) IN OSTEOARTH…

2014

MR3428804 Reviewed Benci, Vieri(I-PISA); Luperi Baglini, Lorenzo(A-WIENM) Generalized functions beyond distributions. (English, Arabic summary) Arab.…

2016

Generalized functions are here intended to mean a particular class V˜(Ω) of ultrafunctions, i.e. functions defined on a non-Archimedean field that extends a class V(Ω) of L2(Ω)-integrable continuous functions. The particular class of ultrafunctions is selected by some desiderata to obtain the properties sufficient for applications to PDE. One of these is to maintain the locality property of a local operator defined on V(Ω) when it is extended to V˜(Ω). This fact is related to the possibility of defining a sort of orthogonality between "Delta ultrafunctions''. The results are applied to the definition of the derivative operator, the definite integral and to associate an ultrafunction to ever…

EFFETTI DELLA TERAPIA CON DIRECT ACTING ANTIVIRALS (DAAS) SUI PARAMETRI ECOGRAFICI DI IPERTENSIONE PORTALE

2017

Obiettivi dello studio: Tra gli end point della terapia antivirale con DAAs nella cirrosi HCV (LCHCV) oltre all' eradicazione del virus vi sono: la regressione della fibrosi e dell’ipertensione portale. Abbiamo valutato in pazienti LCHCV e risposta sostenuta (SVR) alla terapia con DAAs il comportamento dell’AST to Platelet Ratio Index (APRI) (marker indiretto di fibrosi) e di due segni ecografici di ipertensione portale: calibro della vena porta (cVP) e diametro longitudinale della milza (DLM). Materiali: 98 pazienti con LCHCV,al Baseline (BL) a fine terapia (FT) e tre mesi (PostT3) e 9 mesi dopo la fine della terapia (PostT9) eseguivano i test di funzionalità epatica e la conta piastrinica…

Effects of direct-acting antiviral therapy (DAAS) on the ultrasound parameters of portal hypertension

2018

Background:Among the endpoints of antiviral therapy with DAAs in HCV related liver cirrhosis (LC-HCV) in addition to the eradication of the virus there are the regression of fibrosis and of portal hypertension. For this reason we evaluated in LC-HCV patients and sustained virological response (SVR) to DAAs therapy the behavior of the AST to Platelet Ratio Index (APRI) (indirect marker of fibrosis) and of two ultrasound (US) signs of portal hypertension: caliber of the portal vein (cPV ) and longitudinal diameter of the spleen (LDS) Methods:132 patients with LC-HCV at baseline (BL), at three months (PostT3) and 12 months (PostT12) after the end of therapy, performed liver function tests and …

PRESENTAZIONE ECOGRAFICA DELL’EPATOCARCINOMA: ESPERIENZA DI UN SINGOLO CENTRO NELL’ARCO DI TRE DECENNI

2019

Valutare i cambiamenti della presentazione ecografica (US) degli epatocarcinomi (HCC) diagnosticati presso la nostra UO di Medicina Interna in tre periodi:1993-98, 2003-2008,2013-18. Il Gruppo 1 (G1) (1993-1998) comprendeva 174 HCC, il Gruppo 2 (G2) (2003-08) 96, il Gruppo 3 (G3) (2013-2018) 102. Sono stati registrati età, sesso, markers HBV, HCV, uso di alcol, alfafetoproteina (AFP), test di funzionalità epatica, autoanticorpi, ferritinemia. La diagnosi di HCC in G2 e G3 è stata posta secondo le linee guida EASL, in G1 con istologia o citologia nel 40%, nel resto con multiple tecniche di imaging concordanti (ecografia, TC, TC con lipiodol, angiografia), livelli sierici di AFP>200 ng/ml.…

PREVALENCE OF LIVER STEATOSIS AND FIBROSIS AND RELIABILITY OF ULTRASOUND IN DETECTING NAFLD IN OBESE PATIENTS

2018

Background: Non-alcoholic fatty liver disease (NAFLD) is the most frequent chronic liver disease in Western countries, and in particular in obese patients the prevalence is higher than in general population. It has a large clinical spectrum, ranging from simple steatosis to steatohepatitis (NASH) and cirrhosis. Aim of the study: To evaluate in obese patients who underwent bariatric surgery in the last 3 years: 1) the histological prevalence and severity of liver steatosis (LS) and fibrosis; 2) the reliability of ultrasound (US) in diagnosing steatosis. Patients and methods: We reviewed preoperative liver US and intraoperative liver biopsy results in 57 bariatric surgery patients (age 42 ± 1…

MODIFICAZIONI ECOGRAFICHE DELLA LINFADENOPATIA DELL’ILO EPATICO DOPO ERADICAZIONE DELL’HCV CON DIRECT-ACTING ANTIVIRALS

2019

A) Valutare le modificazioni ecografiche (US) dei linfonodi (LN) dell’ilo epatico in pazienti con epatopatia cronica (EC) correlata al virus dell’epatite C (HCV) e Sustained Virological Responders (SVR) alla terapia con i Direct-Acting Antivirals (DAAs); B) rilevare i fattori predittivi correlati con la scomparsa di LN. Abbiamo studiato 177 pazienti, trattati con DAAs, arruolati consecutivamente tra il Gennaio 2015 e il Dicembre 2016, con un follow-up dell’SVR di 24 mesi (SVR24) a Dicembre 2018; erano esclusi i pazienti con storia o insorgenza di epatocarcinoma nel follow-up. I LN erano definiti ingranditi (LN+) se il diametro maggiore era >1 cm. Al baseline (BL) registravamo: età, sesso…

The renal resistive index: is it a misnomer?

2015

Progress in digital ultrasound technology and diffusion of Doppler ultrasound evaluation of the kidney enable a widespread non-invasive evaluation of renal haemodynamics. Initially most attention has been paid to the study of extraparenchymal renal arteries, mainly to detect renovascular disease. However, this approach has low reproducibility and accuracy. Therefore, interest has gradually moved towards the duplex evaluation of intrarenal anatomy, where the best and most reliable signals are obtained from the large segmental or interlobar arteries that run directly towards the transducer. Among the sonographic parameters used in the last decade, great emphasis has been placed on the intrare…