Efficient management of industrial electric vehicles by means of static and dynamic wireless power transfer systems

Industrial companies are moving toward the electrification of equipment and processes, in line with the broader energy transition taking place across the economy. Particularly, the energy efficiency and, consequently, the reduction of environmental pollution of intralogistics activities have become a competitive element and are now an actual research and development objective. A wireless power transfer is a contactless electrical energy transmission technology based on the magnetic coupling between coils installable under the ground level and a coil mounted under the vehicle floor, and it represents an excellent solution to decrease the demand for batteries by reducing vehicle downtimes during the recharge. This work aims to define a methodology to determine the optimal positioning of wireless charging units across the warehouse, both for static and dynamic recharging. To this aim, firstly, a mathematical model of the warehouse is proposed to describe transfers and storage/retrieval operations executed by the forklifts. Then, an integer linear programming problem is applied to find the best possible layout of the charging infrastructures. The optimal solution respects the energetic requirements given by the customer and minimizes the overall system cost. The proposed approach was applied to optimize the installation in a real-size warehouse of a tire manufacturing company. Several scenarios were computer generated through discrete event simulation in order to test the optimizer in different warehouse conditions. The obtained results show that integrated dynamic and static WPT systems ensure a constant state of charge of the electric vehicles during their operations

POMPE DI VUOTO PER IMPIANTI DI DEGASAGGIO D‘ACCIAIO

Da molti anni negli impianti di degasaggio degli acciai in vuoto sono impiegate due tipi di pompe, gli eiettori di vapore e le pompe meccaniche secche del tipo ROOTS. Gli eiettori di vapore sono trasportatori di gas ricco di polvere. Purtroppo l’esperienza industriale ha dimostrato che il trasporto di gas non filtrato produce dei depositi che diminuiscono la capacità aspirativa, obbliga a frequenti interventi di pulizia e allo smaltimento del residuo come rifiuto speciale pericoloso. La capacità aspirativa normalmente riscontrata più alta negli impianti ad eiettori di vapore, rispetto ad altre soluzioni poi di seguito illustrate, è dovuta al sovradimensionamento dell’impianto necessario a compensare la quantità di polvere contenuta nei gas e l’ostruzione dovuta ai depositi da essa generati. Le pompe meccaniche sono invece trasportatrici di volume di gas preventivamente filtrato e non sono influenzate dalle condizioni climatiche e dalla densità del gas, purché questo sia esente da polvere e sia sufficientemente freddo. A tal fine sono previsti dei sistemi molto efficienti d’abbattimento della polvere, come i cicloni, i filtri a maniche e gli scambiatori di calore. Le pompe meccaniche richiedono poco spazio e offrono la disponibilità istantanea del vuoto. Grazie alla filtrazione preventiva delle polveri contenute nei gas, esse mantengono le loro caratteristiche costanti nel tempo e hanno un costo operativo molto più basso rispetto agli altri sistemi di degasaggio. La potenza elettrica installata, i consumi d’energia e dei fluidi sono inferiori rispetto a quanto richiesto dalla tecnologia degli eiettori di vapore, come pure la manutenzione richiesta

effectiveness of switching therapy from complexing protein containing botulinum toxin type a to a formulation with low immunogenicity in spasticity after stroke a case report

Objective: some patients receiving botulinum toxin type a therapy develop immunological resistance due to the production of neutralizing antibodies against the neurotoxin, thus partially or completely reducing the therapeutic effect. Case report: We report here neurophysiological and clinical findings for a 58-year-old man treated with botulinum toxin type A for spasticity after ischaemic stroke, who became a secondary non-responder patient. subsequent treatment with a different preparation of botulinum toxin type A had a great therapeutic effect on his spasticity. the muscles injected and the dosages were the same for each treatment, but evaluation with the Modified Ashworth Scale after treatment with the second preparation showed a reduction of approximately 2 points compared with the first examination. The clinical results were also supported by extensor digitorum brevis testing of the right muscle, which showed a reduction in compound muscle action potential, whereas it was unchanged in the non-injected muscle. No side-effects were reported, and after 1 year of treatment with this formulation clinical benefits were still evident. Conclusion: the neurophysiological and clinical results obtained in this patient suggest that switching therapy from a complexing protein-containing product to a product potentially free of complexing proteins, which has low immunogenicity, may be a viable therapeutic option in secondary non-responder patients

Apolipoprotein E (APOE) polymorphism influences serum APOE levels in Alzheimer's disease patients and centenarians.

Vascular factors may play a role in the etiology of Alzheimer’s disease (AD) and increased serum apolipoprotein E (APOE) levels in AD could be of interest, as APOE concentration is associated with vascular disease. Aims of this study were to evaluate the inluence of APOE genotype on serum APOE levels, and, secondly, to study serum APOE concentrations in relation to age and AD. APOE genotypes, serum total cholesterol, LDL cholesterol, HDL cholesterol, total cholesterol/HDL cholesterol ratio, triglycerides, and serum APOE were performed on 52 healthy centenarians, 49 AD patients, 45 age-matched controls, and 72 young healthy adults. In all study population a significant trend in reduction of serum APOE levels from APOE E2- to E4 carriers was observed.The diffeerence in serumAPOE levels amonga ge groups signi¢cantly decreased in E4 carriers only, includingH DL cholesterol; no significant differences between AD patients and age-matched controls were found. In these highly selected populations, APOE genotype distribution strongly influences serum APOE concentration, not suggesting, at present, a possible role as a biochemical marker for AD, but only as a putative longevity factor

Un impianto innovativo nella filiera del recupero della scoria da forno elettrico

Nel presente lavoro viene presentato il sistema Slag-Rec per il trattamento della scoria EAF, che è statorealizzato presso MFL, Liezen (Austria) ed è attualmente in fase di installazione ed avviamento presso laacciaieria ASO, Ospitaletto (Brescia). Il sistema permette di realizzare la granulazione a secco della scoria,eliminando il contatto della stessa con acqua di raffreddamento, attuando allo stesso tempo unraffreddamento controllato e ripetibile in funzione del tipo di scoria da trattare

Seguridad del Paciente Oncológico : Desarrollos Estratégicos

Los errores en el tratamiento quimioterápico pueden tener consecuencias graves para los pacientes debido al estrecho margen terapéutico de los antineoplásicos; la mayor parte de los errores de medicación están sujetos al error humano. El objetivo de este trabajo es describir las estrategias utilizadas por el Sanatorio Güemes para mejorar la seguridad en el tratamiento de pacientes oncológicos sobre la base de desarrollos de recursos electrónicos y estandarización de procedimientos. La implementación de estas estrategias representó una disminución en la probabilidad de error con un cambio en el estándar de calidad y seguridad de atención al paciente, logrando además optimización de recursos y tiempos.Sociedad Argentina de Informática e Investigación Operativ

Propagating Torsion in 3D-Gravity and Dynamical Mass Generation

In this paper, fermions are minimally coupled to 3D-gravity where a dynamical torsion is introduced. A Kalb-Ramond field is non-minimally coupled to these fermions in a gauge-invariant way. We show that a 1-loop mass generation mechanism takes place for both the 2-form gauge field and the torsion. As for the fermions, no mass is dynamically generated: at 1-loop, there is only a mass shift proportional to the Yukawa coupling whenever the fermions have a non-vanishing tree-level mass.Comment: 13 pages, latex file, no figures, some corrections adde