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Quality Problems in Waters Used for Drinking Purposes in Italy

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Biomedical and Environmental Sciences 1991年第4期4卷 339-347页

作者： E.FUNARI.A.BASTONE P.BOTTONI D.DEDONNO l.donati Department of Environmental Hygiene National Institute of HealthDepartment of Environmental Hygiene National Institute of HealthDepartment of Environmental Hygiene National Institute of HealthDepartment of Environmental Hygiene National Institute of Health

With a grant from the Italian Ministry of the Environment, the National Institute of Health (Istituto Superiore di Sanita) promoted and coordinated some activities aimed at determining the extent and the intensity of contamination of waters used for human consumption by some chemical agents, and describing causes and modalities of contamination and human health implications. The chemical agents examined were herbicides, nitrates, trihalomethanes, asbestos, manganese and fluoride. In this paper a first nationwide picture of these problems is reported.

关键词： Quality Problems in Waters Used for Drinking Purposes in Italy

Towards a new frontier in wrist rehabilitation:The traction-free posture orthosis

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Medicine in Novel Technology and Devices 2024年第3期23卷 136-138页

作者： Paolo Boccolari Roberto Tedeschi Danilo donati Azienda Ospedaliero Universitaria di Modena PoliclinicoItaly Department of Biomedical and Neuromotor Sciences Alma Mater StudiorumUniversity of BolognaBolognaItaly Physical Therapy and Rehabilitation Unit Policlinico di ModenaModenaItaly Clinical and Experimental Medicine PhD Program University of Modena and Reggio EmiliaModenaItaly

This study presents the novel Traction-Free Posture Orthosis,designed to address wrist stiffness without the use of traditional traction *** orthosis employs a velcro system to stabilize the position of the wrist in flexion or extension,thereby avoiding the compression and rotational disadvantages associated with non-perpendicular traction ***-shaped cuts in the brace allow for plastic material flexibility,ensuring movement and *** is the absence of a traction strap,which traditionally reduces the support surface and could create pressure points leading to patient discomfort or treatment *** design facilitates a wide contact surface with the hand,optimal load distribution,and the capacity to adjust dual traction straps independently,adapting to the natural wrist *** single-piece base orthosis offers a stable,cost-effective,and patientfriendly alternative to conventional ***,patients with stiffness in both flexion and extension may require two separate orthoses,potentially increasing costs and patient ***,the Traction-Free Posture Orthosis represents an innovative step in wrist rehabilitation,providing a quick-to-construct,easy-to-wear solution with the promise of enhanced patient compliance and comfort.

关键词： Wrist rehabilitation Orthotic devices Hand therapy Occupational therapy

The Mysterius Fate of Stars (Past, Present and Future of the Universe)

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Journal of Applied Mathematics and Physics 2024年第4期12卷 1308-1320页

作者： Gianni donati Associazione Italiana di Ingegneria Chimica Milano Italy

The research on the collapse of stars, due to Gravity, after the depletion of the fusion fuel, engaged a number of famous guys as Eddington, Chandrasekhar, Schwarzschild and Oppenheimer in the years around 1910-1050. During this period, Einstein was writing his field equation of general relativity (1923), Fermi, in a famous letter to Pauli, proposed the neutrino in beta decay theory (1930), Chadwick found the neutron, that granted him the Nobel price (1935) and Hubble (1929) proved that the Universe was expanding. As a result of that golden age, we remain with a lot of unsolved questions, due to the poor knowledge of the nature of the strong Nuclear Interaction of Gravity that controls the whole Universe. We have made an investigation on the nature of nuclear bond and gravitational attraction on the basis of available data and as a follow-up of Fermi famous research on Neutrino. Using this background, we hope to be able to explain or give some light to the evolution of stars, to the strange objects and phenomena captured or perceived by astronomers in the sky and speculated by theoretical physicists.

关键词： Physics Gravity Astrophysics Grand Unified Theory Nuclear Bond Neutrino Particle Physics

Modeling of recrystallization behaviour of AA6XXX aluminum alloy profile during extrusion process

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Transactions of Nonferrous Metals Society of China 2024年

作者： Marco Negozio Antonio Segatori Riccardo Pelaccia Barbara Reggiani Sara Di Donato lorenzo donati DIN Department of Industrial Engineering – University of Bologna University of Parma-Department of Engineering and Architecture， Parco Area delle Scienze Hydro， Innovation and Technology InterMech-MO.RE – University of Modena and Reggio Emilia DISMI Department of Sciences and Methods for Engineering， University of Modena and Reggio Emilia

An innovative approach was introduced for the development of a AA6063 recrystallization model. This method incorporated a regression-based technique for the determination of material constants and introduced novel equations for assessing the grain size evolution. Calibration and validation of this methodology involved a combination of experimentally acquired microstructural data from the extrusion of three different AA6063 profiles and results from the simulation using the Qform Extrusion UK finite element code. The outcomes proved the agreement between experimental findings and numerical prediction of the microstructural evolution. The trend of the grain size variation based on different process parameters has been accurately simulated， both after dynamic and static recrystallization， with an error rate of less than 25% in almost the whole sampling computations.

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Modeling of recrystallization behaviour of AA6xxx aluminum alloy during extrusion process

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Transactions of Nonferrous Metals Society of China 2024年第10期34卷 3170-3184页

作者： Marco NEGOZIO Antonio SEGATORI Riccardo PElACCIA Barbara REGGIANI Sara Di DONATO lorenzo donati University of Parma-Department of Engineering and Architecture Parco Area delle Scienze181/A43124 ParmaItaly Hydro Innovation and TechnologyMyrkärrsvägen 161231 FinspångSweden DISMI Department of Sciences and Methods for Engineering University of Modena and Reggio EmiliaVia Amendola 242122Reggio EmiliaItaly InterMech-MO.RE–University of Modena and Reggio Emilia Piazzale Europa 1Reggio Emilia 42124Italy DIN Department of Industrial Engineering–University of Bologna Viale Risorgimento 240136BolognaItaly

An innovative approach was introduced for the development of a AA6063 recrystallization *** method incorporated a regression-based technique for the determination of material constants and introduced novel equations for assessing the grain size *** and validation of this methodology involved a combination of experimentally acquired microstructural data from the extrusion of three different AA6063 profiles and results from the simulation using the Qform Extrusion UK finite element *** outcomes proved the agreement between experimental findings and numerical prediction of the microstructural *** trend of the grain size variation based on different process parameters was accurately simulated,both after dynamic and static recrystallization,with an error of less than 25% in almost the whole sampling computations.

关键词： recrystallization simulation aluminum alloy extrusion finite element method microstructure prediction

On the functions of astrocyte-mediated neuronal slow inward currents

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Neural Regeneration Research 2024年第12期19卷 2602-2612页

作者： Balázs Pál Department of Physiology Faculty of MedicineUniversity of DebrecenDebrecenHungary

Slow inward currents are known as neuronal excitatory currents mediated by glutamate release and activation of neuronal extra synaptic N-met hyl-D-aspartate receptors with the contribution of *** events are significantly slower than the excitatory postsynaptic *** of slow inward currents are determined by seve ral factors including the mechanisms of astrocytic activation and glutamate release,as well as the diffusion pathways from the release site towards the extra synaptic recepto *** are stimulated by neuronal network activity,which in turn excite neurons,forming an astrocyte-neuron feedback *** as a consequence of brain edema,astrocytic swelling can also induce slow inward currents under pathological *** is a growing body of evidence on the roles of slow inward currents on a single neuron or local network *** events often occur in synchro ny on neurons located in the same astrocytic *** synchronization of neuronal excitability,slow inward currents also set synaptic strength via eliciting timing-dependent synaptic *** addition,slow inward currents are also subject to non-synaptic plasticity triggered by long-la sting stimulation of the excitatory *** note,there might be important regionspecific differences in the roles and actions triggering slow inward *** greater networks,the pathophysiological roles of slow inward currents can be better understood than physiological *** inward currents are identified in the pathophysiological background of autism,as slow inward currents drive early hypersynchrony of the neural *** inward currents are significant contributors to paroxysmal depolarizational shifts/interictal *** events are related to epilepsy,but also found in Alzheimer's disease,Parkinson's disease,and stroke,leading to the decline of cognitive *** with features overlapping with slow inward currents(excitatory,N-methyl-Dasp

关键词： astrocyte cortical spreading depolarization gliotransmission glutamate neural synchronization NMDA receptor paroxysmal depolarizational shift slow inward current

On calculating glacial isostatic adjustment

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Geodesy and Geodynamics 2024年第5期15卷 441-452页

作者： l.M.Cathles Cornell University IthacaNY 14853USA

Modeling the earth's fluid and elastic response to the melting of the glaciers of the last ice age is the most direct way to infer the earth's radial viscosity ***,we compare two methods for calculating the viscoelastic response to surface *** one,the elastic equation of motion is converted to a viscoelastic equation using the Correspondence *** the other,elastic deformation is added to the viscous flow as isostatic adjustment *** two modeling methods predict adjustment histories that are different enough to potentially impact the interpretation of the observed glacial isostatic adjustment(GIA).The differences arise from buoyancy and whether fluid displacements are subjected to hydrostatic *** methods agree if they use the same equations and boundary *** origin of the differences is determined by varying the boundary conditions and pre-stress application.

关键词： Glacial isostatic adjustment Viscoelastic normal modes Hydrostatic pre-stress Elastic buoyancy Correspondence principle

Effect of radiative loss mechanisms on FIR thermometric parameters of Nd^(3+)-doped lithium tellurite glasses

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Journal of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： C.Y.Morassuti A.P.l Silva l.A.O.Nunes S.M.lima l.H.C.Andrade Optical and Photothermal Spectroscopy Group(GEOF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Archer Information Technology Center Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of Physics of São Carlos University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tellurite glasses are promising materials for thermometers based on the fluorescence intensity ratio(FIR)***,at high Nd^(3+)concentrations,energy transfer(ET)processes such as optical reabsorption and cross-relaxation can affect the Nd^(3+)emission,which has been little explored in the ***,the present work investigated the use of Nd^(3+)-doped tellurite glass(samples doped with Nd^(3+)at 0.2 mol%,0.5 mol%,2.0 mol%,and 4.0 mol%)in fluorescence thermometers,in the temperature range from 299 to 371 *** results indicate a strong dependence of the FIR parameters on the Nd^(3+)concentration,due to changes in the emission band profiles caused by optical reabsorption of the Nd^(3+)emissions and cross-relaxation processes.A decrease of the relative sensitivity of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for samples doped with higher amounts of Nd^(3+).The maximum relative sensitivity at 299 K is 3.00%/K,which is the highest value among the reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tellurite glass Fluorescence intensity ratio Optical thermometry Judd-Ofelt Rare earths

Non-adhesive and adhesive contacts of an elastic quarter-or eighth-space with freely sliding sides

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Friction 2024年第9期12卷 2052-2063页

作者： Qiang lI Valentin l.POPOV Technische Universität Berlin Berlin 10623Germany

The contact of an elastic quarter-or eighth-space is studied under the condition that the movement of the side surface of the quarter-space is constrained:It can slide freely along the plane of the side surface but its normal movement is blocked(for example,by a rigid wall).The solution of this contact problem can be easily achieved by additionally applying a mirrored load to an elastic ***-adhesive contact and the Johnson–Kendall–Roberts(JKR)-type adhesive contact between a rigid sphere and an elastic quarter-space under such a boundary condition is numerically simulated using the fast Fourier transform(FFT)-assisted boundary element method(BEM).Contacts of an elastic eighth-space are investigated using the same *** on the position of the sphere relative to the side edge,different contact behavior is *** the case of adhesive contact,the force of adhesion first increases with increasing the distance from the edge of the quarter-space,achieves a maximum,and decreases further to the JKR-value in large distance from the *** enhancement of the force of adhesion compared to the half-space-contact is associated with the pinning of the contact area at the *** provide the maps of the force of adhesion and their analytical approximations,as well as pressure distributions in the contact plane and inside the quarter-/eighth-space.

关键词： quarter-space eighth-space adhesion edge effect boundary element method(BEM)