Search results for "CCA"

showing 10 items of 2226 documents

Tecniche di gestione delle alberate in ambiente urbano: seminario a Gravina di Catania

2012

report of meeting

tecniche di gestione alberatte urbaneSettore AGR/09 - Meccanica Agraria
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Injury and Throwing Distance in Teenage Cyclist- Vehicle Crash

2016

The study of the injury caused by vehicle-teenage cyclist crash is presented in this paper. The results of the crash with three vehicles: sedan, SUV and Pick up are compared. Three different positions are analyzed: front, rear and lateral position. The injury on the cyclist head is examined by HIC criterion, in the way indicated by the rules. A comparison is done between the results of the simulations for Pick up, SUV and sedan, concluding that the injury of the head is more dangerous for Pick-up impact than SUV or the sedan, but only at greater speed than 40 km/h. Teenage cyclist is more likely to suffer an injury to the chest in rear impacts with the sedan, because 3 ms values remain abov…

teenage bicyclistSettore ING-IND/14 - Progettazione Meccanica E Costruzione Di Macchine3msSettore ING-IND/10 - Fisica Tecnica Industrialevehicle impactteenage bicyclist; vehicle impact;(AIS4+) injury; HIC; 3ms; throwing distance; biomechanics(AIS4+) injuryteenage bicyclist vehicle impact (AIS4+) injury HIC 3ms throwing distance biomechanicsHICbiomechanicsthrowing distance
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HIC evaluation in teenage cyclist – SUV accident

2015

The study of the crash between normal sedan and teenage cyclist was examined in previous paper, and is here continued analyzing the influence of the front part of the vehicle in the injury caused by the accident. The vehicle is a SUV, with high frontal part. No variation is executed on the model of the teenage cyclist and the bike. The position of the teenage cyclist regard to SUV is the same: three different positions are analyzed: front, rear and lateral position. The injury on the cyclist head is examined by HIC criterion, in the way indicated in the rules. Correlation HIC – AIS is used to calculate the lethality of the injuries. The work is arranged to calculate the damage to the chest …

teenage bicyclistSettore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineSettore ING-IND/09 - Sistemi Per L'Energia E L'Ambientesedan impactteenage bicyclist SUV impact sedan impact severe (AIS4+) injury HICteenage bicyclist; SUV impact; sedan impact; severe (AIS4+) injury; HICSUV impactHICsevere (AIS4+) injury
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Teenage cyclist - Pick up crash by multibody simulation; HIC evaluation and comparison with previous results

2016

The study of the injury caused by Pick-up vehicle-teenage cyclist crash is presented in this paper. The vehicle has high frontal part, in order to compare the results with those obtained previously in the sedan and SUV - teenage cyclist crash. No variation is executed on the model of the teenage cyclist and the bike. Three different positions are analyzed: front, rear and lateral position. The injury on the cyclist head is examined by HIC criterion, in the way indicated in the rules. Correlation HIC – AIS is used to calculate the lethality of the injuries. A comparison is made between the results of the simulations for Pick up, SUV and sedan, concluding that the injury of the head is more d…

teenage bicyclistSettore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineSettore ING-IND/10 - Fisica Tecnica Industrialeteenage bicyclist Pick-up impact severe (AIS4+) injury HIC biomechanicsPick-up impactHICbiomechanicsteenage bicyclist; Pick-up impact; severe (AIS4+) injury; HIC; biomechanicssevere (AIS4+) injury
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Biomechanics Parameters in the Vehicle-Cyclist Crash with Accident Analysis in Palermo

2014

The vehicle-bicyclist impact is studied in this paper. After analysis of the accidents in Palermo in the last years, the multibody simulation of the crash is executed by making use of Visual Nastran. Dummy, car and bicycle are those used in previous works. The attention is on a teenage cyclist, because the data on this argument are found in literature with difficulty. The impact is simulated at four different speeds until 50 km/h, with three different positions of the cyclist relative to the vehicle: frontal, side and rear. In particular the injury of the head is analyzed using the parameter HIC and the chest injury is analyzed by 3 ms criterion; the likelihood AIS 4+ is calculated, conclud…

teenage bicyclistSettore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineSettore MED/43 - Medicina Legalevehicle impact3ms criterionAccidentologyHICAccidentology teenage bicyclist vehicle impact severe (AIS4+) injury HIC 3ms criterionsevere (AIS4+) injury
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Biomechanics Parameters in Teenage Cyclist – SUV Accident and Comparison with the Pedestrian

2015

The study of the injury caused by the vehicle-teenage cyclist crash is presented in this paper. The vehicle is a SUV, with high frontal part, in order to compare the results with those obtained previously in the sedan- teenage cyclist crash and begin a study of the influence of the frontal shape of the vehicle. No variation is executed on the model of the teenage cyclist and the bike. Three different positions are analyzed: front, rear and lateral position. The injury on the cyclist head is examined by HIC criterion, in the way indicated in the rules. Correlation HIC – AIS is used to calculate the lethality of the injuries. The principal conclusion is done that the injury of the head is mor…

teenage bicyclistSettore ING-IND/14 - Progettazione Meccanica E Costruzione Di Macchinesedan impactteenage bicyclist SUV impact sedan impact severe (AIS4+) injury HICteenage bicyclist; SUV impact; sedan impact; severe (AIS4+) injury; HICSettore ING-IND/10 - Fisica Tecnica IndustrialeSUV impactHICsevere (AIS4+) injury
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A New Theoretical Approach on Teenage Cyclist-Vehicle Crash

2016

Data obtained in teenage cyclist impact against three vehicles (sedan, SUV and Pick Up), tested in previous works, are analyzed to verify the theoretical results by the coupling of momentum conservation principle and energy conservation principle. The speed of vehicle and thorax are compared with theoretical ones, obtaining an excellent agreement. Following the results found in the literature, particular emphasis is done on teenager cyclist thorax and head speeds, indicating that the cyclist speed can be theoretically until 1,41 times the impact speed, while greater values, until 2, are obtained in the simulations. A small slowing of the vehicle is found theoretically and in the simulations…

teenage bicyclist; vehicle impact; front vehicle shape; mass influence; theory of impactteenage bicyclistSettore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineSettore ING-IND/10 - Fisica Tecnica Industrialevehicle impactteenage bicyclist vehicle impact front vehicle shape mass influence theory of impactmass influencetheory of impactSettore ING-IND/16 - Tecnologie E Sistemi Di Lavorazionefront vehicle shape
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Temperamento materno ed infantile e legame di attaccamento.

2004

temperamento; coppia madre-bambino; attaccamentoattaccamentotemperamentocoppia madre-bambino
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High-Performance Lead-Acid Batteries Enabled by Pb and PbO2 Nanostructured Electrodes: Effect of Operating Temperature

2021

Lead-acid batteries are now widely used for energy storage, as result of an established and reliable technology. In the last decade, several studies have been carried out to improve the performance of this type of batteries, with the main objective to replace the conventional plates with innovative electrodes with improved stability, increased capacity and a larger active surface. Such studies ultimately aim to improve the kinetics of electrochemical conversion reactions at the electrode-solution interface and to guarantee a good electrical continuity during the repeated charge/discharge cycles. To achieve these objectives, our contribution focuses on the employment of nanostructured electr…

temperature testTechnologyMaterials scienceQH301-705.5template electrodepositionQC1-999Nanotechnology02 engineering and technology010402 general chemistryElectrosynthesis01 natural sciencesEnergy storageHigh C-rate cycling Lead nanowires Lead-acid battery Nanostructures cycling efficiency Temperature test Template electrodepositionOperating temperatureSettore ING-IND/17 - Impianti Industriali MeccaniciGeneral Materials ScienceBiology (General)Lead–acid batteryInstrumentationQD1-999Separator (electricity)Fluid Flow and Transfer Processeshigh C-rate cyclingNanoporouslead-acid batteryProcess Chemistry and TechnologyTPhysicsGeneral Engineeringlead nanowiresActive surface021001 nanoscience & nanotechnologyEngineering (General). Civil engineering (General)0104 chemical sciencesComputer Science ApplicationsChemistrySettore ING-IND/23 - Chimica Fisica ApplicataElectrodenanostructures cycling efficiencyTA1-20400210 nano-technologyApplied Sciences
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Thermo-Mechanical Behaviour of Flax-Fibre Reinforced Epoxy Laminates for Industrial Applications

2015

The present work describes the experimental mechanical characterisation of a natural flax fibre reinforced epoxy polymer composite. A commercial plain woven quasi-unidirectional flax fabric with spun-twisted yarns is employed in particular, as well as unidirectional composite panels manufactured with three techniques: hand-lay-up, vacuum bagging and resin infusion. The stiffness and strength behaviours are investigated under both monotonic and low-cycle fatigue loadings. The analysed material has, in particular, shown a typical bilinear behaviour under pure traction, with a knee yield point occurring at a rather low stress value, after which the material tensile stiffness is significantly r…

tensile propertieWork (thermodynamics)Materials scienceflax fibre compositemedicine.medical_treatmentcrimped unidirectional textilesComposite numbercrimped unidirectional textileflax fibre composite; tensile properties; crimped unidirectional textiles; damage; IR thermography; thermoelastic stress analysislcsh:TechnologyArticleSettore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineThermoelastic dampingUltimate tensile strengthmedicineGeneral Materials ScienceComposite materialSettore ING-IND/15 - Disegno E Metodi Dell'Ingegneria Industrialelcsh:Microscopylcsh:QC120-168.85tensile propertieslcsh:QH201-278.5lcsh:Tthermoelastic stress analysisStiffnessEpoxyTraction (orthopedics)IR thermographylcsh:TA1-2040visual_artThermographyvisual_art.visual_art_mediumlcsh:Descriptive and experimental mechanicslcsh:Electrical engineering. Electronics. Nuclear engineeringmedicine.symptomlcsh:Engineering (General). Civil engineering (General)lcsh:TK1-9971damageMaterials
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