47 research outputs found
Genetic variation and phylogenetic relationships in some dog breeds, Italian wolf (Canis lupus italicus) and in red fox (Vulpes vulpes) based on microsatellite DNA polymorphisms
No full textFeasibility study of a passive pneumatic exoskeleton for upper limbs based on a mckibben artificial muscle
No full textExoskeletons are wearable structures or systems designed to enhance human movement and to improve the wearer’s strength or agility, providing auxiliary support aimed at reducing efforts on muscles and joints of the human body. The aim of this work is to discuss on the feasibility of a new passive upper limb exoskeleton, based on the use of pneumatic artificial muscles, and characterized by extreme lightness, cheapness, and ease of use. A broad overview of the state of the art on current exoskeletons is introduced. Then the concept of the new device is presented, and different transmission architectures between pneumatic muscle and limb are discussed. The study demonstrates the potential effectiveness of such a device for supporting an operator in heavy work condition
1.55 μm Optical short pulse generation at 10-GHz repetition rate, using a mode-Locked Hybrid Distributed Bragg Reflector (ML-HDBR) Laser Source
No full textA passive upper-limb exoskeleton for industrial application based on pneumatic artificial muscles
No full textIn recent years, exoskeletons are increasingly spreading into the industrial manufacturing sector to improve productivity and to reduce the incidence of work-related musculoskeletal diseases. The aim of this paper is to present a 2 degrees of freedom (DoF) passive upper-limb exoskeleton, consisting of two McKibben pneumatic artificial muscles (PAMs), and used for assisting workers during activities that require them to keep their hands in a sustained position over the head for a long time. Simulations are performed to test two different commercial PAMs and two different designs of the transmission system used to convey the traction force exerted by the pneumatic muscles to the limb; then the results are discussed. A preliminary assembly of the exoskeleton is also presented. The study confirms that PAMs can be used to realize a passive upper-limb exoskeleton for industrial application and that appropriate working space can be obtained with an accurate design of the transmission system
Gordius villoti (Nematomorpha) life cycle in relation with caddis fly larvae
No full textThe relationships between Gordius villoti Rosa and Allogamus auri-collis Pictet larvae are described. The horsehair worms and host life cycles have been investigated in laboratory and field conditions and aspects of their morphology and behaviour are discussed
Phylogenetic relationships of 10 canine italian breeds (canis familiaris) and wild canids (vulpes vulpes, canis lupus italicus) by microsatellite and mithocondrial polymorphisms
No full text
Clinical Data of Neonatal Systemic Thrombosis
No full textObjective To evaluate clinical data and associated risk conditions of noncerebral systemic venous thromboembolism (VT), arterial thromboembolism (AT), and intracardiac thromboembolism (ICT) in neonates. Study design Data analysis of first systemic thromboembolism occurring in 75 live neonates (0-28 days), enrolled in the Italian Registry of Pediatric Thrombosis from neonatology centers between January 2007 and July 2013. Results Among 75 events, 41 (55%) were VT, 22 (29%) AT, and 12 (16%) ICT; males represented 65%, and 71% were preterm. In 19 (25%), thromboembolism was diagnosed on the first day of life. In this "early onset" group, prenatal-associated risk conditions (maternal/placental disease) were reported in 70% and inherited thrombophilia in 33%. Postnatal risk factors were present in 73%; infections and central vascular catheters in 56% and 54% VT, respectively, and in 67% ICT vs 27% AT (<.05). Overall mortality rate was 15% and significant thromboembolism-related sequelae were reported in 16% of discharged patients. Conclusions This report from the Registro Italiano Trombosi Infantili, although limited by representing an uncontrolled case series, can be used to develop future clinical trials on appropriate management and prevention of neonatal thrombosis, focusing on obstetrical surveillance and monitoring of critically ill neonates with vascular access. A thrombosis risk prediction rule specific for the neonatal population should be developed through prospective controlled studies. © 2016 Elsevier Inc
Highly reliable and high-yield 1300-nm InGaAlAs directly modulated ridge Fabry-Perot lasers, operating at 10-Gb/s, up to 110/spl deg/C, with constant current swing
No full textTransceivers for 300 m multimode links, based on a serial 10 Gb laser source and incorporating receiver based electronic dispersion compensation (EDC) are creating the first high volume application for 10 Gb FP (Fabry Perot). A highly reliable and high yield uncooled ridge FP laser is presented. The device shows excellent power characteristics in the 25-150/spl deg/C temperature range with very high T0 (95 K in the temperature range 0-85/spl deg/C and still 78 K at 150/spl deg/C). Outstanding dynamic performances are also shown: 6 dB of extinction ratio can be achieved up to 110/spl deg/C, by using a constant current swing of 50 mA
