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Status of the 25 T, 100 mm Bore HTS Solenoid for an Axion Dark Matter Search Experiment
Gupta, Ramesh,Anerella, Michael,Cozzolino, John,Joshi, Piyush,Joshi, Shresht,Plate, Stephen,Sampson, William,Song, Honghai,Wanderer, Peter,Chung, Woohyun,Kim, Jingeun,Ko, Byeong Rok,Youn, Sung Woo,Sem Institute of Electrical and Electronics Engineers 2019 IEEE transactions on applied superconductivity Vol.29 No.5
<P>This paper presents the design and test results of the pancake coils for the 25 T, 100 mm bore solenoid that Brookhaven National Laboratory (BNL) is building for the Institute for Basic Science (IBS) in Korea for an Axion dark matter search. The design is based on second-generation (2G) high-temperature superconducting (HTS) tape with no-insulation winding. The major challenges in the high-field, large aperture solenoid are the large stresses and the quench protection. Moreover, the design should be robust for reliable operation in a user facility environment. The paper will also present the construction and test results of two ∼100 mm bore double pancake coils creating a peak field of up to ∼17 T and similar hoop stresses as will be in the 25 T solenoid. The coils were subject to several severe tests, including the simulations of large defects and extended quench studies at ∼4 K. The most striking part of these studies was the demonstration of how fast (a few hundred milliseconds) these coils can turn from the superconducting state to the normal state (quench or thermal runaway). This removes the past concerns of protecting high-field HTS coils because of the low quench propagation velocities.</P>
Florinda Fratianni,Riccardo Riccardi,Patrizia Spigno,Maria Neve Ombra,Autilia Cozzolino,Patrizio Tremonte,Raffaele Coppola,Filomena Nazzaro 한국식품영양과학회 2016 Journal of medicinal food Vol.19 No.7
Extracts of the bulbs of the two endemic varieties “Rosato” and “Caposele” of Allium sativum of the Campania region, Southern Italy, were analyzed. The phenolic content, ascorbic acid, allicin content, and in vitro antimicrobial and antifungal activity were determined. Ultra performance liquid chromatography with diode array detector performed polyphenol profile. The polyphenolic extracts showed antioxidant activity (EC50) lower than 120 mg. The amount of ascorbic acid and allicin in the two extracts was similar. Polyphenol extract exhibited antimicrobial activity against Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, and (only by the extract of Rosato) against Bacillus cereus. The extract of Caposele was more effective in inhibiting the growth of Aspergillus versicolor and Penicillum citrinum. On the other hand, the extract of Rosato was effective against Penicillium expansum.
FEASIBILITY STUDY ON THE REDESIGN OF A METALLIC CAR HOOD BY USING COMPOSITE MATERIALS
Andrea Sellitto,Aniello Riccio,Giustino Magno,Giuseppe D’Errico,Gianluca Monsurrò,Alessandro Cozzolino 한국자동차공학회 2020 International journal of automotive technology Vol.21 No.2
Nowadays, fuel consumption and exhaust emissions are topical issues in the automotive field, as environmental safeguard legislation constraints are going to get tougher. Indeed, one of the most efficient methods to contain fuel consumption and emissions is the weight reduction of the vehicle. In this paper, a feasibility study on the lightweight redesign of a metallic car hood by using composite materials is presented. In particular, two different configurations, employing composite laminates and sandwich structures, are investigated. The feasibility of each configuration is assessed in terms of stiffness specifications and pedestrian safety requirement. Hence, Head Injury Criteria are employed, according to regulations. Finally, an optimization procedure on the stacking sequence of the composite laminates is performed, to determine, among the feasible solutions, the one characterized by the minimum weight.