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Stability analysis of high-beta plasmas in the Joint European Torus
Kwon, O J,Chapman, I T,Buratti, P,Han, H,Na, Y,contributors, JET-EFDA Published jointly by The Institute of Physics and 2012 Plasma physics and controlled fusion Vol.54 No.4
<P>The linear stability of ideal instabilities with low toroidal mode numbers has been assessed for various high-beta plasmas in JET including steady-state and hybrid scenarios. Results of detailed stability analysis of discharges with the minimum in safety factor near 1, 3/2 and 2 are presented. In all cases, the plasmas are found to become unstable to global ideal kink-ballooning modes as the minimum safety factor decreases with the current diffusion. The plasmas are found to exhibit continuous modes experimentally which degrade performance, with the mode onset being extremely well correlated with the crossing of the numerically predicted stability boundaries. The most favorable profiles for global stability have also been assessed.</P>
Structural glass panels: An integrated system
E. Speranzini,G. Bidini,L. Barelli,C. Buratti,G. Castori,E. Belloni,F. Merli 국제구조공학회 2022 Smart Structures and Systems, An International Jou Vol.30 No.3
In building envelope, transparent components play an important role. The structural glazing systems are the weak element of the casing in terms of mechanical resistance, thermal and acoustic insulation. In the present work, new structural glass panels with granular aerogel in interspace were investigated from different points of view. In particular, the mechanical characterization was carried out in order to assess the resistance to bending of the single glazing pane. To this end, a special instrument system was built to define an alternative configuration of the coaxial double ring test, able to predict the fracture strength of glass large samples (400 × 400 mm) without overpressure. The thermal and lighting performance of an innovative double-glazing facade with granular aerogel was evaluated. An experimental campaign at pilot scale was developed: it is composed of two boxes of about 1.60 × 2 m<sup>2</sup> and 2 m high together with an external weather station. The rooms, identical in terms of size, construction materials, and orientation, are equipped with a two-wing window in the south wall surface: the first one has a standard glazing solution (double glazing with air in interspace), the second room is equipped with the innovative double-glazing system with aerogel. The indoor mean air temperature and the surface temperature of the glass panes were monitored together with the illuminance data for the lighting characterization. Finally, a brief energy characterization of the performance of the material was carried out by means of dynamic simulation models when the proposed solution is applied to real case studies.
André Junior Santana,Jean Carlos Debastiani,Regina Inês Kunz,Pamela Buratti,Rose Meire Costa Brancalhão,Lucinéia de Fátima Chasko Ribeiro,Márcia Miranda Torrejais,Gladson Ricardo Flor Bertolini 한국운동재활학회 2018 JER Vol.14 No.1
Physical exercise may help maintain muscle properties and functional improvement after peripheral nerve lesion, which may be enhanced by using biocompatible substances, such as sericin. The aim of this study was analyse the effect of sericin associated with swimming exercise on the phenotype, innervation, and functionality of the plantar muscle of Wistar rats. Forty randomly divided adult rats were used in five groups of eight animals: control, injury, sericin, exercise, exercise and sericin. The application of sericin was done on the spot, 100 μL, shortly after nerve compression. Three days after sciatic nerve compression, the swimming and swimming and sericin groups were submitted to physical swimming exercise for 21 days. Afterwards, the animals were euthanised and the plantar muscle was dissected and submitted to histochemical and histoenzymological techniques. The grip strength test did not show alterations in muscular functionality, and the control presented greater muscle mass in relation to the other groups, the same did not occur for muscle length. Polymorphic neuromuscular junctions were detected in the groups, although without significant morphometric alterations of the area, major and minor diameters. The percentage of type I fibres was lower in the lesion group and there was no difference in fibres IIa and IIb between groups. The area of fibres I, IIa and IIb remained constant between groups. Sericin biopolymer combined with swimming exercise did not affect plantar muscle function, submitted to experimental axonotmosis, whose contractile properties were altered by nerve injury.