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1. |
Record Nr. |
UNIBAS000023505 |
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Autore |
Merežkovskij, Dmitrij Sergeevič |
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Titolo |
Giuliano l'Apostata : la morte degli Dei : romanzo / Demetrio Merezkovskij ; traduzione integrale e conforme al testo russo a cura di Luigi Ermete Zalapy |
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Pubbl/distr/stampa |
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Sesto San Giovanni (Milano) : <<A.>> Barion Casa per edizioni popolari |
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Descrizione fisica |
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Disciplina |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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In cop. e in testa al front. firma autografa: Sergio de Pilato, nel '938, XVI |
L. 4 |
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2. |
Record Nr. |
UNINA9910674052203321 |
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Autore |
Liang Dawei |
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Titolo |
Challenge and Research Trends of Solar Concentrators |
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Pubbl/distr/stampa |
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Basel, : MDPI - Multidisciplinary Digital Publishing Institute, 2022 |
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ISBN |
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Descrizione fisica |
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1 electronic resource (178 p.) |
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Soggetti |
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Technology: general issues |
History of engineering & technology |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Sommario/riassunto |
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Primary and secondary solar concentrators are of vital importance for advanced solar energy and solar laser researches. Some of the most |
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recent developments in primary and secondary solar concentrators were firstly presented. A novel three-dimensional elliptical-shaped Fresnel lens analytical model was put forward to maximize the solar concentration ratio of Fresnel-lens-based solar concentrators. By combining a Fresnel lens with a modified parabolic mirror, significant improvement in solar laser efficiency was numerically calculated. A fixed fiber light guide system using concave outlet concentrators was proposed. The absence of a solar tracking structure highlights this research. By shaping a luminescent solar concentrators in the form of an elliptic array, its emission losses was drastically reduced. Simple conical secondary concentrator was effective for thermal applications. New progresses in solar-pumped lasers by NOVA University of Lisbon were presented. By adopting a rectangular fused silica light guide, 40 W maximum solar laser power was emitted from a single Ce:Nd:YAG rod. An aspheric fused silica secondary concentrator and a small diameter Ce:Nd:YAG rod were essential for attaining 4.5 % record solar-to-laser power conversion efficiency. A novel solar concentrator design for the efficient production of doughnut-shaped and top-hat solar laser beams were also reported. More importantly, a novel solar concentrator approach for the emission of 5 kW-class TEM00 mode solar laser beams from one megawatt solar furnace was put forward at the end of this book, revealing promising future for solar-pumped lasers. |
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