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1. |
Record Nr. |
UNINA9910135771303321 |
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Titolo |
ANSI/IEEE Std C57.110-1986 : IEEE Recommended Practice for Establishing Transformer Capability When Supplying Non-sinusoidal Load Currents / / Institute of Electrical and Electronics Engineers |
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Pubbl/distr/stampa |
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New York, New York : , : IEEE, , 1988 |
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ISBN |
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Descrizione fisica |
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Disciplina |
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Soggetti |
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Transients (Electricity) |
Electric transformers - Windings |
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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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The purpose of the report is to establish uniform methods for determining the capability of transformers to supply nonsinusoidal load currents, without loss of normal life expectancy. Two methods are described. The first is intended for use by those with access to detailed information on loss density distribution within the transformer windings. The second is less accurate and is intended for use by those with access to transformer certified test report data only. It is anticipated that the first method will be used primarily by transformer design engineers, while the second will be employed primarily by users. This recommended practice will be applicable for evaluating the feasibility of applying nonsinusoidal load currents to existing transformers and for specifying new transformers to supply nonsinusoidal loads. |
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2. |
Record Nr. |
UNINA9911020127003321 |
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Titolo |
Evolution of hydrothermal ecosystems on Earth (and Mars?) / / [editors, Gregory R. Bock, Jamie A. Goode] |
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Pubbl/distr/stampa |
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Chichester ; ; New York, : Wiley, 1996 |
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ISBN |
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9786612348006 |
9781282348004 |
1282348000 |
9780470514986 |
0470514981 |
9780470514993 |
047051499X |
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Descrizione fisica |
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1 online resource (348 p.) |
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Collana |
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Ciba Foundation symposium ; ; 202 |
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Altri autori (Persone) |
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Disciplina |
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Soggetti |
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Life - Origin |
Hot spring ecology |
Exobiology |
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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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"Symposium on Evolution of Hydrothermal Ecosystems on Earth (and Mars?), held at the Ciba Foundation, London, January 30-February 1, 1996"--p. vii. |
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Nota di bibliografia |
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Includes bibliographical references and indexes. |
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Nota di contenuto |
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EVOLUTION OF HYDROTHERMAL ECOSYSTEMS ON EARTH (AND MARS?); Contents; Participants; Preface; Hyperthermophiles in the history of life; General discussion I; Phylogenetic perspective on microbial life in hydrothermal ecosystems, past and present; Hydrothermal systems as environments for the emergence of life; Chemical and physical context for life in terrestrial hydrothermal systems: chemical reactors for the early development of life and hydrothermal ecosystems; Stable light isotope biogeochemistry of hydrothermal systems |
High temperature ecosystems and their chemical interactions with their environmentAncient hydrothermal ecosystems on Earth: a new palaeobiological frontier; The Rhynie cherts: an early Devonian ecosystem preserved by hydrothermal activity; Fossilization processes |
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in siliceous thermal springs: trends in preservation along thermal gradients; Lipid biomarkers for bacterial ecosystems: studies of cultured organisms, hydrothermal environments and ancient sediments; General discussion II; The limits of palaeontological knowledge: finding the gold among the dross |
The role of remote sensing in finding hydrothermal mineral deposits on earthExploration strategies for hydrothermal deposits; Water on early Mars; General discussion III; Hydrothermal systems on Mars: an assessment of present evidence; General discussion IV; The transfer of viable microorganisms between blanets; Summing-up; Index of contributors; Subject index |
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Sommario/riassunto |
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This book explores the possibility that life exists on Mars. It provides an interdisciplinary overview of the early evolution of life in hydrothermal ecosystems on Earth, focusing on the problem of remote sensing and incorporating geological work relevant to the search for evidence of early life on Earth and Mars. It discusses the belief that studying thermal spring deposits as part of this search may be the best opportunity to test whether life on earth is a ""unique experiment,"" or whether there is life elsewhere in the solar system. |
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