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1. |
Record Nr. |
UNINA9910459712303321 |
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Autore |
Essig Frederick B. |
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Titolo |
Plant life : a brief history / / Frederick B. Essig |
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Pubbl/distr/stampa |
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Oxford, England : , : Oxford University Press, , 2015 |
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©2015 |
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ISBN |
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Descrizione fisica |
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1 online resource (281 p.) |
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Disciplina |
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Soggetti |
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Plants - Evolution |
Electronic books. |
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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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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Cover; Plant Life; Copyright; Dedication; Contents; Acknowledgments; Artwork Sources; Introduction; 1 The Origin of Photosynthesis; 2 Eukaryotic Plant Life; 3 Plants Invade the Land; 4 Vascular Plants and the Rise of Trees; 5 Seeds and the Gymnosperms; 6 Darwin's Abominable Mystery; 7 Adaptations for Pollination and Seed Dispersal; 8 The Dicotyledonous Grade; 9 The Monocots; Epilogue; Notes; Glossary; Bibliography; Index |
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Sommario/riassunto |
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Charles Darwin, the father of the theory of evolution, described the evolutionary origin of flowering plants as an ""abominable mystery."" Flowering plants - which appeared abruptly during the late Cretaceous Period - the origins of photosynthesis, and the early evolution of land plants are some of earth's most mysterious breakthroughs. The first seed plants appear in the fossil record about 350 million years ago, and flowering plants first appear approximately 120 million years ago, but the transitions between these major forms of plant life remain obscure. Prior to each breakthrough was a lo |
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2. |
Record Nr. |
UNISA996279748503316 |
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Titolo |
ANSI/IEEE Std 647-1981 : IEEE Standard Specification Format Guide and Test Procedure for Single-Axis Laser Gyros / / Institute of Electrical and Electronics Engineers |
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Pubbl/distr/stampa |
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[Place of publication not identified] : , : IEEE, , 1981 |
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ISBN |
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Descrizione fisica |
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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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This standard defines the requirements for a single-axis laser gyro to be used as a sensor in an attitude control system, an angular displacement measuring system, an angular rate measuring system. This includes the electronics necessary to operate the gyro and to condition the output signal. |
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