Bücher
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| Naturwissenschaften und Technik |
| Chemie |
Medizin 02 | |
Polymer Electrolyte Fuel Cell DurabilityGebundene Ausgabe This book covers a significant number of R& D projects, performed mostly after 2000, devoted to the understanding and prevention of performance degradation processes in polymer electrolyte fuel cells ( P E F Cs). The extent and severity of performance degradation processes in P E F Cs were recognized rather gradually. Indeed, the recognition overlapped with a significant number of industrial dem- strations of fuel cell powered vehicles, which would suggest a degree of technology maturity beyond the resaolution of fundamental failure mechanisms. An intriguing question, therefore, is why has there been this apparent delay in addressing fun- mental performance stability requirements. The apparent answer is that testing of the power system under fully realistic operation conditions was one prerequisite for revealing the nature and extent of some key modes of P E F C stack failure. Such modes of failure were not exposed to a similar degree, or not at all, in earlier tests of P E F C stacks which were not performed under fully relevant conditions, parti- larly such tests which did not include multiple on-off and/or high power-low power cycles typical for transportation and mobile power applications of P E F Cs. Long-term testing of P E F Cs reported in the early 1990s by both Los Alamos National Laboratory and Ballard Power was performed under conditions of c- stant cell voltage, typically near the maximum power point of the P E F C. |
Angio OCT in Everyday Ophthalmic PracticeBruno Lumbroso, David Huang, Marco RispoliGebundene Ausgabe |
101 Cases in Respiratory MedicineSupriya SarkarTaschenbuch |
First Aid Cases for the USMLE Step 1Tao Le, Richard GiovaneTaschenbuchNow fully updated: the ultimate, grade-boosting case companion to First Aid for the U S M L E Step 1 Enhanced by 400 meticulously illustrated cases in a new single-page format, the fourth edition of First Aid Cases for the U S M L E Step 1 is an integral part of any student's U S L M E Step 1 exam prep. Enabling test-takers to make connections between basic science principles and clinical situations, each case contains precise drawings or clinical images with Q& As that drive home main concepts. Chapters are keyed to Tao Le's First Aid for the U S M L E Step 1, which allows students to simultaneously study cases and master high-yield facts. . Hundreds of instructive cases get students ready to ace the U S M L E Step 1. New full-color design, with each case self-contained in a single page for easy reference . Active recall questions and answers reinforce important concepts. A perfect companion to First Aid for the U S M L E Step 1, with a similar organization that facilitates review |
Photosystem I: The Light-Driven Plastocyanin: Ferredoxin Oxidoreductase (Advances in Photosynthesis and Respiration, Band 24)Gebundene Ausgabe |
Trauma Care Pre-Hospital ManualTaschenbuch |
Pesticide Profiles: Toxicity, Environmental Impact, and FateMichael A. (Michigan State University, MI, USA) KamrinGebundene Ausgabe |