jueves, 14 de agosto de 2014

Deco for Divers - A Diver's Guide to Decompression Theory and Physiology by Mark Powell

Muy buenas,
Bueno, pues, finalmente, me he tirado a la piscina y, como no me lo puedo bajar en PDF, me lo he comprado:
http://www.dive-tech.co.uk/deco%20for%20divers.htm


Deco for Divers provides a comprehensive overview of the principles underlying decompression theory and physiology. Mark Powell has written a book that for the first time allows the average diver to fully understand the principles behind this fascinating and critical aspect of diving. As well as a thorough examination of air decompression the book also addresses decompression using nitrox and mixed gases. It is completely up-to-date and includes information on the latest developments including deep stops and advanced bubble models. Deco for Divers bridges the gap between introductory books and specialist scientific journals and is suitable for new as well as highly experienced divers.

This is a brand new technical guide which provides a comprehensive overview of the principles underlying decompression theory. Mark Powell has written a book that for the first time allows the average diver to fully understand the principles behind this fascinating aspect of diving. This book bridges the gap between introductory books and source scientific information.

"It explains decompression in a way that normal divers can understand".
"What I wanted was an intermediate overview that went into more detail but wasn't written for academics or researchers. When I became a technical diving instructor I started teaching other people about decompression theory.I tried to give an overview of decompression theory at this intermediate level to give my students a better understanding of what was happening during decompression dives. This was always very popular amongst divers who, like me, had always wanted to understand more about the concepts and models underlying decompression theory. I was always being asked if I could recommend a good book which covered this area but as before, there was no such text available. Over time I started giving out notes for the decompression theory portion of my courses and these notes started building. Initially they were just a few pages but the notes became more and more comprehensive and started to cover more and more areas. Eventually they grew into this book."
What the experts say
"This is a truly remarkable book which covers all the various theories of decompression and ascents for divers in a most readable and understanding manner. There is no other comprehensive book on decompression to my knowledge which is so easy to read and understand by the average recreational or technical diver."

Peter B. Bennett, Ph.D., D.Sc. Executive Director, UHMS. Emeritus Professor of Anesthesiology, Duke University Medical Center. Founder & 1st President, DAN

"This is the most comprehensive and well-written text I've seen that attempts to explain decompression theory to divers."

Dr Richard Vann Assistant Research Professor in Anesthesiology, Safety Officer and Director of Applied Research at the Duke Hyperbaric Center, and Vice President for Research at DAN.

"This book is a "must read" for those who have ever wondered about decompression tables and how they are created. It is a straight forward book and devoid of technical jargon. It starts with the scientific giants who developed the physics of the gas laws and the physiology of diving and ends with M-values and tissue bubbles. For the curious diver – and all divers should be – it will be money well spent!"

Michael R. Powell, MS, PhD. NASA (retired), Medical Sciences Division, Johnson Space Center, Texas
Mi interés por el tema viene de aquí y por tratar de entender mejor lo que implica la descompresión:
http://viviendoapesardelacrisis.blogspot.com.es/2013/10/velocidad-de-ascenso-lenta-vs-ideal.html 

Por desgracia, parece que no me va a llegar a tiempo para poder llevármelo de viaje y empezar a leerlo:
http://viviendoapesardelacrisis.blogspot.com.es/2014/08/vacaciones-de-buceo-en-la-costa-azul-de.html
Ya iré comentando a medida que vaya descubriendo cosas interesantes!

P.D: Un pequeño extracto:
http://www.dive-tech.co.uk/resources/decofordivers.pdf

Actualización a 20/08/2014: Ok, lo acabo de recibir y ya me lo puedo llevar de vacaciones:







http://viviendoapesardelacrisis.blogspot.com.es/2014/08/vacaciones-de-buceo-en-la-costa-azul-de.html

Bien!

Actualización a 03/09/2014: Bueno, pues ya me lo estoy terminando! Voy por la página 206, capítulo 8 - Other Decompression Models.
Se me ha hecho MUY anemo, educativo y fácil de leer (excepto alguna sección algo técnica).
Iré comentando aquí varios conceptos e idea que me han ido llamando la atención. 

Actualización a 05/09/2014: Vale, en la página 158 (capítulo 6, Deep Stops and Bubble Models) habla de usar Ean50 (Nitrox a 50% de oxígeno) como gas de deco a 21 ms para, reduciendo el nivel de Nitrógeno que respiremos desde ahí a la superficie, acelerar la desaturación del Nitrógeno durante la deco.
Se me ha ocurrido que puedo salsear con el planificador de inmersiones del Suunto DM4 para hacerme una idea de lo que implica éso:
http://viviendoapesardelacrisis.blogspot.com.es/2014/07/software-de-diario-y-planificador-de.html

Por ejemplo, puedo simular mis recientes inmersiones al Donator y al Grec para ver la diferencia que hubiese habido en la deco si yo también (como hacía el guía, Mickael) hubiese pasado a una mezcla rica en oxígeno:



Actualización a 11/09/2014: En el libro se mencionan las paradas profundas (deep stops) y veo que el planificador de inmersiones del Suunto DM4 también las usa (no como mi ordenador de buceo Suunto Vyper):
http://viviendoapesardelacrisis.blogspot.com.es/2014/07/software-de-diario-y-planificador-de.html

Actualización a 18/09/2014: Bueno, más temas que me han interesado e iré comentando:
-Velocidad de Ascenso Óptima: Páginas 45, 46 y 47.
-Velocidad de Ascenso+ Deep Stops (10ms/min + Paradas a 15 y 6 ms): Página 143.
-Ean50 a 21 ms para deco: Página 158.
-Explicación del modelo RGBM: Página 168.
-Límites Operativos con Aire y Nitrox: Página 171.
-Uso de Gases Nobles: Página 172.
-Información sobre la empresa Comex: Página 173.
-Referentes del buceo en cuevas (Hal Wats, Sheck Exeley y Jochen Hasenmayer): Página 175.
-Uso de Heliox y Trimix: Página 176.
-Argón o Nitrox para hinflado de traje: Página 190.
-ICB (Isobaric Counter Diffusion) e Inner Ear y Vestibular DCS: Página 197.
-Inmersiones Sucesivas: Página 204.
-NEDU (Navy Experimental Diving Unit) y Ed Thalmann: Página 205.
-Ordenadores de buceo Cochran Commander y Navy: Página 207.

Actualización a 14/10/2014: Ok, ando dudando de si apuntarme a un curso de técnico de SSI:
http://viviendoapesardelacrisis.blogspot.com.es/2014/10/technical-extended-range-de-ssi.html

Actualizacióna 28/06/2016: Empezamos a hacer paradas profundas con el HelO2 (http://viviendoapesardelacrisis.blogspot.com/2014/11/cambio-de-pila-ordenadores-de-buceo.html) y documento el tema de la velocidad de ascenso (http://viviendoapesardelacrisis.blogspot.com/2013/10/velocidad-de-ascenso-lenta-vs-ideal.html).

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