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Books: Technical Manuals


Front Cover of Deco for Divers 2nd Ed

  Deco for Divers 2nd Ed


Our Price: £29.99

Pages : 192 pages
Format : Softback
Publication Date : Dec 2014
Availability : Normally despatched within 24 hours

Buy Deco for Divers 2nd Ed

WINNING TITLE: Deco for Divers has won the 2010 title of 'most significance' at EuroTek 2010.
Deco for Divers has won 2014 TekDive - Media Award

Now fully updated and revised. 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.

CONTENTS
Contents
Introduction................................................ 1
1 Historical Perspective......................... 7
Robert Boyle (1627 - 1691)................................... 7
Rediscovery................................................................8
Caissons Disease......................................................9
Paul Bert (1833-1886).............................................11
John Scott Haldane (1860-1936).....................12
US Navy.......................................................................15
Robert Workman.....................................................16
Professor Albert Bühlmann (1923–1994).....17
2 Decompression Principles..............19
Overview.....................................................................19
The Air we Breathe..............................................20
The Effects of Pressure........................................21
Dalton’s Law.............................................................22
The Lungs..................................................................23
Henry’s Law.............................................................. 26
Diffusion..................................................................... 26
Gas Transport.......................................................... 28
Perfusion................................................................... 28
Saturation................................................................. 29
Tissue Compartments.........................................30
Half Times.................................................................30
Supersaturation......................................................32
Critical Supersaturation..................................... 34
Controlling Ratio M-Values............................... 34
Ascent Rates........................................................... 36
No-Stop Dives......................................................... 39
Bubble Formation.................................................40
Silent Bubbles.........................................................40
Safety Stops..............................................................41
Decompression Stops......................................... 43
Oxygen Window....................................................48
3 Decompression Illness.....................51
Burst Lung..................................................................51
Arterial Gas Embolism (AGE )..........................52
Interstitial Emphysema........................................52
Pneumothorax.........................................................52
Decompression Sickness....................................52
Decompression Classification..........................53
Type I............................................................................53
Type II......................................................................... 54
Type III........................................................................ 54
Type IV .......................................................................55
Reclassification of DCS and AGE ...................57
Symptoms of the Bends by Frequency .... 59
Time of Onset of Symptoms .......................... 59
Predisposing Factors..........................................60
Dehydration.............................................................60
Dive Profiles...............................................................61
Repetitive Diving................................................... 62
Temperature............................................................. 62
Obesity....................................................................... 63
Exercise...................................................................... 63
Smoking..................................................................... 65
Age...............................................................................66
Flying after Diving................................................66
Reverse Profile.........................................................67
Previous Injury........................................................ 69
PFO.............................................................................. 69
Lung Shunts..............................................................72
Doppler Bubble Detection.................................73
Medical implications of DCI..............................75
First Aid......................................................................76
Oxygen........................................................................77
5 Minute Neurological Exam.............................79
Recompression.........................................................81
In-Water Recompression................................... 85
Omitted Decompression....................................87
4 Saturation Diving............................. 89
Development Of Saturation Diving..............90
Commercial Saturation Diving........................ 93
Saturation Decompression............................... 93
5 Nitrox...................................................... 95
Using Nitrox..............................................................97
Using Nitrox as a Decompression Gas......100
The Oxygen Window Revisited.................... 104
6 Deep Stops and Bubble Models...109
Deep Stops................................................................ 111
Pyle Deep Stops – an Example...................... 113
Gradient Factors.................................................... 116
Dual Phase (Bubble) Models........................... 118
Individual Bubble Behaviour...........................120
Multiple Bubble Behaviour.............................. 124
Gas Switches and Bubble Models................126
Specific Bubble Models:
Thermodynamic Model..................................... 127
Varying Permeability Model............................129
Critical Volume Algorithm................................ 131
Development of VPM......................................... 132
Reduced Gradient Bubble Model.................133
7 Mixed Gas............................................ 135
Choice of Gas.........................................................136
Argon.........................................................................136
Neon...........................................................................136
Hydrogen.................................................................136
Helium........................................................................ 137
Trimix......................................................................... 140
Trimix Decompression.......................................143
Helium in Decompression Gases.................. 147
Isobaric Counter Diffusion...............................148
8 Other Decompression Models.. 157
RNPL – Slab Diffusion........................................158
BSAC -’88................................................................. 160
US Navy Exponential Linear Model.............162
Probabilistic Models............................................163
DCIEM........................................................................165
Ratio Deco...............................................................168
9 Decompression Calculations...... 171
Compartments, Half Times and Surfacing Ratios.... 171
Workman M-Values (1965).............................. 172
Bühlmann ................................................................ 173
ZH-L16A Set of M-Values for Nitrogen (1990)..... 174
ZH-L16A Half-times, “A” and “B”
Values for Nitrogen and Helium.................... 175
Conversion from Workman M-Values to
Bühlmann Coefficients...................................... 175
The DCAP MM11F6 Model (1988) for Nitrogen....... 176
Variable Permeability Model (VPM)............ 177
Alveolar Partial Pressure................................... 177
No Decompression Limits (NDL)................. 178
Saturation Level.................................................... 178
Bühlmann................................................................. 178
Schreiner.................................................................. 178
Ascent Ceiling........................................................ 178
Decompression Stops........................................ 179
Calculating a Decompression Profile.......... 179
Gradient Factors...................................................180
Saturation Diving..................................................180
DCIEM........................................................................180
Ratio Deco................................................................ 181
GUE Ratio Deco Calculations.......................... 181
Ratio Set Points..................................................... 181
First Deep Stop...................................................... 181
Generic Ratio Deco Calculations................... 181
Ratio Set Points..................................................... 181
First Deep Stop...................................................... 181
Acknowledgements............................................182
References and Further Reading.....183
Index......................................................... 190

Reviews
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

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