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The Acute Effects Of Air Blast On Pulmonary Funcion In Dogs And Sheep
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Book Synopsis The Acute Effects of Air Blast on Pulmonary Funcion in Dogs and Sheep by : Damon Edward G.
Download or read book The Acute Effects of Air Blast on Pulmonary Funcion in Dogs and Sheep written by Damon Edward G. and published by . This book was released on 1970 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pulmonary function tests were conducted before and after exposure of animals to air blasts produced in shock tubes or by high explosives. Pressure- time measurements were made with piezoelectric pressure transducers during each air-blast exposure. Blood samples were obtained without anesthesia from an indwelling arterial catheter. The blood PO2, PCO2, and pH and the end-tidal and mixed expired CO2, O2, and N2 gas concentrations were measured for subjects breathing air and oxygen. There were increases in the alveolar-arterial O2 differences and venous admixture which generally correlated with the extent of blast-induced lung damage. The threshold for lung injury resulting in increased venous admixture in sheep was about 20 psi for reflected overpressures of 'long' duration. Pressures above 43 psi usually caused severe lung damage in which the venous-arterial shunt exceeded 30 percent of the cardiac output, a condition in which the arterial oxygen tension was below the level required for full saturation of the hemoglobin even with animals breathing pure oxygen.
Book Synopsis Effects of Irradiation and Blast on Pulmonary Funcion in Sheep by : John T. Yelverton
Download or read book Effects of Irradiation and Blast on Pulmonary Funcion in Sheep written by John T. Yelverton and published by . This book was released on 1971 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The changes in pulmonary function that result following unilateral exposure to LD50 doses of neutron-gamma irradiation and/or sublethal blast overpressures were investigated in sheep. Animals exposed to blast-only and radiation-plus-blast demonstrated large increments in venous admixture on the day of insult followed by a major recovery toward baseline values during the first 24 hours following injury. The venous admixture of the blast-only animals approached baseline 7 days after exposure but that of the radiation-plus-blast sheep did not return to baseline until 21 days. The sheep exposed to radiation-only, blast-only, and radiation-plus-blast sustained similar reduction in means carbon monoxide diffusing capacity (DLCO) which were below that of the control mean at 2 days and 7 days post exposure. All of the radiation-only and radiation-plus-blast sheep that survived to or beyond 21 days displayed an overshoot or recovery to their individual baseline DLCO values. The blast-only and radiation-plus-blast animals also exhibited an increased mean ineffective alveolar ventilation (VAIneff) which persisted from 1 to 14 days following the onset of trauma. The radiation-only sheep had an increased VAIneff from 2 through 7 days post exposure. (Author).
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1973 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1971 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recovery of the Respiratory System Following Blast Injury by : Damon Edward G.
Download or read book Recovery of the Respiratory System Following Blast Injury written by Damon Edward G. and published by . This book was released on 1970 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pattern of recovery of the respiratory system from blast injury was investigated in sheep exposed to overpressures in a shock tube. Measurements of the pH and blood gas tensions, determinations of the venous- admixture (Qs/Q) and the alveolararterial oxygen gradient (A-a)O2 were conducted before and at intervals up to 132 days following injury. There was an immediate marked increase in Qs/Q, reduction in PaO2, and a moderate increase in (A-a)O2, with very little change in the pH or PCO2 of the arterial blood. The greatest recovery was evident within 24 hours with further gradual improvement seen 2, 7, 14, and 21 days after exposure. After the 21st day, most of the animals exhibited virtual complete recovery of the functional efficiency of the pulmonary system as tested at rest.
Book Synopsis Explosion and Blast-Related Injuries by : Nabil M. Elsayed Ph.D.
Download or read book Explosion and Blast-Related Injuries written by Nabil M. Elsayed Ph.D. and published by Academic Press. This book was released on 2010-07-26 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explosion and Blast-Related Injuries is an authoritative text that brings together diverse knowledge gained from both the experience of clinicians treating blast casualties and the insights of scientists obtained from research and modeling of blast exposures. By providing information on explosion and blast injury patterns, as well as the mechanism of blast-induced injuries, it is a useful reference for both physicians and researchers. With contributions by experts from around the globe, the book covers topics such as the epidemiology of blast and explosion injury, pathology and pathophysiology, and the modeling and mechanism of injury. Finally, this book might stimulate additional studies into ways to improve our current mass casualty response systems.* Contains contributions from experts who had first hand experience dealing with explosion and blast injuries. * Provides a diverse global experience derived from both military operations and terrorist attacks in civilian settings from the US, Europe and the Middle East. * Covers such topics as epidemiology of blast and explosion injury, pathology and pathophysiology, modeling and mechanism of injury, and finally presents the global experiences of blast injury and mass casualty management.
Download or read book NASA Contractor Report written by and published by . This book was released on 1977 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1971 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1970-10 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Sheep as an Experimental Animal by : John Francis Hecker
Download or read book The Sheep as an Experimental Animal written by John Francis Hecker and published by . This book was released on 1983 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction; Anatomy; Physiology and genetics; Behaviour; Breeds and sypply of sheep; Management of experimental sheep; Sampling and recording; Diseases and parasites.
Book Synopsis Workbook for predicting pressure wave and fragment effects of exploding propellant tanks and gas storage vessels by :
Download or read book Workbook for predicting pressure wave and fragment effects of exploding propellant tanks and gas storage vessels written by and published by . This book was released on 1977 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pressure Systems Energy Release Protection (gas Pressurized Systems) by : Samuel J. Brown
Download or read book Pressure Systems Energy Release Protection (gas Pressurized Systems) written by Samuel J. Brown and published by . This book was released on 1986 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal of the Royal Naval Medical Service by :
Download or read book Journal of the Royal Naval Medical Service written by and published by . This book was released on 1997 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Explosion Hazards and Evaluation by : W.E. Baker
Download or read book Explosion Hazards and Evaluation written by W.E. Baker and published by Elsevier. This book was released on 2012-12-02 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explosion Hazards and Evaluation presents the principles and applications of explosion hazards evaluation. The text is organized into nine chapters. Chapters 1 and 2 discuss the energy release processes which generate accidental explosions, and the resulting development of pressure and shock waves in a surrounding atmosphere. The manner in which the "free-field" waves are modified in interacting with structures or other objects in their paths is discussed in Chapter 3. Structural response to blast loading and non-penetrating impact is covered in two chapters, with Chapter 4 including simplified analysis methods and Chapter 5 including numerical methods. Chapter 6 includes a rather comprehensive treatment of generation of fragments and missiles in explosions, and the flight and effects of impact of these objects. Chapter 7 considers thermal radiation of large chemical explosions. Explosions may or may not cause damage or casualty, and various damage criteria have been developed for structures, vehicles, and people. These criteria are presented in Chapter 8. General procedures for both the postmortem evaluation of accidental explosions and for design for blast and impact resistance are reviewed in Chapter 9. Engineers, scientists, and plant safety personnel will find the book very useful.
Book Synopsis U.S. Government Research & Development Reports by :
Download or read book U.S. Government Research & Development Reports written by and published by . This book was released on 1970 with total page 1342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Government Research and Development Reports Index by :
Download or read book U.S. Government Research and Development Reports Index written by and published by . This book was released on 1970 with total page 1412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Index written by and published by . This book was released on 1971 with total page 942 pages. Available in PDF, EPUB and Kindle. Book excerpt:
