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Copyright of Cirugía y Cirujanos is the property of Publicidad Permanyer SLU and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: The 25% of traumatic deaths are due to chest trauma with a mortality of 28%, and closed trauma is the most common mechanism of injury. The use of firearms increases the relative risk of death. The five more frequent specific chest injuries are lung contusion (31.8%), hemothorax/ pneumothorax (19.4%), rib fractures (13.2%), and diaphragmatic injury (7.5%). Clinical case: Patient of 25 years with a single firearm projectile wound in the chest who assisted to the emergency room (ER) with significant respiratory distress and meriting surgical emergency airway, documenting double pneumothorax, aortic laceration and rupture of the trachea, which required management in the ER with bilateral chest tube placement and subsequent surgical repair. Conclusion: Anatomical and pathophysiological knowledge and the standardized management of the international guidelines are the key to keep a high level of suspect with a patient with chest penetrating trauma. Besides they improve the possibility of diagnosis and timely treatment. [ABSTRACT FROM AUTHOR]

Copyright of Llull: Revista de la Sociedad Espanola de Historia de las Ciencias y de las Tecnicas is the property of Sociedad Espanola de Historia de las Ciencias y de las Tecnicas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Latin-American Journal of Physics Education is the property of Latin-American Physics Education Network and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The article discusses the physical theories of air according to the 16th century book "Quesiti et inventione diverse" by Niccoló Tartaglia. It describes Tartaglia's theory regarding the resistance of air and the characteristics of the force required to divide it. It then discusses Tartaglia's relation to the theories of Italian scientist Vannoccio Biringuccio, focusing on Biringuccio's understanding of the way sound travels on air. Other subjects under discussion include the study of air using cannons, the medieval treatise De rationeponderis, and the mathematician Jordanus Nemorarius.