نتایج جستجو برای: diving

تعداد نتایج: 4795  

Journal: :Diving and hyperbaric medicine 2008
Douglas Walker John Lippmann

An individual case review of the diving-related deaths that were reported to have occurred in Australia in 2003 was conducted as part of the combined Project Stickybeak/DAN Asia-Pacific dive fatality reporting project. The case studies were compiled using reports from witnesses, the police and coroners. In each case, the particular circumstances of the accident are provided, as well as details ...

2012
Jacek Kot

Clear differences between professional and recreational deep diving are disappearing, at least when taking into account the types of breathing mixtures (oxygen, nitrox, heliox, and trimix) and range of dive parameters (depth and time). Training of recreational deep divers is conducted at depths of 120–150 metres and some divers dive to 180–200 metres using the same diving techniques. Extremely ...

2018
Hai-Bin Gao Li-Qing Wang Jian-Yun Zhou Wei Sun

The aim of the present study was to investigate the advantages and disadvantages of the diving endoscopic technique in pituitary adenoma surgery, and the application value in determining the extent of tumor resection. A total of 37 patients with pituitary adenoma initially underwent tumor resection under an endoscope-assisted microscope via standard trans-nasal-sphenoidal approach, and tumor ca...

Journal: :Diving and hyperbaric medicine 2011
Marguerite St Leger Dowse Christine Cridge Gary Smerdon

INTRODUCTION Various prescribed and over-the-counter medications may theoretically be incompatible with the diving environment. Anecdotally, it is known divers regularly take medications around the time of their diving activities for different health conditions, possibly ignoring the recommendations not to do so. As part of a diversion in a study of illicit drug use in sport divers, secondary d...

2017
Serkan Ergözen

The mystical beauty of the subaquatic world is undoubtedly attractive, and many techniques and forms of equipment have been developed in the last few decades to allow us to explore the underwater world. A swimmer or diver needs swimming goggles or a diving mask to have clear vision because of the refraction problem between the eye and the water interface. Although these items are effective for ...

Journal: :Undersea & hyperbaric medicine : journal of the Undersea and Hyperbaric Medical Society, Inc 2002
J W Gibbs C A Piantadosi E W Massey

Although diving with compressed air is generally safe, neurological problems resulting from infarction in SCUBA diving are well known, including arterial gas embolism and decompression sickness (caisson's disease, bends) involving the brain and spinal cord. While air gas embolism forms the overwhelming majority of causes for stroke in divers, internal carotid artery (ICA) dissection is another ...

2005
Ji-Hong Li Pan-Mook Lee

This paper presents an adaptive nonlinear controller for diving control of an autonomous underwater vehicle (AUV). So far, diving dynamics of an AUV has often been derived under various assumptions on the motion of the vehicle. Typically, the pitch angle of AUV has been assumed to be small in the diving plane. However, these kinds of assumptions may induce large modeling errors and further may ...

Journal: :Journal of evolutionary biology 2008
F Brischoux X Bonnet T R Cook R Shine

Body mass positively influences diving capacities in air-breathing vertebrates and has been identified as a key determinant for the evolution of diving. Our review on the relationship between body mass and dive duration (a major parameter of dive performances) encompassed for the first time a wide diversity of air-breathing vertebrates. We included a substantial number of nonavian and nonmammal...

Journal: :Postgraduate medical journal 2008
D Z H Levett I L Millar

Exposure to the underwater environment for recreational or occupational purposes is increasing. Approximately 7 million divers are active worldwide and 500,000 more are training every year. Diving related illnesses are consequently an increasingly common clinical problem with over 1000 cases of decompression illness reported annually in the USA alone. Divers are exposed to a number of physiolog...

2013
Russel D. Andrews

There is a dire need to determine the normal cardiovascular dive response of deep-diving odontocetes like beaked whales, and to examine how that response might be altered during exposure to anthropogenic sound. However, no one has ever recorded the electrocardiogram of a wild, freeranging odontocete. Recent advances in the miniaturization of multi-channel datalogging devices now make it possibl...

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