منابع مشابه
Alexey Khodjakov: Diving into the mitotic apparatus
S ituated at either end of the animal mitotic spindle, centrosomes are one of the most prominent and visually striking features of the mitotic apparatus. But what, exactly, is their function in cell division? And how is the mi-totic spindle organized in dividing cells? Alexey Khodjakov has been grappling with such questions since he was a graduate student in Russia. Using advanced mi-croscopy t...
متن کاملCerebral arterial gas embolism in a diver using closed circuit rebreather diving apparatus.
A Singaporean naval diver suffered symptoms and signs of cerebral arterial gas embolism (CAGE) following a panicked ascent from a depth of 5-6 metres' sea water while using a Dräger LAR V closed-circuit oxygen rebreather system. He presented with altered mental status and paresis. CAGE due to gas mixtures with high oxygen content has seldom been reported. The diver had no sequelae following pro...
متن کاملDiving mammals.
The ability of diving mammals to forage at depth on a breath hold of air is dependent on gas exchange, both in the lung and in peripheral tissues. Anatomical and physiological adaptations in the respiratory system, cardiovascular system, blood and peripheral tissues contribute to the remarkable breath-hold capacities of these animals. The end results of these adaptations include efficient venti...
متن کاملResponse to CO2 in novice closed-circuit apparatus divers and after 1 year of active oxygen diving at shallow depths.
Elevated arterial Pco(2) (hypercapnia) has a major effect on central nervous system oxygen toxicity in diving with a closed-circuit breathing apparatus. The purpose of the present study was to follow up the ability of divers to detect CO(2) and to determine the CO(2) retention trait after 1 year of active oxygen diving with closed-circuit apparatus. Ventilatory and perceptual responses to varia...
متن کاملdiabetes and diving
a 35 year old diver comes to your office. he had hyperglycemia in his last check up. he asks if he can steel dive in spite of hyperglycemia. we reviewed the recent studies about diabetic persons who dive. recent studies have shown that well controlled diabetic persons may be permitted to dive, but if they have any problem such as diabetic nephropathy, retinopathy, neurological and cardiac probl...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Scientific American
سال: 1880
ISSN: 0036-8733
DOI: 10.1038/scientificamerican08211880-3848dsupp