Living it up in the dead zone
نویسندگان
چکیده
منابع مشابه
Gene swapping in the dead zone
Viruses can swap DNA between bacteria that live in regions of the oceans with little or no oxygen.
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The Gulf of Mexico “dead zone” reached a record 7,700 square miles in the summer of 1999. That year, heavier flow in the Mississippi River brought an abundance of nutrients to the Gulf, resulting in hypoxia, or inadequate dissolved oxygen in bottom waters that forces bottom-dwelling animals to either flee or die. With the year 2001 have come legislative efforts to reduce the dead zone—if not ki...
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This paper presents an approach for dead zone compensation in pneumatic position servo systems. The dead zone is an inherent nonlinearity in pneumatic servovalves, where for a range of input control values, the valve gives no output flow. Although pneumatic actuators are very common in industry, they have limitations in servo pneumatic applications that are caused by typical non-linearities of ...
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Necrotizing fasciitis is an uncommon infection mainly caused by Streptococcus pyogenes, which is also known as flesh-eating bacteria. It is often caused by bacteria, but can also be caused and complicated by fungus. We report a case of bacterial necrotizing fasciitis that was complicated by a fatal fungal infection, a rare clinical presentation affecting the upper limbs, head and neck, in a you...
متن کاملNote on the “Dead Zone” in Layered Accretion Models
Current layered accretion models neglect the properties of the “dead zone”. However, as argued here from simple considerations, the thickness of this zone is a critical quantity when the disc is in hydrostatic equilibrium. It controls not only the structure of the superficial, active layers, but also the mid-plane density and the total disc mass, and should therefore be introduced in models of ...
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ژورنال
عنوان ژورنال: Frontiers in Ecology and the Environment
سال: 2020
ISSN: 1540-9295,1540-9309
DOI: 10.1002/fee.2214