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Trace of modeled oxytocin-sensitive neuron showing bursts [dubious – discuss]. Bursting, or burst firing, is an extremely diverse [1] general phenomenon of the activation patterns of neurons in the central nervous system [2] [3] and spinal cord [4] where periods of rapid action potential spiking are followed by quiescent periods much longer than typical inter-spike intervals.
Heat traps are valves or loops of pipe on the cold water inlet and hot water outlet of water heaters. The heat traps allow cold water to flow into the water heater tank, but prevent unwanted natural convection and heated water to flow out of the tank. [1] [2] Newer water heaters have built-in heat traps.
It was first demonstrated, in 1978, by Conway et al. and possibly others that, while α-methyldopamine caused acute decreases in the levels of neuronal dopamine, in some areas of the brain in excess of 75%, levels returned to baseline within 12 hours, indicating that α-methyldopamine could not be responsible for the toxic effects observed. [4]
The medication phentolamine can be given to try to decrease this risk. [4] It is unclear if dopamine is safe to use during pregnancy or breastfeeding. [4] At low doses dopamine mainly triggers dopamine receptors and β1-adrenergic receptors while at high doses it works via α-adrenergic receptors. [4]
The transition from the leading end to the trailing end can include "fins" that make first contact with the existing pipe. Using these fins as the primary breaking point is a very effective way to ensure that the pipe is broken along the entire circumference. A machine is set in the receiving pit to pull the expander head and new pipe into the ...
Heated hoses are suitable for environments from -40°C to 80°C and can be used in explosion-proof zones 1/21 and 2/22, if required. [3] A heated hose consists of a flexible hose, through which the media is pumped. This hose determines the resistance against temperature and chemicals.
A water pipe that burst overnight and flooded Duke University Hospital continued to cause problems Friday, with ambulances being diverted to other hospitals in the region. A chilled water pipe ...
It can be given by mouth or injection into a vein. [1] Onset of effects is around 5 hours and they last about a day. [1] Common side effects include sleepiness. [1] More severe side effects include red blood cell breakdown, liver problems, and allergic reactions. [1] Methyldopa is in the alpha-2 adrenergic receptor agonist family of medication.