Duloxetine is also sometimes used to treat stress urinary incontinence (leakage of urine during physical activity such as coughing, sneezing, laughing, and exercise) in women. Talk to your doctor about using this medication to treat your condition.
Water's density maximum is a product of the same phenomenon. Close to the freezing point, the water molecules start to arrange locally into ice-like structures. This creates some openness in the liquid water, which tends to decrease its density.
Reason density decreases at temperatures above 4Â°C are the same as for any other material - thermal expansion. Reason that density decreases at temperatures bellow 4Â°C is a bit more complicated. Ice has lower density than water because the ice crystal is fairly sparse. There is a lot of empty space within the crystal structure. At temperatures well above freezing, water molecules move individually.