Systole is the last stage of a heart beat. It happens right after diastole, when the heart refills with blood. During systole, the heart's two ventricles contract (squeeze). (The ventricles are the largest parts of the heart, which pump blood to the body and lungs.) During systole, the heart muscle gets an automatic electrical signal that tells the heart to contract (squeeze). This makes the blood flow out of the heart.
Basics. General contractors earned a mean $45.14 per hour, or $93,900 per year, as of May 2011, according to the Bureau of Labor Statistics. The lowest-paid 10 percent of contractors received less than $24.35 per hour, or $50,650 per year, while the best-paid 10 percent made $71.67 per hour, or $149,070 per year.
However, independent contractors do not have to receive minimum wage. Both independent contracting and employment call centers may pay an hourly rate, but it is more common in employment positions. Basic pay rates (not including incentives) range from the U.S. minimum wage of $7.25 to as much $12 an hour.Bilingual agents may be paid at the upper end of the scale because there is often a pay differential of $1 or more per hour for bilingual call center jobs.owever, independent contractors do not have to receive minimum wage. Both independent contracting and employment call centers may pay an hourly rate, but it is more common in employment positions. Basic pay rates (not including incentives) range from the U.S. minimum wage of $7.25 to as much $12 an hour.