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The heart is a muscular organ situated in the mediastinum.It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...
In mathematics, "rational" is often used as a noun abbreviating "rational number". The adjective rational sometimes means that the coefficients are rational numbers. For example, a rational point is a point with rational coordinates (i.e., a point whose coordinates are rational numbers); a rational matrix is a matrix of rational numbers; a rational polynomial may be a polynomial with rational ...
Julia provides rational numbers with the rational operator, //. For example, 6 // 9 == 2 // 3 && typeof (-4 // 9) == Rational {Int64}. [2] Haskell provides a Rational type, which is really an alias for Ratio Integer (Ratio being a polymorphic type implementing rational numbers for any Integral type of numerators and denominators). The fraction ...
The study of algebraic number fields, that is, of algebraic extensions of the field of rational numbers, is the central topic of algebraic number theory. This study reveals hidden structures behind the rational numbers, by using algebraic methods.
The U.S. population experienced an estimated 151 million excess mental health disorders attributable to exposure to lead from car exhaust, according to a study.
Latino men vaulted into the spotlight with their greater-than-expected support for President-elect Donald Trump. Soon, they’ll be looking for returns on their votes. U.S. Hispanics, who are ...
Oxygen-poor blood enters the right side of the heart through two large veins. Oxygen-rich blood from the lungs enters through the pulmonary veins on the left side of the heart into the aorta and then reaches the rest of the body. The capillaries are responsible for allowing the blood to receive oxygen through tiny air sacs in the lungs.
Oregon maintains the No. 1 position but much of the top 10 of the US LBM Coaches Poll gets an overhaul after Week 12 results in college football.