spiral pump
21Dynamical billiards — The Bunimovich stadium is a chaotic dynamical billiard A billiard is a dynamical system in which a particle alternates between motion in a straight line and specular reflections from a boundary. When the particle hits the boundary it reflects… …
22Heat exchanger — An interchangeable plate heat exchanger Tubular heat exchan …
23Timeline of peptic ulcer disease and Helicobacter pylori — This is a timeline of the events relating to the discovery that peptic ulcer disease is caused by H. pylori . In 2005, Barry Marshall and Robin Warren were awarded the Nobel Prize in Physiology or Medicine for their discovery that peptic ulcer… …
24Annelid — Temporal range: Early Ordovician–Recent[1] …
25Piping and instrumentation diagram — A piping and instrumentation diagram/drawing (P ID) is a diagram in the process industry which shows the piping of the process flow together with the installed equipment and instrumentation. Contents 1 Contents and Function 2 List of P ID items 3 …
26human cardiovascular system — ▪ anatomy Introduction organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes. It is a closed tubular system in which the… …
27Cleavage (embryo) — In embryology, cleavage is the division of cells in the early embryo. The zygotes of many species undergo rapid cell cycles with no significant growth, producing a cluster of cells the same size as the original zygote. The different cells derived …
28Hydraulic ram — A hydraulic ram is a cyclic water pump powered by hydropower. It functions as a hydraulic transformer that takes in water at one hydraulic head and flow rate, and outputs water at a different hydraulic head and flow rate. The device utilizes a… …
29Samovar — A samovar Audio|ru samovar.ogg|listen (Russian: самовар, IPA ru|səmɐˈvar literally self boiler ) is a heated metal container traditionally used to heat and boil water in and around Russia, as well as in other Slavic nations, Iran, Kashmir, and… …
30Dirichlet Laplacian — refers to the mathematical problems with the Helmholtz equation (Delta + lambda) Psi =0 where Delta is the Laplace operator; in the two dimensional space, Delta=frac{partial^2}{partial x^2}+frac{partial^2}{partial y^2}differentiates with respect… …
