solution-gas drive
51photosynthesis — photosynthetic /foh teuh sin thet ik/, adj. photosynthetically, adv. /foh teuh sin theuh sis/, n. Biol., Biochem. (esp. in plants) the synthesis of complex organic materials, esp. carbohydrates, from carbon dioxide, water, and inorganic salts,… …
52Romania — /roh may nee euh, mayn yeuh/, n. a republic in SE Europe, bordering on the Black Sea. 21,399,114; 91,699 sq. mi. (237,500 sq. km). Cap.: Bucharest. Romanian, România /rddaw mu nyah/. * * * Romania Introduction Romania Background: Soviet… …
53România — /rddaw mu nyah/; Eng. /roh may nee euh, mayn yeuh/, n. Romanian name of ROMANIA. * * * Romania Introduction Romania Background: Soviet occupation following World War II led to the formation of a Communist peoples republic in 1947 and the… …
54climate change — Introduction periodic modification of Earth s climate brought about as a result of changes in the atmosphere as well as interactions between the atmosphere and various other geologic, chemical, biological, and geographic factors within the Earth …
55Auschwitz concentration camp — Auschwitz and Auschwitz Birkenau redirect here. For the town, see Oświęcim. Distinguish from Austerlitz. Or see Auschwitz (disambiguation) Auschwitz Concentration camp …
56Fuel cell — For other uses, see Fuel cell (disambiguation). Demonstration model of a direct methanol fuel cell. The actual fuel cell stack is the layered cube shape in the center of the image A fuel cell is a device that converts the chemical energy from a… …
57Dates of 2007 — ▪ 2008 January Ladies and gentlemen: on this day, at this hour, it is still within our power to shape the outcome of this battle. Let us find our resolve, and turn events toward victory. U.S. Pres. George W. Bush, asking for support for his… …
58naval ship — Introduction the chief instrument by which a nation extends its military power onto the seas. Warships protect the movement over water of military forces to coastal areas where they may be landed and used against enemy forces; warships… …
59petroleum refining — Introduction conversion of crude oil into useful products. History Distillation of kerosene and naphtha The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …
60Components of jet engines — Diagram of a typical gas turbine jet engine. Air is compressed by the fan blades as it enters the engine, and it is mixed and burned with fuel in the combustion section. The hot exhaust gases provide forward thrust and turn the turbines which… …
