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Tuzla

(Encyclopedia)Tuzla to͞ozˈlä [key], city (2013 pop. 80,570), in Bosnia and Herzegovina. Various fruits are grown in the vicinity, lignite and salt are mined, and some oil is extracted; there is a chemical plant....

Yibin

(Encyclopedia)Yibin ē-bĭn [key], city (1994 est. pop. 261,300), S Sichuan prov., China. It is a commercial and communications center at the junction of the Min and the Chang rivers, the last port for upriver traf...

Wuzhou

(Encyclopedia)Wuzhou wo͞oˈjōˈ [key], city (1994 est. pop. 236,200), E Guangxi Zhuang Autonomous Region, S China, a port on the Xi River at the mouth of the Gui River. It is an important trade and shipping cente...

Whitehaven

(Encyclopedia)Whitehaven hwītˈhāvən [key], town (1991 pop. 27,512), Cumbria, NW England, at the mouth of Solway Firth. Whitehaven is a seaport and industrial town. There are chemical works, iron foundries, and ...

Brus, Louis

(Encyclopedia)Louis Brus, 1943– , b. Cleveland, Ohio, American chemist, studied at Rice University (B.S., 1965) and Columbia University (Ph.D., 1969). He is Samuel ...

sneeze gas

(Encyclopedia)sneeze gas, poison gas used in riot control and chemical warfare. It is highly irritating to the nose and throat; inhalation of the substance causes sneezing and coughing, but rarely causes permanent ...

Rauma

(Encyclopedia)Rauma rouˈmä [key], Swed. Raumo, city (1996 pop. 37,914), Western Finland prov., SW Finland, on the Gulf of Bothnia. It is Finland's leading western port and has wood, paper, chemical, leather, muni...

tear gas

(Encyclopedia)tear gas, gas that causes temporary blindness through the excessive flow of tears resulting from irritation of the eyes. The gas is used in chemical warfare and as a means for dispersing mobs. Compoun...

tissue culture

(Encyclopedia)tissue culture, the propagation of plants through the placement of small amounts of undifferentiated tissue or single cells in an artificial environment. The tissue is placed in a nutrient medium that...

Polanyi, John Charles

(Encyclopedia)Polanyi, John Charles, 1929–, Canadian chemist. Raised and educated in England, he worked as a researcher in Canada before taking a teaching position at the Univ. of Toronto in 1956. He used spectro...