107 resultados para Spanish language -- To 1500 -- Word order -- Congresses


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Uranium is a ductile metal and cannot be comminuted to a fine powder by any mechanical means such as crushing, milling or grinding. Uranium, however, reacts readily with hydrogen and forms UH3, which is a fine powder of less than 400 mesh screen size. The factors controlling the rats of the hydride formation are: (a) The surface area of the metal; (b) the temperature at which the reaction takes place; (c) the pressure of hydrogen. In order to increase the reaction area, one has to hydride small metal pieces rather than a single mass. The hydrogen reacts with uranium metal at temperatures as low as 100 deg to 1500 deg, and the reaction rate becomes quite rapid at approximately 225 deg C. The hydrogen for this purpose has to be of high purity and any small amount of oxygen in hydrogen delays the start of the reaction.

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Mode of access: Internet.

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Mode of access: Internet.

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Mode of access: Internet.

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At head of title: Seoane's Neuman and Baretti--by Velazquez.

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Mode of access: Internet.

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Pt. 2 has t.p. in Spanish.

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Chronological tables and indexes in v. 6.

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Bibliography: leaf at end.

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Mode of access: Internet.

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This activity book is designed to supplement the information provided in the A to Z From a Tree, Illinois Fall Colors, Illinois' Forestry Industry and Illinois Trees : Seeds and Leaves posters from the Illinois Department of Natural Resources (IDNR). When using this activity book, students will become familiar with many characteristics of trees, industries related to trees and products made from trees. The information and activities included can assist your students of grades kindergarten through three in meeting the Illinois Learning Standards listed below. Although it is not necessary to have a copy of the posters named above to complete this activity book, if you would like them, they can be ordered online. Go to http://dnr.state.il.us then click on the "Education" button in the right side box. You'll find the link to the online order form.

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Contains 32 Spanish language pamphlets which use a Q and A (Question/Answer) format to provide information on various women's health topics.