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X400


'X400' can also refer to...

X400

X400

0x400A

Faustus [Faustus of Riez] (400x410-c. 490), bishop of Riez and theologian

The X-Ray Structure of the Supernova Remnant 3C 400.2

Abnormal N400 word repetition effects in fragile X-associated tremor/ataxia syndrome

Simulated X-ray emission from a single-explosion model for a supernova remnant 3C 400.2

William J. Connell. La città dei crucci: Fazioni e clientele in uno stato repubblicano del '400. Florence: Nuova Toscana. 2000. Pp. x, 318. L. 30,000

Jian Chen. Mao's China and the Cold War. (The New Cold War History.) Chapel Hill: University of North Carolina Press. 2001. Pp. x, 400. Cloth $49.95, paper $19.95

Measuring the Broad-Band X-Ray Spectrum from 400eV to 40keV in the Southwest Part of the Supernova Remnant RXJ1713.7[math]3946

The Day Wall Street Exploded: A Story of America in Its First Age of Terror. By Beverly Gage. (New York: Oxford University Press, 2009. x, 400 pp. $27.95, ISBN 978-0-19-514824-4.)

Daniel G. Russo. Town Origins and Development in Early England, c. 400–950 A.D. (Contributions to the Study of World History, number 58.) Westport, Conn.: Greenwood. 1998. Pp. x, 309. $65.00

Darel Tai Engen Honor and Profit: Athenian Trade Policy and the Economy and Society of Greece, 415–307 b.c.e. Ann Arbor: University of Michigan Press. 2010. Pp. x, 400. $85.00.

Daniel R. Headrick. Power over Peoples: Technology, Environments, and Western Imperialism, 1400 to the Present. (The Princeton Economic History of the Western World.) Princeton: Princeton University Press. 2010. Pp. x, 400. $35.00

Saki Dockrill. Eisenhower's New-Look National Security Policy, 1953–61. New York: St. Martin's. 1996. Pp. xvi, 400. $59.95 and Peter J. Roman. Eisenhower and the Missile Gap. (Cornell Studies in Security Affairs.) Ithaca: Cornell University Press. 1995. Pp. x, 264. $35.00

 

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A standard for email developed by the International Standards Organization. The development of this standard was a long process and it was released just as the Internet was exploding in size and well after a number of TCP-IP-based mail programs had been released. The consequence is that the number of X400 users is very much smaller than users of protocols such as SMTP, and is confined to governmental users. X400 is associated with a sister standard, X500, which specifies directory services. It is expected that this standard will be obsolete by 2005.

Subjects: Computing.


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