DES

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DES

or

diethylstilbestrol

(dī'ĕth'əlstĭlbĕs`trôl), synthetic nonsteroid female sex hormone having the same physiological effects as estrogenestrogen
, any one of a group of hormones synthesized by the reproductive organs and adrenal glands in females and, in lesser quantities, in males. The estrogens cause the thickening of the lining of the uterus and vagina in the early phase of the ovulatory, or menstrual, cycle
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. In the 1940s and 50s DES was mistakenly believed to reduce the risk of miscarriage and was routinely prescribed for pregnant women believed to be at risk. In fact, it was later found to increase the risk of miscarriage and was then tested in a "morning-after" pill, a contraceptive pill that is taken after intercourse. In the late 1960s and early 70s a group of Boston physicians found that women whose mothers had taken DES during pregnancy had an unusually high rate of vaginal cancer, and it has since been implicated in various reproductive disorders and other conditions in female and male children of such mothers. The use of DES to prevent miscarriage was banned in 1973; its use as a growth accelerator in beef cattle was banned in 1979. It currently finds some use in the hormone treatment of certain types of cancercancer,
in medicine, common term for neoplasms, or tumors, that are malignant. Like benign tumors, malignant tumors do not respond to body mechanisms that limit cell growth.
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.

DES

(communications)
(biochemistry)

DES

DES

(1) (Digital Entertainment System) See digital media server.

(2) (Data Encryption Standard) A NIST-standard cryptographic cipher that uses a 56-bit key. Adopted by the NIST in 1977, it was replaced by AES in 2001 as the official standard. DES is a symmetric block cipher that processes 64-bit blocks in four different modes of operation, with the electronic code book (ECB) being the most popular.

Triple DES
By adding various multiple-pass methods, Triple DES increased security; for example, encrypting with one key, decrypting the results with a second key and encrypting it again with a third. However, the extra passes added considerable computing time to the process. DES is still used in applications that do not require the strongest security. See cipher, cryptography, NIST, AES and Fortezza.
References in periodicals archive ?
Previous research highlights the usefulness of such subjective measures since they exhibit strong reliability and validity, and are particularly useful for assessing broader, nonfinancial dimensions of performance, too (Chandler & Hanks, 1993; Dess & Robinson, 1984).
Fig.5 illustrates the whole flow diagram of the proposed DISS and DESS algorithms combined together.
Each of the attached residential units has its own heat pump or heat pumps, taking energy from the DESS and distributing it to the individual spaces.
For the preparation of the dried samples, the DESs were maintained for at least 4 days in a Schlenk under high vacuum (about [10.sup.-1] Pa) at room temperature, while for the water-saturated samples, the DESs were maintained for one month in contact with air [5].
Furthermore, the excess water made the ChCl/1,4-Buta (DES-1) diluted, which might result in the disruption of hydrogen bonds of DESs components and the loss of the supermolecular structure consequently [31].
For more information on DESS components, please visit us at www.dess-usa.com or call 855 337-7872.
As gainsharing agreements between cardiologists and their hospitals were largely nonexistent during our study period (Wilensky, Wolter, and Fischer 2007), we believe cardiologists were not directly sensitive and possibly indifferent about the incremental costs associated with adopting DESs. In addition, cardiologist payments from the Centers for Medicare & Medicaid Services (CMS) did not vary by stent type, meaning there was no financial incentive pushing them to use DES technology.
Despite the existing CE dimensions, Lumpkin and Dess further suggested two new dimensions, which are autonomy and proactiveness.
Selection of DESs. The choice of extraction method and type of DESs were very important for extracting COG, AOG, and AOR from red hot chili peppers.
proposed diagnosability in DESs [1], many algorithms about failure diagnosis were proposed.