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 ?
Although a study in 1953 concluded that DES didn't reduce the miscarriage rate, and actually seemed to increase it slightly, physicians continued to give the hormone to pregnant women until 1971.
DES daughters interviewed said they are concerned about the current trend of marketing pharmaceuticals directly to consumers.
This commitment is one of the primary reasons the SCO researchers have developed these innovative approaches to DES treatment.
Children exposed to DES in utero developed abnormalities and cancer of the reproductive tract, whereas these effects were not found in their mothers (Herbst et al.
Denison Environmental Services (DES) is a contracting group based, in Elliot Lake, specializing in all aspects of mine closure and decommissioning DES is a division of' Denison Mines Limited, a company that operated the largest underground uranium mine in the Western Hemisphere.
This seminar will be a crash course in Triple DES that will give participants the knowledge they need to plan their Triple DES implementations," he continues.
With the help of ACI's Security Optimization Service (SOS) consulting services, Metavante is ACI's first customer to add the new Transaction Security Services module to its BASE24 production environment to launch Triple DES processing services.
3 JOURNAL OF THE NATIONAL CANCER INSTITUTE, 10 of the 98 cancers among offspring of mice on the high-fat diets -- including many whose mothers received no DES -- spread to other organs.
Sanders, also at the Kinsey Institute, began their investigation by recruiting 10 male subjects age 9 to 21 who had been exposed to DES in the womb but who showed no signs of DES-related birth defects.
cvPipeline's DES sector was developed by experienced medtech journalists through the systemic, methodical synthesis of publicly available information, supplemented by exclusive interviews with company executives, investigators, and top clinicians in the field.
DES MOINES, Iowa -- The Principal Financial Group(R) announces an agreement to be the title sponsor for the annual Champions Tour event played in Des Moines.
The researchers note that 15 percent of the men whose mothers had taken DES reported genital malformations (mostly minor ones, such as epididymal cysts).