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Metandienone, also known as methandienone or methandrostenolone and sold under the brand name Dianabol (D-Bol) among others, is an androgen and anabolic steroid (AAS) medication which is mostly no longer prescribed.
[2] [6] Ziegler sought a drug without after-effects and hit on an anabolic steroid, methandrostenolone (Dianabol, DBOL), made in the U.S. in 1958 by Ciba. [ 1 ] [ 2 ] Ziegler gave Dianabol to the entire U.S. Olympic weightlifting team in Rome in 1960, but they still lost to the Soviets. [ 6 ]
The absorption rate constant K a is a value used in pharmacokinetics to describe the rate at which a drug enters into the system. It is expressed in units of time −1. [1] The K a is related to the absorption half-life (t 1/2a) per the following equation: K a = ln(2) / t 1/2a. [1] K a values can typically only be found in research articles. [2]
[1] [2] It has a relatively short elimination half-life and mean residence time of 2 days and 4 days, respectively. [1] [2] As such, it has a short duration of action and must be administered two to three times per week. [16] Intramuscular injection of testosterone propionate as an oil solution, aqueous suspension, and emulsion has been ...
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Success rate is the fraction or percentage of success among a number of attempts to perform a procedure or task. It may refer to: Call setup success rate; When success refers to attempts to induce pregnancy, then pregnancy rate is used: Artificial insemination § Success rates; In vitro fertilisation § Success rates
This is a common structure shared by all steroids. [41] The oxygen atom in the lactone bridge replaces a carbon atom at position 2 of the steroid nucleus, classifying oxandrolone as an 2-oxa-steroid. There is a hydroxyl group (-OH) attached at stereo-direction β to carbon 17, which is a characteristic of 17β-hydroxy-steroids. [42]
The crack growth rate behaviour with respect to the alternating stress intensity can be explained in different regimes (see, figure 1) as follows Regime A: At low growth rates, variations in microstructure, mean stress (or load ratio), and environment have significant effects on the crack propagation rates. It is observed at low load ratios ...