Hydroxycitric acid (HCA), a derivative of citric acid, is found primarily in a small, sweet, purple fruit called the Malabar tamarind or, as it is most commonly called, Garcinia cambogia.hat Is the Scientific Evidence for Hydroxycitric Acid? It remains unclear whether HCA offers any weight-loss benefits. In an 8-week double-blind, placebo-controlled trial of 60 overweight individuals, use of HCA at a dose of 440 mg 3 times daily produced significant weight loss as compared to placebo.
Reasonâs âSwiss Cheeseâ Model of Human Error One particularly appealing approach to the genesis of human error is the one proposed by James Reason (1990). Generally referred to as the âSwiss cheeseâ model of human error, Reason describes four levels of human failure, each influencing the next (Figure 1).
Johann Rudolf Glauber (10 March 1604 â 10 March 1670) was a German-Dutch alchemist and chemist. Some historians of science have described him as one of the first chemical engineers. His discovery of sodium sulfate in 1625 led to the compound being named after him: Glauber's salt.e worked first manufacturing mirrors and later for two periods as Apothecary to the court in Giessen, the second time as the Chief Apothecary, leaving because of the Thirty Years War. In Amsterdam he built up a business manufacturing pharmaceuticals (including chemicals such as Glauber's salt).