reflux esophagitis has improved dramatically since PPIs became available in 1989. PPIs provide rapid symptomatic relief and heal-ing of esophagitis in the highest percentage of patients. A systematic review of 7 trials that evalu-. Esophagitis Asthma Reflux in infants with laryngomalacia: results of 24-hour double-probe pH monitoring. Otolaryngol Head Neck Surg 1999; 120:860.
Soon after, John Wright of Birmingham, England discovered that potassium cyanide was a suitable electrolyte for gold and silver electroplating. Wright's associates, George Elkington and Henry Elkington were awarded the first patents for electroplating in 1840.
The gold standard is a monetary system in which paper money is freely convertible into a fixed amount of gold. In other words, in such a monetary system gold backs the value of money. Between 1696 and 1812, the development and formalization of the gold standard began as the introduction of paper money posed some problems.