Five life test results

Figure 2.15 Life test results for a five-cell stack at 60°C for the initial 200 h.Thestackwasfed with aO.5 M methanol solution feed at 20 mL min at the anode and with 0.76 atm dry air at 1.5 SLPM at the cathode.

Figure 2.16 Life test results for a five-cell stack at 60°C for the entire 1150h.

The battery system has reached more than 1700 cycles in life cycle tests. The calendar life of the /zebra battery has been proven to be close to five years in a continuing life test. In practical operation in cars the ZEBRA battery exceeded 110000 km within a three year period. This excellent result proves the ZEBRA battery to be a reliable system. 

This chapter summarizes the methods and results of seven studies (1-7) in which the author examined the acute or chronic effects of marijuana on human associative processes and memory. Both semantic and episodic memory were examined. Semantic memory refers to memory for meanings of words, concepts, rules, abstract ideas, and so on, whereas episodic memory refers to memory for temporally dated episodes or events in a person s life, e.g., autobiographical information (8). Associative processes, semantic memory, and episodic memory were examined using three, three, and five different tests, respectively. The tests of associative processes, semantic memory, and episodic memory are listed in Tables 1-3, respectively, along with information about the results, the type of marijuana effects studied (i.e., acute or chronic), characteristics of subjects, periods of abstinence from marijuana use prior to testing, and doses of marijuana that were administered, if any. The results and other information in the tables may pro-... 

Example 5 Multiple-Factor Stability Study A well-known example introduced by Shao and Chow [19] is used to illustrate the application of shelf life calculations for a multifactor case. A stability study was conducted on a 300-mg tablet of a drug product to establish the shelf life for each of the two types of packages used for this product bottle and blister. The results are shown in Table 24. Each type of package includes five batches. The tablets were tested for potency at 0, 3, 6, 9,12, and 18 months. Determine the shelf life based on these stability data. 

The results of this study showed that flash pyrolysis subbituminous coal tar can be hydrorefined. Ni-Mo supported on alumina was the most effective catalyst for hydrorefining flash pyrolysis subbituminous coal tar among the five types of catalysts tested. The removal of asphaltenes and preasphaltenes was easy to achieve. Catalyst selection should emphasize heteroatoms removal efficiency and hydrogen consumption. The catalyst life is an equally important selection criterion although this program has not completed catalyst-life studies. It will be determined in the future. 

In a randomized, double-blind, placebo-controlled, crossover study in 10 healthy men, itraconazole 200 mg/day for 4 days significantly altered the pharmacokinetics of a single dose of brotizolam 0.5 mg it reduced the apparent oral clearance four-fold, increased the AUC0 24h more than two-fold, and prolonged the half-life five-fold (6). The digit symbol substitution test and sleepiness were significantly altered as a result. 

Five of the points (1, 8, 9, 10, 12 excluding Na HPO. points) are "zero-points , i.e. median survival time exceeded the life of the experiment, and a better test of the hypothesis of toxicity due to copper species results from discarding the zero-points. 

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