983 resultados para Catley, Ann, 1745-1789.


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Mode of access: Internet.

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Signatur des Originals: S 36/G10592

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In this study, an effective microbial consortium for the biodegradation of phenol was grown under different operational conditions, and the effects of phosphate concentration (1.4 g L-1, 2.8 g L-1, 4.2 g L-1), temperature (25 degrees C, 30 degrees C, 35 degrees C), agitation (150 rpm, 200 rpm, 250 rpm) and pH (6, 7, 8) on phenol degradation were investigated, whereupon an artificial neural network (ANN) model was developed in order to predict degradation. The learning, recall and generalization characteristics of neural networks were studied using data from the phenol degradation system. The efficiency of the model generated by the ANN was then tested and compared with the experimental results obtained. In both cases, the results corroborate the idea that aeration and temperature are crucial to increasing the efficiency of biodegradation.

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Almanac containing calendar pages with sporadic annotations of unidentified measurements and interleaved pages with short handwritten entries about Winthrop's daily activities, and astronomical and meteorological observations. The entries include personal notes about travel, the weather, deaths in the community, notes of public fasts for the Louisbourg expedition (February 28) and the "Indian war" (September 19), and a note of the surrender of Louisbourg (June 17). There is an entry listing the burials and baptisms in Boston by month, with the deaths subdivided for white and black individuals, and notes of "French prisoners" for July and "Fever & flux" for September.

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T.-p. lacking. Title taken from Engelmann, W., Bibliotheca scriptorum classicorum.