Аналіз текстури фрактографічних зображень на основі спектра фрактальних розмірностей Реньї

У статті досліджено застосування спектра фрактальних розмірностей Реньї для аналізу текстури фрактографічних зображень. Запропоновано використовувати цей підхід для класифікації типів зламів.В статье исследовано применение спектра фрактальных размерностей Реньи для анализа текстуры фрактографических изображений. Предложено использовать этот подход для классификации типов изломов.Investigated the use of the spectrum of fractal dimensions Renyi for texture analysis fraktohraphic images. Proposed to use this approach for the classification of types of fractures

Incidence and level of Salmonella serovars in raw pork obtained from mexican butcher shops

Rhizopus homothallicus (IRD13a) was cultivated for lipase production in solid state fermentation (SSF) using sugarcane bagasse as a support and impregnated with a liquid medium. The production of an extracellular lipase from Rh. homothallicus was improved by modification of media nutrients. The nutrients that mainly influenced growth and lipase production were urea, olive oil and oligo-elements. Kinetics of growth and lipase production were carried out using the improved medium. A correlation was found between the lipase production profile and the profiles of CO2 production, O2 consumption and pH changes. A maximum of 826 U/g DM was reached in only 12 h of incubation. This production represented a 60-fold increase of lipolytic activity compared to that obtained using a well known medium for lipase production. These results are promising because this strain produces high lipase concentrations in an inexpensive and simple medium, which facilitates its recovery and purification. Lipase extraction from the fermented solid was also studied. Efficient recovery of the enzyme was achieved using Triton X-100 at 0.5% (w/v). " 2006.",,,,,,"10.1016/j.procbio.2006.05.017",,,"http://hdl.handle.net/20.500.12104/42123","http://www.scopus.com/inward/record.url?eid=2-s2.0-33749339240&partnerID=40&md5=7094169e4bc3003e238ee9fd3b9ef938",,,,,,"11",,"Process Biochemistry",,"226