1,132 research outputs found
Consumption of glycerol as co-substrate of glucose in continuous cultures of Clostridium acetobutylicum atcc 824
Stability of high solvent producing continuous cultures of clostridium cetoeiutylicum on mixtures of glucose and glycerol
Effect of biogenic and abiogenic organic acids on the growth rate of clostridium Acetobutylicum atcc 824
Glycerol bioconversion to 1,3-propanediol by Clostridium butyricum in continuous cultures with cell recycle
Fermentation of Low Grade Glycerol by Clostridium butyricum and Clostridum acetobutyllcum Strains
On-line Oxidation Of Cr(lll) To Cr(vi) For Use With The Flow Injection Analysis Technique
An on-line procedure for the oxidation of Cr(III) to Cr(VI) was developed. The extent of oxidation was followed using the 1,5-diphenylcarbazide (DPC) spectrophotometric method accommodated in a flow injection analysis (FIA) system. Cerium(IV) sulphate and potassium peroxydisulphate were tested as oxidising agents. Despite the high oxidation power of the peroxydisulphate ion in acidic solution, the use of Ce(IV) is more convenient under dynamic conditions. The best experimental conditions were obtained at 45°C using a 0.025% m/\/Ce(IV) solution in 0.07 M H2SO4 with the Cr(III) solutions containing up to 3.0 × 10-2 M H 2S04.109564564
Utilização de misturas de glucose e glicerol como fonte de carbono em culturas de clostridium acetobutylicum
Reference Ontology and (ONTO)2 Agent: The Ontology Yellow pages
Knowledge reuse by means of ontologies faces three important problems at present: (1) there are no standardized identifying features that characterize ontologies from the user point of view; (2) there are no web sites using the same logical organization, presenting relevant information about ontologies; and (3) the search for appropriate ontologies is hard, time-consuming and usually fruitless. To solve the above problems, we present: (1) a living set of features that allow us to characterize ontologies from the user point of view and have the same logical organization; (2) a living domain ontology about ontologies (called Reference Ontology) that gathers, describes and has links to existing ontologies; and (3) (ONTO)2Agent, the ontology-based WWW broker about ontologies that uses Reference Ontology as a source of its knowledge and retrieves descriptions of ontologies that satisfy a given set of constraints
Alternant and BCH codes over certain rings
Alternant codes over arbitrary finite commutative local rings with identity are constructed in terms of parity-check matrices. The derivation is based on the factorization of x s - 1 over the unit group of an appropriate extension of the finite ring. An efficient decoding procedure which makes use of the modified Berlekamp-Massey algorithm to correct errors and erasures is presented. Furthermore, we address the construction of BCH codes over Zm under Lee metric.23324
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