The observation has been made repeatedly that the induced synthesis of many different enzymes can be inhibited by a wide variety of carbohydrates (Benzer, 1953; Cohn, 1957, 1958; Epps and Gale, 1942; Gale, 1943; Happold and Hoyle, 1936; Herzenberg, 1958; Monod, 1941, 1947, 1956; Monod and Cohn, 1952; Neidhardt and Magasanik, 1956). One of the most characteristic and potent of these carbohydrate...

This work was aimed at identifying microbials and determining the biokinetic parameters for bio-decontamination of oilfield produced water. An extant physical treatment unit water re-engineered retrofit with a discontinuous aerobic bioreactor (Bio-Unit) system. The Bio-Unit operated in fill-and-draw sequence rates total organic carbon (TOC) removal biomass growth were monitored. isolated microb...

To cite: Sharma S, Dubey SK, Kumar N, et al. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/ bcr-2013-200936 DESCRIPTION A 62-year-old male patient presented with a symptom of haemoptysis for 15 days. There was history of pulmonary Koch’s for which he took complete treatment 11 years ago. In the CT scan of the chest, there was an irregular-shaped cavity in the right ...

This study proposes a mathematical modeling approach for evaluating the effect of applying permanent electric field on biodegradation 1,2-dibromoethane by bacterial cells Bradyrhizobium japonicum 273. Two models inhibited microbial growth including product inhibition were composed—one using Monod–Yerusalimsky and another one—the Levenspiel kinetic equation. The used to process own experimental ...

ion of complex systems in various ways. Thus the subject of lumping of multicomponent, multireaction systems in petrochemical reaction engineering sought to find component clumps whose concentrations would serve to define their rates of change and to see the circumstances under which such simplifications would emerge. Naturally, linear reaction systems could be dealt with more elegance as, for ...

In this study, aerobic digestion of tannery industry wastewater was carried out using mixed culture obtained from common effluent treatment plant treating tannery wastewater. The effect of pH, temperature, inoculum concentration, agitation speed and initial substrate concentration on the reduction of organic matters were found. The optimum conditions for COD reduction was found to be pH 7 (60%)...

Several modified versions of the Monod model have been proposed to simulate algal dynamics in lakes by keeping the parent model’s advantages of simplicity and low data requirement. This study evaluated the performance of a widely-used modified Monod model in predicting algal dynamics at various time scales in Lake Tai, a typical shallow lake in east China, using multiple time series. Chlorophyl...

Identification of mathematical models is an important task for the design and the optimization of biokinetic processes. Monod or Tessier growth-rate models are often chosen by default, although these models are not able to represent the dynamics of all bacterial growth processes. This imperfect representation then affects the quality of the model prediction. This paper introduces an alternative...

The kinetics of induction of the galactozymase of certain yeasts (Spiegelman, 1951) and the permease-3-galactosidase system of Escherichia coli (Monod, 1956) can, under certain conditions, be described as autocatalytic. Essentially two hypotheses have been proposed to account for such findings: (a) that the enzyme-forming system itself is autocatalytically activated (Campbell and Spiegelman, 19...