This work aims to study the production of the biomass of S. cerevisiae on an optimized medium using date extract as the only carbon source in order to obtain a good yield of the biomass. The biomass production was carried out according to the central composite experimental design (CCD) as a response surface methodology using Minitab 16 software. Indeed, under optimal biomass production conditio...

The metaphor of the "genetic program," indicating the genome as a set of instructions required to build a phenotype, has been very influential in biology despite various criticisms over the years. This metaphor, first published in 1961, is thought to have been invented independently in two different articles, one by Ernst Mayr and the other by François Jacob and Jacques Monod. Here, after a det...

Some of these studies have been reported in a preliminary communication, Hoffee, P., and E. Englesberg, Bacteriol. Proc., 1962, p. 120. Abbreviations: ATP, adenosine triphosphate; aMG, alpha methyl D-glucopyranoside. t Predoctoral Research Fellow, U.S. Public Health Service. l Rickenberg, H. V., G. N. Cohen, G. Buttin, and J. Monod, Ann. Inst. Pasteur, 91, 829 (1956). 2 Cohen, G. N., and J. Mon...

The constant nutrient addition technique has been used extensively to measure nutrient uptake in streams. However, this technique is impractical for large streams, and the pulse nutrient addition (PNA) has been suggested as an alternative. We developed a computer model to simulate Monod kinetics nutrient uptake in large rivers and used this model to evaluate the sensitivity of the PNA technique...

a lab-scale cross flow membrane bioreactor (cf-mbr) was operated to determine the biokinetic coefficients under mlss concentrations of 5000 and 3000 mg/l. the investigation showed that the yield (y), the endogenous decay coefficient (kd), the maximum specific growth rate (μm) and the saturation constant (ks) were 0.276 mg/mg, 0.07 /day, 0.653 /day, and 396.62 mg cod/l respectively for mlss 500...

As Francois Jacob tells it, one afternoon in September 1958, just back from New York, he walked into Jacque Monod’s office at the Pasteur Institute in Paris; he believed he had something exciting to discuss. But he found an unimpressed Monod brusquely dismissive. Tired from his flight, Jacob quickly gave up and went home to bed. The next day he returned re-energized and found an altogether more...

In 2013, Monod introduced a family of Thompson-like groups which provides natural counterexamples to the von Neumann–Day conjecture. We construct characterization conjugacy and an invariant use them compute centralizers in one group this family.

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...

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 ...