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...

Kinetics of single cell protein production from natural gas by a microorganism (a Methylomonas sp.) was studied experimentally and by modeling at equal amount of air and natural gas. Kinetic models of Monod, Moser, Teissier, Aiba, Andrews, and Noack were used for illustrating cell growth. Methane and oxygen were considered as limited substrates with concentration in the range 2-10 mg/lit. Death...

The variety of kinetics expressions encountered in the literature and the unreasonably broad range of values reported for the kinetics constants of Acidithiobacillus ferrooxidans underscore the need for a unifying experimental procedure and for the development of a reliable kinetics equation. Following an extensive and critical review of reported experimental techniques, a method based on batch...

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...

Purpose. The main purpose of the article is to develop a numerical model for analysis process biological wastewater treatment in reactor with mobile biocenosis. Methodology. For mathematical modeling moving biocenosis, hydrodynamic non-viscous vortex-free flow used. We calculated boundary conditions equation on surfaces bioreactor, solid walls, and upper surface; at inlet boundary; outlet from ...

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.

Periphyton is a key component of the Everglades ecosystems. It is a major primary producer, providing food and habitat for a variety of organisms, contributing material to the surface soil, and regulating water chemistry. Periphyton is sensitive to the phosphorus (P) supply and P enrichment has caused dramatic changes in the native Everglades periphyton assemblages. Periphyton also affects P av...

A mathematical model was developed to describe batch and continuous fermentation of glucose to organic acids with Clostridium tyrobutyricum. A modified Monod equation was used to describe cell growth, and a Luedeking-Piret equation was used to describe the production of butyric and acetic acids. Using the batch fermentation equations, models predicting butyric acid selectivity for continuous fe...