During a fermentation process, the formation of the desired product during the cell growth phase competes with the biomass for substrates or inhibits cell growth directly, which results in a decrease in production efficiency. ...

The propagation properties of mid-latitude Rossby waves are well known and are usually revealed in terms of the dispersion equation either in its diagnostic or wave normal forms, both of which show that phase propagation ...

Coupling lactate fermentation with cell growth was investigated in shake-flask and bioreactor cultivation systems by increasing aeration to improve lactate productivity in Escherichia coli CICIM B0013-070 (ackA pta pps ...

We outline models for the interaction between high- and low-frequency waves that arise in plasma physics and atmosphere/ocean dynamics. The original ideas are embodied in the Zakharov equations, which describe the interaction ...

Hypoxis rigidula Baker var. rigidula and Hypoxis hemerocallidea Fisch., C.A.Mey. & Avé-Lall (Hypoxidaceae) are frequently used African medicinal plant that has been used by traditional healers for daily healthcare needs. ...

In the title compound, C33H32N2O2, the tetrahydropyridine ring adopts a boat conformation with the carbonyl group in an s-cis conformation with respect to the C=C bond of the six-membered tetrahydropyridine ring. The ...

In the title compound, C20H16Cl2N4O2, the dihedral angles between the planes of the chlorophenyl, chlorocyanophenylimine and ester groups and the plane of the six-membered tetrahydropyrimidine ring are 86.9 (2), 72.6 (2) ...

Nonlinear ion cyclotron and ion-acoustic waves have been studied in an electron–positron–ion plasma. Using Boltzmann distributions for the electrons and positrons and fluid equations for the ions, a set of nonlinear equations ...

A new quinoline alkaloid has been isolated from the flowers of Feronia limonia along with four alkaloid precursors, one coumarin, a known steroid stigmasterol and p-coumaric acid. The structures of compounds have been ...

An easy one pot microwave assisted synthesis of 3-acyl-2,4-dihydroxyquinoline from simple precursors followed by convenient synthesis of novel and potential HIV integrase inhibitors 7-methyldibenzo[c,f][2,7]naphthyridin-6(5H)-ones ...