Dynamic regulation and enhancement of synthetic network for efficient biosynthesis of monoterpenoid α-pinene in yeast cell factory.

Pinene is a plant volatile monoterpenoid which is used in the fragrance, pesticide, and biofuel industries. Although α-pinene has been synthesized in microbial cell factories, the low synthesis efficiency has thus far limited its production. In this study, the cell growth and α-pinene production of the engineered yeast were decoupled by a dynamic regulation strategy, resulting in a 101.

Complete genome sequence of sp. strain PD04, a pyridine-degrading bacterium under hypersaline condition.

We report the complete genome sequence of a pyridine-degrading sp. strain PD04 under 4% salinity environment, isolated from wastewater of coking plant. The genome is 6.

Metabolism of novel potential syntrophic acetate-oxidizing bacteria in thermophilic methanogenic chemostats.

Acetate is a major intermediate in the anaerobic digestion of organic waste to produce CH. In methanogenic systems, acetate degradation is carried out by either acetoclastic methanogenesis or syntrophic degradation by acetate oxidizers and hydrogenotrophic methanogens. Due to challenges in the isolation of syntrophic acetate-oxidizing bacteria (SAOB), the diversity and metabolism of SAOB and the mechanisms of their interactions with methanogenic partners are not fully characterized.

Reaction Behaviors and Crystal Transformation of Industrial Vanadium-Phosphorus-Oxygen (VPO) Catalysts for -Butane Oxidation.

A long-time evaluation of -butane oxidation over an industrial vanadium-phosphorus-oxygen (VPO) catalyst was implemented. The catalytic performances for -butane oxidation during this period were obtained. It was shown that the conversion of -butane increased with the evaluation time, but the selectivity of the maleic anhydride (MA) product decreased gradually.

Functional near-infrared spectroscopy in the evaluation of urban rail transit drivers' mental workload under simulated driving conditions.

The objective of this study is to investigate the potential of functional near-infrared spectroscopy (fNIRS) combined with heart rate variability indices, for the evaluation of the mental workload of urban rail transit drivers under simulated driving conditions, particularly during task engagement and disengagement. Experienced metro drivers wearing fNIRS monitoring systems were asked to drive for 90 min in a professional metro driving simulator. Workload stimulus tasks were added and an n-back task (n = 3) was implemented to induce workload in the simulated driving experiment.