(FACE) facilities represents a substantial advance in experimental technology for studying ecosystem responses to elevated CO2. A challenge arising from the application of this technology is the utilization of short-term FACE results for predicting long-term ecosystem responses. This modeling study was designed to explore interactions of various processes on ecosystem productivity at elevated C...

Sustainable future energy scenarios require significant efficiency improvements in both electricity generation and storage. High-temperature solid oxide cells, and in particular carbon dioxide electrolysers, afford chemical storage of available electricity that can both stabilize and extend the utilization of renewables. Here we present a double doping strategy to facilitate CO2 reduction at pe...

Cyanobacteria have attracted much attention as hosts to recycle CO2 into valuable chemicals. Although cyanobacteria have been engineered to produce various compounds, production efficiencies are too low for commercialization. Here we engineer the carbon metabolism of Synechococcus elongatus PCC 7942 to improve glucose utilization, enhance CO2 fixation and increase chemical production. We introd...

The effect of L-carnitine on in vivo fatty acid utilization was determined using colostrum-deprived newborn piglets fed emulsified triglycerides (TG) composed of [1-C]octanoate (tri-8:0) or [1-C]octadecanoate (tri-18:1). A soy protein–based liquid diet devoid of L-carnitine was fed piglets for 1 d to allow development of fatty acid–metabolizing enzymes and intestinal fat digestion and absorptio...

The uptake and utilization of [1-14C]glycerol was determined in pieces of rat epididymal fat-pads incubated in Krebs--Ringer bicarbonate buffer containing albumin. Insulin (200 muunits/ml), adrenaline (epinephrine; 0.5 mug/ml) and glucose (0, 5, 15 and 20 mM) were added to the medium. Changes in the specific radioactivity of the tracer during the incubation were taken into account in calculatin...

The rates of utilization and oxidation of glutamine and glucose by oesophageal and duodenal tissues have been investigated in both rats and human subjects. In the rat, glutamine utilization by oesophageal tissue was 2-3-fold lower than that in the duodenum, and this substrate contributed less than 10% to the total oxidative metabolism of the tissue, even when glutamine was the only substrate pr...

CO2 utilization for oil recovery applications is often impacted by the challenges such as viscous fingering and its premature breakthrough. Injection of slugs water-alternating-gas (WAG) generally aims to overcome these though control mobility. Moreover, potential WAG largely dependent on injection water salinity subsequent dissolution storage. Therefore, effect varying (0–4 wt% NaCl) loading c...

Gasification technology has been investigated to effectively and economically convert lowvalue and highly distributed solid biomass to a uniform gaseous mixture mainly including hydrogen (H2), carbon monoxide (CO), methane (CH4) and carbon dioxide (CO2). This gaseous mixture can be further used as an industrial feedstock for heat and power generation, H2 production and synthesis of liquid fuels...