Evaluating the diagnostic performance of [F]ALF-NOTA-FAPI-04 PET/CT in gastric cancer: a comparative study with [F]FDG PET/CT.

Purpose: To compare the diagnostic value of [F]ALF-NOTA-FAPI-04 positron emission tomography/computed tomography (PET/CT) and F-fluorodeoxyglucose (FDG) PET/CT in gastric cancer.

Methods: This single-center retrospective analysis included 65 patients with gastric cancer who received both [F]FDG and [F]ALF-NOTA-FAPI-04 PET/CT for initial staging or restaging. Histopathological manifestations, typical imaging manifestations, follow-up imaging, and comprehensive clinical assessment were used as reference criteria.

Metabolism mechanisms of biogenic methane production by synergistic biodegradation of lignite and guar gum.

Coalbed methane (CBM) presents a promising energy source for addressing global energy shortages. Nonetheless, challenges such as low gas production from individual wells and difficulties in breaking gels at low temperatures during extraction hinder its efficient utilization. Addressing this, we explored native microorganisms within coal seams to degrade guar gum, thereby enhancing CBM production.

The biochemical mechanism of enhancing the conversion of chicken manure to biogenic methane using coal slime as additive.

To improve the efficiency of methane production from chicken manure (CM) anaerobic digestion, the mechanism of coal slime (CS) as an additive on methane production characteristics were investigated. The results showed that adding an appropriate amount of CS quickened the start of the fermentation and effectively increased the methane yield. In addition, the pH changed in a stable manner in the liquid phase, and the concentrations of total ammonia nitrogen (TAN) and free ammonia nitrogen (FAN) were reduced.

The metabolic process of methane production by combined fermentation of coal and corn straw.

The anaerobic degradation of coal combined with straw biomass can promote the methane production. The biogas production potential and metabolic pathway were explored via the co-digestion simulation experiment of coal and corn straw. The results showed that 2 g of corn straw combined respectively with 4 g of bituminous coal A, 6 g of bituminous coal B and 4 g of bituminous coal C resulted in highest methane yields.

The mechanisms of biogenic methane metabolism by synergistic biodegradation of coal and corn straw.

The mechanisms associated with the biomethane metabolism through the synergistic biodegradation of both coal and corn straw were explored to improve the utilization rate of corn straw. This applies to the filling of the goaf with corn straw and the production of biomethane using indigenous bacteria in the mine water with coal. The results showed that new macromolecular substances (e.