Review of neurocysticercosis.

Carbon dioxide (CO2), a main composition of flue gas, represents a significant and largely untapped carbon resource. Herein, mediated by glycine (Gly), we captured and converted CO2 into CaCO3 nanoparticles using a real flue gas from a power plant, first time demonstrating the feasibility of using amino acid to convert CO2 from power plant flue gasses. The method did not require extraneous energy and CaCO3 nanoparticles with a size of ~25 nm were obtained. Moreover, the potential toxicity of CO2-converted nanoparticles was investigated. It appeared that both the initial CO2 loading and the carbamate percentage significantly influence the shape and size of the CaCO3 particles. Our method was also proved effective for flue gas with varying CO2 concentrations (4%, 12%, and 20%). By tuning flue gas bubbling time and flow rate to achieve consistent CO2 loading and carbamate levels, we produced CaCO3 nanoparticles with similar shapes and sizes across all CO2 concentrations studied. In addition, our data indicated that although real flue gas contains small amounts of gases like oxygen and CO, they insignificantly influence the shape and size of our nanoparticles but did impact the phase component of CaCO3. The toxicity experiments found that CaCO3 nanoparticles produced from both real flue gas and simulated flue gas exhibited concentration- and time-dependent effects on cell viability.