Abstract: A method for producing metal carbonate is disclosed. The method includes the following steps of providing a first mixture of metal and a catalyst containing iron, NO groups, and N-containing ligands first; then introducing carbon dioxide to the first mixture to form a second mixture and obtaining a product. The method described here can improve the yield and decrease the cost of metal carbonate production.

Abstract: A method for producing metal carbonate is disclosed. The method includes the following steps of providing a first mixture of metal and a catalyst containing iron, NO groups, and N-containing ligands first; then introducing carbon dioxide to the first mixture to form a second mixture and obtaining a product. The method described here can improve the yield and decrease the cost of metal carbonate production.

Abstract: A time-released medication for applying to crustacean ovarian development comprises a covering oil and a serotonin-related reagent. The covering oil is coated with the serotonin-related reagent and provides a sustainable releasing effect for the serotonin-related reagent. The serotonin-related reagent is selected from a group of serotonin, a precursor of serotonin, a derivative of serotonin and an agonist of serotonin. The coating relationship between the serotonin-related reagent and the covering oil makes them become a time-released medication.