Abstract: The present application disclosed a compound of formula (I) and a salt and a stereoisomer thereof, wherein each variable is as defined in the specification. The present application also disclosed a nanoparticle composition comprising the compound or a salt or a stereoisomer thereof, and the use of the nanoparticle composition for delivering active agents.

Abstract: The present application disclosed a compound of formula (I) and a salt and a stereoisomer thereof, wherein each variable is as defined in the specification. The present application also disclosed a nanoparticle composition comprising the compound or a salt or a stereoisomer thereof, and the use of the nanoparticle composition for delivering active agents.

Abstract: The present invention relates to a long chain alkyl esteramine lipid compound as shown in Formula I, preparation method therefor as well as use thereof in nucleic acid delivery, the long chain alkyl esteramine lipid compound provided by the present invention has an excellent encapsulation rate and delivery effect as a lipid molecule in delivering disease treatment or preventive agents, showing lower toxicity and certain tissue distribution characteristics, and providing a basis of more selections for delivering disease therapeutic or prophylactic agents.

Abstract: Provided is a magnetically controlled smart sorting device for container lockpins, and a control method therefor. In the magnetically controlled smart sorting device for container lockpins, a bidirectional retractable component (1) is provided at an upper end of a guide cylinder (3), the bidirectional retractable component (1) is connected to a bidirectional retractable component linkage (2), the bidirectional retractable component linkage (2) is connected to a guide column (4), a universal joint (5) is fixedly mounted on the lower portion of the guide column (4), and the lower portion of the universal joint (5) is connected to a magnetically controlled gripper (6). At least one magnetically controlled head (7) is attached to the lower portion of the magnetically controlled gripper (6), and each magnetically controlled head (7) is configured to attract a selected lockpin when the magnetically controlled gripper (6) presses against the selected lockpin.

Abstract: A dechlorinating agent for blast furnace top gas prepared by the steps of: selecting industrial limestone, commercial sodium carbonate and potassium hydroxide; soaking the raw industrial limestone in a potassium hydroxide solution, wherein a concentration of the potassium hydroxide solution is 10%-15%; heating the soaked limestone at 700° C. for calcination; grinding the light-burned limestone obtained by calcining the limestone and sodium carbonate until the particle size is below 20 ?m; mixing the light-burned limestone and the sodium carbonate at a proportion of 30-70:70-30 for 10-15 min; grinding the resultant mixture by milling process until the particle sizes of all powders are less than 80 ?m; adding 3% bentonite in the prepared mixing powder and fully mix the mixture; pelletizing the mixture with atomized water using a disc pelletizer; and selecting pellets of 3-10 mm in size; drying the said pellet at a temperature below 100° C.

Abstract: A dechlorinating agent for blast furnace top gas prepared by the steps of: Selecting industrial limestone, commercial sodium carbonate and potassium hydroxide; Soaking the raw industrial limestone in a potassium hydroxide solution, wherein the concentration of the potassium hydroxide solution is 10%-15%; Heating the soaked limestone at 700° C. for calcination; Grinding the light-burned limestone obtained by calcining the limestone and sodium carbonate until the particle size is below 20 ?m; Mixing the light-burned limestone and the sodium carbonate at a proportion of 30-70:70-30 for 10-15 min; Grinding the resultant mixture by milling process until the particle sizes of all powders are less than 80 ?m; Adding 3% bentonite in the prepared mixing powder and fully mix the mixture; Pelletizing the mixture with atomized water using a disc pelletizer; and selecting pellets of 3-10 mm in size; Drying the said pellet naturally or at a temperature below 100° C.