Abstract: A refrigerator includes a drawer in a refrigeration compartment including a support on a wall of the compartment, and a work slot oblique to a lid. The lid opens or closes the drawer and includes a protruding portion on an upper surface and a motion member on a side edge of the lid moving in the work slot. A motor module includes a cam and a motor driving the cam in first rotation, to push the protruding portion to drive the motion member to move obliquely upward along the work slot, so the lid ascends to a first position, and driving the cam in second rotation opposite the first to cause the lid to drive the motion member under gravity obliquely downward along the work slot, so the lid descends to a second position lower than the first in automatically adjustment. A method for lid adjustment is also provided.

Abstract: A refrigerator has a refrigeration compartment, a drawer located inside the refrigeration compartment, and a lid adapted to open or close the drawer. The refrigeration compartment includes: a support module, mounted on an inner side wall of the refrigeration compartment, where the support module includes an elastic member; and a motor module, including a motor, a cam, and a connection portion connected to the lid and the cam. The motor drives the cam to generate a first rotation to push the connection portion to move upward, to cause the lid to compress upward the elastic member, so that the lid ascends to a first position. The motor further drives the cam to generate a second rotation to push the connection portion to move downward, to cause the connection portion and the elastic member to push downward the lid, so that the lid descends to a second position.

Abstract: The present invention relates to a crystalline form of entecavir and its process for preparation, and provides a pharmaceutical composition comprising a therapeutically effective amount of the crystalline form of entecavir. Furthermore, the present invention also provides a use of the crystalline form of entecavir in preparation for a medicament for the treatment of hepatitis B viral infections. The present invention is beneficial toe preparations for pharmaceutical formulations and enhancements of its bioavailability.

Abstract: The present invention provides 2,6-dinitrogen-containing substituted purine compounds of formula (A) or salts or solvates thereof or the solvates of salts thereof, as well as pharmaceutical compositions containing such compounds. The compounds of the present invention have the characteristics of lower toxicity, broad anticancer spectrum, higher anticancer activity, good stability and the like. The compounds are useful for the manufacture of an antitumor medicament. The present invention also provides a process for preparing these compounds.

Abstract: The present invention provides 2,6-dinitrogen-containing substituted purine compounds of formula (A) or salts or solvates thereof or the solvates of salts thereof, as well as pharmaceutical compositions containing such compounds. The compounds of the present invention have the characteristics of lower toxicity, broad anticancer spectrum, higher anticancer activity, good stability and the like. The compounds are useful for the manufacture of an antitumor medicament. The present invention also provides a process for preparing these compounds.