Abstract: Provided are a salt and a crystal form of a pyrimidine compound, and preparation methods therefor. Specifically, provided are a salt and a crystal form of a compound I, including a crystal form of the salt, and preparation methods therefor.

Abstract: The present invention relates to compounds represented by formula (I) and formula (II) and a chiral synthesis and chiral isolation method therefor, further relating to a salt and crystal form of the compound represented by formula (I), a preparation method therefor, a pharmaceutical composition comprising the same, and use thereof in the preparation of a medicament used for the treatment of a viral infectious disease such as hepatitis B.

Abstract: The present invention relates to compounds represented by formula (I) and formula (II) and a chiral synthesis and chiral isolation method therefor, further relating to a salt and crystal form of the compound represented by formula (I), a preparation method therefor, a pharmaceutical composition comprising the same, and use thereof in the preparation of a medicament used for the treatment of a viral infectious disease such as hepatitis B.

Abstract: The present invention relates to a solid form of a compound of Formula (I), a method for preparing the solid form, a pharmaceutical composition comprising the solid form, and the use of the solid form in the treatment of a disease involving abnormal cell proliferation or a viral infectious disease.

Abstract: The present invention relates to a solid form of a compound of Formula (I), a method for preparing the solid form, a pharmaceutical composition comprising the solid form, and the use of the solid form in the treatment of a disease involving abnormal cell proliferation or a viral infectious disease.

Abstract: The present invention discloses a method for preparing controlled release type lutein feed additive. Steps: lutein extract, glycerol and fat are mixed and dissolved, then alkali liquor is dropped under condition of mechanical stirring and sheering emulsification to allow the lutein to be fully saponified. Then fat is added and alkaline saponification is conducted, adjusting the viscosity and neutralizing and conducting spray granulation to the mixed liquor to obtain controlled release lutein feed additive. By utilizing the combined effects of glycerol and fat, the present invention realizes saponification and microcapsule formation using simple method.

Abstract: A method and apparatus for facilitating a buyer driven transaction are provided. The method comprises the steps of registering a seller to receive one or more conditional purchase offers, the seller agreeing to one or more terms to be employed upon entry into a transaction with a buyer upon acceptance of one of the one or more conditional purchase offers, and registering a buyer to submit one or more conditional purchase offers, the buyer agreeing to one or more terms to be employed upon entry into a transaction with the seller upon acceptance of one of the one or more conditional purchase offers. A conditional purchase offer is received from the buyer for a particular defined product, the conditional purchase offer including at least one or more product indicators, a price offer, and an offer expiration. The submitted conditional purchase offer is provided to the seller associated with the particular defined product.

Abstract: A system and method are disclosed for identifying and blocking unacceptable web content, including pornographic web content. In a preferred embodiment, the system comprises a proxy server connected between a client and the Internet that checks a requested URL against a block list that may include URLs identified by a web spider. If the URL is not on the block list, the proxy server requests the web content. When the web content is received, the proxy server processes its text content and compares the processing results using a thresholder. If necessary, the proxy server then processes the image content of the retrieved web content to determine if it comprises skin tones and textures. Based on these processing results, the proxy server may either block the retrieved web content or permit user access to it. Also disclosed is a system and method for inserting advertisements into retrieved web content.