Abstract: The present disclosure provides an object tracking method and an object tracking device. The method includes: acquiring a human-face region of an image frame so as to determine a human-body region; extracting a human-body feature from the human-body region, and determining whether a plurality of historical object trajectories match the human-body feature; in response to that one of the plurality of historical object trajectories matches the human-body feature, updating an age of the human-body feature to a preset value; and in response to that none of the plurality of historical object trajectories matches the human-body feature, adding an object trajectory corresponding to the human-body feature to the plurality of historical object trajectories. Thus, a better tracking effect may be achieved.

Abstract: The present invention provides triterpenoids produced from natural compounds such as oleanolic acid, ursolic acid, betulinic acid, and hederagenin.

Abstract: 2-Cyano-3,12-dioxooleana-1,9(11)-dien-28-oic acid amino acid derivatives having antiinflammatory properties are provided. Pharmaceutical compositions and methods for preventing or treating inflammation or a disease or condition mediated by inflammation are described.

Abstract: Synthetic triterpenoids and methods of using the same to induce gene expression and differentiation of stem or progenitor cells are provided. Furthermore, the present invention provides methods for producing a cell, such as a stem or progenitor cell, with induced gene expression by contacting a stem or progenitor cell with an effective amount of a synthetic triterpenoid to induce the expression of one or more of SOX9 (Sex determining region Y-box 9), COL2A1 (Type II Collagen (alpha1)), TGF-?I, TGF-p2, TGF-33, BMP2, BMP4, BMPRII (Bone Morphogenic Protein Receptor II), SMAD (Small Mothers Against Decapentaplegic) 3, SMAD4, SMAD6, SMAD7, TIMP (Tissue Inhibitor of Metalloproteinase)-1 or TIMP-2 in the stem or progenitor cell, wherein the stem or progenitor cell is not a mesenchymal stem cell, periosteium cell or osteoprogenitor cell. In one embodiment, the stem or progenitor cell is multipotent.

Abstract: 2-Cyano-3,12-dioxooleana-1,9(11)-dien-28-oic acid amino acid derivatives having antiinflammatory properties are provided. Pharmaceutical compositions and methods for preventing or treating inflammation or a disease or condition mediated by inflammation are described.

Abstract: Synthetic triterpenoids and methods of using the same to induce gene expression and differentiation of stem or progenitor cells are provided. Furthermore, the present invention provides methods for producing a cell, such as a stem or progenitor cell, with induced gene expression by contacting a stem or progenitor cell with an effective amount of a synthetic triterpenoid to induce the expression of one or more of SOX9 (Sex determining region Y-box 9), COL2A1 (Type II Collagen (alpha1)), TGF-?I, TGF-p2, TGF-33, BMP2, BMP4, BMPRII (Bone Morphogenic Protein Receptor II), SMAD (Small Mothers Against Decapentaplegic) 3, SMAD4, SMAD6, SMAD7, TIMP (Tissue Inhibitor of Metalloproteinase)-1 or TIMP-2 in the stem or progenitor cell, wherein the stem or progenitor cell is not a mesenchymal stem cell, periosteium cell or osteoprogenitor cell. In one embodiment, the stem or progenitor cell is multipotent.

Abstract: The present invention is a method for preparing triterpenoids such as 2-cyano-3,12-dioxoolean-1,9-dien-28-methyl ester and derivatives thereof from oleanic acid, ursolic acid, betulinic acid, sumaresinolic acid or hederagenin.

Abstract: The present invention provides triterpenoids produced from natural compounds such as oleanolic acid, ursolic acid, betulinic acid, and hederagenin.

Abstract: The present invention provides triterpenoids produced from natural compounds such as oleanolic acid, ursolic acid, betulinic acid, and hederagenin.

Abstract: The present invention provides triterpenoids produced from natural compounds such as oleanolic acid, ursolic acid, betulinic acid, and hederagenin.

Abstract: The present invention is a method for preparing triterpenoids such as 2-cyano-3,12-dioxoolean-1,9-dien-28-methyl ester and derivatives thereof from oleanic acid, ursolic acid, betulinic acid, sumaresinolic acid or hederagenin.