Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for using service accounts for authentication and access control in a distributed computing platform. A distributed computing platform having a plurality of computers configured to execute instructions implementing a plurality of software subsystems includes an identity management subsystem, one or more platform tools, and an application, wherein the identity management subsystem is configured to maintain user accounts for human users to access the one or more platform tools, and wherein the identity management subsystem is configured to maintain service accounts for non-human entities in the platform including assigning a service account to the application.

Abstract: An automatic water-adding vaporization including a pot body main body, a heat-generating component installed on the pot body main body, a water pump connected to the pot body main body, a control circuit for controlling the water pump, a temperature acquisition board and a water-depletion-and temperature-sensing element installed on the temperature acquisition board. One end of the temperature acquisition board is either connected to the heat-generating component or to a position of the pot body main body in proximity to the heat-generating component. The remaining parts of the temperature acquisition board are away from the pot body main body. The water-depletion- and temperature-sensing element is installed at a position on the temperature acquisition board away from the pot body main body. The water-depletion- and temperature-sensing element is connected to the control circuit.

Abstract: An automatic water-adding vaporization including a pot body main body, a heat-generating component installed on the pot body main body, a water pump connected to the pot body main body, a control circuit for controlling the water pump, a temperature acquisition board and a water-depletion- and temperature-sensing element installed on the temperature acquisition board. One end of the temperature acquisition board is either connected to the heat-generating component or to a position of the pot body main body in proximity to the heat-generating component. The remaining parts of the temperature acquisition board are away from the pot body main body. The water-depletion- and temperature-sensing element is installed at a position on the temperature acquisition board away from the pot body main body. The water-depletion- and temperature-sensing element is connected to the control circuit.

Abstract: Novel ent-kaurene diterpene compound and its derivatives, their preparation methods and their use. ent-Kaurene diterpene in the present invention could be used as desired intermediates for preparing asymmetric organic compounds and medicaments, and could be used as antitumor agent, anti-inflammatory agent and immune agent etc. The said ent-kaurene diterpene compound could be condensed with hydroxyl compounds to obtain various acetal derivatives, could be reacted with amine compounds to obtain various amino derivatives, and could be reacted with acyl halide or acid anhydride to obtain various acyl derivatives.

Abstract: Novel ent-kaurene diterpene compound and its derivatives, their preparation methods and their use. ent-Kaurene diterpene in the present invention could be used as desired intermediates for preparing asymmetric organic compounds and medicaments, and could be used as antitumor agent, anti-inflammatory agent and immune agent etc. The said ent-kaurene diterpene compound could be condensed with hydroxyl compounds to obtain various acetal derivatives, could be reacted with amine compounds to obtain various amino derivatives, and could be reacted with acyl halide or acid anhydride to obtain various acyl derivatives.