Abstract: Embodiments of the present disclosure provide an information processing method and apparatus, and a device, the method includes: sending an information request to a platform side at a preset time interval if it is determined that a merchant platform application has been logged in; receiving a system message sent by the platform side in response to the information request in real time, where the system message is sent by a service side to the platform side in real time; and displaying the system message and/or prompt information of the system message on the merchant platform application. This embodiment does not require the merchant to obtain a new system message by refreshing a page, avoiding a repeated refresh operation by the merchant and avoiding the merchant missing an important notification due to not being able to obtain the system message in time.

Abstract: Copper-tin-nickel brazing material prepared by alloys recycled from E-waste, preparation method therefor, and system thereof are provided. A preparation method for the copper-tin-nickel brazing material includes the following steps: (a) spreading nano-SiO2 on the bottom of crucible and then adding a crude copper-tin-iron-nickel alloy recycled from E-waste; (b) heating the crucible to melt the crude alloy into a metal liquid so that Zn and Pb in the metal liquid react with the SiO2 to form a slag that floats out; (c) introducing a refining gas to the bottom of metal liquid in step (b), thereby removing the scums or gases formed by Pb, Fe, S, and O in the metal liquid; (d) performing heat-preserving directional solidification on the metal liquid, to bias-aggregate the Fe and Sb at one end and remove the same to obtain a copper-based intermediate alloy; and smelting and powdering the copper-based intermediate alloy.

Abstract: This invention discloses a method and system that provides a user multiple options to unlock a touch screen of a mobile electronic device (e.g., a smartphone, tablet computer) by interacting with one or more unlock images displayed on the touch screen. When the user chooses one of the multiple options to unlock the touch screen, the invention unlocks the screen and causes an application corresponding to the option to perform an action. The application is selected from a plurality of applications installed on the mobile electronic device based on its location.

Abstract: Provided is a 10-methoxycamptothecine derivate of formula (1), wherein R is selected from hydrogen, C1-6 alkyl, C1-6 haloalkyl, aryl substituted C1-6 alkyl, phosphate substituted C1-6 alkyl, amino-substituted C1-6 alkyl, carboxyl substituted C1-6 alkyl, hydroxyl substituted C1-6 alkyl, and amide-substituted C1-6 alkyl; R1 is selected from hydrogen and t-butoxycarbonyl substituted amino. Also provided in the present invention are the preparation method of the derivate and the use thereof in anti-tumor drug preparation.

Abstract: Provided is a 10-methoxycamptothecine derivate of formula (1), wherein R is selected from hydrogen, C1-6 alkyl, C1-6 haloalkyl, aryl substituted C1-6 alkyl, phosphate substituted C1-6 alkyl, amino-substituted C1-6 alkyl, carboxyl substituted C1-6 alkyl, hydroxyl substituted C1-6 alkyl, and amide- substituted C1-6 alkyl; R1 is selected from hydrogen and t-butoxycarbonyl substituted amino. Also provided in the present invention are the preparation method of the derivate and the use thereof in anti-tumor drug preparation.