Alibaba Group Holding Limited

Other

Zhejiang University

Dian Xu

Xiang Gao

Zhongyang Luo

Kefa Cen

Mingjiang Ni

Weihong Wu

Yi Chen Zhong

Mengxiang Fang

Qinhui Wang

Chunjiang Yu

Chenghang Zheng

Jinsong Zhou

Shurong Wang

Leming Cheng

Zhenglun Shi

Yongxin Zhang

Hongmin Yu

Kunzan Qiu

Hao Song

Zuliang Wu

Xinbo Zhu

Methods and devices for recognizing a request to change a mobile phone number are disclosed. The exemplary method comprises: when a request to change a mobile phone number sent by a first user is received, obtaining corresponding historical transaction record information from a storage unit according to user identification information carried in the request, matching current environment information carried in the request with historical environment information carried in the historical transaction record information; if the current environment information does not match the historical environment information, performing identity verification on the first user; and if the identity verification passes, executing a service operation to change the mobile phone number.

Method and apparatus for recognizing service request to change mobile phone number

The present disclosure provides a method, device and server for managing user login sessions. A session cache list is queried, using a user ID and after a user has successfully logged in with the user ID via the login medium, whether a login session queue corresponding to the user ID exists in the session cache list. If the login session queue exists in the session cache list, a user login status is managed through the login session queue. If the login session queue corresponding to the user ID is absent from the session cache list, a session ID corresponding to the user's login is stored in a login session queue corresponding to the user ID in the session cache list. A legitimate user is able to effectively manage each login created with the user's user ID through the login session queue, and to prevent any login sessions created when the user ID is used to log in from being beyond the legitimate user's control.

Method, device and server for managing user login sessions

Methods and devices for recognizing a request to change a mobile phone number are disclosed. The exemplary method comprises: when a request to change a mobile phone number sent by a user is received, obtaining corresponding historical transaction record information from a storage unit according to user identification information carried in the request, matching current environment information carried in the request with historical environment information carried in the historical transaction record information; if the current environment information matches the historical environment information, recognizing the request as a trusted request, and executing a service operation to change the mobile phone number.

Disclosed are a catalyst for synergistic control of oxynitride and mercury and a method for preparing the same. The catalyst includes the following components by mass percentage: a carrier: TiO2 72%-98.6%, active components: V2O5 0.1%-5%, WO3 1%-10%, Cr2O3 0.1%-5% and Nb2O5 0.1%-5%, and a co-catalyst of 0.1%-3%. The present invention can be used for reducing the oxynitrides in a flue gas, meanwhile oxidizing zero-valent mercury into bivalent mercury and then controlling the reactions, has relatively high denitration performance and also has high mercury oxidation performance; compared with current commercial SCR catalysts, the mercury oxidation rate of the catalyst is improved to a great extent, which can adapt to the requirements for mercury removal in China's coal-fired power plants, the conversion rate of SO2/SO3 is relatively low, and the catalyst has a better anti-poisoning ability, and is a new catalyst with a low cost and high performance.

Catalyst for synergistic control of oxynitride and mercury and method for preparing the same

A free radical injection ionizer for flue gas treatment with corona discharge includes an injection device for releasing free radical source substances and an electrode device for producing corona, wherein the injection device and the electrode device are arranged separately, wherein the electrode device includes a conductive pole, and discharge tips arranged on the upper and lower sides of the conductive pole at equal intervals, and the injection device includes nozzles symmetrically arranged on two sides of the electrode device, and two lines of holes axially arranged on the walls of the nozzles nearby the electrode device, the axial lines of the holes directing the discharge tips nearest the holes.

Free radical injection ionizer for flue gas treatment with corona discharge

Growing community of inventors

Hangzhou, China

Dian Xu