Abstract: A fenestrated duodenal stent includes a stent body enclosed by a meshed sidewall. The stent body is open at two ends and hollow inside. The stent body includes a proximal support segment, a distal support segment, and an opening segment connected between the proximal and distal support segments. The proximal support segment is divided into a front section, a middle section and a rear section that are connected sequentially and coaxially. The front section is of an umbrella shape, and an opening of the umbrella shape faces the middle section. The middle section is of a cylindrical shape, and a diameter of the cylindrical shape is less than a diameter of the opening segment. The rear section is spherical or hemispherical, and a maximum diameter of the rear section is greater than the diameter of the opening segment but not greater than a maximum diameter of the umbrella shape.

Abstract: A monitoring system includes a reference station, a mobile station, a plurality of integrated sensing units, and a server. The reference station is configured to provide fixed reference coordinates to the server. The mobile station transmits multi-frequency electromagnetic wave signals to the integrated sensing units. Based on water depth and position information detected by sensors of the integrated sensing units in combination with information of electromagnetic wave signals as well as a propagation distance and time, displacement information of the integrated sensing units can be obtained. The data is transmitted to the mobile station, which further transmits the data to the server, to accomplish monitoring for the reservoir landslide water-level-fluctuation zone. Automated monitoring is achieved and the monitoring cycle covers the entire deformation and evolution phases of landslides.

Abstract: Provided is a preparation and purification process of MMAE. The process has mild synthesis and purification conditions, can effectively prevent the change of product chirality caused by excessively high temperature, greatly reduces generation of degradation impurities, and increases the purity and yield of the product. In addition, the preparation and purification process has good stability and is more suitable for scale-up production. The MMAE prepared has purity of higher than 99%, and can perfectly meet clinical drug requirements.

Abstract: An embodiment may include repeatedly receiving, from one or more online advertising service devices at which a plurality of advertising campaigns are operated, updates to advertising spending amounts on keywords associated with one or more particular advertising campaigns. The embodiment may also involve repeatedly receiving, from the one or more online advertising service devices, updates to respective quality scores associated with the keywords. The embodiment may further involve providing, for display on a graphical user interface, respective line items for the plurality of advertising campaigns. A line item for the one or more particular advertising campaigns may include one or more of: (i) a first representation of a total advertising spending amount for keywords associated with the one or more particular advertising campaigns, (ii) a second representation of a total number of the keywords, or (iii) a third representation of an average quality score for the keywords.