Abstract: A device and a method are disclosed for collecting and culturing fish embryos and evaluating combined toxicity of thiamethoxam and tetraconazole. An embryo collection component and an embryo culture component are provided on a base plate. The embryo collection component includes a collection tray detachably connected to a bottom of a culture tube. The embryo culture component includes a cavity plate with a stopper inside and a top plate provided with a culture well. A bottom of the culture well is provided with a leakage hole; and after the top plate is installed into the cavity plate, the stopper occludes the leakage hole. The new device is used to carry out the combined toxicity effect test of thiamethoxam and tetraconazole on zebrafish embryos, which can be used to avoid development of pesticide mixtures that have a good preventive effect but pose increased toxicity risk to the ecological environment.

Abstract: A method of wireless communication includes grouping, by a network device, rate matching resources into a plurality of first groups for communication with a wireless terminal and transmitting a channel control indicator identifying at least a first group from the plurality of first groups of rate matching resources. In various embodiments, the rate matching resources include one or more of a rate matching pattern comprising multiple time-frequency transmission resources, a periodic zero power channel state information reference signal (ZP CSI-RS) resource set, an aperiodic ZP CSI-RS resource set, a semi-persistent ZP CSI-RS resource set, a long-term evolution cell specific reference signal (LTE CRS) resource, or a rate matching pattern group.

Abstract: A user selection method includes: acquiring user feature information; determining user association information according to the user feature information; and selecting users according to the user association information and a preset condition.

Abstract: System testing is described. An example system testing method includes: acquiring module relationship information for a system under test, the system under test including a plurality of modules, the module relationship information indicating a logical relationship between each two of the plurality of modules; and testing at least two modules in the system under test based on the module relationship information, the at least two modules being associated with each other for the same function implemented by the system under test. By use of the technical solution of the present disclosure, both system and module perspectives can be applied to system integration testing, so as to achieve a more comprehensive system testing coverage and find problems in the system under test as soon as possible, which can help to improve the system testing coverage and system testing efficiency.

Abstract: In one configuration, multiple TRPs, or base stations such a next generation node B (gNB) base stations send different transport blocks (TBs) to a user equipment (UE) at the same time or at different times. In another configuration, multiple base stations may send the same data at the same time to a UE. When the same data is being sent by multiple base stations to a UE, the UE must be notified by some mechanism. Disclosed herein are multiple mechanism for notifying the UE that multiple base stations will be transmitting toe same data at the same time. When there is a backhaul between a TRP and another, each TRP can choose to send the same data stream to increase the reliability of the transmission when, for example, the UE receives at a low signal-to-noise ratio (SNR).

Abstract: A method for determining a quasi-co-location (QCL) relationship, applied to a first node, including: acquiring indication information; determining the QCL relationship between a first reference signal and a second reference signal according to the indication information; where the indication information includes QCL association information, first time window information and second time window information; the QCL association information includes the first reference signal having the QCL relationship with the second reference signal, and a QCL type.

Abstract: The present disclosure provides a modified resin composition, a preparation method and use thereof. The raw materials of the modified resin composition includes: 65 to 100 parts by mass of a matrix resin, 10 to 40 parts by mass of a phenoxy resin, 0.5 to 25 parts by mass of nano silicon dioxide, 2 to 15 parts by mass of a curing agent, 0 to 2 parts by mass of a curing accelerator, and 0 to 1 part by mass of a coupling agent. The modified resin composition has excellent toughness, excellent processability during mechanical punching process, a relatively low powder loss rate, and excellent bonding performance and heat resistance.

Abstract: The present invention relates to an unsaturated polyester resin, and a preparation method therefor and use thereof. The unsaturated polyester resin is prepared of the following raw materials in parts by mass: 50-90 parts of a prepolymer, 10-30 parts of phenylethylene, 5-15 parts of methyl methacrylate, and 5-15 parts of 1,3,5-triglycidyl isocyanurate. The prepolymer is formed by combining polyol, a benzene-containing polybasic acid, and an unsaturated polybasic acid with a molar ratio of (2.2-4.5):(1-1.5):(1-1.5); and in the prepolymer, the molar ratio of hydroxyl to carboxyl is (1.0-1.5):1. The unsaturated polyester resin has good yellowing resistance and also has good heat resistance, and a thermal deformation temperature is generally higher than 130° C.

Abstract: The present disclosure provides a modified allyl compound, and a modified bismaleimide prepolymer. The modified allyl compound is represented by formula (1), has a cyclopentadiene structure represented by formula (2), and contains a benzene ring or a benzene ring substituted with a linear alkane of lower polarity.

Abstract: Disclosed are Lactobacillus rhamnosus strain 753 and uses thereof, a silage additive and silage. Lactobacillus rhamnosus strain 753 is deposited in China General Microbiological Culture Collection Center with an accession number of CGMCC 18233. Lactobacillus rhamnosus strain 753 can improve the quality of silage in a high-temperature and high-humidity region, and the silage processed by Lactobacillus rhamnosus strain 753 has good stability and low pH, low aflatoxin B1 content and less dry matter loss. In addition, secondary fermentation can be avoided in the silage processed by Lactobacillus rhamnosus strain 753 when a silo or bale for silage is opened.

Abstract: The present invention discloses a biomimetic bag opening device for an automatic filling line, comprising brackets left and right symmetrically arranged on the filling line for filling bags, the symmetrically arranged brackets moving in a horizontal relative motion respectively driven by a pull rod, a push bag plate facing the filling bag provided at a front end of the bracket, a row of gripper holes provided on the push bag plate in the upper and lower of the horizontal level respectively, two rows of grippers provided on the brackets behind the push bag plate and corresponding to the two rows of gripper holes, a gripper drive device driving two rows of grippers open or closed, and grasping fingertips of the grippers projecting or retracting from two rows of the upper and lower of the gripper holes.

Abstract: The present invention discloses a biomimetic bag opening device for an automatic filling line, comprising brackets left and right symmetrically arranged on the filling line for filling bags, the symmetrically arranged brackets moving in a horizontal relative motion respectively driven by a pull rod, a push bag plate facing the filling bag provided at a front end of the bracket, a row of gripper holes provided on the push bag plate in the upper and lower of the horizontal level respectively, two rows of grippers provided on the brackets behind the push bag plate and corresponding to the two rows of gripper holes, a gripper drive device driving two rows of grippers open or closed, and grasping fingertips of the grippers projecting or retracting from two rows of the upper and lower of the gripper holes.