Abstract: The present invention discloses a polypeptide and application thereof. By modifying oxyntomodulin (OXM), hybridizing OXM with a peptide sequence of Exenatide, including enabling the polypeptide to be resistant to DPP-4 enzyme degradation through amino acid modification, and conjugating fatty acid chains at the same time, an OXM hybrid peptide having longer pharmacologic action time and better weight losing effects is obtained. Synthesis of a target polypeptide is fast realized by an orthogonal protection strategy solid-phase synthesis method, and a crude product is purified and freeze-dried to obtain the OXM hybrid peptide.

Abstract: The present disclosure discloses a method for quantifying a bearing capacity of foundation containing shallow-hidden spherical cavities, comprising: in Step 1, constructing a spatial axisymmetric calculation model for stability analysis of the foundation containing shallow-hidden spherical cavities; in Step 2, solving the model to obtain a general solution which reflects the spatial stress distribution of surrounding rock containing shallow-hidden spherical cavities; in Step 3, obtain a mathematical expression by derivation for calculating the bearing capacity of the foundation containing shallow-hidden spherical cavities; and in Step 4: completing the determination of the foundation bearing capacity. Benefits: This method has many advantages such as comprehensive consideration, high accuracy and reliability of calculation results, and may provide the scientific basis for the development of prevention and control against the instability of the foundation containing shallow-hidden cavities.

Abstract: A fracturing device, including a power unit, wherein the power unit comprises a muffling compartment, a turbine engine, an air intake unit, and a starter; the air intake unit is communicated with the turbine engine through an intake pipe, and configured to provide a combustion-supporting gas to the turbine engine; the air intake unit is located at the top of the muffling compartment, the muffling compartment comprises an accommodation space, the turbine engine and the starter are located in the accommodation space, and the starter is configured to start the turbine engine, the starter comprises a first electric motor.

Abstract: Methods for detecting and extracting plastic contaminants within a water sample, which involve introducing the water sample to a hydrophobic deep eutectic solvent, are provided.

Abstract: Described are an encoding method and system for ROAs. The encoding method includes the following steps: given a set of authorized IP prefixes an AS which are maintained with an IP address trie. By specifying a sequence of hanging levels on the IP address trie, it is divided into a set of non-overlapping sub-trees, each rooted at a hanging level. A node on a hanging level uniquely defines a sub-tree rooted at it, whose prefix can be encoded as the identifier of this sub-tree. All authorized prefixes covered by a sub-tree can be encoded into a bitmap of 2h bits, where h is the height of this sub-tree. Thus, the set of authorized IP prefixes of an AS is encoded into several tuples (identifier, bitmap).

Abstract: The present disclosure provides a method and device for intelligent control of heating furnace combustion based on a big data cloud platform, which relates to the technical field of artificial intelligence control. The method includes: construction of big data cloud platform based on production and operation parameters of the heating furnace; identification of key factors in the production process of the heating furnace by using big data mining technology; independent deployment of traditional heating furnace combustion control systems based on the mechanism model; and integration of cloud platform big data expert knowledge base and the heating furnace combustion intelligent control system.

Abstract: A method for checking a medium-term and long-term maintenance plan of a power grid. A predicted load value and one or more historical load values of a power grid are acquired and clustered through a clustering algorithm, and a historical moment at which a historical load value is in a same cluster as the predicted load value and has a largest load value is selected as a target historical moment. A power grid operation mode model at the target historical moment is acquired, and the power grid operation mode model is updated according to the maintenance plan and open loop point information by using a full wiring approach to obtain a future-state power grid operation mode model. Ground state power flow data of the power grid are calculated based on the operation mode model, and safety check is carried out according to a preset ground state power flow limit.

Abstract: A method for predicting burning through point (BTP) based on an encoder-decoder network is provided, which belongs to a field of soft-sensing modeling in an industrial process. A BTP prediction model based on the encoder-decoder network with a temporal attention mechanism and a spatial attention mechanism is developed according to data acquired during an operation of a sintering machine, where the temporal attention mechanism is used to characterize temporal dynamics of samples, and the spatial attention mechanism is used to capture a correlation between an object variable and an advanced feature, to improve accuracy and robustness of the model. With the model, BTP in a sintering process can be predicted in real time, which has great practical significance for on-site process guidance and parameter adjustment.

Abstract: Provided are an MIC switching apparatus and an MIC switching method for a vehicle, which can achieve automatic switching between a headset MIC and an on-board device MIC. The MIC switching apparatus includes: a wireless headset MIC (14), a connector (12), an on-board device MIC (24), a data selector (13), and a controller (11). The connector (11) is configured to, when receiving a connection signal, control the data selector (13) to receive a sound signal from the on-board device MIC (24), and when not receiving the connection signal, control the data selector (13) to receive a sound signal from the wireless headset MIC (14). With the above features, automatic switching from sound acquisition by the on-board device MIC to sound acquisition by the wireless headset MIC may be achieved, thereby improving user experiences and increasing market competitiveness of the vehicle applying the method.

Abstract: An extended connection method and an extended connection system both for Bluetooth devices are provided. The extended connection method includes: initializing a first Bluetooth device, and setting the first Bluetooth device to a master mode; establishing a first Bluetooth connection between the first Bluetooth device and a second Bluetooth device; and monitoring whether there is an external Bluetooth device connected to the second Bluetooth device or not, herein under a condition that a second Bluetooth connection is established between the external Bluetooth device and the second Bluetooth device, data transmission is carried out between the first Bluetooth device and the external Bluetooth device through the first Bluetooth connection and the second Bluetooth connection.

Abstract: A mode-switchable Bluetooth device includes a processing unit with a mobile device operating system mounted therein, and a Bluetooth component that is configured to switch a connection mode under control of the processing unit. The mode-switchable Bluetooth device is configured to establish a connection with an external Bluetooth device by switching the connection mode when failing to establish a connection with a target Bluetooth device. With the mode-switchable Bluetooth device of the present application, running reliability of a multi-Bluetooth-device connection system can be significantly improved, and the multi-Bluetooth-device connection system can be smoothly switched into a point-to-point Bluetooth connection system under abnormal conditions.