Abstract: A method for synthesis of 1-decene oligomer is provided, wherein 1-decene is polymerized at 80-120° C., 0.8-1.4 MPa in the presence of aluminum trichloride catalyst supported on gamma-alumina and n-hexane solvent where the volume ratio of 1-decene to n-hexane is 3:8-4:1. The catalyst is treated as follows: impregnating gamma-alumina carrier in 0.5-2.0 M of hydrochloric acid, sulfuric acid, nitric acid or mixtures thereof, then vacuum drying at 80-100° C. and calcining at 400-800° C.; dissolving 5-10 g of anhydrous aluminum trichloride in 100 ml of tetrachloromethane, trichloromethane or dichloromethane solvent; adding the obtained solution into 10-20 g of activated alumina carrier and obtaining the catalyst after vacuum drying. The conversion of 1-decene is 50 wt % or more. The oligomer has a kinematic viscosity at 40° C. of 6.0-25 mm2/s and a viscosity index of 160-262.

Abstract: Embodiments of the present application relate to a system for implementing screen capture, a method for implementing screen capture, and a computer program product for implementing screen capture. A method for implementing screen capture is provided.

Abstract: Embodiments of the present application relate to a method sharing data, a device for sharing data, and a computer program product for sharing data. A method for sharing data is provided. The method includes detecting a shaking operation performed on a device by a user, in response to the detecting of the shaking operation, performing screenshot processing of current data of an application to obtain screenshot data, and sending a sharing request regarding the screenshot data to a server to share the screenshot data.

Abstract: A state retention power gated cell includes a logic cell arranged in two or more rows. The logic cell has an active layer including at least a first well and a second well disposed in first and second rows, respectively. In a normal operation mode, the first well is powered with a first bias voltage, the second well is powered with a second bias voltage, the first power supply line is powered with VDDC, and the second power supply line is powered with VDD. In a standby mode, the first well preferably is powered down, the second well is powered with the second bias voltage, the first power supply line is powered with VDDC, and the second power supply line is powered down.

Abstract: A state retention power gated cell includes a logic cell arranged in two or more rows. The logic cell has an active layer including at least a first well and a second well disposed in first and second rows, respectively. In a normal operation mode, the first well is powered with a first bias voltage, the second well is powered with a second bias voltage, the first power supply line is powered with VDDC, and the second power supply line is powered with VDD. In a standby mode, the first well preferably is powered down, the second well is powered with the second bias voltage, the first power supply line is powered with VDDC, and the second power supply line is powered down.

Abstract: The present disclosure provides a microscopic vision measurement method based on the adaptive positioning of the camera coordinate frame which includes: calibrating parameters of a microscopic stereo vision measurement model (201); acquiring pairs of synchronical images and transmitting the acquired images to a computer through an image acquisition card (202); calculating 3D coordinates of feature points in a scene according to the matched pairs of feature points in the scene obtained from the synchronical images and the calibrated parameters of the microscopic stereo vision measurement model (203); and performing specific measurement according to the 3D coordinates of the feature points in the scene (204). With the method, the nonlinearity of the objective function in the microscopic vision calibration optimization is effectively decreased and a better calibration result is obtained.

Abstract: This invention relates to a method for preparing a star-shaped polycarboxylate superplasticizer by the first esterification step with polyol and (meth)acrylic acid as main reactants and the second polymerization step. In the first step, the star-shaped polymerizable active ends were synthesized by esterification between polyol and (meth)acrylic acid in the presence of catalyst. In the second step, the final star-shaped polycarboxylate superplasticizer was prepared by radical polymerization among the product obtained in first step, unsaturated polyoxyethylene ethers, molecular weight regulator and unsaturated carboxylic acid in the presence of initiator. The production process of this invention exhibits some characteristics including simple, easily controllable, high polymerization degree, low cost and pollution free. The star-shaped molecular structure of polycarboxylate superplasticizer can be achieved through synthesizing active “core” by esterification and “arm” by radical polymerization.

Abstract: The present invention provides a human insulin analogue, an acylated derivative thereof and a physiologically acceptable salt. The present invention further provides a preparation method for the insulin analogue and an application of the insulin analogue as a therapeutic agent, and particularly as a diabetes mellitus therapeutic agent.

Abstract: An oscillator circuit includes a charge current source and first and second muxes. The first mux has a common node, a discharge node, a control node and a charge node coupled to the charge current source. The control node couples the common node to either the discharge or charge nodes. The second mux has a shared node, a reference node, a control node and a ground node coupled to ground. The second mux control node couples the shared node to either the reference or ground nodes. A capacitor is coupled between the common node and the shared node. A comparator has a non-inverting input coupled to the common node, an inverting input coupled to the reference node, and an output coupled to the first and second control nodes. A discharge current sink couples the discharge node to ground and an oscillator output is provided by the comparator.

Abstract: The present invention discloses a modified exendin or pharmaceutically acceptable salts thereof, wherein the modified exendin comprises an amino acid sequence having at least 90% sequence identity to SEQ ID No. 17 and the amino acid sequence has a higher stability than the non-modified exendin of SEQ ID No. 4. These compounds are useful in treating type 2 diabetes as GLP-1 receptor agonists.

Abstract: This invention relates to a method for preparing a star-shaped polycarboxylate superplasticizer by the first esterification step with polyol and (meth)acrylic acid as main reactants and the second polymerization step. In the first step, the star-shaped polymerizable active ends were synthesized by esterification between polyol and (meth)acrylic acid in the presence of catalyst. In the second step, the final star-shaped polycarboxylate superplasticizer was prepared by radical polymerization among the product obtained in first step, unsaturated polyoxyethylene ethers, molecular weight regulator and unsaturated carboxylic acid in the presence of initiator. The production process of this invention exhibits some characteristics including simple, easily controllable, high polymerization degree, low cost and pollution free. The star-shaped molecular structure of polycarboxylate superplasticizer can be achieved through synthesizing active “core” by esterification and “arm” by radical polymerization.

Abstract: What is provided is EPO mimetic peptide derivatives defined as formula (I) and their pharmaceutical salts, the preparation thereof, wherein R1, R2, R3, R4, R5, n1, n2 are defined as described in description. A composition comprising of an EPO mimetic peptide derivative defined as formula (I) and its pharmaceutical salt. The uses of the derivatives and their pharmaceutical salts, as well as the uses of the compositions described above in treatment of diseases characterized by a deficiency of EPO or a low or defective red blood cell population.

Abstract: This invention discloses GLP-1 analogues and their pharmaceutical salts, wherein the GLP-1 analogue comprises an amino acid sequence of general formula (I), wherein Lys represents a modified lysine with a lipophilic acid. The GLP-1 analogues provided by this invention have the function of human GLP-1, and a longer half-life in vivo compared with the human GLP-1. Uses of such compounds and compositions include treating non-insulin-dependent diabetes, insulin-dependent diabetes, and obesity.

Abstract: An oscillator circuit includes a charge current source and first and second muxes. The first mux has a common node, a discharge node, a control node and a charge node coupled to the charge current source. The control node couples the common node to either the discharge or charge nodes. The second mux has a shared node, a reference node, a control node and a ground node coupled to ground. The second mux control node couples the shared node to either the reference or ground nodes. A capacitor is coupled between the common node and the shared node. A comparator has a non-inverting input coupled to the common node, an inverting input coupled to the reference node, and an output coupled to the first and second control nodes. A discharge current sink couples the discharge node to ground and an oscillator output is provided by the comparator.

Abstract: A compensation method for radio frequency module performance, it is adding a module monitoring circuit and a radio frequency power detection circuit to an existing radio frequency module, meanwhile replacing an existing hardware compensation circuit with a radio frequency digital controlled attenuator. The method replaces hardware method by a method of combining software of the module monitoring circuit and hardware such as module monitoring circuit, radio frequency digital controlled attenuator and radio frequency power detection circuit, as well as intelligently compensates the radio frequency module by using data obtained by predefined table or formula/algorithm, so as to adjust each characteristic index of the device accurately and easily, thus to improve performance of the radio frequency module and further meet the requirement of working stability of the radio frequency module. The present invention further provides a radio frequency module improved by such method.

Abstract: Disclosed is a method for preparing 1-octene in the presence of a catalyst system for ethylene oligomerization, which includes: premixing a part of ethylene gas as raw material with a solvent, mixing with the components a+b, c and d of the catalyst system, and then sending in a reactor; directly sending the rest of ethylene gas in the reactor; discharging the resultant liquid from the upper part of the reactor into an overflow channel; adding a catalysis stopping agent to the overflow channel; and then separating the resultant liquid. The advantages of the method are high selectivity of 1-octene and high catalytic activity.

Abstract: The present disclosure provides a microscopic vision measurement method based on the adaptive positioning of the camera coordinate frame which includes: calibrating parameters of a microscopic stereo vision measurement model (201); acquiring pairs of synchronical images and transmitting the acquired images to a computer through an image acquisition card (202); calculating 3D coordinates of feature points in a scene according to the matched pairs of feature points in the scene obtained from the synchronical images and the calibrated parameters of the microscopic stereo vision measurement model (203); and performing specific measurement according to the 3D coordinates of the feature points in the scene (204). With the method, the nonlinearity of the objective function in the microscopic vision calibration optimization is effectively decreased and a better calibration result is obtained.

Abstract: The present invention relates to the communication field and provides method and system for detecting repeater self-excitation and the repeater using the method and system. The method includes detecting an output power of an up link; judging whether the detected output power of the up link exceeds a threshold of self-excitation and, if so, adding a numerically-controlled attenuation to the up link accordingly; and judging whether the change in the output power of the up link is equal to that in the numerically-controlled attenuation and, judging whether the repeater is subject to a self-excitation according to the result of judgment regarding the change in the output power of the up link. The repeater self-excitation detecting method has the following advantages: 1. The self-excitation can be detected in time, thus avoiding had effect on the communication system; 2. The devices of repeater can be protected from being burned down; and 3. The cost incurred by the patrol inspection personnel can be reduced.

Abstract: A catalyst for synthesizing 1-hexene from ethylene trimerization and its application are provided. Said catalyst consists of (a) the compound containing P and N, (b) electron donor, (c) Cr compound, (d) carrier and (e) accelerator. The molar ratio of (a), (b), (c), (d) and (e) is 0.5-100:0.5-100:1:0.5-10:50-5000. The catalyst is prepared by mixing the components of (a)-(e) in an ethylene trimerization apparatus in situ and ethylene is introduced into the apparatus continuously. The prepared catalyst can be used to synthesize 1-hexene from ethylene trimerization in the inert solvents. The trimerization is performed at 30-150° C. and 0.5-10.0 MPa for 0.1-4 hours. The catalyst has high catalytic activity and high 1-hexene selectivity. During the process of ethylene trimerization, by-product polyethylene does not stick to the apparatus.

Abstract: A method for synthesis of 1-decene oligomer is provided, wherein 1-decene is polymerized at 80-120° C., 0.8-1.4 MPa in the presence of aluminum trichloride catalyst supported on gamma-alumina and n-hexane solvent where the volume ratio of 1-decene to n-hexane is 3:8-4:1. The catalyst is treated as follows: impregnating gamma-alumina carrier in 0.5-2.0 mol of hydrochloric acid, sulfuric acid, nitric acid or mixtures thereof, then vacuum drying at 80-100° C. and calcining at 400-800° C.; dissolving 5-10 g of anhydrous aluminum trichloride in 100 ml of tetrachloromethane, trichloromethane or dichloromethane solvent; adding the obtained solution into 10-20 g of activated alumina carrier and obtaining the catalyst after vacuum drying. The conversion rate of 1-decene is 50 wt % or more. The oligomer has a kinematic viscosity at 40° C. of 6.0-25 mm2/s and a viscosity index of 160-262.