Abstract: A method and system for monitoring operation of a hydraulic turbine under an extremely low water head, belonging to the technical field of hydraulic turbines.

Abstract: A stereo imaging film includes: a focusing layer including at least one focusing unit, the at least one focusing unit each includes a plurality of micro-nano structures; and a graphic layer including at least two graphic units in a same layer, the at least two graphic units each include a plurality of micrographics, the plurality of micrographics of the at least two graphic units have different arrangements. One of the at least one focusing unit is corresponding to the at least two graphic units, and the at least two graphic units form graphic images with different image heights through the focusing unit. Each focusing unit forms graphic images through the focusing units, and thus the technical problem of poor stereo sensation of the suspended image is solved.

Abstract: The present invention provides a methyl fructoside polyether amine, a preparation method therefor and use thereof, According to the methyl fructoside polyether amine, as a derivative of an alkyl glycoside, provided by the present invention, polyoxyethylene or polyoxypropylene chain links are introduced on the basis of retaining the advantages of safety, no toxicity, no irritation to skin, good biodegradability, good compatibility and the like of the alkyl glycoside, so that the water solubility, flowability and hard water resistance of a product are improved. The methyl fructoside polyether amine has a more excellent emulsifying property, meets the requirements of “green” and “environmental protection”, can be used as an emulsifier, a detergent, a foaming agent, a humectant, a thickening agent, a wetting agent, a dispersing agent, a penetrating agent and the like, and is widely used in the daily chemical industry, especially in the field of detergents.

Abstract: Examples described herein relate to offload reliable transport management to a network interface device and store packets to be resent, based on received packet receipt acknowledgements (ACKs), into one or more kernel space queues that are also accessible in user space.

Abstract: An obstacle avoidance playing method includes acquiring human eye position information of a viewer in a playing scene and three-dimensional data of an object in a respective viewing space region; determining a visible region of a display screen based on the human eye position information, the three-dimensional data of the object, and size and position information of the display screen, the visible region corresponding to a portion of the display screen that is unobstructed to the viewer; and displaying image content using (i) a matched obstacle avoidance mode determined based on the visible region and (ii) a preset obstacle avoidance strategy such that the image content is displayed in the visible region.

Abstract: Provided are a reductive amination catalyst for preparation of polyether amine and its preparation method. According to the reductive amination catalyst, a reductive amination reaction includes: enabling polyether polyols to undergo a hydroamination reaction in presence of the reductive amination catalyst to prepare polyether amine. The reductive amination catalyst includes an MgAl2O4 carrier, Ni, Pd and Cu active components loaded thereon. ?-Al2O3 modified by MgO is used as the carrier for the amination catalyst, and the modified MgAl2O4 carrier has characteristics of high temperature resistance, high mechanical strength and low surface acidity, which can better adapt to the high temperature and high pressure reaction conditions required for low-carbon alkane dehydrogenation. In presence of the catalyst, the temperature of a reaction system is low, and the activity or selectivity of the catalyst is suitable for oligomeric oxypropylene ether.

Abstract: The disclosure belongs to the technical field of organic macromolecule compound preparation, and discloses a fatty alcohol polyether amine polyether and a preparation method and application thereof. The method includes: using a fatty alcohol as an initiator, and adding a first epoxy compound for a polymerization reaction to obtain a fatty alcohol polyether; then, taking a hydroamination reaction between the fatty alcohol polyether and liquid ammonia to obtain a fatty alcohol polyether amine; and finally, taking a polymerization reaction between the fatty alcohol polyether amine and a second epoxy compound to obtain the fatty alcohol polyether amine polyether. The fatty alcohol polyether amine polyether prepared by the disclosure has the advantages of safety, nontoxicity, no skin stimulation, biodegradability, high compatibility, green and environmental-friendly effects, etc., and can be used for preparing quaternary ammonium salt intermediate products and various industrial solvents.

Abstract: Some embodiments of the disclosure provide a method for calibrating extrusion parameters in an additive manufacturing system. In some examples, the method includes the following steps. (1) Executing extrusion commands and printing a plurality of tracks based on one or more printing templates at different extrusion rates. (2) Scanning the plurality of tracks to obtain at least one image of the plurality of tracks. (3) Processing the at least one image of the plurality of tracks to obtain geometry information. (4) Generating a printing model based on the geometry information and the extrusion commands. (5) Evaluating the printing model. (6) If the printing error result is within the pre-defined threshold, adopting the printing model as a reference for choosing extrusion parameters at a given extrusion rate. (7) If the printing error result is not within the pre-defined threshold, repeating steps (1)-(6).

Abstract: The present disclosure relates to an amination production method of micromolecular polyoxypropylene ether, belonging to the technical field of preparation or chemical processing of organic compounds.

Abstract: Examples described herein relate to offload reliable transport management to a network interface device and store packets to be resent, based on received packet receipt acknowledgements (ACKs), into one or more kernel space queues that are also accessible in user space.

Abstract: Techniques for improving options templates are described. The techniques may be performed at least in part by a network edge device and may include receiving, from a network collector device, a request for an options template download, the request indicating whether a full options template or partial options template are requested. Based at least in part on whether a full options template or a partial options template are requested, the method may also include, transmitting a response to the network collector device including a segment of the options template, wherein each segment includes a flag indicating whether the segment is a last segment of at least one more segment will follow. Finally, the method may include receiving from the collector device and in response to transmitting a segment having the flag indicating the segment is a last segment, an acknowledgement that the full options template has been received.

Abstract: Disclosed are to a supported catalyst used for synthesizing polyether amine, and a preparation method and use thereof. The supported catalyst introduces Mo and CeO2 into Ni and Cu active components. By means of the cooperation of Ni, Cu and Mo, CeO2 and Ni form more active sites, such that the supported catalyst can have high reaction activity and selectivity. By using the supported catalyst to synthesize polyether amine, the amination efficiency and selectivity of polyether polyol can be greatly enhanced, thereby preparing the polyether amine with light color and narrow molecular weight distribution. In addition, the cost of the catalyst can be reduced, a process condition is relatively mild, and the disadvantage of low reaction activity of a nickel-based catalyst in synthesizing small molecule polyether amine can be overcome, such that the supported catalyst has a desirable industrial application prospect.

Abstract: Techniques for improving options templates for network traffic monitoring and analysis, using pull mode by a network collector device, and sending an acknowledgement, by the network collector device that the download was successfully received are described. The techniques may include transmitting, by a network collector device and to a network edge device, a request to download a full options template, receiving, by the network collector device, responses from the network edge device, each response including a segment of the full options template and each segment including a last segment flag indicating whether the segment is a last segment, and in response to receiving a segment having the last segment flag set, transmitting, by the network collector device and to the network edge device, an acknowledgement that the full options template has been received.

Abstract: A method for testing burning performance of a dark-colored cigarette using a dark-colored cigarette paper is provided. The dark-colored cigarette paper has a grayscale less than 255. The method includes: simulating, by a robotic arm, a cigarette smoking process and environment; acquiring, by a full-vision camera system, an image of a burn line and ash column region of the dark-colored cigarette; and analyzing a burning performance indicator of the dark-colored cigarette according to coordinate information of the burn line and ash column region. The method is based on a surface reflection characteristic of the dark-colored cigarette paper and a principle of optical reflection to light and highlight an edge of the dark-colored cigarette sample by a light source at a certain angle from a side. In this way, the method forms a chromatic aberration to localize the dark-colored cigarette sample, thereby testing the burning performance of the dark-colored cigarette sample.

Abstract: Examples described herein relate to offload reliable transport management to a network interface device and store packets to be resent, based on received packet receipt acknowledgements (ACKs), into one or more kernel space queues that are also accessible in user space.

Abstract: A method for testing burning performance of a dark-colored cigarette using a dark-colored cigarette paper is provided. The dark-colored cigarette paper has a grayscale less than 255. The method includes: simulating, by a robotic arm, a cigarette smoking process and environment; acquiring, by a full-vision camera system, an image of a burn line and ash column region of the dark-colored cigarette; and analyzing a burning performance indicator of the dark-colored cigarette according to coordinate information of the burn line and ash column region. The method is based on a surface reflection characteristic of the dark-colored cigarette paper and a principle of optical reflection to light and highlight an edge of the dark-colored cigarette sample by a light source at a certain angle from a side. In this way, the method forms a chromatic aberration to localize the dark-colored cigarette sample, thereby testing the burning performance of the dark-colored cigarette sample.

Abstract: Techniques for improving options templates for network traffic monitoring and analysis, using pull mode by a network collector device, and sending an acknowledgement, by the network collector device that the download was successfully received are described. The techniques may include transmitting, by a network collector device and to a network edge device, a request to download a full options template, receiving, by the network collector device, responses from the network edge device, each response including a segment of the full options template and each segment including a last segment flag indicating whether the segment is a last segment, and in response to receiving a segment having the last segment flag set, transmitting, by the network collector device and to the network edge device, an acknowledgement that the full options template has been received.

Abstract: A video summarization method that includes: obtaining an attention coding parameter of a user based on behavior data of the user; determining, for each clip included in a target video, whether the clip is a clip of interest to the user, based on the attention coding parameter of the user; based on determining that at least one clip included in the target video is a clip of interest, identifying, for each clip of interest included in the target video, at least one interest frame from the clip of interest; and obtaining a video summary of the target video by combining the interest frame from each clip of interest.

Abstract: Disclosed is an indirect enzyme-linked immunosorbent assay (ELISA) detection kit based on p30 protein and p22 protein of African swine fever (ASF) p30 and p22, belonging to the technical field of animal biological products manufacturing. The indirect ELISA detection kit includes the p30 protein with an amino acid sequence as shown in SEQ ID NO: 2 and the p22 protein with an amino acid sequence as shown in SEQ ID NO: 4.

Abstract: The present disclosure concerns a device for forming a multi-flavor composite structure filter rod in one step, including the following components: a tow transmission belt, a tow guiding horn-shaped mouth, a tow assembly paper collection groove, a cigarette lap adhesive applying device and multi-flavor adding devices. According to shapes and types of flavors, the multi-flavor adding devices are arranged in different sections to obtain one-step formation of the multi-flavor composite structure filter rods. The present disclosure also discloses a one-step method of forming the multi-flavor composite structure filter rod using the one-step forming device.