Abstract: This invention discloses a method for preparing hexamethylenediamine, comprising the following steps: (1) under ammoniation reaction conditions, optionally in the presence of a solvent, subjecting hexanediol and ammonia to an ammoniation reaction to obtain an ammoniation reaction product; (2) separating and obtaining from the ammoniation reaction product a stream containing hexamethyleneimine and water, dehydrating the stream containing hexamethyleneimine and water to obtain a dehydrated stream containing hexamethyleneimine, and returning at least part of the dehydrated stream containing hexamethyleneimine as a circulating stream to the step (1), wherein a water content in the dehydrated stream containing hexamethyleneimine is less than 3 wt %, preferably less than 1.5 wt %. The invention can not only improve the yield of hexamethylenediamine but can also prolong the service life of the catalyst.

Abstract: Disclosed is an amphiphilic graphene oxide (GO) temperature-resistant foam stabilizer for maintaining a wide pH range and a preparation method thereof. The amphiphilic GO is produced by dispersing GO in an ice-water bath, then sequentially adding a graphene oxide dispersion liquid, solid paraffin, emulsifier, and intercalation agent using a template method for emulsification and solidification. After washing and filtration, GO-coated paraffin microspheres are obtained. The microspheres are treated with hydrolyzed silane coupling agent, and further reacted with an amino modifier. GO-coated paraffin microspheres are dissolved completely in chloroform, followed by multiple centrifugation washes and freeze-drying to yield the foam stabilizer. The foam stabilizer has improved foam stability under high-temperature conditions across a wide pH range. It also possesses favorable interfacial activity and demonstrates a synergistic foaming effect with foaming agents.

Abstract: Examples described herein relate to a network interface device. The network interface device can include circuitry that is to: receive a first packet comprising a first packet header and a first packet payload; receive multiple subsequent packets comprising multiple packet headers for respective multiple subsequent packets; update at least one of the multiple packet headers; and construct egress packets. In some examples, the egress packets include respective one of the multiple packet headers and the first packet payload.

Abstract: Disclosed are a color correction method for a lighting system and a lighting system, the lighting system includes a first laser set (10), a second laser set (20), a driving assembly (30), a wavelength conversion device (40), and a light-combining assembly (50), where the first laser set (10) is used for emitting first primary light; the second laser set (20) is used for emitting second primary light; the driving assembly (30) is used for driving the first laser set (10) to emit the first primary light in a first timing sequence and a second timing sequence, and driving the second laser set (20) to emit the second primary light in the first timing sequence and the second timing sequence; the wavelength conversion device (40) is used for converting the first primary light into converted light in the second timing sequence; and the light-combining assembly (50) is used for combining the first primary light and the second primary light in the first timing sequence, and combining the second primary light and the c

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for generating images. In one aspect, a method includes: receiving an input text prompt including a sequence of text tokens in a natural language; processing the input text prompt using a text encoder neural network to generate a set of contextual embeddings of the input text prompt; and processing the contextual embeddings through a sequence of generative neural networks to generate a final output image that depicts a scene that is described by the input text prompt.

Abstract: This disclosure provides crystalline, salt forms of a KRAS inhibitor, pharmaceutical compositions comprising a KRAS inhibitor, and efficient and scalable processes for preparing a KRAS inhibitor.

Abstract: The present invention relates to the technical field of rockfall motion tests, and in particular to an indoor rockfall motion test device and a ramming structure, comprising a bearing component, comprising a support, a mounting crossbar arranged on the support, and a release assembly arranged on the mounting crossbar; and a throwing component, comprising a rockfall start section arranged on the support. In the present invention, the slope shape can be adjusted at will, different plates can be replaced for laying, and filling materials can be replaced, so as to simulate different throwing adjustments.

Abstract: The present disclosure provides a method and an apparatus for determining a utilization rate of wireless resources, an electronic device and a storage medium. The method includes acquiring communication data within a statistical period of a cell; determining a channel non-space division occupied wireless resource within the statistical period; determining a channel space division occupied wireless resource within the statistical period; determining a channel available wireless resource within the statistical period; and determining the utilization rate of wireless resources.

Abstract: Provided are systems and methods for performing panoptic segmentation of images and videos using a denoising diffusion model. The panoptic segmentation task is formulated as a conditional discrete data generation problem. This is achieved by learning a generative model for panoptic masks, for example treated as an array of discrete tokens, conditioned on an input image. The generative model can also be applied to video data by including predictions from past frames as an additional conditioning signal. This enables the model to learn to track and segment objects automatically across video frames.

Abstract: A programmed cell death ligand 1 (PD-L1) targeting polypeptide, a molecular imaging probe, and a use thereof are provided. The PD-L1 targeting polypeptide includes any one of the following polypeptides: (1) a polypeptide shown in at least one of SEQ ID NO: 1 to SEQ ID NO: 9; and (2) a polypeptide that is derived from an amino acid sequence of (1) through a substitution and/or a deletion and/or an addition of one or more amino acid residues and has the same function as the amino acid sequence. The magnetic resonance molecular imaging probe based on the PD-L1 targeting polypeptide enables the early diagnosis and evaluation of a tumor and an immune-mediated myocardial injury.

Abstract: The present disclosure includes, among other things, CFTR modulators, pharmaceutical compositions, and methods of making and using the same.

Abstract: A label printing and attaching system includes a label printing device and a label attaching device. The label printing device has an ink tape supply mechanism for supplying an ink tape with a label pattern. A label tape supply mechanism of the label printing device is adapted to supply a label tape that includes a carrier tape and blank label paper adhered to the carrier tape. The label printing device further includes a heat transfer machine adapted to heat transfer the label pattern on the ink tape onto the blank label paper of the label tape to obtain a desired label. The label attaching device has a label picker adapted to pick up the label with the printed label pattern from the label tape, and a moving device adapted to move the label picker to place the picked label with the printed label pattern onto a product.

Abstract: A distributed training method includes a management node that obtains a network topology, where the network topology includes a connection relationship between a core switch and a computing node in a computing cluster. Then, the management node determines a communication plan between N computing nodes based on the network topology, where the N computing nodes are computing nodes that are in the computing cluster and that are configured to train a target model in a distributed manner.

Abstract: Alignment method of mask and substrate includes: summing grayscale values in mark image row by row or column by column respectively, to obtain first and second projection summation curves of rows and columns; calculating first mean value and standard deviation of center coordinates of mask mark, and second one of substrate mark based on above projection summation curves; extracting image contours of mark image, and adding horizontal or vertical processing window to image contours; extracting first contour grayscale curve of each row in horizontal processing window or second one of each column in vertical processing window; calculating third mean value and standard deviation of center coordinates of mask mark, and fourth one of substrate mark according to first or second contour grayscale curve; performing statistical fusion on four mean values and four standard deviations to obtain alignment deviation; and aligning mask and substrate according to alignment deviation.

Abstract: The present disclosure provides a light emitting module and a display apparatus. Alight emitting module according to an embodiment includes a bar-shaped circuit board; a plurality of light emitting devices disposed on the circuit board; and a reflection wall surrounding the light emitting devices, in which the plurality of light emitting devices is divided into at least two strings, and each of the strings includes light emitting devices connected in series.

Abstract: The cable aluminum foil stripping tool includes two tool half-bodies adapted to clamp an exposed aluminum foil layer of a cable from two sides of the cable. Each tool half-body includes a body portion and a tooth-shaped rib formed on an inner side of the body portion and having a tooth-shaped cross section. The tooth-shaped rib scrapes off the exposed aluminum foil layer from the cable when the two tool half-bodies clamping the exposed aluminum foil layer are moved relative to the cable. The cable aluminum foil stripping tool includes an inner insulating layer wrapped by the exposed aluminum foil layer of the cable. The inner insulating layer is elastically deformable when contacting the tooth-shaped rib, such that the inner insulating layer is not scratched by the tooth-shaped rib.

Abstract: The present disclosed an active optical cable. The active optical cable comprises a first connector configured to connect to a Source; a second connector configured to connect to a Sink; a cable located between the first connector and the second connector, wherein the cable comprises a first optical fiber and a second optical fiber; and a multiplexer, with one end coupled to a high-speed signal pin of the first connector or the second connector and another end coupled to the first optical fiber or the second optical fiber, and is configured to select one of the first optical fiber and the second optical fiber as a valid channel. Through the solution provided by the disclosure, signal transmission requirements in multiple use scenarios are adapted, full-function switching of USB and/or DP data of the active optical cable based on a Type-C interface is realized.

Abstract: A hangar is provided for an unmanned aerial vehicle, and is suitable for being arranged on a vehicle. The hangar includes a hangar body, the hangar body being configured to accommodate the unmanned aerial vehicle; a charging apparatus, the charging apparatus being arranged in the hangar body, and the charging apparatus being configured to charge an unmanned aerial vehicle battery, wherein the unmanned aerial vehicle battery includes a first battery mounted on the unmanned aerial vehicle and/or a second battery outside the unmanned aerial vehicle; and a battery pick-and-place apparatus, the battery pick-and-place apparatus being arranged in the hangar body, and the battery pick-and-place apparatus being configured to detach the first battery from the unmanned aerial vehicle and/or mount the second battery into the unmanned aerial vehicle.

Abstract: Embodiments disclosed herein include an apparatus that includes a scraping head that has an inner cavity with open ends and an open bottom. In an embodiment, the scraping head comprises an inner wall with a port through the inner wall, and an outer wall adjacent to the inner wall. In an embodiment, a gap is provided between the inner wall and the outer wall, and a vacuum line is fluidically coupled to the gap.