Abstract: The method and system disclosed herein presents a method and system for capturing, by a depth-perception device on a mobile robot moving in an environment, depth-perception information at a first location within a portion of the environment. The method includes capturing, by a camera device on the mobile robot, an image frame at the first location within the portion of the environment, generating a three-dimensional point cloud representing the portion of the environment based on the depth-perception information and the image frame, extracting semantic information by providing the frame and the point cloud to a neural network model configured to perform semantic segmentation, associating the semantic information to the three-dimensional point cloud, projecting the three-dimensional point cloud onto a two-dimensional plane to form a first two-dimensional map; and demarcating the first two-dimensional map with a plurality of different regions based on the semantic information.

Abstract: Provided is a parent phytase variant, which relates to the technical field of protein engineering. The variant, relative to the parent phytase thereof, has one or more amino acid substitutions at positions corresponding to positions 295, 349, and 374 of SEQ ID NO: 1. Compared to the parent phytase, the variant has increased thermal stability.

Abstract: The present invention belongs to the technical field of gene therapy, and particularly relates to a series of lipid compounds as well as a lipid carrier, nucleic acid lipid nanoparticle composition and pharmaceutical preparation containing the same. A compound having a structure of a formula (I) provided by the present invention can be used for preparing a lipid carrier together with other lipid compounds, and exhibits pH response, and the entrapment efficiency to a nucleic acid drug is high, which greatly improves in-vivo delivery efficiency of the nucleic acid drug; and furthermore, a lipid compound with a specific structure can be chosen as a lipid carrier based on an organ in which the nucleic acid drug needs to be enriched, having a good market application prospect.

Abstract: Example radar systems, optical detectors, vehicles, and optical detection methods are provided. An example radar system includes a laser device and an optical detector. The optical detector can include a first polarization scanner and a photosensitive device. The laser device can be configured to emit detection laser. The first polarization scanner can be configured to refract an echo signal of the detection laser, where a refractive index of the first polarization scanner is variable. The photosensitive device can be configured to sense the echo signal refracted by the first polarization scanner.

Abstract: The present invention relates to the technical field of an automatic detection trigger device, and discloses an automatic detection trigger device for a quantitative compressed administration aerosol. The automatic detection trigger device for the quantitative compressed administration aerosol includes a main machine body, wherein the main machine body consists of a main machine front cover, a main machine rear cover, a battery module and a driving assembly; the driving assembly includes a driving control module and a driving gear module; a charging port is formed at an outer side of the main machine front cover; a limiting pedestal is clamped at a bottom end of the main machine front cover; and an aerosol medicine is fixedly mounted at the bottom of an inner cavity of the main machine front cover.

Abstract: The method and system disclosed herein presents a method and system for capturing, by a camera disposed on a device moving in an environment, a plurality of image frames recorded in a first coordinate reference frame at respective locations within a portion of the environment in a first time period; capturing, by an inertial measurement unit disposed on the device, sets of inertial odometry data recorded in a second coordinate reference frame; determining a rotational transformation matrix that corresponds to a relative rotation between the first reference frame and the second reference frame; and determining a scale factor from the matching pairs of image frames. The rotational transformation matrix defines an orientation of the device, and the scale factor and the rotational transformation matrix calibrate the plurality of image frames captured by the camera.

Abstract: An optical component includes a first lens and a second lens that are arranged in sequence in an emission direction of a beam and are disposed opposite relative to each other. The first lens has a first shaping surface and a second shaping surface that are disposed opposite to each other, and the second lens has a third shaping surface and a fourth shaping surface that are disposed opposite to each other. The first shaping surface and the third shaping surface form a first shaping surface group to perform optical path collimation on a first polarization direction of the beam. The second shaping surface and the fourth shaping surface form a second shaping surface group to perform optical path collimation on a second polarization direction of the beam.

Abstract: A compact optical device, such as an optical transmitter or transceiver, including a folded configuration, where an optical signal generated by a laser source propagates in a first direction, then is redirected in an orthogonal direction, and then redirected again to propagate in a second direction opposite the first direction. In accordance with the folded configuration, the optical signal from the laser source is coupled to a Mach-Zehnder interferometer (MZI) modulator that includes a thin-film lithium niobate (TFLN) waveguide coupled to a radio frequency (RF) transmission line to produce an RF signal modulated optical signal for remote transmission.

Abstract: This application discloses a signal receiving method and device, a medium, and a radar system. The radar system includes: a window, a radar transmitter, a radar receiver, a processor, and a signal receiving circuit. The radar transmitter is configured to: transmit a radar detection signal to a front obstacle through the window. The radar receiver is connected to the signal receiving circuit, and receive a reflected signal generated by the obstacle, and transmit the reflected signal to the signal receiving circuit. The signal receiving circuit is connected to the processor, and when the radar transmitter transmits the radar detection signal, receive, after preset duration, the reflected signal where the preset duration is a sum of first duration required for the radar detection signal to arrive at the window and second duration required for the reflected signal to arrive at the radar receiver from the window.

Abstract: The method and device disclosed herein presents a method that includes capturing, by an optical sensor disposed on a device moving in an environment, a plurality of optical data at respective locations within a portion of the environment; capturing, by a wheel encoder disposed on the device, a set of encoder data corresponding to the plurality of optical data at the respective locations; determining a first relative motion based on the plurality of optical data; determining a corresponding second relative motion based on the set of encoder data. In accordance with determining that a difference between the first relative motion and the corresponding second relative motion is larger than a first threshold: increasing a counter indicating a slip event of the wheel encoder. The slip event corresponds to a wheel of the device advancing and the corresponding second relative motion being below a second threshold.

Abstract: The present disclosure belongs to the technical field of gene therapy, and specifically relates to a series of lipid compounds as well as lipid vectors, nucleic acid lipid nanoparticle compositions, and pharmaceutical preparations containing the same. The compound having the structure of formula (I) provided by the present disclosure may be used in combination with other lipid compounds to prepare a lipid vector, which exhibits pH responsiveness, has high encapsulation efficiency for nucleic acid drugs, and greatly enhances the in-vivo delivery efficiency of nucleic acid drugs. Moreover, it is possible to select lipid compounds with different structures as lipid vectors to adjust the enrichment of nucleic acid drugs in different organs, thereby having good market application prospect.

Abstract: Described herein is a method for preparing a flavor composition, typically a dehydrated and de-alcoholized flavor composition, by decreasing or removing water and ethanol from a strong alcoholic flavor composition. The method includes the steps of treating the strong alcoholic flavor composition by a dehydration process and dealcoholization process. Also described herein are flavor compositions obtainable by this method, flavored consumer products including the same and methods and uses thereof.

Abstract: A ranging system and a mobile platform are provided. The ranging system includes a laser, a coaxial optical lens group, a mirror group, a moving component, and a processing circuit. When the laser emits laser light to the mirror group by using the coaxial optical lens group, the moving component drives the mirror group to rotate, so that the laser light is irradiated to a measured object at different angles, to implement ranging of the measured object. The moving component bears a light object, so that the moving component rotates quickly. Therefore, if the ranging system is installed on a vehicle, the ranging system can implement fast ranging of incoming and outgoing vehicles and meet a ranging requirement of an autonomous driving technology.

Abstract: A testing device may receive, via a receiving port of a radio frequency (RF) frontend of the testing device, a downlink pilot signal, and may determine a phase associated with the downlink pilot signal. The testing device may transmit, via a transmitting port of the RF frontend of the testing device, an uplink pilot signal. The testing device may receive, after transmitting the uplink pilot signal, the uplink pilot signal via the receiving port of the RF frontend of the testing device. The testing device may determine, after receiving the uplink pilot signal, a phase associated with the uplink pilot signal. The testing device may adjust, based on a phase difference between the phase of the downlink pilot signal and the phase of the uplink pilot signal, one or more transmission settings of the testing device.

Abstract: Systems and methods for embedded content object collaboration. A server of a cloud-based content management system hosts an access point to a set of executable code. The executable code is configured to facilitate interaction with a user. The user initiates operations that are performed either at the cloud-based content management system or at the at least one user device, or both. The operations include (1) user interactions with a shared content object, (2) user selection of at least one embedded content object within the shared content object, (3) editing the embedded content object at the at least one user device, (4) replicating one or more changes performed on the embedded content object to a remotely-stored instance of the embedded content object, and (5) downloading at least a portion of the updated, remotely-stored instance of the embedded content object to the user device.

Abstract: Described herein is a method for preparing a dehydrated and de-alcoholized flavor composition by decreasing or removing water and ethanol from a flavor composition, the method including the steps of treating the flavor composition by a dehydration process and dealcoholization process. Also described herein are flavor compositions obtainable by this method, flavored consumer products comprising the same, and methods and uses thereof.

Abstract: A scheduling method and a method for establishing a schedule list for user equipment (UE) of NB-IoT are provided. The method for establishing the schedule list includes the following steps: synchronizing to a cell; receiving at least one system information parameter from the cell, the at least one system information parameter including at least one system information type and a narrowband system information block type; establishing multiple sub-lists according to the distributions of the at least one system information type and the narrowband system information block type, each element of the sub-lists representing an available subframe; assigning a sub-list code to each sub-list; calculating the number of elements for each sub-list; and establishing a list according to the at least one system information parameter, the sub-list codes, and the numbers of the elements.

Abstract: The disclosure relates to a method for producing heavy oil by generating solvents in situ in the reservoir, an electric heating device is used to heat up the crude oil in the reservoir near the wellbore to the target temperature. Chemical reaction additives are injected into the heating section to meet the preset reaction conditions for the high temperature thermal cracking and aquathermolysis of crude oil, so as to generate light hydrocarbon components and gases. Under the effect of heat and gravity, the light hydrocarbon components and gases rise to the steam chamber. The light hydrocarbons and some gases that move to the vapor-liquid interface of the steam chamber are dissolved in the crude oil to reduce the viscosity of crude oil and increase the production rate of crude oil.

Abstract: A scheduling method for user equipment (UE) of NB-IoT is provided. The scheduling method includes: synchronizing to a cell; receiving from the cell at least one system information parameter that includes a maximum number of repetitions, periods, and offsets of NPDCCH search spaces; establishing a list according to the at least one system information parameter, the list recording multiple available subframes and each available subframe being labeled with an index; calculating a numeral of a start subframe of target NPDCCH repetitions according to a numeral of a target subframe, the period, and the offset; searching the list for a start index corresponding to the start subframe using the numeral of the start subframe; searching the list for a target index corresponding to the target subframe; determining whether the target subframe is within the interval of the target NPDCCH repetitions; and determining whether the target subframe is an NPDCCH candidate subframe.

Abstract: The disclosure relates to a method for producing heavy oil by generating solvents in situ in the reservoir, an electric heating device is used to heat up the crude oil in the reservoir near the wellbore to the target temperature. Chemical reaction additives are injected into the heating section to meet the preset reaction conditions for the high temperature thermal cracking and aquathermolysis of crude oil, so as to generate light hydrocarbon components and gases. Under the effect of heat and gravity, the light hydrocarbon components and gases rise to the steam chamber. The light hydrocarbons and some gases that move to the vapor-liquid interface of the steam chamber are dissolved in the crude oil to reduce the viscosity of crude oil and increase the production rate of crude oil.