Abstract: A low-dispersion single-mode optical fiber includes a core and claddings covering the core. The core has a relative refractive index difference of 0.30-0.65% and a radius of 2.5-4.5 ?m. The claddings include first, second, third cladding layers and an outer cladding arranged sequentially from inside to outside. The first cladding layer covers the core, and has a relative refractive index difference of ?0.70% to ?0.30% and a radius of 4.5-7.5 ?m. The second cladding layer covers the first cladding layer, and has a relative refractive index difference of ?0.20% to ?0.25% and a radius of 7.0-12.0 ?m. The third cladding layer covers the second cladding layer, and has a relative refractive index difference of ?0.60% to 0.00% and a radius of 10.0-20.0 ?m. The outer cladding covers the third cladding layer, and is a layer made of pure silicon dioxide glass.

Abstract: A display system includes: a light source system configured to emit light beams; a scanner configured to scan the light beams on the surface of a spatial light modulator in the form of a light spot, the light spot corresponding to multiple pixels of the spatial light modulator; a spatial light modulator configured to modulate, according to an image modulation signal from a processing and control system, the light spot projected onto the spatial light modulator by the scanner to output image light; a processing and control system configured to output a light source timing modulation signal to a light source modulation device according to an input image signal and output an image modulation signal to the spatial light modulator; and a light source modulation devices configured to adjust the output brightness of the light source system according to the light source timing modulation signal.

Abstract: A display panel, a method for manufacturing the same and a display device are provided. In a second pixel region of the display panel, there is a first gap between first and second electrical connection elements in a first electrical connection layer, there is a second gap between third and fourth electrical connection elements in a second electrical connection layer, a third electrical connection layer is coupled to a fifth signal line pattern included in each sub-pixel of a corresponding sub-pixel group. The fifth signal line pattern is used to transmit a fifth signal with a fixed electrical potential, and an orthographic projection of the third electrical connection layer onto a substrate of the display panel covers at least part of an orthographic projection of the first gap onto the substrate and at least part of an orthographic projection of the second gap onto the substrate.

Abstract: An image display method includes according to image information of a current image frame to be displayed, adjusting the brightness of a first light source (11) having a first light field, and steering light of a second light source (12) to form a second light field, so as to enable the first light field provided by the second light source (11) and the second light field provided by the second light source (12) to work in concert to satisfy displaying of display partitions of the image frame to be displayed. The image display method implements high-dynamic range display of images, and facilitates improvement of dark field detail expression of images to be displayed. Also provided are an image display apparatus and a projection device.

Abstract: A resource determination device according to a storage unit configured to store a model indicating a relationship of: a processing load of a virtual machine; a processing performance of the virtual machine; a resource operational status of a physical machine accommodating the virtual machine; and a resource operational status of the virtual machine, with respect to an amount of resources allocated to the virtual machine, and a calculation unit configured to calculate the amount of resources allocated to the virtual machine in a way such that a requirement for the processing performance of the virtual machine and a policy of the resource operational status of the virtual machine are each satisfied based on a monitoring result of the resource operational status of the physical machine accommodating the virtual machine, the processing load of the virtual machine, and the model stored in the storage unit.

Abstract: A battery assembly locking device and an automated guided vehicle comprising the battery assembly locking device. The battery assembly locking device comprises: a battery assembly (1); locking hooks (12), which are installed on the battery assembly (1); a locking member (22), which is installed on a vehicle body (3) of an automated guided vehicle; and unlocking members (13), which are installed on the battery assembly (1), wherein the battery assembly (1) is locked on the locking member (22) by means of the locking hooks (12), and is locked on the vehicle body (3) of the automated guided vehicle; and the locking hooks (12) push the locking member (22) by means of the unlocking members (13), and are unlocked from the locking member (22).

Abstract: A display apparatus and an information alert method are disclosed. The method includes: while a first display is playing, controlling, according to acquired alert information, a second display to display an information alert interface, where the alert information displayed on the information alert interface is configured for indicating a state of at least one terminal device connected with the display apparatus.

Abstract: Disclosed are a chassis of an automated guided vehicle and an automated guided vehicle. The chassis includes a front frame (1) and a rear frame (2) that are engaged with each other in a hinged joint manner, so as to allow a relative folding between the rear frame (2) and the front frame (1). The relative folding enables the driving wheels and the driven wheels to touch the ground on a sunken road at the same time to prevent that only the driven wheels (10) touch the ground while the driving wheels (9) slip, and increases the approach angle of the chassis on a convex road to prevent the front end of the chassis from touching any obstacle, which improve the safety of the vehicle. Moreover, the damping device (3) restricts the folding angle of the front frame (1) and the rear frame (2) to prevent that the relative folding angle of the front frame (1) and the rear frame (2) is too large to realize the transport function, and damps the folding angle for reducing vibration.

Abstract: An operation monitoring system and monitoring method are provided, the operation monitoring system is used for monitoring at least one agricultural machine, so as to control an operating range of the agricultural machine, the operation monitoring system includes a storage device and a processor, the processor recognizes at least one operating area and at least one non-operating area of an operation environment, and generates at least one boundary between the operating area and the non-operating area, the processor further generates least one electronic fence at the at least one boundary, the processor further acquires the position of the electronic fence and monitors a position of the agricultural machine, so as to monitor whether the agricultural machine is operating in the operating area on a side of the electronic fence, thereby controlling the operating range of the agricultural machine.

Abstract: Disclosed is a chassis for an unmanned guided carrier, wherein the chassis comprises a chassis body (100), two driving wheel set modules (200) and a torsion shaft caster module (300) mounted on the chassis body (100), the torsion shaft caster module (300) comprises a torsion shaft (310) rotatably mounted on the chassis body (100) and two supports (320), one end of each of the two supports (320) is fixed to one of both ends of the torsion shaft (310) respectively, an universal wheel (330) is mounted at the other end of each of the two supports (320), an elastic member (340) is provided between said other end of each of the two supports (320) mounted with the universal wheel (330) and the chassis body (100), the elastic member (340) applies an elastic force to the universal wheel (330) to make it cling to a ground. The embodiment of the application also discloses an unmanned guided carrier.

Abstract: Histone deacetylases (HDACs) inhibitors are disclosed. The HDACs inhibitors possess cytotoxicities to various cancer cell lines. They are useful for treating a tumor associated with deregulation of the activity of histone deacetylases in a subject in need thereof, in one embodiment, the HDACs inhibitors of the invention are useful for treating glioma, breast cancer, colon cancer, target cell lung cancer, adenocarcinoma of the lung, small cell lung cancer, stomach cancer, liver cancer, ovary adenocarcinoma, pancreas carcinoma, prostate carcinoma, promyiocytic leukemia, chronic myelocytic leukemia, or acute lymphocytic leukemia in a subject in need thereof.

Abstract: Disclosed are a light source system and control method thereof, as well as a display device and control method thereof. The light source system comprises: an array light source, comprising M illuminants with independently adjustable brightness; an optical switch, arranged on an emergent optical path of the army light source, for guiding illumination light emitted by the M illuminants to N sub-regions of a preset light region; and a control device for controlling an optical switch to adjust at a preset frame rate the direction of the illumination light emitted by at least part of the M illuminants, and guiding the illumination light emitted by at least part of the illuminants to sub-regions different from the previous one or more image frames of the current image frame.

Abstract: The invention provides a safety system for a cleanroom, which comprises a cleanroom garment provided with a plurality of RFID (radio frequency identification) tags, a face recognition device arranged at an entrance of the cleanroom, and a first RFID reader arranged beside at least one machine in the cleanroom, wherein the first RFID reader is used for identifying the RFID tags on the cleanroom garment, and a KVM network power interrupter connected to a display screen of the machine.

Abstract: A chiral catalyst represented by formula (II) is provided. In formula (II), Y independently includes hydrogen, fluorine, trifluoromethyl, isopropyl, tert-butyl, CmH2m+1 or OCmH2m+1, wherein m=1-10 and n=1-10. A heterogeneous chiral catalyst is also provided. The heterogeneous chiral catalyst includes the chiral catalyst represented by formula (II), and a substrate connected to the chiral catalyst.

Abstract: Reconfigurable nonlinear frequency conversion waveguide chip based on Mach-Zehnder interferometer coupled micro-ring, the method is based on the integration of waveguide components of phase-adjustable Mach-Zehnder interferometers (MZI) and micro-ring resonators. The chip is illustrated by FIG. 1. The MZI couples light and photons into and output of the micro-ring resonator and controls the micorings' quality factor thus optimize the nonlinear frequency conversion processes inside the ring by the phase-modulator inside the MZI. The micro-ring resonator enables the nonlinear optical generation of new frequency light beams and quantum light sources based on the second-order or third-order nonlinear optical process. Other optical waveguide components in region I and III of FIG. 1 are linear optical circuits for power splitting of pump beams and post-process of generated light beams or photons.

Abstract: A chiral catalyst represented by formula (II) is provided. In formula (II), Y independently includes hydrogen, fluorine, trifluoromethyl, isopropyl, tert-butyl, CmH2m+1 or OCmH2m+1, wherein m=1-10 and n=1-10. A heterogeneous chiral catalyst is also provided. The heterogeneous chiral catalyst includes the chiral catalyst represented by formula (II), and a substrate connected to the chiral catalyst.

Abstract: Aweigh module with a load-receiving portion, a fixing portion, and a parallel guide portion also has a lever system with a first lever and a second lever. An additional portion of the load-receiving portion extends towards the fixing portion. An extension of the fixing portion extends towards the load-receiving portion. A first end of the first lever is connected by joints to the additional portion and the extension portion. A first end of the second lever is connected by joints to the second end of the first lever and to the extension portion. All joints are of a thin sheet structure. The second end of the second lever is configured for connection to a magnetic system. The weigh module is manufactured integrally. The use of the structure according to the present invention can meet design requirements of large range and small size of sensors.

Abstract: An internal calibration mechanism of a weigh module has a driving structure, a calibration weight and a weight support frame. The weight support frame has an opening or a groove for loading the calibration weight. The weight support frame is connected to a load receiving portion at both sides thereof and is connected to a portion of a fixing portion that extends towards the load-receiving portion. In one case, the weight support frame, the load-receiving portion and the fixing portion are integrally formed. In another case, a force transmission connecting portion and a fulcrum connecting portion of the weight support frame are fixedly connected, respectively, to the load-receiving portion and to the extending portion of the fixing portion. In another case, flexure hinges connect the weight support frame to the load-receiving portion at both sides thereof and connect the weight support frame to the extending portion.

Abstract: A chiral catalyst represented by formula (I) is provided. In formula (I), Z?Z1 or Z2, and the combination of Z1 and Z2 in formula (I) includes Y independently includes hydrogen, fluorine, trifluoromethyl, isopropyl, tert-butyl, CmH2m+1 or OCmH2m+1, m=1-10, and n=1-10. A heterogeneous chiral catalyst including the chiral catalyst is also provided.

Abstract: A projection display system includes a control assembly, an optical path changing device, a light source assembly, a digital micromirror device, and a projection lens. The control assembly is configured to determine whether a resolution of an image to be projected is greater than a preset resolution. If the resolution of the image to be projected is greater than the preset resolution, the control assembly divides the image to be projected into N sub-images, wherein N is greater than or equal to 2. For each sub-image: the control assembly is further configured to determine a first signal, a second signal, and a third signal according to the sub-image, send the first signal to the light source assembly, send the second signal to the digital micromirror device, and send the third signal to the optical path changing device. The projection lens is configured to project the N sub-images at different times.