Abstract: A retractable door sill, including: a mounting base, the mounting base including an upper fixing base and a lower fixing base; a rotating drum, the rotating drum being arranged between the upper fixing base and the lower fixing base, a partition cloth, a torsion spring being configured to make the rotating drum rotate in one direction around its axis, the rotating drum wind up the partition cloth; and an adjusting device, the adjusting device comprising an adjusting rod and an adjusting mechanism, one end of the torsion spring being connected to the rotating drum, the other end of the torsion spring being connected to the adjusting rod of the adjusting device, the adjusting mechanism being configured to enable the adjusting rod to rotate unidirectionally around its own axis, and the adjusting rod being configured to change a torsional deformation of the torsion spring through its own rotation.

Abstract: The present disclosure discloses a locking seat, which comprises a shell and a pivot seat pivotally installed on the shell, wherein the pivot seat is provided with a positioning hole, and a unidirectional positioning device is provided between the shell and the pivot seat. The present disclosure further discloses a simple telescopic door fence, which comprises two installing seats oppositely provided and a folding rod pivotally installed between the two installing seats, wherein at least one of the installing seats is provided with the locking seat, the folding rod is rotatable in a predetermined direction, at least two folding rods are provided, and a cloth is provided between the two folding rods. The unidirectional rotation of the folding rod is realized by the unidirectional positioning device, so that the cloth can be adjusted and rolled up.

Abstract: Provided is a locking head apparatus of a dual automatic locking protective door bar. The locking head apparatus includes a housing, a first toggling button, a second toggling button, a sliding seat, a fixation seat, a linkage locking mechanism and a rotating mechanism. A hydraulic rod is mounted inside the fixation seat, and the hydraulic rod is connected to the sliding seat. The second toggling button is exposed on the housing and connected with a toggling button seat. The toggling button seat is mounted inside the housing through a first spring, thereby forming an automatic resetting mechanism. With the adoption of the locking head apparatus, the dual automatic locking may be realized, the dual protection is achieved, and a child is prevented from opening the door bar after learning the unlocking skill.

Abstract: The present disclosure provides a gene combination for expressing and producing terrequinone A in Escherichia coli and use thereof. The gene combination includes a tdiAS gene, a tdiBS gene, a tdiCS gene, a tdiDS gene, a tdiES gene, an sfpS gene, an ScCKS gene, and an AtIPKS gene with nucleotide sequences set forth in SEQ ID NOS:1 to 8. In the present disclosure, a recombinant engineered strain capable of producing terrequinone A having anti-cancer activity is obtained by separately constructing recombinant plasmids pC02 and pU03 through the eight genes and transforming the two recombinant plasmids into E. coli. The content of terrequinone A in a fermentation broth thereof is 106.3 mg/L, which has potential application value in the biopharmaceutical field.

Abstract: The present discloses an automatically locked retractable protective door sill, including a retractable curtain assembly, a scroll assembly, an upper fixing base and a lower fixing base, a dial mechanism and a locking mechanism are arranged in the upper fixing base, the locking mechanism includes a hydraulic rod capable of retracting at a fixed time, and the hydraulic rod is connected to the dial mechanism; the sliding base is connected to the hydraulic rod, and the hydraulic rod drives the sliding base and drives the linkage base to reset automatically, so the automatic locking of the locking mechanism is achieved, and then the scroll assembly is locked. The whole device has a simpler structure and more convenient operation, the dial button may be manually pushed to return for locking after not reaching the set time, so as to prevent children opening the door sill during an automatic locking process.

Abstract: The present discloses an automatically locked retractable protective door sill, including a retractable curtain assembly, a scroll assembly, an upper fixing base and a lower fixing base, a dial mechanism and a locking mechanism are arranged in the upper fixing base, the locking mechanism includes a hydraulic rod capable of retracting at a fixed time, and the hydraulic rod is connected to the dial mechanism; the sliding base is connected to the hydraulic rod, and the hydraulic rod drives the sliding base and drives the linkage base to reset automatically, so the automatic locking of the locking mechanism is achieved, and then the scroll assembly is locked. The whole device has a simpler structure and more convenient operation, the dial button may be manually pushed to return for locking after not reaching the set time, so as to prevent children opening the door sill during an automatic locking process.

Abstract: The present disclosure discloses a locking seat, which comprises a shell and a pivot seat pivotally installed on the shell, wherein the pivot seat is provided with a positioning hole, and a unidirectional positioning device is provided between the shell and the pivot seat. The present disclosure further discloses a simple telescopic door fence, which comprises two installing seats oppositely provided and a folding rod pivotally installed between the two installing seats, wherein at least one of the installing seats is provided with the locking seat, the folding rod is rotatable in a predetermined direction, at least two folding rods are provided, and a cloth is provided between the two folding rods. The unidirectional rotation of the folding rod is realized by the unidirectional positioning device, so that the cloth can be adjusted and rolled up.

Abstract: The present invention belongs to the technical field of medical instruments, and discloses a multifunctional compound light penetration enhanced imaging system and an enhanced imaging method. The structural design of the present invention is reasonable. Through the cooperation of the first working channel tube, the second working channel tube, and the third working channel tube, the size of the channel is switched. When the system shrinks to the minimum, the opening size of the wound is only ? of that when the system is fully opened, which is suitable for a double-channel spinal endoscopic surgery. When the system is expanded to the maximum, it is suitable for transforaminal endoscopic surgery, and is suitable for multiple surgical modes. By adding a special red light component on the basis of the white light to form compound light illumination and increase the system transmittivity, the background penetration is realized.

Abstract: The present invention belongs to the technical field of medical instruments, and discloses a multifunctional compound light penetration enhanced imaging system and an enhanced imaging method. The structural design of the present invention is reasonable. Through the cooperation of the first working channel tube, the second working channel tube, and the third working channel tube, the size of the channel is switched. When the system shrinks to the minimum, the opening size of the wound is only 1/3 of that when the system is fully opened, which is suitable for a double-channel spinal endoscopic surgery. When the system is expanded to the maximum, it is suitable for transforaminal endoscopic surgery, and is suitable for multiple surgical modes. By adding a special red light component on the basis of the white light to form compound light illumination and increase the system transmittivity, the background penetration is realized.

Abstract: A transcript of a conference (e.g., a video conference, an audio conference, or a telephone call with two or more participants) is processed to extract a conference summary. A graphical user interface is presented that enables a user to edit highlighting to select portions of a conference recording for inclusion in the conference summary. The user can edit highlighting on strings of a transcript and/or on a playback slide bar and the highlighting edits are propagated to both of these interfaces. Video clips selected for inclusion in a summary based on timestamps of strings in a transcript may be extended forward in time to incorporate a nearest I-frame of video. The short video or audio summary may be presented to users along with a text summary of the conference to enable efficient storage and transmission of information from the conference within a unified communications system.

Abstract: A retractable door sill, including: a mounting base, the mounting base including an upper fixing base and a lower fixing base; a rotating drum, the rotating drum being arranged between the upper fixing base and the lower fixing base, a partition cloth, a torsion spring being configured to make the rotating drum rotate in one direction around its axis, the rotating drum wind up the partition cloth; and an adjusting device, the adjusting device comprising an adjusting rod and an adjusting mechanism, one end of the torsion spring being connected to the rotating drum, the other end of the torsion spring being connected to the adjusting rod of the adjusting device, the adjusting mechanism being configured to enable the adjusting rod to rotate unidirectionally around its own axis, and the adjusting rod being configured to change a torsional deformation of the torsion spring through its own rotation.

Abstract: A retractable door sill, including: a mounting base, the mounting base including an upper fixing base and a lower fixing base; a rotating drum, the rotating drum being arranged between the tipper fixing base and the lower fixing base, a partition cloth, a torsion spring being configured to make the rotating drum rotate in one direction around its axis, the rotating drum wind up the partition cloth; and an adjusting device, the adjusting device comprising an adjusting rod and an adjusting mechanism, one end of the torsion spring being connected to the rotating drum, the other end of the torsion spring being connected to the adjusting rod of the adjusting device, the adjusting mechanism being configured to enable the adjusting rod to rotate unidirectionally around its own axis, and the adjusting rod being configured to change a torsional deformation of the torsion spring through its own rotation.

Abstract: Disclosed are a dental material with transmittance and color gradients and a method of preparing the dental material. The method includes (1) preparing at least three types of composite resin material precursor powders; (2) sequentially adding the precursor powders into a mold and performing dry pressing to obtain a preform body; alternatively, (2?) dry pressing the first type of precursor powder into a first green body, wrapping the first green body with the second type of precursor powder and then performing dry pressing to obtain a second green body, and repeating the wrapping and dry pressing operations until all types of precursor powder are dry pressed to obtain a preform body; and (3) performing hot-pressing consolidation on the preform body to obtain the desired dental material.

Abstract: A transcript of a conference (e.g., a video conference, an audio conference, or a telephone call with two or more participants) is processed to extract a conference summary. A graphical user interface is presented that enables a user to edit highlighting to select portions of a conference recording for inclusion in the conference summary. The user can edit highlighting on strings of a transcript and/or on a playback slide bar and the highlighting edits are propagated to both of these interfaces. Video clips selected for inclusion in a summary based on timestamps of strings in a transcript may be extended forward in time to incorporate a nearest I-frame of video. The short video or audio summary may be presented to users along with a text summary of the conference to enable efficient storage and transmission of information from the conference within a unified communications system.

Abstract: Disclosed are a dental material with transmittance and color gradients and a method of preparing the dental material. The method includes (1) preparing at least three types of composite resin material precursor powders; (2) sequentially adding the precursor powders into a mold and performing dry pressing to obtain a preform body; alternatively, (2?) dry pressing the first type of precursor powder into a first green body, wrapping the first green body with the second type of precursor powder and then performing dry pressing to obtain a second green body, and repeating the wrapping and dry pressing operations until all types of precursor powder are dry pressed to obtain a preform body; and (3) performing hot-pressing consolidation on the preform body to obtain the desired dental material.

Abstract: The present invention discloses a method for preparing ?-caprolactone. The method comprises the steps of: adding cyclohexanone, a co-oxidant and a certain amount of catalyst into a certain amount of organic solvent, using molecular oxygen as an oxidant, implementing a reaction with stirring for 0.1 to 24 hours under a pressure of 0.1 to 2 MPa and at a temperature of 60° C. to 100° C., wherein the co-oxidant is acrolein, and the catalyst is a carbon material. The present invention has the advantages of high-efficiency co-oxidant, easily available and recovered catalyst, environmental-friendly oxidant, simple operation and low cost.

Abstract: The examples of the present application disclose a method for preparing a dental composite resin material and articles prepared therefrom, wherein the method comprises: (1) weighing in each of raw materials, including ethylenically unsaturated monomer, reinforcing fiber, filler, initiator, polymerization inhibitor and colorant; (2) mixing the weighed raw materials except reinforcing fiber, obtaining a composite resin monomer precursor; (3) impregnating the weighed reinforcing fiber into the composite resin monomer precursor for 1-5 hours, preferably 2-3 hours, at an impregnation negative pressure of less than or equal to 0.1 MPa, obtaining a composite resin monomer precursor-immersed reinforcing fiber; and (4) subjecting the composite resin monomer precursor-immersed reinforcing fiber to a solidification treatment, obtaining the dental composite resin material.

Abstract: The present invention discloses a method for preparing ?-caprolactone. The method comprises the steps of: adding cyclohexanone, a co-oxidant and a certain amount of catalyst into a certain amount of organic solvent, using molecular oxygen as an oxidant, implementing a reaction with stirring for 0.1 to 24 hours under a pressure of 0.1 to 2 MPa and at a temperature of 60° C. to 100° C., wherein the co-oxidant is acrolein, and the catalyst is a carbon material. The present invention has the advantages of high-efficiency co-oxidant, easily available and recovered catalyst, environmental-friendly oxidant, simple operation and low cost.