Abstract: A device for on-site detection of soil organic matter, including a pre-processing module, a centrifugal system, a microfluidic chip, and a photoelectric detection module. The pre-processing module is configured to process a soil sample into a soil solution. The centrifugal system is configured to generate a centrifugal force. The microfluidic chip is configured to allow mixing of the soil solution and an extraction solvent for extraction under the centrifugal force to obtain an extract. The photoelectric detection module is configured to detect the extract to determine organic matter content in the soil solution. An on-site detection method and a microfluidic chip are also provided. The microfluidic chip includes a channel layer, a cover layer arranged above the channel layer, and a base plate layer arranged below the channel layer.

Abstract: A sampling device and method for evaluating ecological risk of soil in a high geological background area comprises an impact sampling mechanism, a soil layer stripping mechanism and an auxiliary support frame. The impact sampling mechanism comprises a sampling hopper with a downward opening. A connecting sliding rod is fixedly arranged on the top of the sampling hopper. An upper end of the connecting sliding rod is connected with an impact rod. The impact rod is internally provided with an impact hammer capable of reciprocating along an axis of the impact rod. The soil layer stripping mechanism comprises a stripping sliding cylinder in sliding fit with the connecting sliding rod, and a support disc. A plurality of stripping plates are connected to a lower side edge of the support disc in a sliding fit mode.

Abstract: Disclosed are a target LED chip with a reflective layer and a manufacturing method. The method comprises providing a target substrate to a bottom of an initial LED chip, to obtain a first LED chip; depositing a first target liquid onto a top surface of the first LED chip to form a target protective layer, so as to obtain a second LED chip; etching the second LED chip from the target protective layer, to obtain a third LED chip; treating the third LED chip according to a first target method to form reflective layers, so as to obtain a fourth LED chip; and removing top reflective layers, second side wall reflective layers and first sub-protective layers of the plurality of second LED sub-units, to obtain the target LED chip comprising the plurality of target LED sub-units and the target substrate.

Abstract: A device for detecting soil nutrients on site, including an extracting grid, an on-site real-time detection assembly and a transfer assembly for transferring a soil extract from the extracting grid to the on-site real-time detection assembly. A soil nutrient detection method using the device and a microfluidic chip are also provided. The microfluidic chip includes a cover plate and a base plate. The base plate includes a soil extract feeding groove, a quantitative feeding groove, a reagent storage groove, and a serpentine groove.

Abstract: A sampling device and method for evaluating ecological risk of soil in a high geological background area comprises an impact sampling mechanism, a soil layer stripping mechanism and an auxiliary support frame. The impact sampling mechanism comprises a sampling hopper with a downward opening. A connecting sliding rod is fixedly arranged on the top of the sampling hopper. An upper end of the connecting sliding rod is connected with an impact rod. The impact rod is internally provided with an impact hammer capable of reciprocating along an axis of the impact rod. The soil layer stripping mechanism comprises a stripping sliding cylinder in sliding fit with the connecting sliding rod, and a support disc. A plurality of stripping plates are connected to a lower side edge of the support disc in a sliding fit mode.

Abstract: A packing device for an adsorption device is disclosed. The packing device includes a heating support frame, a packing layer support and a plurality of packing cells. The packing layer support is horizontally extended and arranged in a length direction of the heating support frame, and grooves are alternately provided on both sides of the packing layer support. A clamping slot corresponding to each groove is provided on one side of each packing cell, the packing cell is clamped to the packing layer support through the clamping slot, and one side of the packing cell is in contact with an inner wall of the heating support frame.

Abstract: A packing device for an adsorption device is disclosed. The packing device includes a heating support frame, a packing layer support and a plurality of packing cells. The packing layer support is horizontally extended and arranged in a length direction of the heating support frame, and grooves are alternately provided on both sides of the packing layer support. A clamping slot corresponding to each groove is provided on one side of each packing cell, the packing cell is clamped to the packing layer support through the clamping slot, and one side of the packing cell is in contact with an inner wall of the heating support frame.

Abstract: A support frame apparatus for a thermal fluid includes: a support frame adapted to be coupled to an inner wall of an adsorption device, and defining a chamber therein, a first channel for accommodating the thermal fluid being formed in a wall of the support frame, and a plurality of first holes being formed in the wall of the support frame and being opened to the chamber to spray the thermal fluid into the chamber; and a plurality of support arms disposed within the chamber and each having a first end coupled to the support frame and a second end extended inwardly from the support frame, the support arm defining a second channel therein fluid communicated to the first channel, and the support arm having a plurality of second holes communicated to the second channel and opened to the chamber to spray the thermal fluid into the chamber.

Abstract: A variable camshaft timing system including a first camshaft phaser having an input that is configured to receive rotational force from a crankshaft and an output that is configured to link with a first camshaft of a concentric camshaft assembly to change the angular position of the first camshaft relative to a crankshaft; and a second camshaft phaser having an output that is configured to link with a second camshaft of the concentric camshaft assembly to change the angular position of the second camshaft relative to the crankshaft, wherein the first camshaft is concentrically positioned to the first camshaft and the first camshaft phaser is mechanically linked to the second camshaft phaser to communicate rotational force from the crankshaft to the second camshaft phaser through the first camshaft phaser and the mechanical link.

Abstract: A variable camshaft timing system including a first camshaft phaser having an input that is configured to receive rotational force from a crankshaft and an output that is configured to link with a first camshaft of a concentric camshaft assembly to change the angular position of the first camshaft relative to a crankshaft; and a second camshaft phaser having an output that is configured to link with a second camshaft of the concentric camshaft assembly to change the angular position of the second camshaft relative to the crankshaft, wherein the first camshaft is concentrically positioned to the first camshaft and the first camshaft phaser is mechanically linked to the second camshaft phaser to communicate rotational force from the crankshaft to the second camshaft phaser through the first camshaft phaser and the mechanical link.

Abstract: The invention provides a method of applying rat tail collagen in the field of cosmetics. Compared with the conventional collagen on the market currently, in addition to having the characteristics of general collagen, the rat tail collagen still has the advantages of a stable triple helix structure, high collagen activity, low immunogenicity, controllable quality of the source and high biological safety, so radiation sterilization which lowers the biological activity of the collagen may not be needed. As determined from the experiment, the rat tail collagen prepared by the technical solution provided by the present invention has the properties of whitening skin, inhibiting melanin synthesis, resisting oxidation and allergy, repairing hormone skin and removing acne. The method provided by the present invention also overcomes the technical drawbacks that the collagen-contained cosmetics usually have.

Abstract: The present invention relates to the preparation and use of a cell cryopreservation formulation convenient for clinical use. In particular, provided is a cell cryopreservation (freezing) formulation, comprising: (1) a cell; (2) a cryopreservation diluent; the cryopreservation diluent comprising: an aqueous solution of sodium chloride, protective proteins, and dimethyl sulfoxide. The invention also relates to a corresponding cell resuscitation method. The invention adopts a no-wash cryopreservation solution for preparation of a cell frozen preparation, and the cell resuscitation and dilution for clinical use can be carried out by a simple formulating operation.

Abstract: A mixed reality system and method for determining spatial positions of dental instruments without having a fixed intra oral reference point is disclosed. An intra-oral image sensor-based positioning device including at least two cameras is provided to sense and track the movements of dental instruments being used. The three-dimensional coordinates relating to the movement and orientation of the dental instruments are obtained for real time or delayed use in a mixed reality environment.

Abstract: A BM23 peptide is obtained by mutating and modifying BMP-2. The BM23 peptide improves stability and duration of in-vivo efficacy relative to BMP-2, has an activity of promoting the differentiation of bone marrow mesenchymal stem cells into chondrocytes and promoting the proliferation of chondrocytes and can be used for repairing cartilage and/or treating osteoarthritis.

Abstract: A BM23 peptide is obtained by mutating and modifying BMP-2. The BM23 peptide improves stability and duration of in-vivo efficacy relative to BMP-2, has an activity of promoting the differentiation of bone marrow mesenchymal stem cells into chondrocytes and promoting the proliferation of chondrocytes and can be used for repairing cartilage and/or treating osteoarthritis.

Abstract: A variable camshaft timing system including a first camshaft phaser having an input that is configured to receive rotational force from a crankshaft and an output that is configured to link with a first camshaft of a concentric camshaft assembly to change the angular position of the first camshaft relative to a crankshaft; and a second camshaft phaser having an output that is configured to link with a second camshaft of the concentric camshaft assembly to change the angular position of the second camshaft relative to the crankshaft, wherein the first camshaft is concentrically positioned to the first camshaft and the first camshaft phaser is mechanically linked to the second camshaft phaser to communicate rotational force from the crankshaft to the second camshaft phaser through the first camshaft phaser and the mechanical link.

Abstract: A maxillary tuberosity holding bite block is disclosed. The maxillary tuberosity holding bite block includes a curved tail that embraces a patient's maxillary tuberosity, which allows the bite block to hold the patient's jaws in a stable position, regardless of whether or not the patient has edentulous jaws. Moreover, the maxillary tuberosity holding bite block may serve as a carrier for sensors and endoscopes so it may serve as an intra-oral sensor-based positioning and navigation device that sense and track the movement and position of sensor-equipped surgical instruments.