Abstract: A nanoscale positioning apparatus with a large stroke and multiple degrees of freedom and a control method thereof are provided. The nanoscale positioning apparatus includes a base, a plurality of parallel branch chain mechanisms and a working table. Each of the parallel branch chain mechanisms includes an electric cylinder, a micro-motion drive mechanism, a laser interferometer, a grating measuring device, a self-locking upper hinge and a self-locking lower hinge. The top of the base is connected to one end of the electric cylinder through the self-locking lower hinge. The other end of the electric cylinder is connected to one end of the micro-motion drive mechanism. The other end of the micro-motion drive mechanism is connected to the bottom of the working table through the self-locking upper hinge. The positioning apparatus has multiple degrees of freedom, and realizes multi-degree-of-freedom arbitrary position adjustment of the working table through parallel branch chain mechanisms.

Abstract: Disclosed is a malfunction early-warning method for production logistics delivery equipment. After a sensor obtains past signal data, performing feature extraction and dimensionality reduction so as to obtain a feature vector; using a growing neural gas (GNG) algorithm to divide normal state data into different operation situations so as to obtain several cluster centers, and calculating the Euclidean distance between the feature vector and the cluster centers obtained from current operation data, so as to obtain a similarity trend; constructing a past memory matrix, using an improved particle swarm algorithm to optimize an LS-SVM regression model parameter, and calculating the residual value of the current state. Finally, combining the residual value and the similarity trend to obtain a risk coefficient, assessing the equipment state, and issuing an early warning for an equipment malfunction.

Abstract: A method for extracting and separating high-purity tetrodotoxin (TTX) from pufferfish viscera, comprising the following steps: adding an acid alcohol homogenate to pufferfish viscera, adding a certain amount of a flow aid and stirring uniformly, loading into a chromatographic column, eluting with the same acidic alcohol, collecting an eluent containing TTX, and concentrating under reduced pressure to obtain a TTX concentrated solution; further separating using ion exchange resin column chromatography, collecting an eluent containing TTX, and using a nanofiltration membrane to perform concentration or reduced pressure evaporation to dryness to obtain a TTX crude product; and precipitating and crystallising the TTX crude product by means of a solvent to obtain TTX with a purity greater than 98%.

Abstract: Disclosed are a solid preparation, and a preparation method therefor and the use thereof. The solid preparation comprises an immediate-release part and a sustained-release part, which contains active ingredients, wherein the weight ratio of the active ingredient in the sustained-release part to the active ingredient in the immediate-release part is 1:1 or higher. In particular, the solid preparation is a tofacitinib preparation.

Abstract: A nanoscale positioning apparatus with a large stroke and multiple degrees of freedom and a control method thereof are provided. The nanoscale positioning apparatus includes a base, a plurality of parallel branch chain mechanisms and a working table. Each of the parallel branch chain mechanisms includes an electric cylinder, a micro-motion drive mechanism, a laser interferometer, a grating measuring device, a self-locking upper hinge and a self-locking lower hinge. The top of the base is connected to one end of the electric cylinder through the self-locking lower hinge. The other end of the electric cylinder is connected to one end of the micro-motion drive mechanism. The other end of the micro-motion drive mechanism is connected to the bottom of the working table through the self-locking upper hinge. The positioning apparatus has multiple degrees of freedom, and realizes multi-degree-of-freedom arbitrary position adjustment of the working table through parallel branch chain mechanisms.

Abstract: A method for making a fiber containing active ingredients from a Chinese herb. The method includes subjecting a fiber material, which is to be combined with active ingredients from the Chinese herb, to be swelled with a solvent of cellulose and then to be impregnated in a solution of an extract of the Chinese herb. The fiber material is a cellulose fiber or a spunlaced nonwoven fabric made thereof. The method requires no use of adhesives. With the method, the fiber material does not need to be subjected to acidic or basic solutions or high temperature, which would cause the active ingredients to be decomposed. The method can provide a cellulose fiber or a nonwoven fabric made thereof, both of which have a higher content of active ingredients from a Chinese herb and higher durability. Furthermore, the method is simple and is easy to control, and thus, suitable for mass production.

Abstract: Disclosed is a malfunction early-warning method for production logistics delivery equipment. After a sensor obtains past signal data, performing feature extraction and dimensionality reduction so as to obtain a feature vector; using a growing neural gas (GNG) algorithm to divide normal state data into different operation situations so as to obtain several cluster centers, and calculating the Euclidean distance between the feature vector and the cluster centers obtained from current operation data, so as to obtain a similarity trend; constructing a past memory matrix, using an improved particle swarm algorithm to optimize an LS-SVM regression model parameter, and calculating the residual value of the current state. Finally, combining the residual value and the similarity trend to obtain a risk coefficient, assessing the equipment state, and issuing an early warning for an equipment malfunction.

Abstract: A two-dimensional three-degree-of-freedom micro-motion platform structure for high-precision positioning and measurement. Two series flexible hinges are connected in parallel to form a moving pair. One end of the moving pair is fixed, and driving force is applied to the other end. The driving force is amplified by means of a lever to drive the moving pair to translate and rotate. The moving pair drives a first flexible hinge of a platform to rotate, thereby driving the platform to produce corresponding displacement. Four identical moving pairs and four identical first flexible hinges respectively constitute four branch hinges which are different in arrangement; two branch hinges opposite to the platform are in central symmetry and constitute one group, and the four branch hinges are divided into two groups in total.

Abstract: A two-dimensional three-degree-of-freedom micro-motion platform structure for high-precision positioning and measurement. Two series flexible hinges are connected in parallel to form a moving pair. One end of the moving pair is fixed, and driving force is applied to the other end. The driving force is amplified by means of a lever to drive the moving pair to translate and rotate. The moving pair drives a first flexible hinge of a platform to rotate, thereby driving the platform to produce corresponding displacement. Four identical moving pairs and four identical first flexible hinges respectively constitute four branch hinges which are different in arrangement; two branch hinges opposite to the platform are in central symmetry and constitute one group, and the four branch hinges are divided into two groups in total.

Abstract: Disclosed is a method for evaluating a health status of mechanical equipment. Firstly, status data of main components on mechanical equipment are collected by a sensor, and feature extraction is performed to obtain feature parameters. Then, noise data and fault data are extracted by an outlier detection algorithm, and only the fault data are retained. Subsequently, dimension reduction processing is performed to obtain a feature vector for final evaluation. Finally, equipment status evaluation is performed, a self-organizing map neural network model is established by health status data and failure status data, rate impact factors of each group of data to be evaluated are calculated by an entropy weight theory, and the rate impact factors are introduced into a neural network to perform health factor calculation. The present invention implements overall status evaluation for mechanical equipment, provides a basis for health maintenance of the mechanical equipment, and avoids unnecessary economic losses.

Abstract: The present invention relates to a medical ceiling pendant, an apparatus and a method for overall packaging the medical ceiling pendant, wherein the rotary structure of the medical ceiling pendant is hinged to a gas and electric supply box, a second H-shaped bracket and a U-shaped bracket are plugged onto a pallet, and a third H-shaped bracket is mounted onto the U-shaped bracket; one end of the gas and electric supply box is abutted to the pallet, the other end of the gas and electric supply box is lapped onto the second H-shaped bracket, and one end of the rotary structure is lapped onto the third H-shaped bracket; the first H-shaped bracket is plugged onto the pallet, and the other end of the rotary structure is lapped onto the first H-shaped bracket; a protective peripheral board is provided on the pallet from top to bottom, then the outside of the protective peripheral board is provided with a reinforcing peripheral board, finally a cover board is connected to the upper end of the reinforcing peripheral

Abstract: The present invention relates to a medical ceiling pendant, an apparatus and a method for overall packaging the medical ceiling pendant, wherein the rotary structure of the medical ceiling pendant is hinged to a gas and electric supply box, a second H-shaped bracket and a U-shaped bracket are plugged onto a pallet, and a third H-shaped bracket is mounted onto the U-shaped bracket; one end of the gas and electric supply box is abutted to the pallet, the other end of the gas and electric supply box is lapped onto the second H-shaped bracket, and one end of the rotary structure is lapped onto the third H-shaped bracket; the first H-shaped bracket is plugged onto the pallet, and the other end of the rotary structure is lapped onto the first H-shaped bracket; a protective peripheral board is provided on the pallet from top to bottom, then the outside of the protective peripheral board is provided with a reinforcing peripheral board, finally a cover board is connected to the upper end of the reinforcing peripheral

Abstract: A monitor mounting system is provided. The monitor mounting system includes a supporting structure configured to be mounted at a location and to support the system and a frame formed by two first bars and two second bars. The monitor mounting system also includes a side bar with a sliding groove with a mounting member attached therein, wherein the mounting member slides along the sliding groove and attaches a monitor to the side bar. The monitor mounting system further includes a first attaching member configured to attach the side bar to the supporting structure.

Abstract: A transplanar liquid transport tester for fabrics, comprising a liquid reservoir; a liquid-permeable support member having a first surface for supporting a fabric test sample, and a second surface for interfacing with liquid in the liquid reservoir; and means for maintaining a constant hydrostatic pressure in the liquid reservoir at the second surface of the support member for replenishing liquid through the support member to the first surface during testing.

Abstract: A transplanar liquid transport tester for fabrics, comprising: a liquid reservoir; a liquid-permeable support member having a first surface for supporting a fabric test sample, and a second surface for interfacing with liquid in the liquid reservoir; and means for maintaining a constant hydrostatic pressure in the liquid reservoir at the second surface of the support member for replenishing liquid through the support member to the first surface during testing.

Abstract: A mannequin has an artificial skeleton defining a torso area covered with a resilient outer shell shaped to simulate a human torso. The outer shell defines a chest region and a pelvic region. An adaptor located at the chest region, and an artificial breast is detachably connected to the adaptor.