Abstract: A ureteral stent and a manufacturing method of a ureteral stent are applied to the technical field of medical instruments, to effectively reduce ureteral stent failure in fluid guiding. The ureteral stent comprises an inner structure (200), and an outer structure (100) sleeved on the inner structure (200), wherein the outer structure (100) is a tube-shaped structure, and the outer structure (100) is made from a first wire (110). The ureteral stent can effectively reduce ureteral stent failure in fluid guiding.

Abstract: A resource processing method and apparatus. The method is achieved by a computer configured to execute the following steps: generating a resource allocation chart based on a resource allocation request; processing the resource allocation chart and generating an access entrance of the resource allocation chart; opening the access entrance to enable at least one third party resource supplier to respond to the resource allocation request via the access entrance. The method further comprises: when the resources are not available or not suitable for allocation, receiving a resource allocation chart, wherein the resource allocation chart is based on the resource allocation request; generating an access entrance of the resource allocation chart; opening the access entrance to at least one third party resource supplier; and receiving the allocated resources from the at least one third party resource supplier by responding to the resource allocation request through the access entrance.

Abstract: Provided are an HPV chimeric protein and a use thereof. The HPV chimeric protein of the present invention comprises an HPV58 L1 protein or a mutant thereof and a polypeptide derived from a HPV16 L2 protein and inserted into a surface region of the HPV58 L1 protein or the mutant thereof, or consists of the polypeptide, wherein an amino acid sequence of the HPV58 L1 protein is as shown in SEQ ID No. 1 and an amino acid sequence of the HPV16 L2 protein is as shown in SEQ ID No. 2.

Abstract: The present application relates to a modified human papillomavirus (HPV) type 52 L1 protein and a use thereof. Specifically, the present application relates to a HPV type 52 L1 protein, a nucleotide encoded thereby, a carrier comprising the nucleotide, a cell comprising the carrier, a pentamer or virus-like particle consisting of the HPV-52 L1 protein, a vaccine comprising the pentamer or virus-like particle and a vaccine adjuvant, and a use thereof in the prevention of HPV infections and HPV infection-related diseases.

Abstract: The present invention discloses a three-dimensional modeling method for thermal runaway of a lithium-ion battery under different state of charge (SOC) conditions based on a differential scanning calorimeter (DSC) experiment, comprising S1: obtaining an active material of a battery, and performing a DSC experiment to obtain a heat flow curve; S2: dividing the heat flow curve of the battery into a plurality of reaction peaks to obtain a reaction enthalpy of each peak of the battery; S3: analyzing the heat flow curve by utilizing a Kissinger equation to obtain activation energy and a pre-exponential factor; S4: fitting the heat flow curve of the material of the battery by using a genetic algorithm to obtain a reaction order of the active material of the lithium-ion battery; S5: establishing a thermal runaway model of the battery, and comparing simulation experimental results to verify the feasibility of the model; and S6: changing the SOC of the lithium-ion battery, and studying the influence of different SOC on

Abstract: The present disclosure discloses a phase-change flame-retardant fiber material for thermal management of a lithium ion battery in a closed space and a preparation method. The phase-change flame-retardant fiber material is prepared in a coaxial electrostatic spinning manner and includes a composite phase-change fiber material PASA-TPU at a core part and a flame-retardant fiber material TB-PAN wrapping a surface of the core part. The composite phase-change fiber material is well wrapped with the flame-retardant fiber material, and the lithium ion battery wrapping the whole phase-change flame-retardant fiber material in the closed space is subjected to charge-discharge cycle; the result shows that the surface temperature of the battery can be effectively reduced by about 20° C.

Abstract: The present application discloses a nanocomposite flame retardant. The nanocomposite flame retardant includes 9.7-9.8 wt % of MXene nanosheets, 72.7-76.5 wt % of bimetallic hydroxide and 13.8-17.5 wt % of cuprous oxide particles. The present disclosure further discloses flame-retardant bismaleimide resin added with the nanocomposite flame retardant and a preparation method of the flame-retardant bismaleimide resin. According to the present disclosure, the flame retardant is prepared from magnesium and aluminum elements, so the production cost of the flame retardant is reduced; and meanwhile, the particle size of the cuprous oxide particles is reduced, the specific surface area of cuprous oxide is increased, the catalytic efficiency of the cuprous oxide per unit mass can be improved, and then the flame-retardant and toxicity-reducing effects of products are improved.

Abstract: A vertebral end plate processing device includes a handle, a vertical opening mechanism, a horizontal expansion mechanism and a processing mechanism. When the processing device is in a non-working state, the vertical opening mechanism and the horizontal expansion mechanism maintain a contracted state, and a processing portion is located within a vertical space between opening members. When the processing device is in a working state, the opening members of the vertical opening mechanism are in contact with a bone surface of a vertebral body and vertically open same. An arc-shaped expansion block of the horizontal expansion mechanism drives a conveying member for horizontal expansion so that the processing portion is horizontally removed from the vertical space of the opening members and is in contact with the bone surface of the vertebral body. A control portion controls the conveying member to move.

Abstract: Disclosed is a method for predicting corrosion and spontaneous combustion of sulfur-related petrochemical equipment. The method solves the issues in the existing techniques that includes narrow predicting range, high workload in installation and maintenance, and time lag in predicting corrosion and spontaneous combustion inside equipment. The method comprises a step of a dual index system prediction, which includes a step of monitoring a temperature and a step of detecting SO2 gas generated by spontaneous combustion. The time when spontaneous combustion occurs can be accurately calculated by using a fitted quantitative relationship formula generated by the spontaneous combustion of corrosion products. The method has a low Labor cost. The method has a low labor cost and, does not require on-site gas detection to be carried out by means of manual detection, which both reduces the cost and ensures the detection accuracy.

Abstract: A heat management safety enhanced vehicle battery pack based on nested lithium ion batteries includes an insulating housing. K insulating positioning and connecting plates are arranged in the insulating housing along a vertical direction. The positioning and connecting plate on each layer includes the batteries in M rows and N columns to form battery pack units. All the battery pack units perform output alone or perform output after being connected in series or in parallel to form a battery pack. Each battery includes a metal shell and a cell filled in the shell. The shell includes an inner cylinder and an outer cylinder. The inner cylinder is located in a through hole in the center of the outer cylinder. A gap is formed between a side wall of the inner cylinder and a secondary outer wall of the outer cylinder. The cell includes an outer cell and an inner cell.

Abstract: A nested structure lithium ion battery capable of reducing a risk of thermal runaway includes a metal housing and a battery cell filled in the housing. The housing includes an inner cylinder and an outer cylinder. The inner cylinder is located in a through hole in the center of the outer cylinder, and there is a gap between a side wall of the inner cylinder and a secondary outer wall of the outer cylinder. The battery cell includes an outer battery cell and an inner battery cell. The outer battery cell is filled in a cavity of the outer cylinder, and the inner battery cell is filled in a cavity of the inner cylinder. This nested structure lithium ion battery divides the battery cell into two parts. The gap is used as a heat dissipation channel in a high temperature environment.

Abstract: The present invention discloses a testing method and a testing system for a safe operating window of a lithium-ion battery in a squeezed state. The testing system includes a mechanical loading device, a heating device, a lithium-ion battery tester and a measuring device. By comparing the influence of a combined use of two or more of mechanical abuse with two different fixed variables, thermal abuse, and electrical abuse on critical conditions of thermal runaway of the lithium-ion battery, the influence of the different forms of abuse on the critical conditions of thermal runaway of the lithium-ion battery can be compared qualitatively and quantitatively, and these data can also be used to determine the safe operating windows of the lithium-ion battery under different abuse conditions.

Abstract: A high-concentration anaerobic fermentation apparatus includes a liquid accumulation tank, a fermentation vessel, a feeding assembly, and a biogas residue collecting bin. The feeding assembly includes a hopper and a return conveyor belt including a first portion extending downward from the hopper till below a liquid level, a second portion extending upward from a bottom end of the first portion till above the liquid level, a third portion extending downward from a top end of the second portion till the liquid level, and a fourth portion extending upward from a bottom end of the third portion till out of the liquid level and above the biogas residue collecting bin. A pressure-feed flange is disposed at an outer side of the fermentation vessel, a feed channel is formed between the pressure-feed flange and the first portion, and a discharge channel is formed between the pressure-feed flange and the fourth portion.

Abstract: The present invention discloses a testing method and a testing system for a safe operating window of a lithium-ion battery in a squeezed state. The testing system includes a mechanical loading device, a heating device, a lithium-ion battery tester and a measuring device. By comparing the influence of a combined use of two or more of mechanical abuse with two different fixed variables, thermal abuse, and electrical abuse on critical conditions of thermal runaway of the lithium-ion battery, the influence of the different forms of abuse on the critical conditions of thermal runaway of the lithium-ion battery can be compared qualitatively and quantitatively, and these data can also be used to determine the safe operating windows of the lithium-ion battery under different abuse conditions.

Abstract: A system and method for early-warning and positioning of overheating in a lithium ion battery pack is disclosed, especially for a single battery in the lithium ion battery pack during use. The system Includes a sensor unit, a controller unit, an alarm unit and an auxiliary unit; the sensor unit includes a special flexible thin film sensor; the controller unit includes a single chip microprocessor, an alarm controller, a computer and a display, the single chip microprocessor and the alarm controller being connected to the computer, the computer being connected to the display; the alarm unit includes a LED alarm light and a buzzer; the single chip microprocessor of the controller unit is connected to the flexible film sensor; the auxiliary unit includes a power supply and a constant value resistor; the power supply provides power separately to the controller unit and the alarm unit, and the constant value resistor is directly connected to the power supply.

Abstract: A vertebral end plate processing device includes a handle, a vertical opening mechanism, a horizontal expansion mechanism and a processing mechanism. When the processing device is in a non-working state, the vertical opening mechanism and the horizontal expansion mechanism maintain a contracted state, and a processing portion is located within a vertical space between opening members. When the processing device is in a working state, the opening members of the vertical opening mechanism are in contact with a bone surface of a vertebral body and vertically open same. An arc-shaped expansion block of the horizontal expansion mechanism drives a conveying member for horizontal expansion so that the processing portion is horizontally removed from the vertical space of the opening members and is in contact with the bone surface of the vertebral body. A control portion controls the conveying member to move.

Abstract: The disclosure provides a pipeline leak detection device and a leak detection method based on the variational mode decomposition optimized by the particle swarm (PSO-VMD). The acoustic emission signals with leakage and without leakage are collected by the acoustic emission system. Since the decomposition result of the traditional VMD depends on the selection of the parameter preset scale K and the penalty coefficient ?, the PSO is employed to obtain the optimal parameters of the VMD. The optimized parameters are input into VMD to decompose the original signals, and then K intrinsic mode functions (IMFs) can be obtained. After the signal reconstruction for de-noising, based on the energy ratio, the time-domain features are extracted and the support vector machine (SVM) is used to detect the leak.

Abstract: Provided is a papillomavirus chimeric protein, the skeleton thereof being a papillomavirus L1 protein or a mutant thereof, at least one human papillomavirus 33-type L2 protein or mutant polypeptide thereof being embedded on the skeleton. The present papillomavirus chimeric protein can be used for preparing a vaccine for preventing papillomavirus infections and infection induced disease.

Abstract: Disclosed is a method for predicting corrosion and spontaneous combustion of sulfur-related petrochemical equipment. The method solves the issues in the existing techniques that includes narrow predicting range, high workload in installation and maintenance, and time lag in predicting corrosion and spontaneous combustion inside equipment. The method comprises a step of a dual index system prediction, which includes a step of monitoring a temperature and a step of detecting SO2 gas generated by spontaneous combustion. The time when spontaneous combustion occurs can be accurately calculated by using a fitted quantitative relationship formula generated by the spontaneous combustion of corrosion products. The method has a low Labor cost. The method has a low labor cost and, does not require on-site gas detection to be carried out by means of manual detection, which both reduces the cost and ensures the detection accuracy.

Abstract: An integrated eliminating device and its method for initial runoff pollution is provided, wherein a plurality of the water receiving pipes for collecting initial runoff are gathered and connected to the first water reservoir, one end of the water inlet pump is connected with the first water reservoir via the water receiving pipes, and the other end of the intake pump is connected with an water inlet opening of the rice field; the rice field is divided into a plurality of sub-parcels in a shape of long stripes, a regulating gate is set. An outlet of the rice field is communicated with the second water reservoir and which is communicated with the water inlet opening of the rice field via the reflux pump.