33 results about "Simulated weightlessness" patented technology

The invention discloses a tail-suspended rat fixing device, which comprises a rat fixing box, a tail suspension device and an angle adjusting device. The invention also provides a tail-suspended rat vibration/motion training device, which comprises a motion track limit device, a vibration training device, an active motion training device, a passive motion training device, a rat hind limb fixing device and a height adjusting device. The invention also provides a vibration/motion control device, which comprises a display screen, a key, a direct-current motor speed adjusting knob, a power supply adapter, a switch, a USB interface and an internal circuit, wherein the direct-current motor speed adjusting knob is used for adjusting the rotating speed of a direct-current motor during passive motion training; the power supply adapter and the switch are used for supplying power for the whole device; the USB interface is used for carrying out function expansion later; and the internal circuit is used for controlling and quantifying rat vibration/motion training and supplying power. The device can keep the same tail-suspended height, can carry out equal-length and equal-tension motion by combining vibration and motion training, and simultaneously achieves training quantification and control.

The invention provides a tail-suspended rat fixing device which comprises a tail suspension device, a rat fixing box for storing the head and body of a rat, a body fixing device for fixing the body of a rat, an angle control device for controlling the included angle between the rat fixing box and a pedestal of the tail-suspended rat fixing device. The invention also provides a tail-suspended rat active/passive motion training device which comprises a rat hind limb motion device for training active/passive motion of the hind limb of a rat and further comprises a motion orbit control device for limiting the motion range of the hind limb of a rat, an active motion training device for training the active motion of the hind limb of a rat, and a passive motion training device for training the passive motion of the hind limb of a rat. The invention realizes the motion training and simultaneously keeps the tail suspension angle unchanged, that is, keeps the rat in a simulated weightlessness state.

The invention provides an intelligentized display device of a simulated rat in a simulated weightlessness condition and belongs to the technical field of devices for the display of experiments. The intelligentized display device is particularly suitable for display equipment for the study of a simulated weightless experiment of the rat, developed in the field of aerospace medicine, and is characterized in that: the intelligentized display device is used for displaying a simulation principle and method of a weightless environment and the movement means of the rat in the weightless environment through wrapping silica gel and a mechanical structure by rat fur and hair and controlling a rat specimen by an intelligent controller. The intelligentized display device has the characteristics of having a plurality of integrated functions such as simulation, environmental protection, intelligentization and the like, and provides intuitional demonstration equipment for a typical animal model for the simulation of a microgravity environment in the outer space.

The invention relates to an animal simulated weightlessness training device which comprises a shell, a transmission shaft, a fixing portion and animal fixing clothes. The two ends of the shell are provided with openings, the upper end opening of the shell is provided with an annular rail, and the lower end of the shell is connected with a base; the transmission shaft is fixed to the center of the inside of the shell through the base; the fixing portion comprises a fixing ring and a fixing arm, the fixing ring can move circumferentially along the annular rail at the upper end of the shell through a transmission device embedded in the fixing ring, one end of the fixing arm is fixed to the fixing ring, and the other end of the fixing arm is fixed to one end of the transmission shaft; the animal fixing clothes are fixedly connected with the fixing portion and enable an experiment animal to lie on the side and be fixed. According to the animal simulated weightlessness training device, the experiment animal wears the clothes, lies on the side and is fixed, so that the four limbs of the experiment animal are suspended and can not bear loads fully, simulated weightlessness training is carried out on the experiment animal, especially on muscle-bone systems of the four limbs, and the novel animal simulated weightlessness training device is used for simulated weightlessness research.

The invention provides a novel flexible cable rigidity measuring method and system. The method comprises the steps that: a weightless environment is simulated; in the weightless environment, a motioncabin is continuously excited through a non-contact actuating mechanism; a motion monitoring system is established, and the rotation angle and displacement of the motion cabin relative to a fixed cabin are measured; the kinetic model of the motion cabin is established, and periodic excitation kinetic information is outputted; periodic excitation motion information is separated from non-periodic excitation motion information in measurement information according to a motion separation algorithm; a stability controller is established, and it is guaranteed that the motion cabin does not collide with the fixed cabin during movement; a non-contact actuator force and torque distribution model is established, and steady-state control force, torque and periodic excitation are outputted to the motion cabin; and the force and moment of the cable end of the fixed cabin are collected, and a flexible cable rigidity coefficient matrix is obtained through calculation according to a spring model. According to the method and system of the invention, a reference basis and a calculation model are provided for subsequent selection and interference analysis of the inter-cabin cable of a double-super satellite model.

The invention provides a multi-cell co-culture apparatus used for research of simulated weightlessness. The apparatus comprises a culture bottle body, a culture bottle spiral cover, a semi-permeable membrane, a retaining piece and a cross-shaped support, wherein, the semi-permeable membrane, the retaining piece and the cross-shaped support are used for culturing cells and the culture bottle body,and the culture bottle spiral cover compose a multi-cell co-culture bottle and enable butt joint between the multi-cell co-culture apparatus and a cell simulated weightless device to be realized. Theapparatus can be used for culture of a single kind of cells in a simulated weightless environment and for co-culture of two or more kinds of cells in a simulated weightless environment, fully takes influence of contact among cells and cell communication into consideration, can maximumly meet requirements for multi-cell co-culture in a simulated weightless environment, enables the disadvantage that conventional simulated weightless devices can only culture a single kind of cells to be overcome and is simple to operate and repeatedly usable.

The invention relates to a rat simulation weightless treadmill training method and a rat simulation weightless treadmill. The rat simulation weightless treadmill training method comprises steps of setting a rat treadmill and enabling an acute angle to be formed between the treadmill and the horizontal plane; arranging a baffle board at one turnup end of the treadmill and enabling the baffle board to extend out of a fixed pulley support; remaining a through hole in the baffle board; placing the rat on the treadmill with the tail orienting to one end of the baffle board, fixing one end of an insulated connection part to the tail of the rat and enabling a load bearing part to be fixed at the other end of the insulated connection part after the other end penetrating the through hole of the baffle board and straddling on a groove of a fixed pulley. The rat simulation weightless treadmill training method can satisfy manned space flight special scientific research requirements and enables the space zero gravity environment to be simulated in the ground.

The invention discloses a weightlessness simulation system based on an air cylinder and an air floatation cushion, which comprises a bottom plate, a hinge mounting mechanism, a vibration excitation mechanism and an air floatation mechanism, and is characterized in that the hinge mounting mechanism, the air floatation mechanism and the vibration excitation mechanism are sequentially mounted on the bottom plate along a straight line; the hinge mounting mechanism is used for fixing a hinge to be tested, the hinge mounting mechanism comprises the hinge to be tested, a driving adapter plate, a hinge mounting seat, a hinge mounting seat supporting block, a light rigid rod and a balancing weight, and the vibration excitation mechanism comprises a force sensor flange, a force sensor, a vibration excitation rod, a vibration exciter, a vibration exciter mounting seat and a vibration exciter mounting seat supporting block. The air floating mechanism comprises an air floating cushion, an air floating platform, a piston rod, a piston, an air cylinder upper end cover, an air cylinder lower end cover, an air cylinder wall, a limiting rod and an air floating mechanism base, the air floating device is used for simulating a weightless environment, the influence of friction force is reduced, and the test result is more accurate.

The invention relates to the technical field of bioengineering, in particular to a crop cultivation generation-adding breeding device under a simulated weightlessness condition, which comprises a cultivation box and a track, the cultivation box is detachably arranged on the track, and the cultivation box can move along the track; the track is placed in the vertical direction and is annular, the track comprises an ascending area and a descending area, the cultivation box is in an ascending state in the ascending area, and the cultivation box is in a descending state in the descending area; seeds are placed in the cultivation box, and when the cultivation box moves to the descending area along the track, the seeds are in a weightlessness state. Through operation of the cultivation box on the track, a weightlessness state can be simulated to process seeds so as to simulate space seedling and breeding, the device is simple in structure and convenient to operate, and breeding cost can be reduced, so that space breeding is popularized and developed.

The invention belongs to the technical field of animal model preparation, and particularly relates to preparation method of a spaceflight depression syndrome animal model. The method comprises the steps of S1, spaceflight depression syndrome model molding, namely adopting closed isolated culture, simulated weightlessness, noise and circadian rhythms to verify the condition of accepting simulated spaceflight stress stimulation of adult SD male rats; and S2, spaceflight depression syndrome model behavioristics evaluation, namely detecting a depression syndrome state condition through a sweet water preference experiment, an open field experiment, a Morris water maze experiment, a step-down experiment and a forced swimming experiment. According to the simulated weightlessness manner, a Chen Jie improved tail crane is adopted, and an angle of 30 degrees is formed between the body and the horizontal plane; for day and night rhythm change, day and night alternation of space flight in 90 minutes in a light and shade period is simulated through light control; and for the step-down experiment, an electrified copper grid is laid at the bottom of a reaction box, animals are shocked by electricshock, and for a normal reaction, the animals jump onto an insulating platform in the box to avoid harmful stimulation. Through model establishment, the influence of different conditions on the depression syndrome of an astronaut is studied.

A testing machine for simulating the friction moment of a spaceflight bearing under zero gravity mainly comprises an upper cover, a lower cover, a stand column, guide rods, supporting rods, a motor support, a motor, a coupler, a shaft, a bearing cap, an adjusting spacer, an elastic coil, a deep groove ball bearing, an angular contact bearing, a bearing bush A, an upper press sleeve, a bearing bush B, a thrust ball bearing, a sliding sleeve, a moving plate, a manual lifting platform, a lower cover vertical plate, a positioning plate, an electromagnet, a torque sensor, a flat key A, a hollow shaft, a flat key B, a level supporting rod, a sliding block, a flat key C, a guide flat key, an upper cover vertical plate, a bearing pedestal, a feeler gauge spacer, a support, a lever, a cylinder pin, a steel wire, a tray and weights.Compared with other tests for simulating zero weight, according to the testing machine, the established zero gravity time is long, the development cycle is short, and cost is very low.

The invention discloses a device for simulating weightlessness environment based on a nitrogen spring and an air floating cushion, which comprises a bottom plate, a hinge fixing mechanism, a space hinge, a balancing weight, an air floatation supporting mechanism and a vibration excitation device, the hinge fixing mechanism, the air floatation supporting mechanism and the vibration excitation device are sequentially mounted on the bottom plate, one end of the space hinge is connected with the hinge fixing mechanism, the other end of the space hinge is connected to one side face of the balancing weight, the other side face of the balancing weight is connected with a vibration excitation rod of the vibration excitation device, and the balancing weight is arranged on the air floatation supporting mechanism and forms air floatation supporting on the balancing weight through the air floatation supporting mechanism. The device is used for measuring the dynamic stiffness, so that the inherent characteristics of the rubber rope can influence the accuracy of a test result, and the air flotation device is used for reducing the influence of the outside on the dynamic stiffness of the hinge.

The invention discloses an application of panax quinquefolius stem and leaf total saponins in preparation of a composition for resisting bone loss. The beneficial effects of the invention are as follows: according to the application of the panax quinquefolius stem and leaf total saponins in preparation of the composition for resisting bone loss, simulation experiments show that the panax quinquefolius stem and leaf total saponins can relieve mouse bone loss caused by simulated weightlessness, that is, it shows that the panax quinquefolius stem and leaf total saponins can effectively resist bone loss caused by special environments such as spaceflight.

The invention relates to a video generation method and device and a storage medium. The method comprises the following steps: determining an initial speed and an initial position of a fluid in a weightless state; when an external force is applied to the fluid, determining the external force applied to each particle in the fluid; then determining a predicted position of each particle in each frame in a preset time period; constructing a density constraint equation of each frame of each particle based on the predicted position of each frame of each particle; obtaining a plurality of video frames of the fluid based on the density constraint equation of each particle and each frame; and obtaining the video in the preset time period. The authenticity of fluid vibration, merging and splitting states under the simulated weightlessness condition is improved.

The invention discloses application of hydrogen in preparation of a composition for preventing or treating oxidative stress injury of a brain. The oxidative stress injury of the brain is caused by anaerospace environment. The beneficial effects of the application are as follows: the invention provides application of the hydrogen in preparation of a composition for preventing or treating oxidativestress injury of the brain in a special aerospace environment. Simulation experiments show that hydrogen can reduce rat brain oxidative stress injury caused by simulated weightlessness, that is, it shows that hydrogen can effectively resist brain oxidative stress injury caused by aerospace and other special environments.

The invention discloses a liquid changing device for multi-cell co-culture simulation weightlessness experiment. The liquid changing device comprises a gear, a gear rod, a spring pull wire, a spring,a piston, a second transmission mechanism and a second power unit; wherein the second transmission mechanism is used for driving the pistons in two liquid changing devices to move synchronously; the second power unit is used for providing power for rotation of the second transmission mechanism and the gear; the gear is connected with the gear rod; the pistons are arranged in an inner cavity of a cell culture device needing liquid replacement; one end of the spring is pressed against the piston, and the other end of the spring is fixed in the inner cavity of the cell culture device needing liquid replacement; one end of the spring pull wire is wound on the gear rod, and the other end is connected with the piston after passing through the spring. The problem of circulation of a culture solution and cell secreta during co-culture of cells growing in different environments and the problem that rotary simulated weightlessness is difficult to carry out for a long time due to nutrient consumption of a culture medium and accumulation of cell excretion wastes in a rotary simulated weightlessness experiment are solved.

The invention discloses a gosling screening method in a goose breeding process, relates to a waterfowl breeding technology, and aims to solve the problem of breeding resource waste caused by low gosling screening efficiency and poor screening accuracy in the current goose breeding process. According to the multi-stage progressive gosling screening method, the weightlessness and overweight states are simulated through early intervention, then the corresponding response of goslings is judged to serve as the screening condition, the screening efficiency is high, the screening accuracy is high, and therefore a large number of breeding resources are saved.

The invention discloses a blood flow simulation model of cerebral vessels under the simulated weightlessness condition, and belongs to the technical field of physiologic signal simulation. The model comprises an aorta canal, an brachiocephalic artery canal, a carotid canal, a subclavian artery canal, a vertebrarterial canal, an internal carotid canal, an external carotid artery canal, a basilar artery canal, an arteria cerebri media canal, an arteria cerebri anterior canal, a posterior cerebral artery canal, an anterior communicating artery canal and a posterior communicating artery canal, wherein the aorta canal, the brachiocephalic artery canal and the subclavian artery canal form a systemic circulation arterial rete; blood flows from the systemic circulation arterial rete to the carotidcanal and the vertebrarterial canal, then flows into a cerebral circulation arterial rete formed by the internal carotid canal, the external carotid artery canal, the basilar artery canal, the arteria cerebri media canal, the arteria cerebri anterior canal, the posterior cerebral artery canal, the anterior communicating artery canal and the posterior communicating artery canal; and the tail end of the cerebral circulation arterial rete is the downstream of the arteria cerebri media canal, the downstream of the arteria cerebri anterior canal, and the downstream of the posterior cerebral arterycanal. Through the adoption of the blood flow simulation model disclosed by the invention, the analysis of the interaction of the arterial blood flow of the systemic circulation and the cerebral circulation is deeper.