13 results about "Absorption radiation" patented technology

The present invention provides a radiation shield and radiation protective eyewear that can reduce the amount of X-rays absorbed by the lens of the eye of the operator performing the X-ray fluoroscopy examination during the examination process. [Solution] The radiation shield 100 of the present invention is a radiation shield to be attached to eyeglasses, and comprises a flexible sheet 101 containing a material that absorbs radiation, a shape-retaining member 102 that holds the sheet 101 in a predetermined three-dimensional shape, and a fixing means 103 that allows the sheet 101 to be attached and fixed to one temple of the eyeglasses.

The utility model discloses a self-shielding electron accelerator, which relates to the technical field of electron accelerators, solves the problems of poor anti-radiation effect and inconvenience in assembly and disassembly of the existing device, and adopts the following scheme that the top surface of a vertical plate is provided with a side plate of which the specification is matched with that of the vertical plate. Through the arrangement of the side plates, the water tank and the anti-radiation shielding cloth, the side plates and the top plate made of steel plates can shield radiation on the side faces and the top face, the anti-radiation shielding cloth can shield radiation on the left side and the right side, the water tank on the bottom face can absorb a large amount of radiation, and the radiation shielding effect is good; meanwhile, through the arrangement of the mounting holes A, the threaded holes A and the mounting holes C, the mounting holes A and the mounting holes B can facilitate the mounting of the bottom plate and the vertical plate, the threaded holes A and the threaded holes B facilitate the mounting of the side plate, the mounting holes C and the mounting holes D facilitate the mounting of the top plate, the mounting and dismounting are simple and convenient, and the use convenience is improved.

This disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of sensing metal ions using three-dimensional printed ion sensors. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and an ion-sensing agent. The fusing agent can include water and an electromagnetic radiation absorber. The electromagnetic radiation absorber can absorb radiation energy and convert the radiation energy to heat. The ion-sensing agent can include water and a redox-active inorganic salt.

Disclosed herein is a spectroscopy device incorporating a mid-infrared laser. In one particular embodiment a spectroscopy device is provided including: a substrate; a single mode laser positioned on the substrate; a single mode detector positioned opposite to the single mode laser on the substrate. A gap is formed between the single mode laser and the single mode detector and a substance is positioned in the gap. The single mode laser is configured to output a tunable narrow wavelength of radiation towards the detector and when the single mode laser outputs a wavelength of radiation overlapping one of the substance's rotational-vibrational energy levels, the substance at least partially absorbs the radiation. The single mode detector is configured to measure the amount of narrow wavelength radiation that is not absorbed by the substance between the single mode detector and the single mode laser.

The utility model relates to the technical field of electronic information, in particular to an anti-radiation displayer device which comprises a protection structure used for improving brightness and a heat dissipation structure used for reducing heat of a displayer, the heat dissipation structure is installed in a displayer body, and a clamping block is fixedly connected to the outer side of the displayer body. And a supporting plate is arranged at the bottom of the clamping block. Basic support can be provided through the supporting layer, the fiber layer enhances the structural strength and possibly has the conductive or shielding characteristic, the protective layer adopts an ITO film to achieve electromagnetic shielding, the absorption layer absorbs radiation energy through a polypropylene material, and the dispersion layer disperses residual radiation energy through polyvinyl chloride. The protection structure can effectively shield and absorb electromagnetic radiation through a multi-layer material, the problem that the electromagnetic radiation has adverse effects on a display and a user can be solved by optimizing the protection structure, the use safety can be improved, and the health of the user can be protected.

The invention provides a gas remote sensing infrared characteristic calculation method and device. The technical problems that an existing high-temperature gas emission radiation long-distance transmission characteristic is huge in calculation amount and errors are not easy to overcome are solved through a broadband k distribution model based on atmospheric transmissivity weighting. The method comprises the following steps: establishing an atmospheric transmissivity weighted broadband k distribution model by using atmospheric transmissivity as an emission item influence factor of a gas internal spectral radiation transfer equation, and avoiding the reduction of calculation precision caused by uncorrelated k characteristics between a carrier hydrocarbon fuel gas wake flow absorption radiation spectrum and an atmospheric absorption radiation spectrum. A gas long-distance infrared characteristic calculation model which is small in calculation amount, high in calculation precision and good in compatibility is formed, and the requirements for precision and efficiency of numerical simulation of turbulent flow tail jet flow infrared remote sensing characteristics of a hydrocarbon fuel carrier and a complex structure exhaust system of the hydrocarbon fuel carrier can be met.

The present disclosure includes a multi-fluid kit for three-dimensional printing. The multi-fluid kit can include a fusing agent including water and a radiation absorber that absorbs and converts radiation energy into heat, an acidic agent including water and an acidic component having a pH of about pH 1 to about pH 6.9, and a porosity promoter including water and a porosity promoting compound. The porosity promoting compound can chemically react with the acidic component to generate a gas, and can be selected from sodium bicarbonate, potassium bicarbonate, or a combination thereof.

Provided in the present disclosure are a radiation protection robot and a backscatter inspection apparatus. The radiation protection robot comprises: a first wheel enabling the radiation protection robot to move; a shielding device capable of reflecting and / or absorbing radiation; and radiation sensors configured to sense the radiation. The radiation protection robot is configured to move, by means of the first wheel, towards an area where a radiation dose value sensed by the radiation sensors increases, and to block the propagation of the radiation by means of the shielding device.

The utility model relates to the technical field of high-precision X-ray protection, in particular to a radiation protection device of a high-precision X-ray sensitive component, which comprises a base, a loading plate, a connecting seat, a ray tube and a ray head, the loading plate is fixedly connected with the upper end of the base, the connecting seat is fixedly connected with the upper end of the base, and the ray tube is fixedly connected with the connecting seat. The ray tube is located at the upper end of the connecting base, the ray head is located on the side face of the ray tube, and a protection device is arranged on the surface of the carrying plate. According to the utility model, through the arrangement of the protection device, materials are effectively shielded, the effect of preventing equipment rays from being refracted on the surfaces of the materials is achieved, when the existing equipment is used, the rays are generally irradiated on the surfaces of objects, but the irradiation angles and the surfaces of the objects are smooth; the problems that irradiation rays are prone to refraction to irradiate observers, the observers easily absorb radiation for a long time, and the health of the observers is damaged are solved, and the use convenience is greatly improved.

The application discloses an optical frequency conversion chip and a preparation method and a reflection type optical frequency conversion system thereof, and relates to the technical field of semiconductors.The optical frequency conversion chip comprises a silicon substrate and a plurality of pixel units arranged in an array on the surface;each pixel unit comprises a support structure and an absorbing radiation layer;the support structure comprises a contact layer and two support legs;the absorbing radiation layer is located on the surface of the side of the contact layer away from the silicon substrate;the projection of the contact layer on the silicon substrate completely covers the projection of the absorbing radiation layer on the silicon substrate;there is a spacing space between the contact layer and the silicon substrate;the contact layer is connected with the support legs;the support legs are located on the first surface of the silicon substrate and on the side of the opposite top corners of the contact layer;the pixel unit is S-shaped.The application solves the problem that the chip resolution is low, the heat dissipation surface of the pixel is large, and the apparent temperature is reduced due to the difficulty in heating, can improve the heating speed of the pixel unit, reduce the thermal crosstalk between adjacent pixels, and improve the refresh frequency, resolution and apparent temperature of the image.

The invention relates to the technical field of fine microelectronic manufacturing, in particular to an oxygen transmission module shielding case convenient to install, which comprises a filtering mechanism, the filtering mechanism comprises a filtering sleeve, a shielding case mechanism is arranged in the device, a shielding case left shell and a shielding case right shell are connected through a rectangular buckle and a rectangular clamping groove, and an oxygen transmission module is clamped in the shielding case mechanism. Then the output circuit board is clamped into a bottom groove of the shielding case mechanism, the connection tightness of the shielding case mechanism is enhanced, the module is connected to the connecting circuit board through the supporting feet, the module and the connecting circuit board can clamp the shielding case mechanism, and joint installation of the oxygen transmission module and the shielding case mechanism is achieved; radiation generated during operation of the oxygen transmission module firstly reaches the filter plates, the plurality of sheet-shaped filter plates absorb the radiation, the radiation is further isolated through the subsequent shielding cover and the silver coating, the shielding cover mechanism reversely isolates interference and radiation of the outside to the oxygen transmission module, and meanwhile, the sheet-shaped structures of the filter plates facilitate heat absorption and heat dissipation.

The invention relates to the technical field of satellite single-machine temperature control, in particular to a single-machine installation structure and a single-machine thermal control method. A single-machine installation structure comprises a single-machine installation plate, an expansion type thermal control plate, a thermal control plate driving mechanism and a heat conduction structure. The single machine is mounted on the satellite platform through the single machine mounting plate in a heat-insulating manner; the single machine is connected with the satellite platform through a single machine mounting plate; the single machine is in heat-conducting connection with the single machine mounting plate; the single-machine mounting plate with the self-heating function is in heat conduction connection with the expansion type thermal control plate through a heat conduction structure; one surface of the expanded thermal control board is a radiating surface, and the other surface is an absorbing surface or an isolating surface; wherein the absorption radiation ratio of the absorption surface is greater than that of the radiation surface; the thermal control board driving mechanism used for controlling the expansion degree and the pointing direction of the expansion type thermal control board is installed on the satellite platform and is in signal connection with the control system used for controlling the temperature of the single machine. According to the expansion type thermal control board provided by the invention, the heat dissipation function and the heating function of the thermal control board can be switched.