170results about How to "Improve irradiation efficiency" patented technology

An electron beam apparatus, in which an electron beam emitted from an electron gun having a cathode and an anode is focused and irradiated onto a sample, and secondary electrons emanated from the sample are directed into a detector, the apparatus further comprising means for optimizing irradiation of the electron beam emitted from the electron gun onto the sample, the optimizing means may be two-stage deflectors disposed in proximity to the electron gun which deflects and directs the electron beam emitted in a specific direction so as to be in alignment with the optical axis direction of the electron beam apparatus, the electron beam emitted in the specific direction being at a certain angle with respect to the optical axis due to the fact that, among the crystal orientations of said cathode, a specific crystal orientation allowing a higher level of electron beam emission out of alignment with the optical axis direction.

An illumination device includes a light source 45, a reflection plate 41 for reflecting the light irradiated from the light source 45, and a transmissive and diffusive member 42 for transmitting and diffusing the light from the light source 45 and the reflected light from the reflection plate 41, so that the light transmitted and diffused in the member 42 may be used for illumination. With this indirect illuminating system, an entire area can be uniformly illuminated with high efficiency, almost free of luminance spots. When the illuminating device is used in a plant growth apparatus, uniformity of plant growth is enhanced and the yield of the plants is improved. In addition, space for planting can be utilized to the maximum so that the number of grown plants significantly increases as compared with the conventional direct illumination system.

The invention belongs to a calibration method for a detector used for monitoring ion beam radiation. The cross calibration method used for the online beam monitoring detector in three-dimensional spot scanning beam distribution includes the following steps: (1) measuring response of a large-area parallel-plate ionization chamber to monoenergetic ion pen-shaped beams; (2) forming a calibration field with a diameter of 80 to 120 mm through spot scanning and measuring accumulated dose of a mini-size absolute dose ionization chamber in the center of the dose calibration field; (3) establishing a mapping relation between a central reading and a central dose; (4) calibrating practically. The cross calibration method used for the online beam monitoring detector in the three-dimensional spot scanning beam distribution provided by the invention has advantages that (1) frequency of using a complicated scanning system is reduced and experiment errors and uncertainty of dose calibration in the spot scanning beam distribution are reduced; (2) a complicated conventional method is replaced with the simple and quick method, so that online beam monitoring detector calibrating time is reduced and working efficiency is improved; (3) ion beam three-dimensional spot scanning beam distribution technology is improved and developed, so that convenience is made for adjusting and controlling exposure doses of different scanning spots in an exposure area for realizing three-dimensional intensity modulated irradiation.

A separation unit can confirms a separation state, a detection unit enhances a lighting efficiency and a light reception sensitivity, and a dispensing unit ensures the normal state of a specimen. A specimen separation device characterized by comprising a container for storing a specimen, a nozzle for sucking and ejecting the specimen from the container, a nozzle operating means for moving the nozzle vertically and laterally, and a nozzle controlling means for controlling the suction force and ejection force of the nozzle. A specimen identification device comprising a nozzle for sucking a specimen from a container storing the specimen, a flow path for allowing the specimen to flow therethrough, and a measuring unit having a monitoring light lighting unit and a light receiving unit for observing (monitoring) the specimen that are installed in a flow path, characterized in that the above nozzle, the flow path and the measuring unit are formed in an integrated structure.

The invention discloses a dual-polarization broadband weak coupling feed source array and relates to a phase array feed source receiver in the radio astronomy field. The dual-polarization broadband weak coupling feed source array can be used in feed sources of reflector antennasin the field of communication, observing and control and monitoring. According to the distribution rules of a reflector antenna focal plane field, a hexagonal reflection back cavity vibrator is distributed in a hexagonal small-space distribution mode to form a feed source array, so that energy receiving is facilitated, sampling of a focal plane field distribution is met, and good broadband characteristics and weak array coupling can be achieved. The hexagonal reflection back cavity vibrator comprises a radiator, a coaxial feeder, a hexagonal reflection back cavity and a matching disc, wherein the reflection back cavity adopts a small hexagonal structure, and array forming is facilitated.

The invention discloses a method for reducing ammonia in mainstream smoke of cigarettes, which includes: packing tobacco/finished cigarettes with paper cartons with a stacking thickness of 26-72cm and a stacking density of 0.20-0.34g/cm<3>; placing the cigarette cartons on a conveying device at the conveying speed of 0.02-0.3m/s, and subjecting the cartons to electronic beam/X-ray irradiation generated by an electronic accelerator, wherein the electronic accelerator is 5-10MeV in energy, 0.3-20mA in beam current, 10-20kW in beam power, 100cm in largest scanning width, 5-15Hz in scanning frequency, 1-10kGy in irradiation dose and 5-35 DEG C in set operating temperature; allowing the cartons to pass a scanning widow of the electronic accelerator twice for irradiation, wherein the distance from the center of each carton to the scanning window of the electronic accelerator is 40-60cm in irradiation; and limiting the ambient humidity to be no larger than 60% in operation.

The apparatus has a rotating body 11 in an irradiation processing chamber 10. Outside the rotating body 11, plural retaining mechanisms 2 are installed at regular interval to retain open-mouthed containers. Above the conveying path, an electron beam generating means 40 is arranged. The rotating body 11 has a rotary shaft 12 that penetrates into the electron beam generating means 40. On the rotary shaft 12, a grid plate 45 of an electron beam source 41 of the electron beam generating means 40 is rotatively installed. On the grid plate 45, plural emission holes 46 are provided at the same interval as that of the retaining mechanisms 2 on the rotating body 11. In an predetermined irradiation area, the emission holes 46 and a irradiation windows 43 on the irradiation processing chamber 10 and the retaining mechanism 2 for holding the container are aligned approximately on the same axes.

The invention discloses a broadband double circular polarization feed source of a radio heliograph. The broadband double circular polarization feed source is applied to a low-frequency array paraboloid of a new-generation centimeter-decimeter wave radio heliograph. The heliograph is composed of 40 single reflecting surface antennas with the frequency band of 0.4GHz to 2GHz and 60 single reflecting surface antennas with the frequency band of 2Ghz to 15GHz and has the advantages of being high in space, high in frequency, high in time resolution and the like. When the frequency band is in a range of 0.4GHz to 2GHz, determination is made by physical properties of an observed object, and the heliograph needs to have a comprehensive imaging capacity in a broadband range. The feed source is an important component of an analog receiving system at the front end of the heliograph. The feed source used by a current project is novel in shape and small in size and reduces shielding of a reflecting surface in the whole broadband range so that efficiency of the antennas can be greatly improved. A standing wave of the tested feed source is smaller than 1.5, an axial ratio is smaller than 1.5dB, and a phase center is not changed along with frequency and is basically unrelated to the frequency. The broadband double circular polarization feed source of the radio heliograph is simple in structure and reliable in quality, and electric performance is good in stability.

The invention discloses a marine photovoltaic support lifting mechanism and platform including a supporting platform; a mounting groove is formed in the supporting platform; a first motor is fixedly connected into the mounting groove; the output end of the first motor is fixedly connected with a first bevel gear; a rotating shaft is inserted into the middle of the upper surface of the supporting platform; a second bevel gear is fixed to the bottom end of the rotating shaft and engaged with the first bevel gear, a rotating disc is fixedly connected to the top end of the rotating shaft, a supporting base is fixedly connected to the upper surface of the supporting platform, rolling wheels are rotationally connected to the supporting base, and the top ends of the rolling wheels abut against the lower surface of the rotating disc; according to the invention, the photovoltaic support is changed from a fixed structure, the inclination angle can be adjusted for placement, meanwhile, the photovoltaic support has the rotating and lifting functions in the using process, the orientation of the support can be well adjusted according to the actual situation, the lighting effect of the solar cellpanel is good, and the light energy absorption effect and the working efficiency are improved.

Disclosed is a solar panel mounting frame with a front and back limiting function. The mounting frame comprises a frame assembly (200) and multiple mounting plates (1), the multiple mounting plates (1) are each used for mounting a solar panel (17), the frame assembly (200) is provided with multiple mounting empty windows, and each mounting empty window is used for bearing one mounting plate (1) so as to enable the solar panel to be at a working state of receiving sunlight.

The invention discloses a solar ray utilization method for plant culture. According to the method, botanical plants to be cultured, a shutter horizontally arranged above the plants and an automatic control system are adopted; the shutter comprises a rectangular framework and a plurality of blades rotatably and parallelly arranged in the framework; the upper surfaces of the blades are provided with solar photovoltaic cells; the lower surfaces of the blades are provided with light-emitting diode (LED) lamps; and the automatic control system comprises a control device with preset procedures, a storage battery and a stepping motor. By the method, solar energy stored in the daytime is utilized to continuously provide light for the plants at night, the plants are simultaneously prevented from being burnt by strong light by automatically adjusting the shutter to open angles, and the energy cannot be wasted, so that solar rays can be further and effectively utilized to improve appropriate-strength illumination time of the plants in each day and shorten the grow and culture period of the plants.

A laser diode (LD) assembly for medical therapy and a medical therapy sheet having the same, which are capable of facilitating the assembly and maintenance of a laser diode (LD) which can emit laser beams or beams having a wavelength which is the same as or similar to that of the laser beams, effectively dissipating the heat generated from the laser diode, and recycling the heat for medical therapy, and which has good waterproofness. The medical therapy sheet includes a sheet body having installation holes, and laser diode assemblies detachably installed in the installation holes of the sheet body. Each laser diode assembly includes a laser diode, a first housing having an accommodation space in which the laser diode is received, a driving circuit board connected with the laser diode in order to drive the laser diode, and a second housing detachably coupled to the first housing.

The invention relates to a heavy ion production device for industrial production of nuclear track membrane. The heavy ion production device comprises an ion source, an LEBT beam line, a particle accelerator, an HEBT beam line and a membrane irradiation terminal; the ion source is used for generating a heavy ion beam in a high charge state and carrying out primary acceleration on the heavy ion beam; the LEBT beam line is used for analyzing the heavy ion beam and transmitting the heavy ion beam to the particle accelerator in a matching manner; the particle accelerator performs main accelerationon the heavy ion beam and then injects the heavy ion beam into the HEBT beam line; the HEBT beam line splits the injected heavy ion beam into a plurality of heavy ion beams and then transmits the heavy ion beams to a plurality of membrane irradiation terminals, and the membrane irradiation terminals lead out the heavy ion beams and irradiate a thin membrane placed in the atmospheric environment. Due to the fact that the thin membrane can be placed in the atmospheric environment to be irradiated, the thin membrane is convenient and rapid to replace, the thin membrane replacing time is greatly shortened, multiple terminals can irradiate the thin membrane at the same time, the irradiation efficiency of the thin membrane is greatly improved, and thus the production efficiency of the nuclear track membrane is improved.

An approach for preparing a vaccine using ultraviolet radiation is described. Aspects of this approach involve multiple iterations of inactivation of the vaccine using an ultraviolet radiation source at a set of different wavelengths and dosages. A recognition test of the vaccine using the set of different wavelengths and dosages is performed after the multiple iterations of inactivation. A controller compares results from the inactivation test and the recognition test to determine an area of acceptable radiation dosages and wavelengths generated from the ultraviolet radiation source that irradiate the live organisms without affecting efficacy and safety of the vaccine. The area of acceptable ultraviolet radiation dosages and wavelengths is representative of a difference between an ultraviolet radiation dosage that is required for inactivation and an ultraviolet radiation dosage that leads to a loss of recognition.

The invention relates to a grow light device, in particular to a lifting LED grow light device which can evenly irradiate plants effectively through LEDs, and a constant distance between the plants and LED grow lights is maintained. According to the scheme, LED grow light sets and a laser ranger are fixed below a support platform, when the laser ranger scans the signal that the plants under the laser ranger grow to a set height, the signal is transmitted to a motor of a locking winch, the locking winch is started to tighten steel wire ropes to lift the support platform, and the LED grow light sets below the support platform are driven to go up and be maintained at a set distance; the support platform can be lifted by tightening the steel wire ropes through hand-cranking of the locking winch. The lifting LED grow light device has the advantages that along with growth of the plants, the device synchronously goes up and is maintained at a constant distance with the plants, and illuminance is not changed; the distance between the LED grow lights and the plants is set to be the shortest, energy is saved, and light energy beneficial to growth of the plants is given to full play.

The invention discloses a method for reducing crotonaldehyde in mainstream smoke of cigarettes, which includes: packing tobacco/finished cigarettes with paper cartons with a stacking thickness of 26-72cm and a stacking density of 0.20-0.34g/cm<3>; placing the cigarette cartons on a conveying device at the conveying speed of 0.02-0.3m/s, and subjecting the cartons to electronic beam/X-ray irradiation generated by an electronic accelerator, wherein the electronic accelerator is 5-10MeV in energy, 0.3-20mA in beam current, 10-20kW in beam power, 100cm in largest scanning width, 5-15Hz in scanning frequency, 1-10kGy in irradiation dose and 5-35 DEG C in set operating temperature; allowing the cartons to pass a scanning widow of the electronic accelerator twice for irradiation, wherein the distance from the center of each carton to the scanning window of the electronic accelerator is 40-60cm in irradiation; and limiting the ambient humidity to be no larger than 60% in operation.

A sterilization device includes a treatment chamber provided with multiple inlet ports and an outlet port, and multiple light sources that irradiate a fluid flowing within the treatment chamber with ultraviolet light. Each of the multiple light sources is disposed so as to emit ultraviolet-light toward a fluid flowing closer to the corresponding inlet port than to the outlet port. The treatment chamber may be of a shape extending in the longitudinal direction from a first end surface toward a second end surface. The multiple light sources may include the first light source disposed on the first end surface and the second light source disposed on the second end surface.