31 results about "Radiation load" patented technology

Exemplary embodiments of the present invention relate to inorganic phosphors based on silicate compounds having improved stability under a resulting radiation load and resistance to atmospheric humidity, which are capable of converting higher-energy excitation radiation, i.e. ultraviolet (UV) or blue light, with high efficiency into a longer-wavelength radiation which may be in the visible spectral range. A calcium molar fraction x having a value between 0 and 0.05 is added to a silicate phosphor having the general formula Sr3-x-y-zCaxMIIySiO5:Euz.

In a method for alignment of an antenna (1) with an adjustable directional characteristic in a mobile station in a mobile radio system, the alignment process is based on determination of two variables as a function of the direction, with the first variable(6) being characteristic of the signal strength and the second variable (5)being characteristic of the signal quality , and their evaluation (7). Furthermore, it is possible to make use of position information and alignment information relating inter alia to satellite-based navigation systems, and to take account of the alignment of the user.

The invention relates to a prediction-based control method for a multi-connected air-conditioning system, comprising: 1. Predicting the temperature and humidity outside the building, and calculating the envelope structure load and solar radiation load of the air-conditioning system; 2. Predicting the periodic law of the number of people in the building ;3. Predict the time point of the air conditioning system to be adjusted; 4. Real-time monitoring includes the operating parameters of outdoor unit wind speed, compressor speed, refrigerant flow, indoor unit wind speed and air volume, and indoor unit flow distribution; 5. Count multiple sampling cycles The temperature and humidity outside the building, the number of people in the building, operating parameters, and hourly COP are used as training samples, and the operating parameters corresponding to each characteristic coefficient, comfort pre-control time, temperature, and optimal COP are calculated using statistical or machine learning methods 6. Predict the operating parameters corresponding to the best COP at the time point to be adjusted, so as to adjust the system operating parameters and pre-control time. The method has high control precision, and improves the control comfort and energy-saving effect.

The present invention is applicable to the technical field of communication, and provides a dual-polarized broadband antenna vibrator unit including: a radiator and a balanced feeding device; the radiator includes four radiating arms, and each radiating arm is provided with a hollow structure; each The periphery of the radiating arms is polygonal and includes a notch part matching the shape of the peripheral conductor, and the notch part of each radiating arm is electrically connected to a part of the corresponding peripheral conductor; each radiating arm is The corners opposite to the missing corners are provided with an open circuit, which is hollowed out together with the hollow structure, and the open circuit divides the opposite corners of the missing corners into two mutually symmetrical ends; a loading section is respectively extended from the two mutually symmetrical ends, The adjacent radiation arms form a closed electromagnetic loop through the electromagnetic coupling between the loading sections of the adjacent radiation arms. The invention is simple in structure, easy to manufacture, and has the advantages of beam convergence, excellent radiation performance and wide frequency band, and can realize the optimization of the electric performance of the antenna.

The electromagnetic compatibility test method of the electric propulsion system includes: the measurement of the wave transmission rate of the wave-transparent sub-chamber of the electric propulsion system; the measurement of the steady-state and transient electric field radiation of the electric Under transient conditions, the peak signal measurement of the power line; the comparative measurement of the conduction and radiation emission characteristics of the simulated load and the real thruster; the measurement of the influence of the plume on the communication, and the electromagnetic compatibility test data of the electric propulsion system. The method of the present invention does not need to be carried out in a professional electromagnetic compatibility laboratory, and the test is directly carried out in the field or the field where the electric propulsion system works. The error of the test result is small, which can truly reflect the electromagnetic compatibility performance of the propulsion system, and greatly reduces Reduced test costs and improved work efficiency.

The present invention makes it possible to make high-quality recordings of the anterior and / or posterior segments of the eye as an individual image or also as a sequence of images without increasing the radiation load on the eye to be examined. In the method according to the invention, at least one pre-flash is used in order to determine an optimal exposure time for the main flash based on the recording of the pre-flash which is reflected by the object to be recorded. Both the pre-flash and the main flash are controllable and the recordings of the pre-flash and main flash are recorded with the same sensor of the electronic camera and are evaluated electronically by a control unit, and the recording of the main flash and, as the case may be, of the pre-flash is analyzed and / or corrected and displayed to the user.

A thermionic emission device includes an indirectly heatable main emitter with a main emission surface and a connectible heat emitter with a heat emission surface. The heat emission surface is disposed at a predefinable distance from the main emission surface. In the operating state, the main emitter is at a constant main potential and the heat emitter can be switched between at least two heating potentials which differ from one another and which differ from the main potential. Through the use of the thermionic emission device, the radiation load for a patient is reduced in the case of dose-modulated x-ray recordings.

The invention discloses a direct feed omnidirectional printed antenna with a radiation load, which relates to a printed antenna, in particular to an omnidirectional radiation printed antenna, and is used for solving the problem of incapability of simultaneously meeting the requirements of high omnidirectional radiation, large bandwidth and high gain existing in the conventional omnidirectional antenna. The lower end of a coplanar waveguide central feeder line is connected with a feeding port matching branch knot; the upper end of the coplanar waveguide central feeder line is connected with a radiation terminal load; a first vibrator and a second vibrator are mouth-shaped; one side of the first vibrator which is far away from the coplanar waveguide central feeder line is provided with a first square through hole; one side of the second vibrator which is far away from the coplanar waveguide central feed line is provided with a second square through hole; a second horizontal feeder line is connected with the first vibrator through two first metal through holes; and a third horizontal feeder line is connected with the second vibrator through two second metal through holes. The direct feed omnidirectional printed antenna is applied to the field of point-to-multipoint communication of a C waveband.

The invention relates to determination of a clinical characteristic parameter using a combination of different recording modalities and to a method for determining a clinical characteristic parameterof a body vessel segment. The method comprises a) providing (1), to a computing device, a three-dimensional reconstruction of a body vessel containing the body vessel segment; b) providing (2), to a computing device, segmented angiography recording of the body vessel segment; c) by the computing device, extracting (4) at least one global feature of the body vessel from the three-dimensional reconstruction; d) by the computing device, extracting (5) at least one local feature of the body vessel segment from the angiography recording; and e) determining (8) the clinical characteristic parameterof the body vessel segment according to the extracted local feature and the extracted global feature in order to compute the clinical characteristic parameter of the body vessel segment as accuratelyas possible in a case where the radiation load of a patient is the lowest.

A lamp with adjustable heat radiation loads comprises a heat radiator, a heat radiation adjustment assembly, a heat radiation panel, a tightness adjustment assembly and a light source assembly. A first installing groove is formed in the edge of the heat radiator. The heat radiation adjustment assembly is attached to the heat radiator and comprises a plurality of heat radiation adjustment plates which are overlapped in sequence. The heat radiation panel is attached to the side surface, far away from the heat radiator, of the heat radiation adjustment assembly. A second installing groove is formed in the edge of the heat radiation panel. The tightness adjustment assembly comprises a first clamping plate, a second clamping plate, an adjustment screw rod, a cushion block, a fixing head and an adjustment nut, wherein the first clamping plate is arranged in the first installing groove in a sliding mode, the second clamping plate is arranged in the second installing groove in a sliding mode, the first clamping plate is provided with a threaded hole, and a first end of the adjustment screw rod penetrates through the threaded hole and is in threaded connection with the first clamping plate. According to the lamp with adjustable heat radiation loads, different heat radiation loads can be adjusted correspondingly to meet different heat radiation requirements.

The invention provides a P (Positive) type insert layer with a cycle structure and a growing method. An epitaxial structure of the P type insert layer comprises a substrate, a low-temperature GaN buffer layer, a GaN undoped layer, an N (Negative) type GaN layer, an MQW (Multiple Quantum Well) structure, a low-temperature P type GaN layer, a P type AlGaN layer, a high-temperature P type GaN layer and a P type contact layer in sequence from bottom to top; the growing method of the P type insert layer comprises the following specific steps that a PAlGaN / PinGaN cycle structure layer grows; the structure comprises three to ten structures that PGaN and PInGaN grow in an overlapping way; the growth is divided into two steps, i.e. growing an Al component to gradually raise the PAlGaN layer at first, and after the completion of growth that the PAlGaN layer is gradually raised along with the Al component, growing the PInGaN layer, and then continuously growing six PAlGaN layer / PInGaN layer cycles. According to the P type insert layer and the growing method, the dislocation density of PGaN can be decreased, and the crystalline quality can be improved; in addition, the generation of non-radiating load centers is inhibited, and the injection efficiency of cavities is improved, so that the light emitting efficiency of a gallium-nitride-based LED (Light Emitting Diode) is improved; thirdly, the diffusion of Mg atoms towards an active area is reduced, so that the internal quantum efficiency is improved.

The present invention relates to a method of estimating indoor heating and cooling loads by using estimated insolation, the method being characterized by distinguishing between windows and doors and walls when obtaining a solar radiation load and an insulating load and by applying different load property coefficients for different compass bearings, so as to be able to more accurately estimate indoor heating and cooling loads.

An overlapped heat radiation structure comprises a bearing abutment, a supporting assembly, an overlapped assembly and a guide plate. The bearing abutment is provided with an installing surface. The supporting assembly comprises a supporting rod, a buffering ring and a locking ring, the supporting rod is arranged on the installing surface and sleeved with the buffering ring and the locking ring, the locking ring and the supporting rod are in threaded connection, and the locking ring abuts against the side surface, far away from the bearing abutment, of the buffering ring. The overlapped assembly is arranged on the installing surface and clamped between the buffering ring and the bearing abutment. The overlapped assembly is provided with a receding groove, and the supporting rod is located in the receding groove. The overlapped assembly comprises a plurality of overlapped plates which are overlapped. The guide plate is arranged on the installing surface and located in the receding groove, and the guide plate abuts against the inner side wall of the receding groove. In this way, different heat radiation loads can be adjusted correspondingly by adjusting the number of the overlapped plates of the overlapped assembly. In addition, the overlapped assembly is clamped between the buffering ring and the bearing abutment, and the overall structure stability is higher.