73results about How to "Reduce collection efficiency" patented technology

Throughput efficiency of an optical system is enhanced by using a directional light source coupled to a non-imaging optical element matched to a size and acceptance angle of an imaging lens. In various embodiments, a beam projection system and accompanying method are described that include a lamp body formed from a dielectric material. A bulb, placed adjacent to the lamp body, has a fill that forms a plasma when RF power is coupled to the fill from the lamp body. An optical train is optically coupled to the bulb to transform light generated by the plasma. The optical train includes a non-imaging optical element, an aperture, and at least one imaging lens element.

The invention discloses a bidirectional flow ventilation and air pressure composting method, which comprises the following steps: dwelling pile body with height at 2-2. 5m and upper margin at 0. 5-1. 0m in box compost reactor; inserting three heat indicators and three pile body gap gas sampling pipe into different height; adopting 0. 1-0. 2m3/min fixing air quantity per m3 initial compost raw material and batch process; venting; changing the direction of ventilation when the biggest differential temperature more than 5 deg. c of the three heat indicators; turning over the pile at the second day for one time one day; compressing the air with impulse; discharging momentary; making the pile body float and drop; testing oxygen concentration of the gas in the pile body per 15 min; finishing the compost when the biggest differential value less than 1. 0% of adjacent twice. This invention possesses low operating cost without twice pollution, which can be used to the compost of life garbage, agricultural waste and sludge of the waste water treatment plant.

The invention provides a speech processing method and device, storage medium and electronic equipment. The speech processing method comprises the steps that speech is input into a pre-trained phonemeprediction model to obtain a prediction phoneme corresponding to the speech, the phoneme similarity of the prediction phoneme and the standard phoneme of the speech is calculated, whether the speech meets collection requirements or not is determined based on the phoneme similarity, thus speech recognition is not needed to be conducted to obtain text information of the speech for speech collection,whether the speech meets the collection requirements or not is determined through the trained phoneme prediction model, thus the technical problem that in the relative technologies, speech recognition is needed to be conducted on the speech first to be converted to text information in speech sample collection, due to the fact that speech recognition is not accurate, the collecting efficiency of speech sample collection is consequently low, and the cost is high is solved, and the effects of high efficiency and low cost of speech sample collection are achieved.

A composite insulating panel comprises an external sheet, an internal sheet, and an insulating body between the sheets. The external sheet has a first longitudinally extending raised side underlap projection at one side and a side overlap projection on the opposite side of the panel with a substantially flat portion extending between the projections. A photovoltaic solar collector is mounted to the flat portion of external sheet. The solar collector comprises a photovoltaic sheet and a protective translucent cover for the photovoltaic sheet. A first adhesive layer is provided between the photovoltaic sheet and the translucent cover. A second adhesive layer is provided between the underside of the photovoltaic sheet and the external surface of the composite panel upper or external sheet.

Methods of fabricating nano particulate Titanium dioxide photocatalysts onto a conducting substrate are disclosed. The methods include hydrothermal fabrications with heat treatment steps to increase the crystallinity and photoactivity of the titanium dioxide layers.

The present invention aims at providing a preparative separation/purification system for vaporizing an eluate in a short period of time, while enhancing the efficiency of collecting the target substance by accelerating the initiation of collecting the eluate. The preparative separation/purification system in which water containing a target component is passed through a column 8 to capture the target component in the column 8 and then a solvent is passed through it to collect the target compound, includes: a liquid supply means 7 for supplying a solvent to the column 8, with the target component captured in the column 8, while the column 8 is vertically held with the inlet end thereof directed downwards and the discharge end thereof directed upwards, the solvent having a low solubility to water and having a specific gravity greater than that of water; a passage selection means 12 for changing the passage configuration so that a solution exiting from the column 8 is selectively sent to either a collection passage 13 or a disposal passage 14; a passage control means 30 for controlling the passage selection means 12 so that, when water exits from the column 8, the water is sent to the disposal passage 14, and when solution containing solvent exits from the column 8, the solution is sent to the collection passage 13; and a flow rate control means 30 for controlling so that the water is supplied at a first flow rate to the disposal passage 14, and the solution containing solvent is supplied to the collection passage 13 at a flow rate lower than the first flow rate.

A laser-produced plasma extreme ultraviolet source has a buffer gas to slow ions down and thermalize them in a low-temperature plasma. The plasma is initially trapped in a mirror magnetic field configuration with a low magnetic field barrier to axial motion. Plasma overflows axially at each end of the mirror into magnetic cusps and is conducted by radial magnetic field lines to annular beam dumps disposed around the waist of each cusp.

Various types of automobile exhaust waste heat generation devices at present are complex in process, high in cost, low in integration level, large in size and low in heat-electricity conversion efficiency. The invention discloses a thermopile which is high in integration level, simple in structure, low in cost and high in reliability; the invention also discloses an automobile exhaust waste heat generation and refrigeration device employing the thermopile as a core part for generation and refrigeration. P-type thermocouple arms formed in the shape of a rectangular cylinder and N-type thermocouple arms are arranged in a staggered manner. A heat-insulation and insulting film material is arranged between the adjacent thermocouple arms in an attaching manner for isolation, so that the convection of air is eliminated, the defect of the reduction of the temperature difference between cold and hot surfaces caused by radiation is overcome, and the heat-electricity conversion efficiency is improved. The electric connection between the thermocouple arms is achieved through flexible heat-conduction and electric-conduction materials, so that a thermal stress is alleviated, the adverse effect of the thermal stress on a product is eliminated, and the problem that the reliability and the service life of the product are affected seriously, caused by the deformation and cracking of the thermopile and falling of welding spots between the thermocouple arms which are caused by the thermal stress, is solved.

The invention discloses a preparation method of a high refractive index semiconductor surface anti-reflection passivation composite structure. The method comprises: I, a layer of dielectric film used for a passivated surface is prepared on the surface of a semiconductor; and II, a dielectric layer with gradual refractive index based on dielectric materials with a high refractive index is prepared on the dielectric film, dielectric materials materials with high refractive index select one type or several types from SiN, HfO2, TiO2, ZrO2, Ta2O5 and Y203according to semiconductor materials which need to be matched and the wavelength range of needed anti-reflection, and an anti-reflection passivation composite structure is combined by the dielectric film and the dielectric layer with the gradual refractive index. According to the preparation method, non-radiative recombination on the surface of the semiconductor is reduced, reflection loss is reduced, charge collection efficiency is effectively improved, and the function of wide spectrum wide angle anti-reflection is achieved.

The present disclosure provides a system and method for a fiber-coupled, metal-tip chemical imaging spectroscopy. The system couples the electromagnetic radiation (EMR), such as laser light, through an optical fiber to a conductive tip for both EMR excitation to the sample through the conductive tip and EMR signal collection from the sample through the conductive tip. The system and method effectively eliminates the need for an optical alignment between the EMR source and the tip, and still offers the customary spatial resolution of a non-coupled system.

Provided are sensors and methods for detecting thermal neutrons. Provided is an apparatus having a scintillator for absorbing a neutron, the scintillator having a back side for discharging a scintillation light of a first wavelength in response to the absorbed neutron, an array of wavelength-shifting fibers proximate to the back side of the scintillator for shifting the scintillation light of the first wavelength to light of a second wavelength, the wavelength-shifting fibers being disposed in a two-dimensional pattern and defining a plurality of scattering plane pixels where the wavelength-shifting fibers overlap, a plurality of photomultiplier tubes, in coded optical communication with the wavelength-shifting fibers, for converting the light of the second wavelength to an electronic signal, and a processor for processing the electronic signal to identify one of the plurality of scattering plane pixels as indicative of a position within the scintillator where the neutron was absorbed.

A production method of cylindrotheca clostetium comprises the following steps: respectively connecting a culture medium charging system, a material liquid collecting system, and an air supply system with a hanging-bag photo bioreactor so as to form a culture system of cylindrotheca clostetium; adding cylindrotheca clostetium after expansion culture and the culture medium into the reactor; continuously charging the culture medium with a constant flow rate and continuously injecting air; during the culture process, controlling the seawater temperature to be 10 DEG C-35 DEG C, the salinity to be20-30, and the illuminance to be 3000-10000 lx, controlling the pH of the culture medium to be within 7.8-8.4; continuously collecting mature cylindrotheca clostetium under the action of continuous air injection. The invention not only establishes a mature cylindrotheca clostetium expansion culture method, but also establishes a fully-closed continuous culture method of cylindrotheca clostetium based on the established expansion culture method, and has the advantages that the method accords with the physiological characteristics and ecological habits of cylindrotheca clostetium; during cylindrotheca clostetium culture, the whole culture process is clean, continuous, controllable, has high culture efficiency, and is applicable to the characteristics of production application.

The invention discloses a rapid welding manipulator. The rapid welding manipulator structurally comprises a manipulator, a welding gun, a steering support, a base, a connecting rod and a movable rod,wherein the welding gun is fixedly connected with the manipulator in an embedded mode, the steering support is movably clamped to the base, the base is fixed to a lower end of the manipulator, the movable rod is connected with the connecting rod, and the connecting rod is movably clamped to the steering support; when the manipulator welds a metal product through the welding gun, splashed sparks can be effectively isolated through the protective cover on the connecting rod, and the situation that a movable joint of the manipulator is easily damaged by metal particles condensed after the sparkssplashed to the movable joint of the manipulator are cooled can be avoided; due to the fact that the area, whether welding slag can be attached, of a blocking face is limited, the welding slag attached to the blocking face can be removed through the matching of a fixed pipe and a brush head, and the situation that the collecting efficiency to the welding slag by the blocking face is reduced due toexcessive welding slag attached to the blocking face is avoided.

The invention belongs to the technical field of semiconductor photoelectric devices, and particularly relates to a self-driven MSM ultraviolet detector and a preparation method thereof. The ultraviolet detector provided by the invention comprises a substrate; the patterned low-temperature crystallization layer is arranged on the surface of the substrate; the high-temperature epitaxial layer is arranged on the surface of the patterned low-temperature crystallization layer and an area, not covered with the patterned low-temperature crystallization layer, of the surface of the substrate; the high-temperature epitaxial layer arranged on the patterned low-temperature crystallization layer has metal polarity, and the high-temperature epitaxial layer arranged on the area, not covered with the patterned low-temperature crystallization layer, of the surface of the substrate has nitrogen polarity; the interdigital electrode is arranged on the high-temperature epitaxial layer; the interdigital electrode is composed of two groups of electrodes, one group of electrodes is arranged in a metal polarity area of the high-temperature epitaxial layer, and the other group of electrodes is arranged in a nitrogen polarity area of the high-temperature epitaxial layer. According to the MSM ultraviolet detector provided by the invention, the responsivity and the overall performance of the detector are remarkably improved under a simple framework of an MSM structure, so that the MSM ultraviolet detector can perform self-driven detection.

The invention relates to a high-speed centrifugal spinning device for preparing nanofibers. The device comprises a material containing rotor, a rotation shaft, an upper heater, a lower heater and a collection device. A polymer is arranged in a material containing cavity in the material containing rotor, a spray nozzle communicated with the material containing cavity is formed in the side wall of the material containing rotor, and the upper heater and the lower heater are arranged on the upper and lower portions of the material containing rotor respectively; the bottom of the material containing rotor is connected with the top of the rotation shaft, a collection device is arranged on the exteriors of the material containing rotor and the heater, a taking cavity is sandwiched between the collection device and an external insulation wall, and the nozzle inner cavity of the spray nozzle is of a circular truncated cone structure. According to the device, a high-voltage electric field does not need to be applied, the device is not restrained by conductivity, the production efficiency is high, the collection effect is good, the yarn taking efficiency is high, and the application range iswide.