35results about How to "Uniform incidence" patented technology

The invention belongs to the technical field of cotton disease resistance breeding and specifically relates to a cotton verticillium wilt resistant seedling stage identification method. The method provided by the invention comprises the following main steps of: firstly carrying out shaking culture on cotton verticillium wilt germ 6SY2-37 collected in China Center for Type Culture Collection with the collection number being CCTCC NO: M2011095 in a Czapek's liquid medium at the temperature of 25 DEG C for 5d, filtering by the use of gauze, counting by the use of a blood cell counting panel, preparing 5*106 spore/ml, pulling up seedling with a matrix when the water-planting cotton seedling grows to a stage of two leaves and one core, cutting 1cm of water root, dipping the root for 10s and inoculating, embedding wet soil into a plastic earthen bowl, inoculating pathogen, immediately watering to prevent the cotton seedling from fading, inoculating for 10 days and causing the disease. The method provided by the invention has advantages of high survival rate of the cotton seedling after inoculation, uniform inoculated pathogen, rapid morbidity, convenient operation and good stability of results. In addition, the method takes short time, requires short seedling growing time and is convenient to manage. Therefore, the method is suitable for cotton verticillium wilt resistance identification and pathogen pathogenicity differentiation determination of large-batch materials.

An optical coupler has a first terminal board and a second terminal board, a first conversion element for converting an electrical signal into an optical signal mounted on a surface of a first element mounting section of the first terminal board, a second conversion element for converting an optical signal into an electrical signal mounted on a surface of a second element mounting section of the second terminal board; and a light reflective curved surface formed so as to cover the first conversion element and the second conversion element. The surfaces of the first element mounting section and the second element mounting section have the same orientation. An optical signal emitted from the first conversion element is reflected on the light reflective curved surface, to optically couple the first conversion element and the second conversion element. The second conversion element has a plurality of light receiving cells that are electrically connected in series, arrayed in parallel with one another, and longer in a longitudinal direction than in a width direction. The first conversion element is arranged inside an area sandwiched between two contact lines that are set so as to be in contact with an outline of the second conversion element, and are in parallel with a length direction of the light receiving cells.

The invention relates to the field of cotton verticillium wilt identification and specifically relates to an improved verticillium wilt resistance identification method for a cotton variety in an artificial disease garden during a whole growth period. The method comprises the steps that (1) pathogenic bacteria used for identification are cultivated, a corn and sand culture medium is applied, and sand and corn powder are mixed thoroughly according to a mass ratio of 1:1; (2) the disease garden is built and inoculation is carried out, wherein the inoculation of the pathogenic bacteria is carried out by a seed trench inoculation method; (3) states of cotton verticillium wilt are investigated; and (4) verticillium wilt resistance of the cotton variety is evaluated. According to the method provided by the invention, disease attacking is uniform and consistent in the disease garden, so that more accurate disease identification results can be obtained; classification standards of disease state investigation are scientific and can be mastered easily; the disease resistance of the cotton during the whole growth period can be reflected fully; and results are accurate. In addition, the method is economic and environment-friendly.

The invention discloses an inoculation identification method for clubroot of cruciferous crops, belongs to the technical field of plant protection, and provides the inoculation identification method for clubroot of cruciferous crops. Aseptic dried sphagnum is used as a carrier for culturing Plasmodiophora by inoculating. The method of the invention has the advantages that the consumption of bacterial sources is low, inoculating efficiency is high, operability is high, pathogenesis is uniform, result stability is good, disease determination is highly sensitive, the method is applicable to the identification of physiological races of small samples and the identification of disease resistance in large-batch varieties, and the method serves for breeding novel disease-resistant varieties and reasonably laying out disease-resistant varieties.

A solar plant enabling transformation of solar energy exploiting most of the solar spectrum with very efficient yields, including: at least one solar collector including a concentrator, configured to collect and concentrate solar radiation in the concentrator; a solar laser device to transform radiation received from the concentrators into laser radiation; a receiver and/or a solar reactor configured to receive radiation from the laser device and transform it into another form of energy; and can include flexible lightguides or plane mirrors to transport the radiation received from the laser device to the solar reactor and/or receiver, and photovoltaic cells interspersed among the collectors and laser devices to transform the concentrated radiation into electricity and allow radiation not transformed to pass to the laser devices.

The invention relates to a concentrating solar photo-thermal and photoelectric mixed collector. The collector comprises quartz heat colleting tubes which are internally filled with semitransparent liquids, a photovoltaic cell and a cooling channel thereof. The collector further comprises reflectors arranged on two sides of the quartz heat collecting tubes, quartz glass tubes externally surrounding the quartz heat collecting tubes, the photovoltaic cell and the battery cooling channel, metal end covers at two ends of the quartz glass tubes and thermal expansion counteracting structures. The quartz glass tubes tightly seal the heat collecting tubes in a vacuum environment, so that the heat loss of the heat collecting tubes is reduced; the quartz heat collecting tubes are designed as single-sided or double-sided concave channels, so that the incident rays at the photovoltaic cell are more uniform, and therefore, the photoelectric efficiency is improved and the pressure bearing capacities of the quartz heat collecting tubes are improved; and the thermal expansion counteracting structures absorb axial thermal deformation at a high temperature of the heat collecting tubes. Compared with the prior art, the solar utilization ratio of the photo-thermal and photoelectric mixed collector is effectively improved, the problems of thermal expansion and pressure resistance of the heat collecting tubes are solved, and the stability of the mixed collector is improved.

An illumination system, including a first light source for providing a first beam; a second light source for providing a second beam; a wavelength conversion element having a reflection region and a conversion region, wherein the reflection region is for reflecting the first beam and the conversion region is for converting the first beam into a third beam; a first light splitting element for allowing the second beam to pass; a second light splitting element for reflecting the first beam penetrated by the first light splitting element and allowing the second beam to pass, wherein the first light splitting element is disposed between the wavelength conversion element and the second light splitting element; and a light homogenizing element for receiving the first beam, the second beam, and the third beam, and generating an illumination beam, is provided. A projection apparatus including the illumination system is also provided.

The invention relates to a light guide plate and a manufacturing method thereof. The light guide plate comprises a plate body and at least one positioning part, wherein the plate body is provided with a light emergent surface, a reflective surface opposite to the light emergent surface and at least one light incident surface which is contacted with the light emergent surface and the reflective surface; and the positioning part is connected to at least one side of the plate body. The method for manufacturing the light guide plate is realized through the following steps: providing at least one light guide plate which comprises a plate body and at least one positioning plate connected to the plate body, wherein the plate body is provided with the light emergent surface, the reflective surface opposite to the light emergent surface and at least one light incident surface contacted with the light emergent surface and the reflective surface; providing a positioning tool which is coupled to the positioning part to fix the plate body; and providing at least one cut tool which treats the light incident surface of the plate body and forms an optical element array on the light incident side. The invention has the beneficial effects that: light can enter into the light incident surface uniformly to provide a uniform area light source.

The invention discloses a photoelectric detector and a manufacturing method thereof. The photoelectric detector comprises a substrate, a buffer layer which is arranged on the substrate, a waveguide layer which is arranged on one side, far away from the substrate, of the buffer layer, a gradient optical matching layer which is arranged on one side, far away from the buffer layer, of the waveguide layer, an absorption layer and a cathode which are arranged on one side, far away from the waveguide layer, of the gradient optical matching layer, a cladding which is arranged on one side, far away from the gradient optical matching layer, of the absorption layer, a contact layer which is arranged on one side, far away from the absorption layer, of the cladding, and an anode which is arranged on one side of the contact layer, wherein the gradient optical matching layer is a single-layer thin film, and in the first direction, the refractive index of the gradient optical matching layer is gradually increased, and the first direction points from the waveguide layer to the absorption layer. The photoelectric detector is advantaged in that advanced focusing can be realized, coupling efficiencyis improved, device process difficulty is reduced, and cost is reduced.

The invention belongs to the technical field of crop disease resistance identification, and particularly relates to a method for identifying southern blight disease resistance of peppers. The method comprises the following steps: (1) activating and culturing pepper southern blight bacteria, and preparing pathogenic bacterium inoculation strips; (2) sowing seeds in a sterilization matrix, culturingpepper seedlings for inoculation, and carrying out inoculation through a bacterium strip embedding method, wherein the inoculation parts of the pepper seedlings are 1 cm away from the base parts of pepper stems; and (3) carrying out daily management after inoculation, recording the disease level of each plant 6 days later, calculating the disease index, and evaluating the disease resistance of pepper varieties to pepper southern blight. The method for identifying the southern blight disease resistance of the peppers is provided for the first time, the inoculation method is simple and convenient to operate, the identification result is accurate and reliable, the disease judgment sensitivity is high, the method is not easily affected by environment and climate factors, morbidity is uniformafter inoculation, result stability is good, the operability is high, and the screening efficiency of disease-resistant materials can be improved favorably.

The invention discloses a water-soluble biological nematicide fermentation method and application. The fermentation method comprises the steps of Sr18 bacterium activating culture, 200L tank fermentation scale up, 5t tank fermentation scale up, concentrated water preparation, powder preparation and the like. The experimental results show that the fermentation process established by the invention is secondary fermentation, and has the characteristics of simple and easy fermentation process control, short fermentation period, low energy consumption, high yield of active products and the like; the prepared concentrated water has strong activity, no toxic side effects, stability and convenient storage, and the shelf life is more than two years; the preparation is convenient to apply, can be mixed with water according to any proportion, and can also be matched with other pesticides. The biological nematicide obtained by fermentation has a specificity effect on prevention of Meloidogyne incognita Chitwood, Bursaphelenchus xylophilus and vegetable root-knot nematode diseases.

The invention discloses a methodfor identifying pumpkin bacterial wilt resistant varieties in the greenhouse seedling stage. The method comprises the steps of (1) cultivating pumpkin seedlings for inoculation, wherein firstly 2-3 the pumpkin seedlings for inoculation in the true leaf stage are cultivated in a greenhouse; (2) inoculating, whereinpumpkin ralstonia solanacearum is inoculated on the pumpkin seedlings for inoculation by a root soaking inoculation method; (3) conducting an investigation method, whereininvestigation is conducted once a week after inoculation, the total number of plants and the number of diseased plants after inoculation of the pumpkin ralstonia solanacearum are recorded, the diseased plant rate is counted, andthe resistance of the pumpkin varieties to pumpkin bacterial wilt is judged. The method has simple operation, short time required and accurate and reliable identification result, is not affected by the field environment, can significantly distinguish thedifference in resistance of different pumpkin varieties to the bacterial wilt, is suitable for the identification and screeningof resistance of large quantities of pumpkin materialsto the bacterial wilt simultaneously, and is beneficial to improving the screening efficiency of disease-resistant materials.

The invention discloses a method for identifying tropical resistance of different banana varieties to No. 4 physiological race of fusarium wilt by using tissue culture seedlings, and belongs to the field of agricultural production and plant protection. The method comprises the following steps: preparing rooting seedlings, preparing an inoculation spore suspension, inoculating pathogenic bacteria, and investigating diseases. According to the method, the pathogenic bacteria are directly inoculated by puncturing leaves of the rooting seedlings in a tissue culture bottle, the tissue culture bottle does not need to be replaced, and the operation is simple; compared with traditional root-damaged inoculation of field plants or greenhouse plants, the method has the advantages that the processes of seedling hardening and plant culture are reduced, the influence of the environment temperature and humidity on the identification result is avoided, and the identification result is accurate and reliable; and the tissue culture seedlings are subjected to disease resistance screening in the indoor tissue culture bottle, the conditions are easy to control, the identification period is greatly shortened, the speed is high, and a large amount of manpower, material resources and space can be saved.