40results about How to "Research results are reliable" patented technology

The invention relates to a culture method for plant seedlings. The plant seedlings are cultured by a ventilated root division culture device, the side surfaces of two culture bowls of the device are in butt joint, a cover plate and a culture plate are arranged on the two culture bowls, culture holes are formed in the culture plate, and vent holes are formed in the two sides of the culture holes. The culture method comprises the followings steps: the plant seedlings of 3 days are taken and cultured in a Hoagland's nutrient solution with the concentration of 50 percent for 2 days then in a Hoagland's nutrient solution with the concentration of 100 percent for 12 days, the plant seedlings growing consistently are taken, the stems of the plant seedlings are wrapped by nutrient cotton and fixed in the culture holes of the culture plate, the roots of the plant seedlings are divided into a group A and a group B, the group A is put into the culture bowl containing the Hoagland's nutrient solution, and the group B is put into the culture bowl containing a nutritional deficiency nutrient solution; the pH values of the nutrient solutions are regulated to 6 at 8 o'clock in the morning and 15 o'clock in the afternoon; the nutrient solutions are changed every other three days; and after 4-12 days, the plant seedlings are taken out. The operation is simple, and the personal errors are reduced, so that the research result is more accurate, the culture time is saved, and the working efficiency is improved.

The invention discloses a culture method for rice seedlings. The rice seedlings are cultured by using a split root culture device; the side faces of two culture bowls of the device are butted; a cover plate and a cultivation plate are arranged above the culture bowls; the cultivation plate is provided with culture holes; the culture method comprises the following steps of: culturing 3-day rice seedlings in kimura nutrient solution with concentration of 50 percent for 2 days; replacing the kimura nutrient solution with the kimura nutrient solution with concentration of 100 percent for 12 days;taking consistently grown seedlings and wrapping stem base parts by using culture cotton; fixing in the culture holes of the cultivation plate; grouping rice seedling roots into equal groups A and B,wherein the group A is placed in the culture bowl containing the kimura nutrient solution, and the group B is placed in the culture bowl containing the culture solution of element deficient; adjusting the pH of the culture solution to 6.0 from 8 a.m. to 15 p.m. each day; and replacing the culture solution after culturing for 3 days, and after culturing to 4-12 days, taking the stems and leaves ofthe rice seedlings, the group A of cultured rice seedling roots and the group B of cultured rice seedling roots. The culture method is easy to operate; the personal error is avoided; the culture timeis saved; and the working efficiency is increased.

The invention discloses a method for optimizing diurnal lighting of an exit section of a long tunnel of an express way. The method comprises the steps of collecting data of tunnel lighting parameters, visual adaptation time and driver pupil area, establishing a driver pupil area and illuminance model, an illuminance and tunnel depth model and a driver visual adaption model, making a three-dimensional curved surface among the driver pupil area, the visual adaptation time and the corresponding environmental illuminance by utilizing software, establishing a function model according to parameters obtained through the curved surface and finally obtaining the relationship among the tunnel exit distance, the vehicle speed and the tunnel optimized illuminance according to calculation. By using the method, not only can the problem of dark adaptation caused by illuminance difference when a vehicle is driven in a nighttime tunnel environment be eliminated and traffic accidents evoked by visual disorder be reduced, but also electric energy consumption of tunnel lighting facilities can be greatly decreased at the same time.

The invention discloses a method for simulating interfacial interaction of aggregation of nanometer matter in a water environment through a computer. The method comprises the following steps that (1) a geometric model of interfaces of the nanometer matter in the water environment is constructed, and physical significance is given to the geometric model; (2) the geometric model is optimized with an energy minimization method, and the structure of the geometric model is made to be more authentic; (3) molecule dynamic simulation is conducted under the thermodynamic parameters identical with an authentic environment by referencing experiment researches, and motion locus files and related computing files of all atoms are obtained; (4) the dynamic features and pivotal roles of the interfacial interaction of aggregation of the nanometer matter in the water environment are researched by simulating the obtained motion locus files and the related computing files. According to the method for simulating interfacial interaction of aggregation of the nanometer matter in the water environment through the computer, the potential pollution effects of nanometer pollutants in the water environment are quantitatively analyzed from the angle of interfacial interaction of aggregation of the nanometer pollutants on the level of the molecule and the atoms, and a theoretical basis is laid for water environment biological safety guarantees and the sustainable development of the nanometer technology.

The invention provides an estuary ecological water requirement estimation method based on the response of shellfish coupled biomarkers and belongs to the field of estuary ecological water requirement calculation. The estuary ecological water requirement estimation method comprises the following steps: selecting a type of shellfish scattered within a wide range as the experimental subjects, setting different salinity regions according to a local actual salinity scope, and taking the normal salinity of the estuary as a control salinity region; throwing equal shellfish to the set different salinity regions, measuring the antioxidant system enzyme activity values of samples collected at different points in time and screening out enzyme activity indexes having remarkable response to salinity change; next, standardizing the well-chosen antioxidant enzyme activity values by use of a novel coupled biomarker response method before coupling and determining the salinity region having remarkable difference as a biological response threshold range; and finally, estimating the biological ecological water requirement by use of the difference value of the biological response threshold range and the normal salinity concentration. According to the estuary ecological water requirement estimation method based on the response of the shellfish coupled biomarkers, the shellfish, namely the species having poor motility, is selected and the interference risk is reduced; meanwhile, the research level is promoted to the molecular level and the accuracy of the estuary ecological water requirement calculation is improved.

The invention discloses an ultrasonic auxiliary filtering membrane damage simulation test device and a test method. An ultrasonic transducer box is vertically positioned at the right side inside a test pool for dividing the inside of the test pool into a left region and a right region; the ultrasonic transducer box can leftwards and rightwards move and is in sealed contact with the test pool; the left side region is vertically provided with a flat membrane; the flat membrane is clamped by a front side clamp plate and a right side clamp plate; a sound intensity probe is arranged at the front wall part of the back side clamp plate; the center part of the ultrasonic transducer box is connected with the left end of a horizontal screw rod in a rolling way; the right end of the screw rod extends out of the test pool through the right side wall of the test pool and is axially connected with a screw nut with teeth in a sleeving way; the screw nut with teeth is connected with a gear through a belt with teeth; the gear is connected with an output shaft of a step motor in a concentric way. On the premise of the fixed ultrasonic output power of each gear, the rotation of the step motor is precisely controlled by combining an MCU (micro control unit) control system; the ultrasonic intensity is changed through changing the distance between an ultrasonic source and the membrane; the effect that the ultrasonic intensity is roughly adjusted at first and is then finely adjusted is achieved; the obtained rest data is more comprehensive.

The invention discloses an electro-hydraulic loading device based on a hydraulic tractor steer-by-wire system. The electro-hydraulic loading device is designed for tractors which are relatively slow in development, and complex and changeable in working environment, and is an indispensable importable part for guaranteeing that developing, designing and performance testing can be effectively conducted on the hydraulic steer-by-wire system. According to the electro-hydraulic loading device, the structural characteristic that a single-side single hydraulic cylinder steering trapezium of the hydraulic steer-by-wire system is positioned frontward is utilized for symmetrically arranging a hydraulic loading oil cylinder (1) and a hydraulic steering cylinder (16) of a tractor on the two sides of the trapezium of the steering system, and the ground lateral resistance borne by tires when the tractor steers is simulated through knuckle abutting. The electro-hydraulic proportion control technology which is widely applied at present is adopted in the electro-hydraulic loading device, the effects that loading force changes continuously, quickly and accurately and loading methods are varied can be achieved, the basic requirements of the hydraulic steer-by-wire system are met, and the electro-hydraulic proportion loading device has certain commonality and is applicable to loading of various vehicle steering systems.

The invention discloses a compound Chinese traditional medicine preparation for inducing immune tolerance and preparing method and application thereof. The compound Chinese traditional medicine preparation comprises 2-30 parts of roots of Chinese thorowax, 3-31 parts of moutan bark, 4-32 parts of radix paeoniae alba, 5-33 parts of radix curcumae and 6-35 parts of liquorice. The above components are prepared according to the proportion, to be smashed, soaked with water, decocted, filtered, centrifuged and dried to be made into capsules, oral liquid, tablets and the like. The compound Chinese traditional medicine preparation can induce generation of DC regs of high-expression CD11b and low-expression HLA-DR/CD86/CD80, the DCregs generated through inducing can effectively inhibit DC-mediated lymphopoiesis and promote secretion of cytokines IL-10; a receptor mice is induced to tolerate the iso-allotransplantation skin; no influence on the motility rate of DC cells and the hepatorenal function of the receptor mice is generated, and the compound Chinese traditional medicine preparation is effective and low-toxic and induces immune tolerance.

The invention relates to a riparian zone lateral undercurrent exchange process simulation device based on dye tracing. The device comprises an organic glass tank main body composed of an organic glass tank component C and an organic glass tank component G which are vertically arranged in a T shape and are internally connected with each other, a water level control assembly and a dye tracing monitoring assembly, wherein the water level control assembly includes a water supply unit and a water discarding unit which are connected with water inlets and water outlets in the side walls of the organic glass tank component C and the organic glass tank component G; and the dye tracing monitoring assembly includes a camera arranged on the front side through a triangular support and transparent viscous graduated scales attached to front side panels of the organic glass groove component C and the organic glass groove component G respectively, and the dye tracing monitoring assembly is used for observing changes of the water level and the undercurrent exchange range and migration tracks of dye tracers. Compared with the prior art, the device has the advantages of non-intrusive monitoring, fine observation in the whole process, simplicity and rapidness in operation, quantitative description of a dynamic process and the like.