41results about How to "Same conditions" patented technology

The invention relates to a measuring method for determining the relationship between plant transpiration and leaf area, comprising the following steps of: sowing a plant inside an inner cylinder with the plant being corresponding to a seedling emergence hole and a seedling emergence slit, and adjusting moisture to a soil water content until there is no stress for the plant growth; providing an outer cylinder with soil and moisture which are consistent with those in the inner cylinder, and measuring the quality difference of the inner cylinder and the variation of the plant leaf area so as to obtain the relationship between the plant transpiration amount and the plant leaf area. According to the method, a device which can be used comprises the inner cylinder, the outer cylinder and a feed pipe, wherein the inner cylinder is a cylindrical shell with a lid and with the bottom sealed; the lid is provided with the seedling emergence hole; the outer cylinder contains two internal-and-external layered spaces and the seedling emergence slit; the inner cylinder is correspondingly arranged inside the internal space; the seedling emergence slit is corresponding to the seedling emergence holeof the inner cylinder; and the feed pipe is connected to the external space of the outer cylinder. The device provided by the invention has a reasonable structure and can be used to effectively reduce or eliminate the interference of environmental conditions which influence the measuring result. The measuring device is simple and easy to operate with accurate measuring results.

The invention discloses an artificial climate simulation test box, which comprises an environmental gas preparation and humidity control unit and an environmental simulation unit, can regulate and control conditions such as spectral distribution, illuminance, irradiance, air temperature, humidity, wind power, underground water level burial depth, soil temperature and the like in a simulation testbox body, and can realize indoor artificial simulation of a natural environment. An external gas generation chamber is matched with a fin cold and heat source medium temperature control module to realize temperature and humidity regulation and control; frequent starting and stopping, and sequential starting and stopping of electric heating, electric refrigeration and dehumidification equipment areavoided, the adverse effects of residual heat and residual cold left after the equipment is powered off on air temperature and humidity control in a simulation test box body are eliminated, and highprecision and low fluctuation of air temperature and humidity regulation and control in the simulation test box body are guaranteed. Interference of air blowing equipment of a traditional artificial climate simulation box on aerodynamic conditions in the simulation test box body is avoided, and single-variable and combined-variable research on wind power conditions can be achieved.

The invention discloses a production method of melt direct spinning flat polyester industrial filaments. A spinneret plate with special '-' shaped section spinneret orifice is applied. Products are made by tackifying of molten fluid, melt spinning and tension winding molding. By using the production method of melt direct spinning flat polyester industrial filaments, the reaction time is decreased, technological process is effectively lessened, the efficiency is increased, energy consumption is reduced, and the cohesive property is greatly increased on the basis of keeping advantages of common industrial yarn. Because of the approximate rectangle section, the space between yarns is small, the contact area is added, the arrangement is more smooth and compact, and thus the yarn has great raw erectness and high cohesive property, relative good bending rigidity and flexibility. Because of compact arrangement of yarns and increased flatness, the aesthetics after blade coating is greatly increased, the production process is reduced and the production art is simplified.

The invention discloses technology for producing direct spinning terylene industrial filaments after liquid state polycondensation of prepolymer and belongs to the technical field of spinning. The technology comprises the processes of esterification, prepolycondensation, liquid state polycondensation, and spinning, and is characterized by comprising the following steps of: performing prepolycondensation reaction on esterified ethylene glycol and phthalic acid to prepare a melt with the viscosity of 0.3 to 0.4dl / g, and conveying the melt to a liquid state polycondensation kettle for liquid state polycondensation by using a booster pump; and conveying the melt to a spinning beam for spinning through a gear pump, wherein the inherent viscosity of the polyester melt after liquid state polycondensation is 0.85 to 1.05dl / g. By directly conveying the melt into the liquid state polycondensation kettle for polycondensation and performing the production technology of directly spinning the melt,the production technology for producing the direct spinning terylene industrial filaments after the liquid state polycondensation of the prepolymer shortens the process flow, reduces the production energy consumption and production cost, and solves the technical problem of difficulty in conveying the melt simultaneously.

The present invention provides a surgical guidance model, a head-mounted wearable device-assisted surgical navigation system and method, and the head-mounted wearable device includes: an image acquisition module for acquiring image data of a patient's surgical image through the image acquisition device, wherein , the image data includes the surgical guide model set at the patient's surgical position; the image processing module is used to identify the position of the surgical guide model in the image data and the surgical tool position of the surgical tool held by the doctor through image recognition technology. The position of the guide model and the position of the surgical tool are displayed to the doctor together with the preset surgical guide model and the three-dimensional model of the surgical tool and the image data; the positioning and navigation module is used to determine the relative position of the surgical guide model and the surgical tool Whether the preset conditions are met, and if so, the navigation completion information is fed back to the doctor, and the present invention can ensure the correct implementation of the treatment plan.

The invention discloses a scaling and descaling test platform for a pressure equalizing electrode in a cooling water system in a converter valve. The reagent outlet, the reagent replenishment tank is used to provide chemical reagents for the water storage tank, the liquid outlet of the water storage tank is connected to the gas supply tank, and the gas supply tank is used to change the dissolved gas in the liquid transported by the water storage tank, the liquid outlet of the gas supply tank Connect the water quality parameter detection box, the water quality parameter detection box is used to detect the water quality parameters of the liquid flowing through the water quality detection box, the liquid outlet of the water quality parameter detection box is connected to the liquid inlet of the fouling pipe section, and the scaling pipe section is detachably connected with a piezoelectric pole, the liquid outlet of the fouling pipe section is connected to a descaling device, the descaling device is used to reduce the concentration of scale-causing particles in the liquid, and the liquid outlet of the descaling device is connected to the circuit liquid inlet of the water storage tank. The invention has perfect functions and can meet the requirements of scaling or descaling tests under different conditions.