42results about How to "Does not affect the experimental results" patented technology

The invention relates to a print field mark false-proof method, based on digit watermark technique, wherein the mark image is embedded with watermark false-proof information, which comprises: 1, using self-adaptable watermark strength to embed two-dimension random copy watermark into the idle field of original mark image, to generate false-proof mark image; 2, using false-proof mark image and one-dimension Ladon transformation to generate self-registration template, to be used to calculate self-registration geometrical deformation parameter at the mark false check step; 3, generating two-dimension random copy watermark which is same as in step 1; the image collector collects tested mark image, extracting self-registration parameter; based on self-registration parameter, synchronizing the two-dimension random copy watermark; based on synchronized watermark and tested mark image, using self-related judgment, to realize the recognition of real and false mark.

A method for preparing protectant of brittle fiber breaking end in mechanical test includes using white oil, water, wetting agent and emulsifier as main composition then carrying out water phase preparation, oil phase preparation and two phase mixed emulsification on water ¿C in- oil latex for obtaining protectant of breaking end.

The invention discloses a steroid environment endocrine disturbing chemicals hydroxyl group / keto group synchronous derivatization method of steroid environment endocrine disturbing chemicals (oestrone, 17 beta-estradiol, 17 alpha-ethinyl estradiol, estriol and progesterone). The method comprises the following steps: first fetching standard mixed solution containing the steroid environment endocrine disturbing chemicals and internal standard and introducing high-purity nitrogen at normal temperature so as to dry the standard mixed solution; and adding derivatization reagent prepared from N-methyl-N-trimethylsilyl trifluoroacetamide, iodotrimethylsilane and dithiothreitol based on a proportion of 1,000 muL:5 to 10 muL:5 mg and reacting at 20 to 60 DEG C for 5 to 10 min so as to obtain the derivatization product shown in figure. The method has the advantages of simple and time-saving operation, low energy consumption and cost and the like. The hydroxyl group and the keto group can be derivatized synchronously, the linear correlation among the derivatization products is good, and the detection limit of instrument can reach 0.01 to 1 pg / mu L. The method can be used for the GC-MS detection of the steroid environment endocrine disturbing chemicals in samples such as water, bottom sediment, organisms and the like.

The invention discloses an improved fume hood, belongs to the field of experimental equipment and aims at solving the technical problem that toxic substances produced by the traditional chemical experimental table harm the safety of experimental personnel. According to the technical scheme of the invention, the improved fume hood comprises a left side plate, a right side plate, a baffle and a workbench, wherein the left side plate and the right side plate are installed at the left and right ends of the workbench respectively; the baffle is installed between the left side plate and the right side plate; a glass door and a diversion plate are arranged on the front and back sides of the baffle respectively; the left side plate, the right side plate, the baffle, the workbench, the glass door and the diversion plate enclose a cavity; the gas suction end of an exhaust blower extends into the cavity; the exhaust end of the exhaust blower extends out of the cavity; an air outlet of an air blower is formed in the cavity; and an air inlet of the air blower is formed outsides the cavity. The improved fume hood has the beneficial effects that interference on vision of the experimental personnel is reduced, the personal safety of the experimental personnel is ensured, and an experimental result is not influenced.

The invention relates to a method for measuring migration loss of a plasticizer in a high impact PVC (polyvinyl chloride) pipe material. The method comprises the following steps: (1) blanking three sample strips on the PVC pipe material to be measured through an all-purpose sampling machine, accurately weighing the initial weights of the three sample strips, and respectively recording the initial weights to be m1, m2 and m3; (2) putting each sample strip between two active carbon adsorption sheets, aligning the axis center of each sample strip to the axis centers of the active carbon adsorption sheets to obtain three samples forming an interlayer structure; (3) sequentially and horizontally putting the three samples between two glass sheets, putting a counterweight with the weight of 5Kg on the glass sheets; (4) putting the accumulated glass sheets which are obtained in the step (3) and used for testing into a xenon lamp aging box; (5) starting the xenon lamp aging box and adjusting the temperature of the aging box to be 70 DEG C and starting experiment, after 24h, taking out the sample strips from the xenon lamp aging box, accurately weighing the final weights of the sample strips, and respectively recording the final weights to be m1', m2' and m3'; (6) calculating the weight loss so as to obtain the migration rate of the plasticizer. The method is simple and practical, and high in accuracy.

The present invention disclosed a large -scale lifting and uniform flat plate electrode system and its method. This device includes: insulators, middle frames, steel wire ropes, flat plate electrodes, guided pulleys, tablet electrode lifting subsystems, power supply system;At the top, the other end is solid to the middle frame, the middle frame is fixed with the wire rope, and the wire rope passes through the tidal electrode -to -top -linked guide pulley, and it is solid with the tablet electrode lifting subsystem.The present invention can realize the automatic lifting of the large tablet electrode system, which can improve the efficiency of lightning experiments and ensure the safety of experiments.

The invention relates to a method for characterizing the pore size of a microporous membrane. The method includes the following steps: (1) Artificially modulating spherical SiO with a normal particle size distribution 2 Microspheres are configured into 10wt% suspension; (2) microporous membrane filters this suspension to simulate the raw water experiment; (3) adopts a laser particle size analyzer to test the particle distribution in the filtrate before and after filtration; (4) Filtered SiO 2 The particle size distribution data is fitted and converted; (5) Finally, the filtrate is dried, and the powder mass change before and after filtration is used as an auxiliary characterization. The present invention is different from the conventional bubble point method, mercury intrusion method and electron microscope photo method, and has the advantages of being closer to the actual use performance evaluation, low cost of consumables, good for the environment and testers, simple and fast test speed, and scientific image of the experimental results. It is very suitable for large-scale and multi-type membrane testing, and is conducive to the promotion of membrane products.

The invention discloses a method for removing a dressing at a tab part of a pole piece for an experiment. The method specifically comprises the following steps of a preparation operation step, a stripping operation step and a post-treatment operation step. The stripping operation comprises the following steps that a, a container is placed on one side of an operation table top, hot water at the temperature of 60-80 DEG C is poured into the container, and the distance between the liquid level of the hot water and the upper edge of the container is 2-3 cm; b, the tab of the pole piece is placed at the lower part, the tab of the pole piece is slowly put into hot water to a specified position, stays for 15-20 seconds and then is taken out; c, the dressing layer on the tab of the pole piece treated in the step b isscraped off by using a plastic hard board; and d, the tab of the pole piece treated in the step c iswiped by using a rag, toilet paper is dipped in a small amount of alcohol, and the two sides of the tab arewiped cleanly. The method can be used for removing the dressing carried by the tab part of the pole piece due to special reasons, and is simple in removal method and suitable for being used in laboratories.

The invention discloses a method and a device of acquiring an experiment design table of an artificial microstructure. The method comprises confirming the number of geometrical parameter factors of an artificial microstructure to be tested, the number of values of each geometrical parameter factor and the parameter values corresponding to each geometrical parameter factor, choosing a left-circulating Latin square uniform design method to build a uniform design table according to the number of the geometrical parameter factors and the number of the values of each geometrical parameter factor, and building and obtaining the experiment design table according to the confirmed values of each geometrical parameter factor and the uniform design table. The method and the device of acquiring the experiment design table of the artificial microstructure can reduce the times of experiments under the condition that an experiment result is not influenced, and the undistorted experiment result is obtained in the experiments of a small number.

The present invention relates to the field of biochemical detection, in particular to a method for detecting the concentration of an enzymatic reaction substrate, comprising the following steps: step 1, adding a substrate solution of known concentration in the detection hole 1 dropwise, and adding the substrate to be tested dropwise in the detection hole 2 solution, the enzyme activity of the reagent contained in detection hole 1 and detection hole 2 is consistent; step 2, set the reaction time, and detect the reflected luminosity or color of the detection hole 1 and detection hole 2 respectively after the set time; step 3, According to the detection result of the detection hole 1 and the built-in different enzyme activity-reaction degree curves, the reagent enzyme activity is obtained; step 4, according to the enzyme activity obtained in the step 3, the built-in different substrate concentration-reaction degree curves are used, according to the described The detection result of the detection hole 2 obtains the concentration of the substrate to be detected. The application of the method for detecting the substrate concentration of the enzymatic reaction of the present invention can reduce or even eliminate the influence of the change of the enzyme activity on the determination of the substrate concentration.

The invention provides an efficient air conditioner performance debugging method and system, and relates to the technical field of air conditioners. The debugging system comprises a condenser, a compressor, a throttling device and an evaporator; the debugging system is characterized in that a first part is detachably connected to a first end of the condenser, and a second part is detachably connected to a second end of the condenser; a first end of the compressor is provided with a first connecting piece matched with the first part; a first end of the throttling device is provided with a second connecting piece matched with the second part; the first part is connected with the first connecting piece; and the second part is connected with the second connecting piece. By improving an outdoorunit of an air conditioner, the condenser can be connected in the system in a detachable manner so that a set of prototype can debug different condenser schemes.

An interactive training platform based on real PLC and computer virtual elevator components, including PLC, computer, single-chip microcomputer signal conversion transceiver module, training junction box; the computer is installed with PLC program development software, and virtual control training component units, virtual Elevator installation unit, virtual elevator running diagram unit software; the platform edits and runs the elevator program on the real PLC, and other elevator components are virtualized on the computer. The virtual components have the same position, status, and connection properties with the PLC terminals as the real ones; single-chip microcomputer signals The conversion transceiver module is connected with the computer and the PLC, so that the PLC terminal signal is synchronized with the status of the virtual elevator components; the training junction box has connection terminals, which correspond to the control terminals of the virtual elevator components, and can be used for PLC control wiring training. The platform can carry out PLC programming, and use virtual elevator components to simulate elevator operation, and complete various scheduled training projects. It has the advantages of small equipment investment and small equipment footprint.

The present invention relates to a large-space full-scale fire site simulation experiment control system and its method. Data acquisition and processing system, altitude marking and image acquisition system, mobile power supply and control host; the mobile power supply and simulated fire source and convection smoke system, temperature data acquisition and processing system, wind speed data acquisition and processing system, altitude marking and image acquisition system It is connected with each other and supplies power to the above systems; the control host has built-in data acquisition sub-module, data storage sub-module and UI display sub-module to realize on-site data processing and control functions. The invention adopts 1‑WIRE bus mode to network the sensors, which has the characteristics of simple and convenient wiring and flexible disassembly, and its transmission data is stable. At the same time, it adopts the flue gas generating device with double-sided air intake to avoid single-sided air intake to heat Smoke has interference problems.

The invention discloses a steroid environment endocrine disturbing chemicals hydroxyl group / keto group synchronous derivatization method of steroid environment endocrine disturbing chemicals (oestrone, 17 beta-estradiol, 17 alpha-ethinyl estradiol, estriol and progesterone). The method comprises the following steps: first fetching standard mixed solution containing the steroid environment endocrine disturbing chemicals and internal standard and introducing high-purity nitrogen at normal temperature so as to dry the standard mixed solution; and adding derivatization reagent prepared from N-methyl-N-trimethylsilyl trifluoroacetamide, iodotrimethylsilane and dithiothreitol based on a proportion of 1,000 muL:5 to 10 muL:5 mg and reacting at 20 to 60 DEG C for 5 to 10 min so as to obtain the derivatization product shown in figure. The method has the advantages of simple and time-saving operation, low energy consumption and cost and the like. The hydroxyl group and the keto group can be derivatized synchronously, the linear correlation among the derivatization products is good, and the detection limit of instrument can reach 0.01 to 1 pg / mu L. The method can be used for the GC-MS detection of the steroid environment endocrine disturbing chemicals in samples such as water, bottom sediment, organisms and the like.