16results about How to "Ensure reproducibility" patented technology

The utility model discloses a kind of nanofiber membrane drainage capacity measuring devices, including upper water tank, the upper water tank is used to store test water;The upper water tank is connected with vacuum device by test cavity;The test cavity is used to place nanofiber membrane to be detected;The upper water tank is connected with liquid level control instrument, the liquid level monitoring device is arranged in the upper water tank;The liquid level control instrument, the liquid level monitoring device, the vacuum device are electrically connected with control device;The liquid level control instrument, the liquid level monitoring device and the control device are used to keep constant pressure above nanofiber membrane to be detected;The vacuum device is used to keep constant pressure below nanofiber membrane to be detected, and collect water that permeates nanofiber membrane to be detected.The utility model not only can accurately determine the drainage capacity of hydrophobic nanofiber membrane, but also is suitable for hydrophilic nanofiber membrane, provides reliable basis for the performance evaluation of nanofiber membrane.

The present invention discloses a controlled-release type polymeric ferric sulfate water treatment agent and its preparation method, belonging to the technical field of water treatment functional materials. The water treatment agent consists of polymeric ferric sulfate, an iron ion color indicator, a gel matrix, a cross-linking calcium agent, amino diatomaceous earth, a pore-forming agent and an inert filler. The preparation method includes: first preparing a network gel, then preparing soft materials, and finally obtaining the product through pill-making and drying. The present invention realizes the slow release and controllability of polymeric ferric sulfate, and the color indicator can directly reflect the consumption state of polymeric ferric sulfate, facilitating storage, transportation, dosing and recovery.

The invention relates to a gear, a wind generating set and a gear design method, the gear has a main rotation direction, from the cross section view of the gear, a tooth groove of the gear is provided with a working face side, a first tooth profile, a first tooth root transition curve, a second tooth profile and a second tooth root transition curve, the non-working face side is located behind the working face side in the main rotation direction, and the non-working face side is provided with a second tooth profile and a second tooth root transition curve which are connected; wherein the first tooth profile and the second tooth profile are symmetrically arranged relative to a symmetry plane, and a preset distance exists between the connection point of the first tooth root transition curve and the second tooth root transition curve and the symmetry plane. And the connection point of the first tooth root transition curve and the second tooth root transition curve is closer to the second tooth profile than the first tooth profile. According to the technical scheme, the bending fatigue strength of the working face side of the gear can be improved while the size of the gear is not increased.

The invention provides a flax roving scouring and bleaching process which comprises the following steps: 1, loading flax roving into a creel with a Teflon coating in a loose uniform winding manner, and controlling the total yarn loading amount to be 75 + / -5% of the effective volume of a main scouring and bleaching pot; 2, soft water is injected into a saucepan according to the liquid ratio of 1: 10-1: 15, the temperature is increased to 65-75 DEG C, a nonionic penetrant is added, the creel in the step 1 is hung into the saucepan after operation is conducted for 5 minutes, heat preservation operation is conducted for 25-35 minutes in a positive and negative circulation alternating mode, and after waste liquid is discharged, normal-temperature soft water is used for washing twice in an overflow mode, and washing is conducted for 10 minutes each time; 3, formic acid and a metal ion chelating agent are added into a main pot, water is added till the liquid ratio is 1: 12, a circulating pump is started, the temperature is increased to 50-55 DEG C, the washed creel is put into the main pot, the temperature is kept, the stirring reaction is conducted for 20-30 minutes, the pH value is monitored and maintained to be 3.0-3.5 in the process, and after pickling is completed, waste liquid is pumped into a neutralization pool to be treated after being filtered through a stainless steel filter screen.

The invention belongs to the field of analytical chemistry, and provides a method for simultaneously determining 10 tryptophan metabolites through liquid chromatography-mass spectrometry, differentiated pretreatment schemes are designed aiming at different biological matrixes such as excrement, serum, colon tissue and NCM460 inflammatory cells through a liquid chromatography-tandem mass spectrometry technology, matrix interference is effectively eliminated, and the method for simultaneously determining 10 tryptophan metabolites through liquid chromatography-mass spectrometry is provided. A quantitative analysis method with high sensitivity and high selectivity is established; the method is successfully applied to an ulcerative colitis (UC) rat model and a lipopolysaccharide (LPS)-induced NCM460 inflammation model, and a technical means is provided for revealing a metabolic regulation mechanism of medicine intervention on UC; the method solves the technical problem that various metabolites in a tryptophan metabolic pathway are difficult to detect in the prior art, is suitable for metabolic mechanism research, drug intervention effect evaluation and large-scale detection of clinical samples of inflammatory bowel diseases such as UC, and provides a technical basis for systematic research of a tryptophan metabolic network.

The application discloses a household intelligent electric baking pan and a use method thereof, and belongs to the technical field of intelligent kitchen appliances. The household intelligent electric baking pan comprises the following steps: S1, an upper disc and a lower disc and a flexible hinge are arranged, and an annular waveguide type ultrasonic array is arranged on the edge of the lower disc; S2, food materials are placed, and the pre-tightening force of a spring is adjusted to make the upper disc flexibly contact the surface of the food materials; S3, heating is started, a heat field is modulated through an independent high-frequency duty cycle, and internal heat flow of the food materials is directionally guided; S4, ultrasonic assistance is started, and micro-vibration is conducted by using an annular array standing wave, thereby breaking a steam film effect and improving efficiency; and S5, an acoustic impedance feedback signal is acquired in real time, and doneness is determined according to signal mutation characteristics and cooking is stopped. The application realizes self-adaptive optimization of micro-environment pressure during cooking.

The invention discloses a wide-working-condition and high-stability two-phase experiment circulating system and a testing method thereof, and relates to the field of electronic device heat management, and the experiment circulating system comprises a pumping unit, a flow control and pressure stabilization unit, a pressure control unit, a temperature control unit, a condensation unit and a data acquisition unit. According to the experimental system, a wide-working-condition and high-stability two-phase flow cycle test environment is realized through cooperation of the pumping unit and the flow control and pressure stabilization unit, the flow heat exchange performance of the two-phase flow heat exchanger at different inlet flows, supercooling degrees and dryness can be actually tested, and multi-dimensional data such as temperature, pressure and flow state of each key node in a loop can be monitored in real time; the comprehensive performance of the heat exchanger is completely reflected, and experimental basis and design reference are provided for operation of a two-phase flow cooling system of an electronic device and optimization design of the heat exchanger.

The balanced oil tank pressure solenoid valve of the present application discloses a solenoid valve, which comprises an upper valve body, a middle valve body and a lower valve body, the inner cavity of the upper valve body is communicated with the inner cavity of the middle valve body, the communication part forms a sealing surface through a sealing assembly, the bottom end of the upper valve body is provided with a flange in contact with the sealing surface to form a first channel; the inner cavity of the middle valve body is communicated with the inner cavity of the lower valve body to form a cavity, a solenoid valve is fixed in the cavity, the solenoid valve is fixedly connected with the sealing assembly for driving the sealing assembly away from the upper valve body to open the first channel; the middle part of the sealing assembly is provided with a sealing guide rod, the sealing guide rod comprises a sealing joint, a guide rod and a small diameter spring, the bottom end of the sealing joint is provided with a flange in contact with the sealing surface to form a second channel, the guide rod is connected with the solenoid valve through a locking part after passing through a through hole, the locking part compresses the small diameter spring to make the second channel in a sealed state. The sealing mode is improved, and the overall sealing performance is improved.

The application provides a low-temperature high-conductivity polyether electrolyte and a preparation method thereof. The polyether crosslinking network is formed by crosslinking polyethylene glycol monomethyl ether methacrylate and polyethylene glycol diacrylate, tri(pentafluorophenyl)borane and lithium salt are introduced to form a borane-lithium salt complex system, the molar ratio of lithium ions to borane is accurately controlled to be 1:0.02-0.20, and the acetonitrile complexing-vacuum desolventizing-in-situ polymerization curing process is used, so that the high-purity thin film electrolyte with the ion conductivity ≥1*10 ‑4 S / cm, residual acetonitrile ≤500 ppm and moisture ≤1000 ppm at low temperature is realized, technical problems that the low-temperature conduction capacity decreases when the crosslinking modulus of the traditional polyether electrolyte is improved, the processing window of the high-lithium salt system is narrow, and the interface stability of residual solvent and moisture is difficult to consider are effectively solved, and the low-temperature performance, processing stability and wide solid-state lithium battery application prospect are excellent.

The invention relates to a nano-enzyme sensor for bisphenol A detection, a preparation method and application, and the preparation method of the nano-enzyme comprises the following steps: dropwise adding a CuCl2. 2H2O solution into a 2-methylimidazole solution, uniformly stirring, adding Zn (OAc) 2.2 H2O, uniformly mixing, standing, aging, centrifuging, collecting a precipitation product, and finally washing and drying to obtain the Cu / Zn-ZIF nano-enzyme. The invention aims to provide a nano-enzyme sensor for detecting bisphenol A as well as a preparation method and application of the nano-enzyme sensor, so that efficient detection of bisphenol A is realized.

The embodiment of the invention provides a wheat and cotton double-harvest planting method based on two-season reuse of a drip irrigation belt and a mulching film. An irrigation and coverage system which can be continuously reused in wheat and cotton crops is constructed. According to the system, agricultural machinery is modified, 10 rows of wheat and 3 rows of cotton are planted on each 205cm mulching film, and 3 or 4 drip irrigation belts are laid under the mulching film; wheat row spacing is set to be different, cotton is planted at equal row spacing, and cotton semi-precision or precision seeding is carried out at a wheat reserved row spacing center line by using a seeding machine without parts such as a paving film and a paving belt; the whole growth period follows a water and fertilizer cooperation strategy of wheat management priority and cotton life-saving management; when wheat is harvested, a special harvester additionally provided with a protection plate is adopted. The mulching film and the drip irrigation belt can be used in two seasons at a time, the production cost is remarkably reduced, the environmental pollution is reduced, the contradiction of grain and cotton land contention is effectively solved through the precise agricultural machinery and agricultural technology fusion technology, and the cooperative high yield of grain and cotton is guaranteed.

The present application relates to the technical field of data processing, and more particularly to a standardized management method, device and equipment and storage medium, which gets rid of the subjective limitations of traditional manual on-site inspection, realizes objective quantification and accurate determination of compliance audit through the combination of a clear multi-step data preprocessing process and a specific algorithm, and ensures the sustainability, traceability and reproducibility of standardized management with the help of a hierarchical classification periodic reminder mechanism and a full-dimensional data management library; the method not only solves the core technical problems such as lack of standard landing monitoring, isolated execution, low efficiency, subjective and fuzzy audit results and the like in the existing management mode, but also significantly reduces the labor cost and time cost of standardized management through process optimization and algorithm empowerment, effectively shortens the single batch audit time, improves the accuracy of the audit results, and improves the fairness and accuracy of the audit results, providing systematic technical support for brand image standardization and operation efficiency optimization.

This utility model relates to the field of PTLC drying technology, and more particularly to a PTLC drying and display tank, including a tank body and a tank cover, with the tank cover covering the open end of the tank body; the tank body is provided with a first light-transmitting surface; the tank body is provided with a support structure for supporting the PTLC plates for display and a desiccant container for storing desiccant. This utility model enables in-situ observation without opening the cover through the first light-transmitting surface; the desiccant container stores desiccant, facilitating directional humidity control of the desiccant, and isolating the desiccant from the PTLC plates to prevent desiccant contamination of the PTLC plates; the tank cover seals the tank body to isolate external moisture, ensuring that the PTLC plates complete drying in a stable low-humidity environment, ensuring separation purity and reproducibility.

The present application belongs to the technical field of carbon fiber surface treatment, and particularly relates to a cross-linked polymer modified carbon fiber, a preparation method and a composite material. In view of the problem of insufficient interface bonding force of the existing polyaryl sulfone / ketone thermoplastic sizing agent and carbon fiber, the core of the present application is to apply polyaryl sulfone / ketone derivatives with electrochemically cross-linkable active groups in the main chain or side chain to the technical field of carbon fiber surface treatment, and to construct a three-dimensional network structure coating combined by covalent bonds in situ on the surface of carbon fiber through one-step or two-step electrochemical cross-linking technology. The method realizes firm anchoring of the coating and the carbon fiber, and can significantly improve the interface load transfer efficiency and interlaminar shear strength of the carbon fiber / polyether ether ketone composite material. The process condition of the present application is mild, the parameters are easy to control, the post-processing is convenient, and the present application meets the requirements of green manufacturing and has significant advantages in large-scale production.

The invention belongs to the technical field of material analysis, and provides a method for rapidly detecting the migration quantity of chloropropanol compounds in cigarette paper, which comprises the following steps: carrying out a water phase migration experiment on a cigarette paper sample to be detected to obtain a migration liquid; adding deuterated chloropropanol into the migration liquid, mixing with an internal standard stock solution, and carrying out salting-out auxiliary liquid-liquid extraction, dehydration purification and nitrogen blowing concentration to obtain a liquid to be detected; a gas chromatography-tandem mass spectrometry method is adopted to measure the to-be-measured liquid, a chromatographic column is an ultra-high inert bonded polyethylene glycol capillary chromatographic column, and data are collected in a multi-reaction monitoring mode; the migration amount of the chloropropanol compounds in the sample is calculated through an internal standard method, and the chloropropanol compounds comprise 1, 3-dichloro-2-propanol and 3-chloro-1, 2-propylene glycol. The method does not need a derivatization step, is high in detection accuracy, and can realize rapid detection and batch analysis.

The invention discloses a Snesim modeling-oriented search tree mixed query acceleration optimization method and device, and the method comprises the steps: obtaining a training image and a data template, constructing a search tree based on a Snesim method, constructing a reverse auxiliary retrieval structure to establish a mapping relation between a data event attribute value and a search tree node, and obtaining a data event attribute value; the simulation progress is used as a strategy switching index, a reverse query strategy is adopted in the initial simulation stage with the progress smaller than a preset threshold value, and redundancy of search tree traversal is reduced; and switching back to the efficient traditional forward query strategy in the simulation middle and later periods of which the progress is greater than or equal to the preset threshold value. According to the method, the evolution process of condition data from sparse to dense can be dynamically adapted, the search and query time is remarkably shortened, the calculation efficiency and speed of Snesim modeling are greatly improved on the premise of ensuring the reproducibility of geologic structure features, and an effective optimization scheme is provided for large-scale geologic modeling.