13 results about "Temperature sensitivity" patented technology

The invention relates to the technical field of beauty instrument control methods, in particular to a beauty instrument control method and system. According to the method, skin optical characteristics, biological impedance parameters and environmental parameters are acquired through multi-dimensional data acquisition, and a characteristic data set containing hemoglobin concentration, moisture content, real part of electrical impedance and environmental temperature is generated after preprocessing. Based on the data set, a multi-engine prediction model is adopted to analyze the skin state change trend, and predicted values of the moisture demand, the temperature sensitivity, the barrier function and the microcirculation state are generated. Then, optimization instructions of radio frequency energy, a phototherapy mode, micro-current parameters and temperature control are calculated respectively according to prediction results, and safety and coordination of parameter adjustment are ensured through cooperative verification. According to the invention, through dual-time scale prediction and multi-parameter collaborative optimization, the problem of nursing effect lag caused by environment change and skin state fluctuation of a traditional beauty instrument is solved, and the nursing precision and stability are significantly improved.

The invention belongs to the technical field of textile fabrics, and discloses an intelligent temperature-adjusting phase change microcapsule and a preparation method of a fabric thereof. The phase change microcapsule is prepared from the following components in percentage by mass: 60 to 80 percent of organic phase change material, 6 to 15 percent of N-isopropylacrylamide, 4 to 10 percent of acrylic acid, 1 to 5 percent of polyether surfactant, 2 to 5 percent of urethane acrylate and 2 to 5 percent of initiator. Warp yarn, first weft yarn and second weft yarn containing the microcapsules are woven into the intelligent temperature-adjusting phase-change fiber fabric, the response speed of the phase-change microcapsules is increased through the thermosensitivity of the organic phase-change materials, temperature can be buffered and adjusted in a wide temperature range, the organic phase-change materials cooperate with the temperature-sensitive polymer capsule wall, heat release, warm keeping, ventilation and moisture removal are achieved, and the intelligent temperature-adjusting phase-change fiber fabric is obtained. Inlet of hot air is reduced through heat absorption and cooling, climate and air temperature adjustment is self-adapted, and somatosensory comfort is maintained. In addition, no components irritating to the skin are added in the formula, so that adverse reactions such as sensitization and the like on consumers are avoided.

The present application relates to the field of textile materials, and discloses a method for improving the automatic regulation ability of fabric comfort by means of local plasmonic enhancement effect, comprising the following steps: (1) preparing temperature-sensitive nanogel; (2) loading gold nanoparticles in the nanogel; (3) forming a composite nanogel coating on the surface of the cotton fabric by the dipping method to obtain the fabric with the automatic regulation ability of comfort; the present application first prepares the temperature-sensitive nanogel by emulsion polymerization; then generates gold nanoparticles in the nanogel by in-situ reduction method; finally, the composite nanogel is fixed on the cotton fabric to form a composite nanogel layer on the surface of the cotton fabric; through the temperature sensitivity of the nanogel and the local plasmonic enhancement effect between the gold nanoparticles, the fabric comfort can be adjusted according to the temperature and light conditions of the external environment, and the present application is suitable for outdoor sports in daily life.

Disclosed are a series of polymers having the properties of acid-sensitive degradation and temperature sensitivity and a drug loading composition thereof. The polymers have a structure represented by formula (1) and have the properties of degradation and temperature sensitivity in a physiological environment, that is, the polymers are in a solid state at a temperature below a phase change temperature, and are in a liquid state at a temperature above the phase change temperature, so that the polymers are in a stable state in a low-temperature environment of a storage condition and are in a state of relatively high flowability in a use environment, and thus ensure storage stability and needle penetration during injection while maintaining good drug release properties and degradability. Also disclosed are a preparation method of the polymers and a pharmaceutical composition containing the polymers.

The invention discloses a heart rate variability evaluation method based on temperature change, and relates to the technical field of physiological signal processing and health monitoring. The method comprises the following steps: firstly, synchronously acquiring electrocardiosignals and environment temperature data of a measured object under different temperature conditions; then processing the electrocardiosignal to extract an RR interval sequence, and calculating a group of heart rate variability characteristic indexes; secondly, performing function fitting by taking the environment temperature as an independent variable and the heart rate variability characteristic index as a dependent variable, and constructing a personalized response model reflecting the change of the individual HRV along with the temperature; and finally, based on the model, determining an HRV theoretical reference value at a standard temperature or extracting a temperature sensitivity quantitative characteristic, and comparing the HRV theoretical reference value with a healthy population reference range, thereby realizing accurate evaluation of the autonomic nerve function state or the temperature adaptability. According to the method, by quantifying the influence of the temperature on the heart rate variability, the defect that in the prior art, evaluation is inaccurate in a variable-temperature environment is effectively overcome, and the reliability and applicability of an evaluation result are remarkably improved.

This invention discloses a low-irritation, antibacterial, and repairing dual-effect topical composition for allergic skin problems and its preparation method. The composition is a compound of herbal extracts such as Coptis chinensis and Sophora flavescens, and plant essential oils such as clove oil and tea tree oil. An essential oil phospholipid nano-dispersion is prepared by ultrasonic emulsification of phospholipids, followed by cross-linking with a polysaccharide encapsulation material to construct a double-layer microcapsule structure, and finally spray-dried. The composition exhibits pH-responsive release characteristics, with accelerated release of active ingredients under acidic conditions, and maintains stability and antibacterial activity over a wide temperature range of -18℃ to 100℃. This invention effectively solves the problems of poor dispersibility and easy inactivation due to temperature sensitivity of natural active ingredients through a double-layer encapsulation system, achieving broad-spectrum and highly effective antibacterial activity (antibacterial rate > 99.7%), while maintaining a skin irritation index below 0.15. It combines low irritation with highly effective antibacterial and repairing effects, and the preparation process is simple and controllable, making it suitable for sensitive skin care and personal care products.

The invention discloses a composite material temperature field reconstruction method based on an FBG array and improved interpolation, and relates to the technical field of composite material structure health monitoring, and the method comprises the steps: S1, carrying out the calibration through a constant temperature calibration experiment, and obtaining a measured value and a theoretical value of a temperature sensitivity coefficient; s2, constructing an array type thermal environment simulation and acquisition system; s3, self-adaptive region reconstruction based on working condition characteristics: mapping real-time discrete temperature data into a two-dimensional coordinate grid, and selecting an interpolation strategy to carry out full-field temperature reconstruction according to data distribution characteristics and boundary constraint conditions of a region to be reconstructed; the interpolation strategy comprises an improved linear segmentation interpolation strategy and a three-point sliding window average interpolation strategy; s4, temperature field visualization and error evaluation are carried out; according to the composite material temperature field reconstruction method based on the FBG array and the improved interpolation provided by the invention, the problems of boundary region calculation failure, precision loss, complex nonlinear thermal field fitting distortion and the like in the prior art are solved.

The invention relates to the technical field of biosensing and health monitoring, in particular to an integrated multi-parameter information acquisition sensor and an information acquisition method, and the information acquisition method comprises the following steps: carrying out noise reduction and baseline correction on an acquired original resistance signal to eliminate environmental noise interference; establishing a resolving model based on the respective temperature-sensitive coefficients and pressure-sensitive coefficients of the first measurement unit and the second measurement unit; coefficient parameters are determined through a calibration experiment, and cross calculation is carried out to obtain the body temperature and indirectly obtain a respiratory rate calculation formula; according to the time sequence characteristics of the piezoresistive variable quantity, the respiratory rate parameter is obtained by combining the calculation formula of the body temperature and the piezoresistive variable quantity, so that the collected body temperature data and the piezoresistive variable quantity can construct and form a resolving model, and the requirement for collecting the body temperature and the respiratory rate at the same time is met; the invention also correspondingly discloses a structure of the integrated multi-parameter information acquisition sensor, and the sensor comprises a flexible substrate and a data acquisition module, so as to meet the requirement of space occupation.

The application relates to a cosmetic applicator, comprising a rod, a first applicator, a second applicator and a connecting piece, the rod is fixedly connected to the first applicator, the second applicator is fixedly installed on the first applicator through the connecting piece, the hardness of the first applicator is greater than that of the connecting piece, the hardness of the connecting piece is greater than that of the second applicator, and the material of the first applicator comprises a temperature-sensitive material. The first applicator and the second applicator with different hardnesses are arranged in the applicator, the second applicator has strong material carrying capacity, thus overcoming the defect that the first applicator made of the temperature-sensitive material has weak material carrying capacity, and the material carrying capacity of the applicator is improved.

The invention provides a hydrogen fuel cell system pre-judgment type partition dynamic temperature control device which comprises a cell partition module, a temperature rise analysis module, a temperature drop analysis module and a temperature control module. The hydrogen fuel cell is preliminarily divided into a plurality of units with the same area by the cell partition module; classifying temperature zones; the temperature rise analysis module is used for analyzing the temperature rise coefficient and the temperature rise sensitivity coefficient; classifying the temperature rise areas of the same temperature area; the temperature drop analysis module performs temperature drop area classification of the same temperature area according to the temperature drop sensitivity coefficient; the temperature control module formulates corresponding cooling control for each temperature rise area according to the temperature rise sensitivity coefficient of the temperature rise area; and for each temperature drop area, corresponding temperature rise control is formulated according to the temperature drop sensitivity coefficient of the temperature drop area. The method has the advantages that the temperature is controlled in different regions aiming at non-uniform temperature distribution in the hydrogen fuel cell and temperature sensitivity difference of different regions; accurate temperature management is achieved, and meanwhile the cold start heating requirement is met.

The application relates to the technical field of dam safety monitoring, and discloses a dam displacement detection method based on a sensing system. A two-dimensional rectangular coordinate system is established on a water-facing slope, double-channel reflection FBGs are arranged according to the row and column spacing, the sensitive direction is consistent with the generatrix, the initial wavelengths of the double channels are collected in the benchmark working condition, and the strain and temperature sensitivity coefficients are calibrated, real-time wavelengths are obtained during the monitoring period, and the relative drift is calculated, the axial strain and temperature change of each node are obtained based on the double-channel linear coupling and decoupling, the axial displacement is converted according to the strain and the effective length of the pasting, the node coordinates and the displacement are used as the normalized weight interpolation, a two-dimensional displacement field is constructed, and the spatial derivative is solved, the abnormality is identified according to the gradient module and the uncertainty threshold, the node displacement, the abnormal coordinates and the interpolation parameters are packaged and uploaded according to the period, and a time sequence file is formed.

The invention provides a long-acting temperature-sensitive intraoperative ocular surface protective agent as well as a preparation method and application thereof, the protective agent has a temperature-sensitive intelligent response mechanism: in a room temperature environment, the protective agent is in a low-viscosity fluid state, and can be quickly and uniformly spread on the ocular surface after being dropwise added, so that the use convenience is ensured; after contacting with the ocular surface, the protective agent can be quickly converted into a high-viscosity fluid viscoelastic agent under the triggering of the body temperature of a human body, so that the viscosity of the protective agent on the ocular surface can be remarkably improved, the protective agent is effectively prevented from being washed by surgical flushing fluid or being lost due to movement of eyelids, and the effective protection time of the cornea is prolonged to more than 3 hours; the whole process of most surgical operations can be completely covered, and the corneal dryness injury risk in the operation is fundamentally reduced. The ocular surface protective agent provided by the invention also has the advantages of low cost, simple process and short production period, and the prepared product has stable properties, can significantly reduce the transportation and storage cost, and has significant clinical application value and market prospects.

The invention discloses eye drops containing tosufloxacin tosylate and dexamethasone and a preparation method of the eye drops, and belongs to the technical field of medicines. Comprising the following raw materials in parts by weight: 2-4 parts of tosufloxacin tosylate, 1-6 parts of dexamethasone, 0.4-0.6 part of polysorbate 20, 5-10 parts of a thickening agent, 8-9 parts of sodium chloride, a proper amount of a pH regulator, 0.03-0.04 part of a preservative and 1000 parts of purified water. The preparation method comprises the following steps: constructing temperature-sensitive hydrogel through a thickening agent, embedding suspended dexamethasone particles into the temperature-sensitive hydrogel, and then forming the gel eye drops together with soluble tosufloxacin tosylate. The eye drops have temperature sensitivity, are gel in a contraction state at low temperature, swell due to temperature change after being dropped into eyes, and slowly release dexamethasone particles, so that local excessive administration caused by drug aggregation is avoided, the stimulation to the eyes is effectively reduced, and the use comfort of a patient is improved.