250 results about "Activity index" patented technology

The invention relates to a high-early-strength mineral additive for concrete, which is characterized in that the high-early-strength mineral additive consists of the following ingredients which are mixed by mass percent: 30-50 percent of mineral powder, 20-35 percent of pulverized coal ash, 5-15 percent of silicon ash, 5-15 percent of metakaolin, 2-5 percent of sodium sulfate and 1-2 percent of polycarboxylate water reducing agent The high-early-strength mineral additive provided by the invention can be used for concrete prefabricated members, grouting materials, patching materials and the like. When 10 percent of high-early-strength mineral additive is added to replace cement to prepare the concrete, the water demand is small, the early activity index is high, the strength development situation is good, and compared with common cement and mineral additives, the dry shrinkage resistance is improved greatly.

Systems and methods for identifying the presence of a defect in vibrating machinery. An exemplary method comprises analysis of frequency spectrum vibration data of the machine. The method comprises deriving a harmonic activity index based on estimates of the energy associated with the frequency spectrum and the energy associated with the defect's harmonic series. The method may comprise deriving a value K by estimating a value M indicative of the energy of the defect's harmonic series and dividing M by the number of spectral lines corresponding to the defect's harmonic series. The method may further comprise deriving a value R by estimating a value Q indicative of the energy in the frequency spectrum data and dividing Q by the number of spectral lines of the frequency spectrum data. The method further comprises deriving the harmonic activity index based on the estimated K and R. Related systems for executing the methods are also disclosed.

A safety and health information reporting system including a wearable device, a metabolic index calculating part, an activity index calculating part, a safety and health status determining part and a determination result output part. The wearable device is worn by a living body. The metabolic index calculating part calculates a metabolic index which represents energy consumption of the living body, based on a detection signal of the wearable device. The activity index calculating part calculates an activity index representing an activity amount of the living body on a daily basis. The safety and health status determining part which determines a safety and health status of the living body, based on a comparison of the metabolic index and the activity index. The determination result output part outputs a determination result of the safety and health status determining part.

A method of using climate data to determine activity index values for a given activity. One embodiment provides a method of more objectively determining the desirability of an activity based on climate data by determining an activity index value using a weighted-element type analysis. Multiple activity index values may be determined for different time periods and used to provide information useful in comparing the desirability of the different time periods for a given activity. The activity index values may be used to answer questions such as “what is the best month to visit Kingston, Jamaica” and “what is the worst season for allergies in Atlanta.”

The invention discloses an admixture prepared from gypsum activation steel slag and ore powder and high-performance concrete prepared from the admixture. The admixture is prepared by mixing steel slag, ore powder and gypsum according to the weight ratio of (8 to 10):(20 to 22):(1 to 3). The high-performance concrete is prepared from the following ingredients of 300 to 500 parts of gelled materials, 1000 to 1200 parts of stone materials, 600 to 700 parts of sand, 100 to 150 parts of water and 3 to 10 parts of water reducing agents, wherein the admixture accounts for 25 to 35 percent of total amount of the gel material. The gypsum is used for activating the activity of the steel slag; the mutual activation effect between the steel slag and the ore powder is utilized; the activity after the steel slag and the ore powder are mixed is improved; the high-activity admixture is used for replacing partial cement to prepare the concrete; the work performance of the concrete can be ensured; meanwhile, the early stage intensity and the later stage intensity of the concrete can be obviously improved; the activity index of the concrete is improved.

Embodiments of the invention are applicable to the technical field of communication and provide a method, a system and a server for recommending an application. The method comprises: data reported by at least one terminal are received, and the data include static data and first application behavior data collected by the at least one terminal, the static data being used for marking the type of the terminal; activity indices of each application on different types of terminals are obtained according to the first application behavior data; an application list request sent by a first terminal is received, the activity index of each application on the terminal of the same type as the first terminal is queried according to the application list request, and the application with the activity index higher than a preset first activity index threshold is recommended to the first terminal. According to the embodiments, the application recommended to the terminal by a server has the highest activity index. The method is good in compatibility with regard to the terminals.

The invention discloses a mineral admixture as well as preparation and application thereof. The mineral admixture contains superfine solid sulfur ash, the D50 of the superfine solid sulfur ash is 0.5 to 15mum, and the D90 of the superfine solid sulfur ash is less than or equal to 30mum. The invention also provides a preparation method for the mineral admixture. The method comprises the following step of: mixing the superfine solid sulfur ash, fly ash and slag powder, wherein the mineral admixture contains 50-70wt% of superfine solid sulfur ash, 10-30wt% of fly ash and 10-30wt% of slag powder, the D50 of the superfine solid sulfur ash is 0.5 to 15mum, the D90 of the superfine solid sulfur ash is less than or equal to 30mum, the specific surface area is 450 to 1,500m<2>/kg, the 28d activity index is more than or equal to 75 percent, and the 28d self-hardening compressive strength is 7 to 15MPa. Compared with the common fly ash or slag powder in the prior art, the mineral admixture has the advantages that when concrete is prepared, the filling effect of fine particles can be fully exerted, the internal structure of the concrete is optimized, micro cracks produced by dry shrinkage or chemical shrinkage are inhibited to a certain degree, and the durability such as freezing resistance of the concrete can also be improved.

The invention discloses a waste brick superfine regenerated active micro-powder and a preparation method thereof. The micro-powder has a specific surface area of more than 600m<2>/kg and a 28d activity index of more than 70%, and can be used as a mortar and concrete admixture. The micro-powder is prepared by taking waste bricks, which have grain diameters of about 3-10cm and are selected from the building waste generated during a house building removal and construction process, as raw materials, and processing through grinding and composite chemical excitation processes. According to the micro-powder and the preparation method disclosed by the invention, superfine grinding and efficient activation for the waste bricks are realized, and a utilization mode with high additional value is provided for the waste bricks.

The invention relates to a device and method for monitoring physical activity of a person. The device comprises an acceleration sensor for providing acceleration data corresponding to movements of the person, a memory unit capable of storing an activity index value describing cumulative physical activity of the person, and data processing unit capable of being operated in at least a first activity monitoring mode in which the data processing unit is adapted to update the activity index value based on the acceleration data. In addition, the processing unit is, in the first activity monitoring mode, configured to determine if, and to update the activity index value only if, the acceleration data corresponds to walking- and/or running-related movements of the person. The invention allows for robust monitoring of activities that have an impact on fitness and health of individuals and reduce the risk of incorrect activity recordings.

The invention discloses a mineral powder modified by sintering dry desulphurization ash and a preparation method thereof. The 7-day activity index of the mineral powder modified by sintering dry desulphurization ash is more than 80%, the 28-day activity index is more than 100%, the specific surface area is more than or equal to 400 m2/kg, the sulfur trioxide content is less than or equal to 4.0%, the chloride ion content is less than or equal to 0.06%, the loss on ignition is less than or equal to 3.0% and the motility ratio is more than or equal to 100%. The mineral powder is made from the following raw materials in percentage by weight: 95 to 99% of blast-furnace slag powders and 1 to 5% of sintering dry desulphurization ash. The 7-day activity index and 28-day activity index of the modified mineral powder are greatly increased as compared with the common mineral powders, the requirement for specific surface area is reduced, and the energy consumption for milling slag powders can be reduced effectively. When applied to premixed concrete, the modified mineral powder is excellent in durability indices such as carbonization resistance, freeze resistance and chloride ion infiltration resistance, can effectively improve the working performance of concrete and improve the early-stage shrinkage crack resistance of hardened concrete.

The invention relates to a method for quantitatively evaluating activity of a tuyere convolute region. In the method, the depth DR of the tuyere convolute region, the width WR of the tuyere convolute region, the sectional area A of the convolute region, the sectional area B of the adjacent tuyere and the sectional area Sdead of a dead material column are calculated through the basic parameters of the tuyere convolute region of a blast furnace; and the activity index AIR of the tuyere convolute region of the blast furnace is calculated through a formula. According to the method, the defect of mismatch of the original 'blasting kinetic energy' index and the shape characteristic of the convolute region is overcome; the activity index of the tuyere convolute region and the depth of the convolute region basically form a one-to-one correspondence relationship; the active degree and the existing state of the tuyere convolute region and an air-permeating and liquid-permeating channel on the lower part are reflected accurately, reasonably and effectively; and important judgment basis and technical basis are provided for a regulating agent on the lower part of the blast furnace.

An apparatus for quantifying network threat situations includes a traffic analyzing unit to analyze packet patterns of traffics occurring on a target network being monitored to extract one or more suspicious domains. An IP monitoring unit gives security levels among a plurality of security levels to the suspicious domains according to the number of access IPs accessing the suspicious domains. An activity index computing unit computes activity indices for the suspicious domains from activity indices according to the access times to the suspicious domains of the access IPs. An attack amount anticipation unit analogizes an expected amount of attacks for each suspicious domain according to an expected amount of attacks for each zombie computer, the security level and the activity index of the suspicious domain.

The invention discloses a non-calcinated method produced high-activity regenerated mineral admixture by utilizing multiple solid wastes such as waste building mortar, fine grinded steel slag, desulphurized gypsum and waste stone dust as well as a preparation method therefor. The mineral admixture comprises the following components in doped percentages: 32-60% of waste mortar powder, 15-25% of fine grinded steel slag, 4-8% of desulphurized gypsum and 20-35% of waste stone dust. The water demand ratio of the regenerated high-activity mineral admixture is 70-90%; the initial working performance of the concrete can be improved; the activity index is 80-100%; the specific surface area is 350-450 sq./kg; and the mineral admixture has the characteristics of a coagulation time controllability, high early strength, stable volume performance and the like.

The invention relates to a premix of a grouting material. The premix is characterized in that the premix comprises the following components, by weight, 65-90% of ordinary portland cement with the strength level of 42.5MPa or low alkaline cement with the strength level of greater than 42.5MPa, wherein the water demand for normal consistency is less than 25%, and the tricalcium aluminate content is lower than 8%; 2-29.696% of an ultrafine mineral admixture with a specific surface area of greater than 450m<2>/kg, a water demand ratio of less than 95%, and a 28d activity index of greater than 90%; 5-15% of calcium sulphoaluminate; 0.1-1.5% of a melamine water reducer; 0.002-0.2% of a cellulose polymer, an acrylic polymer or polyoxyethylene; 0.1-1.0% of a carbohydrate, a hydroxycarboxylic acid compound and salts thereof, a sulfate, a carbonate, or calcium formate; 0.002-0.1% of vinyl acetate-ethylene copolymerized rubber powder; and 0.1-1.0% of a chromate or a borate.

The invention discloses an air conditioning system, an adjusting method and an air conditioner adopting the air conditioning system. The air conditioning system comprises a control device, an outdoorfresh air processing device and an indoor air processing device. The control device is connected with the outdoor fresh air processing device and the indoor air processing device. The control device is used for controlling the opening or closing of the outdoor fresh air processing device by monitoring the outdoor air quality parameters, and is used for controlling the indoor air processing deviceto carry out optimization processing on indoor air by monitoring indoor air parameters, until the indoor air meets the normal activity index of the user. The air conditioning system solves the problemthat the air conditioning effect of an air conditioning system in the prior art is not ideal, and improves the conditioning effect of the air conditioning effect.

The invention discloses a method for forecasting the occurrence probability of ionospheric scintillation in low-latitude areas of China. The method includes: an ionospheric irregularity intensity CkL inversion method based on an ionospheric scintillation index S4, a probability density distribution model of ionospheric irregularity intensity CkL of low-latitude areas of China which changes with solar activity index Rz, geomagnetic activity index Kp, geographical position, season and time, and an ionospheric scintillation occurrence probability calculation method. The method provided by the invention can calculate the occurrence probability of an ionospheric scintillation event under conditions of designated place, time, solar activity index Rz, geomagnetic activity index Kp, working frequency band, ionospheric scintillation index S4 threshold value and the like according to user demands.

The invention discloses a production method of a novel ureaformaldehyde slow-release nitrogen fertilizer and composite fertilizers of the novel ureaformaldehyde slow-release nitrogen fertilizer. The production method comprises following steps: urea is dissolved in formaldehyde solutions with common concentrations at a urea/formaldehyde molar ratio of 1.5-2.5:1; under alkaline conditions, an obtained mixture is subjected to hydroxymethylation reaction; and then under acidic conditions, methylenenation of an obtained product is realized quickly. According to the preparation method, technical conditions such as molar ratio of urea to formaldehyde are controlled, so that the pure powdery or granular ureaformaldehyde slow-release nitrogen fertilizer with an activity index (AI value) ranging from 40 to 65 is obtained, and the composite fertilizers of the ureaformaldehyde slow-release nitrogen fertilizer can be obtained via traditional composite fertilizer production methods. The production method comprises following characteristics: technology is simple; reaction time is short; heat energy released by reaction is fully used; energy consumption is low; quality of the obtained products is reliable; slow release performance is excellent; particles are uniform; strength is high; caking is not easily caused; and production cost is low.

The invention discloses an inorganic high performance fiber composite material, prepared from the following raw materials in parts by weight: 450-900 parts of cement with the mean grain size of 30-60 mu. m and strength grade not less than 42.5, 180-360 parts of active mineral admixture with the mean grain size of 0.1-60 mu. m, loss on ignition being less than or equal to 3.0 percent, and a 28-day activity index not lower than 90 percent, 70-120 parts of inert admixture with the mean grain size of 0.1-60 mu. m, 850-1250 parts of sand with the continuous grading grain size of 0.16-4.75mm, 25-32 parts of water reducer with a water reducing rate greater than 30 percent, 130-150 parts of water, and 50-120 parts of copper plating end hook-shape steel fiber with the diameter less than 0.20mm and length of 12-14mm. The composite material is relatively low in overall price, uniform in fiber distribution, high in compressive strength and flexural strength, good in tenacity and suitable for being popularized and used in the constructional engineering industry.

The invention discloses a performance adjustment material for activating steel slag at high temperature and the application thereof. The performance adjustment material is prepared by mixing electric arc furnace restored slag, coal slag and starch polymer or poval. The application of the material is as follows: after being mixed, the performance adjustment material and the steel slag chemically react under the action of high temperature so as to improve the hydration and the cohesive activity of the steel slag. The invention utilizes the electric arc furnace restored slag, the coal slag and a small quantity of starch polymer or poval to prepare the performance adjustment material; and the performance adjustment material and the steel slag are mixed and chemically react at the certain temperature so as to improve the hydration and the cohesive activity of the converter steel slag. After reaction, the content of free calcium oxide in the steel slag is lower than 2 percent; and when the specific surface area of steel slag powder ranges from 400 to 500m/kg after activation, the 28d activity index is higher than 85 percent. The activated steel slag powder prepared by the invention can be used as cement admixture or concrete admixture, and can be widely applied to the construction projects of industrial and civil architecture, water conservancy, roads, airports, etc.