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30 results about "Yield factor" patented technology

Yield factor. [′yēld ‚fak·tər] (industrial engineering) The ratio of the amount of material that results from an industrial process to the amount of material that went into it.

Dredging operation yield prediction model analysis method based on BP neural network

InactiveCN104463359AOvercome the disadvantage of only describing the production process qualitativelyStrong fault toleranceForecastingData informationModelling analysis
The invention discloses a dredging operation yield prediction model analysis method based on a BP neural network. The dredging operation yield prediction model analysis method based on the BP neural network comprises the following steps that (1) data information influencing dredging operation yield factor variables is collected, p influence factors are determined, and a sample matrix is listed, wherein p is a positive integer; (2) pretreatment is conducted on sample data; (3) a network is established, and a training sample and a testing sample are determined; (4) the established network is trained according to the training sample; (5) according to the testing sample, the established network is tested; (6) the performance of the network is estimated by computing the offset condition between a predicated value and a true value. By the adoption of the dredging operation yield prediction model analysis method based on the BP neural network, a nonlinear mapping function from input to output is achieved, a nonlinear relationship is established between input and output, and an established model is high in fault-tolerant capacity and high in prediction speed; theoretical basis can be laid for optimization study of dredging operation yield, and the purposes of high efficiency, high yield and low energy consumption can be achieved.
Owner:HOHAI UNIV CHANGZHOU

Method for testing putrefaction capacity of putrefactive bacteria of fish

The invention discloses a method for testing the putrefaction capacity of putrefactive bacteria of fish, relates to fish preservation technology, and aims to provide a method for testing and quantitatively analyzing the putrefaction capacity of the putrefactive bacteria of fish. The technical scheme comprises the steps of preparing pure bacterial liquid of the putrefactive bacteria, preparing aseptic fish blocks, inoculating, and analyzing the growth rate of the putrefactive bacteria and the generation rate of putrefactive metabolic product. The method is characterized in that: the prepared aseptic fish blocks are soaked in the pure bacterial liquid of the putrefactive bacteria to be tested, the inoculated fish blocks are stored at the temperature of (5+/-0.1) DEG C, and the sensory evaluation, total volatile basic nitrogen (TVBN) test and to-be-tested putrefactive bacteria counting are respectively carried out on the inoculated fish blocks every 24 hours; and the putrefaction capacity of the putrefactive bacteria is represented by the quantity of the putrefactive metabolic product (TVBN) generated by unit putrefactive bacteria inoculated into the fish blocks, and a TVBN yield factor (YTVBN/CFU) of the sensory putrefactive point is taken as a quantitative index of the putrefaction capacity of the putrefactive bacteria.
Owner:EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI

Method for enhancing microbe oil fermentation production efficiency

The invention relates to the production of microorganism grease, in particular to a method for improving the fermentation production efficiency of the microorganism grease which inoculates the seed of microzyme for generating grease into a fermentation liquid and adds an alcohol compound during the period of fermentation; the concentration of the alcohol compound in the fermentation liquid is 0.01 to 5.mM; the adding time of the alcohol compound is 0 to 40 h after the fermentation liquid is inoculated; after the concentration of the total reducing sugar in the fermentation liquid is reduced to be below 1g/L, the culturing is stopped; the mycelium is concentrically collected and is extracted by an organic liquid to obtain the microorganism grease; compared with a contrast group without adding the alcohol compound, the biomass of the mycelium, the grease content and the increasing rate of the fat yield factor respectively achieve 0.6 to 5.7 percent, 0.2 to 7.4 percent and 1.4 to 13.2 percent; the fermentation time is shortened by 2.8 to 27.1 percent. The method of the invention is really effective, is simply carried out and is a novel method which shortens the fermentation period, enhances the utilizing capability of the microorganism to a substrate and improves the production efficiency of the microorganism grease.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Three-dimensional ecological bearing capacity evaluation method, terminal equipment and storage medium

InactiveCN110633884AEasy to manageResourcesEcological deficitTerminal equipment
The invention relates to a three-dimensional ecological bearing capacity evaluation method, terminal equipment and a storage medium, and the method comprises the steps: setting a balance factor for measuring the difference of productivity of different land types, and calculating the ecological footprint of a to-be-measured region according to the balance factor of each land type; setting a yield factor for measuring the productivity difference between different regions, and calculating the ecological bearing capacity of the region to be measured according to the balance factor and the yield factor of each land type; calculating a three-dimensional ecological footprint according to the ecological footprint and the ecological bearing capacity; setting a plurality of science and technology factors for evaluating the ecological bearing capacity strength, and calculating the to-be-three-dimensional ecological bearing capacity according to the ecological bearing capacity and the science andtechnology factors; and according to the three-dimensional ecological footprint and the three-dimensional ecological bearing capacity, judging the condition of the three-dimensional ecological bearingcapacity of the to-be-detected area. According to the method, the problems existing in an existing model are solved, and the ecological bearing capacity and the ecological deficit can be more truly calculated and analyzed.
Owner:INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI +1

Method for evaluating macroscopic residual stress of steel wire

The invention discloses a method for judging the macroscopic residual stress level of a steel wire by utilizing the change rule of the instantaneous tensile elasticity modulus of the steel wire along with tensile stress. According to the method, a function relationship between the yield ratio (yield factor) on the cross section of the steel wire and the instantaneous elastic modulus of the steel wire is established, and the macroscopic residual stress level of the steel wire and the yield ratio on the cross section under a certain nominal tensile stress can be calculated by measuring the instantaneous elastic modulus of the steel wire. The method comprises the steps of A, loading a tensile steel wire by stages by using a tensile testing machine; B, drawing an E-sigma relation curve of the load secant elasticity modulus of each level and nominal stress; C, determining the tensile elastic modulus ET of the steel wire in a residual-stress-free state, the nominal stress [sigma]1 for starting to yield in a section part area and the yield stress [sigma]Y of the whole section according to the E-sigma curve; D, calculating the maximum macroscopic residual stress [sigma]R of the steel wire according to a formula [sigma]R=[sigma]Y-[sigma]1; E, when [sigma] is greater than [sigma]1, obtaining that the tensile stress on the cross section of the steel wire reaches the yield area ratio; and F, modifying a common tensile testing machine and a loading program.
Owner:RES INST OF HIGHWAY MINIST OF TRANSPORT

Method for enhancing microbe oil fermentation production efficiency

The invention relates to the production of microorganism grease, in particular to a method for improving the fermentation production efficiency of the microorganism grease which inoculates the seed of microzyme for generating grease into a fermentation liquid and adds an alcohol compound during the period of fermentation; the concentration of the alcohol compound in the fermentation liquid is 0.01 to 5.mM; the adding time of the alcohol compound is 0 to 40 h after the fermentation liquid is inoculated; after the concentration of the total reducing sugar in the fermentation liquid is reduced to be below 1g / L, the culturing is stopped; the mycelium is concentrically collected and is extracted by an organic liquid to obtain the microorganism grease; compared with a contrast group without adding the alcohol compound, the biomass of the mycelium, the grease content and the increasing rate of the fat yield factor respectively achieve 0.6 to 5.7 percent, 0.2 to 7.4 percent and 1.4 to 13.2 percent; the fermentation time is shortened by 2.8 to 27.1 percent. The method of the invention is really effective, is simply carried out and is a novel method which shortens the fermentation period, enhances the utilizing capability of the microorganism to a substrate and improves the production efficiency of the microorganism grease.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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