68 results about "Effective strain" patented technology

Methods of predicting earth stresses in response to pore pressure changes in a hydrocarbon-bearing reservoir within a geomechanical system, include establishing physical boundaries for the geomechanical system and acquiring reservoir characteristics. Geomechanical simulations simulate the effects of changes in reservoir characteristics on stress in rock formations within the physical boundaries to determine the rock formation strength at selected nodes in the reservoir. The strength of the rock formations at the nodes is represented by an effective strain (ε_eff), which includes a compaction strain (ε_c) and out-of-plane shear strains (γ1-3, Y2-3) at a nodal point. The methods further include determining an effective strain criteria (ε_eff^cr) from a history of well failures in the physical boundaries. The effective strain (ε_eff^cr) at a selected nodal point is compared with the effective strain criteria (ε_eff^cr) to determine if the effective strain (ε_eff) exceeds the effective strain criteria (ε_eff^cr).

A method to obtain thin (less than 300 nm) strain-relaxed Si_1-xGe_x buffer layers on Si or silicon-on-insulator (SOI) substrates. These buffer layers have a homogeneous distribution of misfit dislocations that relieve the strain, remarkably smooth surfaces, and a low threading dislocation (TD) density, i.e. less than 10⁶ cm². The approach begins with the growth of a pseudomorphic or nearly pseudomorphic Si_1-xGe_x layer, i.e., a layer that is free of misfit dislocations, which is then implanted with He or other light elements and subsequently annealed to achieve the substantial strain relaxation. The very effective strain relaxation mechanism operating with this method is dislocation nucleation at He-induced platelets (not bubbles) that lie below the Si/Si_1-xGe_x interface, parallel to the Si(001) surface.

The invention discloses a method for restoring micro-scale polluted reservoir water by using situ bio-contact oxidation. The method comprises the following steps: adopting fiber and sponge combined ball-type packings which are independently developed as carriers to perform screening, placing high effective strain which is obtained through screening in culture solution 'HS enrichment medium' to perform enrichment culture, then inoculating the strain which is through the enrichment culture in 'HSK culture medium' to perform expending cultivation and prepare biological microbial inoculum, placing packings in the microbial inoculum to perform biofilm formation and obtain biological immobilized packings; connecting the prepared biological immobilized packings with a string to fix the packings around the laboratory patented device water-lifting aerator of the invention and adopting water-lifting aeration-situ bio-contact oxidation to perform bioremediation to the micro-scale polluted reservoir water. The method of the invention can be used to effectively reduce the concentrations of COD, N, P and other pollutants in reservoir water and especially effectively lower the total nitrogen content of the micro-scale polluted reservoir water so as to fundamentally resolve the pollution problem of reservoir water, inhibit the growth of algae and control water eutrophication.

An equal channel angular extruding, twisting and deforming mold for large plastic forming process is disclosed. The mold is provided with a male mold (7) and a female mold, an inlet channel (8) and an outlet channel (9) communicated with a corner of the inlet channel (8) are arranged in the female mold; the inlet channel (8) and the outlet channel (9) have the same cross section; the male mold (7) and the inlet channel (8) are in clearance fit, wherein a section of spiral channel (10) composed of spiral slots and having the same cross section with the outlet channel (9) is arranged in the outlet channel (9). In the technical process of the invention, the corner formed by the inlet channel and the outlet channel provides strong shearing function for deformation, the spiral channel provides a large shearing deformation amount while increasing the inner hydrostatic pressure during the deformation of a workpiece, so that the effective strain is accumulated, the deformation evenness, and the room temperature strength and comprehensive mechanical property of deformed metal material are improved, the high-performance metal material is obtained, the processing cost of metal materials is reduced, and the yield is improved.

The invention relates to a DNA sequence of a fungal strain and a method for identifying variety by means of the sequence. An ITS zone sequence of tremella aurantiabla is shown in SEQ ID NO.1, and an ITS zone sequence of host fungus stereum hirsutum is shown in SEQ ID NO.2. During identification, an ITS zone sequence of a to-be-identified sample is extracted at first and then is respectively compared with the SEQ ID NO.1 sequence and the SEQ ID NO.2 sequence to obtain a result. The method can accurately identify the authenticity of a to-be-identified fungus, and can also carry out accurate identification to artificially cultured yeast-like spore strain of tremella aurantiabla and host fungus stereum hirsutum strain; moreover, the method can accurately distinguish and identify the authenticity and purity of tremella aurantiabla variety or strain, thereby providing a reliable technique for variety identification, protection, strain quality control and effective strain breeding.

The invention provides a method for rapidly screening phosphorus-accumulating bacteria in active sludge, belonging to the technical field of sewage treatment and phosphorus removal. The invention relates to a method for rapidly screening high-efficiency phosphorus-accumulating bacteria in a reinforced biological phosphorus removal system. According to the invention, a reinforced biological phosphorus removal technology is an important phosphorus removal technology in sewage treatment, the phosphorus-accumulating bacteria takes a main removal effect in the technology; and the current strain isolation method has the defects that effect is poor and effective strain number is less. In the invention, a photocopy method coordinated with different culture media is utilized, so that bacterial colony passage is performed in the culture conditions alternating between anaerobism and aerobism; and in the passage process, dyeing with Sudan black and toluidine blue is carried out for observation, white-blue plaque selection is carried out for selecting blue plaque strains to be used as high-efficiency phosphorus removal strains. By using the method, the problems of fussy process, slow screeningand poor pertinence caused by a culture medium and culture conditions are solved, and the high-efficiency phosphorus-accumulating bacteria can be rapidly screened out from the active sludge.

The invention provides a biological seedling raising substrate containing composite microbial flora and a preparation method and application of the biological seedling raising substrate. The biological seedling raising substrate containing the composite microbial flora is prepared by mixing single effective strains of trichoderma guizhouense NJAU 4742, trichoderma asperellum 38 and bacillus megaterium L-69 according to the volume ratio of 1:1-3:1-3. Firstly strains of the trichoderma guizhouense NJAU 4742 and trichoderma asperellum 38 are inoculated into a PDA PDA liquid culture medium for cultivation respectively; strains of the bacillus megaterium L-69 are inoculated into an LB culture medium for cultivation; a bacterial liquid is added into a common seedling raising substrate accordingto the inoculation amount (volume/dry weight) of 5%, the water content is adjusted to 45%, thorough mixing is carried out, and placement is performed for 1 day, so that the biological seedling raisingsubstrate containing a single strain is prepared, then uniform mixing is carried out according to the volume ratio of 1:1:1, and placement is performed for 1 day, so that the biological seedling raising substrate containing the composite microbial flora is prepared. The biological seedling raising substrate containing the composite microbial flora can significantly promote the seedling raising effect of tomatoes and cucumbers.

The invention discloses a method for quickly screening taxol-producing endogenetic fungi. The method quickly screens the taxol-producing endogenetic fungi by adoption of key enzyme genes synthesized by taxol as molecular markers and on the basis of the PCR amplification technology. The method designs primers according to conserved regions of 10-Deacetyl Baccatin III-10-O- acetylase genes and C-13phenylalanine side chain CoA acetylase genes of reported yew, performs amplification screening on fungi which is obtained by separation of yew barks in turn, performs fermentation culture on the fungi which can generate the two genes by means of amplification, extracts the taxol, analyzes the taxol of the fungi by HPLC and MS, and finally determines the taxol-producing endogenetic fungi. The invention provides an effective strain separating and screening method and a batch of effective original strains in order to realize replacement of extraction and conversion of the taxol from yew plant tissue by the microorganism fermentation method.

The invention provides a disc-type strain multiplier for amplifying the surface strain of a mechanical part in real time under a multi-axis load and a design method, and belongs to the technical fieldof fatigue life prediction of the mechanical part. The multi-axis strain condition of the surface of the mechanical part is obtained through a disc type strain multiplier mounting foot mounted on thesurface of the mechanical part, and the disc center rubber body of the disc type strain multiplier is used for mechanically amplifying the average strain of the surface of a mechanical part at the covering position of the disc surface by a certain multiple, so that the fatigue life meter mounted on the multiplier can work within an effective strain amplitude range, and the safe and reliable operation of mechanical equipment is ensured.

The invention discloses a method for inducing endophytic fungi of orchid. The method includes: utilizing a seeding cup to replace a seed bag to perform in-situ symbiosis germination of orchid seed and induce effective endophytic fungi. The method solves the problems about seed clot, low germination rate, proneness to being influenced by weather conditions and the like caused during conventional in-situ symbiosis germination of the orchid. The method is simple to operate, convenient to get materials, low in cost and high in seed emergence rate, seedlings in different growing stages can be selected to perform effective strain separation according to requirements, and a new operable way for protecting endangered orchid and culturing seeding is developed.

This invention describes discovery and development of a biological system of plant growth promotion and environmental improvement by carbon sequestration and/or nitrogen utilization by application of a microbial agent, e.g., a highly effective strain of T. viride, particularly strains NRRL B-50520 and/or K5. This strain outperforms the best current strains of Trichoderma used for this purpose available commercially. The highly active products also are expected to increase plant productivity and improve quality of fruits, vegetables, flowers or other plant products. The invention also describes and demonstrates that strain combinations including Bacillus amyloliquifaciens AS2 or AS3, as well as disclosed metabolites, promote plant growth. This is true across monocots and dicots, seed treatments and foliar sprays. In the field plant height, shoot weight, root weight, and photosynthesis (Spad meter readings) were all increased in comparison to the untreated control as well as the leading biological seed treatments. The invention also describes metabolite utilization for enhancing plant growth.

The invention relates to a preparation method of xylooligosaccharide. The xylooligosaccharide is prepared by hydrolysis fermentation of lignocellulosic biomass materials from one or multiple strains of self-produced cellulase and/or hemicellulase. The high effective strains are adopted, enzyme is hydrolyzed by the aid of the self-secreted cellulase and hemicellulase of the strains, the lignocellulosic materials are degraded by controllable liquid deep hydrolysis fermentation, and reparation of the xylooligosaccharide is achieved; compared with the prior art, the preparation method has the advantages of wide material application range, high yield, simple production process and high efficiency.

The invention discloses a quick start method of a denitrification bioreactor. The quick start method comprises the following steps of: 1) separating out a group of sulfur autotrophic denitrifying bacteria from an experimental denitrification bioreactor; 2) putting the sulfur autotrophic denitrifying bacteria obtained in the step 1) in a culture solution for enlarge cultivation; 3) immobilizing the sulfur autotrophic denitrifying bacteria mixture obtained after enlarge cultivation on a carrier by taking activated carbon or ceramsite as the adsorption carrier and inoculating the bacteria into the denitrification bioreactor, thereby realizing quick start of the denitrification bioreactor. The quick start method of the denitrification bioreactor provided by the invention has the following advantages that the mixture of a plurality of sulfur autotrophic denitrifying effective strains is obtained through culture on the basis of experimental study, the optimal condition for growth of the microbial population is found out, and an appropriate carrier is utilized so that the microbial population grows quickly under appropriate growth conditions, and therefore, lots of functional microorganisms can be obtained in short time for inoculation of the sulfur autotrophic denitrification bioreactor; as a result, the time of starting the reactor is greatly shortened.

The invention relates to a measurement and calibration integrated marine fiber bragg grating strain sensor system. The system is composed of a fiber bragg grating strain sensor and a sensor calibration device. Two ends of a fiber bragg grating are fixedly connected with a sensor fixed end and a sensor movable end. The sensor fixed end is fixedly connected with a positioning plate through utilization of a fixed end welding base. The sensor movable end is connected with the positioning plate through utilization of a movable end welding base. The movable end welding base can move front and back along the positioning plate, so a distance between two fixed points of the fiber bragg grating is an effective strain length L. A high-precision differential screw is fixedly connected with the positioning plate through utilization of a screw mounting base. The screw mounting base and the movable end welding base are connected through utilization of a return spring. Through matching of the high-precision differential screw and the return spring, the sensor movable end can be controlled to slide front and back and sliding displacement deltaL of the sensor movable end can be precisely controlled,so a standard dependent variable epsilon=deltaL/L is applied to the fiber bragg grating strain sensor, and the fiber bragg grating strain sensor is mounted or calibrated.

The invention discloses a high-impact piezoelectric accelerometer. The high-impact piezoelectric accelerometer comprises a hollow installing seat, a core is arranged in the hollow installing seat through a compressing ring in a press fit mode and is connected with a cable through a plug, one shock insulation cushion and one insulating cushion are arranged between one end of the core and the compressing ring, and another shock insulation cushion and another insulating cushion are arranged between the other end of the core and the installing seat. Because the shock insulation cushions large in damping are installed at the two ends of the core of the piezoelectric accelerometer, high-frequency large-amplitude acceleration generated by strong-impact waves on a structure can be filtered out, and transverse acceleration transmitted to an acceleration sensor can be reduced so as to achieve the purpose of reducing zero drift. Due to the adoption of a base strain isolation type structure, strain of sensitive elements can be effectively reduced; because the insulating cushions are arranged at the two ends of the core and serve as isolators, the accelerometer can be isolated from an installing face mechanically so that effective strain transmitted to the accelerometer can be reduced and the purpose of reducing zero drift can be achieved.

A production method for an Fe—Ni based heat-resistant superalloy inhibits abnormal grain growth and yields a fine crystal grain structure having an ASTM crystal grain size number of 9 or greater. The production method comprises at least a hot working step in which a material having a prescribed composition is subjected to hot working, wherein the hot working step includes at least a step in which the above material of 930 to 1010° C. is subjected to hot working so that the relation of (effective strain)≧0.139×(effective strain rate(/sec))^−0.30 is satisfied in the entirety of the above material.

The invention discloses a special-shaped blank continuous casting secondary-cooling roll gap adjustment method which includes the steps: (1), dividing four heat-transfer areas between two pairs of pinch rolls in a continuous casting drawing direction of a special-shaped blank, respectively calculating length and heat flux of each heat-transfer area and calculating water density distribution along the circumference of the casting blank section within a water spraying area and area value of the water spraying area; (2), constructing a two-dimensional heat-transfer model and calculating to obtain distribution of temperature of a casting blank at different solidification stages; (3), according to parameters of mechanical behavior under high temperature and phase transformation behavior of steel grades, building a special-shaped blank continuous casting strain model under high-temperature stress and calculating effective strains of the casting blank at different solidification stages; (4), according to the effective strains, calculating instantaneous strain rate of the casting blank so as to calculate and make a secondary-cooling roll gap shrinkage curve of feature positions of the continuous casting blank of the special-shaped blank.The roll gap shrinkage curve provides a theoretical direction to arrangement and adjustment of roll lines during actual production of special-shaped blank continuous casting.The method has the advantages of improving adjustment precision of the secondary-cooling roll gaps and effectively controlling and improving continuous casting quality of the special-shaped blank.

The invention discloses a design method for reducing the discharging quantity of spider cold forging blank. The method mainly comprises a step (1) of calculating difference value delta H between the theoretic discharging quantity H1 and the actual discharge rate H2 according to a detail drawing; a step (2) of building a three-dimensional solid model by utilizing SOLIDWORKS; a step (3) of performing finite element modeling on the spider forming process through DEFORM-3D finite element modeling software to enable the delta H to reduce gradually until the H2 closes to the H1; and a step (4) of performing equivalent stress, effective strain and load displacement curve analysis on an optimized finite element model with the blank quantity of HX and changing technological parameters of a die corner R and the draft angle V to enable molded parts to meet the production requirements. According to the design method, the flow of metal and reasonable forming technology parameters in the spider cold forging modeling can be analyzed accurately, the discharging quantity of the blank is reduced, the microhardness and the strength of the parts after undergoing subzero treatment are improved remarkably, and the parts have good plasticity.

A method which uses a molecular marker technology for identifying Pleurotus citrinopileatus comprises the cultivation and collection of mycelium, the extraction of genome DNA, the establishment of the detection of a SCAR-PCR molecular marker, and the detection of a SCAR-PCR product. The method has the advantages of high sensitivity, less usage of needed DNA, and short detection time, high accuracy, easy judgment, good reproducibility, and the like, compared with conventional morphology detection, antagonistic test, and fruiting test. The method provides an effective strain identification method for the use of Pleurotus citrinopileatus germplasm resources and the registration work of new varieties.