31results about "Solid dispersion analysis" patented technology

The viscosity η (in centipoise) of a heavy oil sample is determined according to an equation of the form ln

where T is the temperature of the heavy oil, T_2LM is the logarithmic mean of the T₂ distribution of the sample obtainable from nuclear magnetic resonance (NMR) measurements, c′=1.0±0.05, c″=1.0±0.04, η_g is the glass transition temperature viscosity of the heavy oil and a function of T_2LM, and C1 is a variable which is a constant for the heavy oil and is a function of T_2LM. Both C1 and η_g are considered functions of certain NMR values associated with the heavy oil sample, with η_g and C1 preferably estimated by empirically fitting data to the equations lnT_2LM=a′+b′lnη_g and lnT_2LM=a″+b″C1, where a′, b′, a″ and b″ are constants.

A method for quantitative determination of the permeability and porosity evolution of a porous medium during diagenesis having application to oil reservoir development is disclosed. A diagenesis scenario and an initial structure of the pore network of the porous medium are defined.

A representation of the pore network is constructed by a PNM model. The steps of the diagenesis scenario are determining the ion concentration on the pore and channel walls of the PNM model, for a precipitation or dissolution reaction according to the scenario, and deducing therefrom a geometry variation of the PNM model, the porosity is calculated geometrically and the permeability is calculated from Darcy's law for the modified PNM model; the foregoing steps are repeated according to the diagenesis scenario and a relationship is deduced between the permeability of the porous medium and the porosity of the porous medium during diagenesis.

The invention belongs to the technical field of the quantitative statistical distribution analysis of characteristic chromatograms of microstructures and precipitated phases in metal materials, and relates to a full-view-field quantitative statistical distribution representation method of precipitated phase particles in a metal material. The method comprises the following steps of electrolytic corrosion of a metallic material sample, automatic collection of a characteristic chromatogram of a metallurgical structure, automatic splicing and fusion of the characteristic chromatograms of full-view-field metallurgical structures, automatic identification and segmentation of the precipitated phase particles and quantitative distribution representation of the large-range full-view-field precipitated phase particles. According to the full-view-field quantitative statistical distribution representation method, through establishing a mathematic model, the automatic splicing and fusion of the characteristic chromatograms of the full-view-field large-area metallurgical structures in a characteristic region and the automatic segmentation and identification of the precipitated phase particles are realized; the quantitative statistical distribution representation information of the full-view-field morphology, quantity, size, distribution and the like of plentiful precipitated phases in a larger range is quickly obtained, and the method has the features of being accurate and high-efficiency and large in quantitative distribution representation information quantity, and has much more statistical representativeness compared with conventional single-view-field quantitative image analysis.

A method for detecting suspended discontinuity densities in a material is provided. The method includes transmitting terahertz electromagnetic radiation toward a surface of the material. This radiation is received at an expected location after interacting with the material. The power level of the received radiation is measured and deviation from the expected value is used to determine a suspended discontinuity density gradient in the material. The method can be used with either reflected radiation or transmitted radiation. Embodiments of the method can calculate the index of refraction in the material and correlate this with the suspended discontinuity density of the material.

A method is provided for measuring the agglomerative state of asphaltenes in oil by applying an acoustic signal to the oil, detecting the scattered acoustic energy and using this detected signal to determine the relative particle size distribution of the asphaltene particles in the oil and/or their state of agglomeration. A method for controlling the agglomerative state of the asphaltenes which is based on the acoustic measurement technique is also provided.

The invention discloses a method for obtaining chlorine ion diffusion and combination parameters in a cement-based material. The method only needs a total chlorine ion concentration curve, and can simultaneously obtain a chlorine ion effective diffusion coefficient and adsorption isothermal curve parameters through regression calculation. The method comprises the following steps: obtaining a total chlorine ion concentration distribution curve by a non-steady state diffusion test; trying different combinations of to-be-obtained parameters, calculating to obtain a theoretical total chlorine ion concentration distribution curve; carrying out fitting regression of the theoretical curve and the experimental curve by a nonlinear least square method, to obtain a set of parameter values with the highest fitting degree; calculating the confidence interval of each parameter; and further calculating to obtain an adsorption curve, distribution curves of an apparent diffusion coefficient along with the time and space, and distribution curves of total chlorine ions, combined chlorine ions and free chlorine ions in the time and space. The method not only can obtain the diffusion parameter and the combination parameter, but also can obtain the intervals of the parameters.

Methods and compositions for the preparation of soil samples and the determination of the number of microbes within a soil sample are disclosed. The methods include measuring, solubilizing, bleaching and filtering soil samples and measuring the turbidity of the filtered solution. The turbidity of the sample can be determined by visual inspection of a Secchi disk viewed through the column liquid sample in a transparent tubular cylinder, or by using a cell phone camera and application. Devices and kits for the rapid, cost efficient determination of microbial numbers in the field setting are disclosed. The disclosed devices and methods can also be used for applications other than determination of microbial numbers.

This light scattering technique for size measurement is based on the fact that an illuminated particle (inclusion) serves as a secondary radiation source in a manner which is related to its size. This technique allows for detection of inclusions in the interior of transparent solid media, such as bulk glass. When illuminated with a beam of monochromatic light such as a laser beam as the primary light source, the angular distribution of the scattered intensity originated from the inclusion in the micron to submicron range, is a function of intensity, wavelength and index of refraction. A lens and light trap block the primary light for reaching a detector. The light trap, however, allows the secondary scattered light to reach the detector.

A detection apparatus includes four sets of transmitter and receiver wherein the transmitters are on a first sliding member of a frame and the receivers are on a second sliding member of the frame; and drives for moving the first and second sliding members back and forth. During the movements of the first and second sliding members, each transmitter emits laser beam toward the receiver of the same set by passing through a space above a photoresist-coated optical glass by 100 μm, no signal is generated at the receiver if the laser beam is not blocked, and a signal is generated at the receiver if the laser beam is blocked by at least one of a plurality of particles on the photoresist-coated optical glass.

A system and method for inspecting a grain size of a cast alloy component while maintaining the structural integrity of the cast alloy component is disclosed. The method includes recording a radiographic image of the component, identifying areas of the component to be inspected, and locating one or more lines having a pre-determined length on the radiographic image at an area to be inspected. Then, a total number of intersections with the one or more lines are determined and an average grain size is calculated.

The invention discloses a detection method for the content of nitric acid insoluble substances in a high-purity silver ingot, belongs to the technical field of impurity detection, and solves the problems that an existing detection method for the content of nitric acid insoluble substances in a high-purity silver ingot is likely to cause high detection cost and detection inaccuracy. The high-puritysilver ingot comprises 99.99wt% of silver. The detection method comprises the following steps that: carrying out fusion on the high-purity silver ingot under the atmosphere of protection gas, and carrying out intermittent movement on the high-purity silver ingot in a fusion process; after fusion is finished, cooling to obtain a discharged silver ingot, and forming a foreign matter region and a mirror surface bright region on the upper surface of the discharged silver ingot; and according to a ratio of the area of the foreign matter region to the quality of the high-purity silver ingot, determining the content of nitric acid insoluble substances in the high-purity silver ingot. The detection method disclosed by the invention is convenient and simple, and the waste of the sliver ingot is avoided.

The invention relates to a high-speed railway foundation bed slurry-turning mud-emitting fine particle migration detection device, and belongs to the field of railway slurry-turning mud-emitting detection. The device comprises a sample model box provided with a sample filling cavity, and a liquid inlet is formed in the bottom, corresponding to the sample filling cavity, of the sample model box; the loading mechanism is used for loading an impact load into the sample filling cavity; the water supply system feeds liquid into the sample filling cavity in the vertical direction through the liquidinlet; the plurality of collecting guide pipe are arranged at intervals along the vertical direction, each collecting guide pipe is horizontally arranged, and each collecting guide pipe is provided with a plurality of collecting holes at intervals along the horizontal direction; a reversing switch assembly is arranged on the collecting guide pipe and used for opening and closing the collecting holes, so that only one of the collecting holes in different positions is conducted; and according to the scheme, not only can the migration situation of the slurry-turning mud in the vertical directionbe detected, but also the migration situation of the slurry-turning mud in the transverse direction can be detected, and the influence of the boundary on the slurry-turning mud in the test process canbe reflected from the side face, so it is guaranteed that the migration result of fine particles of the slurry-turning mud in the test is relatively accurate.

Methods and devices are provided to measure segregation in solid particulate mixtures. Light energy is projected through a transparent barrier and reflected off a surface of a mixture volume. The constituent fraction in the mixture is determined by analyzing the mixture reflected light as a combination of the constituents' known reflected light spectral contents and intensities. This is accomplished at multiple surface locations to provide constituent fraction data over the mixture volume surface.