38 results about "Volumetric density" patented technology

A system is described for collecting, filtering and removing dirt, debris, detritus, active organic materials, chemicals and toxins from water in fish ponds and general aqua-culture applications. This system includes a filter tank with supporting base containing biological filtration media, a multi-port valve, a strainer, a diffuser head, and a quick drain assembly. The filter tank is fabricated using transparent material allowing for visual inspection of the mechanical and biological activities inside the filter tank. The strainer and diffuser head are slotted so as to capture debris, retain filter media, and maintain unrestricted water flow. The quick drain is a vertical tube covered by drainage slots. The top end of the tube is capped. The bottom end of the tube extends through the filter tank wall to the exterior where a drain valve is attached. The biological filtration media are hollow plastic cylindrical structures with ridges on the external walls and free-standing fins on the internal walls that provide a high surface area-to-volume ratio and thus can support a high volumetric density of naturally occurring heterotrophic bacteria.

A method of generating a density enhanced model of an object is described. The method includes generating a customized a model of an object using a pre-defined set of models in combination with at least one projection image of the object, where the customized model is formed of a plurality of volume elements including density information. A density map is generated by relating a synthesized projection image of the customized model to an actual projection image of the object. Gains from the density map are back-projected into the customized model to provide a density enhanced customized model of the object. Because the density map is calculated using information from the synthesized projection image in combination with actual projection images of the structure, it has been shown to provide spatial geometry and volumetric density results comparable to those of QCT but with reduced patient exposure, equipment cost and examination time.

A scalable data storage device which includes non-volatile memory uses a networked bus system which can be employed on a single memory storage chip level or in a multi-chip package (MCP). The scalable data storage device uses data routing modules which are adapted to store incoming data and send outgoing data thereby providing decoupling of the networked buses. This arrangement enables significantly higher data transfer rates, surpassing DRAM SSDs at a fraction of the size and cost, provides increased volumetric density (1 TB in less than 1 cubic inch), and permits concurrency of operations. The scalable data storage device can be engineered to have a rewrite capability of over 500 times that of Flash RAM and can scale down to 8 bits and up to exabytes, yottabytes and beyond. The scalable data storage device may be used in a wide range of applications from large data centers to small consumer electronic products.

A method is provided for evaluating a geological formation which integrates well data and high resolution computed tomography of rock samples thereof. Relationships are determined for a formation between a formation property, such as an elastic property, and at least one of photoelectric effect index (PEF), effective atomic number (Zeff), and bulk density (RHOB), using well data, and tomographic imaging is used to determine at least one of the latter mentioned properties (PEF, Zeff, RHOB) at higher resolution, which can be used in the relationship to determine a corresponding formation property. This affords an opportunity to develop formation property data for more challenging formations to evaluate, such as thinly laminated formations or others. Computerized systems, computer program products on non-transitory computer usable storage media, and programs for performing the methods are also provided.

A hexagonal boron nitride (h-BN) powder is disclosed in which primary particles of the powder exhibit a ratio (D / d) of long diameter (D) to thickness (d) in a range of 5 to 10. Agglomerated particle bodies made of the primary particles have an average particle diameter (D50) in a range of 2 μm to 200 μm, inclusive, and the powder has a bulk density in a range of 0.5 g / cm3 to 1.0 g / cm3. In an exemplary method for producing the h-BN, boron carbide is nitridizated in a nitrogen partial pressure of at least 5 kPa at 1800° C. to 2200° C., inclusive. B2O3 (or precursor thereof) is added to the nitridization product to produce a mixture. The mixture is decarbonized in a non-oxidizing atmosphere at a 1500° C. to 2200° C., inclusive. The decarbonization product is pulverized and subject to particle-size classification, yielding H-BN powder. The method includes a depressurizing step, performed at 100 kPa or less either during nitridization or after decarbonization.

One example is a betavoltaic cell that has been fabricated using a semiconductor that includes, but is not limited to, Silicon Carbide (SiC), Silicon (Si), Gallium Arsenide (GaAs), Indium Gallium Arsenide (InGaAs), Gallium Nitide (GaN), Gallium Phosphide (GaP), or Diamond, and uses through wafer via holes or other fabrication techniques to form both positive (+ve) and negative (−ve) contacts on the front and back sides of the cell. In another example, several of these cells with +ve and −ve contacts on the front and back sides of the cell are arranged vertically and / or horizontally to form customized parallel and / or series combinations that produce a close packed, energy dense betavoltaic composite unit, with increased power outputs relative to a single cell. In another example, tritium or a metal tritide is used as the radioisotope source for the cells.

The present invention relates to a method for producing a carbon nanotube aggregate whose bulk density is easily controllable. Therefore, the present invention provides a carbon nanotube aggregate suitable for use in various fields.

Porous spodumene-cordierite honeycomb bodies of high strength but low volumetric density, useful for the manufacture of close-coupled engine exhaust converters, gasoline engine particulate exhaust filters, and NOx integrated engine exhaust filters, are provided through the reactive sintering of batches comprising sources of magnesia, alumina and silica together with a lithia source, such as a spodumene or petalite ore.

The invention relates to a novel wax seal method for measuring the bulk density of asphalt mixture wax seal, belonging to the technical field of road asphalt mixture design. The present invention forms a wax film with a certain thickness on the surface of the asphalt mixture test piece, and includes all the open pores on the surface inside the wax film. At this time, the volume of the test piece including stone materials, asphalt, closed pores and open pores is formed. , that is, the real volume we need, which makes the test results more real and reliable, and effectively guarantees the accuracy of asphalt mixture design. The method can effectively unify the densities of asphalt mixtures with different pore ranges, and avoid the inconvenience of using different density measurement methods for asphalt mixtures with different pore ranges in the past.

The invention discloses an ultralow density ceramsite proppant and a preparation method thereof. The ultralow density ceramsite proppant is prepared from, by weight percent, 45-65% of calcined coal gangue, 25-30% of uncalcined coal gangue, 5-20% of alumina powder, 1-3% of aluminum fluoride, 3-5% of vanadium pentoxide. The ultralow density ceramsite proppant is prepared by kaolinite coal gangue with low cost and low volume density, and is applicable to hyposmosis unconventional oil and gas reservoir hydrofracture.

The invention relates to a winding preparation method of a high-porosity porous ceramic pipe. The winding preparation method comprises: adding aluminum silicate polycrystalline fiber, a binder and the like into water to prepare a slurry, and preparing a paper-like fiber film having fibers extending in a two-dimensional direction by using a papermaking molding method; uniformly coating the slurry prepared from the chopped aluminum silicate polycrystalline fiber, the aluminum silicate ceramic fine powder and the binder on the surface of the fiber film; winding under a certain external force to form a pipe billet having a predetermined size and a predetermined bulk density; and finally carrying out low temperature drying and high temperature firing to prepare the porous ceramic pipe. According to the present invention, the porous ceramic pipe has high porosity, and has low filtration pressure drop during solid-liquid separation or solid-gas separation; and the ordered arrangement of the fibers and the granular crystal is achieved by using the multi-layer winding method, and the fibers and the crystal are connected to form the grid structure through the firing, such that the material has the high porosity and the low filtration pressure drop, and further has good mechanical property and good economy.