41results about How to "Efficient refining" patented technology

The invention discloses a student comprehensive portrait label management system for online teaching based on deep learning, and the system comprises a data acquisition unit, a data preprocessing unit, an image label refining unit, and a result output and presentation unit. The system employs the point burying technology, the brain wave acquisition technology, the viewpoint tracking technology, the image recognition technology, the text mining technology and a deep learning algorithm for the learning contents, behaviors, physical sings and result data of students, and carries out the integration, checking and cleaning of the data collected and obtained from a plurality of data sources. The important dimension information is screened out of the basic data, and a representative portrait label is extracted, and a top-to-bottom integrated label system is formed. The portrait label result is displayed and used in a visualized manner through a proper logic. The system achieves the scientificevaluation of the hierarchical capability of student groups and individuals, achieves the scientific evaluation and presentation of the hierarchical capability of student groups and individuals in asystematic manner, and effectively guides the optimization and improvement of a student training scheme and a teaching content plan.

An improved system and method for updating search advertisements during search results navigation is provided. A search server may return search results from a search query with executable instructions that monitor events selecting a web page in the search results. When a web page may be selected in the search results on the client, a request that includes an address of a web page selected from the search results may be sent from the client to an advertiser server to update sponsored advertisements displayed in a sponsored advertisement area of the search results web page. The advertisement server may select an update of sponsored advertisements using query features, user features and web page features of the web page selected from the search results web page. The update may be sent to the client for display in the sponsored advertisement area of the search results web page.

The present invention provides a method for fast, robust and efficient BA pipeline (SfM) for wide area motion imagery (WAMI). The invention can, without applying direct outliers filtering (e.g. RANSAC) or re-estimation of the camera parameters (e.g. essential matrix estimation) efficiently refine noisy camera parameters in very short amounts of time. The method is highly robust owing to its adaptivity with the persistency factor of each track. The present invention highly suitable for sequential aerial imagery, particularly for WAMI, where camera parameters are available from onboard sensors.

This invention relates to a device for melting or refining glass or glass ceramics. According to the invention, such a device is provided with the following characteristics: a channel which is arranged in an essentially horizontal manner and which is provided with an inlet and an outlet for the glass melt; and an HF coil for coupling HF energy into the melt is allocated to the channel. The channel is made of a plurality of metal pipes in a similar way to a skull pot. Said pipes can be connected to a cooling medium.

A high-strength cold-rolled steel sheet includes a composition having controlled amounts of carbon, silicon, manganese, phosphorous, sulfur, titanium, niobium, sol. Aluminum, chromium, molybdenum, vanadium, boron, calcium, REM, and iron. A microstructure thereof has a main phase of ferrite of at least 40 area %, and a second phase of a low-temperature transformation phase consisting either or both of martensite and bainite, which comprises at least 10 area % in total and retained austenite (γ) at least comprising 3 area %. An average grain diameter of ferrite has a tilt angle of at least 15° is at most 5.0 mm, an average grain diameter of the low-temperature transformation-produced phase is at most 2.0 mm, an average grain diameter of lump-like retained γ having an aspect ratio of less than 5 is at most 1.5 mm, and an area fraction of the lump-like retained γ relative to the retained γ is at least 50%.

Provided are a 1500 MPa-grade steel with a high product of strength and elongation for vehicles and a manufacturing method thereof. The mass percentages of the chemical elements thereof are: 0.1-0.3% of C, 0.1-2.0% of Si, 7.5-12% of Mn, 0.01-2.0% of Al, and the balance of iron and other inevitable impurities. The microstructure of the steel with a high product of strength and elongation for vehicles is austenite+martensite+ferrite or austenite+martensite. The steel for vehicles can reach a grade of 1500 MPa, and has a product of strength and elongation of no less than 30 GPa %.

The invention provides a converter tapping injection refining desulfurization method and device. In the converter tapping process, with Ar (or N2) as powder spraying carrier gas, a spraying gun injects powdery desulfurization agents to molten steel streams in the tapping process, so that the powdery desulfurization agents are fed in a ladle with the molten steel streams; and the full mixing is realized under the effect of bottom blowing argon stirring of the ladle, so that the contact specific surface area of the powdery desulfurization agents and molten steel is increased, the inter-phase mass transfer speed and the molten steel desulfurization reaction speed are accelerated, the effective utilization efficiency of the powdery desulfurization agents is improved, the desulfurization refining production takt is accelerated, and the continuous stable efficient refining is realized. The defects in a traditional desulfurization process can be overcome; and the quick and efficient smeltingcan be realized. The powdery desulfurization agents can be replaced by carbon powder, desulfurization powder agents, desulfurization powder agents or alloy powder agents; and the multifunctional refining can be realized. The device and the method are not only suitable for molten steel desulfurization refining processes, but also suitable for other refining processes.

Provided are an anti-fatigue in-situ aluminium-based nanocomposite material for heavy-load automobile hubs and a preparation method therefor. By means of the fine adjustment of components and a forming process, in situ nano-compositing, micro-alloying and rapid compression moulding techniques are combined. That is, after the addition of elements Zr and B, an in-situ reaction occurs to form a nano ZrB2 ceramic reinforcement which is distributed in aluminium crystals and crystal boundaries and bonded to a metallurgical interface kept firm with the matrix. Moreover, with rare earth elements Er and Y and element Zr as addition ingredients and after the increase in the contents of Cr and Mn, a structure having fine aluminium crystal grains with a large number of micro-alloyed nano precipitated particles contained in the grains, fine and round eutectic silicon grains and a fine Mg2Si phase mainly dispersed inside the grains is obtained in the process of the rapid compression moulding and thermal treatment of the hubs; and thus, the tensile strength, the yield strength and the fatigue strength of an alloy are effectively improved.

The invention is made up of three major components, a sleeve that is mounted on an oar shaft; a dock, which is mounted to the shell's riggers; and a pair of oar retainers that clamp around the sleeve and pivotally mount to the dock. The sleeve is locked into the oar retainers via a latch. The sleeve has a movable block that has a cam, which engages grooves in the oar retainers. The sleeve and can rotate around its axis, which allows the oar to be feathered. The oar retainers hold the sleeve and allow it to rotate and pivot during the rowing stroke. The dock attaches the oar retainer to the shell or outrigger. Its purpose is twofold: first, it provides a stable vertical platform on which the oar retainers can pivot up and down; second, it swivels left and right.

A method of refining scrap silicon using an electron beam includes a step of selectively preparing lumps of n-type scrap silicon containing a specific impurity element as a dopant, a step of crushing the prepared lumps of scrap silicon, a step of placing the crushed silicon into a vacuum vessel, a step of irradiating the crushed silicon which was placed into the vacuum vessel with an electron beam to melt it and vaporize at least a portion of the impurity element, and a step of solidifying the resulting silicon.

A welded steel pipe with excellent welded heat-affected zone toughness includes a butt weld formed by prior welding either an inner surface or an outer surface with a single layer for each of the inner and outer surfaces, wherein in the metallographic structure of a welded heat-affected zone, the martensite-austenite constituent (MA) area fraction is 4% or less, the average prior-austenite grain size is 400 μm or less, and the following items are taken into account: the average prior-austenite grain size of a welded heat-affected zone formed by prior welding, the average prior-austenite grain size of a welded heat-affected zone formed by subsequent welding, the bead width determined at a position 5 mm apart from the tip of a weld bead formed by subsequent welding, the fusion line tilt angle of a weld bead of prior welding, and the fusion line tilt angle of a weld bead of subsequent welding.

The process of producing a refined borosilicate glass includes preparing a glass batch with a composition in wt. % on the basis of oxide content of SiO_2, 65-82; Al₂O₃, 2-8; B₂O₃, 5-13; MgO+CaO+SrO +BaO+ZnO, 0-7; ZrO₂, 0-2; and Li₂O+Na₂O+K₂O, 3-10; adding 0.05 wt. % to 0.6 wt. % of sulfate(s) expressed as SO₃ to the glass batch as the refining agent; melting the glass batch including the refining agent to form melted glass; and then hot-shaping the borosilicate glass. The refining agent may also include from 0.01 wt. % to 0.6 wt. % of F⁻ or from 0.015 wt. % to 0.6 wt. of Cl⁻. The sulfate is preferably an alkali metal and/or alkaline earth metal sulfate or sulfates.

There is provided a map display control apparatus. The apparatus includes: an accepting section configured to accept a search character; a search section configured to search for a landmark on a map, a name of the landmark at least partly matching the search character; a position adjusting section configured to adjust a display position of the map such that the searched landmark appears in the map; a search refining section configured to perform a new search for the landmark and refine the landmark whenever a new character is added to the search character; and a position movement section configured to move the display position of the map, depending on the number of the refined landmark or a position of the refined landmark.

The present invention relates to a novel process for refining the liquefied petroleum gas (LPG) in a commercial scale. The process comprises: sequentially performing fine desulfurization and mercaptan conversion of the LPG after alcohol amine treatment through desulfurizer and catalyst set in fixed bed reactor in the absence of alkali, wherein, during the fine desulfurization, the resultants of reaction between hydrogen sulfide in the LPG and Fe—Ca oxides or their hydrates adhered on the desulfurizer, and during the mercaptan conversion, the mercaptan in the LPG reacts with the residual trace amount of air in the LPG under the action of the catalyst to produce the disulfides; letting the formed disulfides along with the LPG flow out of the fixed bed reactor; rectifying the LPG after the mercaptan conversion to obtain the refined LPG products, with further rectification to obtain the valuable disulfide products. The present process has advantages of high efficiency, no alkali discharge, being a simplified process over the prior method using alkali treatment and making no environmental pollution.

The invention discloses an extraction and refining process of perishable organic matters in garbage. The process comprises the steps that mixed garbage with the particle size of 200mm or below is impacted and crushed, RDF is separated from the fine crushed mixed garbage by utilizing the characteristic of the RDF as a soft material, then perishable organic matters containing fine crushed slurry isobtained, jugging separation is carried out after RDF washing water and circulating process water are added to adjust the solid content of the slurry, inorganic particulate matters, sediment and residual fine crushed RDF in the slurry are separated, finally the perishable organic matters containing fine crushed slurry is filter pressed into an organic matter filter cake, the moisture content of the filter cake is controlled to be in the optimal range of aerobic fermentation of the organic matter filter cake, then the aerobic fermentation treatment is carried out on the organic matter filter cake, and filtrate is recycled and not discharged after the treatment. According to the extraction and refining process of the perishable organic matters in the garbage, the perishable organic matters are separated from the soft RDF by utilizing the characteristics of low strength and easy impact and crushing of the perishable organic matters, perishable organic matters with high purity, small particles, stable moisture and controllable pollutants are obtained through refining, and channels are opened for resource utilization of the perishable organic matters in the garbage.

The invention relates to a physical index optimizing system for recycling DMAC (dimethylacetamide), which belongs to the technical field of spandex production. The physical index optimizing system for recycling DMAC comprises a dehydrating tower, a coarse solvent tank, a refining tower, a distillation still supplying tank and a recovery tower, wherein the dehydrating tower is connected with a feed pipe, the bottom of the dehydrating tower is communicated to the middle of the refining tower through the coarse solvent tank, and the bottom of the refining tower is communicated with the bottom of the recovery tower through the distillation still supplying tank; a preheater is connected to the middle of the dehydrating tower, and a No.1 condenser and a No.1 chiller are connected to the top of the dehydrating tower; a No.2 condenser and a No.2 chiller are connected to the top of the refining tower; a No.3 condenser is arranged on the top of the recovery tower, a No.3 condensate receiving tank is arranged on the No.3 condenser, and a No.3 vacuum pump is arranged on the top of the No.3 condenser. By adopting the physical index optimizing system to recycle DMAC in the process of spandex production, normal operation of a DMAC distillation system is guaranteed, and the yield and physical indexes of the recycled DMAC are greatly increased.

The invention provides a continuous process for preparing mesophase pitch from refined raw oil, which comprises the following steps: by taking one or more of aromatic hydrocarbon-rich heavy oil, catalytic slurry oil, coal tar or ethylene tar as a raw material, decompressing to obtain a heavy fraction section of which the temperature is greater than 300 DEG C, and sequentially passing through an ultrasonic-assisted filtration de-ashing coupling enhanced extraction unit, a sedimentation unit and a solvent-oil separation unit, integrating a liquid-solid adsorption separation unit to obtain refined raw oil which is single in structural composition, narrow in molecular weight distribution and low in content of heteroatoms and solid impurities, and introducing the refined raw oil into a co-carbonization unit to be subjected to co-carbonization reaction with naphthenic base vacuum three-line and four-line distillate oil to obtain the mesophase pitch with the softening point being 220-310 DEG C, the mesophase content being larger than 92% and good spinnability. According to the method, high value-added utilization of the heavy distillate oil is realized through a highly integrated process, the operable space is large, the universality is high, and an important foundation is laid for preparing a high-performance petroleum-based carbon material.