11results about How to "Good lifting effect" patented technology

This application provides a method for preparing gallium oxide (GaO) with enhanced ultraviolet absorbance and a GaO material prepared according to this method. First, a GaO thin film capable of generating ultraviolet absorption is grown on a substrate by magnetron sputtering. The GaO thin film is then annealed. Next, a copper thin film is grown on the GaO thin film by magnetron sputtering, followed by rapid annealing, causing the copper film to crack into copper nanoparticles under heat. This preparation method utilizes copper nanoparticles to enhance the ultraviolet absorption performance of GaO. The process steps are simple and easy to operate, thus effectively reducing the preparation cost. Furthermore, the GaO material prepared by this method shows a significant improvement in ultraviolet absorbance.

This invention relates to a protective slag for sulfur-containing free-cutting steel crystallizers using photovoltaic silicon mud and its preparation method. The protective slag of this invention contains, by mass percentage, 30.6–31.6 wt% CaO, 36.7–37.7 wt% SiO2, 6.1–7.1 wt% Al2O3, 8.2–9.2 wt% Na2O, 5.0–6.0 wt% F, and 9.0–10.0 wt% C. 固 H2O up to 0.5 wt%; C 固 The carbon in the protective slag is fixed. Raw materials include 7-9 wt% silica mud, 14-16 wt% blast furnace slag, 24-26 wt% phosphorus slag, 14-16 wt% silicate cement, 4-6 wt% wollastonite, 10-12 wt% soda ash, 2-4 wt% fluorite, 6-8 wt% cryolite, and 10-12 wt% carbon powder. The preparation method includes batching, slurry preparation (solid content 40-45%), spray granulation (spray gun orifice diameter 1.0-1.5 mm, inlet temperature 450-480℃), and post-treatment. This invention enables the utilization of photovoltaic silica mud, reducing the cost of protective slag containing silica mud by 870 yuan per ton, and increasing the flaw detection pass rate of continuously cast billets from 25.99% to 55.17%, thus possessing both energy-saving and emission-reduction value and a circular economy value.

The utility model provides a kind of split type spliced handlebar and luggage, it is related to the technical field of daily necessities, the split type spliced handlebar includes handlebar assembly and sleeve, the quantity of handlebar assembly is set to two, handlebar assembly is provided with plug-in rod, two plug-in rod are oppositely arranged and end detachably connected to form support rod, the sleeve is sleeved on the support rod;The luggage includes the split type spliced handlebar;Two handlebar assembly and sleeve of the utility model cooperate with each other, not only can carry larger load, the lifting effect is remarkable, and can be selected according to the actual demand of user The sleeve of corresponding appearance is installed, appearance is various and exquisite, simultaneously when handlebar is damaged, the replacement of single component can be realized, structure is flexible, and use cost is low.

The invention discloses a preparation method for constructing a multistage micro-nano heterostructure based on combination of a laser melting deposition process and a laser shock peening means, which comprises the following steps of: printing by using dry TC4 alloy powder, accumulating a printed TC4 metal printing layer to form a TC4 metal micron layer, performing low-power laser shock peening on part of the TC4 metal micron layer to form a TC4 metal submicron layer, and forming the multistage micro-nano heterostructure. A TC4 metal printing layer is printed on the submicron layer and subjected to high-power laser shock peening to form a TC4 metal nano layer, a TC4 metal printing layer is printed on the nano layer and subjected to low-power laser shock peening to form a TC4 metal submicron layer, printing and cyclic operation are continued on the submicron layer to form a sample, and the sample is obtained through annealing treatment. According to the preparation method disclosed by the invention, a micron layer-nano sandwich composite layer-micron layer multi-stage micro-nano heterostructure is formed, crack propagation is effectively hindered, and the elongation of the material is improved, so that alloy strength and plasticity synergistic strengthening is realized.

A short-range clutter suppression method for reducing the number of orthogonal waveforms used, comprising: determining the range of short-range clutter to be suppressed; determining the number of short-range clutter ambiguities M; determining the number of orthogonal waveforms to be used and the corresponding orthogonal waveforms; determining the ambiguity region in which the main clutter region is located; determining the timing of the radar transmitting the orthogonal waveforms and transmitting the orthogonal waveforms; and performing matched filtering on the echo according to the order of the transmitted orthogonal waveforms to obtain the main clutter region signal with short-range ambiguous clutter suppressed. Compared with existing range ambiguity suppression methods, the present application can improve the suppression capability of short-range clutter, and is suitable for cases where there are multiple short-range ambiguities and the main clutter region is outside the multiple ambiguity regions in the short-range region. Especially for cases where the pulse repetition frequency is high, resulting in a large number of observable region ambiguities, the number of orthogonal waveforms is reduced, and the improvement is more obvious.

This invention provides a triboelectric nanogenerator and its fabrication method. The generator operates in a vertical contact-separation mode, with a positive friction layer of PET film and a negative friction layer of PDMS composite film with a single layer of dense SiO₂ microspheres inserted on its surface. The fabrication process employs a two-step spin-coating method: first, a PDMS solution is spin-coated onto a substrate; then, a suspension of SiO₂ microspheres is spin-coated onto the uncured surface. After heating and curing, a composite negative friction layer is formed, which is then assembled with electrodes and a support structure. This invention significantly increases the triboelectric contact area and enhances charge trapping capability by constructing the SiO₂ microsphere insertion layer, thereby greatly improving output performance. Furthermore, the fabrication process is simple and low-cost, making it suitable for powering microelectronic devices and self-powered sensing applications.

The application discloses a kind of space-time adaptive processing methods of airborne broadband radar based on frequency domain compensation, comprising: obtaining target echo signal;The distance sampling is carried out to broadband echo signal, and the sampled target echo signal is obtained;The Fourier transform is carried out to the sampled target echo signal, and the target echo signal in distance frequency domain is obtained;The target echo signal after matching filtering is obtained by carrying out matching filtering processing to the target echo signal in distance frequency domain;According to the preset phase compensation factor, the envelope movement between each array element and each pulse of the target echo signal after matching filtering is compensated, and the compensated target echo signal is obtained;The inverse Fourier transform is carried out to the compensated target echo signal, and the target echo signal in distance time domain is obtained;The echo signal in distance time domain is carried out space-time adaptive processing, and clutter and noise are inhibited.The application can improve effect more obvious.

This invention belongs to, but is not limited to, the field of intelligent accounting archive technology, and discloses an intelligent archiving method for accounting archives and a data verification and rollback control method. The method includes: dynamic QR code technology + barcode scanner / PDA + NLP image type recognition + RFID archive borrowing to achieve intelligent archiving; when a document is saved, a QR code is generated based on the relevant information of the document, and the corresponding metadata information is updated at different business nodes; sub-codes and master codes are used to verify data uniqueness; a communication protocol with the barcode scanner / PDA ensures data security; NLP identifies image types, and different types of attachments are verified in different ways; RFID facilitates quick retrieval when borrowing archives. This invention not only effectively improves the management efficiency of enterprises, but also brings positive impacts on energy conservation, environmental protection, and sustainable development. Through optimization of each link, by reducing paper and energy consumption, improving resource utilization efficiency, and enhancing the enterprise's risk resistance, a win-win situation of economic and environmental benefits is ultimately achieved.

This invention proposes a student book recommendation system and method based on an improved temporal graph neural network, comprising a student borrowing graph representation model generation module, a graph node embedding matrix generation module, a graph-level embedding vector generation module, a book borrowing relationship prediction matrix generation module, and a borrowing relationship decoding and reconstruction module. It is implemented through five processes: determining the student book borrowing graph representation model, obtaining graph-level embedding vectors, obtaining a book borrowing relationship prediction matrix based on an improved gated recurrent unit model, and obtaining the borrowing relationships after decoding and reconstructing the prediction matrix. This invention considers the changes in students' borrowing interests over time, thus influencing their borrowing behavior and preferences. Compared to the previous recommendation algorithm, this invention reduces computation time by 50% and doubles efficiency.

The utility model relates to a new lifting mechanism for container relates to the technical field of logistics equipment, it includes lifting seat assembly, is provided with main rod cover, pull frame on lifting seat assembly, main rod cover is U-shaped opening structure, pull frame is located main rod cover opening place outside, is provided with trapezoidal screw rod in main rod cover, is provided with a plurality of transmission guide seat on pull frame, lifting seat assembly is provided with drive motor and trapezoidal screw rod transmission connection away from pull frame side, pull frame both ends are provided with first fixed support, second fixed support through connecting rod, drive trapezoidal screw rod through adopting motor and drive lifting support to carry out lifting movement, and a plurality of groups of lifting mechanisms are clamped and fixed to container, not only can obtain stable lifting effect, but also faster lifting speed, and have self -locking function, can prevent the falling event from happening caused by accident in the lifting process.

The application provides a biodegradable composition and a preparation method and application thereof, the biodegradable composition comprises 59-94 parts of biodegradable polyester, 1-6 parts of polylactic acid, 5-35 parts of starch and 1-10 parts of plasticizer in terms of weight parts; the D90 value of the starch after being dispersed with ethanol as a solvent is recorded as D1, the D90 value of the starch after being dispersed with a 30% ethanol aqueous solution as a solvent is recorded as D2, and 1.0<=D1 / D2<=1.8. In the application, the biodegradable composition has good puncture resistance and lifting performance, and the durability of the film is improved.