Abstract: Provided is a node diaphragm scraping and sorting device for a bamboo split, which is configured to scrape node diaphragms of the bamboo splits and to sequentially sort the bamboo inner layers and bamboo outer layers of the bamboo splits towards the same direction. The device includes a scraping device, a sorting device and a clamping and conveying device which are arranged from front to back along an axis. The scraping device includes a conical cylinder, two pressing semi-rings, and a scraping ring. The sorting device includes an e-shaped sleeve composed of an inner cylinder and an outer cylinder, and two shifting forks located at both ends of the sleeve. The clamping and conveying device includes an inner ring moving on the axis, two clamping semi-rings and a conveying power device. The structure, function and technical parameters of each branch device are also introduced in detail.

Abstract: A high-efficiency and short-process method for preparing a high-strength and high-conductivity copper alloy is disclosed, comprising the following steps: performing horizontal continuous casting to obtain an as-cast primary billet of copper alloy, wherein the alloying elements in the obtained as-cast primary billet being in a supersaturated solid solution state; after peeling the obtained as-cast primary billet, directly performing continuous extrusion, cold working and aging annealing treatment to obtain a copper alloy, and keeping the alloying elements of the billet in a supersaturated solid solution state during the process of continuous extrusion. The method shortens the flow, reduces energy consumption and improves the product forming rate.

Abstract: A method includes receiving a set of real-world log data defining a real-world driving environment and generated by an autonomous vehicle (AV). The set of real-world log data includes at least one set of real-world parameters defining at least one real-world object observed by the AV operating within the real-world driving environment. The method further includes generating, based on the set of real-world log data, a set of simulated log data defining a simulated driving environment and causing a simulation to be performed using the set of simulated log data. The set of simulated log data comprises at least one set of simulated parameters defining at least one simulated object within the simulated driving environment, and generating the set of simulated log data includes perturbing at least one real-world parameter of the at least one set of real-world parameters to obtain the at least one set of simulated parameters.

Abstract: A stainless steel with high strength and high toughness and processing method thereof are disclosed in the present invention. The stainless steel comprising: C of 0.01%˜0.1% weight percentage, N of 0.05%˜0.2%, P of no higher than 0.03%, S of no higher than 0.003%, Si of 0.5%˜1%, Mn of 1.0%˜2.0%, Cr of 15%˜17%, Ni of 5% to 7%, and Fe. The stainless steel contains austenite and strain-induced martensite structure, wherein the martensite is of irregular approximately spindle body shape, and the average size of its long axis ranges from 50 to 1000 nm and that of its short axis ranges from 20 to 500 nm, the volume percent of martensite in the stainless steel is 0.1% to 20%.

Abstract: A high-efficiency and short-process method for preparing a high-strength and high-conductivity copper alloy is disclosed, comprising the following steps: performing horizontal continuous casting to obtain an as-cast primary billet of copper alloy, wherein the alloying elements in the obtained as-cast primary billet being in a supersaturated solid solution state; after peeling the obtained as-cast primary billet, directly performing continuous extrusion, cold working and aging annealing treatment to obtain a copper alloy, and keeping the alloying elements of the billet in a supersaturated solid solution state during the process of continuous extrusion. The method shortens the flow, reduces energy consumption and improves the product forming rate.

Abstract: A method for quantitatively evaluating ablation-resistant properties of materials, comprising repairing a cathode sample, loading a sample into a test system, setting a minimum ablation time; conducting an arc ablation test on the sample for no less than the minimum ablation time, recording the arc ablation parameters; dividing the ablation volume by an ablation power to obtain an ablation loss rate, and taking the ablation loss rate as a quantitative evaluation index of ablation-resistant properties of electrode materials. The present invention is capable of quantitatively evaluating the arc ablation-resistant properties of electrode materials.

Abstract: The present invention discloses a super-strong high-conductivity copper alloy and applications thereof as the contact wire materials of high speed railways allowing a speed of over 400 km per hour. The copper alloy comprises niobium, chromium, zirconium, titanium and remaining copper; the copper alloy exists in the form of long bar or wire, wherein niobium is distributed in the copper matrix in the form of nanofibers and solid solution atoms, chromium is distributed around the niobium fibers and the copper matrix in the form of nano-particles and solid solution atoms, zirconium is distributed around the niobium fibers and in the copper matrix in the form of copper-zirconium compound nano-particles and solid solution atoms; titanium is distributed in the copper matrix in the form of copper-titanium GP zone and solid solution atoms; the total amount of niobium, chromium and zirconium solid solution atoms contained in the copper alloy is less than 0.2%.

Abstract: The present invention discloses a preparation method of an alkaline anion exchange membrane and a use of the membrane in a fuel cell. The preparation method of the alkaline anion exchange membrane contains: taking polyvinyl alcohol as a substrate, which provides mechanical strength for the membrane; taking a commercialized alkaline resin as an anion exchange resin of chemically reactive groups, performing a cross-linking reaction between polyvinyl alcohol and the alkaline resin by mixing; meanwhile, during the process of forming the alkaline anion exchange membrane, adding an organic salt of transition metal, and doping transition metal ions into the membrane. By taking advantages of catalytic characteristics of the transition metal ions, the fuel leaking from the anode of the cell can perform a catalytic reaction in time in the ion exchange membrane, and thereby improve an ion conductivity of the membrane and efficiently decrease a resistance of the cell.

Abstract: A high-strength and high-conductivity copper alloy and applications of the alloy as a material of a contact line of a high-speed railway allowing a speed higher than 400 kilometers per hour. The copper alloy has the following characteristics: (1) constituents of the copper alloy are in the form of CuXY, X is one or more selected from Ag, Nb and Ta, and Y is one of more selected from Cr, Zr and Si; (2) at a room temperature, the element X in the copper alloy exists in the form of a pure phase and solid solution atoms, the element Y exists in the form of a pure phase and solid solution atoms or a CuY compound and solid solution atoms, the content of the element X existing in the form of the solid solution atoms is lower than 0.5%, and the content of the element Y existing in the form of the solid solution atoms is lower than 0.

Abstract: A portable supercritical fluid extraction apparatus, comprising: (i) a pressure vessel for generating a supercritical fluid therein; (ii) a liquid solvent supply tank; (iii) a means for interconnecting said pressure vessel and said liquid solvent supply tank at a predetermined angle for delivery therethrough of a liquid solvent from the liquid storage tank to the pressure vessel; and (iv) a heating component for heating contents of the pressure vessel to produce a supercritical fluid therein. The apparatus may additionally comprise a sample in fluid communication with the pressure vessel, and a receiving vessel in fluid communication with the pressure vessel. The pressure vessel may have a heating means for heating fluid contents therein, for example a heating wrap, a heating block, or a heating jacket.

Abstract: A method of processing fully austenitic stainless steels, comprising the following steps: (1) performing a solution treatment on a raw material with a certain chemical composition, and cooling to get samples, the raw material contains: 0˜0.2% of C, 0˜0.2% of N, not more than 0.03% of P, not more than 0.001% of S, 0.5%˜1% of Si, 1.0%˜2.0% of Mn, 15%˜17% of Cr, 5%˜7% of Ni by weight, the remaining is Fe, and the content of C and N should not be zero simultaneously with a total content of both at 0.15%˜0.2%; and (2) performing hot-working for deformation of the samples obtained in step (1), to get a fully austenitic stainless steel. The stainless steel prepared by the hot-working deformation of the present invention has a yield strength of 2 to 3 times of that before hot-working deformation and an elongation of 1.05 to 1.2 times of that before hot-working deformation.

Abstract: The present invention discloses a preparation method of an alkaline anion exchange membrane and a use of the membrane in a fuel cell. The preparation method of the alkaline anion exchange membrane contains: taking polyvinyl alcohol as a substrate, which provides mechanical strength for the membrane; taking a commercialized alkaline resin as an anion exchange resin of chemically reactive groups, performing a cross-linking reaction between polyvinyl alcohol and the alkaline resin by mixing; meanwhile, during the process of forming the alkaline anion exchange membrane, adding an organic salt of transition metal, and doping transition metal ions into the membrane. By taking advantages of catalytic characteristics of the transition metal ions, the fuel leaking from the anode of the cell can perform a catalytic reaction in time in the ion exchange membrane, and thereby improve an ion conductivity of the membrane and efficiently decrease a resistance of the cell.

Abstract: A portable supercritical fluid extraction apparatus, comprising: (i) a pressure vessel for generating a supercritical fluid therein; (ii) a liquid solvent supply tank; (iii) a means for interconnecting said pressure vessel and said liquid solvent supply tank at a predetermined angle for delivery therethrough of a liquid solvent from the liquid storage tank to the pressure vessel; and (iv) a heating component for heating contents of the pressure vessel to produce a supercritical fluid therein. The apparatus may additionally comprise a sample in fluid communication with the pressure vessel, and a receiving vessel in fluid communication with the pressure vessel. The pressure vessel may have a heating means for heating fluid contents therein, for example a heating wrap, a heating block, or a heating jacket.

Abstract: A stainless steel with high strength and high toughness and processing method thereof are disclosed in the present invention. The stainless steel comprising: C of 0.01%˜0.1% weight percentage, N of 0.05%˜0.2%, P of no higher than 0.03%, S of no higher than 0.003%, Si of 0.5%˜1%, Mn of 1.0%˜2.0%, Cr of 15%˜17%, Ni of 5% to 7%, and Fe. The stainless steel contains austenite and strain-induced martensite structure, wherein the martensite is of irregular approximately spindle body shape, and the average size of its long axis ranges from 50 to 1000 nm and that of its short axis ranges from 20 to 500 nm, the volume percent of martensite in the stainless steel is 0.1% to 20%.

Abstract: A method of processing fully austenitic stainless steels, comprising the following steps: (1) performing a solution treatment on a raw material with a certain chemical composition, and cooling to get samples, the raw material contains: 0˜0.2% of C, 0˜0.2% of N, not more than 0.03% of P, not more than 0.001% of S, 0.5%˜1% of Si, 1.0%˜2.0% of Mn, 15%˜17% of Cr, 5%˜7% of Ni by weight, the remaining is Fe, and the content of C and N should not be zero simultaneously with a total content of both at 0.15%˜0.2%; and (2) performing hot-working for deformation of the samples obtained in step (1), to get a fully austenitic stainless steel. The stainless steel prepared by the hot-working deformation of the present invention has a yield strength of 2 to 3 times of that before hot-working deformation and an elongation of 1.05 to 1.2 times of that before hot-working deformation.

Abstract: The present invention discloses a super-strong high-conductivity copper alloy and applications thereof as the contact wire materials of high speed railways allowing a speed of over 400 km per hour. The copper alloy comprises niobium, chromium, zirconium, titanium and remaining copper; the copper alloy exists in the form of long bar or wire, wherein niobium is distributed in the copper matrix in the form of nanofibers and solid solution atoms, chromium is distributed around the niobium fibers and the copper matrix in the form of nano-particles and solid solution atoms, zirconium is distributed around the niobium fibers and in the copper matrix in the form of copper-zirconium compound nano-particles and solid solution atoms; titanium is distributed in the copper matrix in the form of copper-titanium GP zone and solid solution atoms; the total amount of niobium, chromium and zirconium solid solution atoms contained in the copper alloy is less than 0.2%.

Abstract: A high-strength and high-conductivity copper alloy and applications of the alloy as a material of a contact line of a high-speed railway allowing a speed higher than 400 kilometers per hour. The copper alloy has the following characteristics: (1) constituents of the copper alloy are in the form of CuXY, X is one or more selected from Ag, Nb and Ta, and Y is one of more selected from Cr, Zr and Si; (2) at a room temperature, the element X in the copper alloy exists in the form of a pure phase and solid solution atoms, the element Y exists in the form of a pure phase and solid solution atoms or a CuY compound and solid solution atoms, the content of the element X existing in the form of the solid solution atoms is lower than 0.5%, and the content of the element Y existing in the form of the solid solution atoms is lower than 0.

Abstract: A portable supercritical fluid extraction apparatus, comprising: (i) a pressure vessel for generating a supercritical fluid therein; (ii) a liquid solvent supply tank; (iii) a means for interconnecting said pressure vessel and said liquid solvent supply tank at a predetermined angle for delivery therethrough of a liquid solvent from the liquid storage tank to the pressure vessel; and (iv) a heating component for heating contents of the pressure vessel to produce a supercritical fluid therein. The apparatus may additionally comprise a sample in fluid communication with the pressure vessel, and a receiving vessel in fluid communication with the pressure vessel. The pressure vessel may have a heating means for heating fluid contents therein, for example a heating wrap, a heating block, or a heating jacket.

Abstract: A method for manufacturing a permanent-magnet motor rotor includes manufacturing a rotary shaft, a permanent magnet, a front end cover, a rear end cover, and a magnetic yoke unit, where the magnetic yoke unit contains multiple pole shoe parts and one iron core part, where each pole shoe part and the iron core part are connected therebetween via a connecting strip; manufacturing a rotor spacer; all positioning holes of the magnetic yoke unit correspond to the permanent-magnet through hole of the rotor spacer to form a permanent-magnet passage; inserting the permanent magnet into the permanent-magnet passage; inserting tightening bolts; cutting off the mid-section of each connecting strip, overlapping the pole shoe parts to form a rotor pole shoe, overlapping the iron core parts to form a rotor iron core; and arranging respectively the front end cover and the rear end cover on a front end and a rear end.

Abstract: A method for manufacturing a permanent-magnet motor rotor includes manufacturing a rotary shaft, a permanent magnet, a front end cover, a rear end cover, and a magnetic yoke unit, where the magnetic yoke unit contains multiple pole shoe parts and one iron core part, where each pole shoe part and the iron core part are connected therebetween via a connecting strip; manufacturing a rotor spacer all positioning holes of the magnetic yoke unit correspond to the permanent-magnet through hole of the rotor spacer to form a permanent-magnet passage; inserting the permanent magnet into the permanent-magnet passage; inserting tightening bolts cutting off the mid-section of each connecting strip, overlapping the pole shoe parts to form a rotor pole shoe, overlapping the iron core parts to form a rotor iron core; and arranging respectively the front end cover and the rear end cover on a front end and a rear end.