Abstract: Disclosed is a high-yield-ratio cold-rolled dual-phase steel, having the following chemical elements in percentage by mass: 0.05%-0.08% of C, 0.9%-1.2% of Mn, 0.1%-0.6% of Si, 0.030%-0.060% of Nb, 0.030%-0.060% of Ti, 0.015%-0.045% of Al, and the balance being Fe and other inevitable impurities. A manufacturing method for the high-yield-ratio cold-rolled dual-phase steel, comprising: (1) smelting and casting; (2) hot rolling, wherein a casting blank is controlled and soaked at a temperature of 1200° C.-1250° C.; rolled with the finish rolling temperature being 840° C.-930° C.; cooled at a speed of 20° C./s-70° C./s, and then wound at the winding temperature being 570° C.-630° C.; (3) cold rolling; (4) annealing at the soaking temperature being 750° C.-790° C. for 40 s-200 s, cooling at a speed of 30° C./s-80° C./s, the start temperature of cooling is 650° C. to 730° C., the aging temperature is 200° C. to 260° C., and the overaging time is 100 s to 400 s; and (5) leveling.

Abstract: An interactive control method for a virtual live-streaming room, a storage medium and an electronic device are provided, and the method includes: providing a live-streaming screen of the virtual live-streaming room on a graphical user interface; acquiring an image matching result, where the image matching result is a result acquired by comparing the live-streaming screen with a pre-stored item image; determining a target item successfully matched in the live-streaming screen according to the image matching result; setting a region associated with the target item in the live-streaming screen as an interactive response region; and in response to an interactive operation on the interactive response region, triggering an interactive interface corresponding to the target item.

Abstract: A cold-rolled annealed dual-phase steel is provided, having a microstructure of ferrite and martensite, and comprising the following chemical elements in mass percentage: 0.08% to 0.1% of C, 1.95% to 2.2% of Mn, 0.1% to 0.6% of Si, 0.020% to 0.050% of Nb, 0.020% to 0.050% of Ti, 0.015% to 0.045% of Als, 0.40% to 0.60% of Cr, 0.2% to 0.4% of Mo, 0.001% to 0.005% of Ca, and the balance being Fe and other inevitable impurities. A method for manufacturing the cold-rolled annealed dual-phase steel is also provided, comprising the steps of: (1) smelting and casting; (2) hot rolling; (3) cold rolling; (4) annealing; and (5) temper rolling.

Abstract: The present invention provides a method for manufacturing a cold-rolled or zinc-plated dual-phase steel plate over 980 MPa. After being subjected to hot rolling, coiling, bundling, and online heat preservation, a slab is directly sent to a cold rolling and continuous annealing process, or a cold rolling, continuous annealing, and zinc plating process, so as to obtain a cold-rolled or zinc-plated dual-phase steel plate, wherein the coiling temperature is controlled to be over 450° C. The online thermal preservation means that after uncoiling of each hot-rolled coil, an independent and airtight thermal preservation cover is closed, and the hot-rolled coil with the closed thermal preservation cover is transferred to coil rolling by means of a steel coil conveying chain or a traveling car; the thermal preservation temperature for the hot-rolled coil in the thermal preservation cover is over 450° C., and the thermal preservation duration is less than 20 hours.

Abstract: The present invention relates to a bispecific antibody-drug conjugate comprising a bispecific antibody, a toxin, and a linker, and to a pharmaceutical composition comprising the bispecific antibody-drug conjugate, and a use of the bispecific antibody-drug conjugate and the pharmaceutical composition thereof in the preparation of medicaments for preventing and/or treating cancer. The bispecific antibody comprises a first paratope capable of recognizing and/or binding to domain II of HER2, and a second paratope capable of recognizing and/or binding to domain IV of HER2; the toxin is selected from the group consisting of maytansines, hemiasterlins, amanitins, auristatins, calicheamicins and duocarmycins; the linker is a cleavable linker or a non-cleavable linker; alternatively, one or more hydrogen atoms in the toxin and/or linker are optionally deuterated.

Abstract: Disclosed is a multi-layer composite cold-rolled steel plate, provided with an upper surface layer, a lower surface layer and at least one interlayer between the upper surface layer and the lower surface layer in the thickness direction of the steel plate, wherein the phase proportion of austenite in the microstructure of the upper surface layer and the lower surface layer is ?95%, and the at least one interlayer comprises at least one first interlayer, with the phase proportion of martensite in the microstructure of the first interlayer being ?85%. In addition, further disclosed is a method for manufacturing the multi-layer composite cold-rolled steel plate above, the method comprising the steps of: (1) preparing billets for various layers and assembling the billets; (2) rolling; (3) acid pickling and cold-rolling; (4) annealing, involving: controlling the annealing temperature to be 830-890° C., then cooling to 700-800° C. at a rate of 3-15° C.

Abstract: Disclosed is an electro-galvanized super-strength dual-phase steel resistant to delayed cracking. A matrix structure thereof is ferrite+tempered martensite and the steel contains the following chemical elements in the following mass percentages: C:0.07-0.1%, Si: 0.05-0.3%, Mn: 2.0-2.6%, Cr: 0.2-0.6%, Mo: 0.1-0.25%, Al: 0.02-0.05%, Nb: 0.02-0.04%, and V: 0.06-0.2%. Also disclosed is a method for manufacturing the electro-galvanized super-strength dual-phase steel resistant to delayed cracking, the method comprising the steps of: smelting and continuous casting, hot rolling, cold rolling, annealing, tempering, leveling and electroplating. The electro-galvanized super-strength dual-phase steel resistant to delayed cracking according to the present invention not only has better mechanical properties, but also has excellent delayed cracking resistance and low initial hydrogen content.

Abstract: Disclosed in the present disclosure is an ultrahigh-strength dual-phase steel. The matrix structure of the ultrahigh-strength dual-phase steel is ferrite and martensite, wherein the ferrite and the martensite are evenly distributed in an island shape. The ultrahigh-strength dual-phase steel contains the following chemical elements in percentage by mass: 0.12-0.2% of C, 0.5-1.0% of Si, 2.5-3.0% of Mn, 0.02-0.05% of Al, 0.02-0.05% of Nb, 0.02-0.05% of Ti, and 0.001-0.003% of B. Further disclosed in the present disclosure is a manufacturing method for the ultrahigh-strength dual-phase steel, comprising the steps of smelting and continuous casting, hot rolling, cold rolling, annealing, tempering, and leveling. The ultrahigh-strength dual-phase steel in the present disclosure has not only good mechanical properties but also excellent delayed cracking resistance and low initial hydrogen content, and can be suitable for manufacturing of vehicle safety structural parts.

Abstract: Disclosed is a cold-rolled and annealed dual-phase steel having a tensile strength of greater than 780 MPa. A matrix structure thereof is fine and uniform martensite+ferrite. The cold-rolled and annealed dual-phase steel contains the following chemical elements in the following mass percentages: C: 0.1%-0.13%, Si: 0.4%-0.8%, Mn: 1.65%-1.9%, Al: 0.01%-0.05%, Nb: 0.01-0.03%, and Ti: 0.01-0.03%. Furthermore, the cold-rolled annealed dual-phase steel does not contain the elements Cr or Mo. In addition, also disclosed is a method for manufacturing the cold-rolled and annealed dual-phase steel, comprising smelting and continuous casting, hot rolling, cold rolling, annealing, tempering and flattening. The cold-rolled and annealed dual-phase steel of the present invention is not only economical, but also has the characteristics of high strength, excellent elongation and cold bending properties.

Abstract: A cold-rolled annealed dual-phase steel is provided, having a microstructure of ferrite and martensite, and comprising the following chemical elements in mass percentage: 0.08% to 0.1% of C, 1.95% to 2.2% of Mn, 0.1% to 0.6% of Si, 0.020% to 0.050% of Nb, 0.020% to 0.050% of Ti, 0.015% to 0.045% of Als, 0.40% to 0.60% of Cr, 0.2% to 0.4% of Mo, 0.001% to 0.005% of Ca, and the balance being Fe and other inevitable impurities. A method for manufacturing the cold-rolled annealed dual-phase steel is also provided, comprising the steps of: (1) smelting and casting; (2) hot rolling; (3) cold rolling; (4) annealing; and (5) temper rolling.

Abstract: Disclosed in the present invention is a manufacturing method for a carbon steel and austenitic stainless-steel rolling clad plate, comprising the steps of: (1) obtaining a blank material of a carbon steel layer and a blank material of a stainless-steel layer; (2) assembling blank materials; (3) cladding and rolling; (4) cold rolling; (5) first annealing; and (6) second annealing. The carbon steel and austenitic stainless-steel rolling clad plate has two unique annealing processes, so that the clad plate has the performance advantages of the austenitic stainless-steel and the carbon steel. In addition, further disclosed in the present invention is a carbon steel and austenitic stainless-steel rolling clad plate manufactured by this method.

Abstract: Disclosed is a multi-layer rolled composite board, comprising a transition layer provided between two adjacent composite layers, wherein the transition layer is an anisotropic steel sheet. Also disclosed is a manufacturing method for the multi-layer rolled composite board, the method comprising the following steps: (1) providing a transition layer between adjacent composite layers to assemble a blank, and creating a vacuum between the layers; and (2) performing composite rolling, comprising: heating the blank to 1100-1260° C. and maintaining the temperature for 0.6 h or above, then performing hot rolling at a temperature of Ar3 or above, with the final rolling temperature being controlled to be higher than 820° C., cooling at a speed of 30-100° C./s after rolling, and then coiling, with the coiling temperature being controlled to be 20-750° C.

Abstract: Disclosed is a method for manufacturing a cold-rolling strip steel (1) with the strength and hardness thereof varying in a thickness direction, the method comprising the steps: smelting, continuous casting, hot rolling, cold rolling, and continuous annealing. When quenching is performed in the continuous annealing step, an asymmetric quenching and cooling process is performed on both surfaces of the strip steel. In addition, also disclosed is a cold-rolling strip steel (1) with the strength and hardness thereof varying in a thickness direction, which is prepared by the above manufacturing method.

Abstract: The invention discloses a 780 MPa cold-rolled dual-phase strip steel having a microstructure of fine equiaxed ferrite matrix and martensite islands distributed homogeneously on the ferrite matrix, and comprising the following chemical elements in mass percentage: C: 0.06-0.1%; Si?0.28%; Mn: 1.8-2.3%; Cr: 0.1-0.4%; Mo: not added when Cr?0.3%; Mo=0.3—Cr when Cr<0.3%; Al: 0.015-0.05%; at least one of Nb and Ti elements, wherein Nb+Ti is in the range of 0.02-0.05%; and the balance amounts of Fe and other unavoidable impurities. Correspondingly, the invention also discloses a method for manufacturing the 780 MPa cold-rolled dual-phase strip steel. The 780 MPa cold-rolled dual-phase strip steel has high strength, superior elongation, good phosphating property and small anisotropy in mechanical properties.

Abstract: A low-cost and high-formability 1180 MPa grade cold-rolled annealed dual-phase steel plate and a manufacturing method thereof are provided. The dual-phase steel plate has the following chemical composition by mass percentages: C: 0.1%-0.125%, Si: 0.4%-0.8%, Mn: 2.6%-2.9%, Al: 0.01%-0.05%, Nb: 0.01%-0.03%, and Ti: 0.01%-0.03%, the remainder being Fe and unavoidable impurities. By reasonable design of alloy elements and manufacturing processes, the dual-phase steel plate of the invention achieves a strength of 1180 MPa grade at a low cost, obtains a fine and uniform martensite-ferrite dual-phase structure that ensures excellent elongation rate and cold bending performance, and has good formability. The dual-phase steel plate has a yield strength of more than 850 MPa, a tensile strength of more than 1180 MPa, an elongation rate of 8% or more, and a parameter (R/t), characterizing the 90-degree cold bending performance, of 2.5 or less.

Abstract: The present invention relates to bispecific or multi-specific antibody molecules with two or more paratopes. At least one paratope is Fv or scFv, while the other paratope is in a mono-valent or bivalent Fab. These novel molecules also have an Fc moiety that allows extended half-life in vivo.

Abstract: Certain aspects of the present disclosure generally relate to wireless communications. In some aspects, a wireless communications device may determine that the wireless communications device is hardware capable of supporting DSDA operation, where the wireless communications device is a DR-DSDS wireless communications device that is configured for at least one of UL CA or MIMO operation. In some aspects, the wireless communications device may operate as a DSDA wireless communications device based at least in part on determining that the wireless communications device is hardware capable of supporting DSDA operation. Numerous other aspects are provided.

Abstract: Disclosed is a 980 MPa grade cold-roll steel sheets with high hole expansion rate and higher percentage elongation, and manufacturing method thereof. The mass percents of chemical components in the steel sheet are: C: 0.08%-0.12%, Si: 0.1%-1.0%, Mn: 1.9%-2.6%, Al: 0.01%-0.05%, Cr: 0.1-0.55%, Mo: 0.1-0.5%, Ti: 0.01-0.1%, the rest being Fe and other inevitable impurities. The steel plate has a yield strength >600 MPa, a tensile strength >980 MPa, a percentage elongation >11%, a hole expansion rate ?45%, and a tensile strength up to 980 MPa grade; the microscopic structure is ferrite plus bainite plus martensite, with the volume fraction content of ferrite >10%, the volume fraction content of bainite >30%, and the volume fraction content of martensite >15%; the microscopic structure further comprises nanoscale precipitates in uniform dispersion distribution, the average size of precipitates being less than 20 nm.

Abstract: Disclosed is a high-yield-ratio cold-rolled dual-phase steel, having the following chemical elements in percentage by mass: 0.05%-0.08% of C, 0.9%-1.2% of Mn, 0.1%-0.6% of Si, 0.030%4060% of Nb, 0.030%-0.060% of Ti, 0.015%-0.045% of Al, and the balance being Fe and other inevitable impurities. A manufacturing method for the high-yield-ratio cold-rolled dual-phase steel, comprising: (1) smelting and casting; (2) hot rolling, wherein a casting blank is controlled and soaked at a temperature of 1200° C.-1250° C.; rolled with the finish rolling temperature being 840° C.-930° C.; cooled at a speed of 20° C./s-70° C./s, and then wound at the winding temperature being 570° C.-630° C.; (3) cold rolling; (4) annealing at the soaking temperature being 750° C.-790° C. for 40 s-200 s, cooling at a speed of 30° C./s-80° C./s, the start temperature of cooling is 650° C. to 730° C., the aging temperature is 200° C. to 260° C., and the overaging time is 100 s to 400 s; and (5) leveling.