Abstract: Provided is a device control method, which is applied in an electronic device. The electronic device includes a retractable display screen. The method includes: determining a second display content to be displayed in addition to a first display content currently displayed; controlling, based on the second display content, the retractable display screen to stretch, for adding a display region beyond a current display region used for displaying the first display content; and displaying the second display content in the added display region, and continuing displaying the first display content in the current display region.

Abstract: In one aspect, the disclosure relates to an oxygen-deficient mixed metal perovskite having the formula SrxA1-xFeyB1-yO3-?, wherein A can be Ca, K, Y, Ba, La, Sm, or any combination thereof; wherein B can be Co, Cu, Mn, Mg, Ni, Ti, or any combination thereof; wherein x is from 0 to 1; wherein y is from 0 to 1; and wherein ? is from 0 to 0.7. Also disclosed are redox catalysts comprising the oxygen-deficient mixed metal perovskites and methods for chemical looping air separation, chemical looping CO2 splitting, and chemical looping alkane conversion using the disclosed catalysts.

Abstract: An operation locking device for a climb-free system includes a locking assembly, a fixing block and a triggering assembly. The fixing block is mounted on a climb-free system trolley. The locking assembly is connected to the fixing block by the triggering assembly. The triggering assembly is configured to control the locking assembly to be switchable between a locked state and an unlocked state. When the climb-free system trolley is out-of-control, the triggering assembly triggers the locking assembly to switch to the locked state and to be clamped in a sliding rail, such that the climb-free system trolley stops operating. When the climb-free system trolley needs to adjust a working position by sliding up and down, the triggering assembly triggers the locking assembly to switch to the unlocked state and to be disengaged from the sliding rail.

Abstract: A two-stage venturi cooler comprises a first tubular conduit having a longitudinal axis, the first elongate tubular conduit having an exhaust gas inlet at one end, a mixed gas outlet at an opposing end, and a cooling gas inlet, wherein structures inside the first stage define a venturi that forms a column of mixed gas, wherein the column of mixed gas comprises a ring of exhaust gas surrounding a core of cooling gas; and a second tubular conduit that is coaxial with the first tubular conduit, wherein the second tubular conduit has a mixed gas inlet at one end and a mixed gas outlet at an opposing end, and wherein the mixed gas inlet is to receive the column of mixed gas and to surround the column of mixed gas with an entrained column of ambient air.

Abstract: A method including receiving a reservation request for a preset service initiated by a preset instant messaging application; determining a service mode designated by the reservation request; and responding to the reservation request according to the service mode to enable an initiator of the reservation request to obtain the preset service. The technical solution according to the present disclosure helps a user achieve a convenient and fast service reservation operation.

Abstract: A two-stage venturi cooler comprises a first tubular conduit having a longitudinal axis, the first elongate tubular conduit having an exhaust gas inlet at one end, a mixed gas outlet at an opposing end, and a cooling gas inlet, wherein structures inside the first stage define a venturi that forms a column of mixed gas, wherein the column of mixed gas comprises a ring of exhaust gas surrounding a core of cooling gas; and a second tubular conduit that is coaxial with the first tubular conduit, wherein the second tubular conduit has a mixed gas inlet at one end and a mixed gas outlet at an opposing end, and wherein the mixed gas inlet is to receive the column of mixed gas and to surround the column of mixed gas with an entrained column of ambient air.

Abstract: A shroud (102) for an aftertreatment device (100) for treating exhaust gas from an internal combustion engine comprises a stepped conduit (126) configured to be disposed over an upper surface of the aftertreatment device (100) and extending over substantially the entire length of the aftertreatment device (100), wherein the stepped conduit (126) is configured to channel a flow of cleaning air longitudinally along the outer and upper surface of the aftertreatment device (100), wherein an inner surface of the stepped conduit (126) defines at least a first downwardly extending step (134, 136, 138) and a second downwardly extending step (134, 136, 138) that are spaced apart along the length of the aftertreatment device (100), to direct at least a portion of the flow of cleaning air downward.

Abstract: A bear bile macromolecular extract with anti-HCV virus function is disclosed. A preparation method comprises the following steps of: taking fresh bear bile or dissolving bear bile powder with water, centrifuging it by a molecular sieve filter membrane with molecular weight cut-off of 100,000 or an ultrafiltration membrane, filtering to obtain sediment, dissolving the sediment with water, adding the solution to sephadex column, separating the solution by using water or buffer as elution solvent, and freeze-drying the eluent to obtain the bear bile macromolecular extract. Experiments show that the bear bile macromolecular extract has anti-HCV virus function and can be used for treating hepatitis C.

Abstract: An agricultural harvester (100) has a chassis (106) supported on a plurality of wheels (110) for travel over the ground; a harvesting implement (104) supported on the front of the chassis (106); an internal combustion engine (108) disposed on the chassis (106) behind the harvesting implement (104); a radiator (112) coupled to the internal combustion engine (108) to transfer heat from engine coolant to ambient air; a fan (109) disposed to draw a flow of cooling air through the radiator having a first flow rate; and a conduit (114) configured to conduct substantially the entire first flow rate of air to the radiator (112). The conduit defines a lower air-impermeable enclosure surrounding the inlet of the radiator fixed to an upper enclosure comprising a plurality of screen walls for passing substantially the entire flow of cooling air therethrough.

Abstract: A bear bile macromolecular extract with anti-HCV virus function is disclosed. A preparation method comprises the following steps of: taking fresh bear bile or dissolving bear bile powder with water, centrifuging it by a molecular sieve filter membrane with molecular weight cut-off of 100,000 or an ultrafiltration membrane, filtering to obtain sediment, dissolving the sediment with water, adding the solution to sephadex column, separating the solution by using water or buffer as elution solvent, and freeze-drying the eluent to obtain the bear bile macromolecular extract. Experiments show that the bear bile macromolecular extract has anti-HCV virus function and can be used for treating hepatitis C.