Abstract: A shell, a battery cell, a battery, and an electric device. At least partial area of a shell 211 has a tensile strength Rm at a temperature of 25° C. At least part of the shell 211 comprises first shell walls 2112, the average thickness of the first shell walls 2112 is T, Rm and T satisfy the following: 250 MPa?Rm?2000 MPa, 0.05 mm?T?0.5 mm, and 60 mm·MPa?T×Rm?500 mm·MPa.

Abstract: Disclosed embodiments relate to MPD well drilling methods, for example detecting fluid gains or losses even in transient conditions. For example, data relating to one or more parameter of the drilling system may be corrected/filtered using one or more technique. The corrected data can be used to calculate flowrate difference (DeltaFR), and possible fluid losses or gains in the system can be detected by calculating a virtual trip tank (VTT) using DeltaFR. In some embodiments, the technique can compensate for drillstring movement. In some embodiments, an adaptive moving average may be applied to the data to reduce noise. In some embodiments, bilateral filtering may be applied to the data, for example to address issues arising from movement of a choke in the drilling system. In some embodiments, updated baselines may be applied to remove any offset. Systems related to such methods are also disclosed.

Abstract: An identity authentication method based on a covert channel, an apparatus thereof and an application thereof are provided. The identity authentication method includes: transmitting user identity information used for authentication in a covert channel or an overt channel, and generating misleading or even induced forged identity information for confused transmission in the channel; then dividing a key and transmitting the key in two channels, so that key management ability is enhanced, and difficulty of key interception is greatly improved; and in an encrypted communication stage, embedding some short tag information in the covert channel to continuously authenticate a client. The covert channel is also used to renegotiate about replacing the key when transmitting a certain amount of data or important information, thus improving security of communication data. Finally, a method of constructing a covert channel based on the order of the inter-packet delays is further provided.

Abstract: Disclosed is an apparatus for honeycomb ceramic-based plasma degradation of SF6 in the technical field of sulfur hexafluoride degradation, including a DBD reactor, where a gas supply unit is arranged on a left side of the DBD reactor, a power supply unit is arranged at a bottom of the DBD reactor, a treatment unit is arranged on a right side of the DBD reactor, and the DBD reactor is connected to the gas supply unit via a gas pipe and electrically connected to the power supply unit. The apparatus breaks away from the conventional single-tube structured inner electrode by adopting a novel detachable honeycomb ceramic structure as the inner electrode of the reactor; its porous structure provides good channels for gas flow and distribution; the porous channels facilitate the adsorption of catalysts and decomposition products, effectively promoting the degradation process.

Abstract: A battery cell, a battery, and an electric device. The battery cell comprises: an electrode assembly comprising a positive electrode sheet and a negative electrode sheet, the positive electrode sheet and the negative electrode sheet form a flat region; and a housing comprising a first wall portion and two second wall portions, the two second wall portions being respectively located on two sides of the flat region in a first direction. The first wall portion comprises a shell body and a pressure relief portion, wherein the shell body is arranged around the periphery of the pressure relief portion, a notch groove is formed in the pressure relief portion and has a first groove wall section obliquely extending in the first direction on a bottom wall thereof, and the first groove wall section is at an angle to the first direction.

Abstract: A housing, a battery cell, a battery, and an electrical device. An end portion of the housing along a first direction is provided with a housing opening, the housing comprises a first side plate and a second side plate arranged along the circumferential direction of the housing opening, a connecting plate is connected to the first side plate and the second side plate, at least part of an outer surface of the connecting plate comprises a curved face, the connecting plate comprises a first plate portion and a second plate portion, and on the first direction, the second plate portion is located on the side of the first plate portion close to the housing opening. The maximum thickness of the second plate portion is greater than or equal to the maximum thickness of the first plate portion.

Abstract: A battery cell may include a bare cell, a top cover, and a housing. The housing has an opening, the housing being connected to the top cover, the top cover covering the opening to form an accommodating space with the housing, the bare cell being disposed in the accommodating space, the opening being located on a side of the housing with the largest area. A side of the bare cell is provided with an electrode lead-out member, the housing comprising an electrode component or the housing being connected to an electrode component, the electrode lead-out member being connected to the electrode component, and the electrode lead-out member being a bent structure.

Abstract: The provided is an inflatable whitewater kayak (hereinafter referred to as the kayak) with a narrow hull and a U-shaped bottom, which is a high-pressure narrow-type bottom weighted boat. The high-pressure narrow-type bottom weighted boat includes an inflatable and deflatable tubular body, where the tubular body includes a bow, a middle segment, and a stern; the bow, the middle segment and the stern are connected sequentially; the middle segment includes a bottom plate and two side tubes; the two side tubes are symmetrically disposed at two sides of the bottom plate; the bottom plate and the two side tubes define a central seating area; the side tube includes at least two sidewall subtube portions; and for the single side tube, the sidewall subtube portions are connected sequentially along a vertical direction to form a whole.

Abstract: A battery cell is disclosed, where the battery cell includes: a housing, the housing including a bottom wall, a top plate, and a plurality of side walls, where the side walls connect the top plate and the bottom wall, and the bottom wall, the plurality of side walls, and the top plate form an accommodating space; a cell, disposed in the accommodating space; and a support plate, disposed in the accommodating space and is clamped between the side wall and the cell.

Abstract: A battery cell includes: a housing, where the housing forms an accommodating space; an electrode assembly, where the electrode assembly is disposed within the accommodating space; a top cover, where the top cover is connected to the housing and covers the accommodating space, the top cover is provided with a protrusion, the protrusion is located within the accommodating space, and the protrusion is configured to shield between the electrode assembly and at least a portion of the connection at which the top cover is connected to the housing.

Abstract: The disclosure provides a method, system, and apparatus for automatically sensing the orientation of a subcomponent of a drill string for connection of a diversion flow line to the side port of a subcomponent to enable continuous circulation. In one aspect, the disclosure provides an automated positioning system (APS) for a continuous circulation system (CCS). In one example, the APS includes: (1) an orientation detector configured to generate location signals representing an existing position of a subcomponent of a drill string according to an orientation indicator associated with the subcomponent, and (2) one or more processors to perform operations that include placing a side port of the subcomponent in position for connecting to a diversion flow line by moving the drill string according to the location signals and determining when the subcomponent is in the position based on the location signals.

Abstract: Collection devices with valves for liquid specimens are disclosed. In an embodiment, the disclosure provides a collection device including a reservoir having a sealed cavity, the sealed cavity being under a negative pressure; a delivery tube in communication with the sealed cavity of the reservoir and having a delivery inlet, a delivery outlet, and a valve disposed between the delivery inlet and the delivery outlet, the valve being configured to control the communication and blocking between the delivery inlet and the delivery outlet, and an angle being formed by an extension line of the delivery inlet an extension line of the delivery outlet; and a piercing component for piercing a tissue is connected with the delivery inlet of the delivery tube.

Abstract: An ammonium complex system-based method for separating and purifying lead, zinc, cadmium, and copper, comprising the following steps: a zinc-containing raw material is leached using a leach solution to produce a leached solution; a filtrate and a filter residue are produced by filtration; the filtrate is mixed with metal lead to displace copper, undergoes a solid-liquid separation to produce a first separated liquid, is mixed with metal cadmium to displace lead, undergoes a solid-liquid separation to produce a second separated liquid, is mixed with metal zinc to displace cadmium, and undergoes a solid-liquid separation to produce a third separated liquid; and, the third separated liquid is electrolyzed to produce metal zinc, and an electrolytic solution is returned to the leaching step.

Abstract: A scenario-differentiated network telemetry method is provided. The method is based on an SDN architecture, a control plane is separated from a data plane, the control plane is managed by a central controller, the data plane includes a network device to execute actual packet processing, and the central controller is utilized for decision-making across an entire network; the data plane employs a P4 programmable switch to support functions of network nodes; and units of the method include a network status collection unit, an operation mode switching unit, a probe frequency adjustment unit, and a path control unit, where the operation mode switching unit and the probe frequency adjustment unit are included in a telemetry control unit.

Abstract: A method for controlling a device for automatically adjusting an airway opening body position is provided. The device includes a horizontal base plate, a head support block, a back support plate, a neck support apparatus, a head cover assembly, and a programmable logic controller (PLC). The neck support apparatus is positioned between the head support block and the back support plate. The PLC is configured to controls a stroke of an electric cylinder according to the following equations: ?=1.235?+?, and ?=KX+B+C, where ? is a body position angle, the body position angle is an angle between a positive projection line of a connecting line from a mandibular angle to an external acoustic meatus on a symmetrical surface of a human body and the back support plate, and ? is a preset value ranging from 90° to 100°.

Abstract: A battery cell, a battery, an electric device, and a method for assembling a battery. The battery cell is configured for use in a battery, the battery cell including: a first wall, the first wall being provided with a recess recessed toward the interior of the battery cell, and the recess being configured to accommodate a first component of the battery.

Abstract: A battery cell, a battery and an electrical apparatus. The battery cell includes: an electrode terminal; a first wall, the first wall being provided with an electrode lead-out hole, and the electrode terminal and the electrode lead-out hole being arranged opposite to each other; and a sealing member, the sealing member being arranged around the electrode lead-out hole, the sealing member including an extension portion, the extension portion being at least partially arranged between the first wall and the electrode terminal, the extension portion being provided with one of a first protrusion and a first groove, the first wall being provided with the other one of the first protrusion and the first groove, and the first protrusion and the first groove being matched with each other.

Abstract: A battery cell is disclosed, including a housing, electrode terminals, and a protective member. The housing includes a wall portion and a fastener, where the fastener comprises a connecting portion and a pressing portion that together define a cavity. At least part of the electrode terminals is positioned within the cavity. The protective member includes a first protective portion covering the connecting portion and a second protective portion covering the pressing portion. The second protective portion extends beyond the pressing portion in a first direction. The structure reduces the likelihood of short circuits by shielding the pressing portion, thereby enhancing battery cell reliability.

Abstract: A portable quartz crystal microbalance (QCM) device comprises: a QCM resonator; a first printed circuit board assembly; a user interface; a data transmission means to communicate with a mobile device for data visualization, storage, and processing; a power source; and an enclosure, wherein the QCM resonator comprises a quartz oscillator having at least one lead and at least one characteristic resonant frequency, and is configured to modify the at least one characteristic resonant frequency in response to a quantity of adsorbed material on the quartz oscillator. A bioassay for determining the amount of a biological analyte in a fluid sample with the QCM comprises: selecting a bioprobe that selectively binds the biological analyte; binding the bioprobe onto the surface of the micropillars of resonant material; and detecting a response to adsorption of a biological analyte onto the micropillars of resonant material and bioprobe, measured as a frequency shift.

Abstract: A system can include a continuous circulation subcomponent, a robotic device, and a control system. The subcomponent can include a receiving area and can be associated with a drilling operation for forming a wellbore. The robotic device can include an end effector that can include a sensing device and tools corresponding to operations to facilitate continuous circulation in the wellbore. The control system can cause the robotic device to perform operations. The robotic device can align the end effector with the receiving area. The robotic device can determine whether a leak is present at the receiving area. The robotic device can connect, disconnect, or a combination thereof the diversion line with the receiving area to allow the continuous circulation during the drilling operation.