Abstract: A clock driver comprises: an input multiplexer for receiving a plurality pairs of input clock signals and an input selection signal, and for selectively outputting one pair of the plurality pairs of input clock signals according to the input selection signal; a phase locking loop (PLL) coupled to the input multiplexer to receive one pair of the plurality pairs of input clock signals, and for generating a PLL clock signal according to the received pair of input clock signals; at least two sets of output multiplexers coupled to the PLL to receive the PLL clock signal and an output selection signal, wherein each set of output multiplexers are configured to selectively output the PLL clock signal as a set of output clock signals according to the output selection signal to drive at least one group of memory chips; and a control module configured to detect toggling of the plurality pairs of input clock signals and generate the input selection signal and the output selection signal based on a detection result of the

Abstract: An apparatus for controlling access to a memory device comprising rows of memory units is provided. The apparatus comprises: an operation monitor configured to track memory operations to the rows of memory units of the memory device; a row hammer counter configured to determining, for each of the rows of memory units, row hammer effects experienced by the row of memory units due to the memory operations to the other rows of memory units of the memory device; a mitigation module configured to initiate, for each of the rows of memory units, row hammer mitigation in case that accumulated row hammer effects experienced by the row of memory units reach a predetermined threshold; and a virtual host module configured to perform the row hammer mitigation targeting a row of memory units in response to the initiation of row hammer mitigation for the row of memory units by the mitigation module.

Abstract: Provided are Enterococcus lactis, a drug for preventing or treating tumor, and use thereof, relating to the technical field of biomedicines. Novel Enterococcus lactis is separated and chosen, and the Enterococcus lactis has an important influence on the effect of tumor immunotherapy for cancer patients. Gut microorganisms and immune cells can interact with each other to jointly regulate the human immune system. The provided Enterococcus lactis can induce the differentiation and maturation of iDC (immature DC) cells, and mature DC can effectively activate T cells and increase the infiltration of tumor infiltrating lymphocytes having anti-tumor activity, thereby killing tumor cells. In addition, the provided Enterococcus lactis can induce the differentiation of M0 type macrophages into M1 or M2 type cells.

Abstract: An apparatus for controlling access to a memory device comprising rows of memory units is provided. The apparatus comprises: an operation monitor configured to track memory operations to the rows of memory units of the memory device; a row hammer counter configured to determining, for each of the rows of memory units, row hammer effects experienced by the row of memory units due to the memory operations to the other rows of memory units of the memory device; a mitigation module configured to initiate, for each of the rows of memory units, row hammer mitigation in case that accumulated row hammer effects experienced by the row of memory units reach a predetermined threshold; and a virtual host module configured to perform the row hammer mitigation targeting a row of memory units in response to the initiation of row hammer mitigation for the row of memory units by the mitigation module.

Abstract: A clock driver comprises: an input multiplexer for receiving a plurality pairs of input clock signals and an input selection signal, and for selectively outputting one pair of the plurality pairs of input clock signals according to the input selection signal; a phase locking loop (PLL) coupled to the input multiplexer to receive one pair of the plurality pairs of input clock signals, and for generating a PLL clock signal according to the received pair of input clock signals; at least two sets of output multiplexers coupled to the PLL to receive the PLL clock signal and an output selection signal, wherein each set of output multiplexers are configured to selectively output the PLL clock signal as a set of output clock signals according to the output selection signal to drive at least one group of memory chips; and a control module configured to detect toggling of the plurality pairs of input clock signals and generate the input selection signal and the output selection signal based on a detection result of the

Abstract: Various embodiments include methods for improving navigation by a processor of a robotic device. Such embodiments may include initiating a start of a predetermined time period associated with semantic information extraction, and determining whether an adverse event related to one or more sensors of the robotic device is detected. Such embodiments may also include identifying a current time slot of the predetermined time period, identifying a current estimated position and orientation of the robotic device, and recording updates to semantic information stored for the one or more sensor based on the identified current time slot and the current estimated position and orientation of the robotic device in response to determining that an adverse event related to one or more sensors of the robotic device is detected.

Abstract: The present disclosure relates to a high and low pressure manifold fluid supply system for fracturing units, including: a trailer, a high and low pressure manifold arranged on the trailer, a support frame arranged on a platform of the trailer, and a power distribution switch cabinet arranged on the support frame, which is configured to be electrically connected to the electrically-driven fracturing units and configured to distribute electricity to the electrically-driven fracturing units. Through the high and low pressure manifold fluid supply system integrated with electricity supply facilities therein according to the present disclosure, the electrically-driven fracturing units are powered, in this way, the electricity supply and distribution system in the well site can be effectively simplified, the connection distance of the cables can be shorten, and further the time spent on connection can be saved, thereby improving the well site layout efficiency.

Abstract: Disclosed is a method for preparing acetaldehyde from acetylene under the catalysis of a ZAPO molecular sieve. The method comprises the steps of pre-heating an acetylene raw material gas and water, subjecting same to continuous hydration in a fluidized bed under the catalysis of the ZAPO molecular sieve to prepare acetaldehyde, and then subjecting same to separation, absorption and rectification to obtain an acetaldehyde product, wherein the catalyst can be continuously regenerated for use. The process of the present application is simple, stable and efficient, solves the problem of the dependence nature of the production of acetaldehyde by means of acetylene hydration on a mercury catalyst, avoids the harm caused by mercury to the human body and the environment, and has higher production and use values.

Abstract: The present disclosure relates to a high and low pressure manifold liquid supply system for fracturing units, including: a trailer, a high and low pressure manifold arranged on the trailer, a support frame arranged on a platform of the trailer, and a power distribution switch cabinet arranged on the support frame, which is configured to be electrically connected to the electrically-driven fracturing units and configured to distribute electricity to the electrically-driven fracturing units. Through the high and low pressure manifold liquid supply system integrated with electricity supply facilities therein according to the present disclosure, the electrically-driven fracturing units are powered, in this way, the electricity supply and distribution system in the well site can be effectively simplified, the connection distance of the cables can be shorten, and further the time spent on connection can be saved, thereby improving the well site layout efficiency.

Abstract: The present application relates to a cable laying device. The cable laying device is used for transporting and laying a cable, and comprises: a base section and an extension section with adjustable length, wherein the extension section and the base section are connected to each other at their longitudinal ends and are moveable relative to each other, the base section is configured to include one elongated cable carrier, and the extension section is configured to include at least one elongated cable carrier, wherein for the base section and the extension section, the cable carrier a carrying portion for holding the cables, wherein the carrying portion enables the cables to move along with the cable carriers of the base section and the extension section, and wherein the height of the base section and/or the extension section can be adjusted.

Abstract: The present disclosure relates to a high and low pressure manifold liquid supply system for fracturing units, including: a trailer, a high and low pressure manifold arranged on the trailer, a support frame arranged on a platform of the trailer, and a power distribution switch cabinet arranged on the support frame, which is configured to be electrically connected to the electrically-driven fracturing units and configured to distribute electricity to the electrically-driven fracturing units. Through the high and low pressure manifold liquid supply system integrated with electricity supply facilities therein according to the present disclosure, the electrically-driven fracturing units are powered, in this way, the electricity supply and distribution system in the well site can be effectively simplified, the connection distance of the cables can be shorten, and further the time spent on connection can be saved, thereby improving the well site layout efficiency.

Abstract: A clock driver comprises: a clock detector for receiving a plurality pairs of input clock signals of a predetermined clocking protocol, and for generating a protocol identifier indicative of the predetermined clocking protocol; a phase locking loop (PLL) module coupled to receive at least one pair of the plurality pairs of input clock signals, and for generating at least one pair of reference clock signals according to the received at least one pair of input clock signal; and a plurality of multiplexers coupled to the clock detector and to the PLL module. Each multiplexer is configured for receiving one pair of the plurality pairs of input clock signals and one pair of the at least one pair of reference clock signals, and selectively outputting, according to the protocol identifier, the pair of input clock signals and the pair of reference clock signals to drive a group of memory chips.

Abstract: The present application relates to a cable laying device. The cable laying device is used for transporting and laying a cable, and comprises: a base section and an extension section with adjustable length, wherein the extension section and the base section are connected to each other at their longitudinal ends and are moveable relative to each other, the base section is configured to include one elongated cable carrier, and the extension section is configured to include at least one elongated cable carrier, wherein for the base section and the extension section, the cable carrier a carrying portion for holding the cables, wherein the carrying portion enables the cables to move along with the cable carriers of the base section and the extension section, and wherein the height of the base section and/or the extension section can be adjusted.

Abstract: Various embodiments include processing devices and methods for relocation and reinitialization for a robotic device. Various embodiments may include concurrently relocating a second pose of the robotic device and reinitializing a third pose of the robotic device in response to failing to determine a first pose of the robotic device in the environment and determining that tracking of the robotic device is lost. Various embodiments may include pre-relocating a second pose of the robotic device in the environment in response to failing to determine the first pose of the robotic device in the environment and determining that tracking of the robotic device is lost, relocating a third pose of the robotic device in response to successfully pre-relocating the second pose of the robotic device, and reinitializing a fourth pose of the robotic device in response to unsuccessfully pre-relocating the second pose of the robotic device.

Abstract: The present disclosure provides a fracturing fluid mixing equipment including a clear water supply system, at least two mixing systems, at least one powder tank, at least two powder conveying systems, a mixing tank, a feeding system and a power system. The clear water supply system has two parallel water supply paths which are connected to the mixing system and the mixing tank respectively. The powder conveying system is connected to the powder tank. There are same number of powder conveying systems and mixing systems which are connected in one-to-one correspondence. The mixing system is connected into the mixing tank. The feeding system adds powder by pneumatic conveying. The power system provides driving force by pure electric power and/or electro-hydraulic power. According to present disclosure, the power system can reduce fuel consumption and exhaust emissions.

Abstract: Various embodiments include processing devices and methods for initializing an image sensor of a robotic vehicle. In some embodiments, a processor of the robotic vehicle may extract first features from a captured image of the target image, may extract second features from a predefined image pyramid of the target image, may match first features and second features, and may estimate an image sensor pose based on matched features and known dimensions of the target image. In some embodiments, the processor may estimate an image or to image sensor pose based on matched features and a translation and/or rotation of the robotic vehicle. In some embodiments, the processor may determine a coordinate system for the robotic vehicle based on one or more image sensor poses.

Abstract: Various embodiments include processing devices and methods for relocation and reinitialization for a robotic device. Various embodiments may include concurrently relocating a second pose of the robotic device and reinitializing a third pose of the robotic device in response to failing to determine a first pose of the robotic device in the environment and determining that tracking of the robotic device is lost. Various embodiments may include pre-relocating a second pose of the robotic device in the environment in response to failing to determine the first pose of the robotic device in the environment and determining that tracking of the robotic device is lost, relocating a third pose of the robotic device in response to successfully pre-relocating the second pose of the robotic device, and reinitializing a fourth pose of the robotic device in response to unsuccessfully pre-relocating the second pose of the robotic device.

Abstract: Various embodiments include processing devices and methods for navigation of a robotic vehicle. Various embodiments may include a rearward-facing image sensor mounted such that its plane angle aligns with a navigation plane of the robotic vehicle. In various embodiments, the image sensor of the robotic vehicle may capture images and a processor of the robotic vehicle may execute simultaneous localization and mapping (SLAM) tracking using the captured images. Embodiments may include a processor of the robotic vehicle determining whether the robotic vehicle is approaching a barrier. If the robotic vehicle is approaching a barrier, the processor may determine whether a rotation angle of the image sensor of the robotic vehicle exceeds a rotation threshold. If the rotation angle exceeds the rotation threshold then the processor may determine whether SLAM tracking is stable; and reinitialize a pose of the robotic vehicle in response to determining that SLAM tracking is not stable.

Abstract: Various embodiments include processing devices and methods for initializing an image sensor of a robotic vehicle. In some embodiments, a processor of the robotic vehicle may extract first features from a captured image of the target image, may extract second features from a predefined image pyramid of the target image, may match first features and second features, and may estimate an image sensor pose based on matched features and known dimensions of the target image. In some embodiments, the processor may estimate an image or to image sensor pose based on matched features and a translation and/or rotation of the robotic vehicle. In some embodiments, the processor may determine a coordinate system for the robotic vehicle based on one or more image sensor poses.

Abstract: Various embodiments include processing devices and methods for classifying areas close to the robotic vehicle as feature-rich or feature-poor based, at least in part, on identified environmental features. A processor may select a target position based, at least in part, on the classified areas and the path costs, and initiate movement of the robotic vehicle toward the selected target position. Occasionally during transition of the robotic vehicle, the processor may determine whether the robotic vehicle has reached the target position and in response to determining that the robotic vehicle has not reached the target position, the processor may adjust the robotic vehicle's trajectory. For example, the processor may perform localization of the robotic vehicle based, at least in part, on the classified areas and may also modify a path of the robotic vehicle to the target position based, at least in part, on the localization and the classified areas.