Abstract: A plant leaves-derived carbon material doped with two metals and preparation and use thereof are provided, the carbon material prepared by carbonizing, in an inert atmosphere, plant leaves which have absorbed ions of two metals M1 and M2. The metal M1 is Co, Mn, or Fe. The metal M2 is Ni, Cu, or Zn. The carbon material can be used as an efficient, green, and safe catalyst for the selective oxidation of cycloalkanes to produce cycloalkanols and cycloalkanones, and enable an increased selectivity of the target products (thus less by-products), a low yield of cycloalkyl peroxides, reduced reaction temperature, low environmental impact, and safe production.

Abstract: A plant leaves-derived carbon material doped with two metals and preparation and use thereof are provided, the carbon material prepared by carbonizing, in an inert atmosphere, plant leaves which have absorbed ions of two metals M1 and M2. The metal M1 is Co, Mn, or Fe. The metal M2 is Ni, Cu, or Zn. The carbon material can be used as an efficient, green, and safe catalyst for the selective oxidation of cycloalkanes to produce cycloalkanols and cycloalkanones, and enable an increased selectivity of the target products (thus less by-products), a low yield of cycloalkyl peroxides, reduced reaction temperature, low environmental impact, and safe production.

Abstract: The present invention belongs to the technical field of turbine cooling of aero-engine and gas turbine, and relates to the honeycomb-like helically cavity cooling structure of turbine blade. The honeycomb-like helically cavity cooling structure of turbine blade includes hollow turbine blade, honeycomb-like helically cavity and pin fins. Some cooling channels are arranged inside the hollow the hollow turbine blade, the cooling gas flows through the tunnels and cools the blade. Multi-arrays of honeycomb-like helically cavity are arranged in the blade wall, for cooling gas to enter and convective cooling. A cylindrical pin fin is arranged in the center of the honeycomb-like helically cavity. In each unit, the inlet hole and film hole are located on both sides of the blade wall, and the center lines of them are parallel in the same vertical plane.

Abstract: A composite molecular sieve membrane, preparation method and use thereof are provided in the embodiments. The composite molecular sieve membrane includes a support layer and a molecular sieve membrane layer, wherein the support layer is a high-porosity and porous ceramic which is made of nano- or submicron ceramic powder materials or ceramic material precursors prepared through an electrospinning process. The high-porosity and porous ceramic, is adjustable from 40% to 83%. The composite molecular sieve membrane of the embodiments uses the porous ceramic prepared through an electrospinning process as the support layer, and the support layer has a flat and continuous surface, high porosity, uniform and adjustable pore sizes, low-tortuosity pore channels, and high mechanical strength; the flux of the composite molecular sieve membrane is increased, besides, the seed crystals can attach effectively due to the fibrous pore channels of the support layer, ensuring the adhesion amount of seed crystals.

Abstract: A nanoporous ceramic membrane and preparation method thereof is provided. The nanoporous ceramic membrane is prepared by halloysite nanotubes (HNTs), and its porosity is between 35% to 85%. This method comprises steps as following: HNTs and polymers with a certain ratio are dispersed in organic solvent, and HNTs/polymer composite fibers are prepared through electrospinning method; after the HNTs/polymers composite fibers are laminated, they are sintered at high temperature in a certain or vacuum atmosphere, and a nanoporous ceramic membrane is obtained. Ceramic membrane prepared by this method is corrosion resistant, thermal resistant, and have large specific surface area, it may widely applied in the field of filtration, catalyst carrier and purification of high-temperature gas, etc.

Abstract: A server system includes a PCH, a BMC, a BIOS with a write protect end, and a controlling circuit. The BIOS includes a write protect end. The BMC includes a memory portion storing updated server data. The BIOS is electrically connected to the PCH and is electrically connected to the BMC. The controlling circuit includes a first input end and an output end. The first input end is electrically connected to the PCH. The output end is electrically connected to the write protect end. The controlling circuit is configured so that when an error in the BIOS is detected, the write protect end is opened and the BIOS is updated from the memory portion of the BMC.

Abstract: An interface device includes a motherboard, a DVI female interface, a DVI male interface, a display, and an eSATA connector. The motherboard includes a SATA controller having at least one group of differential signal pins. The DVI female interface is electronically coupled to the group of differential signal pins. The DVI male interface is coupled to the DVI female interface. The display is electronically coupled to the DVI male interface. The eSATA connector is positioned on a display and includes at least one group of differential signal pins electrically coupled to the DVI male interface. The differential signal pins of the eSATA connector configured to be in communication with the differential signal pins of the SATA controller via the DVI male interface and the DVI female interface.

Abstract: A server system includes a PCH, a BMC, a BIOS with a write protect end, and a controlling circuit. The BIOS includes a write protect end. The BMC includes a memory portion storing updated server data. The BIOS is electrically connected to the PCH and is electrically connected to the BMC. The controlling circuit includes a first input end and an output end. The first input end is electrically connected to the PCH. The output end is electrically connected to the write protect end. The controlling circuit is configured so that when an error in the BIOS is detected, the write protect end is opened and the BIOS is updated from the memory portion of the BMC.

Abstract: A method for testing Bit Error Rate (BER) of a network module of a communication device includes executing a BER test program to begin a BER test; obtaining a current time and a test data of the BER test program; recording the current time and the test data corresponding to the current time in the test data recording document. The method also determines whether a time interval between the current time and a time when a last test data was recorded is greater than a predetermined value, and if so records a new time and a new test data.

Abstract: A delay circuit for power sequencing in a computer includes an oscillator; an input pin; a counter; a register; and a comparing controller. The counter detects a voltage of the input pin when each clock signal arrives, resets a number counted by the counter when the voltage of the input pin is detected at logic-low electrical level, and adds a predetermined number when the voltage of the input pin is detected at logic-high electrical level. The controller compares the total number counted by the counter with a preset number, and outputs a control signal when the numbers match. The control signal controls a connected logic circuit to work according to a power sequence.

Abstract: A nanoporous ceramic membrane and preparation method thereof is provided. The nanoporous ceramic membrane is prepared by halloysite nanotubes (HNTs), and its porosity is between 35% to 85%. This method comprises steps as following: HNTs and polymers with a certain ratio are dispersed in organic solvent, and HNTs/polymer composite fibers are prepared through electrospinning method; after the HNTs/polymers composite fibers are laminated, they are sintered at high temperature in a certain or vacuum atmosphere, and a nanoporous ceramic membrane is obtained. Ceramic membrane prepared by this method is corrosion resistant, thermal resistant, and have large specific surface area, it may widely applied in the field of filtration, catalyst carrier and purification of high-temperature gas, etc.