Abstract: A vacuum switching valve and a suction system having the same. The vacuum switching valve comprises: a valve body, comprising a first end and a second end, the second end being provided with an air inlet, an air outlet and a through hole; a valve element movably arranged in the valve body; a cylinder, the cylinder being connected to the first end and the valve element, the cylinder drives the valve element to move in the valve body, to close or open the air inlet; a stopper passing through the through hole, the stopper comprising a third end and a fourth end, the third end being connected to the valve element, the fourth end being located on the side of the through hole away from the valve element.

Abstract: In accordance with an embodiment, a data processing method includes: obtaining a first operation command, where the first operation command is used to perform data processing in a relational database; determining an acceleration policy of the first operation command, wherein the acceleration policy is used to accelerate a processing process of the first operation command; and performing an operation of the first operation command based on the acceleration policy.

Abstract: A case with screw thread in a sealed manner for communication equipment includes an upper cover and a bottom cover. The inner surface of the upper cover has an internal screw thread. The outer surface of the bottom cover has an external screw thread. When the external screw thread is fixed with the internal screw thread, the inner surface of the upper cover is in contact with the outer surface of the bottom cover in a sealed state, and the upper cover and the bottom cover form a receiving space. The case provides the following advantages: quickly and repeated assembly and disassembly; no need for any space for bolts so as to minimizes the size; without bolt, no need for washers or sealant; good sealing properties and good waterproof effect so as to prevent water from entering the case.

Abstract: A data processing method includes receiving, by a virtual machine, an I/O access request. The I/O access request is used to access data, the I/O access request includes a type of hardware data used to indicate a working status of a virtual I/O device, and the virtual I/O device is obtained after the I/O device is virtualized. The method also includes identifying, by the virtual machine, that the type of the hardware data in the I/O access request is first-type data. The first-type data is hardware data of the virtual I/O device that remains unchanged in a data processing process. The method further includes obtaining, by the virtual machine, to-be-accessed data from a first memory space. The first memory space is memory storage space in the data processing system.

Abstract: Embodiments can provide a smart interface card control method and apparatus. Under such a method or apparatus, after a smart interface card is inserted into a smart interface card slot of a host, a virtualized management interface can be registered with the host using a protocol stack of a preset type. A virtual link can be created to connect a baseboard management controller management interface to the virtual link. A management address configuration instruction sent by the host can be received for configuring a management address of the management interface. A control instruction sent by the host by using the management address can be received, and the control instruction to the BMC management interface can be sent by using the virtual link. According to the foregoing smart interface card control method and apparatus, scalability of the smart interface card can be improved.

Abstract: A smart interface card control method and apparatus are disclosed. The method includes: after a smart interface card is inserted into a smart interface card slot of a host, registering a virtualized management interface with the host by using a protocol stack of a preset type (S102); creating a virtual link, and connecting a baseboard management controller BMC management interface to the virtual link (S104); receiving a management address configuration instruction sent by the host, and configuring a management address of the management interface according to the management address configuration instruction (S106); and receiving a control instruction that is sent by the host by using the management address, and sending the control instruction to the BMC management interface by using the virtual link (S108). According to the foregoing smart interface card control method and apparatus, scalability of the smart interface card can be improved.

Abstract: A hollow-structure metal grating is provided. The hollow-structure metal grating includes a substrate, a number of connecting metal layers, and a number of hollow metal protrusions spaced and located on a surface of the substrate. A space is defined between each of the number of hollow metal protrusions and the substrate.

Abstract: A method for making a hollow-structure metal grating is provided. The method includes the following steps. First, a substrate is provided. Second, a metal layer is located on a surface of the substrate. Third, a patterned mask layer is formed on a surface of the metal layer. The patterned mask layer is made of a chemical amplified photoresist. Fourth, the surface of the metal layer exposed out of the patterned mask layer is plasma etched. Lastly, the patterned mask layer on the surface of the metal layer is dissolved.

Abstract: A method for making a hollow-structure metal grating is provided. The method includes providing a substrate, forming a patterned mask layer on a surface of the substrate, applying a metal layer with a thickness greater than 10 nanometers on the patterned mask layer, and removing the patterned mask layer by a washing method using organic solvent. The patterned mask layer includes a plurality of first protruding structures and a plurality of first cavities arranged in intervals.

Abstract: A bowl shaped metal nanostructure array includes a substrate having a surface and a number of particle-in-bowl structures located on the surface of the substrate. Each particle-in-bowl structures includes a bowl shaped concave structure and a protruding member protruding from the bowl shaped concave structure. The protruding member is integrated with the bowl shaped concave structure.

Abstract: A Raman detecting system includes a bowl shaped metal nanostructure array configured to load a sample, a projecting module configured to project a beam of light to the bowl shaped metal nanostructure array, and a receiving module configured to collect the light scattered by the bowl shaped metal nanostructure array. The bowl shaped metal nanostructure array includes a substrate having a surface and a number of particle-in-bowl structures located on the surface of the substrate. Each particle-in-bowl structure includes a bowl shaped concave structure and a protruding member protruding from the bowl shaped concave structure. The protruding member is integrated with the bowl shaped concave structure.

Abstract: A method for making bowl shaped metal nanostructure includes providing a metal layer located on a substrate. The metal layer has a top surface away from the substrate. A pattern mask layer is located on the top surface of the metal layer, wherein portion of the top surface of the metal layer is covered by the pattern mask layer. A plurality of flaws is formed in the pattern mask layer by annealing above substructure. After annealing, the substructure is etched by physical etching gas and reactive etching gas, to form the bowl shaped metal nanostructure.

Abstract: A Raman detecting system includes a bowl shaped metal nanostructure array configured to load a sample, a projecting module configured to project a beam of light to the bowl shaped metal nanostructure array, and a receiving module configured to collect the light scattered by the bowl shaped metal nanostructure array. The bowl shaped metal nanostructure array includes a substrate having a surface and a number of particle-in-bowl structures located on the surface of the substrate. Each particle-in-bowl structure includes a bowl shaped concave structure and a protruding member protruding from the bowl shaped concave structure. The protruding member is integrated with the bowl shaped concave structure.

Abstract: A method for making bowl shaped metal nanostructure includes providing a metal layer located on a substrate. The metal layer has a top surface away from the substrate. A pattern mask layer is located on the top surface of the metal layer, wherein portion of the top surface of the metal layer is covered by the pattern mask layer. A plurality of flaws is formed in the pattern mask layer by annealing above substructure. After annealing, the substructure is etched by physical etching gas and reactive etching gas, to form the bowl shaped metal nanostructure.

Abstract: A bowl shaped metal nanostructure array includes a substrate having a surface and a number of particle-in-bowl structures located on the surface of the substrate. Each particle-in-bowl structures includes a bowl shaped concave structure and a protruding member protruding from the bowl shaped concave structure. The protruding member is integrated with the bowl shaped concave structure.

Abstract: A method for making a hollow-structure metal grating is provided. The method includes the following steps. First, a substrate is provided. Second, a metal layer is located on a surface of the substrate. Third, a patterned mask layer is formed on a surface of the metal layer. The patterned mask layer is made of a chemical amplified photoresist. Fourth, the surface of the metal layer exposed out of the patterned mask layer is plasma etched. Lastly, the patterned mask layer on the surface of the metal layer is dissolved.

Abstract: A hollow-structure metal grating is provided. The hollow-structure metal grating includes a substrate, a number of connecting metal layers, and a number of hollow metal protrusions spaced and located on a surface of the substrate. A space is defined between each of the number of hollow metal protrusions and the substrate.

Abstract: A method for making a hollow-structure metal grating is provided. The method includes providing a substrate, forming a patterned mask layer on a surface of the substrate, applying a metal layer with a thickness greater than 10 nanometers on the patterned mask layer, and removing the patterned mask layer by a washing method using organic solvent. The patterned mask layer includes a plurality of first protruding structures and a plurality of first cavities arranged in intervals.