Abstract: A micro-nano incremental mechanical surface treatment method, comprising the following steps: using a modification tool having a designable end to contact a surface of a substrate material, rotating the modification tool in a local region and compressing the material surface, presetting processing parameters by means of 3D modeling software, and after the tool has processed the entire surface, enabling the tool to move downwards to the indented surface compressed previously. The process continues until the surface material is compressed to a pre-defined thickness, thereby achieving the goals of grain refinement and surface performance improvement. By means of the present method, a workpiece having a complex shape can be flexibly and designably surface modified. The method has the advantages of high bonding strength, no pollution, and low cost.

Abstract: An inlet guide vane mechanism comprises: a flow guide body having a front end section, a middle section and a rear end section, wherein the front end section, the middle section and the rear end section respectively have streamline contours in symmetry about the impeller axis and are transitionally connected by smooth curved surfaces, the flow guide body comprises an air inlet pipe arranged along the impeller axis, one end of the air inlet pipe being fixed at the front end section of the flow guide body, and the other end thereof being fixed at the rear end section of the flow guide body; a support structure for fixing the flow guide body at the air inlet end of the centrifugal compressor; and a plurality of inlet guide vanes rotatably fixed in the circumferential direction of the middle section of the flow guide body through a rotating shaft thereof, respectively.

Abstract: A locking structure of a compressor impeller, which includes: a rotary shaft; a lock nut arranged on an end of the rotary shaft by means of a threaded connection and provided with waist-shaped holes extending along a circumferential direction thereof; an impeller sleeved on the end of the rotary shaft and located on an inner side of the lock nut, the impeller is provided with threaded holes in communication with the waist-shaped holes of the lock nut; a nose piece located on an outer side of the lock nut and provided with through holes in communication with the waist-shaped holes of the lock nut; and bolts passing through the through holes and the waist-shaped holes in turn into the threaded holes, thereby fixing the nose piece, the lock nut and the impeller together.

Abstract: An inlet guide vane mechanism comprises: a flow guide body having a front end section, a middle section and a rear end section, wherein the front end section, the middle section and the rear end section respectively have streamline contours in symmetry about the impeller axis and are transitionally connected by smooth curved surfaces, the flow guide body comprises an air inlet pipe arranged along the impeller axis, one end of the air inlet pipe being fixed at the front end section of the flow guide body, and the other end thereof being fixed at the rear end section of the flow guide body; a support structure for fixing the flow guide body at the air inlet end of the centrifugal compressor; and a plurality of inlet guide vanes rotatably fixed in the circumferential direction of the middle section of the flow guide body through a rotating shaft thereof, respectively.

Abstract: A locking structure of a compressor impeller, which includes: a rotary shaft; a lock nut arranged on an end of the rotary shaft by means of a threaded connection and provided with waist-shaped holes extending along a circumferential direction thereof; an impeller sleeved on the end of the rotary shaft and located on an inner side of the lock nut, the impeller is provided with threaded holes in communication with the waist-shaped holes of the lock nut; a nose piece located on an outer side of the lock nut and provided with through holes in communication with the waist-shaped holes of the lock nut; and bolts passing through the through holes and the waist-shaped holes in turn into the threaded holes, thereby fixing the nose piece, the lock nut and the impeller together.

Abstract: A micro-nano incremental mechanical surface treatment method, comprising the following steps: using a modification tool having a designable end to contact a surface of a substrate material, rotating the modification tool in a local region and compressing the material surface, presetting processing parameters by means of 3D modeling software, and after the tool has processed the entire surface, enabling the tool to move downwards to the indented surface compressed previously. The process continues until the surface material is compressed to a pre-defined thickness, thereby achieving the goals of grain refinement and surface performance improvement. By means of the present method, a workpiece having a complex shape can be flexibly and designably surface modified. The method has the advantages of high bonding strength, no pollution, and low cost.

Abstract: Disclosed are a resistor, a heat dissipater and a combinatory device of the resistor and the heat dissipater, and relates to the field of power electronics. The resistor is cylindrical, and comprises a metal end, an insulating part, a casing, metal bars, a resistor wire, thermally conductive insulating fillers and a metal connection mechanism. The metal connection mechanism of the resistor and the heat dissipater are connected by means of direct contact. The structure and the connection method can shorten the length of the resistor, completely insulate the electrical circuits of the resistor from the possible leakage of the water inlet- and outlet-pipe of the heat dissipater, and enable the combinatory device of the resistor and the heat dissipater to be structurally more compact and the connections thereof cleaner.

Abstract: A system and method performing a medical imaging process includes arranging a subject to receive solution comprising nanodiamonds, performing an MRI imaging process to acquire data from the subject, and reconstructing the data to generate a report indicating a spatial distribution of nanodiamonds in the subject.

Abstract: Disclosed are a resistor, a heat dissipater and a combinatory device of the resistor and the heat dissipater, and relates to the field of power electronics. The resistor is cylindrical, and comprises a metal end, an insulating part, a casing, metal bars, a resistor wire, thermally conductive insulating fillers and a metal connection mechanism. The metal connection mechanism of the resistor and the heat dissipater are connected by means of direct contact. The structure and the connection method can shorten the length of the resistor, completely insulate the electrical circuits of the resistor from the possible leakage of the water inlet- and outlet-pipe of the heat dissipater, and enable the combinatory device of the resistor and the heat dissipater to be structurally more compact and the connections thereof cleaner.

Abstract: Multi-color CL images of nanoparticle samples may be generated, by irradiating with a scanning electron beam a nanoparticle sample that containing a plurality of spectrally distinct optical emitters configured to generate CL light at respective different color channels, then detecting the CL light from the nanoparticles to generate multi-color NP-CL images of the nanoparticle sample. In some embodiments, SE (secondary electron) images of the sample may be acquire, substantially simultaneously with the acquisition of the CL images, so as to generate correlative NP-CL and SE images of the nanoparticle sample. In some embodiments, the nanoparticles may be surface-functionalized so that the nanoparticles selectively bind only to particular structures of interest.

Abstract: Multi-color CL images of nanoparticle samples may be generated, by irradiating with a scanning electron beam a nanoparticle sample that containing a plurality of spectrally distinct optical emitters configured to generate CL light at respective different color channels, then detecting the CL light from the nanoparticles to generate multi-color NP-CL images of the nanoparticle sample. In some embodiments, SE (secondary electron) images of the sample may be acquire, substantially simultaneously with the acquisition of the CL images, so as to generate correlative NP-CL and SE images of the nanoparticle sample. In some embodiments, the nanoparticles may be surface-functionalized so that the nanoparticles selectively bind only to particular structures of interest.