Abstract: A battery pack mounting structure for vehicles, includes a frame side member extending in a front and rear direction on each side of a vehicle to form a chassis frame, a battery disposed to be overlapped horizontally on inside of both frame side members, and a battery case enclosing the battery therein, wherein a case side portion provided on a side of the battery case is coupled to a lower side of the frame side member.

Abstract: The present disclosure relates to a porous nanoparticle-based radiative cooling material and a radiative cooling device using the same. The porous nanoparticle-based radiative cooling material according to one embodiment of the present disclosure includes a plurality of porous nanoparticles and binder molecules, wherein the porous nanoparticles reflect incident sunlight and absorb and radiate mid-infrared light, pores are included inside dielectric particles, reflectance for the incident sunlight and mid-infrared emissivity are increased based on the pores, and a laminated structure distribution is formed by the binder molecules.

Abstract: The present disclosure includes a frame side member forming a chassis frame and disposed on both sides of a vehicle in a forward-backward direction, a battery disposed to overlap inwardly from the frame side member in a horizontal direction, and a battery case surrounding the battery and coupled to the frame side member, wherein a cross section of the frame side member forms a plurality of closed spaces.

Abstract: There is provide a method for manufacturing analytical semiconductor samples by using an apparatus for manufacturing analytical semiconductor samples, which minimizes a feedback time by manufacturing a viewing surface that is environment-friendly and has a large area. The method comprising mounting the analytical semiconductor samples to a holder; discharging deionized (DI) water to an upper surface of a polishing plate through a DI water nozzle; grinding the analytical semiconductor samples with the upper surface of the polishing plat; determining whether a desired viewing surface of the analytical semiconductor samples has been acquired after the grinding of the analytical semiconductor samples; and transferring the analytical semiconductor samples to analyze the viewing surface of the ground analytical semiconductor samples based on a determination that the desired viewing surface of the analytical semiconductor samples has been acquired.

Abstract: Disclosed is a method of removing calcium from a hydrocarbon fraction using an extraction agent including 2-oxopropanal or derivatives thereof, the method including (S1) adding a hydrocarbon fraction with an extraction agent including 2-oxopropanal or derivatives thereof to give a mixture, (S2) converting an oil-soluble calcium compound into a water-soluble calcium compound by reacting the hydrocarbon fraction with the 2-oxopropanal or derivatives thereof, and (S3) removing the water-soluble calcium compound.

Abstract: Disclosed is a method of removing calcium from a hydrocarbon fraction using an extraction agent including 2-oxopropanal or derivatives thereof, the method including (S1) adding a hydrocarbon fraction with an extraction agent including 2-oxopropanal or derivatives thereof to give a mixture, (S2) converting an oil-soluble calcium compound into a water-soluble calcium compound by reacting the hydrocarbon fraction with the 2-oxopropanal or derivatives thereof, and (S3) removing the water-soluble calcium compound.