Abstract: A method for oxidative cleavage of a compound with an unsaturated double bond is provided.

Abstract: Provided is a virtual reality fluid body sensing device which includes: a body sensing eye mask made according to the contour of a face and having an opening for a wearer's eyes to see through, and the body sensing eye mask is in conjunction with a virtual reality goggle. There is also a fluid channel in the body sensing eye mask. A fluid control system, connected to the body sensing eye mask, can supply a fluid to the fluid channel of the body sensing eye mask and adjust the fluid temperature, flow rate and flow speed of the fluid injected into the body sensing eye mask. By combining the body sensing eye mask with the virtual reality goggle and supplying cold and hot fluids to the body sensing eye mask through the fluid control system, a virtual reality environment can be achieved for the wearer.

Abstract: A block copolymer is disclosed. The block copolymer has a structure of formula (V) below: [D]x-[E]y-[F]z??(V) wherein D, E, and F are each independently a compound of formula (VI) below, and D, E, and F are different from each other; and x, y, and z are each independently an integer from 1 to 40; wherein A2 is O or S; R7 is H or a C1-6 alkyl; and R8 is a C1-12 alkyl, (CH2)qN(R11)2, CH2(CH2OCH2)rCH2N(R12)2, or CH2(CH2OCH2)sCH2OR13, wherein R11, R12, and R13 are each independently a C1-6 alkyl; and q, r, and s are each independently an integer from 1 to 10.

Abstract: A block copolymer and a method for preparing the same are disclosed. The method comprises the following steps: (A) mixing a compound of formula (I), a catalyst of formula (II), and a first solvent to obtain a first mixture; (B) adding a first monomer into the first mixture for reaction to obtain a second mixture; and (C) adding a second monomer into the second mixture for reaction to obtain a third mixture; wherein the compound of formula (I) and the catalyst of formula (II) are as defined in the specification.

Abstract: Provided is a virtual reality fluid body sensing device which includes: a body sensing eye mask made according to the contour of a face and having an opening for a wearer's eyes to see through, and the body sensing eye mask is in conjunction with a virtual reality goggle. There is also a fluid channel in the body sensing eye mask. A fluid control system, connected to the body sensing eye mask, can supply a fluid to the fluid channel of the body sensing eye mask and adjust the fluid temperature, flow rate and flow speed of the fluid injected into the body sensing eye mask. By combining the body sensing eye mask with the virtual reality goggle and supplying cold and hot fluids to the body sensing eye mask through the fluid control system, a virtual reality environment can be achieved for the wearer.

Abstract: A vehicle chassis including a vehicle frame defining an inner space and being operable to switch between a first expanded state and a collapsed state, and a loading device mounted to the inner space and removably connected to the vehicle frame. The loading device defines a first loading surface when the vehicle frame is in the first expanded state, and the loading device defines a second loading surface that is smaller than the first loading surface when the vehicle frame is in the collapsed state.

Abstract: A method for oxidative cleavage of a compound with an unsaturated double bond is provided.

Abstract: An esterification method of a copolymer is disclosed. The esterification method includes the steps of: (A) mixing a copolymer having a carboxylic acid group, an alcohol or an aminoalcohol compound, a catalyst of formula (I), and a first solvent to obtain a first mixture; (B) reacting the first mixture at a predetermined temperature to obtain a second mixture; and (C) adding the second mixture into a second solvent; wherein the catalyst of formula (I) is shown below: [M(O)a]m+Xbn???(I) wherein M, X, a, b, in, and n are defined in the specification.

Abstract: A vehicle chassis including a vehicle frame defining an inner space and being operable to switch between a first expanded state and a collapsed state, and a loading device mounted to the inner space and removably connected to the vehicle frame. The loading device defines a first loading surface when the vehicle frame is in the first expanded state, and the loading device defines a second loading surface that is smaller than the first loading surface when the vehicle frame is in the collapsed state.

Abstract: An esterification method of a copolymer is disclosed. The esterification method includes the steps of: (A) mixing a copolymer having a carboxylic acid group, an alcohol or an aminoalcohol compound, a catalyst of formula (I), and a first solvent to obtain a first mixture; (B) reacting the first mixture at a predetermined temperature to obtain a second mixture; and (C) adding the second mixture into a second solvent; wherein the catalyst of formula (I) is shown below: [M(O)a]m+Xbn+??(I) wherein M, X, a, b, in, and n are defined in the specification.

Abstract: A block copolymer and a method for preparing the same are disclosed. The method comprises the following steps: (A) mixing a compound of formula (I), a catalyst of formula (II), and a first solvent to obtain a first mixture; (B) adding a first monomer into the first mixture for reaction to obtain a second mixture; and (C) adding a second monomer into the second mixture for reaction to obtain a third mixture; wherein the compound of formula (I) and the catalyst of formula (II) are as defined in the specification.