Abstract: A pedicle screw implantation guide plate, which comprises a guide body, a plurality of positioning holes, a longitudinal connection channel and an angle mark. The guide body has a first guide plate, a second guide plate and a connection part. The first guide plate is embedded in the second guide plate through the connection part. The plurality of positioning holes is disposed on the first guide plate and the second guide plate for inserting and fixing Kirschner wires. The longitudinal connection channel is disposed inside the first guide plate and the second guide plate for inserting the Kirschner wires to connect the first guide plate and the second guide plate, and to locate spinous process and transverse pedicles. The angle mark is disposed on the guide body, as a visual reference point to adjust a position of the guide body.

Abstract: The present invention discloses sulfonated polyphenylene (phenylene) ether random copolymer, preparation method and application thereof, which has a general chemical formula: wherein, X is 2 to 5 arylene groups or nitrogen-containing heteroarylene groups; Y is 2 to 5 arylene groups or nitrogen-containing heteroarylene groups, C(CF3)Ph, C(Ph)2; Z is direct bond, S, C(CF3)2, C3H6, SO2, CO2, C(CF3)Ph, C(Ph)2, 0 to 5 arylene groups or nitrogen-containing heteroarylene groups; R1 is 0 or more of halogen, NO2, CN, CF3, CH3 or SO3H; R2 is 1 to 8 aryl groups or nitrogen-containing heteroaryl groups optionally substituted with 0 to 8 substituents of halogen, NO2, CN, CF3, CH3 or SO3H; R3 is 0 to 4 substituents of halogen, NO2, CN, CF3, CH3, SO3H, aryl or nitrogen-containing heteroaryl; R4 is 0 or more of halogen, CH3, NO2, CN or CF3, and R5 is 0 or more of halogen, CH3, NO2, CN or CF3, or 0 to 8 aryl or nitrogen-containing heteroaryl substituted with 0 to 8 substituents of halogen, CH3, NO2, CN or CF3.

Abstract: A freehub of a bicycle contains: a body fitted and rotating on a rotary shaft. A receiving sleeve is connected with the body and fitted on the rotary shaft, and the receiving sleeve includes an accommodation holder configured to accommodate a freewheel. A ratchet assembly is mounted between the body and the receiving sleeve, the ratchet assembly includes multiple chutes, and a central axis of a respective chute is not parallel to a central axis of the rotary shaft. A toothed ring is fitted between the fixing element and the body. The ratchet assembly includes multiple teeth, multiple engagement elements, and multiple resilient elements. A respective resilient element abuts against the respective chute and a respective engagement element, such that the respective engagement element is urged by the respective resilient element to linearly move toward the respective tooth so as to engage with the respective tooth.

Abstract: A quick-release includes axle having a head and an outer threaded end formed to two ends thereof. The axle is threadedly connected to the chain stay of a bicycle. The axle includes a passage defined axially therethrough. A groove is formed radially through the head, and two recesses are respectively formed in two insides of the groove. A knob is fitted in the groove of the head. A rod is movably located in the passage and has an engaging end which is connected to the knob. A ball is formed to the rod. A non-circular hole is formed in the ball. When the rod is pulled and the ball is rotatably engaged with the two recesses, the rod is pivoted and partially engaged with the groove so as to rotate the axle to esparto the wheels from the chain stay.

Abstract: A freehub of a bicycle contains: a body fitted and rotating on a rotary shaft. A receiving sleeve is connected with the body and fitted on the rotary shaft, and the receiving sleeve includes an accommodation holder configured to accommodate a freewheel. A ratchet assembly is mounted between the body and the receiving sleeve, the ratchet assembly includes multiple chutes, and a central axis of a respective chute is not parallel to a central axis of the rotary shaft. A toothed ring is fitted between the fixing element and the body. The ratchet assembly includes multiple teeth, multiple engagement elements, and multiple resilient elements. A respective resilient element abuts against the respective chute and a respective engagement element, such that the respective engagement element is urged by the respective resilient element to linearly move toward the respective tooth so as to engage with the respective tooth.

Abstract: The present disclosure discloses a goggle device and a spectacle frame thereof. The spectacle frame includes a buckling structure arranged on an end portion thereof. The buckling structure has an accommodating space and an entrance in spatial communication with the accommodating space. The buckling structure includes a cantilever arranged in the accommodating space and a retaining wall that is arranged in the accommodating space and is spaced apart from the cantilever. A free end portion of the cantilever is arranged adjacent to the entrance, and the cantilever is rotatable between a lock position and an unlock position. When the cantilever is at the lock position, the free end portion shields the entrance. When the cantilever is rotated to the unlock position by an external force, the free end portion does not shield the entrance, and the cantilever is deformed to store an elastic force.

Abstract: A snow goggle device includes a spectacle frame, two pivoting members movably connected to the spectacle frame, and a curved lens pivotally connected to the two pivoting members. Each pivoting member is cooperated with the spectacle frame to form with a first segment movable along a straight path and a second segment movable along an arced path, and includes a third segment synchronously movable with the first segment and the second segment. When the first and the second segments of each pivoting member are synchronously moved, the third segments drive the curved lens to move with respect to the spectacle frame between a closed position and an open position, synchronously causing a deformation of the curved lens. When the curved lens is at the closed position or the open position, the curved lens receives a stress that is smaller than a stress generated from the deformation.

Abstract: A buckling module of a goggle device includes a buckling structure, a flexible belt body and an inserting member fixed on the belt body. The buckling structure has an accommodating space and an entrance in spatial communication with the accommodating space. The buckling structure includes a front positioning portion and a rear positioning portion both arranged at two opposite sides of the entrance. When a front end portion of the inserting member is inserted into the accommodating space by passing through the entrance, the front end portion moves toward an inner surface of the front positioning portion, and a first portion of the belt body adjacent to the front end portion is resiliently squeezed by the front positioning portion, so that the squeezed portion of the belt body drives a rear end portion of the inserting member to move toward an inner surface of the rear positioning portion.

Abstract: A buckling module of a goggle device includes a buckling structure, a flexible belt body and an inserting member fixed on the belt body. The buckling structure has an accommodating space and an entrance in spatial communication with the accommodating space. The buckling structure includes a front positioning portion and a rear positioning portion both arranged at two opposite sides of the entrance. When a front end portion of the inserting member is inserted into the accommodating space by passing through the entrance, the front end portion moves toward an inner surface of the front positioning portion, and a first portion of the belt body adjacent to the front end portion is resiliently squeezed by the front positioning portion, so that the squeezed portion of the belt body drives a rear end portion of the inserting member to move toward an inner surface of the rear positioning portion.

Abstract: The present disclosure discloses a goggle device and a spectacle frame thereof. The spectacle frame includes a buckling structure arranged on an end portion thereof. The buckling structure has an accommodating space and an entrance in spatial communication with the accommodating space. The buckling structure includes a cantilever arranged in the accommodating space and a retaining wall that is arranged in the accommodating space and is spaced apart from the cantilever. A free end portion of the cantilever is arranged adjacent to the entrance, and the cantilever is rotatable between a lock position and an unlock position. When the cantilever is at the lock position, the free end portion shields the entrance. When the cantilever is rotated to the unlock position by an external force, the free end portion does not shield the entrance, and the cantilever is deformed to store an elastic force.

Abstract: A snow goggle device includes a spectacle frame, two pivoting members movably connected to the spectacle frame, and a curved lens pivotally connected to the two pivoting members. Each pivoting member is cooperated with the spectacle frame to form with a first segment movable along a straight path and a second segment movable along an arced path, and includes a third segment synchronously movable with the first segment and the second segment. When the first and the second segments of each pivoting member are synchronously moved, the third segments drive the curved lens to move with respect to the spectacle frame between a closed position and an open position, synchronously causing a deformation of the curved lens. When the curved lens is at the closed position or the open position, the curved lens receives a stress that is smaller than a stress generated from the deformation.

Abstract: A hinge structure includes a first base, a second base, a first linking rod, a second linking rod, and a torque assembly. The first linking rod has a first pivot part, a first sliding part, and a second pivot part. The first pivot part is pivoted to the first base, and the first sliding part is slidably connected to the second base. The second linking rod has a second sliding part, a shaft part, a third pivot part, and a fourth pivot part. The second sliding part is slidably connected to the first base. The third pivot part is pivoted to the second base. The second pivot part is pivoted to the fourth pivot part. The torque assembly has a sleeve part sleeved on the shaft part and a connection part connected to the second base. The sleeve part generates torque during rotation with respect to the shaft part.

Abstract: A hinge structure includes a first base, a second base, a first linking rod, a second linking rod, and a torque assembly. The first linking rod has a first pivot part, a first sliding part, and a second pivot part. The first pivot part is pivoted to the first base, and the first sliding part is slidably connected to the second base. The second linking rod has a second sliding part, a shaft part, a third pivot part, and a fourth pivot part. The second sliding part is slidably connected to the first base. The third pivot part is pivoted to the second base. The second pivot part is pivoted to the fourth pivot part. The torque assembly has a sleeve part sleeved on the shaft part and a connection part connected to the second base. The sleeve part generates torque during rotation with respect to the shaft part.

Abstract: Disclosed is a method for identifying a greater risk for developing bronchopulmonary dysplasia (BPD) of a preterm infant. The method comprises obtaining a genomic DNA sample from the preterm infant's mother, genotyping rs1800566 SNP in the NQO1 gene, and determining the preterm infant as being at risk of developing BPD if the genotype of the rs1800566 SNP is TT. Also disclosed are a primer pair for genotyping rs1800566 SNP in the NQO1 gene, and a method thereof.

Abstract: Disclosed is a method for identifying a greater risk for developing bronchopulmonary dysplasia (BPD) of a preterm infant. The method comprises obtaining a genomic DNA sample from the preterm infant's mother, genotyping rs2280789 SNP in the RANTES gene, and determining the preterm infant as being at risk of developing BPD if the genotype of the rs2280789 SNP is CC. Also disclosed are a primer pair for genotyping rs2280789 SNP in the RANTES gene, and a method thereof.

Abstract: Disclosed is a method of identifying a greater risk for developing bronchopulmonary dysplasia (BPD) in a preterm infant. The method comprises obtaining a genomic DNA sample from the preterm infant's mother, identifying the nucleotide of rs2280789 SNP in the RANTES gene and the nucleotide of rs1800566 SNP in the NQO1 gene, and determining the preterm infant as being at risk of developing BPD when the genotype of rs2280789 SNP carries C nucleotide and the genotype of rs1800566 SNP carries T nucleotide.

Abstract: Provided is a method for determining the risk of preterm labor in a pregnant female subject. The method comprises detecting the expression level of one or more markers selected from the group consisting of TMEM200A, TMEM108 and GXYLT2, in a sample derived from the pregnant female subject.

Abstract: Provided is a method for determining the risk of bronchopulmonary dysplasia (BPD) of a preterm infant. The method comprises detecting the expression level of EPHB2 in a primary culture of mesenchymal stem or stromal cells (MSCs) derived from a placenta-related tissue of the infant's mother or umbilical cord blood of the infant.

Abstract: A method of distinguishing mesenchymal stem cells (MSCs) from fibroblasts is provided. Also provided is a method of increasing a purity of mesenchymal stem cells (MSCs) population in a cell culture. The above-mentioned methods each comprise a step of sorting or isolating the cells by a marker of CD146 from a cell culture derived from a placenta-related tissue. Further provided is a method of assessing purity of mesenchymal stem cells (MSCs) in a cell culture derived from a placenta-related tissue, comprising determining the percentage of cells expressing CD146 in the culture.

Abstract: A method of distinguishing mesenchymal stem cells (MSCs) in a primary culture of cells derived from a placenta-related tissue is provided. Also provided is a method of increasing the purity of MSC population in a primary culture of cells derived from a placenta-related tissue. Further provided is a method of isolating a MSC population which is more responsive in an inflammatory environment. Said methods each comprise a step of sorting the cells by a marker of EphA2.