Abstract: The present application provides methods of producing polyanthracene including polymerization of anthracene monomers in the presence of oxidants and reaction solvents. The present application further provides polyanthracene produced by methods described herein that has higher solubility in organic solvents and better thermal stability and ablation resistance.

Abstract: Provided is a security checking system. The security checking system includes an electron beam acceleration unit for accelerating electron beams having at least one energy intensity, an X-ray guide unit converting the electron beams accelerated by the electron beam acceleration unit into X-rays to guide the converted X-rays into an object, a neutron guide unit, and a detection unit detecting the X-rays and neutrons passing through the object. Thus, nuclear materials within the object may be detected, and also, maintenance/repair costs may be inexpensive to improve economic feasibility.

Abstract: The present application relates to compositions having at least one oligofluoranthene. The compositions may, for example, emit blue or green light when exposed to a blue or ultraviolet radiation. Methods of making the compositions are also disclosed, as well as methods and apparatuses for producing light and detecting nitroaromatics using the compositions.

Abstract: Poly(sulfoaminoanthraquinone) polymer compositions and methods of making these compositions are disclosed herein. The polymer compositions can, for example, be used for removing metal ions from a sample.

Abstract: A hinge mechanism includes a pivot shaft, a resilient member coiling around the pivot shaft, a first cam, a second cam, and a rolling assembly. The pivot shaft defines a through hole in a radial direction thereof. The first cam and the second cam are sleeved on the pivot shaft, the first cam defines two pairs of recesses at one end surface thereof, and the second cam defines a groove at one end surface thereof facing the first cam. The rolling assembly positioned between the first cam and the second cam includes a pin and two rolling bearings sleeved on opposite ends of the pin.

Abstract: The present application provides methods of producing polyanthracene including polymerization of anthracene monomers in the presence of oxidants and reaction solvents. The present application further provides polyanthracene produced by methods described herein that has higher solubility in organic solvents and better thermal stability and ablation resistance.

Abstract: Compositions containing polyanthrylene and methods of making these compositions are disclosed herein. The polyanthrylene composition can, for example, be used for detection of iron in a sample.

Abstract: The present application relates to compositions having at least one oligofluoranthene. The compositions may, for example, emit blue or green light when exposed to a blue or ultraviolet radiation. Methods of making the compositions are also disclosed, as well as methods and apparatuses for producing light and detecting nitroaromatics using the compositions.

Abstract: The present application provides a copolymer including one or more units of pyrene and one or more units of pyrrole. The present application also provides a method of producing a copolymer, including incubating pyrene monomer and pyrrole monomer with an oxidant in the presence of a reaction solvent. Uses of the copolymers are also provided.

Abstract: Aniline copolymers and methods of making these copolymers are disclosed herein. The copolymers can, for example, be used for removing metal ions from a sample.

Abstract: A support mechanism includes a bracket, a sliding member, a connecting unit, and an elastic member. The sliding member is slidably connected to the bracket. The connecting unit includes a first arm, a second arm pivotally connected to the first arm, a first pivot pivotally connecting a first ends of the first arm and the second arm, a second pivot pivotally connecting a second end of the first arm opposite to the first pivot and the bracket, a third pivot pivotally connecting a second end of the second arm opposite to the first pivot and the bracket, and a connecting piece sleeved on the first pivot. The elastic member is positioned between the connecting piece and the bracket. The sliding member resists the first arm and the second arm by an elastic force of the elastic member acting on the first arm and the second arm.

Abstract: A support mechanism includes a bracket, a sliding member, a connecting unit, and an elastic member. The sliding member is slidably connected to the bracket. The connecting unit includes a first arm, a second arm pivotally connected to the first arm, a first pivot pivotally connecting a first ends of the first arm and the second arm, a second pivot pivotally connecting a second end of the first arm opposite to the first pivot and the bracket, a third pivot pivotally connecting a second end of the second arm opposite to the first pivot and the bracket, and a connecting piece sleeved on the first pivot. The elastic member is positioned between the connecting piece and the bracket. The sliding member resists the first arm and the second arm by an elastic force of the elastic member acting on the first arm and the second arm.

Abstract: A support mechanism includes a bracket, two sliding members, a first arm, a second arm, and an elastic member. The sliding members are slidably connected to the bracket. Each sliding member includes a resisting portion. An end of the first arm is pivotally connected to the bracket. An end of the second arm is pivotally connected to the first arm and the bracket. The elastic member is positioned between the first, second arms and the bracket. An elastic force of the elastic member acts on the first arm and the second arm to make the resisting portions of the sliding members resist the first arm and the second arm.

Abstract: A hinge mechanism includes a pivot shaft, a resilient member coiling around the pivot shaft, a first cam, a second cam, and a rolling assembly. The pivot shaft defines a through hole in a radial direction thereof. The first cam and the second cam are sleeved on the pivot shaft, the first cam defines two pairs of recesses at one end surface thereof, and the second cam defines a groove at one end surface thereof facing the first cam. The rolling assembly positioned between the first cam and the second cam includes a pin and two rolling bearings sleeved on opposite ends of the pin.

Abstract: A hinge assembly includes a first rotating module and a second rotating module. The first rotating module includes a frame and a pivot mechanism positioned on the frame. The second rotating module includes a supporting body, a shaft, a rotating washer, a stationary washer, a resilient ring, and a nut. A first end of the shaft is fixed on the frame, and the supporting body, the rotating washer, the stationary washer, the resilient ring, and the nut are orderly sleeved on a second end, opposite to that of the first end, of the shaft. The nut fixes the supporting body, the rotating washer, the stationary washer, and the resilient rings to the shaft. The rotating washer and the stationary washer forms at least one protrusion and at least depression for receiving the at least one protrusion respectively. The pivotal shaft is configured to drive the stationary washer to rotate.

Abstract: A hinge assembly includes a base, a rotating member, and a connecting member connecting the base to the rotating member. The connecting member is slidably positioned on the base. The rotating member is rotatably positioned on the connecting member. The rotating member relative to the connecting member is able to move to be on an outer side of the base with sliding movement of the connecting member relative to the base.

Abstract: A support mechanism includes a bracket, two sliding members, a first arm, a second arm, and an elastic member. The sliding members are slidably connected to the bracket. Each sliding member includes a resisting portion. An end of the first arm is pivotally connected to the bracket. An end of the second arm is pivotally connected to the first arm and the bracket. The elastic member is positioned between the first, second arms and the bracket. An elastic force of the elastic member acts on the first arm and the second arm to make the resisting portions of the sliding members resist the first arm and the second arm.

Abstract: An exemplary hinge assembly includes a frame, a first rotating module, and a second rotating module. The first rotating module includes a first pivotal shaft non-rotatably connected to the frame. The second rotating module includes a second pivotal shaft substantially perpendicular to the first pivotal shaft, a plurality of resilient washers, a supporting member, a rotating member engaging with the supporting member, and a limiting member. A first end of the second pivotal shaft is fixed on the frame. The resilient washers, the rotating member, the supporting member, and the limiting member are orderly sleeved on a second end, opposite to that of the first end, of the second pivotal shaft. A position of the limiting member relative to the second pivotal shaft is adjustable. The second pivotal shaft is capable of driving the rotating member to rotate.

Abstract: A hinge assembly includes a base, a rotating member, and a connecting member connecting the base to the rotating member. The connecting member is slidably positioned on the base. The rotating member is rotatably positioned on the connecting member. The rotating member relative to the connecting member is able to move to be on an outer side of the base with sliding movement of the connecting member relative to the base.

Abstract: An exemplary hinge assembly includes a frame, a first rotating module, and a second rotating module. The first rotating module includes a first pivotal shaft non-rotatably connected to the frame. The second rotating module includes a second pivotal shaft substantially perpendicular to the first pivotal shaft, a plurality of resilient washers, a supporting member, a rotating member engaging with the supporting member, and a limiting member. A first end of the second pivotal shaft is fixed on the frame. The resilient washers, the rotating member, the supporting member, and the limiting member are orderly sleeved on a second end, opposite to that of the first end, of the second pivotal shaft. A position of the limiting member relative to the second pivotal shaft is adjustable. The second pivotal shaft is capable of driving the rotating member to rotate.