Abstract: A process for preparing a prostaglandin analogue comprising a step of converting a compound of formula (8?): to the prostaglandin analogue, wherein R3 represents hydrogen or a hydroxyl protecting group.

Abstract: A communication method for a Bluetooth device in a scatternet which may include several piconets is proposed. The method includes transmitting data to a peer device in the first piconet, determining whether there is any buffered data to be transmitted to the peer device in the first piconet, and switching from the first piconet to the next piconet to transmit data to a peer device in the second piconet according to the determination result.

Abstract: The present invention provides a circumferential frame for attachment to an edge of a photovoltaic module, which utilizes an adhesive method to achieve the attachment between the circumferential frame and the edge of the photovoltaic module without the aids of fastening means and such that the overall weight and size of the frame as well as the supporting stand can be reduced while the load bearing of houses can be reduced and photovoltaic modules of greater sizes or surface areas can be installed for practical purposes.

Abstract: The present disclosure relates to a sulfurized polyacrylonitrile and a lithium-ion battery cathode active material. The sulfurized polyacrylonitrile includes a structural unit. A general molecular formula of the structural unit is C3HNSn, in which n is a positive integer. The lithium-ion battery cathode active material includes sulfurized polyacrylonitrile and a sulfurized polyacrylonitrile with inserted ions.

Abstract: A method for making sulfur-graphene composite material is disclosed. In the method, a dispersed solution including a solvent and a plurality of graphene sheets dispersed in the solvent is provided. A sulfur-source chemical compound is dissolved into the dispersed solution to form a mixture. A reactant, according to the sulfur-source chemical compound, is introduced to the mixture. Elemental sulfur is produced on a surface of the plurality of graphene sheets due to a redox reaction between the sulfur-source chemical compound and the reactant, to achieve the sulfur-graphene composite material. The sulfur-graphene composite material is separated from the solvent.

Abstract: A method for cycling a sulfur composite lithium ion battery includes a step of charging and discharging the sulfur composite lithium ion battery at a first voltage range between a predetermined highest voltage and a predetermined lowest voltage. The lithium ion battery includes an electrode active material. The electrode active material includes a sulfur composite. The step of charging and discharging satisfies at least one conditions of (1) and (2): (1) the predetermined lowest voltage of the first voltage range is larger than a discharge cutoff voltage of the sulfur composite; and (2) the predetermined highest voltage of the first voltage range is smaller than a charge cutoff voltage of the sulfur composite. A method for using a sulfur composite as an electrode active material of a lithium ion battery is also disclosed.

Abstract: A lithium ion battery includes a cathode electrode, an anode electrode, and an electrolyte. The anode electrode is spaced from the cathode electrode. The anode electrode includes an anode active material. The anode active material includes sulfur grafted poly(pyridinopyridine). The sulfur grafted poly(pyridinopyridine) includes a poly(pyridinopyridine) matrix and sulfur dispersed in the poly(pyridinopyridine) matrix. The electrolyte is located between the cathode electrode and the anode electrode.

Abstract: A method for reconstructing a stereoscopic image stream from a plurality of compressed frames is provided. Each compressed frame consists of a merged image formed by juxtaposing a sampled image frame of a left image and a sampled image frame of a right image. Each sampled image frame has half a number of original pixels disposed at intersections of a plurality of horizontal lines and a plurality of vertical lines in a staggered quincunx pattern in which original pixels surround missing pixels. Each missing pixel is reconstructed according to at least 5 horizontal pixel pairs and 3 vertical pixel pairs in a compressed frame.

Abstract: A method for making an anode active material is described. The anode active material includes a phosphorus composite material. In the method, a solid-state red phosphorus and a porous conductive carbon material are provided. The solid-state red phosphorus and the porous conductive carbon material are spaced disposed in a vessel and the vessel is sealed. The solid-state red phosphorus is sublimed by heating the vessel to make the sublimed red phosphorus diffused in the porous conductive carbon material. The sublimed red phosphorus is condensed. The condensed red phosphorus adsorbs in the porous conductive carbon material to form the phosphorus composite material.

Abstract: A process for preparing a prostaglandin analogue comprising a step of converting a compound of formula (8?): to the prostaglandin analogue, wherein R3 represents hydrogen or a hydroxyl protecting group.

Abstract: In the method for making graphene, an electrolyte solution is formed by dissolving an electrolyte lithium salt in an organic solvent. Lithium ions are separated out from the electrolyte lithium salt in the electrolyte solution. Metal lithium and graphite are disposed in the electrolyte solution, and the metal lithium and the graphite are in contact with each other. In the electrolyte solution, lithium ions and organic solvent molecules jointly insert between adjacent layers of the graphite to form a graphite intercalation compound. The graphene is peeled off from the graphite intercalation compound.

Abstract: A method for making a sulfur-graphene composite material is provided. In the method, an elemental sulfur solution and a graphene dispersion are provided. The elemental sulfur solution includes a first solvent and an elemental sulfur dissolved in the first solvent. The graphene dispersion includes a second solvent and graphene sheets dispersed in the second solvent. The elemental sulfur solution is added to the graphene dispersion, a number of elemental sulfur particles are precipitated and attracted to a surface of the graphene sheets to form the sulfur-graphene composite material. The sulfur-graphene composite material is separated from the mixture.

Abstract: A method for making sulfur-graphene composite material is disclosed. In the method, a dispersed solution including a solvent and a plurality of graphene sheets dispersed in the solvent is provided. A sulfur-source chemical compound is dissolved into the dispersed solution to form a mixture. A reactant, according to the sulfur-source chemical compound, is introduced to the mixture. Elemental sulfur is produced on a surface of the plurality of graphene sheets due to a redox reaction between the sulfur-source chemical compound and the reactant, to achieve the sulfur-graphene composite material. The sulfur-graphene composite material is separated from the solvent.

Abstract: A lithium iron phosphate hierarchical structure includes a plurality of lithium iron phosphate nano sheets and has an overall spherical-shaped structure. The overall spherical-shaped structure is constructed by a plurality of lithium iron phosphate nano sheets layered together. A method for making a lithium iron phosphate hierarchical structure includes several steps. In the method, a lithium ion contained liquid solution, a ferrous ion contained liquid solution, and a phosphate ion contained liquid solution are respectively provided. A concentration of lithium ions in the lithium ion contained liquid solution is equal to or larger than 1.8 mol/L. The lithium ion contained liquid solution, the ferrous ion contained liquid solution, and the phosphate ion contained liquid solution are mixed to form a liquid mixture. The liquid mixture is heated in a sealed reactor to form the lithium iron phosphate hierarchical structure.

Abstract: The present disclosure relates to a method for making a conjugated polymer. In the method, polyacrylonitrile, a solvent, and a catalyst are provided. The polyacrylonitrile is dissolved in the solvent to form a polyacrylonitrile solution. The catalyst is uniformly dispersed into the polyacrylonitrile solution. The polyacrylonitrile solution with the catalyst is heated to induce a cyclizing reaction of the polyacrylonitrile, thereby forming a conjugated polymer solution with the conjugated polymer dissolved therein.

Abstract: The present application provides intermediates for preparing prostaglandin analogues and processes for preparing prostaglandin analogues and intermediates thereof. The intermediates include: A compound of formula (6): R1 represents H, C1-C5-alkyl, or benzyl, in particular isopropyl.

Abstract: A method for measuring a precision of a star sensor and a system using the same may be provided. The method may comprise steps of: 1) fixing the star sensor on the Earth; 2) inputting a current time (T) of a measuring start time relative to a J2000.0 time; 3) determining a directional vector of the navigation star in a J2000.0 Cartesian coordinate system at the current time (T) according to a right ascension and a declination of the navigation star in the J2000.0 Cartesian coordinate system and visual movement parameters (??, ??) of the navigation star in the direction of the right ascension and the declination which are stored in the star sensor; 4) converting the directional vector of the navigation star in the J2000.

Abstract: An optical sensing device includes a shell, at least one light emitting member, a rotator type shading member and at least one optical sensing member. The shell is formed with a black-body condition space having a light emitting chamber, a shading chamber and at least one optical sensing chamber. The light emitting member projects a light beam. The rotator type shading member is rotatably restrained within the shading chamber, and has a geometric center and a weight center offset from the geometric center. When the optical sensing device is lifted in a lifting azimuth or lowered in a lowering azimuth, the rotator type shading member is rotated by the geometric center to make the weight center located in the lowering azimuth with respect to the geometric center. The optical sensing member is arranged in the optical sensing chamber, and senses the light beam to accordingly send out a sensing signal.

Abstract: A communications apparatus is provided. A first wireless communications module provides a first wireless communications service and communicates with a first communications device in compliance with a first protocol. A second wireless communications module provides a second wireless communications service and communicates with a second communications device in compliance with a second protocol. A clock source is shared by the first and the second communications modules and provides a reference clock to the first and the second communications modules. The first wireless communications module detects a request from the second wireless communications module for activating the clock source, determines whether the reference clock has been stably generated by the clock source, and adjusts an electrical characteristic of the clock source to facilitate the reference clock output from the clock source to achieve a target frequency when the reference clock has not been stably generated.

Abstract: A communications apparatus is provided. A radio module transmits first packets before establishing a connection with a peer communications device. A transmission power utilized for transmitting the first packets is adjustable, so that multiple levels of transmission power are utilized for transmitting the first packets.