Abstract: The present disclosure provides organic-inorganic hybrid polymer particles, which have desirable surface chemistry and optical properties that make them particularly suitable for biological and optical applications. The present disclosure also provides methods of making organic-inorganic hybrid polymer particles. The present disclosure also provides methods of using the organic-inorganic hybrid polymer particles for biological and optical applications.

Abstract: The present disclosure relates to a heart rate monitoring method based on heartbeat harmonics. First, mixed data of a subject, which includes a fundamental respiration signal, respiration harmonics, a fundamental heartbeat signal, and heartbeat harmonics, is acquired by scanning a set of range bins. Range Doppler processing of the mixed data is performed to determine a range bin of interest. Data spectrum is then extracted based on a portion of the mixed data acquired at the range bin of interest. Next, the data spectrum is adaptively filtered to at least remove a spectrum peak of the fundamental respiration signal and a spectrum peak of the fundamental heartbeat signal mixed with a portion of respiration harmonics that are spectrally close to the fundamental heartbeat signal. Finally, the fundamental heartbeat signal is recovered based on a strongest heartbeat harmonic in the filtered data spectrum.

Abstract: A phase adjusting device provided includes a main delay circuit, a first converter, a second converter, a first buck circuit, and a second buck circuit. The main delay circuit receives an input clock signal to generate a main delay signal. The first converter receives the input clock signal to generate a first conversion signal. The second converter is coupled to the main delay circuit to receive the main delay signal and generate a second conversion signal. The first buck circuit is coupled to the first converter to receive the first conversion signal and generate a first buck voltage. The second buck circuit is coupled to the second converter to receive the second conversion signal and generate a second buck voltage. A first phase difference is formed between the main delay signal and the input clock signal.

Abstract: Polymers, monomers, chromophoric polymer dots and related methods are provided. Highly fluorescent chromophoric polymer dots with narrow-band emissions are provided. Methods for synthesizing the chromophoric polymers, preparation methods for forming the chromophoric polymer dots, and biological applications using the unique properties of narrow-band emissions are also provided.

Abstract: Polymers, monomers, chromophoric polymer dots and related methods are provided. Highly fluorescent chromophoric polymer dots with narrow-band emissions are provided. Methods for synthesizing the chromophoric polymers, preparation methods for forming the chromophoric polymer dots, and biological applications using the unique properties of narrow-band emissions are also provided.

Abstract: An ocular structure for observation apparatus includes a first member, a second member and a main body. The first member includes at least one slot and a plurality of first limiting mechanisms. The second member includes at least one slider extending into the slot and a plurality of second limiting mechanisms. The main body includes an ocular lens unit, wherein the first member and the second member are mounted on the main body. The slider is moved in the slot when the first member and the second member are in relative rotation, and the first limiting mechanisms directly or indirectly match the second limiting mechanisms to position the first member with respect to the second member.

Abstract: The present invention provides a mobile device and an optical imaging lens thereof. The optical imaging lens comprises six lens elements positioned in an order from an object side to an image side and an aperture stop positioned between the second and the third lens elements. Through controlling the convex or concave shape of the surfaces of the lens elements and designing parameters satisfying at least one inequality, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.

Abstract: This disclosure provides semiconducting polymer dots (Pdots) for use in a wide variety of applications. In particular, this disclosure provides Pdots that are halogenated, including fluorinated Pdots. This disclosure also provides methods for synthesizing Pdots and methods for using Pdots, such as for biological imaging.

Abstract: Halogen-free flame-retardant polymer composition, preparation method and use thereof are provided. The composition comprises a propylene polymer, a thermoplastic elastomer, and an intumescent flame retardant system comprising a piperazine component. The obtained halogen-free flame-retardant polymer composition is used to make wire or cable sheath.

Abstract: Polymers, monomers, chromophoric polymer dots and related methods are provided. Highly fluorescent chromophoric polymer dots with narrow-band emissions are provided. Methods for synthesizing the chromophoric polymers, preparation methods for forming the chromophoric polymer dots, and biological applications using the unique properties of narrow-band emissions are also provided.

Abstract: Halogen-free flame-retardant polymer composition, preparation method and use thereof are provided. The composition comprises a propylene polymer, a thermoplastic elastomer, and an intumescent flame retardant system comprising a piperazine component. The obtained halogen-free flame-retardant polymer composition is used to make wire or cable sheath.

Abstract: Microalgae are potential energy resources for production of biofuels, such as biodiesel, ethanol, and butanol. A method for enhancing cell growth of microalgae enhances transgenic expression of a bicarbonate transporter (HCO3? transporter) in microalgae and thereby obtains a genetically modified microalgae capable of enhanced inorganic carbon fixation, efficient photosynthesis, and expeditious cell growth. The genetically modified microalgae are fit for use in biofuel production.

Abstract: A keyboard includes a keyboard body, and a camera module. The camera module includes a support, a receiving portion and a camera unit. The support includes a first connecting end and a first receiving end. The receiving portion includes a rotating end and an opposite second receiving end. The support is rotatably coupled to the keyboard body by the first connecting end. The rotating end is rotatably received in the first receiving end and the camera unit is received in the second receiving end.

Abstract: A fastening device includes a base and a fastening member. The base defines a receiving space for receiving an electronic component. The fastening member includes a fastening portion and an elastic abutting portion. The fastening portion is fixed to the base. The elastic abutting portion extends from the fastening portion upwards and through the base and is configured for securing the electronic component in the receiving space.

Abstract: A lock includes a housing, a cover, a lock cylinder holder, a lock cylinder, a cam, a resisting shaft, at least one latching block, and at least one first elastic member. The cover is secured to one end of the housing. A gap is formed between the cover and the housing. The lock cylinder holder is secured to the housing. The lock cylinder is rotatably mounted in the lock cylinder holder. The cam is received in the housing and secured to the lock cylinder. The resisting shaft is rotatably mounted in the housing and includes a frustum shaped end. The latching block is received in the gap. The latching block includes an inclined surface corresponding to the frustum shaped end. The first elastic member is configured to connect the latching block to the cover or the housing. An electronic device using the lock is also provided.

Abstract: The invention discloses a high-voltage direct-current uninterruptible power supply system configured to be connected to a plurality of power sources. The uninterruptible power supply system according to the invention includes a plurality of power modules, each of which is connected to a power source for receiving an input power from the power source connected thereto and converting the input power into a direct-current output power, a control module connected to the power modules through communication lines for managing the power modules, and a power distribution unit connected to a DC voltage bus for relaying the direct-current output power to a plurality of electronic devices.

Abstract: An electronic device includes a circuit board, an extension card, a cooling device, and a connecting member. The extension card is coupled to the circuit board. The cooling device includes an outer casing and an inner casing received in the outer casing. The connecting member includes a fixing end and an engaging end opposite to the fixing end. The fixing end is fixedly mounted on the outer casing. The engaging end is configured for fastening the extension card on the circuit board. The outer casing moves between a first position where the engaging end fastens the extension card and a second position where the engaging end is separated from the extension card to unfasten the extension card.

Abstract: A lock includes a housing, a cover, a lock cylinder holder, a lock cylinder, a cam, a resisting shaft, at least one latching block, and at least one first elastic member. The cover is secured to one end of the housing. A gap is formed between the cover and the housing. The lock cylinder holder is secured to the housing. The lock cylinder is rotatably mounted in the lock cylinder holder. The cam is received in the housing and secured to the lock cylinder. The resisting shaft is rotatably mounted in the housing and includes a frustum shaped end. The latching block is received in the gap. The latching block includes an inclined surface corresponding to the frustum shaped end. The first elastic member is configured to connect the latching block to the cover or the housing. An electronic device using the lock is also provided.

Abstract: An electronic device includes a circuit board, an extension card, a cooling device, and a connecting member. The extension card is coupled to the circuit board. The cooling device includes an outer casing and an inner casing received in the outer casing. The connecting member includes a fixing end and an engaging end opposite to the fixing end. The fixing end is fixedly mounted on the outer casing. The engaging end is configured for fastening the extension card on the circuit board. The outer casing moves between a first position where the engaging end fastens the extension card and a second position where the engaging end is separated from the extension card to unfasten the extension card.

Abstract: A fastening device includes a base and a fastening member. The base defines a receiving space for receiving an electronic component. The fastening member includes a fastening portion and an elastic abutting portion. The fastening portion is fixed to the base. The elastic abutting portion extends from the fastening portion upwards and through the base and is configured for securing the electronic component in the receiving space.