Abstract: A precision agriculture implementation method by UAV systems and artificial intelligence image processing technologies provides an unmanned aerial vehicle (UAV), a wireless communication device, a central control unit, and a spray device and a multispectral camera installed to the UAV. The farming area is divided into an array of blocks. The central control unit controls the UAV to fly over the blocks according to navigation parameters and the multispectral camera to capture a multispectral image of each block. A projected leaf area index (PLAI) and a normalized difference vegetation index (NDVI) of each block are calculated by the multispectral image, and a spray control mode of the spray device of the corresponding block is set according to the PLAI and NDVI. The spray device is controlled to spray a water solution, salt solution, fertilizer solution, and/or pesticide solution to the corresponding block according to the spray control mode.

Abstract: A pivot structure includes a first pivot element, a second pivot element, and a fixing element. The first pivot element includes a through hole. The second pivot structure includes a pivoting portion. The pivoting portion is rotatably engaged with the through hole. The fixing element is coupled with the second pivot element. The fixing element includes a first retaining portion, and the first pivot element is retained between the second pivot element and the first retaining portion.

Abstract: A battery cell module of the present invention includes: a plurality of battery assemblies, each having several battery cells; a flame-retardant unit, covered on an external surface of each of the battery cells; a first bracket, having a first fixation plate in grid pattern, the first fixation plate having a plurality of first containing slots corresponding to the plurality of the battery assemblies; a second bracket, connected with the first bracket and having a second fixation plate in grid pattern, the second fixation plate having a plurality of second containing slots corresponding to the plurality of the first containing slots; wherein an end of each of the battery cells is mounted in each of the plurality of the first containing slots, the other end of each of the battery cells is mounted in each of the plurality of the second containing slots.

Abstract: A device casing includes a casing body and a detachable bracket. The casing body has first and second supporting frames opposite to each other, and first and second guiding slots formed on the first supporting frame. The first guiding slot has a first open end and a first closed end. The second guiding slot has a second open end and a second closed end. The detachable bracket is detachably disposed between the first and second supporting frames and has first and second sliding posts. The first sliding post is rotatably disposed at the first closed end. The second sliding post is slidably disposed at the second closed end. By the structural constraint between the first and second guiding slots and the first and second sliding posts respectively, the detachable bracket can stably rotate relative to the casing body and can be installed onto the casing body easily.

Abstract: A gas detecting module includes a carrying plate, a sensor, a compartment body and an actuator. The carrying plate has a substrate and a gas opening. The compartment body is divided into a first compartment and a second compartment by a partition plate. The first compartment has an opening. The second compartment has an outlet and accommodates the actuator. The bottom of the compartment body has an accommodation recess receiving the carrying plate, whereby the gas opening is aligned with the outlet, and the sensor packaged on the substrate is disposed within the first compartment through the opening. The partition plate has a notch. The gas detecting module is assembled in a slim-type portable device having a casing. The casing has an inlet aligned with the first compartment. As the actuator is actuated, ambient gas is inhaled into the first compartment, and the sensor detects the gas flowing therethrough.

Abstract: A coaxial cable connector includes a hexagonal body on an outer portion of nut of a coupling head; an opening spring washer combined with a sleeve of the coupling head; an inner tube shaft threaded through the coupling head and assembled with a joint seat; the inner tube shaft set with a center through-hole and including a tapered bevel disposed in a front portion and a clamping layer which is disposed in an inner hole of a tail portion, and a colored flat tire ring. The joint seat is threaded through the inner tube shaft to an end surface layer of the tail portion, and an isolation net of the coaxial cable is turn back onto an outer cover to the tapered bevel. A contraction ring is combined with a chamfer and a bevel of the sleeve to form a gapless tightness.

Abstract: A uni-block optical pulse compressor which acts to manipulate an input beam with a train of pulses in such a way that the pulses returned after a round-trip though the uni-block compressor are temporally compressed as described. The device is comprised of two optically transparent dielectric blocks whose indices of refraction are larger than the ambient, and provides a compact, portable and robust means for temporally compressing long duration pulses.

Abstract: An LED tube lamp comprises a lamp tube, which includes a light transmissive portion; a fixing structure and an LED light assembly, which includes an LED light source and an LED light strip. The light transmissive portion is fixedly connected to a surface of the fixing structure and the LED light strip is fixedly connected to another surface of the fixing structure. The LED light assembly finds upright support by the fixing structure. The LED light source is thermally and electrically connected to the LED light strip. Two end caps are attached to two end of the lamp tube respectively. R3 is a ratio of an overall area of a metallic object on a cross section of the lamp tube to an overall area of a nonmetallic object on the cross section. R15 is a constant regardless of where the cross section finds itself on a longitudinal axis of the lamp tube. R3 is from 0.005 to 0.1.

Abstract: The present invention discloses a DAC device including a positive DAC, a negative DAC and an output circuit. The positive DAC is configured to perform a digital-to-analog converting operation on a digital input signal based on a first pulse signal to generate a first analog signal, wherein the first analog signal comprises a convolution result of the first pulse signal and the digital input signal. The negative DAC is configured to perform the digital-to-analog converting operation on the digital input signal based on a second pulse signal to generate a second analog signal, wherein the second analog signal comprises a convolution result of the second pulse signal and the digital input signal. The output circuit is configured to generate an output analog signal according to the first analog signal and the second analog signal.

Abstract: A bamboo amplifier and holder is described. In some examples, the bamboo amplifier and holder can include a bamboo tube, a device slot, one or more charging slots, a rechargeable battery and a mechanism to support the bamboo tube. The device slot is configured to receive a device and the bamboo tube is configured to amplify the sound emitted and/or generated by the device. The charging slots are each configured to accommodate a charging port. The device can be charged when connected to the rechargeable battery. Also, the rechargeable battery can be charged when connected to an external power source. These connections can be via one or more charging ports.

Abstract: A fuel cell and a method for producing the same are provided. The fuel cell includes a membrane electrode assembly and a gas diffusion layer that is disposed at each of opposite surfaces of the membrane electrode assembly, and includes a plurality of compressed parts that are formed by pressure at positions spaced out at predetermined intervals on the gas diffusion layer. The fuel cell further includes a separator that is in contact with an outer surface of the gas diffusion layer, and has a plurality of land parts that protrude toward the gas diffusion layer, and a plurality of channel parts that form flow paths between the land parts. The land parts respectively protrude toward the compressed parts of the gas diffusion layer to come in contact with the compressed parts.

Abstract: A separator for a fuel cell includes: a metal base material; and a carbon coating layer formed on one surface or both surfaces of the metal base material, in which roughness Ra formed at an interface between the metal base material and the carbon coating layer may be in a range of 20 to 78 nm.

Abstract: Provided are a real-time acceleration sensor calibration apparatus for measuring a movement of a vehicle and an acceleration sensor calibration method, the acceleration sensor calibration apparatus including an acceleration sensor configured to measure a triaxial acceleration value, a gyroscope configured to measure a triaxial angular velocity value, an acceleration data calibrator configured to primarily transform a vector of the measured acceleration value using a gravity vector calculated based on the triaxial acceleration value and the triaxial angular velocity value measured by the acceleration sensor and the gyroscope, and a communicator configured to transmit information related to the movement of the vehicle to a server based on calibrated acceleration data.

Abstract: The invention relates to an astaxanthin compound composition, the preparation system and the method of preparing the astaxanthin compound composition. The astaxanthin compound composition comprises Haematococcus pluvialis ingredient, extract of wolfberry, extract of jujube, and arginine. The preparation system includes a mixing unit and an additive-adding unit, those which operate sequentially to prepare a compound astaxanthin compound composition, the invention thus provides a stable and sustainably active compound astaxanthin compound composition with long shelf-life, which can bring favorable effects on regulating the lipid profile.

Abstract: A fuel cell stack may include stacking multiple cell units, each of which has a metal first separator plate and a second separator plate positioned opposite to the first separator plate with a membrane electrode assembly interposed therebetween, wherein the first and second separator plates of adjacent cell units are disposed to face each other and bonded to each other by an adhesive, the adhesive having an adhesive property varying according to a temperature change.

Abstract: A method of increasing uniformity in light from a light source at a plurality of targets of the light includes locating a plurality of movable aperture elements between the light source and the targets. Each aperture element defines an aperture through which the light passes from the light source to an associated one of the plurality of targets associated with the aperture element along a longitudinal axis of the aperture element. The method also includes moving at least one of the aperture elements along its longitudinal axis to change a feature of light incident on the target associated with the aperture element.

Abstract: An LED tube lamp comprises a glass tube, two end caps coupled to a respective end of the glass tube, an LED light strip attached to an inner circumferential surface of the glass tube, a protective layer disposed on a surface of the LED light strip, a plurality of LED light sources mounted on the LED light strip, two first soldering pads arranged at an end of the LED light strip, two notches formed at an edge of the end of the LED light strip, a power supply module configured to drive the plurality of LED light sources. The protective layer comprises two openings to expose the two first soldering pads. The power supply module comprises a printed circuit board comprising two second soldering pads and each of the two first soldering pad soldered to the respective second soldering pad by a solder. The solder is disposed on the first soldering pad, the corresponding second soldering pad and in the corresponding notch.

Abstract: The present disclosure relates to a fuel cell stack having a cathode-side separator and an anode-side separator which are made of different materials to prevent performance degradation of stacks and corrosion and damage of components. A fuel cell stack according to exemplary embodiments of the present disclosure may have multiple unit cells stacked therein, in which each unit cell of the multiple unit cells may include: a membrane electrode assembly (MEA); a pair of gas diffusion layers (GDLs) disposed on opposite surfaces of the MEA; and an anode-side separator and a cathode-side separator disposed to face each other, the MEA and the pair of GDLs being disposed therebetween, in which the cathode-side separator has a corrosion resistance higher than a corrosion resistance of the anode-side separator.