Abstract: An optical system, a camera module, and an electronic device are disclosed. The optical system consists of six lenses having refractive power. The six lenses sequentially include a first and fifth lenses having positive refractive power, a second, fourth, and sixth lenses having negative refractive power. An object side surface and image side surface of the first lens, an object side surface of the third lens, an image side surface of the fourth lens, an object side surface of the fifth lens, and an object side surface of the sixth lens are convex near the optical axis. An image side surface of the second lens, an image side surface of the third lens, an object side surface of the fourth lens, and an image side surface of the sixth lens are concave near the optical axis.

Abstract: The various implementations described herein include methods and systems for coding video. In one aspect, a method includes receiving a video bitstream including a current coding block of a current image frame and determining that the current coding block is to be predicted in a weighted bi-prediction (WBP) mode. The method further includes in response to the current coding block being predicted in the WBP mode, determining that the current coding block is associated with two bi-prediction blocks and identifying a plurality of distinct weighting factor lists including at least a first list of positive weighting factors and a second list of mixed weighting factors. The method further includes selecting one of the weighing factor lists, identifying a first weighting factor from the weighing factor lists, and reconstructing the current image frame, including determining the current coding block by combining the two bi-prediction blocks based on the first weighting factor.

Abstract: A cell-testing apparatus for testing one or more cells includes a cell-test enclosure that includes at least one internal vent. The cell-testing apparatus also includes an external housing that contains the cell-test enclosure and that includes at least one exhaust vent that vents to outside the external housing. During testing, the cell-test enclosure is located within the external housing so as to define at least one explosion-gas pathway from the at least one internal vent to the at least one exhaust vent. In some embodiments, the venting axis of the internal vent(s) is perpendicular to the venting axis of the exhaust vent(s). In some embodiments, the vents each comprise one or more fenestrated plates. In some embodiments, the cell-test enclosure is a drawer-type enclosure including a cabinet and a drawer that is designed and configured to receive a battery cell for testing.

Abstract: An operation vehicle, comprising a vehicle body and a cab provided at a front end of the vehicle body, and further comprising a boom device. The boom device comprises at least seven booms hinged end to end in sequence. When the boom device is in a folded state, a fifth boom and a sixth boom are located on the same straight line, a seventh boom is located below the sixth boom, and end portions of at least two booms in the seven booms are located above the cab. The technical solutions of the present application overcome the defect in the prior art that the flexibility of boom construction of the operation vehicle is low.

Abstract: A display substrate and a display device. In the display substrate, a plurality of first output ends of the plurality of straight edge gate driving structures are connected to the plurality of first signal lines through a plurality of first connection structures, and a plurality of second output ends of the plurality of rounded corner gate driving structures are connected to the plurality of second signal lines through a plurality of second connection structures; the first conductive part and the second conductive part are located in a same conductive layer, and a number and a type of the plurality of via connection structures in each of the plurality of first connection structures are the same as a number and a type of the plurality of via connection structures in each of the plurality of second connection structures.

Abstract: The present disclosure generally relates to high-performance flexible thermoelectric generators (f-TEGs) for heat concentration and dissipation. In some embodiments, the f-TEGs can be incorporated into wearable devices. The f-TEG device can include an f-TEG network of thermoelectric units that include multifunctional thin copper disks that can be used as electrodes, heat concentrators and spreaders, spacers, and flexibility enablers. Each electrode can include a spacer extending therefrom to suppress the heat loss between the hot and the cold sides through conduction and convection across a thermoelectric pillar disposed therebetween. In some embodiments, the f-TEG network can be associated with a fabric to provide good wearability and comfort even in wet thermal environments.

Abstract: An impact tool includes a motor including or connected to a drive shaft for outputting power and is rotatable about a first axis, an impact assembly including a main shaft and a spring sleeved on the main shaft, a transmission assembly for transmitting the power output by the drive shaft to the main shaft, a main shaft bearing for supporting the main shaft, and a second bearing for supporting the drive shaft. The projections of the second bearing, the main shaft bearing and the spring on a reference plane perpendicular to the up and down direction have an overlapping region.

Abstract: An automatic detection function-integrated detection apparatus includes a drill rod and an elastic water storage bag; two sides of the drill rod are a head region and a tail region, respectively; an interior of the drill rod has a water supply channel, a side wall of the drill rod is provided with a first channel, and a first valve is disposed in the first channel. The automatic detection function-integrated detection apparatus and method for the water flowing fractured zone may complete the detection of the water flowing fractured zone while drilling, and thus the labor intensity of workers may be reduced.

Abstract: A multispectral light field imaging system includes a primary lens, a microlens array, a first relay lens, a dichroic lens, a second relay lens, a third relay lens, a first image sensor, a first filter, a second image sensor and a second filter, wherein the microlens array is located at an image plane of the primary lens; the first relay lens together with the second relay lens and the third relay lens forms a 1:1 relay lens group imaging system on a spectral band 1 light path and a spectral band 2 light path respectively; the dichroic lens forms an included angle of 45° with a light axis; the first image sensor is located at a focal plane of the second relay lens, and the second image sensor is located at a focal plane of the third relay lens.

Abstract: In some embodiments, temperature-testing apparatuses that each include a pair of spaced-apart pressure plates, a testing plate, and a pressure fixture. The testing plate may comprise a working face with a plurality of recesses that confronts a face of the battery cell being tested, a temperature sensor in each one of the plurality of recesses, and electronic circuitry in operative communication with each of the temperature sensors. In some embodiments, the pressure fixture is a constant-pressure mechanism. In some embodiments, the pressure fixture is a constant-gap pressure mechanism. Systems containing such temperature-testing apparatuses and methods of testing with such temperature-testing apparatuses are also disclosed.

Abstract: An optical imaging lens group includes a first lens through a seventh lens sequentially arranged from an object side to an image side along an optical axis. The first lens has positive refractive power, and object-side and image-side surfaces thereof are a convex surface and a concave surface, respectively. The second lens has negative refractive power, and object-side and image-side surfaces of the second lens are a convex surface and a concave surface, respectively. The fourth and fifth lenses both have refractive power. The third and sixth lenses both have positive refractive power. The seventh lens has negative refractive power, and an object-side surface thereof has a concave surface. A distance along the optical axis TTL from the object-side surface of the first lens to an imaging plane and half of a diagonal length ImgH of an effective pixel area on the imaging plane satisfy TTL/ImgH<1.3.

Abstract: The present disclosure discloses an optical imaging lens assembly including a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, which are sequentially arranged from an object side to an image side along an optical axis. The first lens has positive refractive power, and an object-side surface of the first lens is a convex surface. The second lens has refractive power, and an image-side surface of the second lens is a concave surface. The third lens has refractive power. The fourth lens has refractive power. The fifth lens has negative refractive power. A total effective focal length f of the optical imaging lens assembly and a combined focal length f123 of the first lens, the second lens and the third lens satisfy 0.6<f/f123<1.

Abstract: Provided is a pixel defining layer of an organic light-emitting diode display panel. The pixel defining layer includes: an insulating transparent cladding layer; and a reflecting layer in the transparent cladding layer, wherein the reflecting layer is configured to reflect light emitted from a light-emitting layer of the organic light-emitting diode display panel. Organic light-emitting diode display panels and methods for manufacturing an organic light-emitting diode display panel are also provided.

Abstract: Provided is a novel peripherally restricted multi-target cyclopeptide molecule for an opioid receptor and a neuropeptide FF (NPFF) receptor, or a pharmaceutically acceptable salt thereof. By using DN-9 as a chemical template, structural optimization is performed on opioid peptide and NPFF pharrnacophores by means of polypeptide chemical strategies such as amino acid replacement and cyclization modification to obtain a series of cyclopeptide molecules. The cyclopeptide molecules can activate both opioid receptors and NPFF receptors, and the analgesic activity and the analgesic duration thereof are greatly increased compared with parent DN-9 molecules, and opioid side effects such as analgesic tolerance, constipation, and addiction are reduced.

Abstract: The present disclosure provides a method for separating a neural crest derived cell from peripheral blood. In the present disclosure, a mononuclear cell is separated from the peripheral blood and then directly cultured, thereby maximizing use of a neural crest stem cell with a differentiation potential to avoid loss of the neural crest stem cell. In the method of the present disclosure, a sample to be separated is derived from the peripheral blood. The method shows less trauma and low cost. Most importantly, compared to extracting the neural crest derived cell from tissues, the neural crest derived cell extracted from the peripheral blood can be used clinically as a type of biomarker.

Abstract: The present disclosure discloses a camera lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens has negative refractive power; the second lens has positive refractive power, and an image-side surface thereof is a concave surface; the third lens has positive refractive power, and an image-side surface thereof is a convex surface; the fourth lens has refractive power; the fifth lens has refractive power; the sixth lens has positive refractive power; and the seventh lens has negative refractive power. And an effective focal length f2 of the second lens and a total effective focal length f of the camera lens assembly satisfy 2<f2/f<4.5.

Abstract: The disclosure discloses a photographic optical system, sequentially includes from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. Wherein the first lens has a positive refractive power, an object-side surface thereof is a convex surface, an image-side surface is a concave surface. The second lens has a negative refractive power, an object-side surface thereof is a convex surface, an image-side surface is a concave surface. The sixth lens has a negative refractive power. TTL is a distance from the object-side surface of the first lens to an imaging surface of the photographic optical system on the optical axis and ImgH is a half the diagonal length of an effective pixel area on the imaging surface of the photographic optical system, and TTL and ImgH satisfy TTL/ImgH<1.5.

Abstract: The present disclosure discloses an optical imaging system, sequentially from an object side to an image side of the optical imaging system along an optical axis, including: a first lens having refractive power; a second lens having negative refractive power; a third lens having refractive power; a fourth lens having positive refractive power; a fifth lens having refractive power; a sixth lens having refractive power; and a seventh lens having refractive power, a concave object-side surface, and a concave image-side surface. Half of a diagonal length ImgH of an effective pixel area on an imaging plane of the optical imaging system may satisfy ImgH>6.0 mm. A total effective focal length f of the optical imaging system and an entrance pupil diameter EPD of the optical imaging system may satisfy f/EPD<1.9.

Abstract: A membrane circuit board includes a first membrane substrate, a spacer substrate, a second membrane substrate and a third membrane substrate. The first membrane substrate includes a first gas channel and a first conductive contact. The spacer substrate includes a first gas hole and a second gas hole. The second membrane substrate includes a second gas channel, a second conductive contact, a third gas hole and a fourth gas hole. The second gas channel is in communication with the third gas hole and the fourth gas hole. The second gas channel is in communication with the first gas channel through the first gas hole and the second gas hole. The third membrane substrate includes a third gas channel. The third gas channel is in communication with the second gas channel through the third gas hole and the fourth gas hole.

Abstract: The present disclosure discloses an optical imaging lens assembly. The optical imaging lens assembly includes, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens has a positive refractive power and a convex object-side surface. The second lens has a negative refractive power. The third lens has a positive refractive power. Each of the fourth lens and the fifth lens has a positive refractive power or a negative refractive power. The sixth lens has a positive refractive power. The seventh lens has a negative refractive power, a concave object-side surface and a concave image-side surface. A combined focal length f12 of the first and second lenses and a combined focal length f34 of the third and fourth lenses satisfy:|f12/f34|?0.3.