Abstract: Illustrative surge protectors and surge protection methods provide accurate clamp level control during voltage transients and surge events. One illustrative surge protector includes: a shunt transistor having a source coupled to ground and a drain coupled to a conductor at a supply voltage; and an operational amplifier having: an output coupled to a gate of the shunt transistor, an inverting input coupled to a reference voltage Vref, and a noninverting input coupled to receive a sense voltage, the sense voltage being a fixed fraction f of the supply voltage, the operational amplifier being configured to drive the shunt transistor to shunt any excess current when the supply voltage reaches a clamp voltage Vc=Vref/f.

Abstract: An optical imaging lens includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element arranged in order from an object side to an image side along an optical axis. Each lens element has an object-side surface and an image-side surface. The image-side surface of the second lens element has a concave portion in a vicinity of the optical axis; the object-side surface of the third lens element has a concave portion in a vicinity of a periphery of the third lens element; the image-side surface of the fourth lens element has a convex portion in a vicinity of a periphery of the fourth lens element; and the image-side surface of the sixth lens element has a convex portion in a vicinity of the optical axis.

Abstract: Disclosed are a material analysis method based on the crystal structure database, a system, a computer-readable storage medium and an application. The material analysis method includes comparing experimental pattern information obtained from examination of a to-be-tested sample with theoretical pattern information calculated from material structure data in the crystal structure database, and obtaining crystallographic information and phase composition of the to-be-tested sample through intelligent analysis. The crystallographic information include space group, unit cell parameter, and specific coordinates of atoms in unit cell. The crystal structure database has material structure data obtained by experimental measurement and/or theoretical prediction, including chemical formula, space group, unit cell parameter and specific coordinates of atoms in unit cell.

Abstract: A display panel includes a substrate, a planarization layer disposed on the substrate, a plurality of first electrodes arranged in an array, and a plurality of light-emitting function layers respectively covering the first electrodes. The planarization layer includes a planarization body and a plurality of protrusions arranged in a first direction on the planarization body, and each of the protrusions extends along a second direction. In the first direction, each first electrode is located between two adjacent protrusions and spaced from at least one of the two adjacent protrusions by a gap. The gap is filled with a part of one of the light-emitting function layers covering the first electrode.

Abstract: An optical imaging lens may include a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, an eighth lens element and a ninth lens element positioned in an order from an object side to an image side. Through designing concave and/or convex surfaces of the lens elements, the optical imaging lens may increase resolution, increase aperture stop and image height, and maintain well image quality.

Abstract: The present application discloses a method, system, and computer system for managing policy configurations. The method includes (i) receiving a set of predefined security policy rules, (ii) determining, based at least in part on the set of predefined security policy rules, one or more security policy rules that do not satisfy one or more predefined requirements, (iii) performing a priority or position analysis to determine a relationship among a plurality of security policy rules, and (iv) providing a report pertaining to the one or more security policy rules.

Abstract: An optical imaging lens includes a first lens element to a sixth lens element. An optical axis region of the image-side surface of a first lens element is convex, a periphery region of the image-side surface of the second lens element is concave, an optical axis region of the image-side surface of the third lens element is convex, a periphery region of the image-side surface of the third lens element is convex, the fourth lens element has positive refracting power and a periphery region of the object-side surface of the fourth lens element is concave, an optical axis region of the object-side surface of the fifth lens element is convex, an optical axis region of the object-side surface of the sixth lens element is convex and a periphery region of the object-side surface of the sixth lens element is concave to satisfy Fno*AAG/(T3+G34)?3.000.

Abstract: A pressure seal device for large-diameter high-temperature, high-pressure, long-distance thermal pipeline, includes a seal plate, wherein the seal plate is provided with an electromagnet and a first sealing strip, the seal plate is provided with a drainage pipeline, and one end of the drainage pipeline is provided with a first flange; the pressure seal device further includes a drainage belt and a connecting pipeline, wherein one end of the connecting pipeline is provided with a second flange detachably connected to the first flange, and an other end of the connecting pipeline is provided with a drainage opening, the drainage belt is mounted around the drainage opening, the drainage pipeline is provided with an on-off gate valve; the device further includes a flange plate detachably connected to the first flange, a first weld seam is provided between the seal plate and the thermal pipeline.

Abstract: An optical imaging lens includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element arranged in order from an object side to an image side along an optical axis. Each lens element has an object-side surface and an image-side surface. The image-side surface of the first lens element has a concave portion in a vicinity of the optical axis; the object-side surface of the second lens element has a convex portion in a vicinity of the optical axis; the image-side surface of the second lens element has a concave portion in a vicinity of a periphery of the second lens element; and the second lens element has positive refracting power.

Abstract: An optical imaging lens, including a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element disposed in sequence from an object side to an image side along an optical axis. The first lens element has positive refracting power, and an optical axis region of the image side of the first lens element is concave. A periphery region of the object side of the second lens element is convex. A periphery region of the image side of the third lens element is convex. An optical axis region of the image side of the fifth lens element is convex. The sixth lens element has negative refracting power. A periphery region of the object side of the eighth lens element is convex.

Abstract: An optical imaging lens includes a first lens element to a ninth lens element from an object side to an image side along an optical axis and each lens element has an object-side surface and an image-side surface. A periphery region of the object-side surface of the fourth lens element is concave, an optical axis region of the image-side surface of the fourth lens element is convex, an optical axis region of the object-side surface of the seventh lens element is concave, an optical axis region of the image-side surface of the eighth lens element is concave, and an optical axis region of the object-side surface of the ninth lens element is concave. Lens elements included by the optical imaging lens are only nine lens elements described above. An Abbe number of the fifth lens element ?5 and an Abbe number of the ninth lens element ?9 satisfy ?5+?9?100.000.

Abstract: The present application discloses a method, system, and computer system for managing policy configurations. The method includes (i) receiving a set of predefined security policy rules, (ii) determining, based at least in part on the set of predefined security policy rules, one or more security policy rules that do not satisfy one or more predefined requirements, (iii) performing a priority or position analysis to determine a relationship among a plurality of security policy rules, and (iv) providing a report pertaining to the one or more security policy rules.

Abstract: An optical imaging lens includes a first lens element to a fourth lens element, and each lens element has an object-side surface and an image-side surface. The first lens element has negative refracting power, lens elements included by the optical imaging lens are only the four lens elements described above, at least two lens elements in the optical imaging lens have positive refracting power and thicknesses of the at least two lens element along the optical axis are less than or equal to 250 microns, and the optical imaging lens satisfies the following relationships: V1+V2+V3+V4?165.000, V1 is an Abbe number of the first lens element, V2 is an Abbe number of the second lens element, V3 is an Abbe number of the third lens element, and V4 is an Abbe number of the fourth lens element.

Abstract: An optical imaging lens includes a first lens element to a seventh lens element; each lens element has an object-side surface and an image-side surface. A periphery region of the image-side surface of the third lens element is concave, an optical axis region of the object-side surface of the fourth lens element is concave, the fifth lens element has negative refracting power, an optical axis region of the object-side surface of the seventh lens element is convex, and a periphery region of the object-side surface of the seventh lens element is concave. Lens elements included by the optical imaging lens are only seven lens elements described above to satisfy 2.200?(T1+D42t72)/(Fno*D12t32) and 115.000??3+?4+?5.

Abstract: An optical imaging lens may include a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, an eighth lens element and a ninth lens element positioned in an order from an object side to an image side. Through designing concave and/or convex surfaces of the lens elements, the optical imaging lens may increase resolution, increase aperture stop and image height, and maintain well image quality.

Abstract: An optical imaging lens may include a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element positioned in an order from an object side to an image side. Through designing concave and/or convex surfaces of the lens elements, the optical imaging lens may increase resolution, enlarge aperture stop and image height, and maintain well image quality.

Abstract: Provided is an optical imaging lens, including a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element sequentially arranged along an optical axis from an object side to an image side. The first lens element has positive refracting power. A periphery region of the object-side surface of the second lens element is convex. The third lens element has positive refracting power. A periphery region of the image-side surface of the third lens element is concave. An optical axis region of the image-side surface of the fifth lens element is concave. An optical axis region of the image-side surface of the sixth lens element is convex. A periphery region of the object-side surface of the eighth lens element is convex.

Abstract: A method for making precipitated calcium carbonate is provided. The process includes providing a suspension having calcium hydroxide and adding a processed lime mud to the suspension prior to the completion of carbonation to precipitate calcium carbonate.

Abstract: An optical imaging lens includes a first lens element to an eighth lens element. The first lens element has positive refracting power, a periphery region of the image-side surface of the first lens element is concave, a periphery region of the object-side surface of the third lens element is concave, an optical axis region of the image-side surface of the sixth lens element is convex, an optical axis region of the object-side surface of the eighth lens element is convex, and a periphery region of the image-side surface of the eighth lens element is convex. Lens elements included by the optical imaging lens are only eight lens elements described above to satisfy D41t51/(T3+G34)?1.700.

Abstract: Disclosed herein are apparatuses and a method for improving wireless communication characteristics by matching transmitter antenna patterns to receiver antenna patterns. An embodiment operates by generating a station profile for each of a plurality of stations based on a structure of each of the plurality of stations and an antenna pattern group of each of the plurality of stations. The embodiment then identifies a station profile of a first station from among the plurality of stations based on information received from the first station. Finally, the embodiment searches for an antenna pattern for the first station using the antenna pattern group corresponding to the station profile.