30results about How to "Log reduction" patented technology

The invention relates to an etching apex non-doped intrinsic layer asymmetrical metal film vertical cavity surface emitting laser and a preparation method thereof. The invention comprises a Bragg reflector, a high resistive layer, an electrode, a substrate and a quantum well active region. The upper surface is etched with a round metal reflection film, a metal film lead, a contact layer of the metal film and an upper electrode and the upper electrode; the lower surface of the substrate is provided with the round metal reflection film, a lower surface metal film lead and a lower surface electrode. By introducing the non-doped intrinsic layer to etch the current aperture and combining the upper surface with the substrate surface to etch a metal film asymmetrical structure in order to implement the restriction to current and optical field, the invention has the efficacies of the electrode and the reflector of the metal film, simplifies a vertical cavity emitting laser array integration process, reduces the logarithm of distributed Bragg reflector, restricts the diffusion area of the current, improves the photoelectric coupling efficiency of injected current, avoids proton bombardment or respective oxidation process and is beneficial for integration as the intrinsic high-resistive layer and a chip implement the grown in one operation.

The invention discloses quality guarantee liquid, which is aqueous solution containing 0.01 to 2 percent of potassium sorbate, 0.01 to 2 percent of D-sodium isoascorbate, 0.01 to 2 percent of nisin and 0.01 to 2 percent of malic acid/citric acid/snow pear acid. The invention also discloses a processing method for preserving fruits and vegetables at room temperature. In the method, bacterial spores can be killed at low temperature under low pressure by combining the quality guarantee liquid and high-static pressure treatment so as to preserve the fruits and vegetables at the room temperature for a long term.

The invention discloses a glass melting furnace and a glass melting method. The glass melting furnace comprises a first stage melting tank and a second stage melting tank that are disposed in order. The glass melting method includes: heating the glass raw material to 700-800DEG C to decompose the carbonate in the glass raw material so as to generate a transition product; and heating the transition product to a temperature above 1200DEG C, and melting, clarifying and homogenizing the transition product. By adopting the technical scheme, the glass melting furnace and the glass melting method provided by the invention can use low-heat value fuel in the glass preparation process, reduce the overall energy consumption of the melting furnace, and improve the product quality.

System and methodologies are provided herein for low-distortion image watermarking. Parity relationships between multiple pixels and/or regions of an image can be leveraged as described herein to reduce the amount of toggling required to embed a watermark in an image, thereby increasing watermark efficiency and reducing visual artifacts introduced in a watermarked image. Various algorithms for leveraging parity relationships are described herein, including a Block-Overlapping Parity Check (BOPC) algorithm, a Champagne Pyramid Parity Check (CPPC) algorithm, and a Tree-Based Parity Check (TBPC) algorithm.

The invention discloses an image matching method based on bidirectional optimal matching point pairs, and the method comprises the following steps: S1, carrying out the bidirectional matching throughemploying an exhaustion method, obtaining the optimal matching points of feature points in an original image in a target image and the optimal matching points of the feature points in the target imagein the original image, and forming two optimal matching point pair sets; s2, calculating a bidirectional optimal matching point pair set according to the two optimal matching point pair sets; s3, removing wrong matching points in the bidirectional optimal matching point pair set; s4, calculating a transformation relation between the two images according to the reserved bidirectional optimal matching point pairs; s5, selecting matching point pairs meeting the transformation relation from the two groups of optimal matching point pair sets obtained in the step S1; and S6, obtaining an acceptablecorrect matching point pair between the two images. According to the invention, enough correct matching point pairs can be reserved on the premise that only a small number of wrong matching point pairs are introduced, the calculated amount when the wrong matching point pairs are removed is greatly reduced, and the accurate and stable transformation relation between the two images is calculated.

The invention discloses a conveyer for the production and processing of punched felt. The conveyer includes a material conveyor belt and a transmission retaining strip, the transmission retaining strip is installed on the outer wall of the outer end of the material conveyor belt, and 10 pairs of protective inhibiting devices are additionally arranged on a left side plate and a right side plate ofthe conveyer for the production and processing of the punched felt. The pair number of the protective inhibiting devices can be increased or decreased according to the need, the protective inhibitingdevices can make the punched felt production material on the material conveyor belt of the conveyer for the production and processing of the punched felt to be conveyed through keeping an establishedtransmission trajectory, and in this way, the punched felt production material can be conveyed sequentially and regularly; and the protective inhibiting devices can clamp and control the punched feltproduction material onto the middle section of the material conveyor belt for transmission, and in this way, the normally conveyed punched felt production material can be prevented from impacting theleft side plate or the right side plate.