Other

Guangdong Oppo Mobile Telecommunications Corp., Ltd.

Nanjing Haohe Biotechnology Co., Ltd.

Qing Xu

Hao Liu

He Huang

Jianguo Zhang

Wei Tian

Shuang Li

Zhen Gao

Zhanyong Li

Ruifang Wang

Xinyuan Gao

A zoom lens, a camera module, and an electronic device are provided. A first control end and a second control end of the zoom lens respectively control a second lens assembly and a third lens assembly to move for zooming; a third control end and a fourth control end control, under a first target focal length, the third lens assembly to move for focusing, and control, under a second target focal length, the third lens assembly to move for focusing, and the first target focal length is different from the second target focal length.

Zoom lens, camera module, and electronic device

An optical lens optical lens includes a prism, a first lens group, a second lens group, and a third lens group arranged from the object image to the image side. A first diaphragm is between the first lens group and the prism. A second diaphragm is between the second lens group and the third lens group or the first lens group. In the long-focus state, the first diaphragm is an aperture diaphragm, and the second diaphragm is a flare eliminating diaphragm. In the short-focus state, the second diaphragm is an aperture diaphragm, and the first diaphragm is a flare eliminating diaphragm.

Optical lens, camera module and image capturing device

Disclosed are a zoom lens, a zoom method and a terminal. The zoom lens includes n lens groups, n reflecting elements and n imaging planes, where n is an integer greater than or equal to 2. The n lens groups and an n-th imaging plane are arranged sequentially along an optical axis. A first reflecting element is configured to receive and reflect first incident light to a first lens group. An i-th imaging plane is arranged between an i-th lens group and an (i+1)-th lens group, where i is an integer greater than or equal to 1 and less than n. A j-th reflecting element is disposed between a (j−1)-th lens group and a j-th lens group, and is configured to be moved and/or rotated to enable the zoom lens to zoom, where j is an integer greater than 1 and less than or equal to n.

Zoom lens, zoom method and terminal

The disclosure discloses anengineered strain for reducing byproduct fumaric acid in a fermentation process of L-malic acid. Theengineered strain is anengineered strain in which a fumarate hydratase gene fum is knocked out. The disclosure overcomes the defects in the prior art, in the current process of producing malic acid through fermentation of, byproduct fumaric acid can be accumulated with the generation of malic acid so as to cause the improved cost of the subsequent malic acid purification process. The disclosure provides anengineered strain in which a fum gene is knocked out and a method for greatly reducing byproduct fumaric acid in the fermentation production of

Method AMD strains for reducing byproduct fumaric acid in fermentation process of L-malic acid and use thereof

The disclosure discloses an Aspergillus niger engineered strain for reducing byproduct succinic acid in a fermentation process of L-malic acid. The Aspergillus niger engineered strain is an Aspergillus niger engineered strain in which fumaric acid reductase frdA and fumaric acid reductase flavoprotein subunit frdB are simultaneously knocked out. The disclosure provides an frdA and frdB gene double-knockout Aspergillus niger strain, and a method for greatly reducing byproduct succinic acid in a fermentation process of L-malic acid. By the disclosure, the byproduct succinic acid accumulated in a production process of malic acid through fermentation of Aspergillus niger is significantly reduced, a cost in a downstream separation and purification process of malic acid is decreased, and good strains are provided for producing malic acid via industrial fermentation.

Method and strains for reducing byproduct succinic acid in fermentation process of L-malic acid and use thereof

A method for preparing high specific surface area activated carbon through rapid activation, comprises the following steps: 1) selecting biomass raw material with a particle size of 0.3-0.9 mm; immersing the biomass raw material in a chemical reagent for 3-6 hours; and drying the biomass raw material in a constant-temperature drying oven of 100&#xb0; C.-150&#xb0; C. after immersing is ended; 2) stirring or crushing the dried material to form granular material after drying is completed; and 3) adopting a fluidized bed or a spouted bed as an activation reactor; increasing the temperature of the activation reactor to 700-800&#xb0; C.; introducing fluidized gas; placing quartz sand; placing the granular material obtained in step 2); activating for 1-10 min; immediately discharging the material after activation is ended; and washing the material with water until the material is neutral to obtain activated carbon with a specific surface area of 1267-1359 m/g.

Method for preparing high specific surface area activated carbon through rapid activation under fluidization

A method for automatically dividing trademark figurative element codes is disclosed, including: establishing a sample trademark library and establishing a corresponding relationship between sample trademarks and division data for figurative element codes of known filed/registered figurative trademarks; extracting and processing image feature information of the sample trademarks, and establishing a corresponding relationship between the sample trademarks and the extracted image feature information; extracting and processing image feature information of a trademark to be identified; performing a matching retrieval by taking the image feature information of the trademark to be identified as a retrieval condition, and finding out a sample trademark with a highest similarity degree to the image feature information of the trademark to be identified, and a corresponding trademark figurative element code; outputting the trademark figurative element code corresponding to the sample trademark with a highest similarity degree to the image feature information of the trademark to be identified as a figurative element code of the trademark to be identified. By means of the method, the trademark figurative element codes of a figurative trademark can be automatically divided.

Trademark graph element identification method, apparatus and system, and computer storage medium

A trademark retrieval method, comprising: establishing a sample trademark library and establishing a correlation between sample trademarks and division data for figurative element codes of known pending or registered figurative trademarks; extracting and processing image feature information about the sample trademarks, and establishing a correlation between the sample trademarks and the extracted image feature information; extracting image feature information about a trademark to be retrieved; carrying out matching retrieval by taking the image feature information as a retrieval condition, and finding out a sample trademark reaching a pre-determined similarity degree, and a sample trademark with the highest similarity degree and a corresponding figurative element code; acquiring and confirming a figurative element code of the trademark to be retrieved; taking the figurative element code as a retrieval condition to carry out matching retrieval, and finding out a matching sample trademark; collecting a result retrieved by taking the image feature information as the retrieval condition and a result retrieved by taking the figurative element code as the retrieval condition; and sequencing the collected trademarks according to the similarity degree of the image feature information. By means of the present disclosure, the standardized retrieval of figurative trademarks can be realized.

Trademark retrieval method, apparatus and system, and computer storage medium

Astrain, mutagenesis and screening methods thereof, and methods of producing fumaric acid by fermentation. The strain is named asME-F13, and deposited in China Center for Type Culture Collection with depository number CCTCC M 2010351. The strain is obtained by physically mutagenizing the original strain ME-F12 through ion injection, culturing the processed bacteria on the solid selective plate containing 2-D-deoxylucose (2-DG) and picking up 2-DG-resistant single colony. The strain is capable of simultaneously saccharifying starchy material and fermenting it to produce fumaric acid. With an improved enzymatic activity, the strain can be directly used to ferment raw starchy materials without needing pre-saccharifying.

Growing community of inventors

Guangdong, China

Qing Xu