Colgate Palmolive Company

Nanjing Chervon Industry Co., Ltd.

Nanjing Hydraulic Research Institute

China University of Mining and Technology

Jiangsu Changjiang Electronics Technology Co., Ltd.

Nanjing Institute of Astronomical Optics & Technology, National Astronomical Observatories, Cas

Kai Zhang

Wen Jin Xi

Guang Sheng Guo

Yanmei Ji

Bo Zhang

Wenjin Xi

Guangsheng Guo

Su Zhang

Xunzhuang Qiu

Yu Liu

Xi Wen Jin

Ji Yan Mei

Zhuo Li

Lei Wang

Yan Mei Ji

Ming Li

Yu Wu

Feng Ju

Peng Wu

Haipeng Wang

Youhai Zhang

Yaqin Wang

Hai Pu

Mingshun E

Chengdong Liu

Guangya Fan

Yanlong Chen

Hao Chen

Jiangfeng Liu

Jinbao Sheng

Christopher Watson

Yan Xiang

Wen-Jin Xi

Changsheng Gao

Xinyi Liu

Xin Jiang

Chaoda Bi

Jingdong Jiang

Xiaojing Liao

Bingbing Nie

Fudong Chi

Sunyan Wang

Bo Dai

Yakun Wang

Yongtian Zhu

Yi Chen

Zhongwen Hu

Zhen Tang

Hangxin Ji

Jincheng Fan

Zhiwei Feng

Haotian Liu

A thin film type image slicer device comprises a main body prism, a flat optical element, and an optical film. A reflective cavity is formed between the optical film and a second surface of the flat optical element; the optical film has an oblique side at an angle θ with respect to a projection direction of a light beam reflection forward direction in the reflective cavity; the light beam repeatedly passes through the oblique side in the reflection forward direction; an image spot is sliced into a plurality of sliced images with the same width; and the plurality of sliced images are linearly arranged in an arrangement direction perpendicular to the slicing direction; and chief rays of the light beam corresponding to each sliced image are parallel to each other. An operating system includes a pre-optical system, the thin film type image slicer device and a subsequent optical system.

Thin film type image slicer device and operating system thereof

The present disclosure provides an underwater detection method for contact leakage of a tunnel joint of a dam culvert, including: obtaining an underwater image sequence of the culvert by an underwater robot; preprocessing and registering the underwater image sequence; extracting particle information appearing in the underwater image sequence based on the registered underwater image sequence; constructing a three-dimensional fluid velocity distribution map based on the particle information, and determining leakage situation according to the three-dimensional fluid velocity distribution map; and superimposing the three-dimensional fluid velocity distribution map on a preconfigured three-dimensional culvert model, and rendering and displaying it. The present disclosure can adapt to the complex and changeable underwater environment inside the culvert, it has a high sensitivity to fine leakage in the deep layer, it can realize the accurate measurement and trend prediction of leakage, and it can automate the detection process to reduce manual dependence.

Underwater detection method and system for contact leakage of tunnel joints of dam culvert

The present invention includes an anti-ice pushing/pulling device installed on the slope of an earth-rock dam and an ice thrust calculation method. The device is arranged in a groove formed on the surface of an upstream slope of the earth-rock dam in the winter water level change area, and includes an upper concrete slab and a lower concrete slab hinged by means of a rotating shaft structure, where the rotating shaft structure is located at the end of the groove in the dam slope far away from the dam crest; a jack is arranged between the two concrete slabs to adjust the flip angle of the upper concrete slab; a plurality of rectangular grooves are formed on the surface of the upper concrete slab, and a combined structure formed by splicing concrete blocks is arranged in the rectangular grooves; and holes are formed on the concrete blocks.

Anti-ice pushing/pulling device installed on slope of earth-rock dam and ice thrust calculation method

Riding lawn mower

Battery pack

A mechanical constant-resistance single prop continuous prop lifting pre-tightening device, structurally composed of a continuous prop lifting device, a pressurizing system, an oil supply line and a monitoring unit. The continuous prop lifting device is a core component, comprising a hydraulic cylinder, a prop barrel clamping sleeve ring and a prop rod clamping sleeve ring. The prop rod clamping sleeve ring is fixedly connected with a piston rod of the hydraulic cylinder by means of a cylinder head seat, and the prop barrel clamping sleeve ring is fixedly connected with a cylinder body of the hydraulic cylinder. With continuous pressurization of the pressurizing system, a cohesion occurs between the continuous prop lifting device and a prop rod, so that the prop rod of a single prop is lifted up to come into contact with a top plate and provide a pre-tightening force.

Mechanical constant-resistance single prop continuous prop lifting pre-tightening device and method

Toothbrush

Portable battery backpack

Oral care implement

Growing community of inventors

Jiangsu, China

Kai Zhang