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Theoretical calculation and analysis of the velocity of shaped charge jet with modified collapse velocity model: 《Petroleum Science》2024年第6期4311-4327,共17页Kun Jiang Shou-Chun Deng Hai-Bo Li; supported by the National Key R&D Program of China(2020YFA0711802)。; The application of perforating completion technology in oil and gas field development has gained widespread popularity.Enhancing the efficiency of oil and gas wells relies on increasing the penetration depth,which is ...; 关键词：Perforating shaped charge Linercollapsevelocity Jet velocity PER theory Energy exploitation

The influences of perforating phase and bedding planes on the fracture deflection in laminated shale: 《Petroleum Science》2024年第2期1221-1230,共10页Ming-Zhe Gu Mao Sheng Xiao-Ying Zhuang Xin-Yi Li Gen-Sheng Li; financially supported by the National Natural Science Foundation of China(Grant Nos.52074315&U19B6003)。; The perforating phase leads to complex and diverse hydraulic fracture propagation behaviors in laminated shale formations. In this paper, a 2D high-speed imaging scheme which can capture the interaction between perfor...; 关键词：SHALE Propagation PERFORATING BEDDING Structure

Perforating and ophthalmic artery variants from the anterior cerebral artery:Two case reports: 《World Journal of Clinical Cases》2023年第18期4392-4396,共5页Zhi-Xiao Mo Wen Li De-Fa Wang; BACKGROUND The diagnosis and therapy during surgery depend largely on a full account of anatomic characteristics.Apart from regular structures,the common,less common or even uncommon anatomic variations are critical f...; 关键词：Microsurgical anatomy Arterial variations Ophthalmic artery Perforating branches Case report

Research and Application of a Perforating and Drug Injection Machine: 《外文科技期刊数据库(文摘版)工程技术》2022年第4期189-193,共5页WANGQuanhua; The perforating and drug injecting machine uses an engine to drive a woodworking drill bit to perforate trees, and then the whole tree body is provided with the effective components of pesticides by injecting drugs in...; 关键词：PERFORATING INJECTION REDUCER

Perforating and nonperforating indications in repeated surgeries for Crohn's disease: 《World Journal of Clinical Cases》2022年第9期2733-2742,共10页Wei-Song Shen Xiao-Hui Huang Rui-Qing Liu Chen-Yang Li Yi Li Wei-Ming Zhu; Supported by Peking University Medicine Fund of Fostering Young Scholars’ Scientific&Technological Innovation Supported by the Fundamental Research Funds for the Central Universities,No. BMU2021PYB009;Peking University People’s Hospital Research and Development Funds,No. RDY2020-14;National Natural Science Foundation of China,No. 82100546; BACKGROUND Despite advances in medical therapy for Crohn’s disease(CD),most patients with CD require repeated resection surgeries.AIM To analyze the perforating and nonperforating indications of repeated CD operation...; 关键词：Crohn’s Disease ANASTOMOSIS PERFORATION Nonperforating

Magnetic field-mediated Janus particles with sustained driving capability for severe bleeding control in perforating and inflected wounds被引量：2: 《Bioactive Materials》2021年第12期4625-4639,共15页Qing Li Enling Hu Kun Yu Mengxing Lu Ruiqi Xie Fei Lu Bitao Lu Rong Bao Guangqian Lan; This work was supported by the National Natural Science Foundation of China(No.51703185,51803170,and 51803171);the Fundamental Research Funds for the Central Universities(nos.XDJK2019AC003 and XDJK2020B017).; Severe bleeding in perforating and inflected wounds with forky cavities or fine voids encountered during prehospital treatments and surgical procedures is a complex challenge.Therefore,we present a novel hemostatic st...; 关键词：Janus particle Sustained driving Magnetic guidance HEMOSTASIS Complex wound

A novel temporary keratoprosthesis technique for vitreoretinal surgery: 《International Journal of Ophthalmology(English edition)》2021年第11期1791-1795,共5页Christos Skevas Eileen Bigdon Alexander Steinhorst Toam Katz Philipp Schindler Robert Kromer Martin Stephan Spitzer; AIM:To investigate the safety of vitreoretinal surgery when using a soft contact lens as a temporary keratoprosthesis(TKP)in patients with severe corneal opacifications.METHODS:Three patients with simultaneous corneal...; 关键词：temporary keratoprosthesis combined vitreoretinal surgery perforating keratoplasty KERATOPROSTHESIS

Transcranial lateral perforating gunshot injury through skull base presenting without residual damage:A fortunate survivor被引量：1: 《Chinese Journal of Traumatology》2021年第3期183-186,共4页Amit Garg Abhishek Mandal Ipsita Aggarwal Anmol Galhotra Shouvik Das Sanjay Marwah; We reported a case of a 32 years old male presenting with a perforating gunshot injury in craniocerebral region 3 h after the assault.The bullet entered above the right zygomatic arch,travelling through the coronal pl...; 关键词：Gunshot injury Perforating injury Craniocerebral region

Dermoscopy of perforating lichen nitidus:a case report: 《Chinese Medical Journal》2020年第17期2135-2136,共2页Xiang-Qian Li Xi Chen Bo Li Juan Du You-Shu Hong Jian-Zhong Zhang Cheng Zhou; To the Editor:Perforating dermatoses is a group of diseases characterized by papulonodular rashes with the elimination of endogenous or exogenous materials through the epidermis.The primary perforating disorders inclu...; 关键词：NIT ANNULAR ELIMINATION

Epidemiology of perforating peptic ulcer:A population-based retrospective study over 40 years被引量：8: 《World Journal of Gastroenterology》2020年第35期5302-5313,共12页Aydin Dadfar Tom-Harald Edna; BACKGROUND The incidence of peptic ulcer disease has decreased during the last few decades,but the incidence of reported peptic ulcer complications has not decreased.Perforating peptic ulcer(PPU)is a severe form of th...; 关键词：Perforated peptic ulcer American Society of Anaesthesiologists classification Charlson Comorbidity Index Gastric ulcer Duodenal ulcer EPIDEMIOLOGY Incidence Clavien-Dindo classification of complications Mortality

PERFORATING