Results 41 to 50 of about 176 (133)

A Steerable and Expandable Magnetic Aspiration Catheter for Enhanced Aspiration Thrombectomy

Advanced Intelligent Systems, Volume 8, Issue 7, July 2026.
This article presents a novel magnetic aspiration catheter (MAC) that can be both actively steered and undergo distal‐end expansion via externally applied magnetic fields. The MAC facilitates precise branch selection and enhances clot engagement by improving endovascular navigation and aspiration efficiency. Phantom experiments validate its feasibility
Hakjoon Lee, Xiao Dong, Dong‐in Kim, A. M. Masum Bulbul Chowdhury, Nader Latifi Gharamaleki, Jin‐young Kim, Sung Won Youn, Hongsoo Choi   +7 more
wiley   +1 more source

Fault Diagnosis of Sucker Rod Pump Based on Deep-Broad Learning Using Motor Data

IEEE Access, 2020
Conventional fault diagnosis methods of sucker rod pump (SRP) mainly focus the operating status of oil well by identifying the dynamometer cards (DCs), which are limited by the sensor maintenance and calibration, battery replacement and safety hazards ...
Jingliang Wei, Xianwen Gao
doaj   +1 more source

Hydrodynamic Performance of a Novel Wave‐Driven Pump for Artificial Downwelling of Surface Water in Coastal Waters

Engineering Reports, Volume 8, Issue 7, July 2026.
Diagram of the novel wave‐driven pump system: (a) components; (b) working principle; (c) buoy subsystem; (d) pipe subsystem. ABSTRACT Artificial downwelling of oxygen‐rich surface water (ORSW) has recently gained interest among environmental engineers as a potential solution for alleviating hypoxia in coastal waters.
Kyong‐Yong Min, Un‐Ryong Rim, Ryong‐Chol Kwon   +2 more
wiley   +1 more source

POWER-EFFICIENCY ANALYSIS OF OIL WELL SYSTEMS WITH SUCKER ROD PUMPING UNITS

Известия высших учебных заведений: Нефть и газ, 2015
The purpose of this paper is to analyze the power efficiency of oil well systems with sucker rod pumping units. For this study a chain-drive of HRC 80-6-02 type and a similar performance drive HRC 80-6-02 balancer pumping unit were selected. Based on the
A. M. Sagdatullin
doaj   +1 more source

Control measuring and information system of the experimental stand

Известия высших учебных заведений: Проблемы энергетики, 2020
Modern trends in the development of technology are based on the need for experimental studies of the equipment being developed in laboratory conditions with the maximum approximation of the operating modes to real ones.
A. N. Tsvetkov, V. Yu. Kornilov, A. R. Safin, A. G. Logacheva, T. I. Petrov, N. E. Kuvshinov   +5 more
doaj   +1 more source

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

Meteoritics &Planetary Science, Volume 61, Issue 7, Page 1288-1308, July 2026.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson, S'lindile S. Wela, Leonidas C. Vonopartis, Marco A. G. Andreoli   +3 more
wiley   +1 more source

Research on Feature Extraction of Indicator Card Data for Sucker-Rod Pump Working Condition Diagnosis

Journal of Control Science and Engineering, 2013
Three feature extraction methods of sucker-rod pump indicator card data have been studied, simulated, and compared in this paper, which are based on Fourier Descriptors (FD), Geometric Moment Vector (GMV), and Gray Level Matrix Statistics (GLMX ...
Yunhua Yu, Haitao Shi, Lifei Mi
doaj   +1 more source

ELECTROMECHANICAL DRIVE OF PRODUCTION WELL SUCKER ROD PUMP

Известия высших учебных заведений: Нефть и газ, 2017
The paper considers the design and operation of electromechanical drive of sucker rod pumps, which received a patent for utility model. The proposed device allows to significantly reduce weight and size dimensions of the drive mechanism of serial sucker ...
R. B. Bulatov, L. G. Tugashova
doaj   +1 more source

A Uniform and Reduced Mathematical Model for Sucker Rod Pumping [PDF]

, 2004
The dynamic mathematical models were greatly developed to describe the motion of the sucker-rod pumping system since 1960s and various mathematic models based on different assumptions were presented. This paper does a study in three sides. First, a mathematical model is presented to describe the sucker-rod string with longitudinal and transverse ...
Leiming Liu, Chaonan Tong, Jianqin Wang, Ranbing Liu   +3 more
openaire   +1 more source

Update of the risk assessment on emerging and novel brominated flame retardants in food

EFSA Journal, Volume 24, Issue 7, July 2026.
Abstract The European Commission asked EFSA to update its 2012 risk assessment on Emerging and Novel brominated flame retardants (BFRs) in food. Since the previous Opinion, further information was collected for a total of 27 BFRs. The CONTAM Panel concluded that TDBPP, DBPNG and TBNPA are considered genotoxic and carcinogenic.
EFSA Panel on Contaminants in the Food Chain (CONTAM), Helle Katrine Knutsen, Agneta Åkesson, Vasileios Bampidis, Margherita Bignami, Laurent Bodin, James Kevin Chipman, Gisela Degen, Antonio Hernández‐Jerez, Tim Hofer, Christer Hogstrand, Stefano Landi, Jean‐Charles Leblanc, Kyriaki Machera, Evangelia Ntzani, Isabelle P. Oswald, Guido Rychen, Salomon Sand, Katharina Vejdovszky, Barbara Viviani, Emilio Benfenati, Diane Benford, Andy Hart, Martin Rose, Henri Schroeder, Christiane Vleminckx, Martine Vrijheid, Edoardo Carnesecchi, Violetta Costanzo, Andrea Gissi, Eirini Kouloura, Luisa Ramos Bordajandi, Francesca Riolo, Christer Hogstrand   +33 more
wiley   +1 more source