Results 21 to 30 of about 176 (133)

Dynamic coupling modelling and application case analysis of high-slip motors and pumping units.

open access: yesPLoS ONE, 2020
To solve the issues and difficulties in the high-coupling modelling of beam pumping units and high-slip motors, external characteristic experiments of high-slip motors were performed where the external database and characteristic correlation equations of
Ziming Feng   +5 more
doaj   +1 more source

Actuation Strategies for Underwater Jet‐Propelled Soft Robots

open access: yesJournal of Field Robotics, Volume 43, Issue 6, Page 3868-3892, September 2026.
ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone   +3 more
wiley   +1 more source

Wear analysis and life prediction of sucker rod and tubing under ternary emulsion lubrication in Daqing oilfield: a case study in block H

open access: yesJournal of Petroleum Exploration and Production Technology, 2023
Daqing Oilfield as the world’s largest application area of alkali–surfactant–polymer (ASP) flooding, in recent years, with the increase in aging wells, the eccentric wear and deformation of sucker rod and pipe during oil production has become more and ...
Chengting Liu   +4 more
doaj   +1 more source

Genotype‐Dependent Effects of Mechanical Stretch and GATA4‐Targeted Compound 3i‐1262 in Cardiomyopathy Patient–Derived hiPSC‐Cardiomyocytes

open access: yesBasic &Clinical Pharmacology &Toxicology, Volume 139, Issue 3, September 2026.
ABSTRACT Genetic hypertrophic and dilated cardiomyopathies (HCM and DCM, respectively) are characterised by structural and functional abnormalities that can lead to heart failure. However, current therapies mainly reduce symptoms. Patient‐derived human induced pluripotent stem cell (hiPSC)–derived cardiomyocytes provide a valuable platform to study ...
Saana Pohjavaara   +5 more
wiley   +1 more source

The Rod String Loads Variation during Short-Term Annular Gas Extraction

open access: yesEnergies, 2022
This paper highlights field studies to determine the nature of variations in the load on the sucker-rod string during short-term gas extraction from the wellbore annulus.
Alexander Vladimirovich Artyukhov   +4 more
doaj   +1 more source

A Lightweight, 3D‐Printable, Low‐Cost, “One‐Click” Dorsal Skin Window for High‐Quality Long‐Term Multimodal Subcutaneous Tumor Imaging

open access: yesAdvanced Healthcare Materials, Volume 15, Issue 31, 21 August 2026.
An innovative, lightweight 3D‐printed skinfold chamber system is presented for long‐term intravital imaging. This affordable, biocompatible platform simplifies surgical implantation and allows high‐resolution, multimodal visualization of the tumor microenvironment for up to four weeks.
Iván Cortés Domínguez   +9 more
wiley   +1 more source

The Sucker Rod Pump Parameters Optimization of Horizontal Wells with ASP Flooding Considering the Influence of Centralizers

open access: yesMATEC Web of Conferences, 2016
The centralizers can add the polished rod load, and affect the pumping system efficiency. A pumping system efficiency model has been built by considering the influence of centralizers on polished rod load.
Jiang Zhen-Hai
doaj   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

open access: yesAdvanced Robotics Research, Volume 2, Issue 4, August 2026.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang   +4 more
wiley   +1 more source

On Sucker Rod Pump Systems with Data Analysis

open access: yesApplied Mechanics
A sucker rod pump is an artificial lift system widely used in oil wells to extract crude oil from deep underground. Due to the clearance between the barrel and the pump plunger, a phenomenon termed slippage occurs in which the annulus column of oil ...
Sheldon Wang   +4 more
doaj   +1 more source

Stress History Establishes a Transient Tolerant State That Shapes Antibiotic Survival Upon Resuscitation

open access: yesAdvanced Science, Volume 13, Issue 44, 7 August 2026.
High‐throughput single‐cell analysis of resuscitating bacteria reveals a starvation‐history‐dependent transiently tolerant subpopulation that survives β$\beta$‐lactam exposure by temporarily reducing growth. Distinct from classical persisters, these actively growing yet dynamically modulated cells dominate survival across clinically relevant antibiotic
Kieran Abbott   +5 more
wiley   +1 more source

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