Results 81 to 90 of about 6,411,088 (239)

Continuum Robots in Surgery: From Engineering Design to Clinical Practice

Advanced Robotics Research, EarlyView.
The hyper‐redundant nature of continuum robot structures enables near‐infinite degrees of freedom leading to immense potential for medical applications. This review provides a historical background of continuum robots and novel ideas shaping their progress to current structural design, sensing technology, modeling techniques, and control methods.
Griffin Smith, Kaitlyn Clancy, Siwen Xie, Xiaochen Li, Sarah Khalife, Benjamin van der Woerd, Onaizah Onaizah   +6 more
wiley   +1 more source

Chemical sand production control: a review of materials, methods and characterization

Frontiers in Energy Research
Sand production is one of the challenges facing the oil industry. This paper reviews the latest research advances in chemical sand control and aims to provide a reference for related researchers. Firstly, the commonly used chemical sand control materials
Zhenqiang Xu, Zhenqiang Xu, Kaixiang Shen, Kaixiang Shen, Jiawei Zhou, Jiawei Zhou, Qisheng Huang, Pingli Liu, Juan Du, Jia Wu   +9 more
doaj   +1 more source

A robust fuzzy logic-based model for predicting the critical total drawdown in sand production in oil and gas wells. [PDF]

PLoS One, 2021
Alakbari FS, Mohyaldinn ME, Ayoub MA, Muhsan AS, Hussein IA.   +4 more
europepmc   +1 more source

WorMa: An Undulatory Robot With Center of Mass Regulation via Internal Fluid Redistribution for Amphibious Locomotion

Advanced Robotics Research, EarlyView.
WorMa is an amphibious undulatory robot that uses Center of Mass redistribution as the sole terrain adaptation mechanism. This mechanism is based on internal fluid mass redistribution through a pump‐driven latex balloon system that creates three profiles: head‐biased, balanced, and tail‐biased.
Daniil Filimonov, Nana Obayashi
wiley   +1 more source

Dual‐Mode Gripper With Suction and Shape‐Adaptive Freezing Grasps

Advanced Robotics Research, EarlyView.
This study presents a dual‐mode robotic gripper that combines vacuum suction with a shape‐adaptive freezing grasp. The freezing mode uses a compliant rubber membrane, a sprayed water layer, and dry‐ice powder to generate ice‐mediated adhesion while conforming to complex geometries.
Takuma Yanagisawa, Toshihiro Nishimura, Yosuke Suzuki, Tokuo Tsuji, Tetsuyou Watanabe   +4 more
wiley   +1 more source

Adult Sex Ratio as a Demographic Feedback Linking Mating Systems, Parental Care, and Evolution

Advanced Science, EarlyView.
Breeding systems are some of the most diverse social behavior, and our team is investigation the evolutionary causes of this diversity. This review summarises our research carried out at the University of Bath. We argue that demographic components of wild populations, especially the adult sex ratio, plays a key role driving breeding system variation ...
Tamás Székely, Oscar G. Miranda
wiley   +1 more source

Leishmania manipulation of sand fly feeding behavior results in enhanced transmission [PDF]

, 2007
In nature the prevalence of Leishmania infection in whole sand fly populations can be very low (
Rogers, Matthew E, Rogers Matthew E, Bates, Paul, Matthew E. Rogers, Matthew E Rogers, Bates, Paul A, Paul A Bates, Rogers, Matthew E., Bates Paul A, Paul A. Bates   +9 more
core   +1 more source

A Worm‐Inspired Origami Robot with Multimodal Locomotion for Adaptive Mobility in Complex Pipeline Environments

Advanced Science, EarlyView.
An origami worm‐inspired robot achieves multimodal locomotion in confined pipelines through mechatronic integration that embeds actuation, control, and communication within each origami module. Large, reversible configuration and dimensional changes enable 25 gaits synthesized by a unified framework across peristaltic, inchworm, and wheel‐rolling modes
Qiwei Zhang, Kangning Tan, Zihan He, Hongsen Pang, Yanjie Wang, Hongbin Fang, Jian Xu   +6 more
wiley   +1 more source

Analysis on Casing Deformation and Buckling Risk in Sand Production Section of Thermal Recovery Horizontal Wells

Shiyou jixie
Considering the impact of sand production from reservoir on casing deformation and stability in thermal recovery wells, a test was conducted to investigate how high temperature steam affects the rock properties of heavy oil reservoirs.Combined with heat ...
Xiao Yao, Li Jin, Xu Tao, Yuan Weiwei, Zhang Qilong   +4 more
doaj  

Optimization of Sand Control in Bohai Oilfield based on LS-SVM

Shiyou jixie, 2021
Co., Ltd.; State Key Laboratory of Offshore Oil Exploitation)The reservoir of Bohai Oilfield is mainly composed of loose sandstone, and the commonly used empirical sand production prediction and sand control design methods are not specific to single well.
Zhang Qilong, Han Yaotu, Gong Ning, Li Jin, Chen Zhuo   +4 more
doaj