Results 101 to 110 of about 4,383 (225)

Sensitivity analysis of factors affecting torque and drag modelling

, 2014
As the modern day extended reached wells are getting longer and more complex, the torque and drag is one of the restraining aspects for achieving the target depth. Torque and drag becomes a precarious issue, for example it can be difficult to land the long completion string.
openaire   +2 more sources

Efficient and Adaptive Autonomous Guidance and Control of Planetary Rover With Improved Traction Controller and Dynamic Cost Map

Journal of Field Robotics, EarlyView.
ABSTRACT Planetary exploration is rapidly gaining importance within the space research community. Autonomous locomotion of rovers requires consideration of several mobility aspects to ensure safety, including avoiding hazardous areas that can cause the robot to become immobilized in soft soil or damaged in sharp terrains.
Alessio De Luca, Luca Muratore, Nikos G. Tsagarakis, Martin Azkarate   +3 more
wiley   +1 more source

Redefining Optimal Coverage Path Planning for FLS‐Equipped AUVs With Deep Reinforcement Learning

Journal of Field Robotics, EarlyView.
ABSTRACT Autonomous Underwater Vehicles (AUVs) have emerged as indispensable tools for a variety of subsea tasks, from habitat monitoring and seabed mapping to infrastructure inspection and mine countermeasures. A fundamental challenge in this field is Coverage Path Planning (CPP), the problem of ensuring complete and efficient area coverage.
Lorenzo Cecchi, Alberto Topini, Alessandro Bucci, Alessandro Ridolfi   +3 more
wiley   +1 more source

Press Hardening for Sustainable Lightweight Chassis Design in Heavy‐Duty Vehicles: A Material Performance and Life Cycle Assessment Approach

steel research international, EarlyView.
The article explores how high‐strength steels and press hardening revolutionize lightweight chassis design for heavy‐duty vehicles. It reveals that press hardened steels combined with shot peening can cut weight by up to 34% and reduce environmental impact by 21%–32%.
Violeta Vargas‐Parra, Sergi Parareda, Jose Jorge Espí‐Gallart, Jaume Pujante, Gustaf Gustafsson, Henrik Sieurin, David Frómeta, Daniel Casellas   +7 more
wiley   +1 more source

Real Time Torque and Drag Analysis during Directional Drilling

, 2013
The oil industry is generally producing oil and gas using the most cost-effective solutions. Directional drilling technology plays an important role especially because the horizontal wells have increased oil production more than twofold during recent years.
openaire   +2 more sources

Research on a Drone‐Based Vacant Parking Detection System

IEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
It can be difficult to know which spaces are available in parking lots and bicycle parking areas, so knowing the availability status is necessary for efficient parking. Therefore, in this study, we developed the drone that can display the availability status. Availability is determined by whether it can read a QR code attached to the ground. To conduct
Hiroki Mineshita, Syunsuke Wakamatsu, Hun‐ok Lim   +2 more
wiley   +1 more source

Evaluating the efficacy of tagging adhesives for insect tracking

Agricultural and Forest Entomology, EarlyView.
Two‐part epoxy resin delivered the strongest RFID tag adhesion on carabid beetles, exceeding polyvinyl acetate, cosmetic latex and cyanoacrylate adhesives. Adhesive performance was consistent across Harpalus, Leistus and Poecilus; species effects were non‐significant, supporting a broadly applicable protocol for carabid RFID tagging studies.
Leona C. R. Breen, Joe M. Roberts, Tom W. Pope   +2 more
wiley   +1 more source

Homo luzonensis and the role of homoplasy in the morphology of hominin insular species

Cladistics, EarlyView.
Abstract Homo luzonensis lived during the upper Pleistocene in the northern Philippines, east of the Wallace line. The few specimens attributed to this species show a mosaic of plesiomorphies for the genus Homo and apomorphies found in upper Pleistocene Homo species.
Pierre Gousset, Jérémie Bardin, Isabelle Rouget, Armand S. Mijares, Florent Détroit   +4 more
wiley   +1 more source

Kinetic and structural characterisation of domain‐specific angiotensin I‐converting enzyme inhibition by captopril, rentiapril and zofenoprilat

The FEBS Journal, EarlyView.
Angiotensin I‐converting enzyme (ACE) contains two catalytic domains (nACE and cACE) and is a key therapeutic target for hypertension and cardiovascular disease. Current ACE inhibitors (ACEi) nonselectively inhibit both domains, causing adverse effects. Selective inhibition requires an understanding of domain‐specific binding.
Kyle S. Gregory, Vinasha Ramasamy, Edward D. Sturrock, K. Ravi Acharya   +3 more
wiley   +1 more source

Measurement and analysis of moment of inertia using torsional pendulum method with air damping consideration

Jixie qiangdu
ObjectiveTo address the issue of accuracy degradation caused by aerodynamic damping when measuring the moment of inertia of irregular specimens with large airfoil surfaces using the torsional pendulum method, a compensation approach based on drag ...
MA Weiping, ZHAO He, SONG Yuzhou, LI Tenglong   +3 more
doaj   +2 more sources