Results 51 to 60 of about 3,718 (163)

Directional Underbalanced Drilling Success With Up to 40% Nitrogen Using Mud-Pulse MWD and Rotary Steerable Technology

open access: yes, 2017
This paper describes the successful use of mud-pulse Measurement While Drilling (MWD) and Rotary Steerable directional systems (RSS) in an Underbalanced Drilling (UBD) environment utilising up to 40% nitrogen.
Ken Sudron, Lee Dolman
core   +1 more source

A new acoustic telemetry tag that identifies carrier mortality by monitoring activity level

open access: yesMethods in Ecology and Evolution, Volume 17, Issue 6, Page 1735-1742, June 2026.
Abstract We present a new acoustic telemetry tag capable of detecting whether its carrier stops moving for long enough to presume the organism has died, and of reporting the time elapsed since movement ceased. The tag uses existing environmental sensor technology together with an algorithm with user‐specifiable thresholds, and importantly, can separate
Karl P. Phillips   +7 more
wiley   +1 more source

Advancements and Applications of 3D Printing Techniques and Novel Materials in Soft Robotics for Medical Devices

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Additive manufacturing, commonly referred to as three‐dimensional (3D) printing, provides the geometric freedom and multi‐material integration needed to build soft medical robots for minimally invasive interventions, prosthetics, and rehabilitation.
Yao Wang   +5 more
wiley   +1 more source

Performance of five common soil moisture sensors using default calibration equations in low‐salinity conditions

open access: yesVadose Zone Journal, Volume 25, Issue 3, May/June 2026.
Abstract Soil moisture monitoring plays a critical role in water resource management, hydrological modeling, and climate studies, making sensor accuracy and reliability increasingly important. This study evaluates the performance of five soil moisture sensors—the CS655, HydraProbe, TDR‐315N, TEROS 12, and ThetaProbe—using their default calibrations ...
Seyed Ali Azizi   +4 more
wiley   +1 more source

Eco‐Evo‐Hydraulics: Integrating Fish Evolution Into Ecohydraulics for Conservation

open access: yesWater Resources Research, Volume 62, Issue 4, April 2026.
Abstract Riverine fish conservation in eco‐hydraulics is often based on restoring or regulating river habitat to a semi‐natural state. For example, ecohydraulic projects support fish populations by increasing river connectivity through fishways, and by maintaining or restoring natural flow variance to enhance habitat quality and availability.
Xiatong Cai   +10 more
wiley   +1 more source

Vibration monitoring at drill-bit and its correlation with downhole mechanical specific energy (MSE)

open access: yesGeomechanics and Geophysics for Geo-Energy and Geo-Resources
Drill-bit vibrations are a part of rock fracturing and breaking in the drilling process, are potentially harmful to equipment, yet provide valuable insights about drilling dynamics and formation properties.
Manzoor Ahmad   +5 more
doaj   +1 more source

Rapid Seismic and Infrasound Assessment of Large Landslides: A Case Study From Denali National Park and Preserve (Alaska)

open access: yesJournal of Geophysical Research: Earth Surface, Volume 131, Issue 3, March 2026.
Abstract Large, rapid landslides are a global hazard that can occur in remote, mountainous areas. Eyewitness reports of landslides and satellite imagery can often be limited or delayed, particularly during inclement weather. However, landslide‐generated seismic and infrasound (low‐frequency atmospheric sound) waves can be remotely detected in near real‐
Liam Toney   +13 more
wiley   +1 more source

Foreign Drilling Equipment and Technology Progress

open access: yesShiyou jixie, 2016
The introductions have been given to the latest foreign drilling equipment and technologies——new type drilling rig (Aecher modular rig, modular offshore drilling rig, fast-moving rig and Ideal rig), new drill bit (two stage dual diameter PDC bit, new ...
Guo Xianmin, Hou Fang
doaj  

SuDSlab: Delivering Real‐Time Data on Sustainable Drainage Systems (SuDS)

open access: yesJournal of Flood Risk Management, Volume 19, Issue 1, March 2026.
ABSTRACT Sustainably managing water is a global issue, with rapid land use change, climate change and ageing infrastructure increasing the risk of flooding. To help mitigate against and manage urban flood risk, Sustainable Drainage Systems (SuDS), along with Low Impact Development (LID), Sponge Cities and Water Sensitive Urban Design (WSUD), have been ...
Wm. Alexander Osborne   +2 more
wiley   +1 more source

Environmental and Ecological Monitoring with Biodegradable Technologies

open access: yesAdvanced Science, Volume 13, Issue 4, 19 January 2026.
This review examines the development and application of wireless biodegradable sensors for environmental monitoring. It explores (bio)degradable materials, their degradation mechanisms in various environments, and non‐toxic fabrication techniques. Additionally, it addresses scalable production and sustainable powering solutions, emphasizing the high ...
Mohammad Javad Bathaei   +7 more
wiley   +1 more source

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