Results 81 to 90 of about 17,983,398 (214)
Micellar and Solubilization Properties of Biological Surfactant Surfactin
Journal of Surfactants and Detergents, EarlyView.ABSTRACT We studied aqueous solutions of surfactin in the concentration range of 0.001–200 g/L using NMR diffusometry, tensometry and optical microscopy methods. According to tensometry data, the system forms monolayers of surfactant molecules at the water‐air phase boundary at C = 0.02 g/L.
Victor P. Arkhipov +3 more
wiley +1 more source
Near Surface Geophysics, EarlyView.Abstract In studies of subsurface hydrology, monitoring and imaging techniques are used to estimate the moisture content, or to track moisture or injected tracer movement. One applied imaging technique is electrical resistance tomography (ERT), in which measurements collected using electrodes placed on the ground surface or in boreholes are used to ...
Mikko Räsänen +3 more
wiley +1 more source
Near Surface Geophysics, EarlyView.Abstract This study focuses on characterising a strong and unexpected anomaly observed during an electromagnetic induction (EMI) survey conducted on the chalk cliff plateau at Sainte‐Marguerite‐sur‐Mer, in the Normandy region, France. The site was selected for a long‐term study of chalk cliff coastal erosion that began in 2017 and has been studied for ...
Sarah Thuillier +3 more
wiley +1 more source
Time-Domain Reflectometry: Novel Sensors for Process Sensing and Control
, 2004 UD-CCM has developed Time Domain Reflectometry (TDR) methods and sensors that allow high resolution distributed sensing along the entire sensor with a single ingress/egress ...
Center for Composite Materials
core
Acoustic–Visual Sensor Fusion for Robot Localization in Buried Pipes
Journal of Field Robotics, EarlyView.ABSTRACT Autonomous, untethered robots require robust localization algorithms to perform tasks such as inspection and monitoring in buried pipes. This task is challenging due to environmental constraints, such as the absence of a global positioning system underground and limited visual perception.
Rob Worley +4 more
wiley +1 more source
Velocity Temperature Characteristics of Time Domain Reflectometry Cable Length Measurement System
, 2011 Traveling wave velocity is the key to the measuring accuracy of the time-domain reflectometry cable length measurement system. The velocity value is affected by many factors.
Liang Chen, Jian Hui Song
core +1 more source
A Polar Topology Network Induces Elastic Stiffening in Ferroelectric Oxide Superlattices
Small, EarlyView.The periodicity in BiFeO3/SrTiO3 superlattices tunes the system into a dense, elastically constrained polar texture state. This topology‐rich regime reveals a collective mechanical response in which interactions among polar topological defects restrict local deformations, producing a pronounced elastic stiffening.
Mohammad Moein Seyfouri +10 more
wiley +1 more source
Water percolation estimated with time domain reflectometry (TDR) in drainage lysimeters
Revista Brasileira de Ciência do Solo, 2013 Due to the difficulty of estimating water percolation in unsaturated soils, the purpose of this study was to estimate water percolation based on time-domain reflectometry (TDR).
Alisson Jadavi Pereira da Silva +1 more
doaj +1 more source
High Voltage, EarlyView.ABSTRACT The thermal state of underground power cables can be monitored based on the temperature dependency of the dielectric permittivity of the insulation material. The resulting temperature‐dependent wave velocity is used as a thermometric property. To this end, the signal propagation time along a cable of an injected signal is determined.
Peter Wouters +2 more
wiley +1 more source
High Voltage, EarlyView.ABSTRACT The direct effects of lightning strikes on forest combustibles form the foundation for predicting lightning‐induced forest fires. Accurate assessment of lightning impact is hindered by limited knowledge of the conduction characteristics of standing larch trees.
Jinru Sun +5 more
wiley +1 more source