• Including the remarkable IML Resi-PD microdrill for wood decay evaluation and the PICUS range for trees including the market leading PICUS 3 sonic tomography system, TreeTronic electrical resistance tomography and TreeMotion Sensor systems. (trees.org.uk)
  • In an effort to better understand the effects of long-term fungicide injection on tree health, sonic tomography (SoT) and electrical-resistance tomography (ERT) were used to nondestructively determine the incidence and severity of internal decay in the lower trunk of American elms in suburban and urban settings. (isa-arbor.com)
  • It's called "sonic tomography. (ctpublic.org)
  • Electrical resistivity tomography (ERT) or electrical resistivity imaging (ERI) is a geophysical technique for imaging sub-surface structures from electrical resistivity measurements made at the surface, or by electrodes in one or more boreholes. (wikipedia.org)
  • Electrical resistivity measurements can be used for identification and quantification of depth of groundwater, detection of clays, and measurement of groundwater conductivity. (wikipedia.org)
  • With the advancement in the field of Electrical Resistivity Tomography (ERT) from 1D to 2D and nowadays 3D, ERT has explored many fields. (wikipedia.org)
  • This resistance is then multiplied by a geometric factor that includes the spacing between each electrode to determine the apparent resistivity. (wikipedia.org)
  • However, ERT can convert a large number of resistance measurements into an image of electrical resistivity distribution associated with the plume. (scienceblog.com)
  • Hydrogeophysics represents one of the main subsurface research tools due to its easy application and efficiency in identifying the water level, with emphasis on Ground-penetrating radar (GPR), and electrical resistivity tomography (ERT). (sbgf.org.br)
  • Electrical resistivity tomography was used to identify sand and gravel layers with higher resistance. (geogold.eu)
  • Surface electrical resistivity tomography (ERT) is a widely used tool to study seawater intrusion (SWI). (copernicus.org)
  • It is closely related to the medical imaging technique electrical impedance tomography (EIT), and mathematically is the same inverse problem. (wikipedia.org)
  • Indirect approaches such as magnetic measurement, microwave, magnetic resonance, infrared tomography, dielectric constant change, and electrical resistance/impedance methods provide faster response times than direct analysis. (azosensors.com)
  • We assume that the resistance matrix can be found in electrical impedance tomography (EIT) from the assumption of linear dependence between the voltages and the currents. (gla.ac.uk)
  • With the help of the resistance matrix and the transfer impedance between the electrodes, a directional algebraic reconstruction technique (DART) is proposed for EIT. (gla.ac.uk)
  • We use the Electrical Impedance Tomography (EIT) to reconstruct the resistance change of the conductive tissue during tissue extension/deformation caused by human movement. (inria.fr)
  • Many time-lapse geophysical monitoring methods are applicable to CO2 monitoring including (4D) active seismic, microseismic, ambient seismic noise, electrical resistance tomography, InSAR, and potential field methods such as gravity. (iris.edu)
  • Vertical magnetic transfer functions (tippers) estimated at a global/continental net of geomagnetic observatories/sites can be used to image the electrical conductivity structure of the Earth's crust and upper. (springeropen.com)
  • The spatial imaging of bulk electrical conductivity allows us to explain non-monotonic salinity profiles in open boreholes (step-wise profiles really reflect the presence of freshwater at depth). (copernicus.org)
  • By comparing CHERT results with traditional in situ measurements such as electrical conductivity of water samples and bulk electrical conductivity from induction logs, we conclude that CHERT is a reliable and cost-effective imaging tool for monitoring SWI dynamics. (copernicus.org)
  • ERT, a technology developed for environmental and geologic applications at Livermore starting in the 1980s, is similar to a computed tomography scan. (scienceblog.com)
  • P-wave traveltime tomography for a seismic characterization of black shales at shallow depth on Bornholm, Denmark. (gfz-potsdam.de)
  • ERT uses vertical electrode arrays, usually in a cross-well arrangement, to perform four-electrode measurements of changes in the spatial distribution of electrical resistance within a subsurface formation. (scienceblog.com)
  • This project's aim was to validate CFD-derived flow resistances with RMM measurements of the same patients. (degruyter.com)
  • Our time-resolved wintertime measurements of carbon monoxide and respirable particles (RSP) enable exploration of peak pollution periods in a village in Jilin Province, China, characterized by household use of both coal and biomass, as well as several "improved" (gas or electric) fuels. (who.int)
  • Electrical resistance tomography (ERT) -based distributed surface sensing systems, or sensing skins, offer alternative sensing techniques for structural health monitoring, providing capabilities for distributed sensing of, for example, damage, strain and temperature. (arxiv.org)
  • The pore fluid provides the only electrical path in sands, while both the pore fluid and the surface charged particles provide electrical paths in clays. (wikipedia.org)
  • Including the Cost effective Fakopp range of Tomography systems for wood decay - Arborsonic (Sonic) and ArborElectro - electrical resistance tomography. (trees.org.uk)
  • This particular tomography was developed for use by arborists to detect decay in urban and suburban trees, mainly for safety purposes. (grist.org)
  • The geological programme continued during Q2 with the completion of further deep drill holes supplemented by directional drilling and four additional Electrical Resistance Tomography (ERT) surveys. (advfn.com)
  • The tomography images, which were generated using a modified sensitivity back projection algorithm, were employed to explore the influence of parameters in two phase flow in column flotation. (iith.ac.in)
  • The technique evolved from techniques of electrical prospecting that predate digital computers, where layers or anomalies were sought rather than images. (wikipedia.org)
  • Stereo images of wood samples before and after the fire retardant treatment were captured using micro-focus X-ray computed tomography. (ncsu.edu)
  • Anterior rhinomanometry is the current gold standard for the objective assessment of nasal breathing by determining the nasal resistance. (degruyter.com)
  • To advance current knowledge and build the proposed framework, we will combine sophisticated computational methods with state-of-the-art experimental techniques (PIV, electrical resistance tomography, laser diffraction analysis), blending technology-driven objectives with original research developments. (polito.it)
  • Based on a survey of world literature it is concluded that 1) the better -researched epidemic forest pathosystems are caused by anthropogenic factors, 2) the systems most likely have a polygenic background, and 3) resistance breeding should maintain polygenic resistance with restrictive incorporation of oligogenic resistance. (silvafennica.fi)
  • The piping process was monitored using an array of techniques, including Electrical Resistance Tomography (ERT), Distributed Temperature Sensing (DTS), over 200 piezometers and infrared cameras. (vlaanderen.be)
  • Wires connect the electrodes to a computer or an EKG machine that records the electrical activity in your heart during the stress test. (medlineplus.gov)
  • The tests were aimed to further validate the hypothesis that tidal sand has more resistance to piping than fluvial sand. (vlaanderen.be)
  • In this context it is usually called Electrical Resistance Tomography, emphasising the quantity that is measured rather than imaged. (wikipedia.org)
  • 2012. Assessing solids concentration homogeneity in Rushton-agitated slurry reactors using electrical. (uct.ac.za)
  • Time-varying electromagnetic field observed on the ground or at a spacecraft consists of contributions from (i) electric source currents, such as those in the ionosphere and magnetosphere, and (ii) correspondi. (springeropen.com)
  • In addition to sonic tomographs, Marra also did electrical resistance tomography, measuring how well electricity moves through the tree. (ctpublic.org)
  • b) The corresponding ERT results clearly identified localized increases in electrical resistance corresponding to the locations of drilled holes. (ucsd.edu)
  • b) The corresponding ERT result successfully identified localized increases in material resistance corresponding to the cuts. (ucsd.edu)
  • Teeth were evaluated by computed tomography before and after preparation at three axial cuts: 3mm, 5mm, and 7mm from the root apex. (bvsalud.org)
  • Furthermore, in order to achieve damage detection and localization, an electrical resistance tomography (ERT) was derived and implemented. (ucsd.edu)
  • Tests conducted in the laboratory showed that ERT was able to map the distribution of electrical properties of smart concrete specimens. (ucsd.edu)
  • We propose an innovative solution based on the electrical properties of a stretchable conductive tissue which is used in the manufacture of a smart garment. (inria.fr)
  • [ 5 ] is a newly recognized fungus with unique properties that enable it to spread rapidly through a healthcare institution and pass widespread resistance to the usual antifungals. (medscape.com)
  • The distribution characteristics of mean gas hold-up and flow field were studied using electrical resistance tomography (ERT) and CFD model in column flotation. (iith.ac.in)
  • This method allows assessment of the nasal resistance of both sides of the nose as function of the volume flow rate through that side of the nose. (degruyter.com)
  • His research , published in Environmental Research Letters late last year and funded by the National Science Foundation , focused on a technique to see inside trees - a kind of scan known as tomography (the "T" in CAT scan). (grist.org)
  • Using a grant from the National Science Foundation, Marra tested his tomography idea --- scanning around 70 trees in northwest Connecticut. (ctpublic.org)
  • These findings suggest that X-ray computed tomography can be potentially used to predict the chemical content of fire retardant-treated wood. (ncsu.edu)
  • In this study, measured values of nasal resistance are compared with measured values. (degruyter.com)
  • Electric Resistance Tomography (ERT) has been installed to track where a plume of injected CO_ moves underground in an oil field (Cranfield Oilfield) near Natchez, Miss. The site is part of the Southeast Regional Carbon Sequestration Partnership (SECARB), a project that eventually will store more than one million tons of CO_ in underground formations. (scienceblog.com)
  • Neural networks are being used to associate the different postures and movements measured by the reference device with the electric field measured in the smart textile. (inria.fr)
  • SECARB is a partnership involving Southern States Energy Board, regulatory agencies, geological surveys from 11 states, the Electric Power Research Institute, the Tennessee Valley Authority, southern utilities, academic institutions, a Native American enterprise and the private sector. (scienceblog.com)
  • Because the Cranfield site contains CO_, which is five times as resistive as its surroundings, ERT showed that significant resistance changes occurred during plume growth and movement. (scienceblog.com)
  • Because of the inevitable development of multidrug resistance, long-term antibiotic prophylaxis seldom is justified. (medscape.com)
  • X-ray computed tomography (CT), acoustic rhinometry] as well as test kits for olfactory and trigeminal function, there is no spatially resolved method for assessment of nasal airflow, yet. (degruyter.com)
  • 1988). Frost resistance during shoot elongation in Picea abies seedlings in relation to the growth environment of the previous growing period. (silvafennica.fi)
  • Subsequently, the total nasal resistance can be calculated from those measured unilateral resistances. (degruyter.com)
  • Prediction of Early Treatment Response to Initial Conventional Transarterial Chemoembolization Therapy for Hepatocellular Carcinoma by Machine-Learning Model Based on Computed Tomography. (cdc.gov)