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Calculation formula for apparent electrical resistivity of ...

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Calculation formula for apparent electrical resistivity of ...

No. 3 CALCULATION FORMULA FOR ELECTRICAL RESISTIVITY 295 of analysis and deduction, we take the isotropic high porosity body with well-distributed voids as

http://tech.scichina.com:8082/sciEe/fileup/PDF/99ye0294.pdf

Date added: August 31, 2013 - Views: 4

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Pseudopotential Calculation of Electrical Resistivity of ...

Pseudopotential Calculation of Electrical Resistivity of Alkali Metals P. K. SHARMA AND S. K. SRIVASTAVA P11y.vics Department, Uniuersity of Allahabad, Allallabad, h~dia

http://www.nrcresearchpress.com/doi/pdf/10.1139/p72-258

Date added: August 28, 2014 - Views: 1

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Earthing Calculation - ELECTRICAL SYSTEM

6/21/12 Earthing Calculation - Open Electrical openelectrical.org/wiki/index.php?title=Earthing_Calculation 3/12 is the resistivity of the earthing conductor (μΩ.cm)

http://electricalsystem.weebly.com/uploads/7/9/3/7/7937982/earthing_calculation_for_switchyard.pdf

Date added: May 5, 2013 - Views: 35

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Surface Resistivity and Surface Resistance Measurements

Surface Resistivity and Surface Resistance Measurements Using a Concentric Ring Probe Technique William A. Maryniak, Toshio Uehara, ... Electrical Conductivity and Resistivity. CRC Press, 1999. [4] IEC 61340-5-1 Standard. Electrostatics - part

http://www.trekinc.com/pdf/1005_Resistivity_Resistance.pdf

Date added: January 28, 2012 - Views: 21

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Electrical Resistivity of Noble Metals

Electrical Resistivity of Noble Metals Physics Department, Allahabad University, Allahabad, India Received February 20, 1973' The temperature variation of the electrical resistivity of copper, silver, and gold has been studied

http://www.nrcresearchpress.com/doi/pdf/10.1139/p73-291

Date added: August 28, 2014 - Views: 1

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An Assessment of Electrical Resistivity Soundings Data by ...

Electrical resistivity studies in geophysics may be understood in the context of current flow through a subsurface medium ... IX1D v.3 software for rapid calculation in place of manual calculation by Barnes layer method, as it is based on Barnes

http://psrcentre.org/images/extraimages/IJBEES013023.pdf

Date added: May 29, 2013 - Views: 2

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Independently peer reviewed paper

Electrical Resistivity of Silicate Glass Melts Calculation Based on the SciGlass Database Alexander Fluegel*, David A. Earl, Arun K. Varshneya New York State College of Ceramics; ... Only three advanced resistivity calculation methods

http://tsgphysics.mit.edu/pics/F%20Electric%20Currents%20and%20Resistance/F1/ElectrResist_GlassMelts_2005.pdf

Date added: August 28, 2014 - Views: 1

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An introduction to electrical resistivity in geophysics

An introduction to electrical resistivity in geophysics Rhett Hermana) Department of Chemistry and Physics and Department of Geology, Radford University, Radford,

http://www.radford.edu/~rherman/papers/ajp00943.pdf

Date added: January 28, 2012 - Views: 37

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Surface and Volume Resistivity Test for ESD and Power Cable ...

The electrical resistance (Ohm) developed between the electrodes is measured. SR is calculated, ... consideration during calculation of the volume resistivity. d Section A Figure 8: Four-Point Volume Resistivity Test Figure 7: Conditioning oven 6.

http://www.cabot-corp.com/wcm/download/en-us/sb/ESD-Test.pdf

Date added: April 25, 2012 - Views: 11

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1. Soil Resistivity Testing - ..:: Biomedical engineering ::..

2.1 APPARENT RESISTIVITY CALCULATION ... One of the main objectives of earthing electrical systems is to establish a common reference potential for the power supply system, building structure, plant steelwork, electrical conduits, cable ladders & trays

http://www.biobrain1.com/uploading2/Electrical%20Safety/Earthing%20Techniques.pdf

Date added: January 4, 2014 - Views: 1

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GROUND MEASURING TECHNIQUES: ELECTRODE RESISTANCE TO REMOTE ...

GROUND MEASURING TECHNIQUES: ELECTRODE RESISTANCE TO REMOTE EARTH & SOIL RESISTIVITY Elvis R. Sverko ERICO, Inc. Facility Electrical Protection, U.S.A.

http://www.electro-specialties.com/technical/downloads/Grounding%20Measurements.pdf

Date added: December 21, 2011 - Views: 23

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Application Note Volume and Surface Resistivity Measurements ...

Volume resistivity is defined as the electrical resistance through a cube of insulating material. When expressed in ohm-centimeters, it would be the electrical resistance through a one- ... ing calculation and displays the volume resistivity reading: K

http://www.keithley.com/data?asset=6069

Date added: October 20, 2011 - Views: 18

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Electrical resistivity/ resistance of some semiconductors

Electrical resistivity/ resistance of some semiconductors Rajendra Kumar 2 and Tanveer Ahmad Wani 1 1Department of Applied Sciences, SISTec, Gandhi Nagar, Bhopal, M.P. ... Resistivity Calculation Log e A = -0.056 α = -0.026 β = -0.145

http://scholarsresearchlibrary.com/aasr-vol5-iss1/AASR-2013-5-1-134-139.pdf

Date added: May 22, 2013 - Views: 1

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TEMPERATURE AND WATER RESISTIVITY - Kansas Geological Survey

TEMPERATURE AND WATER RESISTIVITY For shale-free formations, the conduction of electrical current is almost entirely carried by ions in the formation water.

http://www.kgs.ku.edu/PRS/Info/pdf/doveton3.PDF

Date added: December 13, 2011 - Views: 22

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IELECTRICAL RESISTIVITY, MAGNETIC SUSCEPTIBILITY, AND

Electrical Resistivity, Magnetic Susceptibility and Thermoelectric Power of PtGa2 Li-Shing Hsu, Lu-Wei Zhou,* F. L. A. Machado,t W. Gilbert Clark

http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA225035

Date added: July 2, 2013 - Views: 1

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Types of Models of Service Life of Reinforcement: The Case of ...

the calculation of aggressive ingress through models having explicit the time is made and d] ... For the time to corrosion onset, the electrical resistivity represents the porosity and its connectivity and therefore can be used to model

http://www.issres.net/journal/index.php/crl/article/download/101/48

Date added: October 18, 2013 - Views: 1

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Boundless Electrical Resistivity Tomography BERT 2 { the user ...

Boundless Electrical Resistivity Tomography BERT 2 { the user tutorial Thomas Gun ther & Carsten Ruc kery August 8, 2013 version 2.0 In this tutorial we demonstrate how to do ERT inversion using the software pack-

http://www.resistivity.net/download/bert-tutorial.pdf

Date added: March 12, 2012 - Views: 4

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Exact formulae for the electrical resistivity t By MARK ...

Exact/ormulae/or the electrical resistivity 491 by calculating the conductivity to lowest order in the scattering potential and taking the reciprocal of the conductivity.)

http://www.tandfonline.com/doi/pdf/10.1080/00018737500101451

Date added: August 28, 2014 - Views: 1

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The Effect of Soil Thermal Resistivity (RHO) on Underground ...

The Effect of Soil Thermal Resistivity (RHO) on Underground Power Cable Installations Gaylon S. Campbell, ... Inst. of Electrical and Electronics Engineers, Inc. New York. International Electrotechnical Commission (1982) Calculation of continuous current ratings of cables. Publication 287, 2nd ed.

http://www.decagon.com/assets/Uploads/The-Effect-of-Soil-Thermal-Resistivity-RHO-on-Underground-Power-Cable-Installation3.pdf

Date added: February 10, 2012 - Views: 40

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Electrical Resistance

Professor N Cheung, U.C. Berkeley EE143 S06 Lecture 3 1 Electrical Resistance where r is the electrical resistivity Resistance Wt L I V R ≡ = r (Unit: ohms)

http://www-inst.eecs.berkeley.edu/~ee243/sp10/EE143/lectures/Lec_03.pdf

Date added: March 5, 2014 - Views: 1

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X. ELECTRICAL RESISTIVITY of SOME METALLIC ELE'TS COMMERCIAL

X. ELECTRICAL RESISTIVITY of SOME METALLIC ELE'TS and COMMERCIAL ALLxlYS ... indicated on the graph sheet for calculation of resistivity is either the ... The intrinsic electrical When considering the resistivity of the metallic elements at low temperatures,

http://www.bnl.gov/magnets/Staff/Gupta/cryogenic-data-handbook/Section10.pdf

Date added: February 15, 2012 - Views: 2

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Resistance and Resistivity - Leitfähigkeitsmessgeräte und ...

Volume Resistivity ( ρ v) Volume Resistivity ( ρ v ) expresses the resistance per unit volume of a sample and is also called specific resistance.

http://www.nh-instruments.de/download/Mitsubishi_englisch.pdf

Date added: July 10, 2013 - Views: 2

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Design of Earthing System for a Substation : A Case Study

Electrical Engineering Department, National Institute of Technology, ... [email protected] Abstract This paper presents the design of earthing system for 132 KV substation and simulation for calculation of required parameters. ... Resistivity of substation

http://www.theaccents.org/ijacr/papers/conference/icett2012/42.pdf

Date added: April 21, 2013 - Views: 210

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The Fundamental Conductivity and Resistivity of Water

The Fundamental Conductivity and Resistivity of Water By Truman S. Light, Stuart Licht, Anthony C. Bevilacqua, and Kenneth R. Morash Mettler-Toledo Thornton, Inc.

http://us.mt.com/us/en/home/supportive_content/know_how/Paper-THOR-Fundamentals-Cond-Res-08-2004/jcr:content/download/file/file.res/Fundamental_Conductivity_and_Resistivity_of_Water_Oct09.pdf

Date added: December 29, 2012 - Views: 1

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Electrical resistivity sounding and tomography

1 Electrical resistivity sounding and tomography Electrical resistivity sounding has been in use since 1913 and went through major developments

http://ril-co.com/geophysics/tech_summary/02_TSS_Resistivity.pdf

Date added: August 28, 2014 - Views: 1

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The Fundamental Conductivity and Resistivity of Wa...

The Fundamental Conductivity and Resistivity of Water ... tivity measurement and calculation accuracy. The theoretical conductivity of pure water, k, ... The Electrical Conductivity of Aqueous Solutions, Carnegie Institu-tion of Washington, Washington, DC ~1907!.

http://www.snowpure.com/docs/fundamental-conductivity-and-resistivity-of-water.pdf

Date added: January 28, 2012 - Views: 13

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Apparent Water Resistivity, Porosity, and Water Temperature ...

Apparent Water Resistivity, Porosity, and Water Temperature of the Madison Limestone and Underlying Rocks in Parts Of Montana, Nebraska, North Dakota,

http://pubs.usgs.gov/pp/1273d/report.pdf

Date added: July 18, 2012 - Views: 7

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Soil Resistivity Data Computations; Single and Two - Layer ...

The calculated apparent soil resistivity will be applied in the single layer equations when determining the grid resistance. For the second method, the calculation is divided into three

http://waset.org/publications/14223/soil-resistivity-data-computations-single-and-two-layer-soil-resistivity-structure-and-its-implication-on-earthing-design

Date added: December 16, 2013 - Views: 2

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() 10. RESISTIVITY - UW-Madison Department of Physics

We now inquire as to the overall effect of electrical resistivity on plasma confinement. We will discuss confinement in more detail when we discuss MHD equilibrium states. For now, we assume that we can attain a state of quasi-force-balance

http://www.physics.wisc.edu/grads/courses/726-f07/files/Section_10_Resistivity_01.pdf

Date added: March 5, 2014 - Views: 1

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2. Electrical resistivity methods

1 2. Electrical resistivity methods The resistivity method is used in the study of horizontal and vertical discontinuities in the

http://hendragrandis.files.wordpress.com/2008/03/chapter2.pdf

Date added: December 28, 2013 - Views: 1

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Thermal conductivity and electrical resistivity of Armco iron

T ABLE 2. Smoothed values for the thermal conductivity, electrical resistivity, and Lorenz jilll ction of I3M I A nnco iron T empera· Thermal

http://nvlpubs.nist.gov/nistpubs/jres/71C/jresv71Cn4p285_A1b.pdf

Date added: May 25, 2013 - Views: 2

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Underground Power Cable Installations: Soil Thermal Resistivity

Water Content in the Field Since thermal resistivity varies so much with water content, and water content in soil is so variable, it is reasonable to ask what water

http://www.decagon.com/assets/Uploads/UndergroundPowerCableInstallationsSoilThermalResistivity.pdf

Date added: June 14, 2012 - Views: 2

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Earth Ground Resistance - Fluke Corporation

Resistance Diagnose intermittent electrical problems Avoid unnecessary downtime ... How do I measure soil resistance? To test soil resistivity, connect the ground tester as shown below. ... can be determined by calculation.

http://support.fluke.com/find-sales/Download/Asset/2633834_6115_ENG_A_W.PDF

Date added: December 28, 2011 - Views: 130

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Duct Bank Heating Calculations are Essential for Critical ...

Definitions utilized in the calculation ... RHO – Thermal resistivity. Thermal resistivity, as used in the National Electrical Code annex, ... illustrates that most electrical duct bank installations will typically not require any de

http://neher-mcgrath.com/Heating_Calculations.pdf

Date added: October 26, 2011 - Views: 73

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Lattice electrical resistivity of magnetic bcc iron from ...

Lattice electrical resistivity of magnetic bcc iron from first-principles calculations Dario Alf`e, 1,* Monica Pozzo,1 and Michael P. Desjarlais2 ... The first-principles calculation of the electrical resistivity of metals, based on the Kubo-Greenwood formula,16,17 has

http://www.homepages.ucl.ac.uk/~ucfbdxa/pubblicazioni/PhysRevB.85.024102.pdf

Date added: June 25, 2013 - Views: 1

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Tutorial : 2-D and 3-D electrical imaging surveys

Electrical resistivity surveys have been used for many decades in hydrogeological, mining and geotechnical investigations. ... The ‘Reduce effect of side blocks’ option affects the calculation of the Jacobian matrix values for the model cells located at the sides and bottom of the model section.

http://pangea.stanford.edu/research/groups/sfmf/docs/DCResistivity_Notes.pdf

Date added: December 22, 2011 - Views: 16

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THEORETIC CALCULATION OF ROCKS ELECTRICAL RESISTIVITY AND ...

1 THEORETIC CALCULATION OF ROCKS ELECTRICAL RESISTIVITY AND SOME EXAMPLES OF ALGORITHM'S APPLICATION Albert Ryjov (MSGPA, Moscow, Russia), Vladimir Shevnin (IMP, Mexico-city, Mexico)

http://geophys.geol.msu.ru/shevnin/publ/150.pdf

Date added: October 18, 2013 - Views: 1

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Contribution of a point defect to the electrical resistivity ...

electrical resistivity (residual resistivity) can be 11 9 ©2009 The Moroccan Physical and Condensed Matter Society. ... our calculation may be considered as one of the guideline for further investigations either theoretical or experimental.

http://www.fsr.ac.ma/MJCM/sup_pdf/pdf_vol11/vol11-art02.pdf

Date added: December 12, 2012 - Views: 1

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PIPELINE - Resistivity Surveys - BAC Corrosion Control Ltd

Method Statement - Resistivity Surveys Page 3 of 6 1 INTRODUCTION This Method Statement covers describes the general technique of carrying out a soil resistivity

http://www.bacgroup.com/Global/BAC/Method%20Statements/Test%20and%20Inspections/PIPELINE%20-%20Resistivity%20Surveys.pdf

Date added: June 1, 2012 - Views: 4

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Practical Volume Resistivity Measurements

Practical Volume Resistivity Measurements With Model 272A ... 257 and IEC 93 Standards for guarded-ring testing of volume resistivity of solid, homogeneous electrical insulating materials, ... (based on the general formula for calculation of

http://www.esdproducts.biz/Instrumentation/ApplicationNotes/apne-0002.pdf

Date added: July 5, 2012 - Views: 10

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SOIL RESISTIVITY SURVEY - Lyncole

Soil Resistivity Testing Lyncole XIT Grounding ... conductivity while the majority has poor electrical conductivity. The resistivity of soil varies widely throughout the world and ... The following shows the calculation in a formula.

http://www.lyncole.com/wp-content/uploads/2012/11/Lyncole_Ground_Test_Methods.pdf

Date added: August 28, 2014 - Views: 1

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Temperature Coefficient of Resistivity - personal.tcu.edu - /

Experiment 17 Temperature Coefficient of Resistivity 1. Introduction Resistance of any material varies with temperature. For temperature range that is not too

http://personal.tcu.edu/ystrzhemechn/Classes/2009/Summer/Labs/lab17.pdf

Date added: January 28, 2012 - Views: 8

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Variation of Soil Resistivity and Ground Resistance during ...

Abstract-- The scope of this paper is the investigation of the variation of the soil resistivity and the grounding system resistance during the year.

http://www.researchgate.net/profile/Antonios_Moronis/publication/232805998_Variation_of_Soil_Resistivity_and_Ground_Resistance_during_the_Year/file/9fcfd5097979a4f754.pdf

Date added: April 12, 2014 - Views: 1

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424 C2 Resistivity of rocks and minerals - University of Alberta

Geophysics 424 – January 2014 1 B : Resistivity of rocks and minerals B1 : Basic physics of electrical current flow B1.1 Simple resistor in circuit

http://www.ualberta.ca/~unsworth/UA-classes/424/notes424/424B-2014.pdf

Date added: March 5, 2014 - Views: 2

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Calculation of losses - EIHP

Calculation of losses in electric power cables as the base for cable temperature analysis I. Sarajcev1, M. Majstrovic2 & I. Medic1 1Faculty of Electrical Engineering, University of Split, Croatia ... electrical resistivity, Ωm.

http://www.eihp.hr/~mmajstro/Calculation_of_losses.pdf

Date added: November 11, 2011 - Views: 23

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Effect of High-Carbon Fly Ash on the Electrical Resistivity ...

Center for By-Products Utilization Effect of High-Carbon Fly Ash on the Electrical Resistivity of Fly Ash Concrete Containing Carbon Fibers by Tarun R. Naik

http://www4.uwm.edu/cbu/Presentations/Ancona/Ancona-ElectricalResistivity-Naik.Kumar.Ramme&Kraus.pdf

Date added: June 11, 2012 - Views: 2

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Getting Down to Earth - A Practical Guide to Earth Resistance ...

Measuring Earth Resistance for Electrical Grounding Systems ... expected change in earth resistance (due to resistivity changes) over a ... complex formulas for the calculation of the resistance to earth for any

http://www.weschler.com/_upload/sitepdfs/techref/gettingdowntoearth.pdf

Date added: December 23, 2011 - Views: 327

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Problems – Electrical Properties

Problems – Electrical Properties 1. When subjected to an applied voltage of 10 V, a current of 5 A flows through a metal wire which is 20 m long and 1 mm in diameter.

http://web.stevens.edu/e344/15_fall_2008/core/section_6/problems_section_6.pdf

Date added: March 24, 2014 - Views: 1

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RESISTIVITY SURVEY OF LIMESTONE DEPOSIT AT NKALAGU IN EBONYI ...

RESISTIVITY SURVEY OF LIMESTONE DEPOSIT AT NKALAGU IN EBONYI STATE, EASTERN NIGERIA Opeh R.N*, ... This was successfully done by employing the electrical resistivity method to ... which enables the calculation

http://www.cenresinpub.org/pub/RESISTIVITY%20SURVEY%20OF%20LIMESTONE.pdf

Date added: November 13, 2012 - Views: 4

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DETERMINATION OF EARTH RESISTIVITY PROFILE IN MULTILAYER SOIL ...

The resistivity imaging method uses standard arrays developed for electrical resistivity sounding and profiling techniques. Four electrodes are used in line at a time. ... computer based iterative calculation methods [1, 2]. However these interpretations are

http://www.elect.mrt.ac.lk/EarthResistivityProfile.pdf

Date added: October 14, 2012 - Views: 2