soil resistance Articles

  • Determination of the cutting resistance model of soil

    Excavation methods depend on the rock conditions, location, etc. This paper investigated the penetration of an excavator blade into soil. Finite element modelling using the ABAQUS software and analytical methods were used to predict the horizontal forces due to blade movement with varying soil parameters such as friction angle, cohesion coefficient, and angle between soil and blade. The results ...


    By Inderscience Publishers

  • Estimating Water Content of Soils from Electrical Resistivity

    Electrical resistivity has been demonstrated to be an effective predictor of various soil hydraulic properties including water content, degree of saturation, and hydraulic conductivity. Standardized laboratory procedures for measuring soil electrical resistivity are based on the use of the Miller soil box for determining soil corrosive potential from soil resistivity. However, these procedures ...


    By ASTM International

  • Sorption and resistant desorption of Atrazine in typical Chinese soils

    Atrazine is one of the most commonly used herbicides and is produced and used in large quantity worldwide. In the present study, the sorption and desorption of atrazine in five typical Chinese soils were examined. The sorption of atrazine followed the conventional linear isotherm reasonably well, indicating that sorption was driven largely by hydrophobic partitioning into soil organic matter. ...

  • Resistivity applications

    Archaeological application • Detection of buried tomb. Mineralisation exploration • Determining the size of ore deposit; • Determining the developing direction of ore deposit; • Mapping the distribution of ...

  • Case Study - Shallow Soil Resistivity Survey

    Lima, Peru Site:  Pontificia Universidad Católica del Perú, Lima, Peru Instrument and method:  SuperStingR8 WiFi with 28 electrode passive electrical imaging cable.  Measured in dipole-dipole and inverse schlumberger array.  Modeled with EarthImager 2D. Results:  Resistivity data were used to successfully estimate the ...


    By Advanced Geosciences, Inc.

  • Describing soils: Calibration tool for teaching soil rupture resistance

    Rupture resistance is a measure of the strength of a soil to withstand an applied stress or resist deformation. In soil survey, during routine soil descriptions, rupture resistance is described for each horizon or layer in the soil profile. The lower portion of the rupture resistance classes are assigned based on rupture between thumb and forefinger. The tactile sense of the pressure can vary ...

  • Electrical Resistance Heating: a Hot New Approach to Soil and Groundwater Remediation

    Electrical Resistance Heating (ERH) is an aggressive remediation technology that can quickly reduce the mass of volatile organic compounds (VOCs) in soil and groundwater by over 99%. The process is often used to clean sites where other technologies have had limited success. Larger ERH sites are cleaned within 6 to 12 months and smaller sites can be cleaned in half that time or ...


    By TRS Group, Inc.

  • MASW and resistivity sounding case study

    Anclote Natural Gas Conversion Project, Pasco County, FL  Our client was coordinating the conversion of an oil-burning power plant to natural gas. As part of the associated geotechnical study, GeoView, Inc. was tasked with determining the S-wave velocity and vertical resistivity structure at the site. For the seismic portion of the study, MASW (Multi-channel Analysis of Surface ...


    By GeoView, Inc.

  • Potential soil characteristics for riverbank filtration using 2-D ground resistivity in Kota Lama Kiri, Kuala Kangsar

    Identifying the subsurface profile for riverbank/bed filtration (RBF) using conventional methods such as drilled boreholes is usually labor intensive, costly and acquires only 1-D profiling. Hence, a 2-D ground resistivity method was used as an alternative to obtain a 2-D subsurface profile by extending to 200 m length at Kota Lama Kiri, Kuala Kangsar, Perak site area. Four resistivity survey ...


    By IWA Publishing

  • Resistance to heavy metals and bioaccumulation of lead and zinc by Chryseobacterium solincola strain 1YB-R12T isolated from soil

    A novel species of the genus Chryseobacterium which was isolated from soil, has been studied for resistance to heavy metals (lead, chromium, nickel, zinc, cadmium, copper and cobalt), antibiotic and its capacities for bioaccumulation of lead and zinc. It exhibited high minimal inhibitory concentration (MIC) values for metal ions tested ranging from 75 mg/l to 500 mg/l and antibiotic ...


    By Inderscience Publishers

  • LNAPL remediation using electrical resistance heating

    Abstract An Electrical Resistance Heating (ERH) pilot test was conducted in the fall of 1998 to determine the effectiveness of using ERH in combination with soil vapor extraction (SVE) for the remediation of benzene and light nonaqueous-phase liquids (LNAPL) at an island location on a river in the Midwest. Hydrocarbon-stained soils were discovered on an island in Ohio in May 1993 during the ...


    By TRS Group, Inc.

  • Grounding resistance measurement by grid electrode in Brunei Darussalam

    This paper presents soil resistivity and grounding resistance measurements. The measured soil resistivity is used as the input of CYME GRD software for simulation purpose. The rms error between the measured and the calculated ground resistivity is found to be 4.38%. The grounding resistances are measured by placing the electrode as single and double rectangular grids horizontally into the soil. A ...


    By Inderscience Publishers

  • Physical Modeling of Drilled Shaft Side Resistance in Sand

    Dimensional analysis of deep foundation side resistance is used to formulate the laws of similitude for drilled shaft uplift capacity. The resulting prediction equation for dimensionless side resistance then is tested against the results of static uplift load tests on model drilled shaft foundations in sand constructed at three different scales, all satisfying the same conditions of similitude. ...


    By ASTM International

  • Methods to determine dormancy and preharvest sprouting resistance in Barley

    Preharvest sprouting (PHS), defined as germination of seeds on plants before harvest, is an ever-present problem and concern for barley (Hordeum vulgare L.) growers, processors, and researchers worldwide. A major factor leading to PHS is a lack of seed dormancy, the failure of viable seeds to germinate under favorable conditions. The objectives of this research were to identify a simple, quick, ...

  • Time lapse resistivity/IP survey case study

    Changes in underground electric resistivity is typically resulted by the variations in groundwater conduction and soil water content. Monitoring this variation will help operator gain a better understanding of the underground water distribution over time.  This may facilitates operators monitor abnormal underground or structural behaviour. Time lapse resistivity survey is ...

  • Inheritance of resistance to the Soybean aphid in Soybean PI 200538

    The soybean aphid (Aphis glycines Matsumura) is a major soybean [Glycine max (L.) Merr.] insect pest. Soybean plant introduction (PI) 200538 has strong resistance to the aphid. The objectives of our research were to determine the inheritance of resistance and to map gene(s) controlling resistance in PI 200538. F2 populations developed from crosses between PI 200538 and three susceptible genotypes ...

  • CHROMIUM RESISTANCE OF DANDELION (TARAXACUM PLATYPECIDUM DIELS.) AND BERMUDAGRASS (CYNODON DACTYLON (LINN.) PERS.) IS ENHANCED BY ARBUSCULAR MYCORRHIZA IN CR(VI) CONTAMINATED SOILS

    In a greenhouse pot experiment, dandelion (Taraxacum platypecidum Diels.) and bermudagrass (Cynodon dactylon (Linn.) Pers.), inoculated with/without arbuscular mycorrhizal fungus (AMF) Rhizophagus irregularis, were grown in chromium (Cr) amended soils (0, 5, 10, 20 mg/kg Cr(VI)) to test whether AM symbiosis can improve Cr tolerance of different plant species. The experimental results indicated ...


    By John Wiley & Sons, Ltd.

  • Inheritance characteristics of brown patch resistance in tall fescue

    Brown patch disease, caused by Rhizoctonia solani Kühn, is one of the most devastating fungal pathogens that occur on tall fescue [Lolium arundinaceum (Schreb.) Darbysh. = Schedonorus arundinaceus (Schreb.) Dumort]. The development of genetic resistance to brown patch would provide the most effective long term control to this disease; however, the genetic mechanism of brown patch resistance in ...

  • Identification of novel QTL for sawfly resistance in wheat

    The wheat stem sawfly (WSS) (Cephus cinctus Nort.) is an important pest of wheat (Triticum aestivum L. em. Thell.) in the Northern Great Plains. This paper reports the genetic analysis of antixenosis for egg-laying WSS females in recombinant inbred lines (RIL) of hard red spring wheat. Female WSS preferentially choose certain wheat genotypes for egg-laying, with the cultivar Reeder being ...

  • Grounding resistance measurement using vertically driven rods near residential areas

    Soil resistivity is usually measured at the selected site either for new installation or in the existing grounding system. In this paper, soil resistivity and grounding resistance are measured at the four selected sites of the Lambak Kanan, a residential area of Brunei Darussalam. The measured soil resistivities are then compared with the resistivities calculated by CYM GRD software and the rms ...


    By Inderscience Publishers

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