resistivity

The invention provides a resistivity switching metal oxide or nitride layer capable of reaching at least two stable resistivity states.

Surface resistivity: leakage across the surface, a function primarily of surface contaminants.

With increase of the ITO film surface resistivity, the infrared emissivity of the material increases first, then tends to a certain value.

Therefore, no matter how much iron oxide the fly ash contains, the concrete systematic resistivity increases as fly ash dosage increases.

Formation water resistivity is one of the key parameters used to determine formation water saturation.

When measuring the volume resistivity , the test sample is placed between two electrodes and a potential difference is applied between them.

The electrical resistivity of some metals seems to vanish altogether at temperatures a few degrees above absolute zero.

The inversion result of the resistivity is quite coincident with the burial condition of the underground ancient city wall.

Moisture will cause the surface resistivity measurements to be lower than normal.

This paper is a study of the relationship between metal glass resistivity as well as its temperature coefficient and its ingredients.

Humidity greatly affects the results of surface resistivity measurements and, to a lesser degree, volume resistivity measurements, as well.

The apparent resistivity mapping of the helicopter frequency domain EM system in magnetic area has been a problem of long controversy.

The resistivity contours appear much less diagnostic of anomalous bodies below the surface.

Methods of measurement correction Existing for cased-hole resistivity can only rely on the chart to read and corrected manually.

However, the thickness continued to increase, but the deterioration of the structure of film grain, lower resistivity.

Several factors can complicate measuring the resistivity of these materials, including problems in making good contact with the material.

The magnitude of the current depends on the resistivity near the bit, and is measured by another toroid.

This model can indicate the quantitative relationship among the resistivity, material's composition, metal percentage and porosity, etc.

Formation water resistivity is one of the key parameters for precisely determining remaining oil saturation of water flooded zone.

Full - bore Micro resistivity Scanner Imager (FMI) is one of the most advanced image logging techniques of Schlumberger.

Following the antibiotic resistivity of these microphyte enhancement, the treatment is facing a biggish challenge.

Low resistance measurement applications include contact resistance, superconductor resistance, and resistivity measurements of conductors.

The anti-electrostatic performance of packaging material depends on its electrification rate, resistivity and decay time.

An apparatus is disclosed for measuring formation resistivity through a conductive pipe in a wellbore.

The results indicate that measured SE of the system increases and the volume resistivity decreases sharply with increasing of doped PAN.

Compared with well test data, the result demonstrates that the formation water resistivity can be accurately determined by the method.

The seabed sediment resistivity is of great importance to the seabed sediment corrosivity assessment.

The resistivity sounding data can be carried out on four corners and four walls in tunnel.

In geophysical logging, the measured parameters generally include resistivity, polarizability , magnetic susceptibility etc.

copper tubes has high thermal conductivity , efficient refrigeration , high pressure resistivity , excellent mechanical property.

Application of delay technique of high-density resistivity method in geological disaster monitoring and early warning is an innovation.

The reserve is of strong heterogeneity, and the reservoir property is medium pore, medium-low permeability or low-resistivity gas reservoir.

The good psychology may enhance the immunity function, the increase resistivity, reduces the ache, promotes to be restored to health.

The other electrode is spaced 64 in. and measures the long-normal resistivity.

High temperature processing allows for increased deposition rates and decreased specific resistivity values for the deposited copper films.

High density resistivity methods are of the features of the density data acquisition, high efficiency, high accuracy and high resolution.

The resistivity of a formation measured by flowing current in a horizontal plane.

The conventional gas logging interpretation chart exists a certain difficulty in the identification of the low resistivity pay zones.

As a kind of unconventional reservoirs, oil & gas layers with low resistivity are dominated by many factors directly or not.

The forming factors which have influenced low resistivity may be summarized lithology, pore texture, fluid property and mud intrusion etc.

It acts also as an acid scavenger. Furthermore it has a good electrical resistivity.

Resistivity logging is an important way to the oil exploration. Its curves can be used to judge the oil and gas reservoirs.

The practicality of the calculation scheme is verified by taking electrical resistivity prospecting for two-layer foundation as an example.

Gripping device for measuring core resistivity which can regulate the holding force between the core and electrode is designed.

The permeability and apparent resistivity of the rock are also dependent on its physical structure and property.

Then it was analyzed by mechanics performance, electrical resistivity, thermal performance.

The flow resistivity is the main parameter to determine the sound absorption performance of MR material.

Complex resistivity phase detection is one of the development trend of complex resistivity logging technology.

Magnetometric includes magnetometric resistivity(MMR) method and magnetic induced polarization(MIP) method.

The invention allows the cathode (10) to combine appropriate transparency with a reasonably low electrical resistivity.

The long-normal resistivity has a deeper radius of investigation than the short-normal resistivity.

In addition, this paper also presents a biological bacteria resistance-reduction agent which can be used to improve the soil resistivity.

Practice proves that interpretation results of resistivity data are in good coincidence with drilling and underground workings materials.

Due to low resistivity, the eddy current generation of magnetic metallic alloys limits their applications at high frequencies.

The resistivity can be calculated by applying geometrical factors to the measured resistance.

It is shown that the resistivity of aluminum can be decreased effectively using reasonable filtration process.

the resistivity method back calculation technology analyses coal mining process Central resistivity change condition.

The results prove that high-density resistivity method used in the limestone regions has good practical results.

The high density resistivity method through electrode power supply, surveys electric current and voltage, gathers apparent resistivity data.

The resistivity and complex electromagnetic parameters of silicon carbide composite fibers containing nickel were studied.

The daily mean of the ground resistivity of Gaoyou station is processed by the method of differential energy of geoelectricity.

Special probes have been designed for making resistivity measurements on semiconductor wafers and bars.

In muddy- sandstone, the formation resistivity will be reduced owing to the existence of the exchangeablecationin effective clay .

The tensile strength, tensile elongation , surface resistivity and volume resistivity of the vul. . .

Resistivity (Electrical) - The amount of difficulty that charged carriers have in moving throughout material.

Plastics. Plasticized vinyl compounds. Determination of the volume resistivity at low voltage.

The optimization and qualification of ingots and bricks using carrier recombination and resistivity measurements.

In the less inhomogeneous situation, the response on each azimuthal has less difference with the true resistivity distribution and others.

The simulation results prove that the non-uniform bodies underground can bring on anisotropy changes in the apparent resistivity.

Zero resistivity effect and Meissner effect, the two basic properties of superconductor are demonstrated in the first part of chapter one .

Resistivity exploration is a better survey method among the lots of geothermal exploration methods.

Resistivity index increases and formation conductivity decreases as fraction of capillary bound water increases.

A fairly large fractional factorial experiment on epi growth was performed, with spatial measurements of thickness and resistivity.

The density detectors and the micro resistivity electrodes are examples of sensors that must be placed on pads.

Glass and ceramics also have high volume resistivity, but poor surface properties at high humidity and often-poor piezoelectric properties.

Increasing work pressure leads to the carrier concentration and mobility decrease, and resistivity increase.

Research results show porosity is the main factor to control the resistivity for silty soil in Yellow River estuarine area.

The apparent resistivity is only related to the distance between section and bodies.

The resistivity of pyrophosphate and annealed acid sulfate copper deposits are substantially equivalent.

The bulk resistivity of these films all increased markedly.

So this algorithm has great potential applications in the high density electrical resistivity tomography prospecting.

When used as a joint compound for furnace electrodes, it will lock the joint and lower the joint electrical resistivity.

Proposed is a new design of three-parameter combination logging tool for cable head tension, borehole temperature and mud resistivity.

Also it has been found that annealing processing affects the resistivity significantly.

When measuring materials with very high resistivity, background currents may cause measurement errors.

Selecting the opportune substrate's resistivity during the designing and manufacture of the device is very important.

Thin sand shale interbedding reduces the sensitivity of electric logging response to true formation resistivity.

A power function is introduced to deduce the occurrence probability function of resistivity anomaly.

Four-Point Probe - Test equipment used to test resistivity of wafers.

The morphology studies showed that the low resistivity resulted from the sintering of nanoparticles.

Shortening the gate and cathode is the distance between transverse resistivity decreases the effective method.

It is shown that observation accuracy of apparent resistivity could be improved greatly through up--down transmission.

The volume resistivity gradually declined and the percolation threshold was occurred with the increase of filler loading.

The influences of nano silver contents on the property of density, hardness, bending strength and resistivity were studied.

The resistivity of cement specimens under different pressures was studied. The specimens are mixed with carbon fibres.

The testing results showed that the conductive PP had low resistivity and good mechanical properties.

If there is no water in the cavity, the anomaly would appear as a closed circle with high impedance in the 2D resistivity image.

The numbers across the top show resistivity.

This article particularize the experimental results on low resistivity oil zone and high resistivity water zone.

The differential curve of apparent resistivity has a higher resolution than apparent resistivity itself.

At last, we verified that the algorithm of this paper is workable through inversing the resistivity data.

Volume resistivity: leakage of current directly through the material.

This paper mainly study on the apparent parameters inversion of resistivity imaging technology in Pit(well)-Ground.

The resistivity measured at the drill bit by a measurements-while-drilling (MWD) tool.

The effect of soil resistivity change along vertical direction on potential distribution was studied through numerical simulation.

In general, the higher resistivity material, the more vulnerable to the accumulation of static electricity.

The two-probe and four-probe methods of measuring the resistivity of cement-based materials are also compared.

The relationship between each soil layer's resistivity and thickness and earth surface potentials is analyzed.

However, with the same binder dosage, the more iron oxide the fly ash contains, the lower the systematic resistivity is.

Conclusion Show that the resistivity tomography survey method is very effective for detection of active earthquake faults in urban area.

Meanwhile, disturbed function is built by the results of undrained triaxial shear tests and electrical resistivity tests.

The flue gas conditioning system is used to reduce the flue temperature and resistivity of fly ash to improve the dust removal efficiency.

XRD photos indicate that the sputtering pressure plays an important role on the microstructure and electrical resistivity of TGZO films.

CHFR is one method for electrically measuring oil layer electric resistivity.

And in the same experiment batch, those that have higher crack resistance have a little lower electrical resistivity at their early age.

Consequently, the amount of iron oxide in fly ash has objective effect on the concrete systematic resistivity.

Two different calculation examples show that the above approach is efficacious for solving large scale 3-D resistivity inversion.

Plastics. Measurement of resistivity of conductive plastics.

A case study is finally presented for identifying fluid properties in reservoirs with low-resistivity by using saturation data.

With further exploration of oil-gas, more aim inure low-resistivity oil-gas formations attracts high attention.

In this paper, the temperature dependent resistivity of Cu and the mobility of silicon are calculated from first-principles.

High formation water salinity reduces resistivity contrast between oil layer and water layer.

The complex resistivity of patial-water saturated shaly sands has been investigated under reservoir condition.

Leading role: The repair scar injured area, lives the myo- tender skin, strengthens the flesh resistivity.

The method can also be applied to other resistivity logging tools.

and reservoir flow state changes from pseudo-Darcy seepage flow to low-velocity, high-resistivity non-Darcy flow.

The salinity of the water in the pores is probably the most critical factor determining the resistivity.

The drill pipe log records spontaneous potential and short and log resistivity measurements.

A new type of numerical mode-matching (NMM) theory is applied into numerical simulation of common resistivity logs.

The crust has two low resistivity and high-conductive, and the upper mantle has the character of normal or high resistivity together.

thus low resistivity oil layers in new wells can be correctly evaluated.

It could achieve expected surface resistivity, without an effect on the gloss and transparency of final products.

Having 40% lower resistivity than Al and good electromigration resistance, Cu is being considerably studied as candidate of Al.

however only the composite value of resistivity and thickness of anomalous body can be determined because of equivalence.

The electrical properties of, and in the resistivity, dielectric constant are control at the proper level.

The spot welding performance of aluminum alloy is poor because of its high thermal conductivity and low resistivity characteristics.

This paper introduced the reasearch situation of electrical resistivity model of composite contact materials.

Due to complicated origination of low-resistivity reservoirs and limited means, it is difficult to interpret them.

Through calculating and monitoring curb of thermal neutron fluence, target resistivity hitting ratio is high than 90%.

Both copper and aluminum can conduct electricity, but their resistivity is different.

The presence of low resistivity reservoir is greatly related to geological setting and reservoir characteristics.

Applied to low resistivity reservoirs description it can provide more realistic reserve estimation at a much lower cost for oil field.

Some new work with complex-resistivity spectra offers hope of discriminating between signals from ore minerals and nonore minerals.

At maximum stress, the electrical resistivity of cemented soil became stable and the samples were cracked.

The van der Pauw technique for measuring resistivity also employs a constant- current method.

high resistivity and low loss superconductor for a. c.

The results showed that when duty cycle was smaller, the resistivity of Cu film was bigger and the crystal size was smaller.

Borehole resistivity images are generated by sensors built into the drill bit.

Carbon slider is prone to arouse accidents for its high electrical resistivity and low strength.

The low resistivity pay zone has very complicated genesis and conductive mechanism.

Evaluation of High Resistivity Reservoir in complex Water System in FL Depression .

Most quoted depths of investigation assume a homogeneous formation with certain properties, such as a given resistivity or fluid content.

The resistivity of the fritless thick film conductor(Au, Ag, etc)is extremely low.

Coke reactivity is calculated with the method of coke resistivity measurement.

Phosphorus doped DLC films have good blood compatibility and low resistivity.

You can investigate the resistivity of dry ground and ground soaked with different liquids .

The response of electronic log mainly reflects the resistivity of formation in the bedding direction in horizonal formation.

The paper discusses resistivity sounding modeling under water using FEM.

According to the definition, investigation depths of conventional resistivity logging methods are calculated in various oil saturations .

In deviated and horizontal wells, all these logs measure some mixture of both vertical and horizontal resistivity.

However, when Ti content is more than 3mol%, the sharp increase of its resistivity made the arc erosion of cathode surface more intense.

At last, we verify the effect of proposed algorithm by applying it to the DC resistivity monitoring data.

A resistivity method with vertical line source has been used to study the distribution of injection water and surplus oil.

The resistivity of concrete using fly ash with high content of iron oxide has lower resistivity.

This article takes a project as an example, introduces the development, principle and application of the high density resistivity method.

Drilling has verified the mind-out area is high resistivity and the cave-ins are low resistivity in this location.

The types and the mechanisms of formation of low resistivity oil & gas zone in different zone of different place varies from each other.

Thus, traditionally used Al interconnection can not meet the requirement of IC design due to its high resistivity.

Superior antistatic performance, stable resistivity. It doesn't effected by using environment influence, etc.

Xu SQ, Liu WC, Li QL, et al. Application of 3D high density resistivity tomography in engineering detection of complex condition[J].

General methods of test for pigments and extenders - Part 14 : determination of resistivity of aqueous extract.

As predicted by Henkel and demonstrated in 2003 by Cornell's team, the thermal magnetism is weaker in metals of higher resistivity.

A method to evaluate quantitatively water-flooded zones by using raw resistivity inversion has been discussed.

It unusual fears the cold weather, regarding falls ill, its resistivity is not very good.

The term is similar to depth of investigation, but is more appropriate for certain azimuthally symmetric measurements, mainly resistivity.

All-time apparent resistivity is attained by vertical-magnetic field.

The relationship between the cracking time and the lowest value of electrical resistivity of concrete is nonlinear.

EM, like resistivity, can also give structural information: faults, shear or altered conductive areas.

Water is considered fresh when its low conductivity makes the interpretation of resistivity logs difficult.

Low resistivity and excellent conductivity of current and heat.

The more iron oxide the fly ash contained, the lower the systematic resistivity was.

Geng 32 Area is low porosity, permeability and resistivity reservoir with heavy heterogeneity.

monitoring resistivity changes of rocks deep underground to provide information of seismic precursor and earthquake preparation and so on.

By the application of 2D inversion, the accuracy of high density resistivity method has been greatly improved.

The phase resistivity is influenced less by shoulder and larger by invasion.

The shielding effect depends directly on the resistivity.

and insulators, and whose resistivity can sometimes be changed by light, an electric field or a magnetic field.

Electric resistivity of formation with casing pipe has been modularized.

In addition, the capacity of caltalc must be moderate to improve the strength and resistivity against creep.

By this way a kind of composite materials with self diagnose character can be made by measure the change of resistivity.

proposed the earth resistivity modeling method based on the crust and upper mantle structure and Magnetotelluric sounding data.

In this paper, we performed modelling of DC resistivity sounding in tunnel using the finite element method(FEM).

If P2 base resistivity high transverse resistivity larger, horizontal currents will have a greater horizontal compression.

The resistivity temperature curves of MgB2 wires were measured by standard four-probe method.

Use SP log in determination of flooding and how to compute resistivity of formation water in flooded zone are also described.

The realization of 3-D FEM of resistivity gives s powerful tool for studying a multi shape geologic body.

The origins of low resistivity pay zone are complex and variety.

Nitrogen doped DLC films are stable at high temperature, and have low stress and low resistivity, which is useful for semiconductor.

In addition, this paper gives an example of quantitative analysis of the annual variation of apparent resistivity.

This is the theoretical expression for the resistivity, and it is in qualitative agreement with experiment.

Many factors affect the resistivity of rock.

In order to improve the resistivity of oxidation, dysprosium cobalt ferrite magnetic fluids were prepared.

Electrical resistivity is used widely as a measure of brine saturation in rocks.

This may further limit the use of a single SMU in remote mode for certain applications, such as semiconductor resistivity.

Local lower soil resistivity caused by leachate has negative effect on detection.

In this paper, we have deeply studied 3-D resistivity inversion, providing a practical algorithm of 3-D inversion.

Causes organism to pathogenic microorganism's and so on bacterium, virus or fungus resistivity drops.

The third part is about the anisotropy analysis of apparent resistivity at seismic stations.

Based on the change of resistivity during hydration the induction period of Portland cement hydration was studied.

The more fossil in N2 marker bed, the higher apparent resistivity peaks.

In order to improve the calculation accuracy of GIC, one modeling method of earth resistivity is proposed in this paper.

The fitting should be done by using two sets of complex resistivity.

With the deepening of oil exploration, exploration and development of low resistivity reservoirs more and more extensive attention.

A problem which is often attacked by resistivity measurements is to locate the depth at which saltwater invades fresh water in aquifers .

Insulative brushes have a surface resistivity of 1012 - 1016 and are an inexpensive water resistant alternative to Anti-Static Brushes.

No sample preparation is necessary when using the Model 8009 Resistivity Chamber.

For azimuthally symmetric devices such as resistivity logs, the term radius of investigation is more appropriate.

The guard log is used when the drilling mud is conductive or there are thin beds and high-resistivity formations.

At depths of around 2000 to 2250 feet there are several peaks of high resistivity.

Method for determination of the surface resistivity of a textile fabric

On Response Functions of the Electromagnetic Propagation Resistivity Logging and Its Investigating Characteristics

Studies of Relation between the Electrical resistivity, Underground Water and Precipitation in Xinyi Seismic Station

Estimation of Remaining Life of Metallic Materials by Electrical Resistance Method Considering Variable Resistivity

The general geological background and distribution character of low resistivity oil bed in the west of Tuba basin taibei area

Study of the Ground Resistivity at Xinyi Station of Jiangsu and Its Correlation to Earthquake

As for these kinds of children, cures can not only prevent illness to come on, but also can enhance their resistivity.

Reservoir Parameter Interpretation with Conventional Electric Resistivity Logging and Its Application

On the Comparative Analysis of the Investigating Characteristics for the Array Electromagnetic Propagation Resistivity Logging Tools

Method for the determination of the resistivity of tungsten and molybdenum used in electric light sources and vacuum tubes

Feasibility study of the prediction for rock mass destabilization by applying rock mass resistivity

Optimization of DC resistivity data acquisition: real-time experimental design and a new multielectrode system

Analysis of the Precursor Anomaly of Ground Resistivity and Its Capability of Responding Earthquake in Gansu Province

Experimental study of complex resistivity of patial-water saturated shaly sands under reservoir condition

Hydropower; grounding; underwater grounding; soil resistivity; grounding resistance;

The Research of Precursor Anomaly Characteristic of Ground Resistivity Anisotropy and Its Physical Mechanism in Earthquake

Seabed Sediment Resistivity Characteristics and Its Corrosivity Assessment

Research on electrical resistivity of concrete and its application in durability appreciation of reinforced concrete

Resistivity Study of Carbon-Copper Composites Containing Adhesive Using Uniform Design Method

High Density Electrical Resistivity Tomography Technology and Its Application in Hydrogeology

Identifying low-resistivity reservoirs by means of dynamic invasion logging data

Electrical resistivity feature of saturated silty soil in Yellow River estuarine area and its engineering geology application

Experimental Study of Lithology and Nuclear Magnetic Resonance for Medium Sand Rock in Low Resistivity Reservoir

The conductivity type (defining the nature of the majority carriers) and resistivity are found at the seed, middle and tang end of the rod;

The Electrical Resistivity Anomaly Simulation of Soil Layer Contaminated with Oil Sewage and a Case Study

Recommendations for the presentation of plastics design data - Electrical properties - Surface resistivity

Primary Research of Interference on Observed Apparent Resistivity Value Due to Resistivity Variation in Surface Layer under Seismic Station

Guide for measuring earth resistivity, ground impedance, and earth surface potentials of a ground system

Model experimental study of concrete defect detection using high density resistivity method

Test methods for properties of structure ceramic used in electronic components--Test method for volume resistivity

Test method for measuring resistivity of monocrystal silicon and germanium with a collinear four-probe array