نتایج جستجو برای: apparent resistivity
تعداد نتایج: 121822 فیلتر نتایج به سال:
[1] In this study, we used porosity to assess the compaction state of the Nankai accretionary wedge sediments and any implications for stress and pore pressure. However, hydrous minerals affect porosity measurements, and accounting for them is essential toward defining the interstitial porosity truly representative of the compaction state. The water content of sediments was measured in core sam...
The COPROD2 magnetotelluric (MT) data set obtained over the North American central plains electromagnetic anomaly in the Canadian shield features a predominantly onedimensional response at periods shorter than 14 s and a predominantly two-dimensional response at longer periods (to 910 s). A subset of the COPROD2 data consisting of both strikeparallel and strike-perpendicular components of the M...
In the United States, nursing programs are commonly evaluated by their graduates success on the National Council Licensure Examination for Registered Nurses (NCLEX-RN c ©). The purpose of this paper is to describe a change in NCLEX-RN c © success rates following the addition of standardized exams throughout our program’s curriculum, and to compare these exam scores between graduates who pass NC...
Abstract The magnetotelluric method is a geophysical commonly used to map subsurface resistivity. subsurface’s true resistivity generated by inversion of the data. Inversions carried out using conventional methods such as linear and global approaches have several limitations including need for an initial model, models trapped in local minima, large number iterations long computation time. To ov...
Electrical resistivity (ER) is a main parameter in the melting processes of glasses. However, its measurement is difficult at high temperatures. In this study the electrical resistivity of different cordierite glass samples in the molten state was measured in the temperature range of 1100˚C to 1550 ˚C using the two-wire method. It was attempted to decrease the electrical resistivity of the glas...
ANDREAS BALLOT*, LOTHAR KRIENITZ, KIPLAGAT KOTUT, CLAUDIA WIEGAND, JAMES S. METCALF, GEOFFREY A. CODD AND STEPHAN PFLUGMACHER LEIBNIZ-INSTITUTE OF FRESHWATER ECOLOGY AND INLAND FISHERIES, DEPARTMENT OF LIMNOLOGY OF STRATIFIED LAKES, ALTE FISCHERHÜTTE 2, D-16775 STECHLIN, GERMANY, KENYATTA UNIVERSITY, BOTANY DEPARTMENT, PO BOX 43844, NAIROBI, KENYA, 2 LEIBNIZ-INSTITUTE OF FRESHWATER ECOLOGY AND ...
[1] Rifting of passive margins has, in some places, led to the development of extensive submerged continental platforms. Crustal thinning by a factor of two or more is at least partially accommodated by high-angle normal faults that extend through the brittle upper crust to the ductile parts of the lower crust. However, an approximately horizontal detachment zone has been postulated to explain ...
The smoothness-constrained least-squares method is widely used for two-dimensional (2D) and three-dimensional (3D) inversion of apparent resistivity data sets. The Gauss–Newton method that recalculates the Jacobian matrix of partial derivatives for all iterations is commonly used to solve the least-squares equation. The quasi-Newton method has also been used to reduce the computer time. In this...
Some problems on the resistance method in determining the hydrogen content in PdHx electrodes are discussed. First, the resistivity ratio of PdHx , the temperature coefficient of resistivity and the resistance of PdHx , and the resistance of Pd having undergone hydriding /dehydriding cycles are discussed. It is found that the resistivity ratio is somewhat higher than the resistance ratio with t...
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