scholarly journals QUALITATIVE AND QUANTITATIVE INTERPRETATION OF HAND-DIGITIZED AEROMAGNETIC DATA FROM IDAH

2021 ◽  
Vol 5 (10) ◽  
Author(s):  
Robert Bassey Umera ◽  
Odong Peter
Keyword(s):  
Quantitative Interpretation ◽  
Aeromagnetic Data ◽  
Basement Structure ◽  
Qualitative And Quantitative ◽  
Negative Peak ◽  
Maximum Value ◽  
Minimum Depth ◽  
Anomalous Bodies ◽  
Forward And Inverse Modeling ◽  
Peak Value

Qualitative and Quantitative interpretation of hand-digitized aeromagnetic data from Idah has been carried out by applying forward and inverse modeling technique. Qualitatively, wavelength and amplitudes of source bodies reveal lithologic contrast, basement structure and sedimentary magnetization contrast. The maximum depth to top of the magnetic source body obtained is 16.8m and minimum depth is 0.5m. The anomalous bodies’ total magnetic intensity ranges from a minimum negative peak value of -153.5nT to maximum value of 162.7nT. Susceptibility values obtained reveals the presence of rocks such as granite, diabase, olivine-diabase, basalt/gabbro, quartzite and diorite. Results obtained shows that hand-digitized data competes favorably with computer digitized data

scholarly journals Interpretation of aeromagnetic data using GIS to evaluate the geotectonic regime of the Sabinas Basin

2017 ◽  
Vol 21 (4) ◽  
pp. 175-181
Author(s):  
Jose Alberto Batista
Keyword(s):  
Magnetic Field ◽  
Information System ◽  
Mineral Deposits ◽  
Quantitative Interpretation ◽  
Aeromagnetic Data ◽  
Total Magnetic Field ◽  
Qualitative And Quantitative ◽  
Geophysical Interpretation ◽  
Geophysical Information ◽  
The Relationship

The study present the use of Geographic Information System (GIS) to assess the geotectonic regimen of the Sabinas Basin. Initially, the GIS database was designed using geological and geophysical information (total magnetic field reduced to the pole). Subsequently, 2D models of the basin were obtained along 4 profiles running on a north-south direction. The implementation of GIS enables a geological-geophysical interpretation generating various thematic maps that overlap the magnetic map during interpretation. The analysis of overlapping maps enables the identification of areas with different geotectonic regimes in the Sabinas Basin, as well as the relationship between these environments and mineralization. The qualitative and quantitative interpretation of the aeromagnetic data obtained for the total magnetic field reduced to the pole delineate uplifted basement areas as well as shallower blocks within them. This paper presents the location of both the basin´s deepest zones and its probable faults, which can be linked to the block boundaries. The faults zones and block boundaries correspond to the main mineral deposits found in the basin. Finally, the geotectonic regime of some sectors of the basin is detailed in order to reaffirm the results obtained by the interpretation of aeromagnetic data.

Research on Hydraulic Conductivity of Coarse Sandstone under Triaxial Compression

2011 ◽  
Vol 94-96 ◽  
pp. 1146-1151 ◽  
Author(s):  
Guan Rong ◽  
Xiao Jiang Wang
Keyword(s):  
Hydraulic Conductivity ◽  
Circumferential Strain ◽  
Triaxial Compression ◽  
Confining Pressure ◽  
Test Results ◽  
Stress Strain ◽  
Deformation And Failure ◽  
Maximum Value ◽  
Strain Process ◽  
Peak Value

Permeability test for complete stress-strain process of coarse sandstone were carried out in triaxial test instrument. On the basis of test results, the influence of confining pressure and strain on the hydraulic conductivity was discussed. It is shown that in the complete stress-strain process, hydraulic conductivity changes in the law that presents the same character with the curve of stress-strain. The hydraulic conductivity reduces slightly with the increase of deviatoric stress in the stage of micro fracture compressing and elastic; In the elastoplastic stage, along with the expansion of new fractures, the hydraulic conductivity increases slowly at first and then reaches sharply to the maximum value after peak point; In the post-peak stage, the fracture which controls the hydraulic conductivity of coarse sandstone is compressed because of the confining pressure and the hydraulic conductivity decreases. During the process of deformation and failure, the hydraulic conductivity is more sensitive to the change of circumferential strain. With the increase of confining pressure, the increased value from initial to peak value and the decreased value from peak to residual value decreases.

scholarly journals Plain Aviation English – Qualitative and Quantitative Interpretation

2016 ◽  
Vol 4 (1) ◽  
pp. 42
Author(s):  
Anatoliy Vitryak ◽  
Boris Slipak ◽  
Kirpitnyov Serhii
Keyword(s):  
Natural Language ◽  
Language Proficiency ◽  
Air Traffic ◽  
Quantitative Interpretation ◽  
Topical Problem ◽  
Air Traffic Controller ◽  
Qualitative And Quantitative ◽  
Language Competency ◽  
Aviation English

The article deals with the still topical problem of plain aviation English. This problem has been highlighted by ICAO in its ‘Manual on the Implementation of ICAO Language Proficiency Requirements’ (Doc 9835). According to this ‘Manual’, each pilot and air traffic controller are required to have a good ranked command of not only standardized radiotelephony phraseologies which remains dominant but also of plain English intended to be used in the cases which are not covered by the phraseologies. As far as the authors are aware, the concept of plain aviation English has remained mainly declarative so far. The article under consideration is aimed to make up qualitatively quantitatively for this lack. To master plain aviation English, along with the phraseologies, means in fact to acquire natural language competency.

Qualitative and Quantitative Interpretation: The State of the Art in Temperature Logging

2010 ◽  
Author(s):  
Rim Abdullovich Valiullin ◽  
Ayrat Ramazanov ◽  
Vyacheslav Pavlovich Pimenov ◽  
Ramil Faizyrovich Sharafutdinov ◽  
Alexandr Sadretdinov
Keyword(s):  
State Of The Art ◽  
The State ◽  
Quantitative Interpretation ◽  
Qualitative And Quantitative

Interpretation of airborne and ground magnetic and gamma-ray spectrometry data in prospecting for base metals in the central-north part of the Itabuna-Salvador-Curaçá Block, Bahia, Brazil

2013 ◽  
Vol 1 (1) ◽  
pp. T85-T100 ◽  
Author(s):  
Bruno F. Gonçalves ◽  
Edson E. S Sampaio
Keyword(s):  
Gamma Ray ◽  
Mineral Resources ◽  
Gamma Ray Spectrometry ◽  
Quantitative Interpretation ◽  
Geologic Mapping ◽  
Qualitative And Quantitative ◽  
Preliminary Identification ◽  
North Part ◽  
Ground Magnetic ◽  
Northern Segment

Interpretation of airborne and ground magnetic and radiometric geophysical data is fundamental to provide support for geologic mapping and exploration of mineral resources. This is particularly important of the Itabuna-Salvador-Curaçá Block component of the São Francisco Craton in the state of Bahia, Brazil, which bears important base metal mineralization in ultramafic intrusions. The interpreted airborne data covered part of the northern segment, and the ground data comprised an area of [Formula: see text] in the northern segment of that Archean block. The radiometric interpretation was only qualitative, and the magnetic interpretation was qualitative and quantitative. The qualitative interpretation defined distinct configurations of the geophysical signatures. So, it furnished possible regional and local geologic models and also helped to infer the distribution of magnetization and radiometric content in the rocks. The quantitative interpretation started with Werner deconvolution for a preliminary identification of the magnetic sources, and 2D magnetic modeling improved the definition of the anomalous bodies in terms of geometry, depth to the top, and magnetic susceptibility. The combined qualitative and quantitative interpretation allowed mapping of the rocks that contain magnetic and metallic minerals, as well as felsic lithology, such as granites and orthogneisses, and mafic lithology, such as gabbros and amphibolites. It also suggested that most of the northwest–southeast lineaments related to felsic and mafic magnetic intrusions. The analysis may extend to other areas of the block and be integrated with field and laboratory geologic, geophysical, and geochemical studies for an adequate exploration of nickel, copper, and chromium that are potentially present in the region.

scholarly journals Assessment of the TMJ Dysfunction Using the Computerized Facebow Analysis of Selected Parameters

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Edward Kijak ◽  
Danuta Lietz-Kijak ◽  
Bogumiła Frączak ◽  
Zbigniew Śliwiński ◽  
Jerzy Margielewicz
Keyword(s):  
Age Groups ◽  
Mouth Opening ◽  
Mean Value ◽  
Qualitative And Quantitative Analysis ◽  
Temporomandibular Joint Dysfunction ◽  
Mean Values ◽  
Qualitative And Quantitative ◽  
Maximum Value ◽  
Function Test ◽  
The Mean

The Purpose of the Paper.Qualitative and quantitative analysis of selected parameters of mandible movements, electronically registered in patients with temporomandibular joint dysfunction and healthy ones.Material. Function test of the mandible movements was conducted in 175 patients. Gender distribution was 143 women and 32 men, aged 9 to 84.Methods. The studied population, after accurate clinical examination, was divided into age groups with the range of five years. All the patients had Zebris JMA computerized facebow examination done, according to the generally accepted principles and procedures.Results.Mean values of mouth opening calculated to 45.6 mm in healthy group and 37.6 mm in TMJ dysfunction group. Mean length of condylar path amounted to39±7% of the maximum value of mouth opening in the group of healthy people,44±11% in the case of muscle-based disorders, and35±11% with joint-based. The mean value of the condylar path inclination oscillated in the range of 25° to 45°.Conclusions. The ratio of length of the condylar path to the size of mouth opening may be a significant value characterising the type and degree of intensification of the TMJ dysfunctions.

In-vitro method for assessing femoral implant—bone micromotions in resurfacing hip implants under different loading conditions

2007 ◽  
Vol 221 (8) ◽  
pp. 943-950 ◽  
Author(s):  
L Cristofolini ◽  
E Varini ◽  
M Viceconti
Keyword(s):  
Hip Replacement ◽  
Hip Implants ◽  
Motor Tasks ◽  
Preliminary Screening ◽  
Maximum Value ◽  
Gap Opening ◽  
Hip Stems ◽  
The Stability ◽  
Peak Value

Although prosthesis-bone micromotion is known to influence the stability of total hip replacement, no protocol exists to investigate resurfacing hip implants. An in-vitro protocol was developed to measure prosthesis-bone micromotions of resurfaced femurs. In order to assess the effect of all loading directions, the protocol included a variety of in-vitro loading scenarios covering the range of directions spanned by the hip resultant force in the most typical motor tasks. Gap-opening and shear-slippage micromotions were measured in the locations where they reach the maximum value. The applicability of the protocol was assessed on two commercial designs and different head sizes. Intra-specimen repeatability and inter-specimen reproducibility were excellent (comparable with the best protocols for cemented hip stems). Results showed that the protocol is accurate enough to detect prosthesis-bone micromotions of the order of a few microns. Statistically significant differences were observed in relation to the direction of the applied force. Using the whole range of hip loads enabled detection of maximum micromotions for any design (the peak value could be different for different loading directions). Application of the protocol during a test to failure indicated that the system could track micromotion up to the last instant prior to failure. The protocol proposed is thus completely validated and can be applied for preliminary screening of new epiphyseal designs.

A Computational Study of the Overload Characteristic Curves of Projectile Penetrating Concrete

2011 ◽  
Vol 462-463 ◽  
pp. 582-586
Author(s):  
Qiong Deng ◽  
Yu Long Li ◽  
Q.J. Yu ◽  
Tao Suo ◽  
P. Xue
Keyword(s):  
Layer Thickness ◽  
Computational Study ◽  
Constitutive Models ◽  
Lagrange Method ◽  
Commercial Software ◽  
Concrete Material ◽  
Concrete Plate ◽  
Maximum Value ◽  
Good Agreement ◽  
Peak Value

In the present paper, a concrete material is taken as a studying object, both the No. 16 and the JHC constitutive models in LS-DYNA commercial software are used because the parameters of both models are comparatively easy to obtain. The results show that, computational maximum value and the width of the overload curves are good agreement with experimental curves by using these two models in the Lagrange method. With increasing penetrating depth, the ramp and down slopes of the overload curves by computing is increasingly agreement with experimental curves. The JHC model is better to compute overload curves in the Lagrange method. The Lagrange method is also used to compute the penetration of multilayer concrete plate. It is found that, the peak value of acceleration goes down with increasing penetrating layers; this decreasing peak value depends on layer thickness and the strength. Acceleration value between layers will go to zero; this trend is agreement with experiments.

scholarly journals Effect of high MgO/Al2O3ratio (1.2 to 2.2) on sintering behavior and metallurgical properties

2020 ◽  
pp. 34-34
Author(s):  
J.-T. Ju ◽  
C.-M. Tang ◽  
Z.-G. Pang ◽  
X. Xing ◽  
G.-H. Ji
Keyword(s):  
Fuel Consumption ◽  
Solid Fuel ◽  
Iron Ore ◽  
Sintering Behavior ◽  
X Ray Diffraction ◽  
Characterization Methods ◽  
X Ray ◽  
Maximum Value ◽  
Energy Disperse Spectroscopy ◽  
Peak Value

The sintering pot test was used to investigate the effect of MgO/Al2O3ratio in the range of 1.2 to 2.2 on the sintering behavior of iron ore. The main characterization methods of X-ray diffraction (XRD) and scanning electron microscopy-energy disperse spectroscopy (SEM-EDS) were employed. The results showed that the strength, yield,and reducibility of sinter initially increased and then decreased with increasing MgO/Al2O3ratio from 1.2 to 2.2. Theindexwouldreachthe peak valuewiththe strength of70.6% and the yield of83.81%, respectively, when MgO/Al2O3ratio was 1.8. Thereduction indexwouldreachthe peak value of 88.54% with MgO/Al2O3ratio of 1.6. The FeOcontent, solid fuel consumption, and the RDI+3.15of sinter increased dramatically with increasing MgO/Al2O3ratio. When MgO/Al2O3ratio was up to 2.2, the solid fuel consumption and RDI+3.15reached a maximum value of 61.93 kg/t and 96.1%,respectively. The form of SFCA was acicular when MgO/Al2O3ratio was less than 1.6 and then transformed to plate-like which content also reduced. The magnetite increased while hematite decreased with enhancing MgO/Al2O3ratio.

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