نتایج جستجو برای: supra ore gradient anomaly

تعداد نتایج: 181845  

2012
VS Ajay-Chandrasekar V Kaliyaperumal D Alfred

Various anomalies of the inferior venacava (IVC) have been reported in the past. Amongst, the absence of IVC is one of the less frequently reported anomalies. The absence can be complete or partial, confined to the hepatic, supra-renal or infra-renal segment of IVC. It is still a controversy, whether these conditions are true embryonic anomalies or the result of perinatal IVC thrombosis. A man ...

Journal: :Environmental Health Perspectives 1999
A L Benin J D Sargent M Dalton S Roda

In developing countries, rapid industrialization without environmental controls has resulted in heavy metal contamination of communities. We hypothesized that residential neighborhoods located near ore industries in three northern Mexican cities would be heavily polluted with multiple contaminants (arsenic, cadmium, and lead) and that these sites would be point sources for the heavy metals. To ...

Journal: :Journal of environmental sciences 2007
Chun-bo Hao Hong-xun Zhang Zhi-hui Bai Qing Hu Bao-guo Zhang

Waste ore samples (pH 3.0) were collected at an acid mine drainage (AMD) site in Anhui, China. The present acidophilic microbial community in the waste ore was studied with 16S rRNA gene clone library and denaturing gradient gel electrophoresis (DGGE). Eighteen different clones were identified and affiliated with Actinobacteria, low G + C Gram-positives, Thermomicrobia, Acidobacteria, Proteobac...

Journal: :Minerals 2022

With the era of big data, prediction and evaluation geological mineral resources have gradually entered into a new stage from digital prospecting to intelligent prospecting. The theoretical method data mining can contribute deep resource evaluation. This paper extracts ore-causing ore-caused anomaly information based on text technology, constructs regional conceptual model data. First, we set u...

Journal: :Minerals 2023

Ore bodies generate natural electrical fields that are measurable at the ground surface. The surface signature of this field is called a self-potential anomaly. We developed sandbox experiment to monitor evolution anomaly associated with redox processes mediated by bacterial activity buried metallic object crossing water table. A Bio-Electrochemical Cell (BEC) formed metal bar connecting upper,...

Journal: :فیزیک زمین و فضا 0
کمال علمدار دانشجوی دکتری اکتشاف معدن، دانشکده مهندسی معدن، نفت و ژئوفیزیک، دانشگاه صنعتی شاهرود عبدالحمید انصاری عضو هیئت علمی، دانشکده مهندسی معدن و متالورژی، دانشگاه یزد

mapping the edges of magnetized bodies is fundamental to the application of magnetic data to geologic mapping. whether as a guide for subsequent field mapping or as a predictive mapping tool in areas of limited exposure, delineating lateral magnetization changes provides information on not only lithological changes but also on structural regimes and deformation styles and trends. adding contact...

Journal: :Minerals 2023

The East Pana intrusion is a part of the Paleoproterozoic Fedorova–Pana complex (FPC), which belongs to group Fennoscandian layered mafic–ultramafic massifs. This article discusses magmatic stratification intrusion, as well Cu-Ni and platinum-group elements (PGE) mineralization (PGE zones A, B C) in its various parts with total length more than 20 km, including Chuarvy PGE deposit. Based on who...

2014
Chan-Hee Lee Jang-Won Son Jong-Seon Park

BACKGROUND Right-sided aortic arch is a rare congenital defect usually diagnosed incidentally in adults; it is often asymptomatic unless aneurismal disease develops. In half the cases, an aberrant left subclavian artery arises from a Kommerell's diverticulum; in these cases, congenital heart anomaly is very rarely present. CASE PRESENTATION We report a case of incidentally-detected right-side...

1996
JEFF DRBOHLAV FEI-FEI JIN

A meridional-plane, hemispherical ocean model is developed to study interdecadal variability of the thermohaline circulation (THC). The model differs from previous formulations of zonally averaged ocean models by using a prognostic equation to calculate the meridional velocity. This allows the incorporation of an adjustment timescale comparable to the advective timescale of the meridional overt...

2013
Y. Liu

Geo-anomalies with complex structures in the earth’s crust may be defined as preferable hydrothermal oreforming targets. The separation and explanation of anomaly from geological background have a profound influence on the analysis of geological evolution and the ore-forming process. Usually one of the key steps to identify favorable exploration targets is to determine the threshold to separate...

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