Evaluation of Spectral Mapping Methods of Mineral Aggregates and Rocks along the Thrust Zones of Uttarakhand Using Hyperion Data

2018 ◽  
pp. 251-274
Author(s):  
Soumendu Shekhar Roy ◽  
Chander Kumar Singh
Keyword(s):  
Spectral Mapping ◽  
Hyperion Data ◽  
Mineral Aggregates

TEM/AEM characterization of fine-grained clay minerals in very-low-grade rocks: Evaluation of contamination by empa involving celadonite family minerals

1996 ◽  
Vol 54 ◽  
pp. 694-695
Author(s):  
Gejing Li ◽  
D. R. Peacor ◽  
D. S. Coombs ◽  
Y. Kawachi
Keyword(s):  
Electron Microscopy ◽  
Volcanic Rocks ◽  
Analytical Electron Microscopy ◽  
Metamorphic Rocks ◽  
New Mineral ◽  
Chemical Compositions ◽  
Low Grade ◽  
Fine Grained ◽  
Depth Analysis ◽  
Mineral Aggregates

Recent advances in transmission electron microscopy (TEM) and analytical electron microscopy (AEM) have led to many new insights into the structural and chemical characteristics of very finegrained, optically homogeneous mineral aggregates in sedimentary and very low-grade metamorphic rocks. Chemical compositions obtained by electron microprobe analysis (EMPA) on such materials have been shown by TEM/AEM to result from beam overlap on contaminant phases on a scale below resolution of EMPA, which in turn can lead to errors in interpretation and determination of formation conditions. Here we present an in-depth analysis of the relation between AEM and EMPA data, which leads also to the definition of new mineral phases, and demonstrate the resolution power of AEM relative to EMPA in investigations of very fine-grained mineral aggregates in sedimentary and very low-grade metamorphic rocks.Celadonite, having end-member composition KMgFe3+Si4O10(OH)2, and with minor substitution of Fe2+ for Mg and Al for Fe3+ on octahedral sites, is a fine-grained mica widespread in volcanic rocks and volcaniclastic sediments which have undergone low-temperature alteration in the oceanic crust and in burial metamorphic sequences.

QUANTIFICATION OF EFFECTS PRODUCED BY THE EXTRACTION OF MINERAL AGGREGATES TOWARDS WATER BODIES

2017 ◽  
Vol 16 (4) ◽  
pp. 897-903
Author(s):  
Paula Cojocaru ◽  
Florian Statescu ◽  
Gabriela Biali
Keyword(s):  
Water Bodies ◽  
Mineral Aggregates

Introduction of Spectral Mapping through Transmission Grating, Derivative Technique of Photon Emission

2014 ◽  
Author(s):  
Thierry Parrassin ◽  
Sylvain Dudit ◽  
Michel Vallet ◽  
Antoine Reverdy ◽  
Hervé Deslandes
Keyword(s):  
Integrated Circuits ◽  
Failure Analysis ◽  
Light Emission ◽  
Photon Emission ◽  
Optical Path ◽  
Spectral Mapping ◽  
Additional Information ◽  
Transmission Grating ◽  
Emission System ◽  
Advance Knowledge

Abstract By adding a transmission grating into the optical path of our photon emission system and after calibration, we have completed several failure analysis case studies. In some cases, additional information on the emission sites is provided, as well as understanding of the behavior of transistors that are associated to the fail site. The main application of the setup is used for finding and differentiating easily related emission spots without advance knowledge in light emission mechanisms in integrated circuits.

scholarly journals Functionalization of Crumb Rubber Surface for the Incorporation into Asphalt Layers of Reduced Stiffness: An Overview of Existing Treatment Approaches

Recycling ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 19
Author(s):  
Christina Makoundou ◽  
Kenth Johansson ◽  
Viveca Wallqvist ◽  
Cesare Sangiorgi
Keyword(s):  
Gamma Ray ◽  
Crumb Rubber ◽  
Contaminant Removal ◽  
Surface Adhesion ◽  
Asphalt Mixes ◽  
Plastic Recycling ◽  
Physical Treatments ◽  
Uv Ozone ◽  
Reactive Properties ◽  
Mineral Aggregates

The substitution of mineral aggregates with crumb rubber (CR) from waste end-of-life tires (ELTs) in the asphalt concretes, has been considered a sustainable paving industry approach. The rubber has been used to construct pavements with proven enhanced resilience and improved durability. However, some issues related to the rubber’s surface adhesion or swelling may arise with these practices and generate complications (binder consumption, temperatures, mixing times). One possible solution to overcome the materials’ compatibility problems is to pre-treat the CR’s surface before its incorporation into the asphalt mixes to allow a surface functionalization that can enhance coverage and cohesion inside the mixes. The physical treatments using radiations-based beam are already exploited in the plastic recycling industries avoiding the use of chemicals in considerable amounts. Such treatments permit the recovering of large quantities of polymer-based materials and the enhancement of interfacial properties. This article provides an overview of existing surface treatments of polymers and especially rubber, including gamma ray, UV-ozone, microwaves, and plasma. Several studies have shown an overall improvement of the rubber surface’s reactive properties due to contaminant removal or roughness enhancement attributed to cross-linking or scission reactions occurring on the rubber’s surface layer. With those properties, the asphalt mixes’ phase stability properties are increased when the pre-treated rubber is incorporated. The treatments would permit to increase the CR quantities, yet reduce the layer stiffness, and improve the durability and the sustainability of future advanced road pavements.

Exploiting IKONOS and Hyperion data fusion for automated road extraction

2010 ◽  
Vol 25 (2) ◽  
pp. 123-131 ◽  
Author(s):  
Poonam S. Tiwari ◽  
Hina Pande ◽  
Mya Nan Aye
Keyword(s):  
Data Fusion ◽  
Road Extraction ◽  
Hyperion Data
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