Pottery production in a limestone-poor region of the Maya lowlands: Thin section petrography and scanning electron microscopy-energy dispersive spectrometry (SEM-EDS) analysis on pottery from Uxbenká, southern Belize

2020 ◽  
Vol 32 ◽  
pp. 102371 ◽  
Author(s):  
Jillian M. Jordan ◽  
Keith M. Prufer
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Thin Section ◽  
Energy Dispersive Spectrometry ◽  
Pottery Production ◽  
Maya Lowlands ◽  
Eds Analysis ◽  
Poor Region ◽  
Thin Section Petrography ◽  
Scanning Electron

Dissolution of Precipitates in Hot Rolled Low Mn, Ti Added Pipeline Steels

2010 ◽  
Vol 638-642 ◽  
pp. 3182-3187 ◽  
Author(s):  
Ali Dehghan-Manshadi ◽  
Rian Dippenaar
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Energy Dispersive Spectrometry ◽  
Low Carbon ◽  
Eds Analysis ◽  
Transmission Electron ◽  
Before And After ◽  
Hot Rolled ◽  
Scanning Electron

The dissolution of different sulphides, carbides, carbo-sulphides and nitrides during re-heating of hot rolled low carbon, low manganese, titanium added steel have been studied using transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS) analysis. In addition, the chemical composition and size distribution of the different precipitates have been determined before and after reheating to analyze the modification of these precipitates in the course of the reheating cycle. The TEM and EDS analyses showed the presence of a wide variety of simple and/or complex precipitates in as rolled samples. The reheating of these samples to temperatures as high as 1350 °C, caused dissolution of most particles, although titanium nitride (TiN) did not dissolve even after reheating. By decreasing the reheating temperature more and more precipitates remained un-dissolved, but some spherodization occurred at higher temperatures.

scholarly journals Analytical study of Buddha sculptures in Jingyin temple of Taiyuan, China

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Xiaojian Bai ◽  
Chen Jia ◽  
Zhigen Chen ◽  
Yuxuan Gong ◽  
Huwei Cheng ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Analytical Study ◽  
Energy Dispersive Spectrometry ◽  
Analytical Techniques ◽  
X Ray Diffraction ◽  
Ancient China ◽  
X Ray ◽  
Unique Style ◽  
Scanning Electron

AbstractWith exquisite design and unique style, the painted sculptures of Tutang Buddha and two attendants Buddha in Jingyin Temple are precious cultural heritages of China. The sculpture of Tutang Buddha, which was carved from a mound and painted by ancient craftsmen, was rarely found in ancient China. However, due to natural and human factors, the sculptures were severely damaged. Obviously, they require urgent and appropriate protection and restoration. In this study, samples taken from the sculptures were analysed through multiple analytical techniques, including scanning electron microscopy with energy dispersive spectrometry (SEM–EDS), Raman spectroscopy, X-ray diffraction (XRD), optical microscopy (OM) and granulometry. The analysis results enable us to infer the techniques used by the craftsmen in making the sculptures and provide a reliable evidence for the conservation and future protection of these and similar sculptures.

Scanning Electron Microscopy Coupled with Energy Dispersive Spectrometric Analysis Reveals for the First Time Weddellite and Sylvite Crystals on the Surface of Involucral Bracts and Petals of two Xeranthemum L. (Compositae) Species

2017 ◽  
Vol 23 (3) ◽  
pp. 679-686 ◽  
Author(s):  
Milan Gavrilović ◽  
Suzana Erić ◽  
Petar D. Marin ◽  
Núria Garcia-Jacas ◽  
Alfonso Susanna ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Glandular Trichomes ◽  
Energy Dispersive ◽  
Spectrometric Analysis ◽  
Eds Analysis ◽  
Taxonomic Studies ◽  
First Time ◽  
Tetragonal Bipyramid ◽  
Scanning Electron

AbstractIn this work, weddellite and sylvite crystals are identified for the first time on the involucral bracts and petals of Xeranthemum annuum and Xeranthemum cylindraceum using scanning electron microscopy coupled with energy dispersive spectrometric (SEM-EDS) analysis. Well-developed crystals of weddellite (CaC2O4·2H2O) occur in the form of a tetragonal bipyramid (hhl), rarely in combination of a bipyramid and tetragonal prism (h00). Indumentum of involucral bracts of X. cylindraceum consists of nonglandular and glandular trichomes. Sylvite (KCl) crystals are observed only on the petal surface of X. cylindraceum. The crystals of sylvite occur in the form of perfect cubes (hexahedrons), but some crystals are deformed, i.e., partially elongated. Taxonomic significance of investigated microcharacters as well as the use of SEM-EDS analysis in taxonomic studies of plants are discussed.

Homogenization Treatment to Optimize the Microstructures of the Al-3.5Cu-1.5Li Alloy and Analysis of Al3Zr Precipitates

2018 ◽  
Vol 921 ◽  
pp. 195-201 ◽  
Author(s):  
Jin Jun Xu ◽  
Mang Jiang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Energy Dispersive Spectrometry ◽  
Single Step ◽  
Experimental Alloy ◽  
Composition Distribution ◽  
Double Step ◽  
Homogenization Treatment ◽  
Transmission Electron ◽  
Scanning Electron

The microstructure evolution and composition distribution of the cast Al-3.5Cu-1.5Li-0.11Zr alloy during single-step and double-step homogenization were studied with the help of the optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS) and transmission electron microscopy (TEM) methods. The results show that severe dendrite segregation exists in the experimental alloy. Six different homogenization treatments, conventional one-stage homogenization and double-stage homogenization are carried out, and the best homogenization treatment of the experimental alloys was achieved. Moreover, the precipitation of Al3Zr particles was significantly different after two kinds of homogenization in the experimental alloy. Compared with the single-stage homogenization, a finer particle size and distribution more diffuse of Al3Zr particles can be obtained in the double-stage homogenization treatment.

scholarly journals Scanning Electron Microscopy–Energy-Dispersive X-ray Spectrometry (SEM–EDS) Analysis of PM1–2 Microspheres Located in Coal Char Particles with Different Morphologies

2020 ◽  
Vol 34 (7) ◽  
pp. 8848-8856
Author(s):  
Elena V. Fomenko ◽  
Vladimir V. Yumashev ◽  
Sergey V. Kukhtetskiy ◽  
Anatoliy M. Zhizhaev ◽  
Alexander G. Anshits
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Coal Char ◽  
Energy Dispersive ◽  
X Ray ◽  
Eds Analysis ◽  
Scanning Electron

The Microstructure of AlSi7Mg Alloy in as Cast Condition

2015 ◽  
Vol 229 ◽  
pp. 3-10 ◽  
Author(s):  
Bartłomiej Dybowski ◽  
Bogusława Adamczyk-Cieślak ◽  
Kinga Rodak ◽  
Iwona Bednarczyk ◽  
Andrzej Kiełbus ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Chemical Composition ◽  
Energy Dispersive Spectrometry ◽  
Intermetallic Phases ◽  
Transmission Electron ◽  
Alloy Microstructure ◽  
Cast Condition ◽  
Scanning Electron

The complex microstructure of as-cast AlSi7Mg alloy has been investigated. Microstructure observations were done using light microscopy, scanning electron microscopy and transmission electron microscopy. Chemical composition of the microstructure constituents was investigated by means of energy dispersive spectrometry, conducted both during SEM and STEM investigations. Selected area diffraction was used to identify the phases in the alloy. Microstructure of the alloy in the as-cast condition consists of Al-Si eutectic and intermetallic phases in the interdendritic regions. These are: Mg2Si, α-AlFeMnS, β-AlFeSi and π-AlFeSiMg phases. What is more, number of fine precipitates were found within the α-Al dendrites. Only the occurrence of U1 (MgAl2Si2) phase has been confirmed.

Research on Diagenesis of Volcanic Reservoirs in YS2,3 Well Fields

2014 ◽  
Vol 893 ◽  
pp. 720-723
Author(s):  
Cheng Zhi Liu ◽  
Jing Yao Zhang ◽  
Yang Wan
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Volcanic Rock ◽  
Thin Section ◽  
Destructive Effect ◽  
Comprehensive Utilization ◽  
Formation And Evolution ◽  
Volcanic Reservoirs ◽  
Rock Lithology ◽  
Scanning Electron

Based on the comprehensive utilization of core, thin section identification, scanning electron microscopy and other technical means, through the YS2, 3 well fields of volcanic rock lithology and lithofacies analysis; understand that the formation and evolution of volcanic reservoirs play a constructive role and destructive effect ，which has important guiding significance[1,2].

Failure analysis of ParaPost drills that fractured in service: a retrieval analysis study

2016 ◽  
Vol 61 (5) ◽  
Author(s):  
Youssef S. Al Jabbari ◽  
Raymond Fournelle ◽  
Mirae Al Qhatani ◽  
Spiros Zinelis
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Failure Analysis ◽  
Fracture Mechanism ◽  
Testing Device ◽  
Analysis Study ◽  
Fracture Planes ◽  
Eds Analysis ◽  
Pattern Characteristic ◽  
Scanning Electron

AbstractThe aim was to determine the fracture mechanism of two clinically failed ParaPost drills. First, the fracture planes were analyzed by scanning electron microscopy (SEM). The drill end of one of the fractured pieces of each drill was then embedded in resin and after being metallographically ground and polished, was chemically etched. The microstructure and elemental composition were then examined by SEM/EDS analysis while hardness was determined with a Vickers testing device. Fractographic analysis revealed that both drills failed in a brittle manner and showed a pattern characteristic of a

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