scholarly journals SEDIMENT DYNAMICS BEHAVIOR AND BEACH PROFILE TYPES BASED ON SEDIMENT PROPERTIES

2018 ◽  
pp. 76
Author(s):  
Gozo Tsujimoto ◽  
Masahiro Tamai ◽  
Yasuhide Takano ◽  
Ryuta Yamaguchi
Keyword(s):  
Dynamic Behavior ◽  
Chemical Elements ◽  
Energy Dispersive ◽  
Eof Analysis ◽  
Beach Profile ◽  
Sediment Properties ◽  
X Ray ◽  
Tottori Prefecture ◽  
Sediment Dynamic ◽  
Significant Chemical

Sand samples along the shorelines and in the rivers of Tottori Prefecture were assayed for chemical elements using energy dispersive X-ray spectrometer. Samples contained more than 60 wt. % Si, Al, Ca, Fe, Na and Mg less than 10 wt. %. It was found by EOF analysis that Si, Al, Ca and Fe were the significant chemical elements. The spatial variations of first mode of Si are related to sediment dynamic behavior. The transport regime is net accretion when the first mode value of Si is increasing, and net erosion when being decreasing.

scholarly journals Case Study On The Relationships Between Soil Contents Of Some Harmful Chemical Elements Determined By Different Equipment

2015 ◽  
Vol 1 ◽  
pp. 89
Author(s):  
Rimantė Zinkutė ◽  
Ričardas Taraškevičius
Keyword(s):  
Linear Relationship ◽  
Chemical Elements ◽  
Linear Equations ◽  
Atomic Emission ◽  
Energy Dispersive ◽  
X Ray ◽  
Edxrf Analysis

Comparison of total contents of Ba, Cr, Cu, Mn, Mo, Ni, Sn, Pb, V, Zn, Al, Ca, Fe, Mg determined in topsoil of central part of Vilnius by optical atomic emission spectrophotometry (OAES) with respective contents determined by energy-dispersive x-ray fluorescence (EDXRF), analysis of their correlation and linear relationship with and without outliers are the tasks of research. For most elements, except Ca, Sn, Ba, the contents determined by EDXRF are significantly lower and less variable. They can be predicted according to OAES-contents using linear equations. After elimination of outliers for all elements the correlation is significant at p<0.05.

scholarly journals Spanish Colonial Period Bricks from Churches in Laguna, Philippines: A Preliminary Chemical Characterisation Using X-ray Diffraction, Energy Dispersive X-ray Fluorescence and Fourier Transform Infrared

2021 ◽  
Vol 32 (2) ◽  
pp. 105-124
Author(s):  
Jan-Michael C. Cayme ◽  
Arturo F. Bermejo III ◽  
Chris Allen Earl T. Francia ◽  
Aniano N. Asor Jr ◽  
Eric T. Miranda
Keyword(s):  
Fourier Transform ◽  
Chemical Elements ◽  
Fourier Transform Infrared ◽  
The Philippines ◽  
Colonial Period ◽  
Energy Dispersive ◽  
Clay Material ◽  
X Ray Diffraction ◽  
Spanish Colonial ◽  
X Ray

Spanish Colonial Period brick samples dating to the 19th century from the Municipalities of Liliw and Pagsanjan in Laguna, Philippines was investigated. These samples were obtained from two church structures, a church bell tower from Liliw and a church convent from Pagsanjan. Combined X-ray diffraction (XRD), energy dispersive X-ray fluorescence (EDXRF) and Fourier transform infrared (FTIR) spectroscopy allowed the determination of chemical elements and minerals attributed to clay and sand, such as montmorillonite, quartz, corundum, hematite and calcite. On the basis of these compositions, the possible kilning conditions employed to fire the bricks during manufacture was also proposed. MATLAB™ programme was utilised in this study to interpret the data from XRD and FTIR to rationalise the overlapping peaks in the spectrum. Results show that both brick samples were made of clay material that is non-calcareous with low refractory. The firing was performed in an oxidising atmosphere or an open-air environment at an estimated temperature of between 650°C and 850°C. This preliminary study provides a baseline chemical characterisation data of colonial period bricks in the Philippines which will be useful for future conservation and restoration work not only locally but also within the Southeast Asian region.

Energy-dispersive X-ray analysis on thin sections and unimpregnated soil material.

1975 ◽  
Vol 23 (2) ◽  
pp. 113-125
Author(s):  
E.B.A. Bisdom ◽  
S. Henstra ◽  
A. Jongerius ◽  
F. Thiel
Keyword(s):  
Chemical Elements ◽  
Research Abstract ◽  
Energy Dispersive ◽  
Topographic Image ◽  
Thin Sections ◽  
Soil Material ◽  
Crystalline Materials ◽  
X Ray ◽  
Loose Soil

A combination of scanning electron microscopy (SEM) and energy-dispersive X-ray analysis (EDXRA) was used in the study of soil materials. The investigation in situ of components in thin sections was used to estimate chemical elements with atomic numbers 11 upwards, from sodium on. EDXRA could detect chemical elements up to magnifications of X 10 000. The composition of amorphous and micro-crystalline materials cannot be estimated in thin sections by light microscopy but by this technique was clearly displayed. Composition of loose soil material can also be investigated. The material that could be studied by SEM-EDXRA did not need high polishing of the thin section, and the plastic used for impregnation of the soil material was not affected by the investigation.Identification of chemical elements in situ, high resolution of the topographic image and relatively short testing times for the elements make this combination of techniques useful for soil research. (Abstract retrieved from CAB Abstracts by CABI’s permission)

The Application of Scanning Electron Microscopy with Energy-Dispersive X-Ray Spectroscopy (SEM-EDX) in Ancient Dental Calculus for the Reconstruction of Human Habits

2017 ◽  
Vol 23 (6) ◽  
pp. 1207-1213 ◽  
Author(s):  
Dana Fialová ◽  
Radim Skoupý ◽  
Eva Drozdová ◽  
Aleš Paták ◽  
Jakub Piňos ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Chemical Elements ◽  
Energy Dispersive ◽  
Dental Calculus ◽  
X Ray ◽  
A Charge ◽  
High Degree ◽  
The 19Th Century ◽  
Scanning Electron

AbstractThe great potential of scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX) is in detection of unusual chemical elements included in ancient human dental calculus to verify hypotheses about life and burial habits of historic populations and individuals. Elemental spectra were performed from archeological samples of three chosen individuals from different time periods. The unusual presence of magnesium, aluminum, and silicon in the first sample could confirm the hypothesis of high degree of dental abrasion caused by particles from grinding stones in flour. In the second sample, presence of copper could confirm that bronze jewelery could lie near the buried body. The elemental composition of the third sample with the presence of lead and copper confirms the origin of individual to Napoleonic Wars because the damage to his teeth could be explained by the systematic utilization of the teeth for the opening of paper cartridges (a charge with a dose of gunpowder and a bullet), which were used during the 18th and the 19th century AD. All these results contribute to the reconstruction of life (first and third individual) and burial (second individual) habits of historic populations and individuals.

Tribo-Chemistry of Particles Collected During In Situ Gasification of Texas Lignite

1997 ◽  
Author(s):  
Houshang Masudi ◽  
Richard B. Griffin
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Size Range ◽  
Chemical Elements ◽  
Energy Dispersive ◽  
Particle Size Range ◽  
X Ray ◽  
Sem Micrograph ◽  
Scanning Electron

Particles collected during in situ gasification of Texas lignite experiments were analyzed for chemical elements. Results obtained by energy dispersive x-ray analysis revealed that the dominating elements in both particles and lignite are Si, S, Al, Fe, and Ca. The concentration of these elements depends on the selected region and varies within the particle size range. Semi-quantitative analysis revealed the same results. This paper presents the scanning electron microscopy (SEM) micrograph and energy dispersive x-ray analysis (EDXA) for particles and Rockdale lignite.

Could biological tissue preservation methods change chemical elements proportion measured by energy dispersive X-ray spectroscopy?

2019 ◽  
Vol 196 (1) ◽  
pp. 168-172
Author(s):  
Luiz Carlos Maia Ladeira ◽  
Eliziária Cardoso dos Santos ◽  
Gilmar Edilberto Valente ◽  
Janaina da Silva ◽  
Talita Amorim Santos ◽  
...  
Keyword(s):  
Biological Tissue ◽  
Chemical Elements ◽  
Energy Dispersive ◽  
Tissue Preservation ◽  
X Ray ◽  
Preservation Methods

scholarly journals More than One Ever Wanted To Know About X-Ray Detectors Part 3: Who Put Promethium in My Soup?

1995 ◽  
Vol 3 (2) ◽  
pp. 3-4
Author(s):  
Mark W. Lund
Keyword(s):  
Electron Microscope ◽  
Chemical Elements ◽  
Energy Dispersive ◽  
X Ray ◽  
Counting Statistics

The combination of electron microscope and x-ray spectrometer is a very powerful tool. Not only can one see a sample in great detail, but one can determine, and even map, the chemical elements, in Part 1, I discussed some of the basics of energy dispersive x-ray spectroscopy (EDS, EDX). In Part 2,1 went into detail about the construction of the detector, and discussed counting statistics. In this installment I will discuss the interaction between the x-ray and the detecting crystal, things that can go wrong in the process, and the phenomena which can make false peaks in a spectrum.

X-ray microanalysis of air-dried conidia and conidiophores of Erysiphe graminis hordei

1980 ◽  
Vol 58 (1) ◽  
pp. 133-135
Author(s):  
Hltoshi Kunoh ◽  
Hiroshi Ishizaki
Keyword(s):  
Present Method ◽  
Chemical Elements ◽  
Erysiphe Graminis ◽  
The Other ◽  
Energy Dispersive ◽  
Specimen Preparation ◽  
Inorganic Elements ◽  
X Ray ◽  
Erysiphe Graminis Hordei ◽  
Detection Capabilities

Inorganic elements in air-dried conidia and conidiophores of Erysiphe graminis hordei were analyzed with an energy dispersive X-ray microanalyzer. Prominent peaks of Mg, Si, P, S, K, and Ca were obtained when several points on these fungal structures were analyzed. As peaks of Mg, P, S, and K had not been detected in chemically fixed specimens, these elements were considered to have been leached out during specimen preparation. Area analyses for K and P, and spot analyses for the other elements, led us to conclude that chemical elements were apparently distributed homogeneously in the conidia and conidiophores. This conclusion, however, is persuasive only within the detection capabilities of the present method.

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