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Monday, April 27, 2020 | History

1 edition of X-Ray Fluorescence Microtomography in Biological Applications found in the catalog.

X-Ray Fluorescence Microtomography in Biological Applications

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Published by INTECH Open Access Publisher .
Written in English


Edition Notes

En.

ContributionsRicardo T. Lopes, author
The Physical Object
Pagination1 online resource
ID Numbers
Open LibraryOL27026001M
ISBN 109533077239
ISBN 109789533077239
OCLC/WorldCa884065297

mechanical stress [4]. X-ray tomography has been proven as a good tool for non-destructive quality control of welds and solders joints of all types. 2. Method of X-ray microtomography measurement X-ray microtomography measurement is composed of two basic steps – acquisition of projections and volume Size: 1MB. Micro X-ray Fluorescence Spectroscopy Back. Imagine you can determine the elemental composition of a sample without preparation. No need to polish to produce a flat, homogeneous surface, or otherwise grind, dissolve or cut sample material. Irregular-shaped specimens aren’t a problem and measurement is non-destructive so the sample isn’t.   Part I deals with the applications of low energy photons and covers areas such as gas phase photodissociation reactions and dynamics, soft X-ray fluorescence, IR and photoemission analysis of surfaces, spectroscopy of organic and polymeric materials, catalysts, electronic and magnetic materials, and spectromicroscopy.


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X-Ray Fluorescence Microtomography in Biological Applications by Gabriela R. Pereira Download PDF EPUB FB2

PDF | OnGabriela R. Pereira and others published X-Ray Fluorescence Microtomography in Biological Applications | Find, read and. X-Ray Fluorescence Microtomography in Biological Applications. By Gabriela R. Pereira and Ricardo T. Lopes. Submitted: December 7th Reviewed: April 18th Published: November 21st DOI: /Cited by: 1.

Examples of microtomographic studies are overviewed to present an outline of biological applications of X-ray microtomography. In the last section, we give perspectives of X-ray microtomography in biology as the convergence of sciences in X-ray optics, biology, and structural analysis.

Microtomography in practice Cited by: microtomographic studies are overviewed to present an outline of biological applications of x-ray microtomography. In the last section, we give perspectives of x-ray microtomography in biology as the convergence of sciences in x-ray optics, biology, and structural analysis.

Microtomography in practice X-ray visualization of biological. Fully revised and expanded by 30%, X-Ray Fluorescence Spectrometry, Second Edition incorporates the latest industrial and scientific trends in all areas. It updates all previous material and adds new chapters on such topics as the history of X-ray fluorescence spectroscopy, the design of X-ray spectrometers, state-of-the-art applications, and X Cited by:   An X-ray fluorescence (XRF) spectrometer is an x-ray instrument used for routine, relatively non-destructive chemical analyses of rocks, minerals, sediments and fluids.

It works on wavelength-dispersive spectroscopic principles that are similar to an electron microprobe. However, an XRF cannot generally make analyses at the small spot sizes. X-ray fluorescence (XRF) is the emission of characteristic "secondary" (or fluorescent) X-rays from a material that has been excited by being bombarded with high-energy X-rays or gamma phenomenon is widely used for elemental analysis and chemical analysis, particularly in the investigation of metals, glass, ceramics and building materials, and for research in.

X-ray fluorescence microscopy of biological samples. Development of metallomics, defined as a field of research activities aimed at the understanding of the molecular mechanisms of metal-dependent life processes has blossomed in recent years with development of new techniques for metal detection and quantification (Mounicou et al., ).Among them are sensitive mass Cited by: Biological applications of X-ray microtomography: imaging micro-anatomy, molecular expression and organismal diversity Brian D.

Metscher, Department of Theoretical Biology, University of Vienna, Austria Introduction The basic requirements of microscopical imaging for biological specimens – contrast among tissues.

The combination of x-ray fluorescence analysis and scanning microtomography, hereafter called x-ray fluorescence microtomography, has been further developed and improved in this work.

X-ray fluorescence analysis (XRF) provides useful elemental information about specimens without causing specimen damage or requiring extra specimen preparations. In this paper, an outline of the XRF apparatus and applications of XRF to hard and soft dental and medical specimen tissues are presented, and dental materials are by: outline of biological applications of X-ray microtomography.

In the cal last section, we give perspectives of X-ray microtomography in biology et as the convergence of sciences in X-ray optics, biology, and structural and analysis. a; Microtomography in practice (X-ray visualization of biological tissue Since The X-ray fluorescence process.

A solid or a liquid sample is irradiated with high energy X-rays from a controlled X-ray tube. When an atom in the sample is struck with an X-ray of sufficient energy (greater than the atom’s K or L shell binding energy), an electron from one of the atom’s inner orbital shells is dislodged.

Computed Tomography - Special Applications. Edited by: Luca Saba. ISBNPDF ISBNPublished Cited by: 5. X-ray fluorescence microtomography (μXFCT) is a nondestructive analytical technique and has been widely used to nondestructively detect and quantify the elemental composition and distributions in samples.

Usually, synchrotron radiation X-rays are used for μXFCT, due to its high flux density. In this paper, a laboratory-source-based μXFCT system Author: Bing-Gang Feng, Fen Tao, Yi-Ming Yang, Tao Hu, Fei-Xiang Wang, Guo-Hao Du, Yan-Ling Xue, Ya-Jun Tong. Recent advances in X-ray microtomography applied to materials S.

Stock* This review highlights recent advances in X-ray microcomputed tomography (microCT) as applied to materials, specifically advances made since the first materials microCT review appeared in International Materials Reviews.1 Improvements in instrumentation are covered, and. Achieve rapid material characterization and analysis to ensure product chemistry specifications are met.

X-Ray Fluorescence (XRF) technology is the gold-standard for accurate, nondestructive elemental analysis in a wide range of applications including cement, metals, mining, petroleum, chemicals, environmental and food. Understanding the distribution of elements within plant tissues is important across a range of fields in plant science.

In this review, we examine synchrotron-based x-ray fluorescence microscopy (XFM) as an elemental imaging technique in plant sciences, considering both its historical and current uses as well as discussing emerging by: X-ray Fluorescence Microscopy: A Tool for Biology, Life Science and Nanomedicine Stefan Vogt Biological Applications –Trace metals in algae and plankton •XRF tomography • Energy of X-ray fluorescence photons is characteristic for each element.

Synchrotron x-ray fluorescence microtomography has been used to obtain virtual cross sections of elemental distributions. However, traditionally this technique requires long data acquisition times.

This has prohibited its application to highly hydrated biological samples which suffer both radiation damage and dehydration during extended by: Synchrotron x-ray fluorescence microscopy is used to quantitatively measure and image the distribution of trace elements in biological, geological and materials science specimens.

The design and performance of the x-ray fluorescence (XRF) microprobe at the NSLS are discussed and compared with other XRF microprobe by: 9.

Since we have developed X-Ray fluorescence tomography for microanalysis. All aspects were tackled starting with the reconstruction performed by FBP or ART methods.

Self-absorption corrections were added and combined with Compton, transmission and fluorescence tomographies to obtain fully quantitative by: 5. An Introduction to X-Ray Fluorescence (XRF) Analysis in Archaeology M.

Steven Shackley As I have discussed in the last chapter, our goal here is not to elucidate XRF for the entire scientific community – this has been done admirably by others – but to translate the physics, mechanics, and art of XRF for those in archaeology andFile Size: KB.

XRF Applications Overview Originally developed as a measurement device, x-ray fluorescence has grown into a non-destructive testing solution for many more applications.

Quickshot XRF analyzers offer a low-cost solution to a wide range of testing needs and some applications are detailed at this site. of people and focuses on applications where we have found the use of monochro-matic radiation to be essential.

There are many other areas of research where great strides are being made using synchrotron-based microtomography, but a full review of these applications is beyond the scope of this text. Synchrotron-Based X-Ray Tomography. X-ray fluorescence (XRF) is an analytical method that makes use of X-rays' interaction with target samples in order to determine elements present along with proportions or the overall elemental composition.

This technique is non-destructive and entirely safe. A comparison of parametric and integrative approaches for X-ray fluorescence analysis applied to a Stroke model. Journal of Synchrotron Radiation25 (6), DOI: /S Valentin V.

Lider. X-ray fluorescence by: The X-ray fluorescence emission lines of the elements occur at characteristic energies, which are listed in the so-called “orange book”, otherwise known as the X-ray data booklet. The specific X-ray fluorescence lines for K and L edges are summarized in Figure by: Chapter 2: Principles of Radiography, X-Ray Absorption, and X-Ray Fluorescence • X-ray fluorescence is a method to understand the chemical and elemental constituency of the artifacts There is a multitude of applications: Analysis of coins, or metal materials, pottery techniques, paper & paintings.

• Radiography is a method to study. Synchrotron radiation, x-ray fluorescence, diffraction, tomography. Microanalysis of Materials Using Synchrotron Radiation Keith W. Jones and Huan Feng Building 90 1 A Brookhaven National Laboratory Post Office Box Upton, New York Applications Biological applications.

A Practical Guide for the Preparation of Specimens for X-Ray Fluorescence and X-Ray Diffraction Analysis [Buhrke, Victor E., Jenkins, Ron, Smith, Deane K.] on *FREE* shipping on qualifying offers.

A Practical Guide for the Preparation of Specimens for X-Ray Fluorescence and X-Ray Diffraction Analysis5/5(2). title = "X-ray fluorescence microprobe imaging in biology and medicine", abstract = "Characteristic X-ray fluorescence is a technique that can be used to establish elemental concentrations for a large number of different chemical elements simultaneously in different locations in Cited by:   Since the s, x-ray fluorescence spectrometry (XRF), both wavelength and energy-dispersive have served as the workhorse for non-destructive and destructive analyses of archaeological materials.

Recently eclipsed by other instrumentation such as LA-ICP-MS, XRF remains the mainstay of non-destructive chemical analyses in archaeology, particularly for. 3D-morphology of minute samples by means of computerized X-ray absorption and X-ray fluorescence tomography.

The different X-ray techniques have their unique advantages. The micro-beam X-ray fluorescence set-up has an advantage of producing very well collimated primary X-ray beam (about 15 µm in diameter), in front of which the analyzed sample.

Summary X-ray Fluorescence (XRF) is a powerful quantitative and qualitative analytical tool for elemental analysis of materials. XRF is a fast, accurate, non-destructive, and usually requires only minimal sample preparation.

WDXRF is capable of measuring Beryllium (Be, Z=4) to Uranium (U, Z=92) and beyond at trace levels and up to %. EDXRF. Micro X-ray fluorescence (µXRF) is an elemental analysis technique which allows for the examination of very small sample areas.

Like conventional XRF instrumentation, Micro X-ray Fluorescence uses direct X-ray excitation to induce characteristic X-ray fluorescence emission from the sample for elemental analysis. @article{osti_, title = {High resolution IVEM tomography of biological specimens}, author = {Sedat, J W and Agard, D A}, abstractNote = {Electron tomography is a powerful tool for elucidating the three-dimensional architecture of large biological complexes and subcellular organelles.

The introduction of intermediate voltage electron microscopes further extended the. The Bruker M6 JETSTREAM is designed for the non-destructive elemental analysis of large samples. The mobility of the instrument allows it to be placed at the site of the object of interest, be it in a gallery, museum or on the shop floor.

The performance parameters enable scanning areas of mm x mm with a variable spot size down to @article{osti_, title = {Proton-induces and x-ray induced fluorescence analysis of scoliotic tissue}, author = {Panessa-Warren, B J and Kraner, H W and Jones, K W and Weiss, L S}, abstractNote = {Adolescent idiopathic scoliosis is characterized by a curvature or assymetry of the spine which may become progressively more severe, with clinical symptoms appearing just.

applications using field-portable X ray fluorescence (FPXRF). Although a significant amount of work has been undertaken in the development of FPXRF techniques, there is little consensus on the best approach for any particular application.

The most important aspect. Other articles where X-ray fluorescence is discussed: geology: Chemistry of the Earth: follows: The X-ray fluorescent (XRF) spectrometer excites atoms with a primary X-ray beam and causes secondary (or fluorescent) X-rays to be emitted.

Each element produces a diagnostic X-radiation, the intensity of which is measured. This intensity is proportional to the concentration of the .Since the s, x-ray fluorescence spectrometry (XRF), both wavelength and energy-dispersive have served as the workhorse for non-destructive and destructive analyses of archaeological materials.

Recently eclipsed by other instrumentation such as LA-ICP-MS, XRF remains the mainstay of non-destructive chemical analyses in archaeology.Synchrotron-radiation Microtomography Review by P.

Cloetens and J. Baruchel (ESRF) Microtomography is the three-dimensional (3D) reconstruction, via a numerical process, of the structure of a sample from a set of two-dimensional images, with a resolution of a few micrometres or less.