Download or read book X RAY MICROANALYSIS OF BIOLOGICAL SPECIMENS NEW APPROACHES PAPERS written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book X ray Microanalysis for Biologists written by Alice Warley and published by Ashgate Publishing. This book was released on 1997 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The smart way to learn how to build InfoPath forms for SharePoint - one step at a time. Design and build forms without writing code, add approval workflows to your forms, integrate data, create and use forms in the cloud.

Download or read book A Study on New Approaches in Coherent X ray Microscopy of Biological Specimens written by Klaus Giewekemeyer and published by Universitätsverlag Göttingen. This book was released on 2011 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of coherent x rays for microscopic imaging has seen a rapid and ongoing development within the past decade, driven by an increasing availability of highly brilliant and coherent sources worldwide. Accordingly, novel methods have been developed, which replace the microscope‘s objective lens by a numerical reconstruction scheme. The aim of the present work is to study how very recent experimental and algorithmic developments in the field can be implemented towards a highly sensitive and fully quantitative microscopy method for imaging of biological cells. To this end, different experimental approaches are studied, based on coherent far-field as well as near-field diffraction. At first, an application of the novel ptychographic imaging method to single biological cells is presented. In particular, it is demonstrated how weakly scattering biological specimens can be imaged with fully quantitative density contrast. Alongside, a sueccessful extension of the method towards soft x-ray energies is described.In the second part of the work it is shown how x-ray waveguides can be used as a point source for propagation-based microscopy of single cells in the hard x-ray regime. The specifically devised iterative reconstruction scheme allows for full quantitativity and high sensitivity and thus enables an application to single biological cells. The work contains a thorough introduction into the x-ray optical methods applied and aims at a useful and self-contained overview on aspects of signal and Fourier theory relevant for the used numerical propagation schemes.

Download or read book X ray Microanalysis in Biology written by David C. Sigee and published by Cambridge University Press. This book was released on 1993-04-22 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes an integrated approach to the use of X-ray microanalysis in biology.

Download or read book Basic Methods in Biological X ray Microanalysis written by Godfried M. Roomans and published by . This book was released on 1983 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book X ray Microanalysis in Electron Microscopy for Biologists written by A. John Morgan and published by Oxford University Press, USA. This book was released on 1985 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: This compact guide provides a straightforward introduction to electron microprobe x-ray analysis, a nondestructive technique that greatly facilitates the study of the chemistry of cells. Assuming no prior knowledge of electron optics, Morgan explains the principle of x-ray production and detection, describes the various methods for converting measured x-ray intensities to element concentrations in thin specimens, and directs the reader to primary sources for more definitive practical guidelines. A painless introduction to a powerful laboratory technique, this book will be a useful aid for cell biologists, biological electron microscopists, and electrolyte physiologists.

Download or read book X ray Microanalysis in Biology written by M. A. Hayat and published by . This book was released on 1980 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book X ray Microscopy written by Ping-chin Cheng and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1979, a conference on x-ray microscopy was organized by the New York Academy of Sciences, and in 1983, the Second Interna tional Symposium on X-ray Imaging was organized by the Akademie der Wissenschaften in Gottingen, Federal Republic of Germany. This volume contains the contributions to the symposium "X-ray Microscopy '86", held in Taipei, Taiwan, the Republic of China in August 1986. This is the first volume which intends to provide up-to date information on x-ray imaging to biologists, therefore, emphasis was given to specimen preparation techniques and image interpreta tion. Specimen preparation represents a major part of every microscopy work, therefore, it should be strongly emphasized in this emerging field of x-ray microscopy. Theoretically, x-ray microscopy offers the potential for the study of unfixed, hydrated biological ma terials. Since very few biological system can be directly observed without specimen preparation, we would like to emphasize that new information on biological specimens can only be obtained if the speci men is properly prepared. In the past decade, many of the published x-ray images were obtained from poorly prepared biological speci mens, mainly air-dried materials. Therefore, one of the goals of this conference is to bring the importance of specimen preparation to the attention of x-ray microscopy community. X-ray microscopy can be subdivided into several major areas. They are the classic x-ray projection microscope, x-ray contact imag ing (microradiography) and the more recent x-ray scanning micro scope, x-ray photoelectron microscope and x-ray imaging microscope.

Download or read book Scanning Electron Microscopy and X Ray Microanalysis written by Joseph Goldstein and published by Springer. This book was released on 2007-04-30 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text provides students as well as practitioners with a comprehensive introduction to the field of scanning electron microscopy (SEM) and X-ray microanalysis. The authors emphasize the practical aspects of the techniques described. Topics discussed include user-controlled functions of scanning electron microscopes and x-ray spectrometers and the use of x-rays for qualitative and quantitative analysis. Separate chapters cover SEM sample preparation methods for hard materials, polymers, and biological specimens. In addition techniques for the elimination of charging in non-conducting specimens are detailed.

Download or read book X ray Microanalysis of Biological Specimens by High Voltage Electron Microscopy written by Tetsuji Nagata and published by . This book was released on 2004 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book X ray Microanalysis in Biology and Medicine written by Arne Engström and published by . This book was released on 1962 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scanning Electron Microscopy and X Ray Microanalysis written by Joseph Goldstein and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decade, since the publication of the first edition of Scanning Electron Microscopy and X-ray Microanalysis, there has been a great expansion in the capabilities of the basic SEM and EPMA. High resolution imaging has been developed with the aid of an extensive range of field emission gun (FEG) microscopes. The magnification ranges of these instruments now overlap those of the transmission electron microscope. Low-voltage microscopy using the FEG now allows for the observation of noncoated samples. In addition, advances in the develop ment of x-ray wavelength and energy dispersive spectrometers allow for the measurement of low-energy x-rays, particularly from the light elements (B, C, N, 0). In the area of x-ray microanalysis, great advances have been made, particularly with the "phi rho z" [Ij)(pz)] technique for solid samples, and with other quantitation methods for thin films, particles, rough surfaces, and the light elements. In addition, x-ray imaging has advanced from the conventional technique of "dot mapping" to the method of quantitative compositional imaging. Beyond this, new software has allowed the development of much more meaningful displays for both imaging and quantitative analysis results and the capability for integrating the data to obtain specific information such as precipitate size, chemical analysis in designated areas or along specific directions, and local chemical inhomogeneities.

Download or read book Quantitative Electron Probe X ray Microanalysis of Biological Specimens written by Godfried M. Roomans and published by . This book was released on 1980 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scanning Electron Microscopy and X Ray Microanalysis written by Joseph Goldstein and published by Springer. This book was released on 2013-03-20 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has evolved by processes of selection and expansion from its predecessor, Practical Scanning Electron Microscopy (PSEM), published by Plenum Press in 1975. The interaction of the authors with students at the Short Course on Scanning Electron Microscopy and X-Ray Microanalysis held annually at Lehigh University has helped greatly in developing this textbook. The material has been chosen to provide a student with a general introduction to the techniques of scanning electron microscopy and x-ray microanalysis suitable for application in such fields as biology, geology, solid state physics, and materials science. Following the format of PSEM, this book gives the student a basic knowledge of (1) the user-controlled functions of the electron optics of the scanning electron microscope and electron microprobe, (2) the characteristics of electron-beam-sample inter actions, (3) image formation and interpretation, (4) x-ray spectrometry, and (5) quantitative x-ray microanalysis. Each of these topics has been updated and in most cases expanded over the material presented in PSEM in order to give the reader sufficient coverage to understand these topics and apply the information in the laboratory. Throughout the text, we have attempted to emphasize practical aspects of the techniques, describing those instru ment parameters which the microscopist can and must manipulate to obtain optimum information from the specimen. Certain areas in particular have been expanded in response to their increasing importance in the SEM field. Thus energy-dispersive x-ray spectrometry, which has undergone a tremendous surge in growth, is treated in substantial detail.

Download or read book X Ray Optics and X Ray Microanalysis written by H. H. Pattee and published by Elsevier. This book was released on 2013-10-22 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray Optics and X-ray Microanalysis covers the proceedings of the Symposium on X-ray Optics and X-ray Microanalysis, held at Stanford University on August 22-24, 1962. The book focuses on X-ray microscopy, microradiography, radiation and irradiation, and X-ray microanalysis. The selection first offers information on the methods of X-ray microscopy and X-ray absorption microanalysis. Discussions focus on X-ray scanning microscopy, contact microradiography, point projection microscopy, and total dry-weight determinations. The text then takes a look at X-ray microanalysis in biology and medicine; electron microscopic enlargements of X-ray absorption micrographs; and automation in microradiography. The publication examines the production of Fresnel zone plates for extreme ultraviolet and soft X radiation; quantitative microradiographic studies of human epidermis; and irradiation effect on total organic nerve-cell material determined by integrating X-ray absorption. The manuscript then reviews the calculation of fluorescence excited by characteristic radiation in the X-ray microanalyzer and the method for calculating the absorption correction in electron-probe microanalysis. The selection is a valuable reference for readers interested in X-ray technology.

Download or read book Electron Probe Microanalysis written by Karl Zierold and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of electron probe microanalysis of biological systems is to identify, localize, and quantify elements, mass, and water in cells and tissues. The method is based on the idea that all electrons and photons emerging from an electron beam irradiated specimen contain information on its structure and composition. In particular, energy spectroscopy of X-rays and electrons after interaction of the electron beam with the specimen is used for this purpose. However, the application of this method in biology and medicine has to overcome three specific problems: 1. The principle constituent of most cell samples is water. Since liquid water is not compatible with vacuum conditions in the electron microscope, specimens have to be prepared without disturbing the other components, in parti cular diffusible ions (elements). 2. Electron probe microanaly sis provides physical data on either dry specimens or fully hydrated, frozen specimens. This data usually has to be con verted into quantitative data meaningful to the cell biologist or physiologist. 3. Cells and tissues are not static but dynamic systems. Thus, for example, microanalysis of physiolo gical processes requires sampling techniques which are adapted to address specific biological or medical questions. During recent years, remarkable progress has been made to overcome these problems. Cryopreparation, image analysis, and electron energy loss spectroscopy are key areas which have solved some problems and offer promise for future improvements.

Download or read book Electron Microscopy written by John Kuo and published by Springer Science & Business Media. This book was released on 2008-02-05 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the newest technology in electron microscopy. It comprises two major areas of electron microscopy - transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The volume provides clear, concise instructions on processing biological specimens and includes discussion on the underlying principles of the majority of the processes presented. A notes section enables efficient adaptation and troubleshooting of protocols.