Download or read book The Autoradiography of Plant Material written by Alden Springer Crafts and published by . This book was released on 1964 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Autoradiography of Plant Materials 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 The Autoradiography of Plant Materials written by California Agricultural Experiment Station and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Autoradiography of Plant Materials by Alden S Crafts and Shogo Yamaguchi written by Alden Springer Crafts and published by . This book was released on 1964 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microautoradiography and Electron Probe Analysis written by U. Lüttge and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: In biological literature, several definitions of quantitative autoradio graphy are given. The term is defined as either the determination and com parison of the density of silver grains above various structures or under varying conditions, or the determination of absolute quantities of radio activity. In both these cases, photometric measurement serves for more rapid and more exact evaluation of grain densities than would be possible by visual counting of the grains. The equipment generally used for the photometric measurement of silver grains consists of a microscope, a photocell, an electronic amplifier system and a display unit. Grains can be made accessible to photometric evaluation by various kinds of microscopic illumination: 1. Substage bright-field illumination. 2. Substage dark-field illumination. 3. Incident dark-field illumination. 4. Vertical bright-field illumination. With all these types of illumination, the relationship between the luminous flux I absorbed by the film, scattered into the objective and reflected or diffracted, and the flux 10 which is not affected by the film is used as a measure of grain density. Since these are differential measurements, the light beam I transmitted by the film is in itself a measure of grain density if the luminous flux 10 incident on the grains is kept constant. This approach has been used in a large number of measuring setups.
Download or read book An Evaluation of Several Methods of Processing Plants for Autoradiography written by Robert W. Gesink and published by . This book was released on 1971 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of the possible errors in interpretation as a result of the occurrence of pseudoimages formed by improper preparation of plant material for autoradiography, three drying methods were compared: freeze-drying, oven-drying, and air-drying. Freeze-drying was the best method for preparing plants for autoradiography, oven-drying the least effective method. Pseudoimages were consistently produced by oven-drying, especially in bean plants; these false images were particularly characterized by peripheral movement of the label in the treated leaves. Sectioning did not prevent this movement. Air-drying was ranked second as an effective technique. Pseudo-images produced by air-dried plants appeared to be relatively minor compared with those of oven-dried plants. The apparent presence of the label in the roots appeared to be the principal anomaly in air-dried bean plants. Freeze-drying was not as essential for the woody plants as for the bean plants. Air-dried ash produced excellent autoradiographs similar to those of freeze-dried ash. However, metabolic degradation of the labeled compound may occur during air-drying, resulting in probable loss of the one-for-one relationship between the compound under study and the radioactive tracer. (Author).
Download or read book Agricultural Implications of the Fukushima Nuclear Accident III written by Tomoko M. Nakanishi and published by Springer. This book was released on 2019-01-30 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book presents the findings from on-site research into radioactive cesium contamination in various agricultural systems affected by the Fukushima Daiichi Nuclear Power Plant accident in March 2011. This third volume in the series reports on studies undertaken at contaminated sites such as farmland, forests, and marine and freshwater environments, with a particular focus on livestock, wild plants and mushrooms, crops, and marine products in those environments. It also provides additional data collected in the subsequent years to show how the radioactivity levels in agricultural products and their growing environments have changed with time and the route by which radioactive materials entered agricultural products as well as their movement between different components (e.g., soil, water, and trees) within an environmental system (e.g., forests). The book covers various topics, including radioactivity testing of food products; decontamination trials for rice and livestock production; the state of contamination in, trees, mushrooms, and timber; the dynamics of radioactivity distribution in paddy fields and upland forests; damage incurred by the forestry and fishery industries; and the change in consumers’ attitudes. Chapter 19 introduces a real-time radioisotope imaging system, a pioneering technique to visualize the movement of cesium in soil and in plants. This is the only book to provide systematic data on the actual change of radioactivity, and as such is of great value to all researchers who wish to understand the effect of radioactive fallout on agriculture. In addition, it helps the general public to better understand the issues of radio-contamination in the environment. The project is ongoing; the research groups from the Graduate School of Agricultural and Life Sciences of The University of Tokyo continue their work in the field to further evaluate the long-term effects of the Fukushima accident.
Download or read book Autoradiography in Biology and Medicine written by George Addison Boyd and published by . This book was released on 1955 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Manipulations with Plant Material written by Lucien Ledoux and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mankind, throughout history, has strived to improve his food sources. By means of slow and empirical selections, it has been possible to greatly increase both quantity and quality of plant crops. This procedure has brought the most useful cereals to a state of refinement that seems to be difficult to further improve by the same methodology. Indeed, natural sexual mechanisms were always used to cross closely related sexually and genetically compatible organisms; the selection procedure consisted of isolating the most promi sing progenies. Obviously, by this way, plants could only share preexisting genetic pools. On the other hand, the last decade has seen drastic modifi cations of the experimental plant sciences, with the appearance of new technological possibilities. Because of this profound reshaping of our experimental ap proaches, other means can now be realistically envisaged in order to achieve similar or even higher goals. It is, for instance, possible to attempt completing sexual crosses (where both male and female gametes bring together the genetic informations necessary for growth and development of the offspring) by parasexual means by which novel genetic informa tions could possibly be added to the heritage •. At the limit, such genetic manipulations could enable man to create plants capable of producing new substances characteris tic of unrelated plants or, more generally, of other living or ganisms. Even if these possibilities might appear quite remote, the interest of Scientists has been awaken and, indeed, several at tempts to such genetic manipulations have already been made.
Download or read book Introduction to Nuclear Techniques in Agronomy and Plant Biology written by Peter B. Vose and published by Elsevier. This book was released on 2013-10-22 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Nuclear Techniques in Agronomy and Plant Biology is a 15-chapter book that begins with an explanation of the nature of isotopes and radiation, nuclear reactions, and radioisotopes. Subsequent chapters describe the radioassay, use of stable isotopes as tracers, and activation analysis for biological samples. Other chapters discuss X-ray fluorescence spectrography for plants and soils; autoradiography; isotopes in soils studies; isotopic tracers in field experimentation; and nuclear techniques in plant science and soil water. The last chapter centers on the radiation and other induced mutations in plant breeding.
Download or read book Techniques of Autoradiography written by Andrew W. Rogers and published by Elsevier-North-Holland Biomedical Press. This book was released on 1979 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Textbook of Plant Physiology Biochemistry and Biotechnology written by SK Verma | Mohit Verma and published by S. Chand Publishing. This book was released on 2008-03 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: For Degree and Post Graduate Students.
Download or read book Autoradiography for Biologists written by P Gahan and published by Elsevier. This book was released on 2012-12-02 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: Autoradiography for Biologists discusses the basic and practical aspects of various autoradiography techniques. It is composed of six chapters; each chapter covers a specific form of autoradiography technique. Chapter 1 discusses various theoretical aspects of autoradiography, such as radioactive decay, beta-particle absorption, photographic process, sensitivity, and resolving power. Chapters 2 to 6 discuss basic aspects of several forms of autoradiography, including macro-, stripping film, diffusible substances, liquid emulsion, and high resolution autoradiography. Practical and theoretical details of the technique, together with modifications made, are covered in each chapter. This book will be both an encouragement and a help to people wanting to apply autoradiography to the solution of biological problems.
Download or read book Methods in Plant Electron Microscopy and Cytochemistry written by William V. Dashek and published by Springer Science & Business Media. This book was released on 2000-06-29 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hands-on experimentalists describe the cutting-edge microscopical methods needed for the effective study of plant cell biology today. These powerful techniques, all described in great detail to ensure successful experimental results, range from light microscope cytochemistry, autoradiography, and immunocytochemistry, to recent developments in fluorescence, confocal, and dark-field microscopies. Important advances in both conventional and scanning electron microscopies are also fully developed, together with such state-of-the-art ancillary techniques as high-resolution autoradiography, immunoelectron microscopy, X-ray microanalysis, and electron systems imaging. Easy-to-use and up-to-date, Methods in Plant Electron Microscopy and Cytochemistry offers today's plant scientists a first class collection of readily reproducible light and electron microscopical methods that will prove the new standard for all working in the field.
Download or read book Autoradiography in Biology and Medicine written by George A. Boyd and published by Academic Press. This book was released on 2013-10-22 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Autoradiography in Biology and Medicine focuses on the applications of autoradiography in medicine and biology, including photographic processes, emulsions, and response of films to isotopes and x-rays. The book first offers information on the meaning of autoradiography, including the etymology of autoradiography, photographic emulsion as a scientific instrument, and the relationship of biologists and autoradiography. The publication then examines the photographic process and comparative response of commercial and scientific emulsions. Discussions focus on fixation, washing, emulsion, response of films to electrons, x-rays, and gamma rays, and response of films to beta ray spectra of isotopes. The text takes a look at commercial photographic materials for autoradiography, autoradiographic image, and resolution. The manuscript then reviews the estimation of dose and exposure time, sources of error, and techniques. Topics include chemical variables, estimation of exposure time, errors occurring during the preparation of the autoradiogram for exposure, and contour autoradiography. The book is a valuable reference for readers interested in autoradiography.
Download or read book The Plant Disease Reporter written by and published by . This book was released on 1972 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-06 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
