Post-test Analysis of Components from Selenide Isotope Generator Modules M-7, M-15, and M-18

Post-test Analysis of Components from Selenide Isotope Generator Modules M-7, M-15, and M-18
Author:
Publisher:
Total Pages:
Release: 1979
Genre:
ISBN:

Several critical components removed from SIG (Selenide Isotope Generator) thermoelectric modules M-7, M-15C, M-15D, and M-18 were examined. These modules failed to show the predicted stability and conversion efficiency. Understanding the degradation and identifying means for preventing it necessitated detailed post-test examinations of key parts in the modules. Steel springs, which provided pressure for contacts at the hot and cold ends of P- or N-legs, relaxed more than expected. Beryllium oxide insulators had dark deposits that caused electrical shorts. The GdSe1 49 N-leg exhibited cracking. The (Cu, Ag)2Se P-leg lost weight or sublimed excessively in module M-7 and more than expected in the other modules.

Cyclotron Produced Radionuclides

Cyclotron Produced Radionuclides
Author: International Atomic Energy Agency
Publisher:
Total Pages: 266
Release: 2009
Genre: Business & Economics
ISBN: 9789201069085

Application of radioisotopes has shown significant growth in the past decade, and a major factor contributing towards this growth is the availability of a large number of cyclotrons dedicated to the production of radioisotopes for medical applications. Although there are many articles in journals on cyclotrons and their use for radioisotope production, there is no single source of information for beginners on radioisotope production using cyclotrons. This publication attempts to address this deficiency. Its contains chapters on accelerator technology, theoretical considerations of nuclear reactions, the technology behind targetry, techniques on preparation of targets, irradiation of targets under high beam currents, target processing and target recovery.

A Brief Practical Guide to Eddy Covariance Flux Measurements

A Brief Practical Guide to Eddy Covariance Flux Measurements
Author: George Burba
Publisher: LI-COR Biosciences
Total Pages: 214
Release: 2010
Genre: Science
ISBN: 0615430139

This book was written to familiarize beginners with general theoretical principles, requirements, applications, and processing steps of the Eddy Covariance method. It is intended to assist in further understanding the method, and provides references such as textbooks, network guidelines and journal papers. It is also intended to help students and researchers in field deployment of instruments used with the Eddy Covariance method, and to promote its use beyond micrometeorology.

Handbook of Reference Methods for Plant Analysis

Handbook of Reference Methods for Plant Analysis
Author: Yash Kalra
Publisher: CRC Press
Total Pages: 326
Release: 1997-12-29
Genre: Science
ISBN: 9781420049398

The Handbook of Reference Methods for Plant Analysis is an outstanding resource of plant analysis procedures, outlined in easy-to-follow steps and laboratory-ready for implementation. Plant laboratory preparation methods such as dry ashing and acid and microwave digestion are discussed in detail. Extraction techniques for analysis of readily soluble elements (petiole analysis) and quick test kits for field testing are also presented. This handbook consolidates proven, time tested methods in one convenient source. Plant scientists in production agriculture, forestry, horticulture, environmental sciences, and other related disciplines will find the Handbook a standard laboratory reference. The Handbook was written for the Soil and Plant Analysis Council, Inc., of which the editor is a board member. The council aims to promote uniform soil test and plant analysis methods, use, interpretation, and terminology; and to stimulate research on the calibration and use of soil testing and plant analysis. This reference will help readers reach these important goals in their own research.