Residues

This meeting, held in Berlin, Germany, on 18-27 September 2018, reviewed pesticide use patterns and good agricultural practices, data on the chemistry and composition of the pesticides, and methods of analysis for pesticide residues and recommended maximum residue levels. The report also contains information on acceptable daily intakes and acute reference doses of pesticides for humans, and general principles for the evaluation of pesticides. The recommendations of the joint FAO and WHO meeting, including further research and information, are proposed for use by Member governments of the respective agencies and other interested parties. The meeting was held in pursuance of recommendations, made by previous meetings and accepted by the governing bodies of FAO and WHO, that studies should be undertaken jointly by experts to evaluate possible hazards to humans arising from the occurrence of pesticide residues in foods.

An insightful exploration of the key aspects concerning the chemical analysis of antibiotic residues in food The presence of excess residues from frequent antibiotic use in animals is not only illegal, but can pose serious health risks by contaminating products for human consumption such as meat and milk. Chemical Analysis of Antibiotic Residues in Food is a single-source reference for readers interested in the development of analytical methods for analyzing antibiotic residues in food. It covers themes that include quality assurance and quality control, antibiotic chemical properties, pharmacokinetics, metabolism, distribution, food safety regulations, and chemical analysis. In addition, the material presented includes background information valuable for understanding the choice of marker residue and target animal tissue to use for regulatory analysis. This comprehensive reference: Includes topics on general issues related to screening and confirmatory methods Presents updated information on food safety regulation based on routine screening and confirmatory methods, especially LC-MS Provides general guidance for method development, validation, and estimation of measurement uncertainty Chemical Analysis of Antibiotic Residues in Food is written and organized with a balance between practical use and theory to provide laboratories with a solid and reliable reference on antibiotic residue analysis. Thorough coverage elicits the latest scientific findings to assist the ongoing efforts toward refining analytical methods for producing safe foods of animal origin.

Access to sustainable energy is essential for development, poverty reduction and food security. Rwanda, like many other developing countries, is working on identifying sustainable energy solutions to ensure access to energy. Bioenergy is one possible form of renewable energy that countries are looking at to supply part of their energy portfolio. Rwanda currently relies on traditional biomass for energy supply, and shifting away from traditional biomass use would lower its dependency on traditional biomass and improve access to modern sustainable energy forms. Sustainable bioenergy interlinks closely with the agriculture sector, therefore it is necessary to find specific options that minimize negative impacts on the environment and food security. This accomplishes the dual purpose of energy security and food security. This report assesses the use of agriculture residues for the production of bioenergy in Rwanda. The methodology used for the assessment is the Bioenergy and Food Security (BEFS) approach of the Food and Agriculture Organization of the United Nations (FAO). The report provides a detailed assessment of the potential of crop, livestock and woody biomass availability for the production of off-grid electricity solutions and cooking fuels. Through the assessment, a number of specific bioenergy pathways are identified as suitable for bioenergy production. These options should be carried forward for piloting in the country and ground truthing.

A Joint Meeting of the Food and Agriculture Organization of the United Nations (FAO) Panel of experts on Pesticide Residues in Food and the Environment and the World Health Organization (WHO) Core assessment Group on Pesticide Residues (JMPR) was held in Washington, United States of America, from 19 to 28 September 2023 with FAO pre-meeting from 13 to 18 September 2023. The FAO Panel Members held its pre-meetings in biweekly virtual preparatory sessions from July to September. The WHO Core Assessment Group had organized several preparatory sessions during 2022 and 2023. The Meeting involved 58 participants from five continents spanning most time zones. The Meeting evaluated 35 pesticides and estimated 300 MRLs.

"Organic residue analysis is a technical specialty that blends an unusual type of instrumental organic chemistry and archaeology. Because it is considered abstruse, archaeologists of all degrees of experience tend to struggle with how to apply the technology to archaeological questions and how to sample effectively in the field to answer these questions. "Organic Residues in Pottery" uses a case-study approach to explain the methods and application of organic residue analysis to archaeologists in a reader-friendly tone. The case studies come from Reber's more than twenty years of research. Pottery analysis is considered an important component of excavating a site. Organic pottery residues are made up of chemicals that absorb into pots over their use-lifetime. Analysis of the residues can allow fascinating interpretations of human behavior that are only recognizable from this analysis. The analysis allows archaeologists to interpret the ways that people have used pottery. For instance, pottery analysis can help reveal what people ate, whether different types of vessels were used for different cooking or foodstuffs preparation, and whether "elite" vessels were in use. Every residue comprises many different chemicals. Analysis includes a series of steps. Reber starts with basic information, such as how a residue forms in different environments. Other chapters discuss excavation of the residue (including extraction, instrumentation, and analysis), interpreting results, different contaminators, common substances found (e.g., caffeine and nicotine, maize, tree resins, and fish and shellfish), how to sample, how to talk with a lab analyst, and future benefits of residue analysis"--

Residue number systems (RNSs) and arithmetic are useful for several reasons. First, a great deal of computing now takes place in embedded processors, such as those found in mobile devices, for which high speed and low-power consumption are critical; the absence of carry propagation facilitates the realization of high-speed, low-power arithmetic. Second, computer chips are now getting to be so dense that full testing will no longer be possible; so fault tolerance and the general area of computational integrity have become more important. RNSs are extremely good for applications such as digital signal processing, communications engineering, computer security (cryptography), image processing, speech processing, and transforms, all of which are extremely important in computing today. This book provides an up-to-date account of RNSs and arithmetic. It covers the underlying mathematical concepts of RNSs; the conversion between conventional number systems and RNSs; the implementation of arithmetic operations; various related applications are also introduced. In addition, numerous detailed examples and analysis of different implementations are provided. Sample Chapter(s). Chapter 1: Introduction (301 KB). Contents: Introduction; Mathematical Fundamentals; Forward Conversion; Addition; Multiplication; Comparison, Overflow-Detection, Sign-Determination, Scaling, and Division; Reverse Conversion; Applications. Readership: Graduate students, academics and researchers in computer engineering and electrical & electronic engineering.