Based on a series of lectures delivered to the general public at the University of California, the author wittily explains the theory of quantum electrodynamics, the central aspect of much of modern physics.
What is possible, what is necessary, and what is impossible in the Nature ? This is what philosophers try to respond, from the epistemology of modality. The philosophers are analyzing such a question by starting from the viewpoint that some laws of quantum theory, despite seemed to be impossible, are necessary, because were confirmed by math and experiments. But are we sure that what the math is pointing to us is exactly what we think it is pointing to ? Here such question is analyzed, because the author's effort to eliminate a paradox, in his theory of electric fields composed by fermions of the quantum vacuum, revealed to him something much more important than the own elimination of the paradox, because he finally understood that what is subtle is not the Lord, as supposed by Einstein. What is subtle is actually the Mathematics. Thereby, before trying to respond the question on what is possible, necessary, or impossible in Nature, we have to be sure about what the math is pointing out to us. The most reasonable should be to suppose that it's impossible that the imaginary number plays any role in the physical mechanisms from which Nature works. And that, as the quantum theorists use the imaginary number in their mathematics, the conclusion is that they use a math that proves that the impossible is possible. Nevertheless, as will be shown here, the own Lord did be possible what seems to be impossible.This is illustrated in the cover of the book: in the fraction of seconds when the Universe was being created, the Lord pushed «-1», forcing it to enter inside the square root.
L'évolution des réacteurs nucléaires depuis 1942 (Expérience de fermi) peut être décrite de façon historique amenant avec le temps à un processus de sélection sévère des réacteurs dont ceux à eau légère occupant la majeure partie du biotope aujourd'hui. Actuellement, avec la demande mondiale en énergie toujours croissante et le besoin de réduction des gaz à effet de serre, le développement des réacteurs n'est pas prêt de s'arrêter. Son traités dans cet ouvrage : Réacteurs refroidis au gaz CO2, RBMK, réacteurs modérés nucléaires à eau lourde, propulsion nucléaire navale, réacteurs expérimentaux, Génération III avancée, réacteurs à haute température HTR, réacteurs à sels fondus MSR, Réacteurs LMFRs à neutrons rapides, réacteurs GFR, BWR: caractéristiques et tendances spécifiques, le rôle de LWR dans la transition de Gen III à Gen IV, fusion nucléaire, systèmes futuristes...
The evolution of nuclear reactors since the 1942 Fermi experiment can be described along the lines of natural history, with an initial flourish of uninhibited creativity followed by a severe selection process leading to a handful of surviving species, with light water reactors occupying most of the biotope today. In the actual context of a growing demand for energy for the developing world and of the need to reduce greenhouse gas emission, the nuclear reactor «species» is here to stay. This books presents: CO2 Gas-cooled Reactors, RBMK, HeavyWater Moderated Nuclear Reactors, Nuclear Marine propulsion, Experimental reactors, Advanced Generation III LightWater Reactors, High Temperature Reactors HTRs, Molten Salt Reactors MSRs, Liquid Metal-cooled Fast Neutron Reactors LMFRs, Gas-cooled Fast Reactors GFRs, BWR: specific features and trends, The role of LWR in the transition from Gen III to Gen IV, Nuclear Fusion, Futuristic systems...
The Guide to 3D Modeling provides a systematic and structured approach to 3D modeling that focuses on the visual representation of the solid. The strategy adopted for presenting these concepts is simple and effective: one page, one topic.
This way, the reader has access at a glance to an overview of all the information on a given topic. The Guide contains the basic principles of part modeling, the steps for achieving fully constrained sketches, the 3D signature of the various base solids from which to start a model, the transformation and dress-up of an existing solid, and an introduction to parts assembly. The final chapter discusses the production of design and working drawings by projection of a 3D model.
Lastly, in appendix, the reader will find the list of steps to follow when modeling a part and an overview of the degrees of freedom associated with a coincidence constraint.
Instead of referring to a specific software program, the Guide presents the reasoning and principles common to multiple modeling programs, such as SolidWorks and CATIA V5 (Dassault Systèmes), Inventor (Autodesk), Solid Edge and NX (Siemens), and open-source software such as FreeCAD.
The Guide to 3D Modeling is primarily intended for undergraduate engineering students and for students in related fields at the college level and in professional training. It is also an excellent reference for practitioners working in the industry after graduation.
Reactor physics is the discipline devoted to the study of interactions between neutrons and matter in a nuclear reactor. This third edition of Applied Reactor Physics, addresses the fundamentals of reactor physics.
Legacy numerical techniques are introduced with sufficient details to help readers implement them in Matlab. The fundamental approaches presented here provide a solid foundation for the more advanced and proprietary techniques that readers may encounter in production environments.
Applied Reactor Physics emphasizes the algorithmic nature of the numerical solution techniques used in reactor physics. Many numerical solution approaches described in the book are accompanied by Matlab scripts, and readers are encouraged to write short Matlab scripts of their own in order to solve the end-of-chapter exercises.
The third edition includes key improvements in the text, a completely rewritten appendix on numerical methods, new end-of-chapter exercises, and an extended bibliography.
Om te slagen voor een examen, moet een student veel oefeningen maken teneinde zijn kennis te testen. Dit werk verenigt meer dan 300 meerkeuzevragen in organische chemie. Het is een nuttig hulpmiddel voor studenten die zich goed willen voorbereiden om te slagen in hun eerste jaar aan de universiteit. De inhoud van deze oefenbundel is heel gevarieerd omdat het herhaaldelijk maken van dezelfde fout erg ontmoedigend is voor de student. In deze meerkeuzevragenlijst hebben de auteurs enorm veel belang gehecht aan diverse oplossingsstrategieën om meerkeuzevragen te beantwoorden. Er zijn bovendien leerfiches toegevoegd die de oplossingen in detail bespreken en de studenten de mogelijkheid bieden om bepaalde lacunes in hun kennis op gestructureerde wijze aan te vullen.
Dit handboek richt zich tot studenten uit het hoger en universitair onderwijs die een cursus inleidende chemie volgen (chemici, biochemie, biologen, fysici, wiskundigen, apothekers, (tand)artsen, biomedici en ingenieurs). De verschillende onderdelen van de algemene chemie worden op een rationele en eenvoudige manier benaderd en worden rijkelijk geïllustreerd met overzichtelijke figuren, tabellen en voorbeelden.
The book reviews the use of ion exchange resins and synthetic adsorbents in food industries such as sugar (sucrose), monosaccharides (glucose, fructose, tagatose), polyols, oligosaccharides such as inulin, synthetic sweeteners such as sucralose, fruit juices (orange juice, apple juice, other fruit juices), milk whey, amino acids, organic acids (citric, lactic, malic acid), gelatin, glycerin, nutraceuticals (vitamins, polyphenols) and various other applications such as pectins and wine stabilization. The focus is on ion exchange rather than on food processing, it is therefore addressed to all those working in food processing industries or in parallel industries for whom ion exchange is not their primary field of experience.
Hydrogen, energy vector for the future? Or, on the contrary, limited to its current applications in the field of chemistry and refining for decades to come, possibly even until the end of the century? There is much controversy over this issue and two sides to the argument. Advocates of the hydrogen civilisation consider that, following a technological revolution hydrogen will play a universal role alongside electricity as a substitute for fossil fuels, especially (but not only) in transport, leading to radical elimination of CO2 emissions. For the sceptics, and even outspoken opponents, hydrogen will remain restricted to its current applications due to the insoluble problems inherent to its generalised use, especially in transport.
This book highlights the increasing and inevitable role of "energy" hydrogen - as opposed to chemical hydrogen - in the key sectors of transport and "clean" electricity production. The first section is dedicated to current applications of energy hydrogen or those within reach in the not too distant future. The second section reviews the hydrogen production, distribution and storage technologies that are either commercially available or almost mature. The last section addresses the central issue of safety if hydrogen is to be used by the general public, before concluding on the short and medium term development perspectives of energy hydrogen.
This extensively documented book is intended for a wide audience including transport companies (road, air and waterway) and engine engineers as well as all those interested in the future of transport and fuels in the post-oil world.
The International Energy Agency's 2011 comprehensive review of Norways energy policies and programmes. The review finds that Norway has a unique twin role as a major oil and gas producer and a strong global advocate of climate change mitigation. As the third-largest exporter of energy in the world, it contributes to global energy security by providing reliable supplies to consuming countries. At the same time, the Norwegians highly value environmental sustainability and the country is taking climate policy very seriously. Norway also manages its petroleum resources and revenue in a commendable way, setting a model for other countries. The challenge now for the government is to stimulate further increases in natural gas and petroleum production from safe and environmentally sustainable operations.
Norway's large potential for hydropower generation is an asset, as European electricity markets are integrating and variable renewable energy generation is set to increase. More cross-border interconnections are needed to realise the full potential of hydropower for balancing variations in demand and supply in the regional market. Increased interconnections would also improve electricity security in Norway in times of low hydropower availability. Gas-fired power plants should also be considered for use for the same purpose.
In order to meet its ambitious targets to reduce greenhouse gas emissions, Norway needs to step up efforts at home. Although the dominance of low-carbon electricity in the energy mix limits the scope for domestic measures, large potential for emission reductions remains in oil and gas production, manufacturing and transport. However, measures to promote energy efficiency and renewable energy should be carefully designed, because they often focus on electricity and would thus not reduce emissions. Recent large increases in spending on energy RD&D and ongoing efforts to develop carbon capture and storage are very welcome.
Les transferts thermiques sont une science clé du domaine de l'énergie. Ce cours en anglais aborde l'ensemble de la discipline avec un formalisme simple. L'objectif est de privilégier la compréhension et la maitrise des phénomènes physiques. Trois niveaux d'applications se trouvent dans cet ouvrage avec des exercices résolus d'applications immédiates, des problèmes d'application résolus et des problèmes de synthèse résolus. Des données de physique sont proposées en fin d'ouvrage.
This book offers policy guidance to Thailand for fostering entrepreneurship and strengthening the performance of SMEs and their contribution to growth and development. It provides evidence-based analysis and policy recommendations on thematic issues such as access to finance for SMEs and entrepreneurs, SME participation in global markets, intellectual assets and innovation, high-growth SMEs and women's entrepreneurship.
Electricity Information provides a comprehensive review of historical and current market trends in the OECD electricity sector, including 2010 preliminary data. It provides an overview of the world electricity developments in 2009, covering world electricity and heat production, input fuel mix, supply and consumption, and electricity imports and exports. A greater focus is given to the 34 OECD countries with more detailed information covering production, installed capacity, input energy mix to electricity and heat production, consumption, electricity trades, input fuel prices and end-user electricity prices.
This volume contains data on the supply and consumption of coal, oil, natural gas, electricity, heat, renewables and waste presented as comprehensive energy balances expressed in million tonnes of oil equivalent. Complete data are available for 2008 and 2009 and supply estimates are available for the most recent year (i.e.2010). Historical tables summarise production, trade and final consumption data as well as key energy and economic indicators. The book also includes definitions of products and flows, explanatory notes on the individual country data and conversion factors from original units to energy units.
More detailed data in original units are published in the 2011 edition of Energy Statistics of OECD Countries, the sister volume of this publication.
Coal Information provides a comprehensive review of historical and current market trends in the world coal sector, including 2010 preliminary data. It provides a review of the world coal market in 2009, a statistical overview of developments, which covers world coal production and coal reserves, coal demand by type (hard, steam, coking), hard coal trade and hard coal prices. Shown in a tabular and graphic form, you'll find a more detailed and comprehensive statistical picture of historical and current coal developments in the 34 OECD member countries, by region and individually. There is for selected non-OECD countries summary statistics on hard coal supply and end-use statistics for about 40 countries and regions worldwide. Complete coal balances and coal trade data for selected years are presented on 16 major non-OECD coal-producing and -consuming countries.
A detailed reference work on gas supply and demand covering not only the OECD countries, but also the rest of the world, this publication contains essential information on LNG and pipeline trade, gas reserves, storage capacity and prices. The main part of the book however, concentrates on OECD countries, showing a detailed supply and demand balance for each country and for the three OECD regions, as well as a breakdown of gas consumption by end user. Import and export data are reported by source and destination.
This volume reviews the state of the art in conducting sustainability assessments, including the range of methodologies and tools available. It describes current practice in OECD countries, as well as the continuing debate on quantifying and comparing diverse types of short- and long-term policy impacts.
Organisation Des Nations Unies Pour L'Alimentation Et L'Agriculture
25 Juillet 2006
9782756201283
The mission of the Animal Genetic Resources Information Bulletin is the promotion of information on the better use of animal genetic resources of interest to food and agriculture production.
