Ancient materials

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  • The Metropolitan Museum takes delight in providing educational programs for the general public and especially for teachers and their students. We are pleased to offer this comprehensive resource, which contains texts, posters, slides, and other materials about outstanding works of Egyptian art from the MuseumÕs collection. The texts draw upon the truly impressive depth of knowledge of the curators in our Department of Egyptian Art, especially Dorothea Arnold, James Allen, Catharine H. Roehrig, and Marsha Hill....

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  • The ability to create intelligent machines has intrigued humans since ancient times, and today with the advent of the computer and 50 years of research into AI programming techniques, the dream of smart machines is becoming a reality. Researchers are creating systems, which can mimic human beings. Accurate mathematical models neither always exist nor can they be derived for all complex environments because the domain may not be thoroughly understood. The solution consists of constructing rules that apply when input values lie within certain designer-defined categories....

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  • From the Riddles of Ancient Egypt to Cryptography in the Renaissance, 3500 Years in the Making, From Sixteenth-Century Cryptography to the New Millennium, The Last 500 Years, Symmetric-Key Cryptography,... As the main contents of the ebook "Codes - The Guide to Secrecy From Ancient to Modern Times". Invite you to consult for additional learning materials and research.

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  • Concrete is an ancient material of construction, first used during the Roman Empire, which extended from about 20 B.C. to 200 A.D. The word concrete is derived from the Roman concretus, meaning to grow together. Although this early mixture was made with lime, cement, and a volcanic ash material called pozzolana, concrete today is a sophisticated material to which exotic constitutents can be added and, with computer-controlled batching, can produce a product capable of achieving 50,000 psi compressive strength....

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  • A look on energy, renewable energies, energy storage and synthetic fuels, hybrid architecture, fuel cells, hydrogen as a vector of energy of the future.The Earth resources are quite limited in quantity Many challenges to mankind in 21st century: development, health, water, food, demography, education, energy.In physics, energy (Ancient Greek: ἐνέργεια energeia "activity, operation"[1]) is a quantity that is often understood as the ability a physical system has to produce changes on another physical system.

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  • The sustainability and prosperity of the ancient civilizations of China, Egypt, Babylonia, Phoenicia, Persia and Roma were based on the extensive use of water for human consumption, crop irrigation, canal navigation and energy generation. Today, the worldwide scarcity of water and clean energy constitutes a central and critical problem for the whole humankind. This situation is aggravated as industrial, agricultural and municipal effl uents reach the water bodies, or the coastal seawater that is used as feed for desalination plants.

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  • Crystallization is one of the most ancient and interdisciplinary topics of research known to mankind. Crystals can be organic or inorganic and may be produced from melts, liquid solutions, vapors or even in solid state. Notwithstanding its inherently high complexity, the crystallization process is part of our everyday lives, from ice making in our homes to the most state-of-the-art chemical and electronic industry.

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  • In this Volume 2 of the series on the use of physical techniques for the study of art, archaeology, and cultural heritage, we continue our policy of choosing topics from widely different fields of cultural heritage conservation. Also, we have chosen authors both in their early and late careers. In Chapter 1, Dudley Creagh writes on “Synchrotron radiation and its use in art, archaeometry, and cultural heritage studies”. He is Professor and a Director of the Cultural Heritage Research Centre at the University of Canberra, Canberra, Australia....

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  • My primary purpose in writing and revising this book has been to provide an updated introduction to the history of medicine. Although the text began as a ‘‘teaching assistant’’ for my own one-semester survey course, I hope that this new edition will also be of interest to a general audience, and to teachers who are trying to add historical materials to their science courses or science to their history courses.

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  • The olive is one of the most ancient cultivated fruit trees. Olive cultivation has a very long history which started from the Third Millennium BC (Loukas & Krimbas, 1983) in the Eastern region of the Mediterranean sea and spread later around the basin following land and maritime routes to Italy, Spain, North Africa and France. Nowadays there are about 805 million of olive trees, 98% of which are grown in the Mediterranean countries (Tsitsipis et al., 2009). The foremost consuming countries are also the main olive oil producers.

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  • The ancient carving industry in Jepara is famous locally and worldwide. Its reputation has attracted many related economic activities linked to wood production and processing, especially furniture making. Today, Jepara is a typical example of what is called an ‘industrial district’ 1 in which growth in one sector (furniture manufacturing) has attracted thousands of small to medium-sized industries to the Kabupaten (administrative district)2 . These in turn have created an opportunity for further subsidiary activities and industries.

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  • This being the last possible volume in the series of "Beacon Lights of History" from the pen of Dr. Lord, its readers will be interested to know that it contains all the lectures that he had completed (although not all that he had projected) for his review of certain of the chief Men of Letters. Lectures on other topics were found among his papers, but none that would perfectly fit into this scheme; and it was thought best not to attempt any collection of his material which he himself had not deemed worthy or appropriate for use in this series, which embodies the best of...

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  • This paper is the third of a series of preliminary studies of aboriginal ceramic art which are intended to be absorbed into a final work of a comprehensive character. The groups of relics selected for these studies are in all cases of limited extent, and are such as can lay claim to a considerable degree of completeness. It is true that no series of archæologic objects can ever be considered complete, but in exceptional cases the sources of supply may be so thoroughly explored that the development of new features of importance cannot reasonably be expected.

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  • The field of biomechanics has been evolving from the ancient Greeks times. Recent publications and research in biomechanics sky rocketed as the field of traditional biomechanics is creating new opportunities in diagnostics, therapy, rehabilitation, motion preservation, kinesiology, total joint replacement, biomechanics of living systems at small scale, and other areas.

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  • I cannot permit this Edition of "The Ancient Church" to appear before the citizens of the United States without acknowledging my obligations to Mr Charles Scribner of New York. Mr Scribner was the first gentleman connected with the noble profession to which he belongs, either in the Old or in the New World, from whom I received encouragement in this undertaking; and his prompt and generous offers aided me materially in making arrangements for the publication of the work in Great Britain.

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  • I. PHONETICS. Choose the word whose stress pattern is different from that of the others. 1. A. weather B. unique C. highland D. ladder 2. A. experience B. hurricane C. volcano D. material 3. A. dependence B. prepare C. prediction D. forecast 4. A. tidal B. ancient C. amount D. heavy 5. A. tropical B. commercial C. disatrous D. extensive II. VOCABULARY. Choose the best option (A, B, C or D) which can best replace the underlined word / words. 6. Germination of seeds begins with the absorption of water, the swelling of the whole seed, and the cracking...

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  • 4 Potassium Ever since ancient classical times, materials that contained potassium have been used as fertilizers, such as excrement, bird manure, and ashes (1), and these materials certainly contributed to crop growth and soil fertility

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  • The atomic theory of matter asserts that material bodies are made up of small particles. This theory was founded in ancient times by Democritus and expressed in poetic form by Lucretius. This view was challenged by the opposite theory, according to which matter is a continuous expanse.

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  • Although magnetism has been known since ancient times, the connection between electricity and magnetism was not discovered until the early 19th century. Electromagnetics is the study of electric and magnetic field behavior. These fields arise from charged particles both at rest and in motion, and they may exert forces on other charged particles and materials. Hans Christian Oersted (a Danish scientist) demonstrated the relation between electricity and magnetism. In 1819, he showed that a compass needle could be deflected by a current-carrying conductor.

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  • The United Kingdom’s constitution, while of ancient origins, remains both dynamic and vibrant. As every public lawyer is only too aware, nowadays, the proper boundaries of constitutional and administrative law are both increasingly wide and subject to debate. In compiling any textbook on this subject, one of the principal preliminary tasks lies in defining the scope of material to be included and the approach to be adopted in relation to that material.

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