Spiral Grain and Wave Phenomena in Wood Formation PDF Download
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Author: John M. Harris
Publisher: Springer Science & Business Media
ISBN: 364273779X
Category : Technology & Engineering
Languages : en
Pages : 226
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Book Description
It is widely recognized that spiral grain in trees severely reduces the value of sawn timber through warping and loss of strength, and that it also causes problems for other wood uses as diverse as transmission poles or plywood. Yet, paradoxically, there are highly valued grain patterns including wavy and interlocked grain, whose origins in the cambium invite direct comparison with those of spiral grain, so that many authorities believe them to be related phenomena. In recent years this concept has prompted extensive research into the anatomy, genetics, and physiology of all such grain patterns in wood. As a result it has become apparent that tree cambia provide excellent systems through which to study the origins of stem polarity and the complex processes of morphogenetic control in plants. Beside these and other pressing topics for research, the book examines methods of measuring grain deviations, and considers their influence on wood properties, on the economics of timber production, and on wood manufacturing.
Author: John M. Harris
Publisher: Springer Science & Business Media
ISBN: 364273779X
Category : Technology & Engineering
Languages : en
Pages : 226
Get Book Here
Book Description
It is widely recognized that spiral grain in trees severely reduces the value of sawn timber through warping and loss of strength, and that it also causes problems for other wood uses as diverse as transmission poles or plywood. Yet, paradoxically, there are highly valued grain patterns including wavy and interlocked grain, whose origins in the cambium invite direct comparison with those of spiral grain, so that many authorities believe them to be related phenomena. In recent years this concept has prompted extensive research into the anatomy, genetics, and physiology of all such grain patterns in wood. As a result it has become apparent that tree cambia provide excellent systems through which to study the origins of stem polarity and the complex processes of morphogenetic control in plants. Beside these and other pressing topics for research, the book examines methods of measuring grain deviations, and considers their influence on wood properties, on the economics of timber production, and on wood manufacturing.
Author: Timothy Clark
Publisher:
ISBN: 9780500094068
Category :
Languages : en
Pages : 352
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Book Description
A major publication on Hokusai's remarkable late work, incorporating fresh scholarship on the sublime paintings and prints the artist created in the last thirty years of his life
Author: Sonali Deraniyagala
Publisher: McClelland & Stewart
ISBN: 0771025386
Category : Biography & Autobiography
Languages : en
Pages : 146
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Book Description
A brave, intimate, beautifully crafted memoir by a survivor of the tsunami that struck the Sri Lankan coast in 2004 and took her entire family. On December 26, Boxing Day, Sonali Deraniyagala, her English husband, her parents, her two young sons, and a close friend were ending Christmas vacation at the seaside resort of Yala on the south coast of Sri Lanka when a wave suddenly overtook them. She was only to learn later that this was a tsunami that devastated coastlines through Southeast Asia. When the water began to encroach closer to their hotel, they began to run, but in an instant, water engulfed them, Sonali was separated from her family, and all was lost. Sonali Deraniyagala has written an extraordinarily honest, utterly engrossing account of the surreal tragedy of a devastating event that all at once ended her life as she knew it and her journey since in search of understanding and redemption. It is also a remarkable portrait of a young family's life and what came before, with all the small moments and larger dreams that suddenly and irrevocably ended.
Author: Voichita Bucur
Publisher: CRC Press
ISBN: 1351357360
Category : Technology & Engineering
Languages : en
Pages : 300
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Book Description
Acoustics of Wood offers a detailed treatment of numerous topics that are valuable to those working with wood in architecture, engineering, acoustics, and the crafting of musical instruments. It presents a comprehensive account of the progress and current knowledge concerning wood acoustics, outlining the anatomy and physiology of wood and the specific applications in which its acoustic properties are relevant. Acoustics of Wood reviews state-of-the-art measurement systems and includes material that has not been widely published. Divided into three main parts, the book describes environmental acoustics, presents acoustics methods for the characterization of the elastic behavior of wood, and discusses acoustic methods for the assessment of wood quality.
Author: Susan Casey
Publisher: Anchor Canada
ISBN: 0385666683
Category : Science
Languages : en
Pages : 434
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Book Description
A riveting and rollicking tour-de-force about the terrifying power of nature's most deadly phenomena — colossal waves — and the scientists and super surfers who are obsessed with them. The New York Times bestselling author of The Devil's Teeth probes the dramatic convergence of baffling gargantuan waves that pummel oil rigs and sink massive ships, the extreme surfers willing to stare down death in order to ride them, and the marine scientists trying to unlock the physics of these waves, the climate changes that are provoking them, and what chaos they might wreak. Susan Casey explores the phenomenon of monster waves and how they have become an obsession for extreme surfers like Laird Hamilton — who serves as the author's guide as she takes the reader into the intense, white-knuckle world of 100-foot waves.
Author: Michael Earl Craig
Publisher:
ISBN: 9781940696812
Category : Poetry
Languages : en
Pages : 122
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Book Description
Humorous and wildly inventive poems from a master of absurdist poetic theater.
Author: Jason De Haan
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
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Book Description
Author: Miha Humar
Publisher: MDPI
ISBN: 3039288210
Category : Technology & Engineering
Languages : en
Pages : 350
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Book Description
Wood-based materials are CO2-neutral, renewable, and considered to be environmentally friendly. The huge variety of wood species and wood-based composites allows a wide scope of creative and esthetic alternatives to materials with higher environmental impacts during production, use and disposal. Quality of wood is influenced by the genetic and environmental factors. One of the emerging uses of wood are building and construction applications. Modern building and construction practices would not be possible without use of wood or wood-based composites. The use of composites enables using wood of lower quality for the production of materials with engineered properties for specific target applications. Even more, the utilization of such reinforcing particles as carbon nanotubes and nanocellulose enables development of a new generation of composites with even better properties. The positive aspect of decomposability of waste wood can turn into the opposite when wood or wood-based materials are exposed to weathering, moisture oscillations, different discolorations, and degrading organisms. Protective measures are therefore unavoidable for many outdoor applications. Resistance of wood against different aging factors is always a combined effect of toxic or inhibiting ingredients on the one hand, and of structural, anatomical, or chemical ways of excluding moisture on the other.
Author: Voichita Bucur
Publisher: Springer Science & Business Media
ISBN: 3540305947
Category : Technology & Engineering
Languages : en
Pages : 403
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Book Description
Considerable activity in the acoustics of wood has occurred since the first edition of this book in 1995. An informal survey of a number of the published articles and papers presented at international conferences revealed that the interest of the wood science community is continually increasing. In this context, I felt c- pelled to revise the text in accordance with newer findings and this prompted the addition in the present book of 159 new references added to the existing 850 in the first edition. As a result of the favorable comments upon the first edition, from students and colleagues, I have included a part on mathematical theory related to wave pro- gation in orthotropic solids in the general text, in order to enable the interested reader to follow the essentially physical aspects of the subject. A new chapter related to “acousto-ultrasonics” is introduced; Chapters 4, 5, 6, 8, 9, 10, 11, and 12 have been considerably expanded and a significant redistribution of the subject matter from the earlier edition has been made.
Author: Timothy Clark
Publisher: Objects in Focus
ISBN: 9780714124674
Category : Art, Japanese
Languages : en
Pages : 0
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Book Description
'The Great Wave' is a colour woodblock print designed by Japanese artist Hokusai in around 1830. The print, of which numerous multiples were made, shows a monster of a wave rearing up and about to come crashing down on three fishing boats and their crews. One of a monumental series known as 'Thirty-six views of Mount Fuji', Hokusai's Great Wave - with the graceful snow-clad Mount Fuji on the horizon, unperturbed but wittily dwarfed by the towering strength of the wave that threatens to engulf the struggling boats - has become an iconic image of the power of nature and the relative smallness of man. One of the most famous pieces of Japanese art, this extraordinary artwork has had a huge impact worldwide and has served as a source of inspiration to artists, both past and present. This beautifully illustrated book explores the meaning behind Hokusai's Great Wave, in the context of the Mount Fuji series and Japanese art as a whole. Taking an intimate look at the Wave's artistic and historical significance and its influence on popular culture, this concise introduction explains why Hokusai's modern masterpiece had such an impact after its creation in 1830 and why it continues to fascinate, inspire and challenge today.
