Pierre Louis Moreau de Maupertuis
Pierre Louis Moreau de Maupertuis , 1698-1759, French mathematician and astronomer. For his skillful support of Newton's theory he was admitted to the Royal Society of London in 1728. He headed (1736-37) an expedition of academicians to Lapland, where he confirmed Newton's theory of the flattening of the earth at the poles. In 1740 he went to Berlin upon the invitation of Frederick II of Prussia, who later placed him in charge of the new academy. Besides his numerous astronomical writings, including Discours sur la figure des astres (1732) and Discours sur la parallaxe de la lune (1741), he wrote a work setting forth a mechanistic view of the universe, Essai de cosmologie (1750), and several biological studies. Quarrels, particularly with Samuel Koenig and Voltaire (who satirized him in several writings, especially Diatribe du Docteur Akakia ), and illness complicated his later years.
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NATURAL DECAY RESISTANCE OF HEARTWOOD FROM DEAD, STANDING YELLOW-CEDAR TREES: LABORATORY EVALUATIONS.
Magazine article from: Forest Products Journal; 1/1/2000; ; 700+ words
; ...degrades, leaving columns of essentially heartwood standing like ghosts in the forest until...characterize the natural durability of heartwood from dying and dead yellow-cedar trees...were to characterize the durability of heartwood in living and dead stems using standard...
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Influence of site on sapwood and heartwood ratios of Turkish calabrian pine.
Magazine article from: Forest Products Journal; 4/1/2003; ; 700+ words
; ...influence of site factor on the sapwood and heartwood ratios of Turkish calabrian pine (Pinus...results indicated that the sapwood and heartwood ratios of the calabrian pine wood grown...percent, respectively. The highest heartwood ratio (8.33%) was determined for...
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 "Portland Press Herald (Maine)")
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Holding out hope at Heartwood
Newspaper article from: Portland Press Herald (Maine); 3/29/2009; ; 700+ words
; ...03-29-2009 Holding out hope at Heartwood Byline: Bob Keyes by Bob Keyes staff...News These should be heady times at Heartwood College of Art, the little-college...Maine State Board of Education approved Heartwood's plan to offer a low-residency master...
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Models for predicting vertical profiles of heartwood diameter in mature Scots pine.(Report)
Magazine article from: Canadian Journal of Forest Research; 3/1/2009; ; 700+ words
; ...and many other European countries the heartwood of Scots pine (Pinus sylvestris L...increase the risk of decay. While the heartwood of Scots pine is regarded as moderately...made from Scots pine consist of a mix of heartwood and sapwood. A board consisting of wood...
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The influence of irrigation and fertilization on heartwood and sapwood contents in 18-year-old Eucalyptus globulus trees.
Magazine article from: Canadian Journal of Forest Research; 10/1/2006; ; 700+ words
; ...trees was assessed in relation to heartwood content, accumulation of extractives...of growth (IL). Within the tree, heartwood content decreased from the base upwards...height for IL and C trees, respectively. Heartwood volume represented 65.6% and 55...
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Heartwood Center Announces Launch of 2009 Women And Cancer Program.
PR Newswire; 3/10/2009; 681 words
; ...CHICAGO, March 10 /PRNewswire/ -- The Heartwood Center today announced that it has launched...of this year, making available all of Heartwood's services free of charge to a number...said Nancy Floy, Executive Director of Heartwood Center. "Without it, and the State...
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Sawing simulation of maritime pine (Pinus pinaster Ait.) stems for production of heartwood-containing components.
Magazine article from: Forest Products Journal; 4/1/2005; ; 700+ words
; Abstract Naturally durable heartwood products have smaller dimensional...production of products containing heartwood from maritime pine (Pinus pinaster...internal knot architecture, and heartwood. Stems were used as raw material...
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The relationship between site and tree characteristics and the presence of wet heartwood in black spruce in the boreal forest of Quebec, Canada.
Magazine article from: Canadian Journal of Forest Research; 6/1/2006; ; 700+ words
; Abstract: Wet heartwood in black spruce (Picea mariana (Mill...try to avoid harvesting stands with wet heartwood, but no relationship has been yet established between the incidence of wet heartwood and tree or site characteristics. To...
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Comparison of fixation rates of earlywood, latewood, sapwood, and heartwood of CCA-treated Douglas-fir, southern pine, and eastern larch. (Solid Wood Products).(Statistical Data Included)
Magazine article from: Forest Products Journal; 5/1/2002; ; 700+ words
; ...sapwood), whole sapwood, and whole heartwood of Douglas-fir (Pseudotsuga menziesii...species. CCA also fixed more rapidly in heartwood than in sapwood in all species. Generally...comparative CCA fixation of sapwood and heartwood. Even though most treated wood contains...
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Field exposure of Pinus heartwoods to subterranean termite damage (Isoptera: Rhinotermitidae, Mastotermitidae).(Report)
Magazine article from: Australian Forestry; 6/1/2004; ; 700+ words
; ...timber are naturally durable and the heartwood is resistant to termite damage. Table...in-ground performance of the outer heartwood, and the CSIRO Durability ratings of...Durability Ratings--For the Mature Outer Heartwood of Selected Species'. It includes a...
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heartwood
Book article from: The Columbia Encyclopedia, Sixth Edition
heartwood the central, woody core of a tree...conduction of water and dissolved minerals; heartwood is usually denser and darker in color...Before the synthesis of aniline dyes, the heartwood of several tropical trees (sold collectively...
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Tree
Encyclopedia entry from: UXL Encyclopedia of Science
...is known as the sapwood. Finally, the heartwood is in the center of the tree. As a tree...These waste-filled xylem cells form the heartwood. Typically darker than the sapwood, the heartwood is very stiff and serves to strengthen...
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Wood
Encyclopedia entry from: The Gale Encyclopedia of Science
...waste-filled secondary xylem is called heartwood. By the time that a tree is larger than...most of its biomass is composed of heartwood. New sapwood is created during each...years these cells become part of the heartwood. It is the heartwood of trees that is...
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Ebony
Encyclopedia entry from: The Gale Encyclopedia of Science
...beautiful wood. Only the black or brown heartwood is used commercially. There are more...persimmon ( Diospyrus virginiana ), whose heartwood is not a full black and does not have...source of the most desirable, jet-black heartwood. It comes from the species Diospyrus...
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rosewood
Book article from: The Columbia Encyclopedia, Sixth Edition
...of several species of tropical trees, especially for the heartwood of certain leguminous trees of the genus Dalbergia of the...close to extinction. It is obtained from the purplish-black heartwood of old trees, is rather oily, fragrant—whence...
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