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- Wood (8)
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- Balsam fir (3)
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Articles 31 - 43 of 43
Full-Text Articles in Forest Sciences
Tb47: The Relationship Of Fibril Angle To Certain Factors In Plantation-Grown Red Pine, R. S. Shumway, Norman P. Kutscha, J. E. Shottafer
Tb47: The Relationship Of Fibril Angle To Certain Factors In Plantation-Grown Red Pine, R. S. Shumway, Norman P. Kutscha, J. E. Shottafer
Technical Bulletins
The purpose of this study was to make an estimate of the average ring fibril angle within the stem of 48-year old plantation-grown red pine (Pinus resinosa, Ait.). It was also conducted to determine the degreed relationship between this estimated average ring fibril angle and various factors such as position in the tree, latewood percent, specific gravity, and growth rate.
Tb45: Foreign Woods Utilized In Maine, Norman P. Kutscha, L. L. Emery
Tb45: Foreign Woods Utilized In Maine, Norman P. Kutscha, L. L. Emery
Technical Bulletins
The purpose of this study was to (a) evaluate the extent to which foreign woods are used in the state of Maine, (b) to see if any problems exist in the use of these woods, (c) to compile information on the characteristics of the species used and provide this information to the users by supplying them with a copy of this bulletin, and (d) to provide for a better understanding of the significance of foreign wood use in the state.
Tb41: The Potential Of Lignin Research, Norman P. Kutscha, James R. Gray
Tb41: The Potential Of Lignin Research, Norman P. Kutscha, James R. Gray
Technical Bulletins
Lignin constitutes a vast natural resource, which can be found in various forms depending on where it is obtained and how it is isolated. To most easily isolate lignin, we must understand more thoroughly its chemical structure and how it is bound to the other wall components. To use lignin more effectively and develop new uses for it, we must understand its properties. Likewise, the most effective use of lignin-containing materials such as wood and wood products depends on understanding how their properties are affected by the properties of lignin.
Tb28: Weight, Nutrient Element And Productivity Studies Of Seedlings And Saplings Of Eight Tree Species In Natural Ecosystems, Harold E. Young, Paul M. Carpenter
Tb28: Weight, Nutrient Element And Productivity Studies Of Seedlings And Saplings Of Eight Tree Species In Natural Ecosystems, Harold E. Young, Paul M. Carpenter
Technical Bulletins
The objective of this study was to obtain weight and nutrient element information on complete trees ranging from 1 to 35 ft in height above ground for the same eight species (red spruce, balsam fir, white pine, hemlock, northern white cedar, white birch, red maple and aspen) as a downward extension in size classes.
Tb27: Fresh And Dry Weight, Nutrient Elements And Pulping Characteristics Of Northern White Cedar, Thuja Occidentalis, Richard F. Dyer
Tb27: Fresh And Dry Weight, Nutrient Elements And Pulping Characteristics Of Northern White Cedar, Thuja Occidentalis, Richard F. Dyer
Technical Bulletins
Northern white cedar was selected as an eighth species for complete tree investigation of weight, nutrient elements and pulping characteristics because it comprises approximately 13% of the total softwood growing stock in Maine, but only amounts to about 2% of the total softwood timber cut for all purposes. It is hoped that the information in this bulletin will provide basic information permitting northern white cedar to become a more meaningful segment of the Maine forest economy.
Tb25: The Effect Of Stand Factors On The Productivity Of Wheeled Skidders In Eastern Maine, Ernest B. Harvey Iii, Thomas J. Corcoran
Tb25: The Effect Of Stand Factors On The Productivity Of Wheeled Skidders In Eastern Maine, Ernest B. Harvey Iii, Thomas J. Corcoran
Technical Bulletins
The objective of this study was to determine what forest stand factors, as they constitute a set of operating conditions, affect skidder and skidder crew productivity and the degree of their effect.
Tb20: Preliminary Tables Of Some Chemical Elements In Seven Tree Species In Maine, Harold E. Young, Paul N. Carpenter, Russell A. Altenberger
Tb20: Preliminary Tables Of Some Chemical Elements In Seven Tree Species In Maine, Harold E. Young, Paul N. Carpenter, Russell A. Altenberger
Technical Bulletins
These tables show the amount in grams for each of twelve elements for the complete tree and the merchantable bole, for seven tree species (red spruce, balsam fir, hemlock, white pine, white birch, red maple, aspen) in terms of five height classes and ten diameter classes.
Tb18: Mensuration Methods For Site Classification Of Shade Tolerant Tree Species, Leigh E. Hoar Jr., Harold E. Young
Tb18: Mensuration Methods For Site Classification Of Shade Tolerant Tree Species, Leigh E. Hoar Jr., Harold E. Young
Technical Bulletins
All of the climax tree species in Maine are shade tolerant. This means that they have the capacity of surviving and growing slowly in the seedling, sapling and pole-size stages. As a result none of the established methods employing total age are applicable. In searching for a way to overcome this problem an entirely new approach to quantitative site evaluation was conceived. This study evaluates this new mensurational approach to site evaluation for shade-tolerant trees.
Tb17: Fiber Weight And Pulping Characteristics Of The Logging Residue Of Seven Tree Species In Maine, Harold E. Young, Andrew J. Chase
Tb17: Fiber Weight And Pulping Characteristics Of The Logging Residue Of Seven Tree Species In Maine, Harold E. Young, Andrew J. Chase
Technical Bulletins
This publication presents information on fiber weight and pulping characteristics of the logging residue of red spruce, red maple, white birch, white pine, balsam fir, hemlock, and aspen. The accumulation of evidence concerning the amount of fiber in the present logging residue and the pulping potential of that residue justifies this synthesis of the various studies in a single publication.
Tb15: The Standardization Of Symbols In Forest Mensuration, International Union Of Forestry Research Organizations
Tb15: The Standardization Of Symbols In Forest Mensuration, International Union Of Forestry Research Organizations
Technical Bulletins
This technical bulletin reprints the recommendations on the standardization of symbols in forest mensuration, originally published in 1959. The recommendations were made by a small working group in Section 25 of the International Union of Forestry Research Organizations, which was appointed at the Congress of the Union held in Rome in 1953. Members of the group were asked to enquire into the possibility of standarizing the use of symbols (and the systems of measurement) in forest mensuration and to make recommendations.
Tb12: Preliminary Fresh And Dry Weight Tables For Seven Tree Species In Maine, Harold E. Young, Lars Strand, Russell Altenberger
Tb12: Preliminary Fresh And Dry Weight Tables For Seven Tree Species In Maine, Harold E. Young, Lars Strand, Russell Altenberger
Technical Bulletins
The studies on which the tables in this publication were based establish that data on the complete tree can be obtained by employing modern harvesting equipment thus eliminating a problem of measurement that has been impossible or difficult for hundreds of years. The tables in this publication are based on a limited amount of data obtained in a small area. However, these indicate the method and they can be useful guides for professional foresters and helpful to research workers who are seeking improved techniques for biological investigations such as site productivity. They are a beginning in an approach to a …
Tb10: A Comparison Of Arch-Yarding And Ground-Skidding Of Pine Sawlogs In The University Of Maine Forest, Henry A. Plummer, Roger F. Taylor
Tb10: A Comparison Of Arch-Yarding And Ground-Skidding Of Pine Sawlogs In The University Of Maine Forest, Henry A. Plummer, Roger F. Taylor
Technical Bulletins
The decision whether to use a trailing-arch or operate by ground-skidding methods may face many sawlog producers. This case study attempted to determine statistically whether there existed significant differences between the two methods of operation by examining the various activities performed by a crawler-type tractor within the arch-yarding and ground-skidding phases of a harvesting system.
Tb7: Scheduling Of Pallet Trucks In Pulpwood Operations, Thomas J. Corcoran
Tb7: Scheduling Of Pallet Trucks In Pulpwood Operations, Thomas J. Corcoran
Technical Bulletins
This study illustrates a method of scheduling pallet trucks using data obtained from pallet operations in Maine. The method, which is based upon a linear programming technique, can be employed in the determination of the minimum number of trucks required to handle a continuous flow of pulpwood in situations involving multi-pickup and multi-delivery points. In addition, the program establishes times and places of pulpwood pickup and delivery for each required truck.