Life Sciences Commons^™

The Effect Of Three Different Surface Sizes On Coated Sheet Properties, Roy W. Kemppainen

Paper Engineering Senior Theses

A literature search showed that although much work has been done on the mechanism of coating migration (1, 3, 5) and the influence of base sheet properties on migration (2, 8). No reports were found on the influence of different surface sizes on coating migration. The functions of a surface size in coating base stock is threefold. First, it is to resist excessive water penetration so that the sheet will retain sufficient strength for the coating operation. Second, the smoothness which it imparts is beneficial to further printing processes, especially in the case of offset. The third function of a …

Environmental Law--Clearcutting In The National Forests: A Violation Of The Organic Act Of 1897, Charles F. Printz Jr.

West Virginia Law Review

No abstract provided.

Studies On The Causes Of Tree Distribution In A Forest Type In The Dismal Swamp National Wildlife Refuge, Thomas A. Janszen

Biological Sciences Theses & Dissertations

Vegetational composition and environmental parameters were analyzed in a forest type of the Dismal Swamp. A 0.5 ha forest stand was divided into 200 5 x 5 meter contiguous quadrats and the tree size classes were precisely mapped. Fifty soil samples were analyzed for texture, pH, and major nutrients. A topographic map was constructed with precision to 0.01 ft. Analysis of variance tests showed non-randomness to exist in soil texture and nutrient content while homogeneity tests showed non-randomness in distribution of some woody species. Factor analysis indicated no significant correlations between soil quality, topography, and woody species. Findings indicate that …

Nepal Studies Association Newsletter, Issue 5, Nepal Studies Association, John Scholz

Nepal Studies Association Newsletter

No abstract provided.

Lucille Vinyard Journal 1974, Lucille Vinyard

Lucille Vinyard Journal Collection

No abstract provided.

Wildlife Habitats In Managed Rangelands-- The Great Basin Of Southeastern Oregon, Wayne Bowers, Bill Hosford, Art Oakley, Carl Bond

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

All land management activities on managed rangelands will have some impact(s) on fish habitat; those in the riparian zone will have the greatest impact(s). Native trout populations in the Great Basin of southeastern Oregon exhibit predictable responses to alterations in their habitats; optimum production of native trout is therefore achievable through careful habitat management.

The Effects Of Molecular Weight, Agitation And Zeta Potential Of Retention Aids On Filler Retention, Trieu Nguyen

Paper Engineering Senior Theses

When it comes to filler retention, the most frequently studied parameters are: Molecular weight of the retention aid, degree of agitation, and zeta potential.

Alum, as an electrolyte, and various polymers of the same chemical structure, but different molecular weights were evaluated for their performances in retaining TiO₂. Different degrees of agitation were introduced to the stock to investigate the effect of turbulence on retention, and, finally, zeta potential was varied to observe its effect.

Higher molecular weight polymer was found to produce better retention. On the other hand, agitation reduced it. Retention seemed to be favorable with …

Improving Height/Age Data From Stem Analysis, J. David Lenhart

Faculty Publications

No abstract provided.

Needle Variation In Loblolly Pine From Mesic And Xeric Seed Sources, M. Victor Bilan, T.A. Knauf

Faculty Publications

Anatomical modifications in protective layers and stomatal characteristics of needles which would have moisture conserving effects were found in 2-yr-old seedlings of 1oblolly pines of the Bastrop County, Texas, provenance. Most of these modifications were absent from needles of 16-yr-old trees of the same provenance. Forest Sci. 20:88-90.

Repeated Prescribed Burning In Aspen, Donald A. Perala

Aspen Bibliography

No abstract provided.

Silviculture Of Southwestern Mixed Conifers And Aspen: The Status Of Our Knowledge, John R. Jones

Aspen Bibliography

In any field there is a periodic need to describe the status of available knowledge - to gather unpublished information and that which is scattered in various reports, and organize it in one set of covers for easy reference. That has been done here. Recommendations will often be somewhat tentative and less than precise. While there is much we still need to find out about the silvics and silviculture of mixed conifer land in the Southwest, there is much we already know.

Production Of Dry Matter From Aspen Stands Harvested On Short Rotations, A. B. Berry

Aspen Bibliography

Although the aspens (Populus tremuloides Michx. and P. grandidentata Michx.) are amongst the most widely distributed species in Canada and the United States, their utilization has been disproportionally small; in fact aspen was considered a weed species for many years.

The Forests Of Coles County, Illinois, David R. Sampson

Masters Theses

The purpose of this investigation has been to organize and compile a relevant body of information concerning the forested land within Coles County. The methods employed in conducting this study consisted of library research, field work, interviews, and the use of a questionnaire. The questionnaire was designed to determine how the forest landowners were utilizing their forests. A random sample of the forest landowners of each township within Coles County was conducted. In addition to the questionnaire, which was the primary source of detailed information relating to forest utilization, there were interviews with the county farm cooperative extension agent, the …

Big Game Habitat Improvement Burning Of Seral Brushfields In The Clearwater And Spokane River Drainages Of Idaho, Steve Yurich

Aspen Bibliography

No abstract provided.

The Role Of Pin Cherry (Prunus Pensylvanica L.) In The Maintenance Of Stability In Northern Hardwood Ecosystems, P. L. Marks

Aspen Bibliography

No abstract provided.

Location-Allocation Models For Establishing Facilities, David F. Gibson, John Rodenberg

Aspen Bibliography

Two models and accompanying computer programs are presented which were developed to locate facilities for the timber harvesting industry. Addressed is a case of the facility location-allocation problem. The optimum location and number of landings, facilities to which timber is transshipped, are determined so as to minimize a cost function. This function is composed of the following components: (1) cost of transporting material from its original location to a landing, (2) cost of establishing a landing (facility cost), and (3) cost of transporting material from the landings to some designated point termed the origin. Output of the computer programs is …

Selective Cutting To Release White Spruce In 75- To 100-Year-Old White Spruce-Trembling Aspen Stands, Saskatchewan, G.A. Steneker

Aspen Bibliography

No abstract provided.

Prescribed Burning In An Aspen-Mixed Hardwood Forest, Donald A. Perala

Aspen Bibliography

No abstract provided.

Weight-Volume Relationships Of Aspen And Winter-Cut Black Spruce Pulpwood In Northern Minnesota, D.C. Lothner, R.M. Marden, E. Kallio

Aspen Bibliography

No abstract provided.

Aspen [Populus Grandidentata] Volume Tables For Furniture-Type, Flat, 4/4-Inch Dimension, E.F. Landt

Aspen Bibliography

No abstract provided.

Forage Production And Utilization In A Sprayed Aspen Forest In Alberta, J.E. Hilton, A.W. Bailey

Aspen Bibliography

One of the primary concerns of many cattle ranchers in the aspen parkland area of Alberta and Saskatchewan is to increase forage production through the replacement of woody species by usable forage plants.

Relationships Among Aspen, Fire, And Ungulate Browsing In Jackson Hole, Wyoming, G.E. Gruell, L.L. Loope

Aspen Bibliography

No abstract provided.

Development Of Unpollinated Ovules Of Quaking Aspen, G.H. Fechner

Aspen Bibliography

The development of quaking aspen (Populus tremuloides Michx.) female flowers has been studied following wind pollination in the field (Nagaraj, 1952) and following forcing and controlled pollination in the laboratory (Winton, 1968; Fechner, 1972).

The Development Of Hypoxylon Canker Of Populus Tremuloides: Role Of Ascospores, Conidia, And Toxins, D.K. Bagga, E.B. Smalley

Aspen Bibliography

No abstract provided.

Range Survey In Teton County, Wyoming : Part Iv, Quaking Aspen, Alan A. Beetle

Aspen Bibliography

No abstract provided.

Soil Variation And Sampling Intensity Under Red Pine And Aspen In Minnesota, David H. Alban

Aspen Bibliography

No abstract provided.

Silviculture Of Central And Southern Rocky Mountain Forests : A Summary Of The Status Of Our Knowledge By Timber Types, Robert R. Alexander

Aspen Bibliography

No abstract provided.

Douglas-Fir Seed Volatile Oils In Seed Detection By Deer Mice, Millard S. Deusen

All Master's Theses

This study investigated the role of the volatile oils of Douglas-fir seeds in olfactory seed detection by deer mice. The removal of these volatile oils from the seed reduces the ability of the deer mice to detect the seeds.

A method is outlined for the removal of the volatile oils from the seeds as well as a method to purify the oils for possible identification and quantification of individual components.

The Effects Of Speed Of Web On The Coat Weight Variation In Blade Coating, Pak Kee Lee

Paper Engineering Senior Theses

Numerous works have been done on the investigation of coat weight variations by various researchers. The mechanism of the variation, in a given base stock, is explained by the two models - the hydrodynamic pressure which is a strong function of the web speed, and the visco-elastic or normal force. For a given coating color, viscosity is a function of the web speed which causes the shearing action to take place. Increasing the speed will cause an increase in hydrodynamic pressure as well as visco-elasticity, which tend to lift up the blade and thus a higher coat weight will be …

Effects Produced By Varying Types Of Drying On Starch Coated Paper Properties And Binder Migration, Mark J. Schaefer

Paper Engineering Senior Theses

The major concern of this report is binder migration and the factors which play a major role contributing to its presence. The major factors studied were coatings using varied drying methods, adhesive levels, % solids and types of starches.

Results obtained show that to obtain minimal migration coatings should be dried evenly throughout using infrared sources of heat.

Coating with different adhesive levels will vary optical and strength properties. Binder migration is more evident when using lower adhesive levels.

Coating at different % solids did not have any real significant effect in this study due to a very short span …