Life Sciences Commons^™

Genetic Control Of Sex Ratio, Earliness And Frequency Of Flowering In Populus Tremuloides, F.A. Valentine

Aspen Bibliography

No abstract provided.

An Aid To Identifying Aspen Diseases Frequently Encountered In The Southwest, James W. Walters

Aspen Bibliography

No abstract provided.

Forest Ecology Of The Alaska Taiga, L.A. Viereck

Aspen Bibliography

No abstract provided.

Deterioration Of Aspen Clones In The Middle Rocky Mountains, George A. Schier

Aspen Bibliography

The frequent failure of deteriorating aspen (Populus tremuloides Michx.) clones to regenerate vegetatively by root suckers was studied by comparing the suckering capacity of these clones with adjacent healthy clones. Sucker production from root cuttings was used to evaluate the suckering capacity of a clone. Scarcity of regeneration in deteriorating clones was found to be unrelated to the ability of roots to sucker. A hypothesis based on the apical dominance phenomenon is presented to account for the low numbers of suckers produced by deteriorating clones. Stand data, sucker densities, and root ages of the clones are compared. Aspects of aspen …

Estimating Aspen Volume And Weight For Individual Trees, Diameter Classes, Or Entire Stands, Bryce E. Schlaegel

Aspen Bibliography

No abstract provided.

Development Of Some Young Aspen Stands In Arizona, J.R. Jones, David P. Trujillo

Aspen Bibliography

No abstract provided.

Height-Growth Comparisons Of Some Quaking Aspen Clones In Arizona, John R. Jones, David P. Trujillo

Aspen Bibliography

No abstract provided.

Wounds And Canker Diseases On Western Aspen [Populus Tremuloides], Thomas E. Hinds, R.G. Krebill

Aspen Bibliography

No abstract provided.

A Preliminary Analysis Of Short-Rotation Aspen Management, Alan R. Ek, J.D. Brodie

Aspen Bibliography

No abstract provided.

Wood And Wood-Based Residues In Animal Feeds, Andrew J. Baker, Merril A. Millett, Larry S. Satter

Aspen Bibliography

Cellulose is the most abundant, naturally renewable material on earth. It, and hemicellulose, make up about 70% of the dry weight of shrubs and trees. The cellulose of woody plants, however, is largely unavailable to ruminants because of the highly crystalline nature of the cellulose molecule and the existence of a lignin-carbohydrate complex. If convenient ways can be found to enhance the availability of wood cellulose to enzymatic or microbiological systems, wood residues could provide an additional renewable energy feed supply for a world that can maintain no contingency reserve of feedstuffs. It would permit utilization of the large quantities …

Quaking Aspen: Silvics And Management In The Lake States, K.A. Brinkman, E.I. Roe

Aspen Bibliography

No abstract provided.

Vegetation Study Of A Terrace Forest In Clark County, Illinois, Randy Warren Nyboer

Masters Theses

No abstract provided.

Nepal Studies Association Newsletter, Issue 7, Nepal Studies Association, John Scholz

Nepal Studies Association Newsletter

No abstract provided.

Ozonation Of Secondary Effluent For Color Removal, Michael Patton

Paper Engineering Senior Theses

The purpose of this study was to determine the effect of various ozone concentrations when applied to secondary kraft effluent in regards to color removal. The influence of effluent temperature upon the color removal capabilities of ozone was also investigated to determine the optimal ozone reaction temperature or the temperature which would result in the greatest color reduction at a given ozone concentration.

The study was conducted by injecting ozone at three different concentrations of 20, 30 and 40 mg/liter into a temperature controlled column of secondary kraft effluent obtained from S.D. Warren Company in Muskegon, Michigan. The temperature was …

Poplars In The Prairie Provinces, G. A. Steneker

Aspen Bibliography

The story of poplars is an unusual tale - a rag to riches story. The poplar has gone from weed to popular resource, because today this abundant species is being regarded by many as a possible source of newsprint, tissue, plywood and even livestock feed. Poplars provide choice winter and summer food for white-tailed deer and grouse, and the first prairie homes were built with and heated by poplar logs. Often considered a weed, the poplars of the Prairies are now facing a brighter future.

Oral History Interview: James G. Matthews, James G. Matthews

0064: Marshall University Oral History Collection

James G. Matthews was a jack-of-all-trades. He worked as a coal miner for James C. Coal Company, worked for United Fuel Gas Company, the Nickel Plant, and as a mail courier. He also performed as part of a singing quartet. Mr. Matthews was born on May 30, 1902. He grew up on a farm near East Lynn, WV. After the death of his mother, Mr. Matthews attended elementary school on a part-time basis in order to work on the family farm. In the audio clip provided, Mr. Matthews discusses alcohol consumption and moonshine stills in East Lynn. During his interview, …

Radial Distribution Of Corticular Photosynthate In Stems Of Bigtooth And Trembling Aspen, Robert K. Shepherd, Jr.

Aspen Bibliography

No abstract provided.

Nepal Studies Association Newsletter, Issue 6, Nepal Studies Association, John Scholz

Nepal Studies Association Newsletter

No abstract provided.

An Analysis Of Counties And Municipalities Which Did Not Participate In The Land And Water Conservation Fund Act Of 1965 Utah: 1965-1970, Lyle A. Bair

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Characteristics of nonparticipating Utah counties and municipalities in the Land and Water Conservation Fund Act of 1965 were studied. Specific objectives studied were: (1) program awareness, (2) program understanding, and (3) reasons for nonparticipation from 1965 to 1970.

A telephone survey was conducted of all nonparticipating counties, all nonparticipating municipalities larger than 2500 population and a simple random sampling of municipalities smaller than 2500 population. Results were compared on a governmental unit and regional basis.

The survey determined that, as a whole, less than 45 percent of nonparticipating Utah counties and municipalities were aware of the program. The greatest awareness …

Effects Of Land Disposal Of Pulp Mill Effluents On Plant Nutrient Uptake And Element Balance, Joseph B. Schwarzback

Electronic Theses and Dissertations

An analysis of the soil and plant tissues was undertaken to ascertain the effect that land irrigation with pulp mill effluent has on nutrient uptake and element balance of tree seedlings. Results show that the effluent significantly increased the sodium content of both soil and tissue; however, these levels fell far below the level necessary to become detrimental to plant life, soil chemistry and soil structure. There was evidence that the increase of elements from the effluent provided positive effects in growth and plant health. There was no evidence of sodium toxicity or calcium starvation. Evidence clearly points out the …

Texas Forestry Paper No. 24, Ray R. Hicks Jr.

Texas Forestry Papers, No. 1-29, 1970-1976

"Comparisons of seedlings from east texas loblolly, shortleaf and suspected hybrid pines"

Texas Forestry Paper No. 25, Leonard F. Burkart, Jorge Cano-Capri

Texas Forestry Papers, No. 1-29, 1970-1976

"Tension wood in southern red oak quercus falcata michx."

Texas Forestry Paper No. 26, Robert D. Baker, David V. Smith

Texas Forestry Papers, No. 1-29, 1970-1976

"Aerial photograph use in industrial forest management in the south, 1970 and 1974"

Effects Of Surface Sizing Agents On Bod Of Recycled Papers, Lynn Berry

Paper Engineering Senior Theses

Surface sizing agents can be major contributors to a mill's BOD loading. A 2% solids application of polyvinyl alcohol will give little or no BOD as compared to a high BOD resulting from a 8% solids application of anionic and cationic starch. The use of polyvinyl alcohol will give equivalent or better strength properties along with better sizing and high wax picks with only about one-half to three-quarters of a pound pick up per 3300 ft². High sizing values were achieved with the starches but at higher pick up levels. Polyvinyl alcohol could be best used in combination …

"The Evaluation Of Bacterial Cellulose From Acetobacter Xylinum As A Potential Papermaking Material", Thomas R. Arnson

Paper Engineering Senior Theses

Bacterial cellulose was biosynthesized by Acetobacter xylinum on an enriched growth medium of glucose, yeast extract and KH₂PO₄. The bacterial cellulose fibers were found to be about one-fourth the size of an average softwood fiber.

Pulp and paper total mill effluents and alfalfa extract were exchanged for the glucose and the yeast extract in the growth medium to see if they could substitute for these materials. Kraft and NSSC total mill effluents were found to substitute for the glucose. The alfalfa extract was found to be a better and cheaper material than the yeast extract. Acetobacter …

No-Sulfur Semi-Chemical Pulping With Na2Co3 And Naoh, James P. Hanson

Paper Engineering Senior Theses

Na₂CO₃/NaOH cooking liquors were evaluated as possible pulping agents for the production of semichemical pulp for use in corrugating medium. Optimum ratios of Na₂CO₃/NaOH were found to be 2/1 to 4/1. Pulp produced with ratios within these figures were equal to tensile and concora and higher in yield when compared to NSSC pulp made at the same temperature, time and Na₂O/chip ratio. By increasing either the time or the Na₂O, higher tensile and concora tests were obtained but with a slight sacrifice in yield. Na₂CO_{3 …}

Linear Programming As A Technique For Least Cost Furnish Analysis, James B. Keeler

Paper Engineering Senior Theses

This study was a limited laboratory scale investigation of whether or not linear programming was a viable technique for determining the least cost furnish blends. It is original in that it used actual laboratory developed data for input to determine the linear programming model, and the results were actually produced in the laboratory to see if constraints were met. The materials used were a bleached hardwood, a bleached softwood, tab cards, clay and TiO₂. It was found that requirements of linearity and averaging inherent in the linear programming caused results which were not as accurate as needed. However, …

Investigation Of The Static Mixer For Improved Heat Transfer To Black Liquors, Bruce J. Redmond

Paper Engineering Senior Theses

The objective of this experiment was to determine an improved method by which evaporation of kraft black liquors to the 50 to 65% total solids level could be sufficiently performed in multiple effect evaporators. This would eliminate the need of the highly malordorous direct contact evaporators which are presently used. Heat transfer characteristics of the Kenics Static Mixer were examined to determine if its application in multiple effect evaporator tubes would possibly reduce viscous liquor film layers which now hinder heat transfer. A single pass heat exchange unit that allowed removal of the inner tube and its replacement by a …

Use Of Brazilian Clays For Coating Formulations, Rubens Pellegrini

Paper Engineering Senior Theses

Foreword

The massive effort of the Brazilian Government to develop a stronger and more competitive industry has boosted the production of pulp and paper up to six times its level of 1969.

The increasing demand for coated papers has forced the industry to look for new domestic sources of clay and to try to use the internally available product. Besides the undesirable situation of dependency upon a source many thousands of miles way, the difference in cost is the most appealing factor of all.

Today the three largest pulp and paper producers in Brazil have their own mines to assure …

The Effect Of Filler Type And Level On Inframike And Moistron Moisture Measurement And Accuray Basis Weight Measurement, Robert G. Tomich

Paper Engineering Senior Theses

The following report is a study on the effects of filler type and level on the Inframike, Moistron and Accuray Basis Weight. Specifically, the effects of clay talc and Ti0₂ were investigated at 5%, 10·%, and 15% addition levels.

The Inframike was affected linearly by all three filters. The Moistron was not affected by talc and clay, but it was affected in a non-uniform manner by Ti0₂. The Accuray was not affected by clay and it was affected linearly by talc and Ti0₂.