Life Sciences Commons^™

The Effect Of Various Concentrations Of Alkali With The Adsorption Of Calcium Ions Onto Oleic Acid, Thomas J. Mcapline

Paper Engineering Senior Theses

The purpose of this thesis was to find an optimum condition for the formation of the precipitated calcium soaps. The system investigated included the range of alkali addition of 0 to 1.2 pounds per one hundred gallons (#/100 gal.). A direct relationship between the adsorption with an increasing alkali concentration to a maximum of 145 parts per million calcium ion adsorbed to 833.5 ppm oleic acid when .225 (#/100 gal.) is applied. It shows that any higher concentration of an alkali will level out the maximum calcium adsorption to approximately 140 ppm.

It was also found that the alkali demand …

The Effects Of Ph On Alkali-Swellable Latex Binder Coating Systems, Larry N. Justen

Paper Engineering Senior Theses

Introduction

In recent years there has been a growing demand for the use of synthetic latexes as sole binders in coating formulations. This had been brought about by the shortage of supply and changing prices of natural binders like casein and protein. Synthetic latex binders require no cooking; this increased energy saving over starch becomes more important as fuel prices rise. Synthetic latex systems are easy to handle and they can be combined easily to fit different requirements.

Most synthetic latex systems need a thickener and water retention aid to achieve the right viscosity and flow properties. The new alkali-swellable …

Aspects Of Some Compacted Campground Ameliorating Practices, Keith Foster

Electronic Theses and Dissertations

The purpose of this study was to determine if the direct mechanical manipulation of compacted campground soils, with and without the addition of organic materials and the planting of grasses, had any long lasting effect on the amelioration of these deteriorated campsites. An attempt was also made to determine the natural recovery time for East Texas sandy loam soils using the campground closure method. Closure or partial (seasonal) closure of campsites reduced compaction to an acceptable level in three years. Roto-tilling alone was the least effective treatment. Roto-tilling and the addition of bark or chips to maintain the loose soil …

Nepal Studies Association Bulletin, No. 11, Nepal Studies Association, Donald A. Messerschmidt

Nepal Studies Association Newsletter

No abstract provided.

Review: Management Science Applications To Leisure-Time Operations, Perry J. Brown

Forest Management Faculty Publications

Book review for Management Science Applications to Leisure-Time Operations by Shaul P. Ladany, ed. Amsterdam: North Holland Publishing Company; 1975.

Effect Of Recycling Cooking Liquor And Eliminating The Washing Stage During Chemical Deinking, Thomas H. Ollila

Paper Engineering Senior Theses

The purpose of this investigation was two-fold--first to determine what effects recycling the cooking liquor in varying percentages had upon the final pulp quality, and second to find out what effect eliminating the washing stage had upon the final pulp. The results are not as definite as would have been desired due to variation in the data. Generally, the results showed recycling the cooking liquor left more fines in the pulp resulting in higher tensile, burst, and fold strength. Eliminating the washing stage left more ink particles, pigments, and fines in the pulp which resulted in higher yields, better opacity, …

Structural Comparisons Of Four Plant Communities In The Great Dismal Swamp, Claire Virginia Dabel

Biological Sciences Theses & Dissertations

Four plant communities in the Great Dismal Swamp, located on the coastal plain in southeastern Virginia, were sampled and estimates of density, basal area and aboveground standing crop biomass were determined, Biomass was estimated as 229,800 kg/ha in the Chamaecyparis thyoides community and as 344,500 kg/ha in the Taxodium distichum community. Biomass for the two hardwood communities, the

Acer-Nyssa community and mixed hardwood (Quercus-Nyssa-Acer-Liriodendron-Liquidamber) community was estimated as 195,700 kg/ha and 194,600 kg/ha respectively and did not differ significantly (P

Comparison Of Urea Formaldehyde, Melamine Formaldehyde, Glyoxal And Latex In Improving The Water Resistance Of The Starch Coatings, Tran Trong Kim

Paper Engineering Senior Theses

Several coatings colors were prepared and applied. The coated sheets were tested with great emphasis on keeping the conditions constant throughout the course of the experimental work. The study utilized several types of insolubilizers: urea formaldehyde, melamine formaldehyde, glyoxal and latex. Two types of starches were also used: regular and cationic.

Results showed the importance of drying on wet rub development of both urea and malamine formaldehyde as compared to latex and glyoxal. Results also proved the superiority of using insolubilizer additions with cationic starch rather than regular starch.

Glyoxal and latex were superior choices to urea and malamine formaldehyde, …

Texas Forestry Paper No. 27, J. David Lenhart, David M. Hyink

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

"Number of 8.7 - foot veneer bolts in loblolly pine trees of old-field plantations in the interior west gulf coastal plain"

Texas Forestry Paper No. 28, J. J. Stransky, L. K. Halis, E. S. Nixon

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

"Plants following timber harvest: importance to songbirds"

Texas Forestry Paper No. 29, Ellis V. Hunt Jr., Edwin L. Miller

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

"Plant cover and soil erosion following site preparation and planting in east texas"

Analysis Of The Presettlement Forests Of The Unglaciated Portions Of Southern Illinois, Lawrence A. Leitner

All-Inclusive List of Electronic Theses and Dissertations

This research used the data on witness trees found in the surveyors' records of the General Land Office surveys of 1805-1815 as the basis for studying the primeval forests of unglaciated southern Illinois. Via computer, the random pairs and closest individual methods of plotless sampling were used to develop stand attributes tables, with soil association boundaries defining the limits of forest stands. A vegetation map was developed from these stands. Four major forest types were delineated: Upland Oak, nixed Hardwoods, Swamp Forest, and Floodplain Forest. The Upland Oak Forest, with lowest density (175.9/ha or 71.2/acre) and basal area (21.3 rn …

A Hydrology Temperature Model For A Small Mountain Watershed, Charles Wilson Pettee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A small mountain watershed located in the Wasatch Mountains of North Central Utah is calibrated to a lumped, deterministic simulation model which is capable of predicting daily streamflow and stream temperature. The input information required is daily precipitation and maximum and minimum air temperatures.

In this study, the area of watershed modeling is reviewed in general and as it specifically applies to the study watershed.

The degree of correlation between observed data and predicted output is only mediocre. The model remains unverified for streamflow prediction and is poorly verified for stream temperature.

Nepal Studies Association Bulletin, No. 10, Nepal Studies Association, Donald A. Messerschmidt

Nepal Studies Association Newsletter

No abstract provided.

Lucille Vinyard Journal 1976, Lucille Vinyard

Lucille Vinyard Journal Collection

No abstract provided.

Protecting The Appalachian Trail In Maine, University Of Maine At Portland - Gorham

Maine Collection

Protecting the Appalachian Trail In Maine

A Handbook Compiled by the Allagash Environmental Institute, Center for Research & Advanced Study, University of Maine Portland - Gorham, 1976.

Directed & edited by Patricia Solotaire.

Contents: The Project Itself / The History of Trail Agreements in Maine / The Landowner's Duty to Hikers and Campers / History and Description of the Statutory Protection of the Appalachian Trail / An Overview of Tax Considerations / Land Protection Devices / Using the Information / Bibliography / Footnotes / Appendices

Type Variability And Succession In Rocky Mountain Aspen, Walter F. Mueggler

Aspen Bibliography

Most of the 6 million acres of aspen lands in the West occur in the Central Rocky Mountains. The ability of western aspen to occupy a wide diversity of sites, the great genetic diversity among clones, and the role of aspen as both a dominant successional and stable species severely complicate management. Such ecological and genetic diversity results in considerable variability in both resource production and potential response to management. Progress in classifying the ecological variability of aspen lands is slow; useful partitioning of genetic diversity is nil.

Aeration, Phosphorous, And Lime Affect Nitrogen Mineralization In Imperfectly Drained Forest Soils, M. S. Bhangoo, D. J. Albritton, Eugene Shoulders

Journal of the Arkansas Academy of Science

Unamended, limed, and phosphorus-enriched Caddo, Beauregard, and Wrightsville silt loams (A1 horizon) were incubated for six months at room temperature under two moisture regimes. At field capacity, unamended soils lost 0.7% of organic matter and converted 166 ppm of organic nitrogen to inorganic forms. Ninety-five percent of the converted nitrogen was present as N₄-H or NO₃-N. Limed and phosphorus-treated soils at field capacity lost about 1.0% of organic matter and accumulated 191 to 201 ppm of inorganic nitrogen. Submerged soils lost very little organic matter and accumulated only 24 to 28 ppm of inorganic nitrogen. There was a loss of …

Effects Of Six Insecticides On Emergence Of Some Parasites And Predators From Southern Pine Beetle Infested Trees, Jack E. Coster, I. R. Ragenovich

Faculty Publications

Six insecticides (lindane, phosmet, diazinon, acephate, propoxur, and carbaryl) were tested to determine effects on predators and parasites associated with southern pine beetle, Dendroctonus frontalis Zimmerman, in eastern Texas. Eleven species of parasites and predators emerged from insecticide-treated pine bolts. The most prevalent species was Coeloides pissodis followed by Medetera lJistriata, Roptrocerus xylophagorum, Corticeus glaber, and Thanasimus dulJius. In terms of emergence from treated pines, only diazinon significantly reduced the total number of associated insects. They were 65% fewer in number following diazinon treatment. The insecticides differed in their effects on the 11 associates. C. glaber, C. pissodis, M. lJistriata, …

Endoparasitic Nematodes Of Ips Bark Beetles In Eastern Texas, Jack E. Coster, William Hoffard

Faculty Publications

East Texas Ips species contained 4 specific internal nematodes; I. avulsus (Eichhoff) were infected with Parasitylenchus avulsi Massey, I. grandicollis (Eichhoff) with Contortylenchus grandicolli (Massey) Rlihm, and I. calligraphus (Germar) with Contortylenchus elongatus (Massey) Nickle and Parasitaphelenchus sp. In all 3 bark beetles, infection peaked in July and August when 50-58% of adults from naturally attacked pine trees contained nematodes. Infection levels declined to 20-30% during January and February. Infected I. grandicollis and I. avulsus adults appeared lighter in color than noninfected adults. Nematode infection apparently delayed emergence of both sexes of I. grandicollis and females of I. avulsus. In …

Aspen Harvesting And Reproduction, John R. Jones

Aspen Bibliography

No abstract provided.

Spring Burning In An Aspen-Conifer Stand For Maintenance Of Moose Habitat, West Boulder River, Montana, Floyd A. Gordon

Aspen Bibliography

No abstract provided.

Perspective On Particleboards From Populus Spp., Robert L. Geimer

Aspen Bibliography

Populus species particleboards have a high compression ratio resulting in high bending strength. Their low-porosity edges, advantageous in furniture manufacture, dictate close moisture content control in production.

Aspen roundwood is the primary raw material for composition structural sheathing. Populus utilization will likely increase as material sources expand and as new product develop.

Physiological And Environmental Factors Controlling Vegetative Regeneration Of Aspen, George A. Schier

Aspen Bibliography

No abstract provided.

Classification Of Quaking Aspen Stands In The Black Hills And Bear Lodge Mountains, K.E. Severson, J.F. Thilenius

Aspen Bibliography

No abstract provided.

Preliminary Forest Habitat-Types Of Northwestern Utah And Adjacent Idaho, Jan A. Henderson, R.L. Mauk, D.L. Anderson, R. Ketchie, P. Lawton, S. Simon, R.H. Sperger, R.W. Young, A. Youngblood

Aspen Bibliography

Following pioneering work in northern Idaho and eastern Washington by Daubenmire 1952, 1968, and later in Montana, Idaho, Wyoming and Utah by Pfister et al., 1974, Steele et al., 1974, 1975, Cooper 1975, Reed 1969, Ream 1964, and Pfister 1972, work was begun to finish identifying and naming the forest habitat types of Utah. Preliminary work had been done by Pfister (1972) on the subalpine fir and engelmann spruce series. This current work covers all forest land in Utah and adjacent southern Idaho including that covered by Pfister.

Field work in northewestern Utah and adjacent Idaho began in …

Mechanized Timber Harvesting To Improve Ruffed Grouse Habitat, Sigurd J. Dolgaard, Gordon W. Gullion, Jeffry C. Haas

Aspen Bibliography

Some 40 percent of Minnesota's 17 million acres of commercial forest land is in small private ownerships (Stone 1966:6); often, maintenance of wildlife is a prominent owner objective.

Guidelines For Decision Making: A Report Based On A Study Conducted On The Routt National Forest Rocky Mountain Region, David R. Betters

Aspen Bibliography

No abstract provided.

Description Of Aspen Communities And Related Wildlife Populations In The Phosphate Strip Mining Area Of Southeastern, Idaho, David S. Winn

Aspen Bibliography

No abstract provided.

Aspen Forest After Harvest, Norbert V. Debyle

Aspen Bibliography

Aspen is a unique forest tree with respect to regeneration. It produces abundant root suckers, up to 40,000 per acre are common, after clearcutting or fire removes the parent stand. The rapidly growing sucker stand competes well with other vegetation, but is susceptible to destruction by excessive ungulate browsing. Clearcut areas produce more streamflow and more growth on shrubs and herbaceous vegetation than does the uncut forest. The patchwork of age classes that results from even-age management optimizes wildlife habitat requirements for several desired species.