Life Sciences Commons^™

Dietary Protein Deficiency And Mycobacterium Bovis Bcg Affect Interleukin-2 Activity In Experimental Pulmonary Tuberculosis, David N. Mcmurray, C. L. Mintzer, R. A. Bartow, Rebecca D. Parr

Faculty Publications

Inbred strain 2 guinea pigs were vaccinated with Mycobacterium bovis BCG or were left unvaccinated. They were maintained for 6 weeks on defined, isocaloric diets containing either 30% (control animals) or 10% (animals receiving low protein) ovalbumin as the sole protein source. Animals were challenged by the respiratory route with a low dose of virulent M. tuberculosis H37Rv and killed 4 weeks later. Protein-malnourished animals were not protected by previous vaccination with BCG. Lymphocytes isolated from various tissues were tested in vitro for proliferative responses to mitogen (concanavalin A) and antigen (purified protein derivative [PPD]), production of interleukin-2 (IL-2), and …

Red-Cockaded Woodpecker Colony Status And Trends On The Angelina, Davy Crockett And Sabine National Forests, Richard N. Conner, D. Craig Rudolph

Faculty Publications

Abundant hardwood midstory, colony isolation, and habitat fragmentation are believed to be the causes for severe population declines of red-cockaded woodpeckers on three national forests in eastern Texas.

Forensic Forestry: Interpreting The Forest From Woodpeckers To Pine Cones, David Kulhavy

Faculty Publications

No abstract provided.

Man Overboard Maneuvers, Shirley H. M. Reekie

Faculty Publications

No abstract provided.

Capsizing: How To Prevent It/How To Recover From It, Shirley H. M. Reekie

Faculty Publications

No abstract provided.

Ultrastructure Of The Early Stages Of Infection Of Peanut Leaves By The Rust Fungus Puccinia Srachidis [Abstract], C. W. Mims, Josephine Taylor, E. A. Richardson

Faculty Publications

No abstract provided.

Furniture Manufacturing And Marketing In The ‘American Economic Transition, Steven H. Bullard

Faculty Publications

The Office of Technology Assessment recently prepared a 500 page report titled Technology and the American Economic Transition, Choices for the Future. OTA sees four major factors that are resulting in "economic transition" factors that will continue to transform the U.S. economy during the next 20 years: new technologies, new challenges from abroad, new resource constraints, and new values and tastes in U.S. consumer and labor markets.

New technologies, particularly in collecting and handling information, are expected to have long-term, pervasive economic and social impacts comparable to past U.S. economic transformations from major technologies such as automobiles and railroads. New …

Potential For Biological Control Of Dendroctonus And Ips Bark Beetles, David Kulhavy, Mitchel C. Miller

Faculty Publications

"The evolution of olfactory communication in bade beetles brought with it the parallel or coevolution of kairomonal systems in the natural enemy complexes. Entomophagous insects developed olfactory receptors and behavioral patterns responsive to insect and host-produced volatiles in the ecosystems of bark beetles. The phenomenon has both positive and negative implications for efforts to employ natural enemies in pest management."

Site/Stand Factors Influencing Nantucket Pine Tip Moth In Loblolly Pine Plantations, David Kulhavy, W. G. Ross, James R. Meeker, W. David Tracey

Faculty Publications

Tip moth infestation and loblolly pine growth were examined on sandy, loamy and clayey sites in 2-3 year old plantations. Infestations were greatest on loamy sites. Following fertilizer and herbicide applications, tip moth infestations were lowest on fertilized plots following application of phosphorus.

Ipps Spp. Natural Enemy Relationships In The Gulf Coastal States, David Kulhavy, R. A. Goyer, M A. Riley

Faculty Publications

No abstract provided.

Height. Growth Of Loblolly And Slash Pine Plantations In The Northern Post-Oak Belt Of Texas, M. Victor Bilan, R.S. Hansen

Faculty Publications

Age accounted for over 70% of the variation in tree height of 1O- to 44- year-old loblolly pine (Pinus taeda L.) and slash (Pinus elliottii Engelm.) plantations established on deep sands, moderate sands, and nonsandy soils in the Northern Post-Oak Belt of Texas. Climatic and edaphic factors, relating either directly or indirectly to the amount of moisture available for tree use, explained up to 17% of height growth variation. Height growth of the plantations was comparable to that of plantations growing in the pine-mixed hardwood forest cover type of East Texas. The Northern Post-Oak Belt of Texas is an area …

Death, Suffering, Predation, Animal Rights And Interpretation, Denis Hahn, Paul Risk

Faculty Publications

No abstract provided.

Furniture Production And The Forest Resources Of Southwest Mississippi, Steven H. Bullard

Faculty Publications

The furniture industry has become a dominant industry in Mississippi. Furniture producers employ over 22,000 people in the State and directly account for more than 10 percent of all manufacturing employment, up from just over 5 percent in 1963.

The U.S. Household Furniture Industry: Adapting To Changing Times., Brian A. Doherty, Steven H. Bullard

Faculty Publications

The U.S. wood household furniture industry has adapted to change in many ways in recent years. The industry has grown steadily since the 1982 recession, and has been shifting to the U.S . South and Southeast. Although California has also become prominent in furniture production, many recent factors indicate geographic shifts away from the state, particularly in wood furniture production. The household furniture industry has also adapted and continues to adapt to factors which have increased the globalization of trade in all products. Foreign competition has resulted in mergers and consolidation in the U.S. household furniture industry, and has also …

Age And Growth Of King Mackerel, Scomberomorus Cavalla, From The Atlantic Coast Of The United States, Mark R. Collins, David J. Schmidt, C. Wayne Waltz, James L. Pinckney

Faculty Publications

Whole sagittae from 683 and sectioned sagittae from 773 "adult" (age> 0 ; 437-1.310 mm FL), and lapilli from 29 larval (2-7 mm SL) and 69 young-of-the-year (79-320 mm FL) king mackerel, were examined. All fish were from waters off the Atlantic coast of the southeastern United States (Cape Canaveral, Florida to Cape Fear. North Carolina). Back-calculated lengths at ages and von Bertalanffy growth equations were calculated from both whole and sectioned sagittae. Ages determined from sectioned sagittae were significantly greater than ages determined from whole sagittae, and the magnitude of the difference increased with age (from sections). Rings on …

Organ-Specific And Development Regulation Of The Nopaline Synthase Promoter In Transgenic Tobacco Plants, Gynheung An, Michael A. Costa, Amitava Mitra, Sam-Bong Ha, László Márton

Faculty Publications

Control regions of the nopaline synthase (nos) gene have been widely used to express foreign genes in plants since the promoter is active in a wide variety of plant tissues. We report here the characteristics of the nos promoter activity in transgenic tobacco (Nicotiana tabacum) plants at various developmental stages. The promoter was highly active in the lower parts of a plant and gradually decreased in the upper parts. This vertical gradient was maintained throughout plant growth until the flowering stage when the overall promoter strength decreased significantly in the vegetative organs. However, in various flower …

Sequence Of The Psba Gene From Wild Type Triazin-Resistant Nicotiana Plumbaginifolia, Anikó Páy, Marvin A. Smith, Ferenc Nagy, László Márton

Faculty Publications

No abstract provided.

The Economics Of Public Assistance For Private Nonindustrial Timber Sales In Mississippi, Steven H. Bullard, Robert J. Moulton

Faculty Publications

The U.S. South has many forestry advantages, yet public and private efforts are increasingly needed to encourage reforestation and active forest management in the region. The review draft of "The South's Fourth Forest, Alternatives for the Future" (USDA Forest Service 1987a) highlights the urgent need for increased efforts to ensure future timber availability:

... projections of resource change mean that the South is facing a future of rising stumpage and roundwood product prices, much lower rates of growth in timber harvests, and declines in employment in the forest industries" (p. xxxv).

The report also highlights great opportunities to increase forest …

Forestland Controlled By Schools Of Forestry: Characteristics And Management, Charles E. Burkhardt, Thomas J. Straka, Steven H. Bullard

Faculty Publications

Most forestry schools control forestland. Traditionally, the school forest has served as a laboratory for field instruction and research. This article reports on a 1985-86 survey of the 1 candidate and 46 accredited forestry schools in the United States on the ownership, objectives, and management of school forests.

The survey's purpose was to determine the extent and distribution of forestland ownership by forestry schools. The survey addressed how the forestry schools gained control of the land; the objectives of forest management, and how important the school forest was to the teaching, research, and service functions of the university. The importance …

Fusiform Rust Trends In East Texas: 1969-1987, J. David Lenhart, W. T. Mcgrath, Terry L. Hackett

Faculty Publications

Five surveys of pine plantations in East Texas over an 18-year period (1969-1987) indicated that fusiform rust (Cronartium quercuum [Berk.] Miyabe ex Shirai f. sp. fusiforme Birdsall and Snow) infection rates have increased to current levels of about 50% on slash pine (Pinus elliottii Engelm.) and are continuing to increase on loblolly pine (Pinus taeda L.) to 10-15% levels. South. J. Appl. For. 12(4):259-261

Southern Pine Beetle And Fire In Wilderness Areas: The Kisatchie Hills Wilderness, Kisatchie National Forest, David Kulhavy, William G. Ross

Faculty Publications

Southern pine beetle infestations affect wilderness areas in the southeastern United States. In the Kisatchie Hills Wilderness area in Louisiana, a southern pine 'beetle outbreak resulted in widespread destruction of longleaf pine. Nest trees of the red-cockaded woodpecker, an endangered species, also were killed. Following the epidemic, a fire fueled by beetle-killed pines went through the wilderness. Forest structure, species composition, successional processes and general ecosystem function were substantially altered as a result of these two related disturbances. Most wilderness areas containing southern pines were managed for pine timber before being designated as wilderness. Bark beetle outbreaks are a predictable …

Present Net Worth And Internal Rate Of Return: A Note On Equivalence In Use, K. A. Blatner, Steven H. Bullard

Faculty Publications

Present net worth and internal rate of return are frequently used for ranking investment alternatives. The relative merits and limitations of the two criteria are discussed at length in numerous journal articles and texts. For analysts wishing to present consistent project comparisons, the issue is not which criterion is superior, but when are they equivalent. In this article, conditions for equivalence in use are outlined under alternative assumptions. Although the conditions appear complex, they are not unduly restrictive.

The Mississippi Furniture Industry And Its Use Of Wood-Based Materials, Steven H. Bullard, Brian A. Doherty, Paul H. Short

Faculty Publications

Furniture manufacturing is one of the most important industries in Mississippi; the industry's phenomenal growth and current high levels of production and employment have recently been widely recognized and publicized. The Mississippi Economic Council (1988), for example, recently labeled the state "The New Furniture Capital of America;' and Northeast Mississippi was recently described as a "booming region'' that "wants to be the Furniture Capital of America'' (Evans 1987). The present report characterizes important aspects of Mississippi's furniture industry, including its development and relative importance within the state and within the U.S., and assesses current information on the availability and use …

Structure And Funding Of State-Level Forestry Cost-Share Programs, Steven H. Bullard, Thomas J. Straka

Faculty Publications

State cost-share programs have become a popular means of encouraging forest management activities on private nonindustrial lands. Programs have been started in 13 states most with extensive forest industries and high percentages of private nonindustrial land ownership. Cost-shares are a direct economic incentive and are used to encourage such specific practices as reforestation after harvest. Although the need for forestry cost-share programs has been questioned in the past, accomplishments have been high and programs have been effective in increasing reforestation on private lands.

Fuel Weight Predictions Equations For Understory Woody Plants In Eastern Texas, Hershel C. Reeves, J. David Lenhart

Faculty Publications

Equations were developed for predicting total above-ground fuel weight (ovendry in grams) of 19 understory woody plant species in eastern Texas forests, using logarithmic equations and stem basal diameter. Prediction of woody fuel weight can be used to enhance fire intensity estimates under varying fuel moisture and weather conditions. Key words: biomass, fuels; understory species; prediction equations.

Impact Of New Technology On Timber Harvesting Costs: Evaluation Methods And Literature, F. W. Cubbage, B. J. Stokes, Steven H. Bullard

Faculty Publications

Timber harvesting and transport are crucial components of the cost of delivered wood to forest products processing facilities. In fact, harvesting and delivering wood often costs more than the entire costs of growing wood until harvest. As such, timber harvesting research and development are important. Additionally, research in this area is worthwhile because efficiency gains, cost improvements, and environmental benefits due to timber harvesting research can be realized in a very short time period, rather than the decades-long wait required for research investments in timber growing.

This paper provides an overview of the means of measuring the impact of new …

Osmophores Of Stanhopea (Orchidaeceae), William Louis Stern, Kenneth J. Curry, Alec M. Pridgeon

Faculty Publications

Species of the Neotropical orchid genus Stanhopea produce a fragrance comprising terpenoids and aromatics which attracts euglossine bee pollinators. The secretory tissue, called an osmo- phore, is located in the adaxial region of a sac formed near the proximal portion of the floral lip. This region is easily recognized in Stanhopea oculata and S. wardii because it is papillate. The osmophore in these two species includes all the cells of the papillae and those directly below, that grade into fundamental tissue. Osmophore cells are more densely cytoplasmic than cells in the adjacent tissue. Numerous amyloplasts and mitochondria are seen in …

Initiation Of Terpenoid Synthesis In Osmophores Of Stanhopea Anfracta (Orchidaceae): A Cytochemical Study, Kenneth J. Curry

Faculty Publications

The terpenoid component of the osmophore fragrance in Stanhopea species is composed of isoprene units synthesized via the mevalonic acid pathway. Localization of hydroxymethylglutaryl CoA synthase in the pathway was achieved using a technique which elicits the formation of an electron- dense precipitate of uranyl ferrocyanide at the point where an acetyl group from acetyl CoA is transferred to acetoacetyl CoA, releasing free CoA-SH. Applying this technique to cells of the osmophore of S. anfracta resulted in a precipitate between the inner and outer mitochondrial membranes, in the smooth endoplasmic reticulum, and, to a lesser extent, on the outer surface …

Forval: A Computer Program For Forest Valuation, Steven H. Bullard, Thomas J. Straka, T. G. Matney

Faculty Publications

FORVAL (FORest VALuation) is a computer program for cash-flow analysis of forestry investments. The FORTRAN 77 program is available from the MAFES Forestry Department for Data General computers using the Advanced Operating System with Virtual Storage, and for IBM-compatible personal computers (send letter of request and 51!.-inch diskette to P.O. Drawer FR, Mississippi State, MS 39762).

Tree Content And Taper Functions For Loblolly And Slash Pine Trees Planted On Non-Old-Fields In East Texas, J. David Lenhart, Terry L. Hackett, Charlie J. Laman, Thomas J. Wiswell, Jock A. Blackard

Faculty Publications

Equations are presented to estimate total or partial stem content in cubic feet and pounds (green or dry) for loblolly pine (Pinus taeda L.) and slash pine (Pinus elliotti Engelm.) trees planted on non-old-fields in East Texas. Equations are included to estimate the content of the complete tree (stem and branches). In addition, a set of compatible stem taper functions are described. South. j. Appl. For. 11(3):147-151