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Articles 1 - 18 of 18
Full-Text Articles in Life Sciences
Pattern Of Disease After Murine Hepatitis Virus Strain 3 Infection Correlates With Macrophage Activation And Not Viral Replication, M. Pope, O. Rotstein, E. Cole, S. Sinclair, Rebecca D. Parr, B. Cruz, R. Fingerote, S. Chung, R. Gorczynski, L. Fung, J. Leibowitz, Y. S. Rao, G. Levy
Pattern Of Disease After Murine Hepatitis Virus Strain 3 Infection Correlates With Macrophage Activation And Not Viral Replication, M. Pope, O. Rotstein, E. Cole, S. Sinclair, Rebecca D. Parr, B. Cruz, R. Fingerote, S. Chung, R. Gorczynski, L. Fung, J. Leibowitz, Y. S. Rao, G. Levy
Faculty Publications
Murine hepatitis virus strain (MHV-3) produces a strain-dependent pattern of disease which has been used as a model for fulminant viral hepatitis. This study was undertaken to examine whether there was a correlation between macrophage activation and susceptibility or resistance to MHV-3 infection. Peritoneal macrophages were isolated from resistant A/J and susceptible BALB/cJ mice and, following stimulation with MHV-3 or lipopolysaccharide (LPS), analyzed for transcription of mRNA and production of interleukin-1 (IL-1), tumor necrosis factor alpha (TNF-alpha), transforming growth factor beta (TGF-beta), mouse fibrinogen-like protein (musfiblp), tissue factor (TF), leukotriene B4, and prostaglandin E2 (PGE2). Macrophages from BALB/cJ mice produced …
Geodemographic Approaches To Identifying U.S. Furniture Markets, Frank M. Howell, Larry Doolittle, Jarryl B. Ritchie, Melissa A. Barfield, Steven H. Bullard
Geodemographic Approaches To Identifying U.S. Furniture Markets, Frank M. Howell, Larry Doolittle, Jarryl B. Ritchie, Melissa A. Barfield, Steven H. Bullard
Faculty Publications
Demand for household furniture is shaped by a multitude of dynamic forces, from the global economic situation to subtle changes in consumer preferences. Correspondingly, the academic disciplines employed to identify, analyze, and predict these forces range from macroeconomics to psychology, and include demography, sociology, geography, and several applied fields. The demographic characteristics of furniture consumers has been a particularly popular area of research, primarily because of the availability of secondary data from various public · agencies. Some of this research is reviewed in a subsequent section of this report.
Impacts Of Seasonality And Nutrients On Microbial Mat Community Structure And Function, James L. Pinckney, Hans W. Paerl, M. Fitzpatrick
Impacts Of Seasonality And Nutrients On Microbial Mat Community Structure And Function, James L. Pinckney, Hans W. Paerl, M. Fitzpatrick
Faculty Publications
To understand the mechanisms responsible for seasonal fluctuations in growth and N2 fixation in intertidal microbial mat communities, we quantified seasonal changes in mat community composition, related these changes to diel and seasonal N2 fixation rates, and evaluated community responses (growth, N2fixation, composition) to long-term (22 d) nutrient addition bioassays. A temperate intertidal cyanobacterial mat community, located in coastal North Carolina, USA, was sampled at monthly intervals for 1 yr (1993-94) to determine changes in community composition. The abundances of major phototrophic groups were quantified based on the relative concentrations of taxaspecific photopigments (chlorophylls and carotenoids). …
Stomatal Characterization Of Grass Leaves By Four Preparation Techniques, Val J. Anderson, John S. Gardner, Joyce Phillips Hardy
Stomatal Characterization Of Grass Leaves By Four Preparation Techniques, Val J. Anderson, John S. Gardner, Joyce Phillips Hardy
Faculty Publications
Four leaf preparation techniques (air drying, tetramethylsilane air drying, critical point drying, and freeze substitution) used in scanning electron microscopy (SEM) were evaluated with respect to the degree of cellular distortion they produce in stomatal guard cells of leaves of Dactylis glomerata and Elymus canadensis. Surface morphological distortion and cuticle disruption in the air-dried and tetramethylsilane air-dried leaves, and cuticle disruption within the critical point-dried tissue made it difficult to obtain measurements.The freeze-substituted tissue experienced little cuticle disturbance, and the cellular morphology appeared normal. The length of the guard cells did not significantly differ between the air-dried, tetramethylsilane air-dried, critical …
Optimization Approach To The Treatment Of Open Boundary-Conditions, I. Shulman, James K. Lewis
Optimization Approach To The Treatment Of Open Boundary-Conditions, I. Shulman, James K. Lewis
Faculty Publications
A solution to an optimization problem is developed that deals with minimizing a measure of difference between the values of observed and predicted variables at an open ocean boundary. Minimization is based on the change of the flux of energy through the open boundary. It is shown that many of the longwave radiation conditions that are commonly used in ocean modeling can be derived using this optimization criteria. However, the minimization process is seen to produce a modification of these radiation conditions in that they are multiplied by a coefficient, which allows the conditions to adapt to a change in …
Community Metabolism And Nutrient Cycling In The Mississippi River Plume: Evidence For Intense Nitrification At Intermediate Salinities, Joseph D. Pakulski, Ronald Benner, Rainer Amon, Brian Eadie, Terry Whitledge
Community Metabolism And Nutrient Cycling In The Mississippi River Plume: Evidence For Intense Nitrification At Intermediate Salinities, Joseph D. Pakulski, Ronald Benner, Rainer Amon, Brian Eadie, Terry Whitledge
Faculty Publications
Community respiration, net nutrient fluxes and heterotrophic bacterial production were investigated in the Mississippi River (USA) plume during May 1992 using dark bottle incubations of unfiltered water. Highest rates of community O2 consumption and dissolved inorganic carbon regeneration were observed at intermediate (10 to 27%0) plume salinities. Plume surface 02 consumption rates were 2- to 4-fold greater than rates reported previously during the summer and winter. Heterotrophic bacterial production ([3H]-leucine incorporation) was also highest at intermediate salinities and 2- to 4-fold greater than rates reported from other seasons. Net regeneration of NH4+ …
Hardwoods In North Mississippi: Resource Information From Two Forest Surveys, Steven H. Bullard, Clay Robertson, Joshua Idassi, Joanne L. Faulkner
Hardwoods In North Mississippi: Resource Information From Two Forest Surveys, Steven H. Bullard, Clay Robertson, Joshua Idassi, Joanne L. Faulkner
Faculty Publications
The USDA Forest Service periodically conducts forest surveys for Mississippi and other states. Survey results for a 26-county area designated as "North Mississippi" were most recently published in late 1993. We compared the hardwood acreages, volume, growth, removals and other values to the survey results published in 1987 for this region, and several significant results are evident:
Root Growth Potential And Field Survival Of Container Loblolly Pine Seedlings Fall Fertilized With Nitrogen, Hans Michael Williams, David B. South
Root Growth Potential And Field Survival Of Container Loblolly Pine Seedlings Fall Fertilized With Nitrogen, Hans Michael Williams, David B. South
Faculty Publications
Two studies investigated the effects of fall nitrogen fertilizer applications on the root growth potential (RGP) and field performance of container loblolly pine seedlings (Pinus taeda L.). The seedlings were sampled at 4 chilling levels ranging from 100 to 550 hours (0 to 8' C). Seedlings propagated for the first study may have had a hidden nutrient deficiency and therefore the fall diammonium phosphate (DAP) application at rates of 202 kg N/ha and 67 kg N/ha increased RGP 43% and 32%, respectively. The growing season mineral fertilizer application rate was increased in the second study which may explain why nitrogen …
Clearcutting And Shearing On A Saline Soil In East Texas: Impacts On Soil Physical Properties, Chang Mingteh, Alexander K. Sayok, Kenneth G. Watterson
Clearcutting And Shearing On A Saline Soil In East Texas: Impacts On Soil Physical Properties, Chang Mingteh, Alexander K. Sayok, Kenneth G. Watterson
Faculty Publications
Soil samples, or in-situ measurements, were collected at seven occasions and at six depths to study the Impact of three forest conditions on soil physical properties of a saline soil in E. Texas. Soil bulk density, CW. of silt plus clay at the surface horizons, soil water content, soil water retention, and depth to groundwater Increased following intensive site preparation. Differences in these properties between the commercial clearcuttlng and undisturbed forest were small. The wet soil conditions created in the Intensive preparation site are not likely to be responsible for the failure of artificial pine regeneration. In areas where site …
Interpretation And Emotion: Making Heritage Live, Paul Risk
Interpretation And Emotion: Making Heritage Live, Paul Risk
Faculty Publications
No abstract provided.
Evaluation Of Pilot Interpretive Program For National Forest Recreation Areas In East Texas, Michael Legg, Ronda Sutphen
Evaluation Of Pilot Interpretive Program For National Forest Recreation Areas In East Texas, Michael Legg, Ronda Sutphen
Faculty Publications
Visitor surveys were conducted at Ratcliff and Double lake Recreation Areas to evaluate visitor characteristics and effectiveness of interpretive services as a management tool. Two hundred eighty-two campers completed the survey. Dat8 from both recreation areas were analyzed and compared in order to determine significant differences between visitors in recreation area and also between visitors who attended or did not attend interpretive programs.
Wilderness Planning: A Case Study In Dispute Resolution, Michael Legg, Marlene Rebori Tull
Wilderness Planning: A Case Study In Dispute Resolution, Michael Legg, Marlene Rebori Tull
Faculty Publications
Local landowners and environmental groups have historically disputed with the USDA National Forest Service in Texas over wilderness management issues such as wild and prescribed fire and management of the southern pine beetle (Dendroctonusfrontalis). To help diffuse polarization and open lines of communication between agency personnel and the general public, the theory of transactive planning was applied with the LAC process on two wilderness areas. Data collection consisted of: 1) participant observation; 2) issue-evaluation surveys; 3) process-evaluation surveys; and 4) exit interviews. Results indicate the planning process aids in dispute resolution by reducing antagonistic relationships and fostering public consensus in …
Association Of Mouse Fibrinogen-Like Protein With Murine Hepatitis Virus-Induced Prothrombinase Activity, Rebecca D. Parr, Laisum Fung, Jeffrey Reneker, Nancy Myers-Mason, Julian L. Leibowitz, Gary Levy
Association Of Mouse Fibrinogen-Like Protein With Murine Hepatitis Virus-Induced Prothrombinase Activity, Rebecca D. Parr, Laisum Fung, Jeffrey Reneker, Nancy Myers-Mason, Julian L. Leibowitz, Gary Levy
Faculty Publications
Previously, we demonstrated induction of a unique macrophage prothrombinase during infection of BALB/cJ mice by mouse hepatitis virus strain 3 (MHV-3). By immunologic screening, a clone representing this prothrombinase was isolated from a cDNA library and sequenced. The sequence identified this clone as representing part of a gene, musfiblp, that encodes a fibrinogen-like protein. Six additional clones were isolated, and one clone, p11-3-1, encompassed the entire coding region of musfiblp. Murine macrophages did not constitutively express musfiblp but, when infected with MHV-3, synthesized musfiblp-specific mRNA. musfiblp mRNA induction was earlier and significantly greater in BALB/cJ than A/J …
Molecular Mimicry Between Fc Receptor And S Peplomer Protein Of Mouse Hepatitis Virus, Bovine Corona Virus, And Transmissible Gastroenteritis Virus [Abstract], Emilia L. Oleszak, Jacek Kuzmak, Brenda Hogue, Rebecca D. Parr, Ellen W. Collisson, L. Scott Rodkey, Julian L. Leibowitz
Molecular Mimicry Between Fc Receptor And S Peplomer Protein Of Mouse Hepatitis Virus, Bovine Corona Virus, And Transmissible Gastroenteritis Virus [Abstract], Emilia L. Oleszak, Jacek Kuzmak, Brenda Hogue, Rebecca D. Parr, Ellen W. Collisson, L. Scott Rodkey, Julian L. Leibowitz
Faculty Publications
No abstract provided.
Foraging Ecology Of The Mangrove Salt Marsh Snake, Nerodia Clarkii Compressicauda: Effects Of Vegetational Density [Abstract], Stephen J. Mullin, Henry R. Mushinsky
Foraging Ecology Of The Mangrove Salt Marsh Snake, Nerodia Clarkii Compressicauda: Effects Of Vegetational Density [Abstract], Stephen J. Mullin, Henry R. Mushinsky
Faculty Publications
No abstract provided.
Chi Gong--An Exercise For Internal Health, G. Chen, Shirley H. M. Reekie
Chi Gong--An Exercise For Internal Health, G. Chen, Shirley H. M. Reekie
Faculty Publications
No abstract provided.
Growth Rate As A Function Of Food Consumption In Hatchling Sceloporus Virgatus (Sauria: Iguanidae), Geoffrey R. Smith
Growth Rate As A Function Of Food Consumption In Hatchling Sceloporus Virgatus (Sauria: Iguanidae), Geoffrey R. Smith
Faculty Publications
No abstract provided.
New Optical Cell Design For Laser Flash Photolysis Studies In Supercritical Fluids, Steven R. Goates, Milton L. Lee, Qin Ji, Edward M. Eyring, Rudi Van Eldik, Kedika Bal Reddy
New Optical Cell Design For Laser Flash Photolysis Studies In Supercritical Fluids, Steven R. Goates, Milton L. Lee, Qin Ji, Edward M. Eyring, Rudi Van Eldik, Kedika Bal Reddy
Faculty Publications
A high-pressure optical cell has been designed that achieves an effective separation between the chemical sample and the pressurizing medium and system. This design limits possible sample contamination and catalytic effects under supercritical fluid sample conditions. Laser flash photolysis experiments were carried out on molybdenum hexacarbonyl dissolved in supercritical CO2. The thermal ring closure reaction of the species Mo(CO)5L, where L is 2,2- bipyridine was found to proceed at rates comparable to those measured previously in liquid benzene or toluene. Much larger activation volumes were found for the reaction in supercritical CO2 than in liquid toluene.