Search Results - "Nicholas, N. S."

Carbon sources and sinks in high-elevation spruce–fir forests of the Southeastern US by Van Miegroet, H., Moore, P.T., Tewksbury, C.E., Nicholas, N.S.

“…This paper examines carbon (C) pools, fluxes, and net ecosystem balance for a high-elevation red spruce–Fraser fir forest [ Picea rubens Sarg./ Abies fraseri…”
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Coarse Woody Debris in a Southern Appalachian Spruce-fir Forest of the Great Smoky Mountains National Park by Rose, Anita K, Nicholas, N. S

“…Spruce-fir forests in the southern Appalachian Mountains receive high atmospheric nitrogen inputs and have high nitrate levels in soil solution and…”
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Exploring interactions between pollutant emissions and climatic variability in growth of red spruce in the Great Smoky Mountains National Park by Webster, K.L, Creed, I.F, Nicholas, N.S, Van Miegroet, H

“…Concern exists as to the status of red spruce (Picea rubens Sarg.) in the Great Smoky Mountains, with evidence both for and against an unprecedented decline in…”
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Dendrochemical Analysis of Lead and Calcium in Southern Appalachian American Beech by Fisher, Suzanne, Nicholas, N.S., Scheuerman, Phillip R.

“…ABSTRACT The health of the northern hardwood forest in the southern Appalachian Mountains of Tennessee, North Carolina, and Virginia has gained attention from…”
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Acidic deposition, ecosystem processes, and nitrogen saturation in a high elevation Southern Appalachian watershed by Nodvin, S.C, Van Miegroet, H, Lindberg, S.E, Nicholas, N.S, Johnson, D.W

“…A red spruce-Fraser fir forest 17.4 ha catchment in the Great Smoky mountains was monitored for precipitation, throughfall, stream hydrology and stream…”
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Patterns of Overstory Composition in the Fir and Fir-Spruce Forests of the Great Smoky Mountains After Balsam Woolly Adelgid Infestation by Smith, George F, Nicholas, N. S

“…In 1957, the exotic balsam woolly adelgid (Adelges piceae Ratz.) was discovered in the southern Appalachians. It quickly spread throughout the spruce-fir…”
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Succession dynamics in a maritime forest following Hurricane Hugo and fuel reduction burns by Smith, G.F., Nicholas, N.S., Zedaker, S.M.

“…In 1989, Hurricane Hugo devastated the maritime forest communities on Bull Island, SC, where a system of permanent plots was established. This catastrophic…”
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Immunosuppressive properties of pregnancy serum on the mixed lymphocyte reaction by Nicholas, N S, Panayi, G S

“…The human fetus may escape immunological attack because of serum factors which have immunomodulatory influence on maternal cellular effector responses. Paired…”
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Human pregnancy serum inhibits interleukin-2 production by NICHOLAS, N. S, PANAYI, G. S, NOURI, A. M. E

“…Cell-mediated immunity may be depressed during pregnancy. We used the two way mixed lymphocyte reaction as an in vitro model of cell mediated immunity and…”
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Mechanisms of macrophage activation in rheumatoid arthritis: the role of gamma-interferon by RIDLEY, M. G, PANAYI, G. S, NICHOLAS, N. S, MURPHY, J

“…Gamma-interferon (gamma-IFN) is a potent inducer of surface expression of class II MHC molecules in vitro. Enhanced HLA-DR expression is a characteristic…”
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Rheumatoid arthritis and pregnancy by Nicholas, N S, Panayi, G S

“…Although some 70% of patients with rheumatoid arthritis remit during pregnancy, the mechanism for this is not known. A variety of mechanisms have been invoked…”
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Human retroplacental sera inhibit the expression of class II major histocompatibility antigens by Nicholas, N S, Panayi, G S, Murphy, J, Pitzalis, C

“…Since factor(s) present in human pregnancy sera may interfere with HLA-DR expression on antigen-presenting cells which could account for fetal immune…”
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Is there synchronicity in nitrogen input and output fluxes at the Noland Divide Watershed, a small N-saturated forested catchment in the Great Smoky Mountains National Park? by Van Miegroet, H, Creed, I F, Nicholas, N S, Tarboton, D G, Webster, K L, Shubzda, J, Robinson, B, Smoot, J, Johnson, D W, Lindberg, S E, Lovett, G, Nodvin, S, Moore, S

“…High-elevation red spruce [Picea rubens Sarg.]-Fraser fir [Abies fraseri (Pursh.) Poir] forests in the Southern Appalachians currently receive large nitrogen…”
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Post-disturbance spruce-fir forest stand dynamics at seven disjunct sites by Smith, G.F, Nicholas, N.S

“…Forests dominated by red spruce (Picea rubens Sarg.) and Fraser fir [Abies fraseri (Pursh) Poir.] occupy the highest elevations of the southern Appalachians…”
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ENVIRONMENTAL DECISION-MAKING by Joslin, J. D., Nicholas, N. S.

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Rheumatic diseases in pregnancy by Nicholas, N S

“…The effects of pregnancy on the clinical course of the rheumatic diseases is not only variable but often unpredictable. Disease activity at the onset of…”
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Seedling recruitment and stand regeneration in spruce-fir forests of the Great Smoky Mountains by Nicholas, N.S. (Virginia Polytechnic Institute and State University, Blacksburg, VA), Zedaker, S.M, Eagar, C, Bonner, F.T

“…Seedfall and seedling recruitment was assessed in spruce-fir forests of the Great Smoky Mountains (Tennessee and North Carolina) from 1985 to 1990. A permanent…”
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Maritime forests on Bull Island, Cape Romain, South Carolina by Helm, A. C., Nicholas, N. S., Zedaker, S. M., Young, S. T.

“…Bull Island is a barrier island within Cape Romain National Wildlife Refuge in Charleston county, South Carolina. Prior to Hurricane Hugo in September of 1989,…”
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A comparison of overstory community structure in three southern Appalachian spruce-fir forests by Nicholas, N.S. (Tennessee Valley Authority, Norris, TN), Zedaker, S.M, Eagar, C

“…The southern Appalachian spruce-fir ecosystem is described in terms of stand structure and comparisons of current status to descriptions of earlier studies at…”
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Inhibition of interleukin-2 production by retroplacental sera: a possible mechanism for human fetal allograft survival by Nicholas, N S, Panayi, G S

“…Fetal tolerance may be a consequence of a local nonspecific serum factor(s) having immunomodulatory activity on maternal cellular effector responses. Paired…”
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