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Showing 1 to 13 of 13 for “"net production"”.
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A Study of Energy Fixation and Net Production of Plant Communities in Salt Marshes of Back River, Virginia
Made available in DSpace on 2014-12-11T18:28:19Z (GMT). No. of bitstreams: 1 7114998.pdf: 6383763 bytes, checksum: cb0bdff27af5f7f1c65d3bc63a678341 (MD5) Previous issue date: 1970
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Development of a test system for screening toxic substances: a comparison using organic substances
… was different for the two ecosystem properties, net production and heterotrophic activity. Naphthoquinone concentration exhibited no correlation between ecosystems property values and therefore, could not be ranked. Phenol exhibited the greatest toxicity to net production immediately after the …
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Estimate of Production By a Population of Fathead Minnows, Pimpephales promelas, In a South Dakota Prairie Wetland
Estimates of production and population densities were obtained for an autochthonous population of fathead minnows, Pimephales promelas Rafinesque, in a South Dakota prairie wetland. The study was conducted from May to September of 1976. Population estimates were obtained using a Schnabel-type mark …
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Production of a Population of the Stout Razor Clam (Tagelus plebeius Solander) in a Virginia Estuary
<p>The annual net secondary production of the stout razor clam, <em>Tagelous plebeius</em>, was estimated at three sites on an intertidal sand flat at Lynnhaven Inlet, Virginia. Samples were taken at six week intervals for one year. The range of net production (P), mean annual biomass (B), and P/B …
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Roles of Neutrophil Activation in Asthma
… formation of neutrophil extracellular DNA trap (NET), which is an extracellular release of decondensed chromatin from neutrophils triggered by various stimuli including cytokines [e.g. intetleukin(IL)-8 or tumor necrosis factor (TNF)-α], phorbol 12-myristate 13-acetate (PMA) or microbial …
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Neutrophil extracellular traps in periodontitis
… the role of neutrophil extracellular traps (NETs) in the pathogenesis of periodontitis. A fluorometric assay was developed for the in vitro quantification of NET release and used to assess relative levels in chronic periodontitis patients, indicating elevated release under several stimulatory …
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Post-treatment horizontal hydraulic fracture modeling with integrated chemical tracer analysis, a case study
… transport of oil-based chemical tracers during production. Furthermore, the percentage of recovered tracers from different intervals along the wellbore varies, which can reflect the contribution of that interval to the net production. Based on the analysis, suggestions on how to conduct a tracer …
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The effects of temperature and moisture on alpine microbial processes across a gradient of soil development
… conditions during the incubations. The net production of NO3- occurred in all soils under all experimental conditions, however the rate at which NO3- was produced responded differently to temperature and moisture treatments. This suggests that global change may affect biological controls …
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Stand Density Management for Optimal Volume Production
The relationship between volume production and stand density, often termed the 'growth-density relationship', has been studied since the beginnings of forestry and yet no conclusive evidence about a general pattern has been established. Throughout the literature claims and counterclaims concerning …
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Import and decomposition of dissolved organic carbon in pre-dams of drinking water reservoirs
… carbon cycle as well as for drinking water production from surface waters. DOC concentrations increased in water bodies of the northern hemisphere in the last decades, posing ecological consequences and water quality problems. Within the pelagic zone of lakes and reservoirs, the DOC pool is …
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Liquid-core microcapsules: A mechanism for the recovery and purification of selected molecules in different environments
… and membrane size of the microcapsules during production, with either being able to occupy between 10-90% of total capsule volume. It was shown throughout this work that this trait can be a very important property, as it can affect the numerous characteristics of capsules, such as: mechanical …
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Biogeochemical Transformations of Trace Element Pollutants During Coal Combustion Product Disposal
… microcosm experiments indicated negligible net production of MeHg in microcosms with no ash and in microcosms amended with the low-sulfate/low-Hg ash. In contrast, microcosms amended with sulfate and mercury-rich ash showed increases in MeHg concentrations that were two to three times …
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The marine biogeochemistry of dissolved organic carbon and dissolved organic nutrients in the Atlantic Ocean
… DOM, a byproduct of photosynthetic<br/>production, has important ecological significance as a substrate that supports<br/>heterotrophic bacterial growth, thereby causing oxygen consumption and regenerating<br/>inorganic nutrients. In the open ocean the net production of DOC is ultimately …