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Showing 1 to 20 of 2450 for “"nutrients"”.
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Biological nutrients eradication employing Aerobic Granulation
Nutrients (nitrogen and phosphorus), since mid-20th century, have been a rising matter of concern- impacting the quality of natural water bodies and stressing the wastewater treatment facilities. The increased availability of nitrogen and phosphorus are known to cause the excessive aging of lakes, …
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Lysosomal nutrients and the mTORC1 pathway
The lysosome is the major catabolic organelle, is the site of activation of the master growth regulator mTORC1 (mechanistic target of rapamycin (mTOR) complex 1), and is often deregulated in common diseases, such as cancer. Given the critical role of lysosomes in maintaining cellular homeostasis, a …
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Biological nutrients and growth in anaerobic digestion
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Sanitary Engineering, 1961.
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Nutrients Analysis of Preschool Lunch Menus in Virginia
Child care centers are becoming much more influential in educating and caring for children because more and more families choose supplemental care for their young children in child development programs. In June 1997, Child and Adult Food Program (CACFP) served nearly 2.2 million children and …
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Septic tank nutrients in groundwater entering Lake Sallie, Minnesota
<p> The nutrient contribution of septic tanks to a lake was evaluated at Lake Sallie, in glacial outwash terrain of northwestern Minnesota. Groundwater entering the lake was collected by covering 0.258 m2 of lake bed with a bottomless cylinder vented to deflated plastic bag. Inflow velocity ranged …
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Spatial Variability of Plant Nutrients in Two Illinois Fields
… the spatial variability of soil supplied plant nutrients in fields. Two Illinois fields which have been soil sampled in a 25 meter grid for several previous years and having a known history were selected to determine the variability of soil pH, and available P and K in a field environment.
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Measuring and modelling estuarine macroalgae blooms and water column nutrients
… on long-term monitoring datasets of water column nutrients, temperature and irradiance, the Ulva tissue nitrogen concentration is modelled using an algebraic short-term equilibrium solution to a classic set of ordinary differential equations describing tissue nutrient dynamics. A detailed …
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Establishing a role for specific nutrients in Drosophila dietary restriction
… this project investigates the role of specific nutrients mediating the effects of DR and the potential pathways controlling these effects. Essential amino acids were shown to directly regulate the trade-off between high fecundity and reduced lifespan observed with full feeding. However, …
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Rapid measurements of periphytic responses to nutrients using PAM fluorimetry
… not only for measuring periphytic responses to nutrients but also for evaluating the effect the nutrient changes have on overall photosynthetic efficiency.</p>
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Regrowth of Chlorella sorokiniana on Recycled Media with Replenished Nutrients
… phase, at which point the biomass was removed, nutrients replenished to their initial concentrations, and the recycled culture media used for a subsequent round of growth. The culture media was recycled through five rounds of growth with cultures grown on recycled media compared to controls …
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Retention of Nutrients and Phytochemicals in Fresh and Processed Broccoli
The objective of the study was to determine whether thermal processing, storage and preparation affected concentrations of ascorbic acid, $\beta$-carotene, sulforaphane (SF), sulforaphane nitrile (SFN), cyanohydroxybutene (CHB), iberin (I) and iberin nitrile (IN) in fresh and frozen broccoli. The …
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Exploring Forward Osmosis Systems for Recovery of Nutrients and Water
Livestock wastewater contains a large amount of nutrients that are available for recovery. In this study, a proof of concept process based on forward osmosis (FO) was proposed and investigated for in-situ formation of struvite from digested swine wastewater. This FO system took advantage of a …
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In situ monitoring and biogeochemical cycling of nutrients in estuarine waters
… Chapter One presents a general overview of nutrients, how they are essential for aquatic biota, their general characteristics and the importance of their behaviour in estuaries. Commonly used analytical methods for nutrient determinations in natural waters are also evaluated. Chapter Two …
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Using Tall Fescue to Remove Nutrients from Renovated Turkey Processing Wastewater
The aim of this study is to use commercially valuable ornamental plants, such as tall fescue, for wastewater treatment without decreasing the overall treatment efficiencies of a greenhouse-based hydroponic system. The wastewater, from a turkey processing plant, was treated in a sand bioreactor …
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The Effect of Various Nutrients on the Sporulation of TRICHOPHYTON RUBRUM
… with an equal amount of glucose. The various nutrients were tested at two concentrations, 1.25 mg/ml and 0.25 mg/ml. Yeast extract and peptone were also included in the study since these complex mixtures are both known to increase growth and promote sporulation of some of the …
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The sources and fates of nutrients in the Deep Lake watershed
… survey determined the sources and fates of nutrients within the Deep Lake watershed located in Stevens County, WA. Deep Lake is a 191-acre exorheic lake found just below the Canadian border in northeast Washington state. It is situated at the bottom of a narrow valley with steep walls and is …
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The Aerobic Treatment of Sewage Solids to Remove Soluble Plant Nutrients
Made available in DSpace on 2014-12-09T22:04:04Z (GMT). No. of bitstreams: 1 6406085.pdf: 3204954 bytes, checksum: a9274485e7309d6851f1fa3b4a981ef8 (MD5) Previous issue date: 1963
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Polyhalite alters the uptake and partitioning of mineral nutrients in corn
… fertilizer that supplies four key plant nutrients potassium, calcium, magnesium, and sulfur. Sirius Minerals, a company formed to develop and market the new fertilizer, has started to commercially produce a granulated version of polyhalite with the trade name POLY4 (0-0-14-10Ca-4Mg-19S). …
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Algal nutrients: sources and patterns of flow in the Occoquan Watershed
The movement of algal nutrients was studied in the Occoquan Watershed. During the period April through September 1973, weekly water samples collected by the Occoquan Monitoring Laboratory were split for chemical analysis and algal growth potential (AGP) assay. Variation in AGP observed between …
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Large scale oceanic circulation and fluxes of freshwater, heat, nutrients and oxygen
… average export production is found for nutrients in several temperate regions. Despite the large uncertainties, the production magnitudes are consistent with independent measurements from sediment traps and isotopic data. Net nutrient sources or sinks are found in several regions, …
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