Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 23 for “"critical levels"”.
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Kolmogorov-Smirnov test for grouped data
… was originally designed for calculating exact critical levels for test with discrete distributions. This test extends the goodness-of-fit test to samples which are grouped into intervals. Critical levels in the two-sided case were calculated to a close approximation. Some examples of the …
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Diagnosis of Loblolly Pine (Pinus taeda L.) Nutrient Deficiencies by Foliar Methods
… closure. Nutrient concentrations relative to the critical level, optimal nutrient ratios, DRIS methodology, vector analysis, and changes in individual fascicle and total current year foliage weight/area were used to identify deficiencies. Phosphorus was repeatedly indicated as most limiting growth …
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Evaluation and calibration of soil tests for available zinc
… of Virginia soils. It was pointed out that the critical levels obtained for the procedures are considered tentative and that the calibration should be continued as more field data become available.
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Modeling Low Flow Hydraulics in Alluvial Channels (pools-Riffles, Open)
… in recent years as a means of determining critical levels of water pollution, aquatic habitat and instream flow needs. To assess these critical conditions, it is necessary to predict the hydraulic response of a river system to a given low flow discharge. Conventional flow models, however, …
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Degradation despite regulation : water pollution in Billings Basin, Sao Paulo, Brazil
… contributed to maintaining the pollution below a critical point. The study suggests that the laws, in fact, did not seem to have been responsible for the lower than expected levels of pollution because they were ineffective and had intrinsic weaknesses. The pollution in Billings Basin should have …
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Factors affecting loblolly pine growth following site preparation
… woody shrub, and hardwood competition levels were not significantly different among site preparation treatment areas after four years. However, hardwood competition levels had increased at a faster rate during the last two growing seasons on chopped and disced areas than on the other …
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Green Infrastructure: The Landscape of Urban EcoHousing
… quality, air pollution, and energy use reaching critical levels. The development of urban areas and the built environment is the primary cause of these problems and the built environment needs to be a part of the solution. This design thesis project produces a prototype design for the Urban …
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Understanding organizational context for the evaluation of training outcomes: A multi-site case study in the community mental health sector
… resource development to Guskey's (2000) five critical levels of professional development. This evolution responds to the changing needs of organizations. Analyses of organizational contexts is gaining in importance given that these analyses point to the specific aspects of organizations which …
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Experimental investigation of a prestressed concrete girder bridge model
… to obtain baseline behavior and at various levels of damage. Damage was inflicted to the exterior girder of the bridge to simulate field damage. Damage consisted of both removal of concrete and the severing of the prestressing strands. Concrete and steel were removed in small increments so …
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The fate of applied phosphorus on a piedmont soil and its effect on loblolly pine growth twenty years after application
… affected by treatment and foliar phosphorus levels were above 0.10% indicating that a deficiency was not the immediate growth limiting factor. Double-acid-extractable soil phosphorus critical levels established for the Coastal Plain do not appear useful for diagnosing tree requirements for …
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Quantifying the impacts of ozone pollution on the sustainability of pasture
… which could assist in the development of new critical levels for the protection of pasture vegetation.
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Manaaki whenua. Manaaki tangata: Care for the land, care for the people: Leading critical school reform with mana whenua and whānau Māori
… of education failure for Māori resulting in high levels of endemic social and economic disadvantage in many Māori communities. This thesis examines the leadership praxis of two Pākehā principals, to understand how, with more respectful connections with Māori communities, they were able to address …
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On Brain Oedema
… may thereby raise the intracranial pressure to critical levels, affecting cerebral blood flow and oxygenation. In this thesis, brain oedema and its origins are investigated in experimental models of brain trauma and bacterial meningitis, and in patients suffering severe head injury. The studies …
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The cultivation of Ulva lactuca (chlorophyta) in an integrated aquaculture system, for the production of abalone feed and the bioremediation of aquaculture effluent
… diel fluctuation in dissolved oxygen is above critical levels (6 mg.l) for abalone respiration at night, thus indicating that direct recirculation is possible.
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The role of body composition in the onset of lay of Japanese quail (Coturnix coturnix japonica)
… delayed. The quail fed the lower protein levels entered lay at later ages than those fed the high protein diets. Likewise, the restricted fed groups achieved lay at later ages than the <i>ad libitum</i> fed groups. Other traits examined in this experiment including body weight, breast …
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Performance of Concrete Bridge Deck Surface Treatments
… prevent chloride concentrations from reaching critical levels. This research suggests that epoxy-based surface treatments should be specified for concrete bridge decks when both a chloride barrier and improved skid resistance are desired. If a chloride barrier is all that is needed or desired, …
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Chelate Assisted, Pressurized, Liquid Extraction for the Removal of Adsorbed Metal Contaminants From Soils
… unique feature of CAPLE allows us to quantify levels of contaminant metals and correlate them to anthropological activity in the area. CAPLE requires the use of a modified supercritical fluid extractor for operation with water at sub-critical levels. The extraction of the sorbed metals is …
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Investigation of biofilm development by antibiotic resistant urinary tract infection pathogens and evaluation of antimicrobial activity of Manuka honey on Escherichia coli CTX-M-15 biofilms
… The rise of antibiotic resistance is reaching critical levels as new mechanisms of resistance are emerging and spreading globally, limiting the available effective treatment options. In addition, biofilms are another significant health care issue: they act as a protective cover for infectious …
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The physiological changes of circulatory death with respect to organ donation
… being above generally accepted minimal levels for up to 40 minutes longer in donors during the maximum accepted agonal period of 240 minutes. I also present evidence of cardiothoracic organ retrieval decisions based on saturations which have led to potentially transplantable organs being …
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Nutrient composition of ensiled alfalfa and corn forages grown in Virginia
… in fertilizer or manure. Data were compared with critical levels of mineral requirements of various classes of livestock. Alfalfa silage was higher (P < 0.05) in crude protein (CP), P, K, Ca, Mg, S, Mn, and Fe than com silage. Ammoniated corn silage was higher (P < 0.01) in CP and NS ratio, and …
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