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 280 for “"Extractions"”.
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FAITHFUL ESTIMATION OF UNCERTAINTIES IN MODERN PDF EXTRACTIONS
The primary focus of this Ph.D. thesis is the precise determination and validation of the uncertainties associated with parton distribution func- tions (PDFs). We introduce and implement the theory covariance method within the NNPDF4.0 framework, enabling the incorporation of theoretical …
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Ionic Liquids in Micro Extractions and Gas Chromatographic Stationary Phases
… of their partition coefficient. Ideally both the extractions were expected to give close values for the partition coefficient . But in actual IL-SHS SDME showed superior extraction when compared to IL-SSDME</p> <p>Ionic liquid based microextractions not only served as ‘green’ alternative to …
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Prevalence and Rationale of Orthodontic Extractions at Loma Linda University
… 2014 were reviewed for prevalence of orthodontic extractions. Cone beam computed tomograms (CBCTs) of patients, that had extraction(s) prescribed as part of orthodontic treatment, were analyzed dentally and skeletally. Patients were then categorized according to the degree of crowding in each …
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Residence time distributions in continuous flow emulsion liquid membrane extractions
Includes bibliographical references.
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Characterization of Molecular Content, Cytotoxicity, and Anti-Inflammatory Activity of Extractions from Eupatorium serotinum
<p>Inflammation is a complex and varied immune response which can be expressed chronically or as a temporary reaction to foreign invaders. Symptoms of inflammation include swelling, pain, soreness, and difficulty of motion. Recently, the effect of sesquiterpene lactones such as Helenalin from …
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Numerical fixed-effectiveness and fixed-area models of the humidification dehumidification desalination system with air extractions and injections/
… approach to model the use of multiple air extractions and injections to thermodynamically balance the HDH system, so as to make it more energy efficient. The effect of the number of extractions on several performance parameters is studied. In addition, we study the effect of the enthalpy …
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Characterization of blackcurrant berries (Ribes nigrum) and the evaluation of their bioactive compounds after ultrasound-assisted water extractions, enzymatic treatments, and fermentation
Blackcurrants (Ribes nigrum) (BC) have remained relatively unknown to the US market because they were prohibited from being grown in the US from the early 20th century until the 1980s. This was due to significant losses by the lumber industry, which discovered that some native and non-native …
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A comparison of the efficacy and safety of intranasal sufentanil/midazolam and ketamine/midazolam for sedation and analgesia in a paediatric population undergoing multiple dental extractions
… preschool children that require dental surgery [extractions]. Fifty children [ASA 1] aged 5 – 7 years, requiring six or more dental extractions under general anaesthesia, were allocated to two groups of 25 children to receive either ketamine 5 mg/kg or sufentanil 20μg intranasally, 20 minutes …
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Effects of Unilateral Extraction Treatment on Arch Symmetry and Occlusion
… correcting moderate asymmetries is asymmetric extractions. This study evaluated post-treatment dental arch symmetry in patients treated with unilateral premolar extractions. Post-treatment casts of 60 patients were divided into four treatment groups based on the history of occlusal asymmetry …
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Anthropogenic Lead Deposition and Four National Parks in Poland as Determined by Lead Isotope Ratios
… in geochemical fractions, by sequential chemical extractions, may indicate whether a metal has been recently deposited in the soil. While concentration levels alone cannot distinguish between natural and anthropogenic Pb, studies have demonstrated that anthropogenic pollution is accurately …
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Supercritical fluid extraction of polychlorinated biphenyls and organochlorine pesticides from mussel tissue (Mytilus edulis)
… and compared to traditional Soxhlet extractions. The aim of this study was to determine the efficacy of SFE for the extraction of these lipophilic compounds which involved a spike study to determine the feasibility of on-line sample clean-up by an inclusion of activated alumina within …
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Treatment Outcomes and Stability in Extraction vs. Non-Extraction Adult Anterior Open Bite Patients
… to maintain. Some orthodontists utilize extractions to assist in bite closure. This study aims to explore whether extractions in adult patients with AOB lead to improved treatment outcomes and better long-term stability.Methods: The pre- and post-treatment records of adult orthodontic …
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Value-Added Opportunities for Tomato and Peach Seeds
… to produce specialty oils. Organic solvent extractions are commonly used to extract oils from various commodities in the food industry, but this method comes with some environmental concerns, such as toxicity and flammability. Enzyme-assisted aqueous extractions (EAEP) have been proposed as …
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Production of Zein From Dry Milled Corn by Solvent Extraction and Ultrafiltration
… of 17 g/l in the extract. Multiple extractions of the same corn with fresh ethanol resulted in a yield of 85% after 4 extractions, while multiple extractions of fresh corn with the same ethanol resulted in high zein concentration in the extract (15 g/l). The zein extracted in our …
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Gap dependencies in coordination
The goal of this thesis is to analyze extractions out of coordinate structures without positing principles specific to coordination. I show that A$\sp\prime$-movement in coordination is reducible to a version of the conjunctive Empty Category Principle (ECP), while NP-movement and Head movement are …
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Extraction of Additives from Polystyrene and Subsequent Analysis
… to traditional dissolution/precipitation extractions. The purpose of the study was twofold: 1) the development of a high performance liquid chromatography (HPLC) method(s) for the additives and 2) the determination of the viability of supercritical fluid extraction (SFE) for the additives …
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Integrating local context and global cohesiveness for open information extraction
… to identify high-quality sentence-level extractions. In this paper, we propose a novel open IE system, called ReMine, which integrates local context signal and global structural signal in a unified framework with distant supervision. The new system can be efficiently applied to different …
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Sustainability of reductive dechlorination at chlorinated solvent contaminated sites: Methods to evaluate biodegradable natural organic carbon
… on aquifer sediment were investigated. Single extractions with different extracting solutions showed that extractable organic carbon associated with the sediment ranged from 1-38% of the total organic carbon content (TOCs). Bioassay experiments demonstrated that 30-60% of the extractable …
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Characterization of zein extracted from beer solids, a coproduct of dry-grind ethanol
… to modify the pH of extraction solvent. Alkaline extractions resulted in samples with higher protein content, although, of lower solubility. Additionally, alkaline extraction, reduced or eliminated g-zein from the zein profile. Moreover, zein of alkaline extraction resisted particle aggregation …
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Analysis of a room temperature partial extraction technique for heavy metals from soils
… to the acid’s lower reactivity. Room temperature extractions using strong acids at extended contact times were found to attack silicate minerals, but solutions stronger than have previously been used may be utilized without damage to the soil structure. Extractions utilizing heat and concentrated …
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