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 17 of 17 for “"METHODS OF PREPARATION"”.
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A study of methods of preparation of phthalaldehyde
… chalcones, flavones, and anthocyanidins. Members of the three classes of compounds exist as natural products and occur widely as coloring matter in flowers and plant saps.</p><p>An attempt has been made to work out a new method for the preparation of phthalaldehyde. Two lines of research have been …
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An investigation into surface effects in thin film plastic scintillators
An investigation into the luminescent response of thin film plastic scintillators as a function of their method of preparation is made. Investigations are carried out on NE102A and NE118 using four different methods of preparation. It is found that the Birks model for luminescence as a function of …
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The Value of a College Education: First-Generation College Students Perceptions at a Southeastern University
… social and cultural capital theory, the purpose of this research is to better understand how first-generation college students perceive the value of their college education and to examine whether students’ methods of preparation for life after college are positioning them for successful futures, …
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Η ΜΕΤΑΞΟΥΡΓΙΑ ΣΤΙΣ ΚΟΙΝΟΤΗΤΕΣ ΛΑΠΗΘΟΥ ΚΑΙ ΚΑΡΑΒΑ ΤΗΣ ΚΥΠΡΟΥ
THE SUBJECT OF THE THESIS IS OF ETHNOGRAPHIC CHARACTER AND REFERS TO THE TRADITIONAL TECHNOLOGY OF WEAVING SILK PRODUCTION AND METHODS OF PREPARATION AND WEAVING OF THIS RAW MATERIAL. THIS AREA UNDER CONSIDERATION ARE THE COMMUNITIES OF LAPITHOS AND KARAVAS ON THE NORTH COAST OF CYPRUS, WHERE A …
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Synthesis and characterization of novel polyaniline/metal composites
The chemical synthesis of polyaniline (PANI) is explored using tetrachloroaurate, AuCl4- and hexachloroplatinate, PtCl 62-. These studies provide a simple method for the direct oxidation of aniline by these metal species and simultaneous formation of bulk quantities of PANI/Au and PANI/Pt …
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Study of the mechanism of cyclisation in the preparation of dioxazines and developments of synthetical methods based upon the results
… into two sections. The first involved the preparation of known triphenodioxazine pigments and the purification and examination of their properties which had not been hitherto carried out. Much adaption of existing methods for the preparation of 1-aminopyrene and 3-aminocarbazole was …
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Synthese und Charakterisierung von Polymerbürsten-Oberflächen mit Gradienten und Strukturierung (Synthesis and characterization of patterned and gradient polymer brush surfaces)
The thesis is devoted to the development of general methods of preparation of tethered polymer layers with laterally changing properties and investigation of their properties with focus on controlled adsorption and liquid flow. The temperature dependent character of the grafting reaction is used …
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The blending of hydroxypropyl lignin with poly(methylmethacrylate) and poly(vinyl alcohol)
Polymer blends consisting of hydroxypropyl lignin (HPL ) and commercially available poly(methyl methacrylate) (PMMA ) and poly(vinyl alcohol) (PVA) were evaluated in terms of their morphology, viscoelastic properties and mechanical properties. In the case of HPL/PMMA blends experimental variables …
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AN ACOUSTIC METHOD FOR IDENTIFYING SAND FABRIC AND LIQUEFACTION POTENTIAL
… an acoustic method for identifying the fabric of saturated medium to fine sand samples, and their related resistance to liquefaction. Three methods of preparation, that produced repeatably different preferred long grain axis orientations, were used to prepare laboratory samples (6.8" high by …
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Development of a room temperature molecular electronics: Direct vs indirect metal complex synthesis
This thesis discusses the possibility of using molecular units as electronic devices as well as the synthesis of a number of such prototypes. This thesis also serves as a comparison between ‘direct’ (complexes as ligands/complexes as metals) and ‘indirect’ (on-complex) synthesis as a method of …
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Reading Skill Integration In High School Business Courses: Perceptions Of Business Teacher Educators In The United States
The problem of this research was to determine (a) perceptions of business teacher educators regarding the nature of integrated reading skill instruction in high school business courses, (b) the professional development background of business teacher educators for integrated reading skill …
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Syntheses of luciferins and their bioluminescent evaluation
Luciferins are a class of light emitting small molecule substrates. These molecules are oxidised to produce visible light in a reaction catalysed by the luciferase enzymes. The combination of this luminescent reaction coupled with CCD cameras, has produced revolutionary technologies that enable …
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The role of additives in Fischer-Tropsch reactions
… route to produce liquid fuels from a variety of carbon feedstocks including coal and biomass. Typically iron and cobalt based catalysts have been used for the FTS reaction, in which a mixture of CO and H2 (syn-gas) reacts to form hydrocarbons. Enhanced performance has been reported for …
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Becoming a ward sister: accident or design?
… they have great influence on the quality of patient care, the staff experience and the efficient use of resources. Despite many National Health Service policy documents supporting the need for preparation and support for ward sisters, the preparation and support available remains variable. …
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Investigating the effect of amorphization method on the physicochemical properties and heat- and moisture-induced crystallization behaviors of amorphous sucrose
… efficacy. As a result, the physical stability of amorphous sugars has stimulated substantial research; however, comparatively few studies have examined the effect of different amorphization methods on the physicochemical properties and stability of amorphous sugars created from the same …
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ΕΠΙΔΡΑΣΗ ΤΩΝ ΑΜΙΝΩΝ ΣΤΙΣ ΔΟΜΙΚΕΣ ΚΑΙ ΚΑΤΑΛΥΤΙΚΕΣ ΙΔΙΟΤΗΤΕΣ ΤΗΣ ΓΛΥΚΟΓΟΝΙΚΗΣ ΦΩΣΦΟΡΥΛΑΣΗΣ Β
THE SCOPE OF THIS WORK IS THE STUDY OF PHYSICOCHEMICAL, CATALYTIC AND STRUCTURAL PROPERTIES OF PHOSPHORYLASE B, IN THE PRESENCE OF AMINES. THE AMINES STUDIED ARE THE ALIPHATIC AMINES, THE PHENOTHIAZINES AND THE POLYMYXINS. THESE AMINES IN THE PRESENCE OF AMP INDUCE A SIGNIFICANT ENHANCEMENT OF …