3,102 Matching Results

Search Results

Results: 1 - 24 next

Role of DEFECTIVE IN SYSTEMIC DEFENSE INDUCED BY ABIETANE DITERPENOID 1 (DSA1), a Putative O-Fucosyltransferase, in Plant Systemic Acquired Resistance (SAR)

Description: Dehydroabietinal (DA), an abietane diterpenoid, was previously demonstrated to be a potent activator of systemic acquired resistance (SAR). DA also promotes flowering time in Arabidopsis thaliana by repressing expression of the flowering repressor FLOWERING LOCUS C (FLC) while simultaneously upregulating expression of FLOWERING LOCUS D (FLD), FLOWERING LOCUS VE (FVE) and RELATIVE OF EARLY FLOWERING 6 (REF6), a set of flowering time promoters. To further understand the mechanism underlying signa… more
Date: May 2022
Creator: Mohanty, Devasantosh
Partner: UNT Libraries
open access

L-asparaginase II Production by Escherichia coli

Description: Growth of Escherichia coli A-l under aerobic conditions in an enriched medium with a total amount of 0.2 per cent glucose was biphasic and asparaginase II activity was detected after depletion of ammonia from the growth medium in the second phase of growth. Glucose was exhausted two hours before ammonia and three hours before asparaginase II activity was detected. The concentration of 3',5'-cyclic adenosine monophosphate was found to fluctuate when the dissolved oxygen in the medium reached a l… more
Date: May 1985
Creator: Johnson, Terrance L. (Terrance Lewyne), 1950-
Partner: UNT Libraries

Computational Modeling of Cancer-Related Mutations in DNA Repair Enzymes Using Molecular Dynamics and Quantum Mechanics/Molecular Mechanics

Description: This dissertation details the use of computational methods to understand the effect that cancer-related mutations have on proteins that complex with nucleic acids. Firstly, we perform molecular dynamics (MD) simulations of various mutations in DNA polymerase κ (pol κ). Through an experimental collaboration, we classify the mutations as more or less active than the wild type complex, depending upon the incoming nucleotide triphosphate. From these classifications we use quantum mechanics/molecula… more
Date: May 2022
Creator: Leddin, Emmett Michael
Partner: UNT Libraries
open access

An Analytical Study of Mily Alekseyevich Balakirev's Musical Style in his Early Piano and Orchestra Works: Grande Fantaisie on Russian Folk Songs and Concerto Op.1 in F# Minor.

Description: Balakirev's two early piano and orchestra works, Grande Fantaisie on Russian Folk Songs and Concerto Op. 1 in F# Minor, were composed in the middle of the nineteenth century when in Russia there were no particularly important works for piano and orchestra. Balakirev was still a teenager when he wrote these two pieces and unfortunately both remained unfinished. However the beauty and remarkable compositional achievement of these works should be highly recognized. There are six chapters in thi… more
Date: May 2007
Creator: Kim, Miyang
Partner: UNT Libraries
open access

Purification, Characterization and Receptor Binding of Human Colony-Stimulating Factor-1

Description: Human colony-stimulating factor-1 (CSF-1) was purified from the serum-free conditioned medium of a human pancreatic carcinoma cell line. The four-step procedure included chromatography on DEAE Sepharose, Con A Sepharose and HPLC on phenyl column and reverse-phase C-3 column. The purity of human CSF-1 was demonstrated by sodium dodecyl sulfatepolyacrylamide gel electrophoresis (SDS—PAGE) as a single diffuse band with a molecular weight (Mr) of 42,000-50,000 and was further confirmed by a single … more
Date: May 1987
Creator: Shieh, Jae-Hung
Partner: UNT Libraries
open access

Regulation of Colony-Stimulating Factor-1 Biosynthesis

Description: Recent studies suggest that synthesis of the Colony-stimulating factor (CSF) is a well regulated process. However, the molecular mechanisms of the signal transduction of the various inducers of CSF such as monokines and lymphokines are not well understood. Using Interleukin 1 (IL-1) stimulation of CSF-1 in the MIA PaCa-2 cell line as a model system, the involvement of G-protein has been studied. The IL-1 induction of CSF-1 synthesis can be inhibited by both Pertussis toxin and Cholera toxin, wh… more
Date: May 1990
Creator: Ku, Chun-Ying
Partner: UNT Libraries

Defining Components Linked to Bacterial Nutritional Utilization of Cyanide as a Sole Nitrogen Source

Description: One of the challenges in biology is placing a function on the myriad of gene sequences having become available from rapid advances in genome sequencing. One such example is a gene cluster (Nit1C) found in bacteria that is tied to the unusual ability of certain bacteria to grow when supplied cyanide as the sole nitrogen source. The term cyanotrophs has been applied to such bacteria, for which a genetic linkage between cyanotrophy and Nit1C was demonstrated for 10 separate bacteria. In additio… more
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: May 2019
Creator: Jones, Lauren Brittany
Partner: UNT Libraries
open access

Cyril Scott's Piano Sonata, Op. 66: A Study of His Innovative Musical Language, With Three Recitals of Selected Works by Mozart, Schumann, Scriabin, Debussy, Ravel and Others

Description: The objective of the dissertation is to examine Cyril Scott's musical language as exhibited in his Piano Sonata, Op. 66. Subjects of discussion include Scott's use of form, rhythm, melody, tonality, and harmony. Also included are a biographical sketch of the composer and his philosophical view of modernism. A comparison of the original version and the revised edition of this sonata, as well as references to Cyril Scott's two other piano sonatas are also included during the examination of his ha… more
Date: May 1995
Creator: Cheung, Ching-Loh
Partner: UNT Libraries
open access

The Influence of the First Amendment on Academic Freedom

Description: Academic freedom has gone through three distinct eras yet each era overlaps a great deal with the one following it. The first era was the bureaucratic. It was exemplified by the negotiations between administrators and professors in the 1920s. The American Association of University Professors and the American Association of Colleges began cooperating and a hierarchical structure emerged, with the tenured professor at the top of the faculty. The second era was the political era and it was mainly … more
Date: May 1990
Creator: Ferdon, Douglas Robert, 1945-
Partner: UNT Libraries
open access

Michael Tippett's piano sonata No. 1: A study of his eclectic approach to the sonata form in the twentieth century, and three recitals with works by Beethoven, Bartok, Bach/Busoni, Schumann, Mozart, Ginastera, Barber, and Chopin

Description: The intent of this dissertation is to investigate Michael Tippett's eclectic approach to the sonata form in the twentieth century as demonstrated in his Sonata No. 1. Topics of discussion include historical background of English music, particularly the English piano sonata, at the turn of the century (chapter 1), biographical information and a general overview of Tippett's music (chapter 2), a brief examination of Tippett's Sonata Nos. 2, 3, and 4 (chapter 3) and a formal analysis of Sonata No.… more
Date: May 1999
Creator: Kwak, Stacy (Stacy Joo Yeon)
Partner: UNT Libraries
open access

Influence of Alice 3: Reducing the Hurdles to Success in a Cs1 Programming Course

Description: Learning the syntax, semantics, and concepts behind software engineering can be a challenging task for many individuals. This paper examines the Alice 3 software, a three-dimensional visual environment for teaching programming concepts, to determine if it is an effective tool for improving student achievement, raising self-efficacy, and engaging students. This study compares the similarities and differences between a Fundamentals of Programming course with and without Alice integrated into the … more
Date: May 2013
Creator: Daly, Tebring
Partner: UNT Libraries
open access

Lowell Liebermann's Concerto No. 1 for Piano and Orchestra, Opus 12: An Historical and Analytical Study

Description: Lowell Liebermann, born in New York City in 1961, is one of America's most distinguished living composers. In addition, he often conducts and performs as pianist in his own works. His musical language is unique and unmistakably rooted in the grand tradition of Western music; however, his style combines old and new, simple and complex, emotional and intellectual aspects. It combines tuneful, catchy melodies with a rich harmonic language, all framed by a strong formal design. This study begin… more
Date: May 2010
Creator: Chang, Hsiao-Ling
Partner: UNT Libraries
open access

The Significance of Dmitri Shostakovich's Piano Sonata Op.12

Description: The aspiration of this dissertation is to bring forth the significance of Shostakovich's Piano Sonata Op.12. This sonata is a hybrid of the German musical tradition, Russian Modernism, and Liszt's thematic transformation technique. It demonstrates Shostakovich's highly intellectual compositional skills influenced by the education that he received at St. Petersburg Conservatory as well as the exposure to modern music in the 1920s. This dissertation discusses composition techniques, such as the h… more
Date: May 2007
Creator: Kan, Ling-Yu
Partner: UNT Libraries
open access

Expansion of Musical Styles, Function of Texture, and Performing Techniques in Brian Lock's Sonic Archaeologies No. 1: A Performance Guide

Description: British composer Brian Lock merges the composition styles of Alexander Goehr, Henryk Górecki and Witold Lutoslawski in his innovative works for instrumental sounds and electronics. His most recent work for flute, Sonic Archaeologies No.1, was premiered at the University of North Texas by Mary Karen Clardy, flute; Brian Lock, piano/electric keyboard; and Daniel Pardo, laptop/live mixing. The purpose of this dissertation is to provide flutists with artistic and technical guidance in preparing thi… more
Date: May 2016
Creator: Pardo, Daniel (Flutist)
Partner: UNT Libraries
open access

Characterizing Noise and Harmonicity: The Structural Function of Contrasting Sonic Components in Electronic Composition

Description: This dissertation examines the role of noise in shaping the form of several recent musical compositions. This study demonstrates how the contrast of noisy sounds and harmonic sounds can impact the structure of compositions. Depending on context, however, the specific use and function of noise can vary substantially from one work to the next. The first portion of this paper describes methods for quantifying noise content using FFT analysis procedures. A number of tests on instrumental and synthe… more
Date: May 2010
Creator: Dribus, John Alexander
Partner: UNT Libraries
open access

Stylistic and Technical Considerations for Pedaling the Debussy Preludes, Together with Three Recitals of Selected Works of L. van Beethoven, A. Berg, J. Brahms, F. Chopin, C. Debussy, W.A. Mozart, S. Prokofieff, A. Schoenberg, F. Schubert, and R. Schumann

Description: The lecture recital was given November 6, 1989. Five Preludes by Claude Debussy were preformed following a lecture on some important considerations of approaching the pedaling complexities in his solo piano works. In addition to the lecture recital, three other solo piano recitals were performed. The first solo recital consisted of works by Franz Schubert and Robert Schumann, and was performed on November 17, 1980. On March 1, 1982, the second solo recital was presented. This performance consis… more
Date: May 1990
Creator: Etheridge, Kay, 1954 Apr. 18-
Partner: UNT Libraries
open access

A Performance Guide for Pearls I and Pearls II by Roland Szentpali

Description: This dissertation is a performance guide for the euphonium solos Pearls I and Pearls II, written by Roland Szentpali. This performance guide allows performers to better understand the jazz styles within each movement and provides them with a resource for performing these particular pieces as well as other jazz influenced pieces. This performance guide is specific to euphonium repertoire and written for euphonium performers and educators. This is also a resource for a solo work in the reperto… more
Date: May 2010
Creator: Buckley, Christopher
Partner: UNT Libraries
open access

Sergei Taneyev (1856-1915): An Analysis of His Piano Concerto in E-flat Major and Its Relationship to Tchaikovsky’s Piano Concerto No.1

Description: This lecture recital seeks to prove that Sergei Taneyev's only piano concerto is a valuable addition to the piano concerto repertoire for historical and theoretical examination. Taneyev's biographical background proves he was one of the major figures in Russian musical life during the late nineteenth century. For one who had such an important role in music history, it is an unfortunate that his music has not been popular. Through letters to contemporary composers and friends, Taneyev's master t… more
Date: May 2007
Creator: Liu, Louise Jiayin
Partner: UNT Libraries
open access

The Impact of Target Revenue Funding on Public School Districts in North Texas

Description: A pre–post case study was conducted to examine how target revenue funding from Texas House Bill 1 (2006) has impacted the school districts within the Texas Education Service Center Region X area. Forced by the courts, the Texas Legislature was required to fix the Texas school finance system because of a de facto statewide property tax it had created by capping school district’s maintenance & operations tax rate at $1.50. Texas Governor Rick Perry used this opportunity to reduce school distric… more
Date: May 2014
Creator: Womack, Dennis E.
Partner: UNT Libraries
open access

The Utilization of Folk Song Elements in Selected Works by Ralph Vaughan Williams and Percy Grainger with Subsequent Treatment Exemplified in the Wind Band music of David Stanhope

Description: An examination of the utilization of folk song elements in the wind band music of Australian composer David Stanhope, represented in two movements ("Lovely Joan" and "Rufford Park Poachers") from his Folk Songs for Band. Sets 1 and 2. Included is an historical overview of English folk music, emphasizing the theoretical properties of the English folk song and the events surrounding the modern renaissance of British folk music. Background information related to the musical development of Vaughan … more
Date: May 1996
Creator: Birdwell, John Cody
Partner: UNT Libraries
open access

Piano Concerto No. 1 In E Minor, by Emil Sauer: A Stylistic and Historical Argument for Its Relevance to the Piano Literature

Description: In 1895, Emil Georg Conrad Sauer (1862-1942), a world-renowned German pianist and former student of Franz Liszt wrote his first piano concerto, which was published five years later in 1900. Sauer performed it extensively to enthusiastic crowds in Europe and the United States while on tour during the next several years. Then it vanished from the concert repertoire. It is no longer performed and has only been commercially recorded once. The purpose of this dissertation is to establish why it migh… more
Date: May 2021
Creator: Ulasiuk, Dzmitry
Partner: UNT Libraries
open access

The employment of historically-informed performance practices in present-day tuba performances of two Italian baroque violoncello transcriptions.

Description: As several Italian baroque violoncello transcriptions have entered the standard performance repertory for both high school and collegiate tubists, and as numerous texts, articles, and baroque performance instruction courses have illuminated a new realm of performance possibilities, no published document has provided specific, thorough, and sample approaches to performance on the tuba of a given piece (or pieces) through a detailed application of materials found in any singular source or combina… more
Date: May 2008
Creator: Coker, Bradley Gene
Partner: UNT Libraries
open access

A comparison of Petar Christoskov’s Op. 1 and Op. 24 Caprices for Solo Violin: The effect of the changing Bulgarian political climate on his compositional style

Description: Bulgaria, though a fairly small Eastern European country, boasts an ancient history of folk traditions and music; however, very few notated works exist due to the people's primitive lifestyle throughout Bulgaria's history. Singing and dancing as well as creating instruments from wood and animal skin were considered an integral part of everyday life, equal to cooking, sewing, herding, or farming; in fact, one almost always accompanied the other. Thus, more than 1500 years of folklore was orally … more
Date: May 2016
Creator: Vassileva, Veronika
Partner: UNT Libraries
Back to Top of Screen