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2013

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(Nhc)-Pd(Ii) Complexes With Hydrophilic Nitrogen Ligands: Catalytic Properties In Neat Water, Hayati̇ Türkmen, Lütfi̇ye Gök, İbrahi̇m Kani̇, Beki̇r Çeti̇nkaya Jan 2013

(Nhc)-Pd(Ii) Complexes With Hydrophilic Nitrogen Ligands: Catalytic Properties In Neat Water, Hayati̇ Türkmen, Lütfi̇ye Gök, İbrahi̇m Kani̇, Beki̇r Çeti̇nkaya

Turkish Journal of Chemistry

The cleavage reactions of the dimers [(NHC)PdX_2]_2 with hydrophilic N-donors, L, afforded the mixed-ligand complexes of the type trans-[(NHC)LPdX_2] (X = Cl or Br; NHC = 1,3-dialkylbenzimidazol-2-ylidene (BIm) or bis(imino)acenaphthene-annulated bis(2,6-diisopropylphenyl)imidazol-2-ylidene (BIAN-IPr); L = diethanolamine (DEA), morpholine (MOR), and 3-pyridinecarboxylic acid (3-PCA)). The new complexes (1--3) were characterized by elemental analysis and spectroscopic methods and the molecular structure of 1a was determined by X-ray diffraction studies. These complexes were applied in the Suzuki--Miyaura cross-coupling reaction of phenylboronic acid with aryl halides in neat water. The activities of catalysts were monitored by gas chromatography--flame ionization detector and nuclear magnetic resonance. Whereas …


Palladium-Edta And Palladium-Edteh_4 Catalyzed Heck Coupling Reactions In Pure Water, Süleyman Gülcemal, Beki̇r Çeti̇nkaya Jan 2013

Palladium-Edta And Palladium-Edteh_4 Catalyzed Heck Coupling Reactions In Pure Water, Süleyman Gülcemal, Beki̇r Çeti̇nkaya

Turkish Journal of Chemistry

Palladium-catalyzed Heck coupling reactions of styrene with bromoarene derivatives are carried out under aerobic conditions in water using water-soluble N,N,N',N'-tetrakis(2-hydroxyethyl)ethylenediamine (EdteH_4) and ethylenediaminetetraacetic acid disodium salt (Na_2EDTA) as ligands. The effect of different bases, catalyst loading, and additives is also monitored. The olefination of bromoarenes with styrene affords the desired products in high yields. The Na_2PdCl_4-Na_2EDTA precatalyst system is also used for the preparative scale (50.0 mmol) synthesis of 4-acetyl-trans-stilbene and 4-styrylbenzaldehyde without a noticeable decrease in the activity. Recycling studies on the Na_2PdCl_4 - Na_2EDTA precatalyst system are also tested in the coupling of 4-bromoacetophenone with styrene.


Synthesis, Characterization, And Biological Activity Of Coordination Polymers Derived From Pyromellitic Dianhydride, Yogesh Patel, Ritu Dixit, Hasmukh Shanubhai Patel Jan 2013

Synthesis, Characterization, And Biological Activity Of Coordination Polymers Derived From Pyromellitic Dianhydride, Yogesh Patel, Ritu Dixit, Hasmukh Shanubhai Patel

Turkish Journal of Chemistry

A new ligand, 2,5-bis(furan-2-ylmethylcarbamoyl)terephthalic acid (BFMTA), was synthesized using 1,2,4,5-benzenetetracarboxylic dianhydride (pyromellitic dianhydride-PMDA) with furan-2-ylmethanamine (2-furfurylamine). New coordination polymers of the ligand (BFMTA) were also prepared using transition metal ions Mn(II), Fe(II), Co(II), Ni(II), Cu(II), and Zn(II) metal salts. The coordination polymers and ligand were characterized by physico-chemical characteristics, magnetic susceptibilities, spectroscopic investigations, and thermogravimetry. Antimicrobial activity was tested using the agar-plate method against various strains of bacteria and spores of fungi. The results showed significantly higher antimicrobial activity of coordination polymers compared to the ligand.


Simple And Convenient Preparation Of Novel 6,8-Disubstituted Quinoline Derivatives And Their Promising Anticancer Activities, Sali̇h Ökten, Osman Çakmak, Ramazan Erenler, Önem Yüce Şahi̇n, Şaban Teki̇n Jan 2013

Simple And Convenient Preparation Of Novel 6,8-Disubstituted Quinoline Derivatives And Their Promising Anticancer Activities, Sali̇h Ökten, Osman Çakmak, Ramazan Erenler, Önem Yüce Şahi̇n, Şaban Teki̇n

Turkish Journal of Chemistry

A short and easy route is described for 6,8-disubstituted derivatives of quinoline and 1,2,3,4-tetrahydroquinoli- ne from 6,8-dibromoquinolines 2 and 7 by various substitution reactions. While copper-promoted substitution of 6,8-dibromide 2 produced monomethoxides 3 and 4, a prolonged reaction time mainly afforded dimethoxide 6 instead of 5, whose aromatization with DDQ and substitution reaction of dibromide 7 with NaOMe in the presence of CuI also gave rise to dimethoxide 6. Several 6,8-disubstituted quinolines were obtained by treatment of 6,8-dibromoquinoline (7) with n-BuLi followed by trapping with an electrophile [Si(Me)_3Cl, S_2(Me)_2, and DMF]. Furthermore, 7 was also converted to mono and dicyano …


Self-Regulatory Skills For Controlled Eating Emanating From Newly Initiated Physical Activity, James J. Annesi Ph.D., Kandice Johnson Porter Jan 2013

Self-Regulatory Skills For Controlled Eating Emanating From Newly Initiated Physical Activity, James J. Annesi Ph.D., Kandice Johnson Porter

Journal of Social, Behavioral, and Health Sciences

The relationship of physical activity with weight loss may largely be due to its association with psychosocial factors. The goal of this research was to clarify such relationships using a field design lasting 24 weeks. In Study 1, change in self-regulation for controlled eating, but not energy expenditure, mediated the relationship between changes in physical activity and weight in formerly sedentary, severely obese adults (n = 174). In Study 2 (n = 148), the addition of a cognitive-behavioral nutrition treatment was associated with significantly greater improvement in self-regulation for eating. Physical activity-related self-regulation changes were related to those …


The Road To “Severe Obesity”: Weight Loss Surgery Candidates Talk About Their Histories Of Weight Gain, Julia Temple Newhook, Deborah Gregory, Laurie Twells Jan 2013

The Road To “Severe Obesity”: Weight Loss Surgery Candidates Talk About Their Histories Of Weight Gain, Julia Temple Newhook, Deborah Gregory, Laurie Twells

Journal of Social, Behavioral, and Health Sciences

Much research focuses on the causes of weight gain, but few studies examine the perspectives of those who have been categorized as “severely obese.” This paper discusses the findings of 54 interviews with weight loss surgery candidates in Newfoundland and Labrador, Canada. We explore participants’ perspectives on their histories of weight gain, focusing on their explanations for weight gain as well as the emotions surrounding their weight gain experiences. We find that the dominant individualized, medicalized construction of obesity both (1) adds to the burden of blame for weight loss surgery candidates, with potential emotional health implications, and (2) overlooks …


Seeing Is Believing: The Csi Effect Among Jurors In Malicious Wounding Cases, Corey Call, Amy K. Cook, John D. Reitzel, Robyn D. Mcdougle Jan 2013

Seeing Is Believing: The Csi Effect Among Jurors In Malicious Wounding Cases, Corey Call, Amy K. Cook, John D. Reitzel, Robyn D. Mcdougle

Journal of Social, Behavioral, and Health Sciences

With the popularization of television crime shows that focus heavily on forensic science, such as CSI and its spin-offs, concerns about a new threat to jury trials have emerged in recent years. Dubbed the “CSI effect,” this phenomenon has reportedly come to influence the way jurors perceive forensic evidence at trials based on the way forensic evidence is presented on television. While the CSI effect has been the topic of much discussion throughout the popular press, the CSI effect has seldom been empirically tested. In this study, we present a selection of media accounts as well as criminological and …


Distributions Of Particulate Heme B In The Atlantic And Southern Oceans- Implications For Electron Transport In Phytoplankton, Martha Gledhill, Eric P. Achterberg, David J. Honey, Maria C. Nielsdottir, Micha J.A. Rijkenberg Jan 2013

Distributions Of Particulate Heme B In The Atlantic And Southern Oceans- Implications For Electron Transport In Phytoplankton, Martha Gledhill, Eric P. Achterberg, David J. Honey, Maria C. Nielsdottir, Micha J.A. Rijkenberg

OES Faculty Publications

Concentrations of heme b, the iron-containing component of b-type hemoproteins, ranged from b concentrations were enhanced in the photic zone and decreased with depth. Heme b concentrations correlated positively with chlorophyll a (chl a) in the TNA (r=0.41, pb did not correlate with chl a in the IB or SS. In the IB and SS, stations with high-chlorophyll and low-nutrient (Fe and/or Si) concentrations exhibited low heme bconcentrations relative to particulate organic carbon (< 0.1 μmolmol-1, and high chl a:heme b ratios (> 500). High chl a:heme b ratios resulted from relative decreases in …


Synthesis And Cytotoxic Activity Of Some 2-(2,3-Dioxo-2,3-Dihydro-1h-Indol-1-Yl)Acetamide Derivatives, Özlem Akgül, Ayşe Hande Tari̇koğullari, Fadi̇me Aydin Köse, Petek Ballar Kirmizibayrak, Mehmet Varol Pabuççuoğlu Jan 2013

Synthesis And Cytotoxic Activity Of Some 2-(2,3-Dioxo-2,3-Dihydro-1h-Indol-1-Yl)Acetamide Derivatives, Özlem Akgül, Ayşe Hande Tari̇koğullari, Fadi̇me Aydin Köse, Petek Ballar Kirmizibayrak, Mehmet Varol Pabuççuoğlu

Turkish Journal of Chemistry

Isatin, 1H-indoline-2,3-dione, an endogenous compound, is also a synthetically versatile molecule that possesses a diversity of biological activities including anticonvulsant, antibacterial, antifungal, antiviral, anticancer, and cytotoxic properties. Based on the promising cytotoxic activity studies on N-substituted isatin derivatives, a series of 18 derivatives of 2-(2,3-dioxo-2,3-dihydro- 1H-indol-1-yl)-N-phenylacetamide were designed, synthesized, and characterized according to their analytical and spectral data. All of the compounds were evaluated for their cytotoxic activity against MCF7, A549, HeLa, and HEK293 cell lines by real time cell analyzer. Etoposide was used as a standard compound. Briefly, ortho substitutions gave better results compared to meta and para substitutions …


Antimicrobial Activity And Chemical Composition Of The Essential Oils Of Mosses (Hylocomium Splendens (Hedw.) Schimp. And Leucodon Sciuroides (Hedw.) Schwägr.) Growing In Turkey, Tayyi̇be Beyza Cansu, Büşra Yayli, Turan Özdemi̇r, Nevzat Batan, Şengül Alpay Karaoğlu, Nuretti̇n Yayli Jan 2013

Antimicrobial Activity And Chemical Composition Of The Essential Oils Of Mosses (Hylocomium Splendens (Hedw.) Schimp. And Leucodon Sciuroides (Hedw.) Schwägr.) Growing In Turkey, Tayyi̇be Beyza Cansu, Büşra Yayli, Turan Özdemi̇r, Nevzat Batan, Şengül Alpay Karaoğlu, Nuretti̇n Yayli

Turkish Journal of Chemistry

In the present work, the volatiles of mosses [Hylocomium splendens (Hedw.) Schimp. (Hylocomiaceae) and Leucodon sciuroides (Hedw.) Schwägr. (Leucodontaceae)] have been investigated by GC-FID and GC/MS. Fifty-eight compounds in the oil of H. splendens, representing 75.4%, and 41 compounds in the oil of L. sciuroides, representing 87.6%, were identified. The major components were found to be \beta-pinene (11.6%) and \alpha-pinene (8.9%) in the oil of H. splendens, and nonanal (26.8%) and heptanal (13.7%) in the oil of L. sciuroides. The essential oil of H. splendens was rich in monoterpenes (30.8%), and aldehydes (49.9%) were the major constituents in the oil …


Development And Deployment Of A Point-Source Digital Inline Holographic Microscope For The Study Of Plankton And Particles To A Depth Of 6000 M, Alexander B. Bochdansky, Manfred H. Jericho, Gerhard J. Herndl Jan 2013

Development And Deployment Of A Point-Source Digital Inline Holographic Microscope For The Study Of Plankton And Particles To A Depth Of 6000 M, Alexander B. Bochdansky, Manfred H. Jericho, Gerhard J. Herndl

OES Faculty Publications

Bochdansky, A. B., Jericho, M. H., & Herndl, G. J. (2013). Development and deployment of a point-source digital inline holographic microscope for the study of plankton and particles to a depth of 6000 m. Limnology and Oceanography: Methods, 11, 28-40. doi: 10.4319/lom.2013.11.28


It's A Long Drive To Town: A Socio-Spatial Analysis Of Food Accessibility In Rural Illinois, Charles Jr. Yeager Jan 2013

It's A Long Drive To Town: A Socio-Spatial Analysis Of Food Accessibility In Rural Illinois, Charles Jr. Yeager

All-Inclusive List of Electronic Theses and Dissertations

How does the rural landscape impact accessibility to healthy food options and, in turn, the health of residents? There is a great deal of evidence suggesting that sparse rural landscapes are important factors in shaping how, or if, people can readily obtain fresh and healthy food. Although the economies of many rural areas, including Southern Illinois, are heavily reliant upon agriculture, some groups may not have equal access to healthy foods, even though they may conduct most of their daily activities surrounded by acres of agricultural fields. For many rural residents, the simple act of buying groceries can pose serious …


Diatom Proteomics Reveals Unique Acclimation Strategies To Mitigate Fe Limitation, Brook L. Nunn, Jessica F. Faux, Anna A. Hippman, Maria T. Maldonado, H. Rodger Harvey, David R. Goodlett, Philip W. Boyd, Robert F. Strzepek Jan 2013

Diatom Proteomics Reveals Unique Acclimation Strategies To Mitigate Fe Limitation, Brook L. Nunn, Jessica F. Faux, Anna A. Hippman, Maria T. Maldonado, H. Rodger Harvey, David R. Goodlett, Philip W. Boyd, Robert F. Strzepek

OES Faculty Publications

Phytoplankton growth rates are limited by the supply of iron (Fe) in approximately one third of the open ocean, with major implications for carbon dioxide sequestration and carbon (C) biogeochemistry. To date, understanding how alteration of Fe supply changes phytoplankton physiology has focused on traditional metrics such as growth rate, elemental composition, and biophysical measurements such as photosynthetic competence (Fv/Fm). Researchers have subsequently employed transcriptomics to probe relationships between changes in Fe supply and phytoplankton physiology. Recently, studies have investigated longer-term (i.e. following acclimation) responses of phytoplankton to various Fe conditions. In the present study, the coastal diatom, Thalassiosira pseudonana, …


Large-Scale Cloudscapes Using Noise, Mario Rosa Jan 2013

Large-Scale Cloudscapes Using Noise, Mario Rosa

Theses

Clouds have been of particular interest in computer graphics due to the challenge they present. Clouds are considered fuzzy objects, and need specialized algorithms to model and render realistically. Many techniques exist to model and render clouds that have had much success. This research will take existing techniques in cloud modeling and rendering and create a new technique combining those with noise. The idea is that noise can be used to model large-scale repeatable 3D cloudscapes and to be able to model such cloudscapes much more quickly than current techniques. This would be beneficial to developers of virtual universes that …


Sport Prism, Scott Howard Jan 2013

Sport Prism, Scott Howard

Theses

The Sport Prism explores the development and implementation of a cohesive brand identity metaphor for a sport complex across multiple media. The metaphor that significantly impacts the design of this brand is the geometric prism. The concept of geometric prisms is paired with sport imagery to create a unique and compelling brand experience. The Sport Prism frames relationships between the sport complex and the prism in intriguing ways, creating new meaning and ultimately a unique brand identity.


A Haunting, Zachary Goetz Jan 2013

A Haunting, Zachary Goetz

Theses

"A Haunting" explores the possible existence of supernatural entities and visually renders my personal encounters with spirit presences through poetry, sculpture, painting, performance, and video. My thesis work does not attempt to answer questions about these experiences, but instead provides visual impressions of them. I use the human figure to illustrate the dichotomy between presence and absence. The physicality of presence is referenced though the use of metals and the qualities of absence through the incorporation of gauzes and sheer fabrics. This body of work also explores the connotations and undertones attached to a figure or effigy when it is …


Kosovo’S Comparative Advantages: The Agriculture Sector [Presentation Given August 15, 2013], Arzana Myderrizi Jan 2013

Kosovo’S Comparative Advantages: The Agriculture Sector [Presentation Given August 15, 2013], Arzana Myderrizi

Theses

Not provided.


The "War On Terror," Mortality Salience, And American Prejudice Before And After The 2013 Boston Marathon Bombings, Arthur Hatton Jan 2013

The "War On Terror," Mortality Salience, And American Prejudice Before And After The 2013 Boston Marathon Bombings, Arthur Hatton

College of Graduate Studies: Theses & Dissertations

The United States’ counterterrorism efforts have been framed in various ways in the media and politics, and each framing metaphor varies in its ability to accurately describe counterterrorism (Kruglanski, Crenshaw, Post, & Victoroff, 2007). Each frame also may have effects on the way the public perceives, responds to, and finds acceptable in counterterrorism. One common framing metaphor in American politics is counterterrorism as a “War on Terror.” Terror Management Theory (TMT) predicts that reminding people of mortality has predictable effects on their opinions and behavior. This study seeks to test empirically whether framing counterterrorism as a “War on Terror” acts …


Special Education Teacher Retention: The Relationship Between Mentoring, Job Satisfaction And The Retention Of Special Education Teachers, Angela Horrison-Collier Jan 2013

Special Education Teacher Retention: The Relationship Between Mentoring, Job Satisfaction And The Retention Of Special Education Teachers, Angela Horrison-Collier

College of Graduate Studies: Theses & Dissertations

The causes of the teacher shortage are complex; however, the retention of special education teachers is a significant contributor to this shortage. Some research has indicated that up to 9.3 % of special education teachers leave the field at the end of their first year of teaching and 7.4 % move to general education yearly. Therefore, school districts face a continuous cycle of recruitment, hiring, and induction. Because of the pivotal value of retention, school districts and site level education leaders must take proactive steps to reduce the retention rate. The research on teacher retention indicates factors such as salary, …


2012-2013 Georgia Southern University Men's Golf Statistics, Georgia Southern University Jan 2013

2012-2013 Georgia Southern University Men's Golf Statistics, Georgia Southern University

Men's Golf Records

  • Georgia Southern Eagles 2012-13 Men's Golf Statistics


The Lantern Walk, Georgia Southern University Jan 2013

The Lantern Walk, Georgia Southern University

George-Anne Media Group: Newsletters & Magazines

  • Fall 2013 Ceremonies
  • History of the Lantern Walk
  • A Letter from the President
  • Through the Years


Atrakcyjność Inwestowania W Regionach Słabo Rozwiniętych, Mirosław Przygoda Jan 2013

Atrakcyjność Inwestowania W Regionach Słabo Rozwiniętych, Mirosław Przygoda

Monografie/Monographs

Monografia jest poświęcona zagadnieniom związanym z atrakcyjnością inwestowania na terenach słabo rozwiniętych. Wybór tematu był następstwem zauważalnego procesu zwiększania się znaczenia regionów i kreowania związanej z nimi polityki zarówno w Polsce, jak i na świecie. Obecnie rola regionów polega w dużej mierze na zagospodarowaniu potencjału, jaki skumulowany jest w społeczeństwie i wykorzystaniu go jako instrumentu służącego zagwarantowaniu ciągłego i niezakłóconego postępu Chodzi tutaj między innymi o wykazywaną przez mieszkańców przedsiębiorczość oraz innowacyjność w szukaniu rozwiązań, inicjatywę obywatelską, zaangażowanie w realizację zaplanowanych projektów i chęć polepszenia warunków własnego życia. Oblicze danego terytorium stanowi odbicie dążeń i ambicji zamieszkującej go populacji ludzkiej …


Społeczna Odpowiedzialność Biznesu, Marcin Żemigała Jan 2013

Społeczna Odpowiedzialność Biznesu, Marcin Żemigała

Monografie/Monographs

Społeczna odpowiedzialność biznesu w świetle analiz bibliometrycznych i opinii pracowników na temat równowagi między życiem zawodowym a prywatnym.Społeczna odpowiedzialność biznesu to koncepcja, która w ostatnich latach jest często poruszana zarówno w teorii, jak i w praktyce zarządzania. Widać jednak wyraźnie, że brakuje koncepcyjnego uporządkowania pojawiających się modeli teoretycznych i narzędzi praktycznych. Brakuje także pozycji dotyczących kategoryzacji społecznej odpowiedzialności biznesu, która pozwoliłaby na ukazanie z czym powinna być ona wiązana w najwyższym stopniu, a z jakimi aspektami wiąże się w stopniu mniejszym. Cel niniejszej pracy składa się z dwóch elementów. Pierwszym jest dokonanie eksploracji obszaru społecznej odpowiedzialności biznesu, określenie występujących koncentracji …


Mikrofirmy Siłą Napędową Gospodarki Mazowsza, Alojzy Z. Nowak, Mariusz Szałański Jan 2013

Mikrofirmy Siłą Napędową Gospodarki Mazowsza, Alojzy Z. Nowak, Mariusz Szałański

Monografie/Monographs

Jest to już szósta, doroczna, monografia prezentująca znaczącą część dorobku badawczego pracowników naukowych Wydziału Zarządzania Uniwersytetu Warszawskiego, dotycząca różnorodnych zagadnień związanych z rozwojem regionu mazowieckiego i Polski. Przedmiotem badań uczyniono rozwój sektora małych i średnich przedsiębiorstw, a w szczególności firm mikro oraz ich wpływu na podniesienie przedsiębiorczości i konkurencyjności regionu i całej polskiej gospodarki. Mamy nadzieję, że tak jak w przypadku poprzednich publikacji, wyniki badań zaprezentowane w tej monografii, dotyczące sektora MSP, okażą się przydatne przy realizacji strategii rozwoju regionalnego na Mazowszu, a może także posłużą wypracowaniu mechanizmów generujących rozwój gospodarczy w Polsce.


Not All That Glitters Is Gold: The Effect Of Attention And Blogs On The Investors' Investing Behaviors, Nan Hu, Yi Dong, Ling Liu, Lee J. Yao Jan 2013

Not All That Glitters Is Gold: The Effect Of Attention And Blogs On The Investors' Investing Behaviors, Nan Hu, Yi Dong, Ling Liu, Lee J. Yao

Research Collection School Of Computing and Information Systems

This article investigates the relationship between a firm’s visibility in blogspaces, termed blog exposure, and the cross-sectional stock returns. We show that blog exposure is fundamentally different from the traditional media coverage, and securities with low blog exposure earn higher returns than stocks with high blog exposure. We further illustrate that such an effect is more prominent for stocks with low institutional ownership. Contrary to traditional media coverage, the return premium associated with blog exposure cannot be explained by either the illiquidity hypothesis or the investor recognition hypothesis based on the rational-agent framework. Instead, our results suggest that blog effect …


Characterization Of Phd Degradation By Clpxp, Nikki Mertz Jan 2013

Characterization Of Phd Degradation By Clpxp, Nikki Mertz

Theses

Proteolysis of Phd is required for the addictive response. ClpXP recognizes and degrades the Phd protein of the P1 plasmid addiction operon, however its mechanism of degradation is currently unknown. The RssB and SspB proteins aid ClpXP in degrading other substrates, so these might also play a role in the proteolysis of Phd. A temperature sensitive plasmid was introduced with and without the P1 plasmid addiction operon to strains containing knockout mutants of the rssB and sspB genes. An addiction assay was performed using these constructs by incubating cells at restrictive and permissive temperatures for plasmid replication. Mutations in rssB …


Hyperspectral Remote Sensing Of Water Quality In Lake Atitlan, Guatemala, Africa Ixmucane Flores Cordova Jan 2013

Hyperspectral Remote Sensing Of Water Quality In Lake Atitlan, Guatemala, Africa Ixmucane Flores Cordova

Theses

Lake Atitlan in Guatemala is a vital source of drinking water. The deteriorating conditions of water quality in this lake threaten human and ecological health as well as the local and national economy. Given the sporadic and limited measurements available, it is impossible to determine the changing conditions of water quality. The goal of this thesis is to use Hyperion satellite images to measure water quality parameters in Lake Atitlan. For this purpose in situ measurements and satellite-derived reflectance data were analyzed to generate an algorithm that estimated Chlorophyll concentrations. This research provides for the first time a quantitative application …


Biochemical Characterization Of Peptidyl-Trna Hydrolase 1 From S. Aureus And B. Cereus, Kasey Taylor Creel Jan 2013

Biochemical Characterization Of Peptidyl-Trna Hydrolase 1 From S. Aureus And B. Cereus, Kasey Taylor Creel

Theses

The critical need for new antibiotics and antibiotic targets is of great urgency to our society in order to combat drug resistance and ward off pathogenic bacteria. One new antibacterial target is the essential bacterial enzyme Peptidyl-tRNA Hydrolase I (Pth1). In the course of protein elongation, ribosomes stall and release peptidyl-tRNA. Peptidyl-tRNA hydrolase 1 releases the tRNA from the peptidyl-tRNA, allowing the tRNA to be recycled in the cell. Without Pthl hydrolysis, peptidyl-tRNAs will accumulate, slowing down and eventually stopping protein synthesis, leading to cell death. The fact that Pthl is an essential gene in E. coli suggests that its …


Performance And Energy Efficiency Of Common Compression/Decompression Utilities : An Experimental Study In Mobile And Workstation Computer Platforms, Armen A. Dzhagaryan Jan 2013

Performance And Energy Efficiency Of Common Compression/Decompression Utilities : An Experimental Study In Mobile And Workstation Computer Platforms, Armen A. Dzhagaryan

Theses

Lossless compression and decompression are routinely used in mobile and workstation computer systems to reduce the costs of communicating and storing data. This research presents the results of a measurement-based experimental evaluation of common compression and decompression utilities running on several plat-forms of varying hardware complexity representing current mobile and workstation systems. The evaluation involves characterization of the compression and decompression utilities in a multidimensional space encompassing the compression ratio, compression and decompression throughput, and energy efficiency. Different use scenarios and conditioning typical for modern mobile and workstation computing platforms are considered. The study observes a wide variety of energy …


Generation Of Radio Frequency Induced Metastable Xenon As A Gain Medium For Diode Pumped Rare Gas Laser Systems, Jacqueline Marie Andreozzi Jan 2013

Generation Of Radio Frequency Induced Metastable Xenon As A Gain Medium For Diode Pumped Rare Gas Laser Systems, Jacqueline Marie Andreozzi

Theses

The pursuit of novel, hybrid methods of achieving lasing from the rare gases has recently been a topic of interest in the field of high energy laser systems. This investigation presents the construction and execution of an experimental setup designed to generate metastable xenon (Xe*) to determine its potential to perform as a high power laser gain medium in a similar capacity as the alkali metals in Diode Pumped Alkali Lasers. A capacitively coupled radio frequency discharge was used to light plasma from naturally abundant xenon, thus exciting the 6s[3/2]2 metastable state. The metastable xenon was probed with a …