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2019

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Electrodeposition Of Tin(Ii) From Citrate Complexes, Yuliya Yapontseva, Valeriy Kublanovsky Jan 2019

Electrodeposition Of Tin(Ii) From Citrate Complexes, Yuliya Yapontseva, Valeriy Kublanovsky

Turkish Journal of Chemistry

This paper provides the calculation of the distribution of the concentrations of complex particles of the Sn(II) - citrate - water system in the solution volume, on the surface of the electrode, and in the diffusion layer for the tin citrate electrolyte containing an excess of the ligand. Based on the calculations for the electrodeposition of tin, an electrolyte containing [SnCit]$^{2-}$ complex at pH 8.0 was chosen. The kinetic parameters of the discharge stage, the diffusion coefficient of the electrochemical active ion, and the current efficiency of tin were determined by the methods of stationary voltammetry and chronovoltamperometry. It is …

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Novel "Turn Off-On" Sensors For Detection Of Dna-Acrylamide Interaction Using Zns Quantum Dots As A Phosphorescent Probe, Hayri̇ye Eda Şatana Kara Jan 2019

Novel "Turn Off-On" Sensors For Detection Of Dna-Acrylamide Interaction Using Zns Quantum Dots As A Phosphorescent Probe, Hayri̇ye Eda Şatana Kara

Turkish Journal of Chemistry

A novel "turn off-on" sensor for detection of interaction between DNA and acrylamide (ACR) was developed. In this method, L-cysteine capped Mn-doped ZnS quantum dots (QDs) were used as room temperature phosphorescent probes. In the ``turn-off'' mode, ACR was absorbed onto the surface of QDs via electrostatic interaction, which caused a quenching effect of room-temperature phosphorescence signal by photoinduced electron-transfer mechanism. ACR was removed from the QDs' surface with the addition of DNA. Thus, the phosphorescence emission of QDs was recovered and the system was turned to the ``turn-on'' mode. The quenching mechanism of QDs by ACR was collisional (dynamic) …

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Synthesis Of Novel Azo Linkage-Based Schiff Bases Including Anthranilic Acid And Hexanoic Acid Moieties: Investigation Of Azo-Hydrazone And Phenol-Keto Tautomerism, Solvatochromism, And Ionochromism, Özlem Özdemi̇r Jan 2019

Synthesis Of Novel Azo Linkage-Based Schiff Bases Including Anthranilic Acid And Hexanoic Acid Moieties: Investigation Of Azo-Hydrazone And Phenol-Keto Tautomerism, Solvatochromism, And Ionochromism, Özlem Özdemi̇r

Turkish Journal of Chemistry

Two new azo-Schiff base receptors (L$_{{1}}$ and L$_{{2}})$ containing azo and azomethine groups with a conjugated group (benzyl ring of anthranilic acid, in L$_{{1}})$ and electron-donating group (alkyl chain of hexanoic acid, in L$_{{2}})$ were synthesized and characterized. Azo-hydrazone/phenol-keto tautomerism and solvatochromism were investigated. Studying their sensing ability towards cations (Co$^{2+}$, Cu$^{2+}$, Zn$^{2+}$, Ni$^{2+}$, Pb$^{2+}$, Cd$^{2+}$, Mn$^{2+}$, Fe$^{3+}$, Cr$^{3+}$, and Al$^{3+})$, high sensitivity and selectivity were recorded for Fe$^{3+}$ by naked eye and UV-Vis spectra in DMF-aqueous HEPES buffer (v:v, 1:1, pH 6.8). The color of L$_{{1}}$ and L$_{{2}})$ solutions instantly changed from yellow to deep orange and pale orange. …

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Progress In The Chemistry Of 3-Amino-9-Ethylcarbazole, Samir Bondock, Salwa Alqahtani, Ahmed M. Fouda Jan 2019

Progress In The Chemistry Of 3-Amino-9-Ethylcarbazole, Samir Bondock, Salwa Alqahtani, Ahmed M. Fouda

Turkish Journal of Chemistry

Generally, 3-amino-9-ethylcarbazole is considered a versatile compound not only for its unique electronic properties but also for its significance as a building block in synthetic, pharmaceutical, and material chemistry. The synthesis, chemical reactivity, and applications of 3-amino-9-ethylcarbazole are described in this review. The presence of the amino group at position 3 exhibits a unique reactivity with both C-2 and C-4. The reactions of 3-amino-9-ethylcarbazole are divided into three categories, reactions that involve the amino group and cyclization reactions that involve the amino group and C-2 and/or C-4. In this review, relevant and appropriate applications of the synthesized, isolated, and condensed …

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A Fast And Convenient Analysis Method For The Determination Of Cations In Pomegranate Juices By Capillary Electrophoresis With Contactless Conductivity Detection, Veseli̇na Adimcilar, Nevi̇n Özteki̇n Jan 2019

A Fast And Convenient Analysis Method For The Determination Of Cations In Pomegranate Juices By Capillary Electrophoresis With Contactless Conductivity Detection, Veseli̇na Adimcilar, Nevi̇n Özteki̇n

Turkish Journal of Chemistry

Health beneficial effect of pomegranate is mainly due to its confirmed high antioxidant capacity and polyphenolic content. In recent years, experimental and clinical studies have shown that pomegranate intake lowers blood pressure. Potassium and other minerals such as calcium and magnesium may be responsible for this property. In this study, a rapid, economic, reliable, and applicable capillary electrophoresis method was proposed with contactless conductivity detection for the quantitative determination of six cations in different pomegranate juices. The correlation between these cation contents of eight different pomegranate juices was evaluated by using one-way ANOVA and Duncan's multiple-range test. The optimum buffer …

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Pore Length- And Ion Concentration-Dependent Ionic Current In Cylindrical Nanopores: An Atomistic Molecular Dynamics Study, Nazar İleri̇ Ercan Jan 2019

Pore Length- And Ion Concentration-Dependent Ionic Current In Cylindrical Nanopores: An Atomistic Molecular Dynamics Study, Nazar İleri̇ Ercan

Turkish Journal of Chemistry

The sensing of individual molecules as they pass through nanopores under an external field is a popular research field. The approach is simply based on the detectable temporary blockades in the ionic current as the molecules pass through the nanopores. These signatures of the current have been shown to be a function of nanoparticle and nanopore size and geometry as well as the external electric field. However, models developed in this context fail to predict the experimentally observed behavior in technologically important shorter nanopores. Here we present atomistic molecular dynamics simulation results from colloidal nanoparticle translocation through mid-to-low aspect ratio …

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Synthesis, Crystal Structure, And Characterization Of Two Heterometallic Transition Metal Citrate Complexes [M $=$ Co(Ii) And Cd(Ii)], Zeki̇ Kartal, Onur Şahi̇n, Abdülkeri̇m Yavuz Jan 2019

Synthesis, Crystal Structure, And Characterization Of Two Heterometallic Transition Metal Citrate Complexes [M $=$ Co(Ii) And Cd(Ii)], Zeki̇ Kartal, Onur Şahi̇n, Abdülkeri̇m Yavuz

Turkish Journal of Chemistry

In this study, two heterometallic transition metal complexes with the formulas [CoK$_{4}(\mu _{10}$-C$_{6}$H$_{5}$O$_{7})_{2}$]$_{n}$ and [CdK($\mu _{8}$-C$_{6}$H$_{5}$O$_{7})(\mu $-H$_{2}$O)(H$_{2}$O)]$_{n}$ were synthesized as crystalline compounds. The structures of\textbf{ }these crystalline metal complexes were characterized by their spectral analyses (FT-IR, FT-Raman, thermal analysis, magnetic properties, and single-crystal X-ray diffraction techniques). According to the spectral data of the new metal complexes obtained, both metal complexes are in the monoclinic crystal system and in the P2$_{1}$/c and P2$_{1}$ space groups, respectively. The asymmetric unit of the metal complex [CoK$_{4}(\mu _{10}$-C$_{6}$H$_{5}$O$_{7})_{2}$]$_{n}$ contains one Co(II) ion, two potassium cations, and one (C$_{6}$H$_{5}$O$_{7})$ citrate ligand, whereas that of the …

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Synthesis And Antitumor Activities Of 2-(Piperidin-4-Yl)-Thiazole-4-Carboxamides Analogues Of Tubulysins, Xiangfu Peng, Mingsha Shao, Shuchao Ma, Lei Yao Jan 2019

Synthesis And Antitumor Activities Of 2-(Piperidin-4-Yl)-Thiazole-4-Carboxamides Analogues Of Tubulysins, Xiangfu Peng, Mingsha Shao, Shuchao Ma, Lei Yao

Turkish Journal of Chemistry

}Tubulysins are a family of natural products that exhibit potent antitumor activities, which have attracted much attention from synthetic and medicinal chemists. Previous attempts to aromatize the Tuv part of tubulysin analogues led to a loss in antitumor activity, which suggested that the Ile and Tuv fragments of these analogues were adopting different conformations than the natural products. In this study, a series of 2-(piperidin-4-yl)-thiazole-4-carboxamides have been prepared to investigate whether an intramolecular H-bond between key NH and OH groups is responsible for the conformational control. The antitumor activities of these analogues have been screened using MDA-MB-231-breast, Siha-cervical, MCF7-breast, and …

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A Microwave-Assisted Highly Stereoselective One-Pot Wittig Reaction Under Solvent-Free Conditions, Kalyani Rajkumari, Bittu Lama, Lalthazuala Rokhum Jan 2019

A Microwave-Assisted Highly Stereoselective One-Pot Wittig Reaction Under Solvent-Free Conditions, Kalyani Rajkumari, Bittu Lama, Lalthazuala Rokhum

Turkish Journal of Chemistry

We report a novel microwave-assisted two-step, one-pot protocol for the synthesis of olefins (alkenes) via Wittig reaction. The reaction was carried out under solvent-free conditions using basic alumina both as a heterogeneous catalyst and a solid support. Varieties of aromatic aldehydes were converted into their corresponding olefins within 30-50 min with good to excellent yields. An excellent predominance of E-isomers over Z-isomers (up to 100% E-selectivity) for all the olefin products was observed. This showed the attractive stereocontrol of our reported protocol. In addition, owing to the solid-state nature of the reactions, our procedure prevented the need for tedious aqueous …

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Effect Of Brij 35 And Saponin Surfactants On Adsorption Of Diethylstilbestrol As An Emerging Estrogenic Contaminant By Clinoptilolite In Batch And Fixed-Bed Column Experiments, Reyhaneh Saadi, Reza Fazaeli, Leila Vafajoo, Iraj Naser Jan 2019

Effect Of Brij 35 And Saponin Surfactants On Adsorption Of Diethylstilbestrol As An Emerging Estrogenic Contaminant By Clinoptilolite In Batch And Fixed-Bed Column Experiments, Reyhaneh Saadi, Reza Fazaeli, Leila Vafajoo, Iraj Naser

Turkish Journal of Chemistry

In this study, natural clinoptilolite was modified by saponin and Brij 35 surfactants to remove diethylstilbestrol (DES) from wastewater in batch and continuous systems. The optimum pH, amount of adsorbent, contact time, and temperature were 11, 10 g/L, 12 h, and 35 $^{\circ}$C, respectively, for the process. The equilibrium data agreed well with the Langmuir isotherm for natural clinoptilolite (NC), natural clinoptilolite modified by Brij 35 (NC-Brij), and natural clinoptilolite modified by saponin surfactants (NC-saponin) compared to other isotherms. The maximum adsorption capacities resulting from the Langmuir isotherm for NC, NC-Brij, and NC-saponin were 8.012, 23.64, and 39.525 mg/g, respectively. …

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Protonation Behavior Of Dextran Amino Acid Esters, Konrad Hotzel, Lidjia Fras Zemljic, Matej Bracic, Thomas Heinze Jan 2019

Protonation Behavior Of Dextran Amino Acid Esters, Konrad Hotzel, Lidjia Fras Zemljic, Matej Bracic, Thomas Heinze

Turkish Journal of Chemistry

Dextran esters of different amino acids (glycine, $\beta $-alanine, L-ornithine, L-lysine) are investigated regarding their pK$_{a}$ values by potentiometric titration. The pK$_{a}$ values of the dextran derivatives are generally dependent on the position of the amino group in relation to the ester group, i.e. the nearer they are located in the molecule, the lower the resulting pK$_{a}$ values are, L-ornithine ester being the exception. An influence of the polymer backbone is ruled out. Stability against hydrolysis at different pH values and over longer periods at constant pH value is measured by potentiometric and polyelectrolyte titration. The $\beta $-alanine ester shows …

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Parameterization, Kinetics, And Adsorption Isotherm Of Electrocoagulation Process Of Bromothymol Blue In Aqueous Medium Using Aluminum Electrodes, Okon Abakedi, Victor Mkpenie, John Okafor Jan 2019

Parameterization, Kinetics, And Adsorption Isotherm Of Electrocoagulation Process Of Bromothymol Blue In Aqueous Medium Using Aluminum Electrodes, Okon Abakedi, Victor Mkpenie, John Okafor

Turkish Journal of Chemistry

The removal of bromothymol blue (BTB) from aqueous solution was studied by electrocoagulation (EC) technique using aluminum electrodes. The various experimental conditions known to influence the EC process were parameterized, including the effects of temperature, concentration, current density, pH, and treatment time. The results obtained have shown that optimum removal efficiency of 99.9% was realized at a current density of 20 mA/cm$^{2}$ and pH of 4.7. The adsorption process showed a pseudo-first-order kinetic model as the best fit to the EC data. Freundlich and Langmuir adsorption isotherms supported the adsorption of BTB on aluminum hydroxide being the in situ generated …

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Disease Diagnosis And Management: The Experiences Of Hemorrhoid Herbal Vendors And Customers In Oyo State, Nigeria, Abolaji Azeez, Uche Isiugo-Abanihe Jan 2019

Disease Diagnosis And Management: The Experiences Of Hemorrhoid Herbal Vendors And Customers In Oyo State, Nigeria, Abolaji Azeez, Uche Isiugo-Abanihe

Journal of Social, Behavioral, and Health Sciences

Hemorrhoids (or piles) are an anorectal condition that affects many individuals who do not necessarily seek medical support. Many who suffer from this condition resort to home treatment, especially cultural diagnosis and treatment. Consequently, an herbal remedy, popularly known as jedijedi drinks, has gained high patronage but with contested effectiveness. Thus, this study explored the diagnosis and use of hemorrhoid herbal remedy. Using a mixed-methods research design, information was elicited from those who used or sold the remedy at the three points of sales: 107 consumer respondents were surveyed and three herbal vendors were interviewed in Ibadan, Oyo Town, and …

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Public Service Announcements To Promote Physical Activity, Jennifer Erickson, Jay Greiner Jan 2019

Public Service Announcements To Promote Physical Activity, Jennifer Erickson, Jay Greiner

Journal of Social, Behavioral, and Health Sciences

The World Health Organization promotes physical activity (PA) as important for successful maintenance of health, but many individuals are inactive. Despite the potential for public service announcements (PSAs) to communicate health information and promote behavior change, no previous research on developing video PSAs to promote PA was found. The purpose of this quasi-experimental study was to examine how video PSAs designed for public health campaigns affect future levels of intention to engage in PA. The PSAs assessed perceived effectiveness of message foci and the impact of stage of change readiness. They were developed specifically for this study using the model …

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Brexit: A Granger Causality Of Twitter Political Polarisation On The Ftse 100 Index And The Pound, James Usher, Lucia Morales, Pierpaolo Dondio Jan 2019

Brexit: A Granger Causality Of Twitter Political Polarisation On The Ftse 100 Index And The Pound, James Usher, Lucia Morales, Pierpaolo Dondio

Conference papers

BREXIT is the single biggest geopolitical event in British history since WWII. Whilst the political fallout has become a tragicomedy, the political ramifications has had a profound impact on the Pound and the FTSE 100 index. This paper examines Twitter political discourse surrounding the BREXIT withdrawal agreement. In particular we focus on the discussions around four different exit strategies known as “Norway”, “Article 50”, the“Backstop” and “No Deal” and their effect on the pound and FTSE 100 index from the period of rumblings of the cancellation of the Meaning Vote on December 10th 2018 inclusive of second defeat on the …

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Metagenomic Sequencing Identifies Highly Diverse Assemblages Of Dinoflagellate Cysts In Sediments From Ships' Ballast Tanks, Lixia Shang, Zhangxi Hu, Yunyan Deng, Yuyang Liu, Xinyu Zhai, Zhaoyang Chai, Xiaohan Liu, Zifeng Zhan, Fred C. Dobbs, Ying Zhong Tang Jan 2019

Metagenomic Sequencing Identifies Highly Diverse Assemblages Of Dinoflagellate Cysts In Sediments From Ships' Ballast Tanks, Lixia Shang, Zhangxi Hu, Yunyan Deng, Yuyang Liu, Xinyu Zhai, Zhaoyang Chai, Xiaohan Liu, Zifeng Zhan, Fred C. Dobbs, Ying Zhong Tang

OES Faculty Publications

Ships' ballast tanks have long been known as vectors for the introduction of organisms. We applied next-generation sequencing to detect dinoflagellates (mainly as cysts) in 32 ballast tank sediments collected during 2001-2003 from ships entering the Great Lakes or Chesapeake Bay and subsequently archived. Seventy-three dinoflagellates were fully identified to species level by this metagenomic approach and single-cell polymerase chain reaction (PCR)-based sequencing, including 19 toxic species, 36 harmful algal bloom (HAB) forming species, 22 previously unreported as producing cysts, and 55 reported from ballast tank sediments for the first time (including 13 freshwater species), plus 545 operational taxonomic units …

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Mid-Atlantic Oil Spill Workshop: Are We Ready? A Regional Workshop As Part Of The National Academies And Sea Grant Collaborative Workshop Series, G. Walker, M. Covi Jan 2019

Mid-Atlantic Oil Spill Workshop: Are We Ready? A Regional Workshop As Part Of The National Academies And Sea Grant Collaborative Workshop Series, G. Walker, M. Covi

OES Faculty Publications

(First paragraph) In 2017, the Gulf Research Program (GRP) and the Health and Medical Division of the National Academies of Sciences, Engineering, and Medicine hosted a workshop to prepare for and respond to major marine oil spills. To address gaps identified at the workshop, GRP reached out to the Sea Grant Oil Spill Science Outreach Program to host a series of regional workshops. The Sea Grant Oil Spill team, based in the Gulf, partnered with state Sea Grant programs across the country to plan and deliver regional workshops in 2018-2019. The goals of the workshops were to raise awareness of …

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A Preliminary Investigation Of Quality Metrics And Performance For Selected Institutions Delivering Technology Mediated Higher Education, Suhong Li, Kamel Rouibah, Hal Records, Robert Behling Jan 2019

A Preliminary Investigation Of Quality Metrics And Performance For Selected Institutions Delivering Technology Mediated Higher Education, Suhong Li, Kamel Rouibah, Hal Records, Robert Behling

Information Systems and Analytics Department Faculty Journal Articles

The 21st century has brought about significant change to both business organizations and educational institutions. One of the more important changes in delivering higher education is the development and growth of technology mediated higher education (online programs), delivered by both non-profit and for-profit college and university programs. These programs provide students with expanded opportunities to further their education and have enrolled hundreds of thousands of students in courses of study. This study assesses business school programs offering technology mediated higher education using five quality metrics: 1) external review and accreditation; 2) affordability; 3) admissions and graduation; 4) online students reviews …

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Optical Characterization Of Salt-Induced Swelling Behavior Of Poly($N$-Isopropylacrylamide) Terpolymer Hydrogel Layers, İlke Anaç, Anil Bozdoğan Jan 2019

Optical Characterization Of Salt-Induced Swelling Behavior Of Poly($N$-Isopropylacrylamide) Terpolymer Hydrogel Layers, İlke Anaç, Anil Bozdoğan

Turkish Journal of Chemistry

This study reports for the first time the effect of different sodium halide salts (NaClO$_{4}$, NaI, and Na$_{2}$CO$_{3})$ in the low concentration range (in the range of 10$^{-7}$-1 M) on the swelling behavior of photo-crosslinked, surface-immobilized poly($N$-isopropyl acrylamide) (PNIPAAm) terpolymer layers. PNIPAAm terpolymer (consisting of $N$-isopropylacrylamide, methacrylic acid, and 4-methacryloxybenzophenone) was synthesized via free radical polymerization. The PNIPAAm terpolymer layers were prepared on gold substrates via spin coating and crosslinked and surface attached via UV radiation. The swelling behavior of the layers in monovalent (NaClO$_{4}$ and NaI) and divalent (Na$_{2}$CO$_{3})$ solutions was monitored by surface plasmon/optical waveguide spectroscopy. The terpolymer …

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Anticancer And Antiangiogenesis Activities Of Novel Synthesized 2-Substituted Benzimidazoles Molecules, Adem Güner, Eli̇fsu Polatli, Tamer Akkan, Hakan Bektaş, Canan Albay Jan 2019

Anticancer And Antiangiogenesis Activities Of Novel Synthesized 2-Substituted Benzimidazoles Molecules, Adem Güner, Eli̇fsu Polatli, Tamer Akkan, Hakan Bektaş, Canan Albay

Turkish Journal of Chemistry

In this study, novel 2-substituted benzimidazoles molecules having triazole, thiadiazole, and oxadiazole rings were synthesized and were evaluated by anticancer, antioxidant/oxidant status, genotoxicity, and antiangiogenesis assays. Anticancer activity of the compounds was determined by MTT (0.5, 5, and 50 $\mu $g/mL) and lactate dehydrogenase (LDH) release assays against human prostate and breast cancer cells. Oxidative status of cells was elicited by total oxidative stress and total antioxidant capacity methods. Chick chorioallantoic membrane assay was used to evaluate the antiangiogenic activity. Genotoxicity was evaluated by the sister chromatid exchange (SCE) and micronucleus (MN) tests in lymphocyte cultured human blood. Our results …

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Preparing School Counselors In Training To Implement English As A Second Language (Esl) Strategies During Classroom Lessons, Leonissa Johnson, Amy Cain Jan 2019

Preparing School Counselors In Training To Implement English As A Second Language (Esl) Strategies During Classroom Lessons, Leonissa Johnson, Amy Cain

International Journal for the Scholarship of Teaching & Learning

School counselors provide academic, social-emotional, and college and career access information to all students via core curriculum classroom lessons. English Learners benefit from differentiated classroom instruction that makes content engaging and accessible. Despite this need for differentiated instruction, few educators have received English as a Second Language (ESL) teaching strategies training. This mixed methods study examined how an ESL teaching strategies workshop influenced the utilization of these approaches by school counselors in training. A triangulation mixed methods design was used to collect complementary data about participant behavior and thinking. Modeling ESL strategies alone did not yield statistically significant differences in …

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Teaching Hidden History: A Case Study Of Dialogic Scaffolding In A Hybrid Graduate Course, Amy K. Swan, Nathan M. Sleeter, Kelly Schrum Jan 2019

Teaching Hidden History: A Case Study Of Dialogic Scaffolding In A Hybrid Graduate Course, Amy K. Swan, Nathan M. Sleeter, Kelly Schrum

International Journal for the Scholarship of Teaching & Learning

Using an expanded version of Alexander’s (2008) theory of dialogic teaching developed by Rojas-Drummond, Torreblanca, Pedraza, Vélez, and Guzmán (2013), this case study explored how instructors and students in a hybrid graduate course engaged in the process of dialogic teaching and learning (DTL). In particular, we examined the ways in which scaffolding strategies used in the course supported inquiry-based learning. Our findings suggest that instructors and students engaged in all five dimensions of DTL as defined by Rojas-Drummond et al. (2013), and illuminate the ways in which scaffolding can facilitate inquiry-based learning in interdisciplinary instructional settings.

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Georgia Journal Of College Student Affairs, Georgia College Personnel Association (Gcpa) Jan 2019

Georgia Journal Of College Student Affairs, Georgia College Personnel Association (Gcpa)

Journal of Higher Education & Student Affairs

Complete issue for volume 35, number 1 (Fall 2019).

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Stworzyć Lidera. Od Wizerunku Beniaminka Do Rozgrywającego W Biznesie, Julita Majczyk Jan 2019

Stworzyć Lidera. Od Wizerunku Beniaminka Do Rozgrywającego W Biznesie, Julita Majczyk

Monografie/Monographs

Historia cywilizacji jest w dużej mierze opowieścią o wielkich liderach przeszłości, którzy potrafili – często na przekór istotnym przeszkodom – zdobyć poparcie ludzi i zrealizować swoje zamiary. Nic zatem dziwnego, że również w badaniach biznesu studia poświęcone liderom zajmują poczesne miejsce. Istnieje szereg idei, teorii, pojęć dotyczących tego, kogo określa się liderem, w jaki sposób można nim zostać, jakie cechy, zachowania pretendują, by do grona przywódców dołączyć. Jednak w jaki sposób media kreują wizerunek lidera? W niniejszej książce podjęto próbę zrekonstruowania sposobów charakteryzowania osób postrzeganych jako liderów w świecie biznesu. Zastosowana w badaniach metoda teorii ugruntowanej, która skupia się na …

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Isolation And Activation Of B Lymphocytes Using Magnetic Microbeads-Assisted Reversible Bioconjugation, Veena Vinod Jan 2019

Isolation And Activation Of B Lymphocytes Using Magnetic Microbeads-Assisted Reversible Bioconjugation, Veena Vinod

Theses

B cells mature within the microenvironment called germinal center and undergo affinity maturation through rounds of selective clonal expansion and somatic hypermutation, isotype class switching, and differentiation to plasma cells and memory B cells. Induction of such complex germinal center reactions artificially in vitro has not been achieved. Here we first develop and evaluate the use of reversible bioconjugation chemistry for surface modification of magnetic microbeads with model proteins using desthiobiotin-streptavidin pair. Second, we employed the same reversible bioconjugation chemistry and magnetic sorting for isolation of antigen-specific B cells with a minimal amount of potentially toxic magnetic beads for the …

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Effect Of Scytovirin And Testosterone On Cryptococcus Neoformans, Marjan Berenji Jalaei Jan 2019

Effect Of Scytovirin And Testosterone On Cryptococcus Neoformans, Marjan Berenji Jalaei

Theses

Pathogenic fungi have become increasingly important due to a wide range of fungal infections worldwide and emergence of drug resistant strains. Cryptococcus neoformans is an opportunistic fungal pathogen that causes mostly pulmonary infections, meningitis and meningoencephalitis. The rate of mortality in males is higher compared to females. Testosterone, the major steroid hormone in males, has been shown to affect the C. neoformans pathogenicity. Searching for an effective antifungal drug against C. neoformans, in particular for males, is a matter of importance. Scytovirin is a lectin with newly discovered antifungal activity associated with cell wall interaction. Scytovirin was tested against two …

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A Comparative Analysis Of Trna[Superscript Ala] Production, Brandie Byler Jan 2019

A Comparative Analysis Of Trna[Superscript Ala] Production, Brandie Byler

Theses

With more and more antibiotic-resistant infections occurring worldwide each year, it is imperative that a new class of antibiotics be developed in order for modern medical treatments to continue to advance. To do so effectively, new antibacterial targets must be found and analyzed for their potential as novel antibiotic drugs. Peptidyl-tRNA hydrolase I (Pth1) is potentially one such target. During protein translation, approximately 10% of the time the ribosome stalls. When this happens, and rescue mechanisms fail, the ribosome is disassembled. This leaves the nascent peptide attached to the P-site tRNA, creating peptidyl-tRNA. If peptidyl-tRNA is not recycled, the cell …

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Structural Engineering Of The Antifungal High Mannose Binding Lectin Myxovirin, Jessica L. Osier Jan 2019

Structural Engineering Of The Antifungal High Mannose Binding Lectin Myxovirin, Jessica L. Osier

Theses

The pathogenic encapsulated yeast Cryptococcus neoformans causes a majority of fungal disease related deaths worldwide from pulmonary infections, meningitis, or meningoencephalitis. Loss of efficacy in current treatment options against C. neoformans and the emergence of antifungal drug resistance call for the development of new therapeutics. High mannose binding lectins such as Scytovirin have been shown to be promising anticryptococcal drug candidates. In this work, a homologous antifungal lectin, Myxovirin, was structurally engineered in an effort to improve both its carbohydrate binding affinity and its anticryptococcal activity. Carbohydrate binding was studied using both isothermal titration calorimetry (ITC) and nuclear magnetic resonance …

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Love And Hip Hop : An Examination Of Hip-Hop Media Effects On African American Romantic Relationships, Latoya D. Binford Jan 2019

Love And Hip Hop : An Examination Of Hip-Hop Media Effects On African American Romantic Relationships, Latoya D. Binford

Theses

Hip-hop has grown immensely since its invention in the 1970s. No longer just a musical genre, its influences can be seen in all facets of culture, especially within the African American community in which it was created. Because so much of the commercially successful hip-hop media is shrouded in themes such as violence, abuse, and misogyny, it is important to examine its effects on its consumer. This study examined the effects of hip-hop consumption on romantic relationships, as perceived by African American/black women. Through thematic analysis and the theoretical framework of Mere Exposure effect, findings revealed that the participants correlated …

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Prevention Of Violence Against Children: A Systems Readiness Assessment In Côte D’Ivoire, Marie-Kaye Soletchi Seya-Sery Jan 2019

Prevention Of Violence Against Children: A Systems Readiness Assessment In Côte D’Ivoire, Marie-Kaye Soletchi Seya-Sery

College of Graduate Studies: Theses & Dissertations

Violence against children (VAC) is a global problem with significant consequences. Recognizing the need to better understand the problem of VAC in Côte d’Ivoire (CI), the government of CI recently completed a survey on violence against children. The recent data will support an evidence-based national action plan for the prevention of VAC. Research shows that initiatives tackling specific problems will only be as successful as the community’s readiness to take action. This study applied the community readiness model to assess the readiness of the multisectoral task force (MSTF) to implement the national action plan in CI. Eight MSTF participants’ interview …

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