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A General Synthesis Of Tris-Indole Derivatives As Potential Iron Chelators, R. Bryan Sears, Russell A. Carpenter, Christine R. Whitlock

Chemistry: Faculty Publications (1990-2023)

The development of a novel route for the synthesis of a new class of compounds is described. The first tripodal, tris-indole amines are prepared by straightforward routes.

Southern Educator, Georgia Southern University

College of Education: News & Publications (2003-2023)

• Homecoming Lecture
• COE Faculty Awards Presented
• Georgia Southern Visits China
• Education Career Corner
• COE Soaring Into Action
• Welcome New Faculty/Staff
• Spotlight on Alumni
• Southern Educator Class Roll
• Georgia Center for Educational Renewal First Year Report–Winning Grants and Awards, Reviewing Research, and Developing Instructional Materials
• Partnering for Portal
• 2005-2006 COE Faculty and Staff

Southern Educator, Georgia Southern University

College of Education: News & Publications (2003-2023)

• 2006 for 2006 Raising Funds for College of Education Scholarships
• PSC Awards Presented to Georgia Southern
• Are You a 2003-2004 or 2004-2005 Graduate?
• Students Receive Scholarships
• COE Soaring Into Action
• “We the People” Summer Institute
• Comprehension and Caring: Mayte de Jesus and the Veracruz Teacher Project
• Professors Who Have Made A Difference
• The Future is Looking Bright
• PRISM—Partnership for Reform in Science and Mathematics—is off to a New Start
• Cross-Cultural Teaching Consortium
• Barrow County Student Teaching and Living Experience
• On Loving and Leaving
• SPOTLIGHT ON ALUMNI
• Southern Educator Class Roll
• The Transition Program at Harlem High School

Undergraduate And Graduate Catalog [2004-2005], Georgia Southern University

Undergraduate & Graduate Catalogs

No abstract provided.

Testing Whiteness: No Child Or No School Left Behind?, Helen A. Moore

Department of Sociology: Faculty Publications

I began my study of schooling and critical pedagogy as a research assistant for a program called PRIME: Program Research in Multicultural Education. One of our challenges in the mid-1970s was to assist the Principal Investigator, Dr. Jane Mercer, in constructing educational materials for her role as an expert witness in Larry P. v. Riles. Through that project, I learned a great deal about testing issues as they relate to the whiteness of educational, political, legal and policy perspectives. Today, as a sociologist, I commit my research to an understanding of the processes and consequences of testing policy and the …

Family Economic Pressure And Adolescent Suicidal Ideation: Application Of The Family Stress Model, Kevin A. Yoder, Dan R. Hoyt

Department of Sociology: Faculty Publications

This study used a sample of 501 families from the Mississippi Delta region to examine the feasibility of the Family Stress Model for understanding adolescent suicidal ideation. The results indicated that family economic pressure was related to parental depressive symptoms, which, in turn, was related to parental hostile behavior and physical abuse. These parental behaviors were related to adolescent self-esteem and depressive symptoms, which, in turn, were related to adolescent suicidal ideation. Therefore, family economic pressure and parental depressive symptoms and behaviors were indirectly related to adolescent suicidal ideation. The results indicate the applicability of the Family Stress Model for …

Voltammetric, Uv Absorption And Viscometric Studies Of The Interaction Of Norepinephrine With Dna, Mehmet Aslanoğlu, Necla Öge

Turkish Journal of Chemistry

Voltammetric, UV-vis spectroscopic and viscometric methods were used to investigate the interaction between norepinephrine and DNA. The results of square wave voltammetric and UV-absorption measurements have shown that norepinephrine was bound to DNA. Besides the electrostatic interaction between DNA and norepinephrine, hydrogen bonds and intercalation may also exist. Viscosity measurements also suggest that NE is bound to DNA via an electrostatic mode of interaction at lower norepinephrine concentrations. However, at higher concentrations of norpinephrine, the increase in the relative viscosity of DNA indicated that the intercalation is also involved in the binding. The binding constant and the binding site size …

Organotin(Iv) Derivatives Of N-Maleoylamino Acids: Their Synthesis And Structural Elucidation, Moazzam H. Bhatti, Saqib Ali, Farhat Huma, Saira Shahzadi

Turkish Journal of Chemistry

Organotin carboxylates of general formula R_3SnL (1), (2), (4) and (6), R_2SnL_2 (5) and {[(R_2SnL)_2O]_2} (3), where L = N-maleoylglycinate, N-maleoyl-\beta-alaninate and N-maleoylmethioninate, were prepared. The synthesis of these compounds was achieved by either reaction of organotin halides, R_3SnCl, with triethylammonium salt of N-maleoylamino acids or/and organotin oxides, (R_3Sn)_2O and R_2SnO, with maleamic acid in the presence of triethyl amine. These compounds were characterized by FT-IR, multinuclear NMR (^1H, ^{13}C and ^{119}Sn), mass and ^{119m}Sn Mössbauer spectroscopy. The geometry around the tin atom is compared both in solution and in solid state. Different literature methods were employed to calculate the …

Development Of Gold Porous Plate Electrode And Examination Of Its Performance For Iodine Determination, Ülkü Anik Kirgöz, Hüseyi̇n Tural

Turkish Journal of Chemistry

A novel procedure for the construction of a home-made gold porous plate electrode is described. A plate of silver and gold alloy was treated with nitric acid or alternatively by anodic oxidation to remove the silver component, leaving a porous surface having active sites for adsorption. The performance of the electrode developed was tested using iodine solution as analyte material. The parameters related to the working conditions were optimized before the examination of analytical characteristics. Under the optimal conditions, the voltammetric results show that the gold porous plate electrode offers the detection limit of 2.18 x 10^{-5} M and reproducibility …

Analysis Of The Essential Oil Composition Of Sideritis Albiflora Using Direct Thermal Desorption And Headspace Gc-Ms Techniques, Gülaçti Topçu, Asli Barla, Ahmet C. Gören, Gökhan Bi̇lsel, Mi̇ne Bi̇lsel, Gülendam Tümen

Turkish Journal of Chemistry

The main constituents of Sideritis albiflora were found to be trans-caryophyllene, \alpha-pinene, \beta-pinene, \gamma-cadinene, pulegone, and caryophyllene oxide by both thermal desorption GC/MS and headspace GC/MS techniques.

Excellent And Convenient Procedures For Reduction Of Benzene And Its Derivatives, Ali̇ye Altundaş, Abdullah Menzek, Demet Demi̇rci̇ Gülteki̇n, Melek Karakaya

Turkish Journal of Chemistry

Reductions of benzene, toluene, ortho-xylene, cumene, anisole and benzoic acid to corresponding nonconjugated dienes were realized at room temperature by gas NH_3 and Li. The reduced products were easily isolated because THF and dioxane were dissolved in the water. The yields and conversions of the reactions were 70-89% and 80-100%, respectively.

The Electroanalytical Determination Of Sodium Borohydride Using A Gold Electrode, Hüseyi̇n Çeli̇kkan, Hasan Aydin, M. Levent Aksu

Turkish Journal of Chemistry

It was shown that square wave voltammetry, a technique with a much lower detection limit, could be successfully used in the detection of borohydride formed in alkaline medium. A Au electrode was found to be very suitable for this purpose. The detection limit was 3 x 10^{-5} M.

A New Approach To The Ring Opening Reactions Of 2,7,7-Trimethyl-3,3-Dibromotricyclo[4.1.1.0^{2,4}]Octane, Zeki̇ Şenol, Ömer Zai̇m, Meti̇n Balci

Turkish Journal of Chemistry

The reaction of \alpha-pinene and dibromocarbene produced a fairly unstable product, 2,7,7-trimethyl-3,3-dibromotricyclo[4.1.1.0^{2,4}]octane, from which 3-bromo-7,7-dimethyl-2-methylenebicyclo[4,1,1]oct-3-ene and 3-bromo-2,7,7-trimethylbicyclo [4,1,1]octa-2,4-diene were obtained in chloroform at room temperature and in various other media and conditions. Two new compounds, 3-bromo-2,7,7-trimethylbicyclo [4.1.1]oct-3-en-2-ol and 2-(4-bromo-5-methylcyclohepta-3,5-dien-1-yl) propan-2-ol, were observed in aqueous acetone in addition to the previous two. The stability and formation mechanism of the formed products are discussed

An Unusual Pentacyclic Dinitrogenous Alkaloid From Galanthus Gracilis, Nehi̇r Ünver, Gülen İrem Kaya

Turkish Journal of Chemistry

A minor alkaloid, namely gracilamine, was isolated from Galanthus gracilis. This was the first example of a pentacyclic dinitrogenous alkaloid isolated from a member of Amaryllidaceae. The structure of this alkaloid was elucidated by means of comprehensive spectroscopic methods (1D and 2D NMR, MS, UV, IR).

Polyphenolic Compounds And Antimicrobial Activity Of Quercus Aucheri Leaves, Mahmut Koray Sakar, Di̇dem Şöhretoğlu, Meral Özalp, Meli̇ke Eki̇zoğlu, Sonia Piacente, Cosimo Pizza

Turkish Journal of Chemistry

Chromatographic studies (CC, VLC, MPLC, and PTLC) on ethyl acetate extract from the leaves of Quercus aucheri yielded 2 flavonoids (quercetin 3-O-\alpha-L-arabinopyranoside (1), quercetin 3-O-\beta-D-galactopyranoside (2)) and 2 tannin precursors and a procyanidin [(isolated as peracetates of (+)-catechin (3a), (+)-gallocatechin (4a) and epicatechin-(4\beta \to 8)-catechin (5a))]. The structures of the compounds were elucidated by UV, 1D-NMR (^1H, ^{13}C, TOCSY) and 2D-NMR (COSY, HSQC, HMBC) techniques. Different extracts (80% MeOH, EtOAc, n-BuOH and H_2O) from the leaves of Q. aucheri were investigated for their antimicrobial activity against 2 Gram-positive and 2 Gram-negative bacteria and 3 yeast-like fungi by a broth microdilution …

The Crystal And Molecular Structure Of New Hydrogen Dinitrate Of Nitrato(2,2',2''-Terpyridyl)Platinum(Ii) Ion, [Pt(Terpy)Ono_2][H(Ono_2)_2], Abdurrahman Şengül

Turkish Journal of Chemistry

The title compound, C_{15}H_{12}N_6O_9Pt, consists of [Pt(terpy)ONO_2]^+ cation and [H(ONO_2)_2]^- anion, in which 2 nitrate groups are linked by a strong hydrogen bond [O \cdots O 2449(1) Å]. In the cation, the terpyridine is coordinated to Pt as a tridentate ligand and the fourth position is occupied by the nitrate ion's oxygen. The coordination around Pt is square-planar. The coordinated nitrate moiety adopts a distorted trigonal-planar configuration. It belongs to the space group P \bar{1} with a = 8.605(2), b = 10.220(3) Å, c = 10.517(2) Å and \alpha = 89.51(1), \beta = 82.78(2), \gamma = 76.90(2)°.

Cover And Contents

Turkish Journal of Chemistry

No abstract provided.

Catalytic Oxidation Properties And Characterization Of Lasrco_{0.9}B'_{0.1}O_4 (B'= Mn, Fe, Ni, Cu) Mixed Oxides, Laitao Luo, Guangxin Shao, Zhanhui Duan

Turkish Journal of Chemistry

Using a polyacrylamide gel method, a series of LaSrCo_{0.9}B'_{0.1}O_4 (B'= Mn, Fe, Ni, Cu) mixed oxides were prepared and their catalytic activity was studied with CO and C_3H_8 oxidations as a testing reaction. The results show that the specific effects of B' ions on CO and C_3H_8 oxidations depend on their category. In comparison to LaSrCoO_4 catalyst, the activity of LaSrCo_{0.9}Ni_{0.1}O_4 catalyst for CO and C_3H_8 oxidations is higher, while only lower activity is obtained for Mn, Fe or Cu-doped catalysts. The information derived from TPD, XRD and iodometry experiments shows that the increase in oxidation activity of LaSrCo_{0.9}Ni_{0.1}O_4 catalyst …

Spectroscopic And Luminescence Properties Of An Isonicotinic Acid, Nurdoğan Can, Ahmet Ataç, Fehmi̇ Bardak, Şebnem Esen Sözerli̇ Can

Turkish Journal of Chemistry

An isonicotinic acid N-oxide Zn(II) compound was characterized on the basis of elemental analysis. FTIR spectra of the compound and free isonicotinic acid N-oxide (INO) were recorded in the range 4000--400 cm^{-1}. Cathodoluminescence (CL) spectra from the Zn(INO)_2 complex were recorded. The luminescence data were interpreted in terms of the emission band at 470 nm. The green luminescence (\sim 470 nm) arises from Zn^{2+} transition ^4T_1 (^4G) \to ^6A_1 (^6S). It shows a weak vibronic structure, and short lifetimes less than 150 \mu s. The lifetime and intensity of the signal are temperature dependent, and the parameters are reported for …

Investigation Of Electron Transfer Reaction Between Diphenylbenzidine And Ascorbic Acid, Iftikhar Imam Naqvi, Abida Perveen

Turkish Journal of Chemistry

The kinetics of the reduction of diphenylbenzidine by ascorbic acid were investigated in the pH range 3.5 to 5.0. Diphenylbenzidine was prepared by the oxidation of diphenylamine with cerium(IV) sulfate tetra hydrate. The order of the reaction with respect to each of the reactants, i.e ascorbic acid (ASC), diphenylbenzidine (DPB) and H^+ ,was found to be first. The following rate law is recommended: Rate = {k_1 [C_{12}H_{10}N_2C_{12}H_{10}] + k_2K [C_{12}H_{10}N_2C_{12}H_{10}][H^+]}[C_6H_8O_6] where k_1 and k_2 have the values of 2.0 \times 10^4 dm^3mol^{-1} s^{-1} and 6.58 \times 10^3 dm^3.mol^{-1}.s^{-1} , respectively. K is the protonation constant of DPB, having a value …

A New Approach Towards (\Pm)-4-Ipomeanol And Its 2-Furyl Regioisomer, Jurgen Krauss, Franz Bracher, Doris Unterreitmeier

Turkish Journal of Chemistry

The cytotoxic furan derivative (\pm)-4-ipomeanol (1) and its regioisomer (8) were prepared in a new and efficient way starting from commercially available furan derivatives. In both cases the key step was a regioselective solvolysis of the terminal double bond with trifluoroacetic anhydride and boron trifluoride. The resulting compounds were tested in an agar diffusion assay against several bacteria and fungi, but did not show significant activity.

Synthesis, Characterization And Genotoxicity Of Platinum(Ii)Complexes With Subtituted Benzimidazole Ligands, Özteki̇n Algül, Berri̇n Özçeli̇k, Ufuk Abbasoğlu, Fatma Gümüş

Turkish Journal of Chemistry

Five Pt(II) complexes with the ligands 2-ethyl-/ or-benzyl-/ or-phenoxymethyl- and 1-methyl-2-hydroxymethyl- and 1-methyl-2-phenyl- benzimidazoles were synthesized and characterized by elemental analysis, and IR and ^1H-NMR spectra and evaluated for their in vitro genotoxic activities by Rec-Assay test. Based on the data obtained in this study, the Pt(II) complexes tested might be taken into consideration as promising antitumor compounds.

Heterogeneous Electron Transfer Rate Constants Of Viologen At A Platinum Disk Electrode, Naheed Kaukab Bhatti, M. Sadiq Subhani, Ather Yaseen Khan, Rumana Qureshi, Abdur Rahman

Turkish Journal of Chemistry

The transfer of electrons to the dications of viologens including methyl viologen, diquat, benzyl viologen and n-butyl viologen was studied at the surface of a platinum disk electrode. The rate constants for the processes were determined and the effects of solvent, temperature and working electrode studied. The studies showed that the rate constants increase with temperature and the effect of solvent on the heterogeneous electron transfer rate constant is related to the polarity, dielectric constant and viscosity of the solvent and on the electrode material. Theoretical rate constants were calculated by considering the effects of barrier crossing probability and nuclear-frequency …

Extraction-Spectrophotometric Determination Of Trace Amounts Of Barium And Strontium By 18-Crown-6 And Rose Bengal Using Partial Least Squares, Jahan B. Ghasemi, Alireza Nikrahi, Ali Niazi

Turkish Journal of Chemistry

Partial least squares modeling is a powerful multivariate statistical tool applied to extraction-spectrophotometric simultaneous determination of mixtures of barium and strontium. The method is based on the formation of the ternary complexes with 18C6 and rose bengal with barium and strontium. The 18C6-Ba-RB and 18C6-Sr-RB ternary complexes are quantitatively extracted into dichloromethane and the resolution of the mixtures is accomplished by partial least squares (PLS). In this study, the calibration model is based on absorption spectra in the 500-600 nm range for 25 different mixtures of barium and strontium. Calibration matrice's ranges were 0.05-5.50 and 0.03-4.50 \mu g mL^{-1} and …

Reactions Of Alkenes With Sodium Perborate And Sodium Chloride, Erdal Şenocak, Yavuz Taşkesengi̇l, Ferhan Tümer, Cavi̇t Kazaz

Turkish Journal of Chemistry

Sodium perborate oxidatively chlorinates a variety of alkenes with sodium chloride to form the corresponding chloro derivatives under mild conditions.

Construction And Characterization Of Indium Liquid Ion Selective Electrodes Based On Crown Ethers In A Pvc Matrix Membrane, Najwa I. Abdulla, Abdul-Muhsin Al-Haideri, Moen I. Al-Joboury, Nabil S. Nassory

Turkish Journal of Chemistry

Several indium ion selective electrodes were constructed based on 15-crown-5 (15C5), dicyclohexano-18-crown-6 (DCH18C6) and dibenzo-24-crown-8 (DB24C8) as sensors and di-octyl phenyl phosphonate (DOPP), di-butyl phthalate (DBPH), tri-butyl phosphate (DBP), tri-n-amyl phosphate (TAP) and bis (2-ethyl hexyl) phosphate (BEHP) as plasticizers in a PVC matrix membrane. Electrode parameters, pH effect and interferences were also studied. The indium electrode based on 15C5 using DOPP as a plasticizer gave the best response for low levels of In^{3+} ions. The linear range for this electrode ranged from 3.8 x 10^{-5} to 5.0 x 10^{-2} M (with correlation coefficient r = 0.9997), the slope was …

Characterization Of Tio_2 Synthesized In Alcohol By A Sol-Gel Process: The Effects Of Annealing Temperature And Acid Catalyst, Funda Sayilkan, Meltem Asi̇ltürk, Hi̇kmet Sayilkan, Yunus Önal, Murat Akarsu, Ertuğrul Arpaç

Turkish Journal of Chemistry

The effects of annealing temperature and hydrolysis catalyst on the crystalline form and crystallite size of TiO_2 prepared by a sol-gel process were investigated. Three types of TiO_2 were synthesized by hydrolysis of titanium(IV)-iso-propoxide with water in n-propanol without catalyst (Type-A) and with HCl as catalyst, where the H^+ /Ti^{4+} mol ratio was 0.54 for Type-B and 0.2 for Type-C. Hydrolysis products were thermally treated at 100, 200, 300, 400 and 500 °C for 1 h after drying at room temperature. Characterization of the particles was carried out using XRD, BET, TG/DTA and SEM analysis. The pore size distributions were …

A Study Of The Applicability Of The Theory Of Inventive Problem Solving On Technology Management Of An E -Business Call Center, Aaron C. Goldsmith

All-Inclusive List of Electronic Theses and Dissertations

The Theory of Inventive Problem Solving (TRIZ) is being used to solve technology and engineering problems. The goal of theDissertation was to conduct a study to determine the applicability of the Theory of Inventive Problem Solving (TRIZ) on the technology management for an e-business call center. The variables selected for the research were the Average Calls per 10,000 Subscribers (ACPS) and the Unburdened Billable Hours (UBH). The applicability was determined through the research hypotheses and research questions constructed for the study. The research null hypotheses were tested using a time-series quasi-experiment to determine if four TRIZ-based solutions introduced into the …

Adopter Characteristics And Teaching Styles Of Faculty Adopters And Nonadopters Of A Course Management System, Cheryl A. Dugas

All-Inclusive List of Electronic Theses and Dissertations

This study examines the effects of innovativeness and teaching style on the decision by higherEducation faculty to adopt or not adopt a newEducational technology. The study attempts to determine a relationship between adoption or nonadoption of a course management system and either degree of innovativeness or teaching style. The study was influenced by Everett Rogers's Diffusion of Innovation theory and Anthony Grasha's Teaching Styles research. The research was undertaken on the campus of a small, private engineering institution in Indiana in the spring of 2005. A purposive sample of 30 faculty adopters and 31 faculty nonadopters of a course management …

Cognitive, Personality, And Demographic Attributes Of Student Change, Jeanne Marie Henry

All-Inclusive List of Electronic Theses and Dissertations

This study was an examination as to whether cognitive, personality, and demographic attributes of students have changed over time. Archival data for 10 cohorts of freshman students from a private Midwest engineering institution were used. Data consisted of Myers-Briggs Type Indicator (MBTI) results, Learning Environment Preferences (LEP) results, and demographics. ANOVAs were performed for all interval data and Chi-Square analyses for all nominal data. Statistical significance was found for MBTI Thinking-Perceiving and Sensing-Intuition scales, LEP Cognitive Complexity Index scores, and demographic variables including age, parentalEducation level, and SAT scores. Results are discussed in terms of practical significance, trends evidenced in …