Digital Commons Network^™

Preconcentration Of Trace Elements On Amberlite Xad-4 Resin Functionalised With 1,2-Bis (O-Aminophenylthio) Ethane And Their Determination By Faas In Environmental Samples, Ömer Dalman, Volkan Numan Bulut, İsmai̇l Deği̇rmenci̇oğlu, Mehmet Tüfekçi̇

Turkish Journal of Chemistry

The use of chemically modified XAD-4-1,2-bis (o-aminophenylthio) ethane chelating resin for preconcentrating Cr^{6+}, Mn^{2+}, Fe^{3+}, Co^{2+}, Cu^{2+}, Cd^{2+}, Zn^{2+}, Pb^{2+}, and Ni^{2+} was studied using flame atomic absorption spectrometry (FAAS) for metal monitoring in environmental samples. Cd^{2+}, Zn^{2+}, Pb^{2+}, and Ni^{2+} ions were quantitatively recovered at the rate of 96.0%, 101.0%, 101.0%, and 95.0%, respectively (RSD < 5%), from the studied solutions. The procedure is based on the retention of analytes on a short column of 1,2-bis (o-aminophenylthio) ethane-XAD-4 chelating resin from a buffered sample solution and subsequent elution with 1 M HNO_3. Various parameters, such as pH, eluent type, and concentration, flow rate of sample solution and matrix interference effect on the retention of the metal ions have been studied. The optimum pH for the sorption of the above-mentioned metal ions was about 6. The adsorption and batch capacity of adsorbent and loading half time (t_{1/2}) for Ni^{2+}, Zn^{2+}, Cd^{2+}, and Pb^{2+} were established. The limit of detection was 3.0 \mu g L^{-1} for Pb^{2+} and Ni^{2+}, 0.6 \mu g L^{-1} for Cd^{2+}, and 0.3 \mu g L^{-1} for Zn^{2+}. The validation of the procedure was carried out by analysis of certified reference materials and standard addition. The proposed enrichment method was applied to environmental samples from Trabzon.

Synthesis Of Piperazine Based Polyimide In The Presence Of Ionic Liquids, Bülent Alici, Süleyman Köytepe, Turgay Seçki̇n

Turkish Journal of Chemistry

Ionic liquids derived from imidazolium, pyridinium, and alkylammonium salts were investigated not only as catalysts but also as solvents in polymerization of 1,4-bis(3-aminopropyl) piperazine. Results were compared with the conventional polymerizations in N-methylpyrrolidone (NMP). The catalyst has not only a detectable influence on polymer solubility, but also the degrees of polymerization are notably higher. They are even greater than the values obtained by conventional 2-stage polymerization in organic liquids. Ionic liquids based on imidazolium salts seem preferable over pyridinium and alkylammonium salts due to the higher degree of polydispersity of the polyimides obtained. The glass transition temperatures and thermal stabilities …

Synthesis And Characterization Of Nife_2o_4 Nano-Octahedrons By Edta-Assisted Hydrothermal Method, Nermi̇n Kasapoğlu, Abdulhadi̇ Baykal, Muhammet S. Toprak, Yüksel Köseoğlu, Harun Bayrakdar

Turkish Journal of Chemistry

Octahedral-like NiFe_2O_4 ferrite nanocrystals were synthesized using EDTA-assisted hydrothermal method under mild conditions. XRD and FTIR analysis were used for composition and structure investigation. XRD analysis revealed a pure ferrite phase with high crystallinity. Morphological investigation by SEM showed octahedral nanocrystals with an average particle size of \sim 40 nm. Crystallite size calculated from XRD peak broadening resulted in an average crystallite size of 39 nm, matching well with the SEM observations. TEM analysis and corresponding electron diffraction confirmed the octahedral morphology and single crystallinity of octahedral nanoparticles. Magnetic measurements showed that NiFe_2O_4 octahedrons have smaller coercivity than bulk ferrite …

Athletic Classrooms: Attitudes Of Participants Toward The Developmental Value Of Athletics And The Evolution Of Interscholastic Sport In High Schools, Michael Lynn Blackburn

All-Inclusive List of Electronic Theses and Dissertations

The purpose of this study was to determine the manner in which interscholastic athletics became a part of the extra-curricular offering of the schools and the political and social forces that impacted the implementation, as well as to provide the perceptions of athletic participants regarding theirEducational experience, personal character development and community impact. The research questions that guided this study where: (1) Would the development of interscholastic athletics in high schools display the fostering of beneficial lifelong attributes among participants, contribute positively to theEducational process and have a favorable impact on communities? (2) Would athletic participation help develop strong moral, …

The Characteristics Of Sino-Taiwanese Joint Ventures In The People's Republic Of China, Chen-Yu James Liu

Plymouth Business School Theses

The main objective of this thesis is to shed light on the characteristics and performance of Sino-Taiwanese joint ventures (JVs) in the People's Republic of China and in particular to investigate the role played by guanxi (interpersonal relationships) in their formation and in the way they function. The research shows that guanxi enhances the effectiveness of Taiwanese joint venture partners by overcoming unanticipated external environmental factors and enabling them to deal with the complex internal managerial issues associated with the Chinese market. The different political and economic relations between Taiwan and China make the joint venture entry strategy attractive to …

The Adoption Of Internet Technologies By Independent Hotels In The Uk, Wai Mun Lim

Plymouth Business School Theses

The growth of the technology and its range of possible uses have made it a necessity for independent hoteliers to examine their use of the internet, specifically its effectiveness for marketing and distribution purposes. It is widely recognised that the independent hotel sector makes up the bulk of the hotel industry in the UK and often do not have the resources or desire to keep up with new technologies. This study scrutinizes, evaluates and establishes the factors that influence the decision to adopt a range of internet technologies for marketing and distribution within the UK Independent hotel sector. The conceptual …

An Economic Analysis Of Costs Associated With Development Of A Cell Salvage Program, J.R. Waters, Heidi H. Meier, J.H. Waters

Business Faculty Publications

BACKGROUND: The increasing cost of blood products and associated risks of transfusion have lead to a heightened interest in techniques which reduce or replace allogeneic blood transfusion. The use of cell salvage is being explored in a number of institutions. We present financial information which may be useful to institutions that are considering the addition of a cell salvage service. METHODS: A review of the cell salvage data from 2328 patients was used to estimate the average cost of a packed red blood cell unit equivalent processed by cell salvage equipment. In addition, an analysis was performed to assess the …

Direct Formation Of H_2o_2 From H_2 And O_2, Meltem Yildiz, Ayşe Ni̇lgün Akin

Turkish Journal of Chemistry

The direct combination of hydrogen and oxygen to form hydrogen peroxide in liquid media with prepared catalysts was carried out in a slurry reactor at atmospheric pressure and room temperature. An O_2/H_2 ratio of 2:1 with a 50 mL/min flow rate was used in these experiments. Catalyst activity measurements were tested by the iodometric titration method using KMnO_4. The results are discussed based on the effects of support material, catalyst preparation method, reaction time, and medium (type of halide and acid) on hydrogen peroxide yield in direct oxidation of hydrogen to produce hydrogen peroxide. Our results showed that the catalytic …

Exploring The Impact Of The Media On The Arranged Marriage And Dowry System In Goa, India, Lisa Ann Hickman

Theses and Dissertations (Comprehensive)

Indian women have been experiencing the arranged marriage and dowry system for centuries. The main objective of this study was to explore how television and cinematic programming impact tehse traditional and contextual issues. I used a phenomenological-hermeneutic research methodology, with a feminist pragmatist epistemology. I conducted a total of six personal inteviews with Hindu women from Goa, India. Three participants were married in the 1980s while the other three were married after 2000. Five themes emerged from the interviews that shed some light at the issues under exploration: a) media exposure betwen childhood and marriage; b) love vs. arranged marriage; …

The Role Of Christian Faith In The Acculturation And Identity Development Of Chinese Immigrant Youth, Lynn Chyi-Ing Liao

Theses and Dissertations (Comprehensive)

Immigration is a life-altering experience that significantly contributes a context for identity formation, a critical and salient task during the years of late adolescence and emerging adulthood. Religion as a influential factor in the lives of youth has often been overlooked and considering the transnational quality of Christianity, it may have an important role to play in the acculturation and identity development of immigrant youth.

In this qualitative study, I chose to interview Chinese immigrant youth aged 18-23, who are recent immigrants and self-identify as Christian. The central idea of this exploratory inquiry is that each individual interprets experiences of …

A Survey Of The Perceptions Of The Senior Students On The Achievement Of The Jesuit Educational Ideals In Two Jesuit Secondary Schools In Madagascar, Jean De Dieu Randrianaivo

Doctoral Dissertations

unavailable

The Perceptions Of Volunteers Regarding Their Motives, Rewards, And Challenges At The Saint Anthony Foundation In San Francisco, California, Godbertha K. Muganda

Doctoral Dissertations

unavailable

Jaula De Oro : Growing Up As An Undocumented Latin@ Immigrant In The United States, Juancarlos Arauz

Doctoral Dissertations

unavailable

The Implications Of Technology For Women Of Pakistan In Higher Education : A Qualitative Analysis, Anniqua Rana

Doctoral Dissertations

unavailable

Undergraduate Students' Perceptions Of Their Holocaust And Genocide Education, Carol Berry Hurwitz

Doctoral Dissertations

unavailable

Touching The Spirit As A Motivating Factor For African American Students To Achieve Academic Excellence, E'Leva D.H. Gibson

Doctoral Dissertations

unavailable

Success Factors In Mergers And Acquisitions : Complexity Theory And Content Analysis Perspectives, Lena Petsa-Papanicolaou

Doctoral Dissertations

unavailable

Through The Lens Of The Adolescent : A Survey Of At-Risk Behaviors, Sandra L. Ahmann

Doctoral Dissertations

unavailable

Closing The Digital Divide : An Assessment Of Urban Graduate Teacher Education Students' Knowledge Of Information Literacy And Their Readiness To Integrate Information Literacy Into Their Teaching, Tyrone Heath Cannon

Doctoral Dissertations

unavailable

Dislocated Worker Training And Education Perceptions: The Effect Of Tailored Information, Self-Concept, And Role Salience On Self-Reported Deterrents To Education Participation, Lisa A. Row

STEMPS Theses & Dissertations

This study investigated whether selected information would change dislocated workers' deterrents to education participation. The study also explored whether information presentation method altered the participants' perceived deterrents. Finally, the study explored whether self-concept or role salience as a student moderated information reception.

The population included North Carolina workers pending job dislocation from three manufacturing plants. The final analysis included results from 194 workers. Participants were randomly assigned to groups using a roster having random group assignments and case numbers.

A three-group, quasi-experimental design explored changes in education deterrents. Three instruments provided data: the Adult Learning Questionnaire, Tennessee Self-Concept Scale, Second …

Analysis Of Ultraviolet Energy Distribution In Uv Disinfection Systems Using Monte Carlo Ray -Trace Method, Khoi Trung Nguyen

Civil & Environmental Engineering Theses & Dissertations

Determination of fluence rate in ultraviolet (UV) disinfection systems is a crucial part in evaluating disinfection efficiency of the systems. A robust Monte Carlo Ray Trace (MCRT) method has been developed to determine fluence rates in three-dimensional space of the systems. This is a statistical sampling method in which millions of random light energy bundles are simulated from the axis of each UV lamp and traced through the system until their energies reduce to a minimum threshold level. Inherent phenomena including refraction through quartz tubes, specular reflection at quartz tube surfaces, and absorption by quartz and water, along with specific …

Freelib: A Self-Sustainable Peer-To-Peer Digital Library Framework For Evolving Communities, Ashraf A. Amrou

Computer Science Theses & Dissertations

The need for efficient solutions to the problem of disseminating and sharing of data is growing. Digital libraries provide an efficient solution for disseminating and sharing large volumes of data to diverse sets of users. They enable the use of structured and well defined metadata to provide quality search services. Most of the digital libraries built so far follow a centralized model. The centralized model is an efficient model; however, it has some inherent problems. It is not suitable when content contribution is highly distributed over a very large number of participants. It also requires an organizational support to provide …

Assurance Services As A Substitute For Law In Global Commerce, Margaret M. Blair, Cynthia A. Williams, Li-Wen Lin

All Faculty Publications

In this article we examine the rapid emergence and expansion of a private-sector compliance and enforcement infrastructure that we believe may increasingly be providing a substitute for public and legal regulatory infrastructure in global commerce, especially in developing countries where rule of law is weak and court systems are absent or inadequate. This infrastructure is provided by a proliferation of performance codes and standards, and a rapidly-growing global army of privately-trained and authorized inspectors and certifiers that we call the "third-party assurance industry." The growth in the third party assurance business has been phenomenal in the last decade. The business …

A Prisoners' Charter? Reflections On Prisoner Litigation Under The Canadian Charter Of Rights And Freedoms, Debra Parkes

All Faculty Publications

This paper examines over twenty years of prisoner litigation under the Canadian Charter of Rights and Freedoms, beginning with a brief consideration of the social and political context for prisoners into which the Charter was entrenched in 1982, before moving on to consider a variety of successful and unsuccessful prisoners' Charter claims. The author notes some ways in which the impact of the Charter has been diminished at the prison walls, including through a lack of full and meaningful access by prisoners to courts or other means of independent review of prison decisions and conditions, as well as by the …

Back-End Sentencing A Practice In Search Of A Rationale, Jeremy Travis

Publications and Research

No abstract provided.

Crime Volume And Law And Order Culture, Steven Stack, Liqun Cao, Amy Adamczyk

Publications and Research

The literature on public opinion about crime and justice has neglected the exploration of macro‐ or community‐level influences on individual‐level attitudes. A key macrofactor that may be related to individual level attitudes is the volume of violent crime. High crime rates can facilitate the development of a culture of “law and order,” a response that may be a practical or instrumental attempt to control crime. The present paper tests the hypothesis that persons residing in nations marked by a high volume of crime will be more likely to adhere to elements of a law and order culture. It employs data …

Punitive Damages In The United States, Jack M. Beermann

Faculty Scholarship

his article is an attempt to acquaint the reader with contemporary legal issues surrounding punitive damages in the United States. Pursuant to U.S. federalism, most private law in the United States is state law and can vary significantly from state to state. Contract law, tort (injury) law, property law and criminal law are mainly state law. Many of these areas are governed largely by common law which means that there are no statutes, and courts make the law in the course of resolving individual legal controversies. It is the state common law of injury that allows punitive damages in the …

Digital Watermarking And Self-Authentication Using Chirp Coding, Jonathan Blackledge

Articles

This paper discusses a new approach to ‘watermarking’ digital signals using linear frequency modulated or ‘chirp’ coding. The principles underlying this approach are based on the use of a matched filter to provide a reconstruction of a chirped code that is uniquely robust, i.e. in the case of very low signal-to-noise ratios.

Chirp coding for authenticating data is generic in the sense that it can be used for a range of data types and applications (the authentication of speech and audio signals, for example). The theoretical and computational aspects of the matched filter and the properties of a chirp are …

Subways As A Space Of Cultural Intimacy: The Mass Rapid Transit System In Taipei, Taiwan, Anru Lee

Publications and Research

No abstract provided.

Southern Green Revolution: Urban Environmental Activism In Kaohsiung, Taiwan, Anru Lee

Publications and Research

No abstract provided.