Physical Sciences and Mathematics Commons^™

Simultaneous Determination Of Multiple Actinide Elements In A Variety Of Soils Utilizing A Standardized Sequential Extraction Protocol, Sherry Alina Faye

UNLV Theses, Dissertations, Professional Papers, and Capstones

To obtain a better understanding of the mobility of actinide element contaminants in the environment, the association of the contaminants with specific host phases of soils and sediments must be investigated. This investigation is most commonly conducted using sequential extraction techniques that employ the selective dissolution of soil phases with increasingly aggressive chemical treatment. Though several sequential extraction studies exist in literature, conclusions cannot be made by direct comparison of data due to the lack of uniformity in the protocols used. This work aims to continue development of a standard sequential extraction protocol and expanding its capabilities to include the …

Self-Assembly And Ring-Opening Metathesis Polymerization Of A Bifunctional Carbonate–Stilbene Macrocycle, Yuewen Xu, Weiwei L. Xu, Mark D. Smith, Linda S. Shimizu

Faculty Publications

No abstract provided.

Development Of Presumptive And Confirmatory Analytical Methods For The Simultaneous Detection Of Multiple Improvised Explosives, Kelley L. Peters

FIU Electronic Theses and Dissertations

In recent years, there has been a dramatic increase in the use of improvised explosive devices (IEDs) due to ease of synthesis and improved controls placed on commercial/military explosives. Commonly used materials for IED preparations include fertilizers and industrial chemicals containing oxidizers such as ClO₃^-, ClO₄^-, and NO₃^-, as well as other less stable compounds, such as peroxides. Due to these materials having a wide range of volatility, polarity, and composition, detection can be challenging, increasing the amount of time before any analytical information on the identity of the explosive can …

Using Interviews In Cer Projects: Options, Considerations, And Limitations, Deboarh G. Herrington, Patrick L. Daubenmire

Peer Reviewed Articles

Interviews can be a powerful chemistry education research tool. Different from an assessment score or Likert-scale survey number, interviews can provide the researcher with a way to examine and describe what we cannot see, aspects such as feelings, thoughts, or explanations of thinking or behavior. Most people have no doubt seen countless interviews on TV news and talk shows. These sessions might convey interviewing as a spontaneous, easy, and straightforward process. However, using interviews as a meaningful research tool requires considerable thought, preparation, and practice. This chapter provides a general introduction to the use of interviews as a tool within …

The Potlib Library Of Potential Energy Functions And A New Global Analytic Pes For The H + O2 Reaction, Ronald Duchovic

Ronald J. Duchovic

No abstract provided.

A Quasiclassical Trajectory Study Of The Reaction H + O2 Oh + O With The O2 Reagent Vibrationally Excited, Ronald Duchovic, Marla Parker

Ronald J. Duchovic

No abstract provided.

[Erratum] A Correction To The Potlib Library Described In "Potlib 2001: A Potential Energy Surface Library For Chemical Systems": [Computer Physics Communications 144 (2002) 169-187], Ronald Duchovic

Ronald J. Duchovic

No abstract provided.

The Potlib As A Means Of Disseminating Pess, Ronald Duchovic

Ronald J. Duchovic

No abstract provided.

Distribution Of Dissolved Trace Metals And Carbon System Parameters In The Surface Waters Of The Hillsborough River And Tampa Bay, Matthew Matthias Elliott

USF Tampa Graduate Theses and Dissertations

This work represents a first look at the general spatial distribution of trace metals and the inorganic carbon system in the surface waters of Tampa Bay. Tampa Bay's chemical environment bears many influences ranging from hydrological and geological to anthropogenic and meteorological. A large y-shaped estuary on the west-central side of the Florida Peninsula, Tampa Bay extends over 400 square miles and has a 2200 square mile watershed that includes extensive swamps, scrub, agricultural lands and densely urbanized areas. Reaching 37 miles from the northernmost point of Old Tampa Bay to the mouth of the estuary near the Sunshine Skyway …

Building An Online Teaching Community: An Evolving Tale Ofcommunication, Collaboration, Andchemistry, Barbara Reisner, Hilary Eppley, Margret Geselbracht, Elizabeth Jamieson, Adam Johnson, Sheila Smith, Joanne Stewart, Lori Watson, Scott Williams

Hilary J. Eppley

The Interactive Online Network of Inorganic Chemists (IONiC) has grown from a small group of faculty to a national and international network focused on improving inorganicChemistry learning. IONiC’s vision is to create a community of teachers and learners who make teaching visible using social networking tools to share, discuss, test, and assess their teaching methods. The features that have allowed the IONiC community to develop and grow and IONiC’s vision for the future are described. It is likely that the lessons learned apply to other groups seeking to develop professional communities through social networking.

Ionic: A Cyber-Enabled Community Of Practice For Improving Inorganic Chemicaleducation, Hilary Eppley, Adam Johnson, Ethan Benatan, Margret Geselbracht, Joanne Stewart, Barbara Reisner, Lori Watson, B. Williams

Hilary J. Eppley

IONiC’s purpose is to enhance the inorganicChemistry classroom and laboratory experience for students and faculty members through the development of a vibrant virtual “community of practice”.

Jce Viper: An Inorganic Teaching And Learning Community, Ethan Benatan, Jezmynne Dene, Hilary Eppley, Margret Gesebracht, Elizabeth Jamieson, Adam Johnson, Barbara Reisner, Joanne Stewart, Lori Watson, B. Williams

Hilary J. Eppley

To facilitate the effective sharing of teaching tools among faculty and the development of deep subject knowledge in support of teaching, a group of faculty from predominantly undergraduate institutions has established a virtual community of inorganic chemists, IONiC (Interactive Online Network of Inorganic Chemists). Our mission is to enhance the inorganicChemistry classroom and laboratory experience for students and faculty members through the development of a vibrant, collaborative, and open community. VIPEr, the Virtual Inorganic Pedagogical Electronic Resource, is a Web site that forms the online home for our community. VIPEr is an interactive Web resource that combines a repository of …

College Of Science And Mathematics Newsletter, Fall 2014, College Of Science And Mathematics, Wright State University

College of Science and Mathematics Newsletters

This 8 page newsletter discusses various happenings within the College of Science and Mathematics. It begins with a letter from the dean, and continues on with news, events, alumni news, and other community news.

Chemistry Department Newsletter 2014, Ken Overway

Chemistry Department Newsletters

This document contains a summary of news and events from the chemistry department from the 2013-2014 academic year.

The Periodical Fall 2014, Southern Adventist University

the Periodical – Chemistry Department Newsletter

Volume 1, issue 2 of the Periodical includes articles about Brent Hamstra accepting the Chair position, a student missions feature, Chemistry Club news, pictures of the department's Candyland decorations for National Chemistry Week, an alumni spotlight, and listing of December 2014 graduates.

Laboratory Measurements Of Contact Freezing By Dust And Bacteria At Temperatures Of Mixed-Phase Clouds, Joseph Niehaus, John Becker, Alexander Kostinski, Will Cantrell

Department of Physics Publications

Laboratory measurements of freezing by aerosol particles in contact mode are presented. The fraction of particles catalyzing freezing is quantified for three mineral dusts and three strains of bacteria. This is the most comprehensive such dataset to date for temperatures greater than −20°C, relevant for warm, mixed-phase clouds. For Arizona Test Dust, feldspar, or rhyolitic ash, more than 10³ particles are required to initiate a freezing event at −20°C in the contact mode. At −15°C, more than 10⁵ particles are required. An ice-negative strain of Pseudomonas fluorescens is an order of magnitude more effective than the mineral dusts …

Regulating Signal Enhancement With Coordination-Coupled Deprotonation Of A Hydrazone Switch, Justin T. Foy, Debdas Ray, Ivan Aprahamian

Dartmouth Scholarship

Proton relay plays an important role in many biocatalytic pathways. In order to mimic such processes in the context of molecular switches, we developed coordination-coupled deprotonation (CCD) driven signaling and signal enhancement sequences. This was accomplished by using the zinc(ii)-initiated CCD of a hydrazone switch to instigate an acid catalyzed imine bond hydrolysis that separates a quencher from a fluorophore thus leading to emission amplification. Because CCD is a reversible process, we were able to show that the catalysis can be regulated and turned “on” and “off” using a metalation/demetalation cycle.

Fall 2014

Scientia

CSH progress notes; Alumna entrepreneur finds success at the intersection of chemistry and law; Lions, lycopods and laboratories: CSH students thrive in summer internships; Fielding a team for a mission to Mars; Professor Craig Klugman on the medical humanities; Lab Notes

Low Voltage Electrowetting Device And Method For Making Same, Yuguang Cai, Xiaoning Zhang

Chemistry Faculty Patents

An electrowetting device includes a substrate having a first face, a charged adhesion layer immobilized on the first face of the substrate and a dielectric layer bound to the charged adhesion layer. An unbound ionic liquid phase contacts the dielectric layer.

Polymorphism In Myristoylpalmitoylphosphatidylcholine., Stephanie Tristram-Nagle, Yisrael Isaacson, Yulia Lyatskaya, Yufeng Liu, Kay Brummond, John Katsaras, John Nagle

Prof. Stephanie Tristram-Nagle Ph.D.

This study focuses on the mixed-chain lipid myristoylpalmitoylphosphatidylcholine (MPPC) near full hydration. The lipid, synthesized according to the procedure of (Mason et al., 1981a, has a low degree of acyl chain migration. When MPPC is temperature-jumped (T-jumped) from the L alpha phase (T = 38 degrees C) to T = 20 degrees C or below, a subgel phase forms; this formation takes less than 1 h at a temperature below T = 12 degrees C. The subgel remains stable up to T = 29 degrees C. When MPPC is T-jumped from the L alpha phase to T = 24 degrees …

Collaborative Chemical Information Literacy: Is It "Scholarly?", Barbara C. Harvey

Barbara C. Harvey

This symposium illustrates a collaborative classroom activity that incorporates information literacy into an introductory chemistry course. The primary learning outcomes of the activity are to understand the peer-review process, knowing how to locate original research articles based on “clues” in a general news article, and how to differentiate between popular and scholarly periodicals. Students work in small groups in a highly-collaborative classroom setting. Each group is given a recent chemistry-related news item, and must determine how and where to find the original research article the news item is based on. Emphasis is placed on identifying original, peer-reviewed research publications. Each …

Development And Application Of Explicitly Correlated Wave Function Based Methods For The Investigation Of Optical Properties Of Semiconductor Nanomaterials, Jennifer Mary Elward

Dissertations - ALL

Semiconductor nanoparticles, or quantum dots (QDs), are well known to have very unique optical and electronic properties. These properties can be controlled and tailored as a function of several influential factors, including but not limited to the particle size and shape, effect of composition and heterojunction as well as the effect of ligand on the particle surface. This customizable nature leads to extensive experimental and theoretical research on the capabilities of these quantum dots for many application purposes.

However, in order to be able to understand and thus further the development of these materials, one must first understand the fundamental …

A Novel Dual Allosteric Activation Mechanism Of Escherichia Coli Adp-Glucose Pyrophosphorylase: The Role Of Pyruvate, Matías D. Asención Diez, Mabel C. Aleanzi, Alberto A. Iglesias, Miguel Ballicora

Chemistry: Faculty Publications and Other Works

Fructose-1,6-bisphosphate activates ADP-glucose pyrophosphorylase and the synthesis of glycogen in Escherichia coli. Here, we show that although pyruvate is a weak activator by itself, it synergically enhances the fructose-1,6-bisphosphate activation. They increase the enzyme affinity for each other, and the combination increases Vmax, substrate apparent affinity, and decreases AMP inhibition. Our results indicate that there are two distinct interacting allosteric sites for activation. Hence, pyruvate modulates E. coli glycogen metabolism by orchestrating a functional network of allosteric regulators. We postulate that this novel dual activator mechanism increases the evolvability of ADP-glucose pyrophosphorylase and its related metabolic control.

College Of Science And Mathematics Newsletter, Summer 2014, College Of Science And Mathematics, Wright State University

College of Science and Mathematics Newsletters

This 9 page newsletter discusses various happenings within the College of Science and Mathematics. It begins with a letter from the dean, and continues on with news, events, alumni news, and other community news.

Nanocarbon Immobilized Membrane For Separation And Analysis, Madhuleena Bhadra

Dissertations

Membrane processes classically cover a wide range of applications associated with various aspects of separation and purification. Over the last few years, membrane based processes have received much interest due to their compact and modular architecture, low energy consumption and cost effective separation. With the development of diverse nanomaterials which can serve as nanosorbents, or provide specific morphology for selective solute transport, recent years have witnessed the emergence of nanocarbon based membranes that can address some of the limitations of conventional membrane processes and make feasible the next generation of breakthroughs.

The objective of this research is the exploration of …

Syntheses Of Precursors To Fluorine-18 Labeled Pet Imaging Agents, Lindsay B. Boling

Chancellor’s Honors Program Projects

No abstract provided.

Characterization And Optimization Of Extraction Chromatography Resins For Rapid Separations For Safeguard And Nuclear Forensics Purposes, Audrey Roman

UNLV Theses, Dissertations, Professional Papers, and Capstones

In this work, extraction chromatography resins, DGA and UTEVA, were characterized under various conditions in order to identify novel rapid separations for safeguards and nuclear forensic purposes. For safeguards purposes, mixed matrices containing some of the largest components found in used fuel and either Am, Pu, or U were characterized on DGA and UTEVA resins in order to determine any effects from the addition of these constituents. Results indicated that 5 M HNO₃ would be an optimal loading condition due to the consistent actinide adsorption in the presence of the additional used fuel components. Investigations of varying the anion …

Case Study Of A Successful Educational Partnership: University Of Illinois At Urbana-Champaign And The Illinois Mathematics And Science Academy, Dave Devol

Faculty Publications & Research

This article describes partnerships between an NCSSSMST member institution and a research university and the use of student-generated survey data as a means of both professional self-reflection and asking further questions. As a chemist, I have been trained to write in the style of scientists, and in fact I teach a course at the Illinois Mathematics and Science Academy on the methods of science and scientific writing. This article is intentionally not written in a scientific style; rather is written to convey a story of how a partnership between institutions naturally progressed into my current area of research into motivational …

College Of Science And Mathematics Newsletter, Spring 2014, College Of Science And Mathematics, Wright State University

College of Science and Mathematics Newsletters

This 9 page newsletter discusses various happenings within the College of Science and Mathematics. It begins with a letter from the dean, and continues on with news, events, alumni news, and other community news.

Isolation Of Antibacterial Compounds From Artemisia Californica, Jae Eun Min

Seaver College Research And Scholarly Achievement Symposium

The Chumash Native Americans of Southern California have well-documented traditions of using plants for medicinal purposes. If a specific plant has traditionally been used by Chumash for the treatment of cuts, wounds and infections, it may contain chemicals with anti-bacterial properties. One plant that fits these criteria is Artemisia californica (coastal sage). Because of the widespread use of antibiotics over the past sixty years bacteria are evolving greater resistance to known antibiotics, but unfortunately the rate of antibiotic discovery has diminished during the past twenty years. Therefore, novel and effective antibiotics are essential for the continued treatment of bacterial infections. …