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Evaluating Sub-Lethal Effects Of Orchard-Applied Pyrethroids Using Video-Tracking Software To Quantify Honey Bee Behaviors, Erin M. Ingram, Julie Augustin, Marion D. Ellis, Blair Siegfried 2015 University of Nebraska-Lincoln

Evaluating Sub-Lethal Effects Of Orchard-Applied Pyrethroids Using Video-Tracking Software To Quantify Honey Bee Behaviors, Erin M. Ingram, Julie Augustin, Marion D. Ellis, Blair Siegfried

Faculty Publications: Department of Entomology

Managed honey bee, Apis mellifera L., colonies are contracted to pollinate fruit and nut orchards improving crop quality and yield. Colonies placed in orchards are potentially exposed to pyrethroid insecticides used for broad-spectrum pest control. Pyrethroids have been reported to pose minimal risk to bees due to their low application rates in the field and putative repellent properties. This repellency is believed to alter foraging behavior with the benefit of preventing bees from encountering a lethal dose in the field. However, sub-lethal exposure to pyrethroids may adversely impact bee behavior potentially resulting in social dysfunction or disruption of foraging.

This ...


Three-Dimensional Scaffolds Of Graphene, Carbon Nanotubes And Transition-Metal Oxides For Applications In Electronics, Sensors And Energy Storage, Gilbert N. Mbah 2015 University of Nebraska-Lincoln

Three-Dimensional Scaffolds Of Graphene, Carbon Nanotubes And Transition-Metal Oxides For Applications In Electronics, Sensors And Energy Storage, Gilbert N. Mbah

Student Research Projects, Dissertations, and Theses - Chemistry Department

Electronics, sensors and energy storage devices are the new waves behind economic development, security and communication1. Engineering small sizes of electronic, sensors and energy storage devices is the hurdle limiting efficient, portable and vast applications of Nano-devices for economic, security and communication advancement2. Silicon the major material used in transistors has approached its limit to fabricated Nano-devices3. The discovery of free standing, one atomic layer thick and two-dimensional graphene sheets with high conductivity, inert, high specific surface area, stable and high tensile strength material in 2004 has shown capabilities to replaced silicon in electronics, sensors and energy ...


Linkage Analysis And Compositional Studies Of Β-Glucan From Saccharomyces Cerevisiae And Compositional Studies Of Mannan From Candida Albicans, Clara Arthur 2015 East Tennessee State University

Linkage Analysis And Compositional Studies Of Β-Glucan From Saccharomyces Cerevisiae And Compositional Studies Of Mannan From Candida Albicans, Clara Arthur

Electronic Theses and Dissertations

The efficacy of a novel carbohydrate extraction procedure was investigated with methylation analysis and alditol acetate method by Gas Chromatography-Mass Spectrometry. A published extraction procedure for β-glucans was compared to one developed in house. Both procedures gave a dominant glucose peak in the Gas chromatogram indicative of successful β-glucan isolation. Further linkage studies showed four linkage positions for β-glucans isolated with the published method; terminal, 1,3-linkage, 1,6-linkage and 1,3,6-linkage, while β-glucans isolated using the new method showed six linkage positions; terminal, 1,3-linkage, 1,6-linkage, 1,4-linkage, 1,2,3-linkage and 1,3,6-linkage. Diminishing β-glucan ...


Forensic Significance Of Teal Colored Cashmere And Black Acrylic Fibers, Nicole M. Martin 2015 State University of New York Buffalo State

Forensic Significance Of Teal Colored Cashmere And Black Acrylic Fibers, Nicole M. Martin

Forensic Science Theses

Textile fibers are a valuable type of trace evidence within forensic cases. They have the ability to connect a perpetrator to a victim and or a crime scene. Some types of fibers are more prevalent than others. The purpose of this research was to conduct a target fiber study in order to determine the significance of the selected fibers in a forensic case. Two fibers were selected from two different garments, black acrylic fiber and a teal colored cashmere fiber. Unknown fibers were collected from three local clothing stores and counted. Using light microscopy, all 20,164 fibers were eliminated ...


Using Ion Mobility Spectrometry To Study Protein Conformations In The Gas Phase, Yu Sun 2015 The University of Western Ontario

Using Ion Mobility Spectrometry To Study Protein Conformations In The Gas Phase, Yu Sun

University of Western Ontario - Electronic Thesis and Dissertation Repository

The question whether electrosprayed protein ions retain solution-like conformations remains a matter of debate. One way to address this issue involves comparisons of collision cross sections measured by travelling wave ion mobility spectrometry (TWIMS) with the values calculated for model structures. It is often implied that nanoESI is more conducive for the retention of solution structure than regular ESI. Focusing on four different proteins we demonstrated that collision cross section values and collisional unfolding profiles are virtually indistinguishable under both conditions. Calibration can be challenging because differences in the extent of collisional activation for TWIMS and drift tube calibrant data ...


Building An Undergraduate Cohort In High Altitude Ballooning, Mike Davis 2015 Truman College

Building An Undergraduate Cohort In High Altitude Ballooning, Mike Davis

2015 Academic High Altitude Conference

City Colleges of Chicago (CCC), in partnership with DePaul University and the Illinois Space Grant Consortium, has recently been awarded a grant from NASA to develop a research and education program in high-altitude ballooning. The project builds on the Chicago Initiative for Research and Recruitment in the Undergraduate Sciences (CIRRUS) model of undergraduate research and community college/four year college collaborative projects, a successful NSF-funded collaboration between DePaul and CCC. The project has four goals: (1) initiate a year-round undergraduate research program to recruit promising community college students into the STEM disciplines, (2) provide tuition support and fellowships to support ...


Chemical Biology Of Protein Arginine Modifications In Epigenetic Regulation, Jakob Fuhrmann, Kathleen W. Clancy, Paul R. Thompson 2015 The Scripps Research Institute

Chemical Biology Of Protein Arginine Modifications In Epigenetic Regulation, Jakob Fuhrmann, Kathleen W. Clancy, Paul R. Thompson

Thompson Lab Publications

Review article on histone citrullination (arginine deimination), histone arginine methylation, and noncanonical histone arginine modifications.


Nitrogen Issues So Far This Spring, John E. Sawyer 2015 Iowa State University

Nitrogen Issues So Far This Spring, John E. Sawyer

Integrated Crop Management News

Across the state, generally there has not been excessive precipitation and much of Iowa has been below normal the past 60 days. A few areas have received more than normal precipitation, mostly in western to southwestern Iowa, some isolated areas in central to north central Iowa, and very eastern Iowa (see map).


Forensic Significance Of Teal Colored Cashmere And Black Acrylic Fibers, Nicole M. Martin 2015 State University of New York Buffalo State

Forensic Significance Of Teal Colored Cashmere And Black Acrylic Fibers, Nicole M. Martin

Nicole M Martin

Textile fibers are a valuable type of trace evidence within forensic cases. They have the ability to connect a perpetrator to a victim and or a crime scene. Some types of fibers are more prevalent than others. The purpose of this research was to conduct a target fiber study in order to determine the significance of the selected fibers in a forensic case. Two fibers were selected from two different garments, black acrylic fiber and a teal colored cashmere fiber. Unknown fibers were collected from three local clothing stores and counted. Using light microscopy, all 20,164 fibers were eliminated ...


Research For The Advancement Of Green Chemistry Practice: Studies In Atmospheric And Educational Chemistry, Steven Gene Cullipher 2015 University of Massachusetts Boston

Research For The Advancement Of Green Chemistry Practice: Studies In Atmospheric And Educational Chemistry, Steven Gene Cullipher

Graduate Doctoral Dissertations

Green chemistry is a philosophy of chemistry that emphasizes a decreasing dependence on limited non-renewable resources and an increasing focus on preventing pollution byproducts of the chemical industry. In short, it is the discipline of chemistry practiced through the lens of environmental stewardship. In an effort to advance the practice of green chemistry, three studies will be described that have ramifications for the practice. The first study examines the atmospheric oxidation of a hydrofluorinated ether, a third-generation CFC replacement compound with primarily unknown atmospheric degradation products. Determination of these products has the potential to impact decisions on refrigerant usage in ...


The Investigation Of The Low Temperature Combustion Of Mesitylene And Tert-Amyl Methyl Ether By Synchrotron Photoionization Mass Spectrometry, Martin Yu-Hin Ng 2015 University of San Francisco

The Investigation Of The Low Temperature Combustion Of Mesitylene And Tert-Amyl Methyl Ether By Synchrotron Photoionization Mass Spectrometry, Martin Yu-Hin Ng

Master's Theses

This thesis describes the combustion experiments performed at the Chemical Dynamics Beamline of the Advanced Light Source (ALS) located at the Lawrence Berkeley National Laboratories (LBNL). The need for renewable fuel sources, the need for the study of their combustion in the contexts of homogenous charge combustion ignition (HCCI) engines can be found in Chapter 1. The components of the experimental set-up used throughout this thesis—time-of-flight mass spectrometer, Excimer laser, vacuum pumps and other components—and the components of ALS responsible in synchrotron radiation generation and processing—the linear accelerator, the booster ring, insertion devices, gas filters and monochromator ...


Nanodiamond Extraction At A Potential Impact Location, Joel Kathan 2015 DePaul University

Nanodiamond Extraction At A Potential Impact Location, Joel Kathan

DePaul Discoveries

Meteoritic or cometary impacts create the temperature and pressure conditions necessary to form nanodiamonds (NDs). The presence of extracted NDs from rocks of the time and locations of extinctions, fires, or known environmental changes are commonly used to confirm that a theorized cosmic impact occurred to trigger those events. Samples were obtained from an archeological site described in the Old Testament of the Bible as having been destroyed by the God of the Old Testament. To see if the historical description of Biblical events might have been triggered by a cometary impact or explosion, an attempt was made to isolate ...


Diol-Mediated Versus Water-Mediated Proton Transfer Reactions, Angela Moses 2015 DePaul University

Diol-Mediated Versus Water-Mediated Proton Transfer Reactions, Angela Moses

DePaul Discoveries

The triple-proton-transfer reactions of 8H-1,8-naphthyridin-2-one (8H-naph) have been investigated by employing different ab initio quantum mechanical methods. The proton transfer reactions studied were facilitated through an adjacent 1,3-propanediol molecule or two adjacent water molecules. Identical proton transfer reactions were studied using a model system of 8H-naph to investigate the validity of computational approaches that use model systems to study more complex systems. The solvent effects on the structures were investigated for comparison to the initial gas phase calculations. The potential energy, reaction force, and work profiles were studied along the intrinsic reaction coordinate to monitor the developing proton ...


Do Oaks With A Provenance Related To Warmer Climates Emit More Isoprene?, Elizabeth Carter 2015 DePaul University

Do Oaks With A Provenance Related To Warmer Climates Emit More Isoprene?, Elizabeth Carter

DePaul Discoveries

The hydrocarbon isoprene plays an important role in atmospheric chemistry, particularly in regards to air pollution and climate change. It is important to know why certain plant species emit isoprene and what factors affect its production in order to predict future air quality. Past research has indicated that isoprene aids in coping with heat stress, so it was hypothesized that source latitude (a proxy for climate) would significantly impact isoprene production by oaks grown in a common location. Twelve bur oaks collected from a latitudinal range (30-45˚) and raised at the Morton Arboretum were assayed for their isoprene emission rate ...


Exploring The Chemistry Of Phosphorus For Photopolymer Applications, Ryan Guterman 2015 The University of Western Ontario

Exploring The Chemistry Of Phosphorus For Photopolymer Applications, Ryan Guterman

University of Western Ontario - Electronic Thesis and Dissertation Repository

Prior to this thesis, phosphorus-containing polymers and photopolymerization represented two distinct, non-overlapping fields of study. This thesis examined the prospect of combining these two approaches to create a system possessing the benefits of both techniques. By exploiting the chemistry of phosphorus, and using photopolymerization as a fabrication method, new materials were developed and assessed for their use in various applications.

Among the many phosphorus compounds that may be used in polymer science, phosphonium salts and primary phosphines were of specific focus. First, highly fluorinated phosphonium monomers were developed to create photopolymerized hydrophobic surfaces. A structure-activity relationship was established, as both ...


Evaluation Of The Feasibility Of Struvite Precipitation From Domestic Wastewater As An Alternative Phosphorus Fertilizer Resource, Amanda R. Bird 2015 University of San Francisco

Evaluation Of The Feasibility Of Struvite Precipitation From Domestic Wastewater As An Alternative Phosphorus Fertilizer Resource, Amanda R. Bird

Master's Projects

Finite phosphate rock ore reserves are estimated to be exhausted in 100 to 150 years. Phosphate rock ore is the single global source material for phosphorus fertilizer production. Once these reserves are gone, agricultural production will be negatively impacted. There are currently no alternative phosphorus resources. However, phosphorus concentrations present in human excrement traveling through domestic wastewater treatment facilities is being disposed of directly to the environment, often resulting in pollution problems. Recovering phosphorus from wastewater with struvite precipitation systems at wastewater treatment plants can alleviate future phosphorus scarcities. Evaluation of phosphorus recovery through struvite precipitation at wastewater treatment plants ...


Electrolyte Effects On The Kinetics Of Comproportionation Electron-Transfer Reactions And On Intervalence Charge-Transfer Band Energies Of Binuclear Ruthenium Ammine Complexes, Zhiji Han 2015 University of San Francisco

Electrolyte Effects On The Kinetics Of Comproportionation Electron-Transfer Reactions And On Intervalence Charge-Transfer Band Energies Of Binuclear Ruthenium Ammine Complexes, Zhiji Han

Master's Theses

Chapter 1 describes an overview of electron-transfer reactions. The kinetic equations for ET reactions have also been described in detail.

Chapter 2 describes a series of novel kinetic accelerations which deviate strongly from the predictions of the classical Debye-Huckle theory with a range of different added “inert” electrolytes. The greater catalytic effects seen with the heavier halides and other catalytic electrolytes (especially certain dicarboxylates) indicate an important role for hole-transfer superexchange in the ET transition state. The hypothesis of a catalytic ternary association complex, [RuII--X--RuIII] has also been explored by kinetic modeling of the reaction. An increasing ratio of anion-catalyzed ...


Exploring The Chemistry Of Η5-Cyclopentadienyl-Cobalt-Η4-Cyclobutadiene Containing Polymers; Synthesis, Properties, And Self-Assembly, Mahboubeh Hadadpour 2015 The University of Western Ontario

Exploring The Chemistry Of Η5-Cyclopentadienyl-Cobalt-Η4-Cyclobutadiene Containing Polymers; Synthesis, Properties, And Self-Assembly, Mahboubeh Hadadpour

University of Western Ontario - Electronic Thesis and Dissertation Repository

Metal containing polymers (metallopolymers) bring together the synthetic efficiency and versatility of conventional organic polymers with unique redox, responsive, and catalytic properties of inorganic metals. Over the last decade, metallopolymers have gained increased attention because of their unique physical and chemical properties that arise from the incorporation of metal centers into a polymer. Since the first report on a metallocene-based metallopolymer in 1955, there has been growing interest in this class of material. Ferrocene-based metallopolymers represent the vast majority of metallocene containing polymers in the literature. In 1992, the Manners Group established a major milestone in the field of metallopolymers ...


Aggregation Properties Of Ionic Liquids In Low Polarity Solvents, Elise Cade 2015 The College at Brockport

Aggregation Properties Of Ionic Liquids In Low Polarity Solvents, Elise Cade

Senior Honors Theses

Ionic liquids are salts that are liquid below 100oC. Ionic liquids are of very low volatility and especially those ionic liquids with high conductivity and lower viscosities are used as medium for chemical synthesis and electrochemistry. Normally, salts do not dissolve in solvents of low polarity. However, many ionic liquids are very soluble or completely miscible in low polarity solvents and the physical chemistry of the resulting solutions is not well understood. The goal of our ongoing research is to elucidate the speciation (freely dissolved ions, ion pairs and aggregates) present for ionic liquids dissolved in solvents of low polarity ...


Monitoring Dissolution Of Nonsteroidal Anti-Inflammatory Drugs Using Infrared Spectroscopy, Julianne Berger 2015 bergerju

Monitoring Dissolution Of Nonsteroidal Anti-Inflammatory Drugs Using Infrared Spectroscopy, Julianne Berger

Seton Hall University Dissertations and Theses (ETDs)

A comparison study was conducted to look at the formulation of three brands of naproxen sodium. These brands included Bayer Aleve ®, CVS All Day Pain Relief and Walgreens All Day Pain Relief. The active and inactive ingredients were the same yet the size and shape of the tablets differ among the three brands. S-naproxen was extracted from the tablets and evaluated by GC-MS to determine the purity of naproxen in the tablets. Dissolution was monitored by an IR probe for eight hours while using 0.1M phosphate buffer pH 7.4, 0.05M phosphate buffer pH 4.5 and simulated ...


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