Digital Commons Network^™

Prospective Chemistry Teachers’ Evaluations About The Instruction Of The Graphic Organizers Course, Canan Nakiboglu

University of South Florida (USF) M3 Publishing

Graphic organizers (GOs) are visual teaching and learning tools that provide an organized expression of knowledge by explaining concepts and events. If the teachers incorporate the GOs into their lessons as instructional material and assessment tools, they can make the teaching period more effective and also help their students' understanding of the chemistry subjects. In this study, the prospective chemistry teachers (PCTs) attended a Graphic Organizers Course, and then their opinions regarding the evaluation of the course were taken. A total of 43 PCTs, 32 female and 11 male, who took the course in four different semesters, participated in this …

Physiological, Biochemical, And Metabolic Responses Of Wheat (Triticum Aestivum) Exposed To Perfluorooctanesulfonic Acid (Pfos), Polycarp Chidiebere Ofoegbu

Graduate Theses/Dissertations

The effects of perfluorooctanesulfonic acid (PFOS) on agricultural plants is a serious environmental concern that needs to be addressed. PFOS is a member of a class of organic chemical compounds known as per and polyfluoroalkyl substances (PFAS). These compounds are utility chemicals in household, commercial, and industrial items, but have become environmental contaminants of global concern. Full lifecycle and short-term exposure studies of wheat grown in soil amended with 0, 25, and 50 mg/kg PFOS were conducted to assess the impacts of PFOS on wheat. PFOS uptake analysis, physiological assays, elemental analysis, and metabolomics were carried out in the full …

Cyclic Sulfones From Double Conjugate Addition Of Rongalite, Hao Zong

Theses, Dissertations and Culminating Projects

We report a cyclic sulfone synthesis method from the addition of sodium hydroxymethanesulfinate to doubly electrophilic dienone substrates. The novel synthesis of the cyclic sulfone thus avoided the using the toxic and odorous sulfides, and also oxidizing reagents. We prepared both the symmetrical and unsymmetrical substrates, and then used the substrate for the synthesis of cyclic sulfone.

Targeted And Untargeted Chromatography-Mass Spectrometry Methods For Alcoholic Beverage Analysis, Hailee Elizabeth Ratcliffe

Chemistry & Biochemistry Dissertations - Archive

There has been an increased interest in the “craft” alcohol industry in recent years. Contrary to larger corporations that focus on standardizing their recipes for mass production, these small, independent businesses can experiment with ingredients and procedures to create unique and flavorful products. Beer and whiskey in particular have seen a surge in popularity, indicating the public may be interested in a deeper understanding of these beverages and their flavors on the chemical level. Brewing and distilling rely heavily on chemistry to perform the proper procedures to obtain the desired product, and to understand the interactions of the various ingredients. …

Recent Studies On The Synthesis Of Medicinal Molecules., Paige Monsen

Electronic Theses and Dissertations

Medicinal chemistry interfaces synthetic organic chemistry, natural product chemistry and chemical biology, with a goal of yielding therapeutic agents. Natural products or compounds derived from natural sources such as plants, animals, and microorganisms, are often biologically active and render that compound a likely drug lead. For thousands of years humankind has utilized natural products for medicinal purposes and consequently scientists take advantage of both these compounds’ core structural characteristics and their modes of actions on selected targets as inspiration to develop therapeutics. Because the total synthesis of such complex molecules can be cumbersome and expensive, semi-synthetic methods on isolated natural …

Nicarbazin As An Oral Contraceptive In Eared Doves, Lourdes Olivera, Silvia Pereyra, Georgget Banchero, Guillermo Tellechea, Jorge Sawchik, Michael L. Avery, Ethel Rodríguez

United States Department of Agriculture Wildlife Services: Staff Publications

Eared doves (Zenaida auriculata) are responsible for substantial losses in cereal and oil crops as well as in dairy and feedlot production in the southern cone of South America. Various strategies have been shown to be effective in reducing damage at the farm scale, but in some scenarios, it is necessary to also incorporate population control methods due to excessive bird population size. An alternative approach to reduce pest bird populations is the use of contraceptive methods, minimizing the impact on the environment and non-target populations. Nicarbazin is registered in the United States as a contraceptive for Branta …

Movement Analysis For Neurological And Musculoskeletal Disorders Using Graph Convolutional Neural Network, Ibsa K. Jalata, Thanh-Dat Truong, Jessica L. Allen, Han-Seok Seo, Khoa Luu

Computer Science and Computer Engineering Faculty Publications and Presentations

Using optical motion capture and wearable sensors is a common way to analyze impaired movement in individuals with neurological and musculoskeletal disorders. However, using optical motion sensors and wearable sensors is expensive and often requires highly trained professionals to identify specific impairments. In this work, we proposed a graph convolutional neural network that mimics the intuition of physical therapists to identify patient-specific impairments based on video of a patient. In addition, two modeling approaches are compared: a graph convolutional network applied solely on skeleton input data and a graph convolutional network accompanied with a 1-dimensional convolutional neural network (1D-CNN). Experiments …

Chemical Investigation Of Camu Camu (Myrciaria Dubia) Leaves And Roots, Jorge L. Flores

Theses and Dissertations

Flores, Jorge L., Chemical Investigation of Camu Camu (Myrciaria dubia) Leaves and Roots. Master of Science (MS), December, 2020, 45 pp., 8 Tables, 28 Figures, 21 references, 12 titles.Being the largest on the planet, the Amazon rainforest also has the greatest biodiversity of plant life on earth. In the lowland regions of the Amazon grows the Peruvian camu camu (Myrciaria dubia) plant. A short and shaggy shrub, camu camu produces a tasty but sour fruit. Camu camu’s berry-like fruit is widely consumed by the native people of the Amazon. Its distinguished richness in vitamin C, as …

Polycyclic Aromatic Hydrocarbons And The Microbiomes Of Two Benthic Species, Samantha Ells

Master's Theses

The presence of oil has been shown to affect the microbiomes of the water column, sediments, and organisms, both by altering the diversity and the composition of those microbial communities. If the microbiome is altered it may no longer provide benefits to its host organism, impacting its ability to survive. Thus, it is important to understand the effects of large-scale contamination events including the Deepwater Horizon oil spill. This study set out to examine the effects of oil exposure on the microbiome of two benthic species, southern flounder (Paralichthys lethostigma) and eastern oysters (Crassostrea virginica) to further understand the effects …

Biochar Applications To The Remediation Of Lead And Polychlorinated Biphenyl Contaminated Water, Victory Itua Igberase

Theses and Dissertations

This study investigated the performance of biochar materials as adsorbents to remove Pb and polychlorinated biphenyl (PCB) in aqueous solutions. Batch adsorption and column experiment packed with biochar and geomaterials (pumice) in 1:1 volume ratio was evaluated to address the efficacy of biochar in removing Pb while only batch adsorption was employed for PCB removal with biochar materials. Overall, PT biochars performed the best (42–53 mg g−1) followed by BE biochars (10–32 mg g−1) and AB biochars (17–27 mg g−1) while high temperature biochars were favored in terms of maximum Pb adsorption capacity. Column Pb breakthrough showed similar results, with …

Hardware For Quantized Mixed-Precision Deep Neural Networks, Andres Rios

Open Access Theses & Dissertations

Recently, there has been a push to perform deep learning (DL) computations on the edge rather than the cloud due to latency, network connectivity, energy consumption, and privacy issues. However, state-of-the-art deep neural networks (DNNs) require vast amounts of computational power, data, and energyâ??resources that are limited on edge devices. This limitation has brought the need to design domain-specific architectures (DSAs) that implement DL-specific hardware optimizations. Traditionally DNNs have run on 32-bit floating-point numbers; however, a body of research has shown that DNNs are surprisingly robust and do not require all 32 bits. Instead, using quantization, networks can run on …

Foliar Photodegradation In Pesticide Environmental Modeling, Sean M. Lyons

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The work described here was conducted to better understand how pesticides will behave following their application to crops or soil. This understanding will allow for better use of pesticides which will protect the environment and non-target organisms while remaining effective against pests. The Pesticide Dissipation form Agricultural Land (PeDAL) model was developed to simulate pesticide behavior following application and laboratory experiments focused on the photodegradation of select pesticides on alfalfa leaves were conducted to support this model.

Nitrogen Fertilizer Showed Little Effect On First- And Second-Year Corn Yield And Quality Following Alfalfa, Bailey Brent Shaffer

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Silage corn (Zea mays L.) following alfalfa (Medicago sativa L.) is a common crop rotation in Utah and southern Idaho. This is done, in part, to take advantage of residual nitrogen (N) fixed by bacteria that work in symbiosis with the roots of alfalfa. After alfalfa is terminated, much of the N that was fixed by the plant is released into the soil and becomes available for use by the rotational crop. This reduces the amount of N fertilizer that growers need to apply. The Utah Fertilizer Guide currently recommends an N credit to a rotational crop following …

The Effects Of Prescribed Burning On Soil Water Infiltration Rates And Other Select Soil Physical And Chemical Properties In East Texas, Cassady Pennington Dunson, Brian P. Oswald, Kenneth Farrish, Tyson Hart

Electronic Theses and Dissertations

This study focused on whether prescribed burning affects soil physical and chemical properties, especially water infiltration, in Western Gulf Coast forests. Soil water infiltration rates were measured 1) pre-burn (before the fire), 2) post-burn (one month after the fire), and 3) at vegetation green-up (three months after the fire). Soil samples were also collected to determine the effects of prescribed burning on soil pH, bulk density, particle density, pore space, soil strength, O-horizon weight and depth (organic matter), water stable aggregates, and soil fertility. This project was conducted on two different burn intervals. The National Forests and Grasslands of Texas …

Implementing Of Phase Potentiation Program With College Triathletes, David Fish

Electronic Theses and Dissertations

The purpose of this study is to determine the effectiveness of an in-season resistance training program on improving measures of strength in female collegiate triathletes. Nine females (age = 19.2 ± 1.1 years, height = 166.5 ± 12.5 cm, body mass = 61.1 ± 9 kg) with limited resistance training experience were examined for this study. Formal RT intervention was monitored for 7 weeks with the athletes being assigned 6 weeks of independent RT prior to the pre-test. Athletes completed a standardized athlete monitoring program pre and post resistance training intervention. Paired sample t-tests were used to determine differences …

Determination Of Temperature Thresholds For The Parasitoid Diachasmimorpha Longicaudata (Hymenoptera: Braconidae), Using Life Cycle Simulation Modeling: Implications For Effective Field Releases In Classical Biological Control Of Fruit Flies, Shepard Ndlela, Abdelmutalab G.A. Azrag, Samira A. Mohamed

All Peer-Reviewed Publications

The braconid parasitoid Diachasmimorpha longicaudata (Ashmead) (Hymenoptera: Braconidae) is one of the most important natural enemies in classical biological control programs against tephritid fruit flies worldwide. In light of the spread of the invasive fruit fly species, Bactrocera dorsalis in Africa and beyond, there is a need to implement classical biological control. The current study aimed to determine temperature thresholds for D. longicaudata reared on B. dorsalis, using life cycle simulation modeling to guide informed parasitoid releases in Africa. Simulated parameters included thermal requirements, population growth parameters at different temperature requirements, suitable areas for the establishment, and the number of …

Microscopic Object Classification Through Passive Motion Observations With Holographic Microscopy, Christian Lindensmith, Jay Nadeau, Manuel Bedrossian, Louis Sumrall, J. Kent Wallace, Eugene Serabyn

Physics Faculty Publications and Presentations

Digital holographic microscopy provides the ability to observe throughout a volume that is large compared to its resolution element without the need to refocus through the volume. This capability enables simultaneous observations of large numbers of small objects within such a volume. We have constructed a microscope that can observe a volume 0.4 x 0.4 x 1.0 μm with submicrometer resolution for observation of microorganisms and minerals in liquid environments in earth and on potential planetary missions. Because environmental samples are likely to contain mixtures of inorganics and microorganisms that are of comparable sizes near the resolution limit of the …

Tropical Forages For Monogastric Animals: Enhancing Smallholders Competitiveness In Local And Emerging Markets, Michael Peters, D. White, L. S. Muñoz, P. Sarria, N. Vivas, F. Holmann, M. Lundy, T. Oberthur, P. Lentes, A. Schmidt, Martin Mena, S. Fujisaka

IGC Proceedings (1977-2023)

No abstract provided.

Sustaining Pastoral Linkages To High‐Value Livestock Markets Through Collective Action And Public‐Private Partnerships: A Case Study From Southern Ethiopia, S. Desta, D. Layne Coppock, G. Gebru, S. Tezera, L. Gizachew

IGC Proceedings (1977-2023)

No abstract provided.

Super Solar, William Wilton

Honors Program: Expanded Learning Clubs

No abstract provided.

Phragmites Australis Dieback In The Mississippi River Delta: Chemical Profiles Of Soil Types And Restoration Potential, Herie Lee

LSU Master's Theses

Since 2016, there has been widespread dieback of P. australis in the Lower Mississippi River Delta (hereafter referred to as Lower MRD, which is defined as the Birds Foot Delta) with relatively little to no signs of recovery. The cause of the current dieback is not fully understood. This thesis explores P. australis with emphasis on chemical profile characterization of different soil types and its effects on plant growth and the potential for restoration in the Lower MRD.

In chapter 2, I characterized the chemical profiles of soils collected from healthy and dieback stands of Phragmites, and from newly …

Assessing The Impact Of Organic Versus Conventional Agricultural Management On Soil Hydraulic Properties In A Long-Term Experiment, Abdelrahman Alfahham, Matthew T. Amato, Emmanuel Omondi, Daniel Giménez, Alain F. Plante

Agricultural and Environmental Sciences Faculty Research

Investigating the effects of various agricultural management systems on soil hydraulic properties in long-term field experiments allows farmers to evaluate their efficacy in mitigating the effects of droughts and floods, which are expected to intensify in the coming decades. This study's main objective was to quantify soil structural and hydraulic properties in plots under organic manure, organic leguminous, and conventional agricultural management and related tillage practices at Rodale Institute's Farming Systems Trial. Soil cores were collected at depths of 0–10, 10–20, and 20–30 cm and analyzed for soil water retention, saturated hydraulic conductivity (Ksat), soil organic C (SOC), bulk density, …

A Comparison Study Among The High School Students In The Us: Obesity And Overweight Rates Among Racial Minorities—Stress, Dietary Behavior, Sports And Physical Activity Participation, Animesh Dali '24, Naima Shifa

Student Research

Background: The Youth Risk Behavior Surveillance System (YRBSS) collects data on American youth primarily for assessing various health risk factors. This study aims to examine the relationship between demographic, and behavioral variables that we have considered as risk factors and obesity in American youth in 2015 and 2019.

Methods: Data pertaining to obesity risk factors and BMI measurements were obtained from the YRBSS. Cross Tables and linear regression models were constructed and subsequent analyses were used to examine the correlation between risk factors and BMI. Two-sample t-tests were used to explore the difference between the 2015 and 2019 datasets.

Results: …

Food Supply Chains In Developed Countries And Livestock Production Systems, Alan Mcdermott

IGC Proceedings (1977-2023)

No abstract provided.

A Look Into User Privacy And Third-Party Applications In Facebook, Sovantharith Seng, Mahdi Nasrullah Al-Ameen, Matthew Wright

Computer Science Faculty and Staff Publications

Purpose

A huge amount of personal and sensitive data are shared on Facebook, which makes it a prime target for attackers. Adversaries can exploit third-party applications connected to a user’s Facebook profiles (i.e. Facebook apps) to gain access to this personal information. Users’ lack of knowledge and the varying privacy policies of these apps make them further vulnerable to information leakage. However, little has been done to identify mismatches between users’ perceptions and the privacy policies of Facebook apps. This paper aims to address this challenge in the work.

Design/methodology/approach

The authors conducted a lab study with 31 participants, where …

Urban Forests And Their Potential To Combat Food Insecurity: Analyzing Foods From Street Trees In New York City, Ny, Kristen Cooney

Environment and Sustainability Summer Fellows

There is growing recognition that urban forests have the potential to combat food insecurity via their edible parts, namely fruits, berries, and nuts. Many tree species commonly planted in urban spaces have edible parts that may fulfill the nutritional needs of city residents that are food insecure, but no one has analyzed the value of city street trees to understand this potential. I analyzed New York City’s street trees by each species and their edible parts to measure this potential.

Urban Forests And Their Potential To Combat Food Insecurity: Analyzing Street Trees In Baltimore, Md For Their Edibility, Victoria Bearden

Environment and Sustainability Summer Fellows

Food insecure environments, in which residents lack consistent access to nutritious food materials, can occur in urban settings. Literature on urban forests suggests that trees can provide a range of provisioning ecosystem services, including edible uses. We consider this to determine if street trees in Baltimore, Maryland have the potential to provide nutritious food materials to address food insecurity in Healthy Food Priority Areas (HFPA), designated by Johns Hopkins Center for a Livable Future.

The Fatty Acid Profile Of Traditional Home‐Made Kurut In Xinjiang Pastoral Regions, Yimamu Aibibula, Masaaki Hanada, M. Hirata, M. Renaguli, M. Goto

IGC Proceedings (1977-2023)

No abstract provided.

Biorenewable Energy: New Opportunities For Grassland Agriculture, Kenneth J. Moore, Steven L. Fales, Emily A. Heaton

IGC Proceedings (1977-2023)

No abstract provided.

Plasma Agriculture: Characterization Of Dbd Plasma Jet And Analysis Of Effects When Treated On Sweet Basil (Ocimum Basilicum), William Davis

Seton Hall University Dissertations and Theses (ETDs)

Plasma agriculture is an increasingly diverse field, where effects of nonthermal or cold plasma are measured by their influence on plant physiology and growth rate. Effects range from sterilization, germination, increased growth rate, cell metabolism, and so forth. This study aims to investigate the understanding of the generation of specific reactive oxygen and nitrogen species (RONS) from a nonthermal atmospheric DBD helium-based plasma jet and identify quantifiable effects that can directly translate to different applications related to plasma agriculture. Basil plants were separated into treated and control groups and grown hydroponically. The treated plants received a 30 second exposure treatment …