Recursos de colección

The KnowledgeBank at OSU (76.400 recursos)

Knowledge Bank contains collections of presentations, publications and reports related to Ohio State University.

22nd Denman Undergraduate Research Forum (2017)

Mostrando recursos 1 - 20 de 42

  1. Measurements of intrinsic magnetism in multilayer graphene using cantilever magnetometry

    Melendez, Alex
    Graphene is widely regarded as one of the most promising emergent materials. Unique characteristics such as quasi-relativistic charge carriers cause graphene to be of great interest for fundamental physics as well as for engineering applications. Physical properties such as electrical and thermal conductivity have been extensively studied, but direct measurements of graphene's intrinsic magnetism remains elusive due to its relatively weak interactions. The intrinsic magnetism, quantified as magnetic susceptibility, must be understood if graphene is to be optimally integrated with future technologies. Our purpose here is to obtain sensitive measurements of the susceptibility using the method of cantilever magnetometry, wherein...

  2. Measurements of intrinsic magnetism in multilayer graphene using cantilever magnetometry

    Melendez, Alex
    Graphene is widely regarded as one of the most promising emergent materials. Unique characteristics such as quasi-relativistic charge carriers cause graphene to be of great interest for fundamental physics as well as for engineering applications. Physical properties such as electrical and thermal conductivity have been extensively studied, but direct measurements of graphene's intrinsic magnetism remains elusive due to its relatively weak interactions. The intrinsic magnetism, quantified as magnetic susceptibility, must be understood if graphene is to be optimally integrated with future technologies. Our purpose here is to obtain sensitive measurements of the susceptibility using the method of cantilever magnetometry, wherein...

  3. Positive and Negative Regulatory Elements in the HIV-1 5'UTR Control Specific Recognition by Gag

    Reyes, Joshua-Paolo C.; Olson, Erik D.; Musier-Forsyth, Karin
    The 5ʹ untranslated region (5ʹUTR) of the human immunodeficiency virus type 1 (HIV-1) genomic RNA (gRNA) contains a structured RNA element (termed Psi) that is specifically recognized by the HIV-1 Gag polyprotein, ensuring that two strands of gRNA are packaged into newly assembled virions. However, the mechanism by which Gag recognizes gRNA over other cellular RNAs and spliced viral RNAs is not well understood. A recent study suggested that a negative regulatory element upstream of Psi reduces high-affinity Gag binding, and a positive regulatory element downstream of Psi counteracts the upstream element and restores high-affinity binding. The aim of this...

  4. Positive and Negative Regulatory Elements in the HIV-1 5'UTR Control Specific Recognition by Gag

    Reyes, Joshua-Paolo C.; Olson, Erik D.; Musier-Forsyth, Karin
    The 5ʹ untranslated region (5ʹUTR) of the human immunodeficiency virus type 1 (HIV-1) genomic RNA (gRNA) contains a structured RNA element (termed Psi) that is specifically recognized by the HIV-1 Gag polyprotein, ensuring that two strands of gRNA are packaged into newly assembled virions. However, the mechanism by which Gag recognizes gRNA over other cellular RNAs and spliced viral RNAs is not well understood. A recent study suggested that a negative regulatory element upstream of Psi reduces high-affinity Gag binding, and a positive regulatory element downstream of Psi counteracts the upstream element and restores high-affinity binding. The aim of this...

  5. Attention and Sociability in Preschoolers With and Without Developmental Disabilities

    DiBlasio, Christina
    Children with developmental disabilities (DD) often have sociability and/or attention deficits that may negatively impact their ability to learn and develop at the same pace as their typically developing (TD) peers. The early childhood years are a key time for learning important pre-academic and social skills. Socialization and attention are essential for learning in a preschool classroom. The structure of classroom activities should promote opportunities for social interactions and on-task behavior for children with and without attention and sociability deficits in order to foster growth and learning. However, no previous research explores the influence of classroom structure on the attention...

  6. Attention and Sociability in Preschoolers With and Without Developmental Disabilities

    DiBlasio, Christina
    Children with developmental disabilities (DD) often have sociability and/or attention deficits that may negatively impact their ability to learn and develop at the same pace as their typically developing (TD) peers. The early childhood years are a key time for learning important pre-academic and social skills. Socialization and attention are essential for learning in a preschool classroom. The structure of classroom activities should promote opportunities for social interactions and on-task behavior for children with and without attention and sociability deficits in order to foster growth and learning. However, no previous research explores the influence of classroom structure on the attention...

  7. Investigating the potential for use of the endangered species, running buffalo clover (Trifolium stoloniferum) on reclaimed mine-land.

    Kubesch, Jonathan
    Running buffalo clover (RBC) is native to Ohio, however, loss of prairie habitat has resulted in it becoming a federal endangered species. Presumed extinct around 1940, researchers rediscovered small populations in the mid-1980s along the Ohio River corridor. Though the U.S. Fish and Wildlife Service implemented management plans and state agencies attempted reintroductions, the species remains in a perilous state in the wild. The objective of this study is to determine the tolerance of RBC to acidic and sulfuric/ferrous soil. The hypothesis is that a commercial or private utility may encourage larger reintroductions and invigorate new interest in a deserving,...

  8. Investigating the potential for use of the endangered species, running buffalo clover (Trifolium stoloniferum) on reclaimed mine-land.

    Kubesch, Jonathan
    Running buffalo clover (RBC) is native to Ohio, however, loss of prairie habitat has resulted in it becoming a federal endangered species. Presumed extinct around 1940, researchers rediscovered small populations in the mid-1980s along the Ohio River corridor. Though the U.S. Fish and Wildlife Service implemented management plans and state agencies attempted reintroductions, the species remains in a perilous state in the wild. The objective of this study is to determine the tolerance of RBC to acidic and sulfuric/ferrous soil. The hypothesis is that a commercial or private utility may encourage larger reintroductions and invigorate new interest in a deserving,...

  9. Modeling Student Understanding of Period, Frequency, and Angular Frequency

    Young, Nicholas
    Periodic behavior is a fundamental phenomenon in many physical and biological systems; therefore, it is critical that students understand the concepts and relationships that underlie such behavior. In this study, we used the context of the behavior of a simple harmonic oscillator to investigate students’ ability to determine the period, frequency, and angular frequency from various mathematical and graphical representations by administering a 36-item test to 57 students in an introductory-calculus-based physics course. Using the results of this test, we found that students could be clearly classified into one of three groups, according to the types of questions they mastered....

  10. Modeling Student Understanding of Period, Frequency, and Angular Frequency

    Young, Nicholas
    Periodic behavior is a fundamental phenomenon in many physical and biological systems; therefore, it is critical that students understand the concepts and relationships that underlie such behavior. In this study, we used the context of the behavior of a simple harmonic oscillator to investigate students’ ability to determine the period, frequency, and angular frequency from various mathematical and graphical representations by administering a 36-item test to 57 students in an introductory-calculus-based physics course. Using the results of this test, we found that students could be clearly classified into one of three groups, according to the types of questions they mastered....

  11. Does an Individualist Mindset Lead to More Charitable Donations?

    Kuzma, Danielle
    Despite the growing amount of research on charitable giving, researchers still do not agree on why people donate. Do they donate for selfish incentives, such as to feel good about themselves, or for purely altruistic reasons associated with improving the world? Literature has discussed the theory of impure altruism, that is to say, a donor’s intentions for giving cannot be purely altruistic because of the “warm-glow” they experience. This warm-glow is an individualist reward for giving, rather than the traditional thoughts that giving is done simply to help those in need. The goal of this study is to understand whether...

  12. Does an Individualist Mindset Lead to More Charitable Donations?

    Kuzma, Danielle
    Despite the growing amount of research on charitable giving, researchers still do not agree on why people donate. Do they donate for selfish incentives, such as to feel good about themselves, or for purely altruistic reasons associated with improving the world? Literature has discussed the theory of impure altruism, that is to say, a donor’s intentions for giving cannot be purely altruistic because of the “warm-glow” they experience. This warm-glow is an individualist reward for giving, rather than the traditional thoughts that giving is done simply to help those in need. The goal of this study is to understand whether...

  13. The Connection Between Employee Health and its Affect on the Workplace

    Bacha, Michael F.
    Living a healthy lifestyle can affect your personal relationships, mental state, and overall wellbeing. Companies are beginning to take note of this impact and implementing policies and programs to facilitate healthy living styles for their employees. Whether it’s putting a workout facility in the office, offering healthier food options in the cafeteria, or outfitting desks with “stand-up” capabilities, many businesses are trying to improve their employee’s health. Fortune magazine estimates that currently only around 7% of US companies have a comprehensive promotion plan to encourage employees to live a healthier lifestyle. Should this percentage be increased? The purpose of this...

  14. The Connection Between Employee Health and its Affect on the Workplace

    Bacha, Michael F.
    Living a healthy lifestyle can affect your personal relationships, mental state, and overall wellbeing. Companies are beginning to take note of this impact and implementing policies and programs to facilitate healthy living styles for their employees. Whether it’s putting a workout facility in the office, offering healthier food options in the cafeteria, or outfitting desks with “stand-up” capabilities, many businesses are trying to improve their employee’s health. Fortune magazine estimates that currently only around 7% of US companies have a comprehensive promotion plan to encourage employees to live a healthier lifestyle. Should this percentage be increased? The purpose of this...

  15. The impact of corporate social responsibility on stock returns: Evidence from the U.S. stock market

    Zhang, Yilin
    Corporate social responsibility, often abbreviated “CSR,” is a company’s practices and initiatives to take responsibility for the benefit of society. The purpose of this study is to examine the impact of corporate social responsibility on the stock returns of U.S. publicly-traded companies that constitute S&P Composite 1500 Index, based on the stock performances during 2000-2014. Following a disaggregate measure as well as conducting cross-sectional one-year lagged regression analyses, the study assesses the effect of three corporate social responsibility indicators from the KLD STATS database, including: (1) Environmental Performance; (2) Corporate Governance Performance; and (3) Social Performance indicators. All three variables...

  16. The impact of corporate social responsibility on stock returns: Evidence from the U.S. stock market

    Zhang, Yilin
    Corporate social responsibility, often abbreviated “CSR,” is a company’s practices and initiatives to take responsibility for the benefit of society. The purpose of this study is to examine the impact of corporate social responsibility on the stock returns of U.S. publicly-traded companies that constitute S&P Composite 1500 Index, based on the stock performances during 2000-2014. Following a disaggregate measure as well as conducting cross-sectional one-year lagged regression analyses, the study assesses the effect of three corporate social responsibility indicators from the KLD STATS database, including: (1) Environmental Performance; (2) Corporate Governance Performance; and (3) Social Performance indicators. All three variables...

  17. Oxygen-Sensitive Electrosprayed Core-Shell Polymer Microparticles for Biological Applications

    DiRando, Nicole
    The development of luminescent oxygen-sensitive core-shell polymer microparticles can provide beneficial advantages to biological applications. The objective of this research is to create optimal oxygen sensitive microparticles in an injectable form to detect hypoxic regions within tissue indicative of areas of low oxygen concentration associated with tumor recurrence that often resists traditional cancer treatments. Since oxygen quenches a luminescent output from oxygen-sensitive molecules, decreases in oxygen concentration in biological tissue can be observed by an increased fluorescent output; hypoxic regions can be correlated with the development of small tumors in tissue. These luminescent oxygen-sensitive molecules typically require violet or blue...

  18. Oxygen-Sensitive Electrosprayed Core-Shell Polymer Microparticles for Biological Applications

    DiRando, Nicole
    The development of luminescent oxygen-sensitive core-shell polymer microparticles can provide beneficial advantages to biological applications. The objective of this research is to create optimal oxygen sensitive microparticles in an injectable form to detect hypoxic regions within tissue indicative of areas of low oxygen concentration associated with tumor recurrence that often resists traditional cancer treatments. Since oxygen quenches a luminescent output from oxygen-sensitive molecules, decreases in oxygen concentration in biological tissue can be observed by an increased fluorescent output; hypoxic regions can be correlated with the development of small tumors in tissue. These luminescent oxygen-sensitive molecules typically require violet or blue...

  19. Understanding the role of PAK7 mutations in melanoma

    Vroom, Dennis; LaPak, Kyle; Gross, Michael; Garg, Ayush; Song, Jonathan
    A five year embargo was granted for this item.

  20. Understanding the role of PAK7 mutations in melanoma

    Vroom, Dennis; LaPak, Kyle; Gross, Michael; Garg, Ayush; Song, Jonathan
    A five year embargo was granted for this item.

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.