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Full-Text Articles in Physical Sciences and Mathematics

P3: What Determines The Shape Of A Cloud?, William Calabrase Jan 2017

P3: What Determines The Shape Of A Cloud?, William Calabrase

Undergraduate Research Posters 2017

Current climate models and weather forecasts suffer due to an uncertainty associated with the behavior of clouds, which directly impact the energy exchange between the earth and the Sun. This impact is determined in part by the shape of the clouds, thereby making the study of what affects cloud shape an area of interest. To characterize the shape of cumulus clouds we study the behavior of the cloud overlap ratio, or the ratio between the average cloud fraction and projected cloud cover. In this study, we used a high resolution computer model to 1) determine how the cloud overlap ratio …


P1: Salt Concentration And Ph Affect The Size Of Elastin-Like Polypeptide Nanoparticles, Bryce Noe, Ilona Tsuper, Daniel Terano, Richard Schmitt Jan 2017

P1: Salt Concentration And Ph Affect The Size Of Elastin-Like Polypeptide Nanoparticles, Bryce Noe, Ilona Tsuper, Daniel Terano, Richard Schmitt

Undergraduate Research Posters 2017

The transport of therapeutic drugs to specific tissues in the body can be accomplished using nanoparticles that encapsulate the drugs. Elastin-like polypeptides (ELP) is a class of materials that can reversibly form such nanoparticles in response to environmental cues. FLPs transition from soluble compounds to a phase separated system under particular solution conditions and have been used to produce temperature responsive surfactants. When these ELP surfactants are above their transition temperature, they spontaneously form energetically stable spherical micelles. When the temperature drops below the transition temperature, the micelles break apart and the ELP goes into solution. The size of these …


Evaluation Of Cetane Values Of Glycerolipids Extracted From Algae Scenedesmus Dimorphus Grown In Various Salinity Concentrations Using Gas Chromatography And Mass Spectrometry (Gc-Ms), Paul Lin, Chandana Mannem Jan 2017

Evaluation Of Cetane Values Of Glycerolipids Extracted From Algae Scenedesmus Dimorphus Grown In Various Salinity Concentrations Using Gas Chromatography And Mass Spectrometry (Gc-Ms), Paul Lin, Chandana Mannem

Undergraduate Research Posters 2017

Algae's ability to store lipids, renewability, and potentially safer for the environment has made it a promising alternative fuel source. An industry rating for a biofuel's potential is the cetane value, which is a measure of a fuel's quality related to various glycerolipid concentrations. Growing conditions will affect lipid profile in algae, thereby affecting the cetane value. This project will attempt to identify changes in the centane value of the algae Scenedesmus dimorphus grown in various salinity concentrations. Scenedesmus dimorphus is the algae chosen for this experiment because of its ability to rapidly grow under harsh conditions. In this experiment …


P2: Light Scattering Study Of The Size And Shape Of Mixed Elastin-Like Polypeptide Micelles, Ilona Tsuper, Daniel Terrano, Bryce Noe Jan 2017

P2: Light Scattering Study Of The Size And Shape Of Mixed Elastin-Like Polypeptide Micelles, Ilona Tsuper, Daniel Terrano, Bryce Noe

Undergraduate Research Posters 2017

Elastin-Like Polypeptides (ELP) can be used to form thermoreversible vehicles for drug delivery systems. The ELP nanoparticles are composed of three-armed star polypeptides. Each of the three arms extending from the negatively charged foldon domain include 20 repeats of the (GVGVP) amino acid sequence. In addition, linear constructs composed of 40 repeats of the same (GVGVP) sequence are introduced into the system. The mixed ELP polymer system is soluble at room temperature and becomes insoluble at the transition temperature (~ 50°C) forming micelles with the foldons on the exterior and linear constructs at the core. Above the transition, the size …


P1: Using Modified Dean Flow Designs To Increase Mixing Performance, Joshua Clark Jan 2017

P1: Using Modified Dean Flow Designs To Increase Mixing Performance, Joshua Clark

Undergraduate Research Posters 2017

We are using numerical solutions for the Navier-Stokes equations and the concentration - diffusion equation to model fluid flow and reactant distribution in serpentine type channels for micromixers/microreactors development. These mixers exploit centripetal forces on the fluid to induce cross-sectional fluid mixing, aka Dean flows. Various modifications are used to increase the mixing character of these crosssectional flows. We found that the performance of these mixers exceeds that of unmodified channels and we currently assess their performance relative to other state of the art methodologies used to induce mixing on the microscale.


Going Green: Experimental Adaptation Of Scenedesmus Dimorphus To Marine Conditions, Mohammed Khalil Jan 2017

Going Green: Experimental Adaptation Of Scenedesmus Dimorphus To Marine Conditions, Mohammed Khalil

Undergraduate Research Posters 2017

Algae has gained some interest as the need for alternative fuels becomes more pressing. Reliance on fossil fuels is causing our environment and economy harm, and is not sustainable moving forward. Lipid rich algae strains can be used in the production of biofuels, and provide an alternative fuel source. One challenge facing the prospect of algae as a fuel source is that lipid rich algae grows exclusively in freshwater. Considering the scarcity and cost to use freshwater for algae growth, interest has grown in the possibility of adapting lipid rich, freshwater algae to a seawater environment. Seawater can have up …


P2: Implementation Of Groove Based Designs For Engineering Fluid Flow In Micromixers, Tahir Butt Jan 2017

P2: Implementation Of Groove Based Designs For Engineering Fluid Flow In Micromixers, Tahir Butt

Undergraduate Research Posters 2017

Mixing on microscale is important for the development of miniaturized chemical reactors that use small quantities of reactants and allow better control over the reaction conditions and products. Nevertheless, achieving rapid mixing in this type of micro-reactors is challenging due to the lack of turbulence and slow diffusion on the microscale. In this work we implement micromixers designs based on surface groove/ridge patterns targeted at inducing cross-sectional flows that both extend the interface between the different reactants, as well as induce chaotic advection. We discuss the fabrication of these structures using soft-lithography in PDMS employing a mold and their optical …


Fabricating Non-Close Packed Colloidal Monolayers For Ion Irradiation Templates, Nandini Padaraju Jan 2017

Fabricating Non-Close Packed Colloidal Monolayers For Ion Irradiation Templates, Nandini Padaraju

Undergraduate Research Posters 2017

Due to their unique properties, anisotropic nanoparticles are desirable components for future applications yet there are few processes capable of fabricating nanoparticle impregnated coatings for the manufacturing environment. Our work seeks to develop new masking techniques for the production of the templated substrates that will induce ordered nanoparticle films. Specifically, we are fabricating non-close packed colloidal monolayers onto silicon substrates, which then serve as the template for ion irradiation. The first steps to creating this monolayer are obtaining a spin-coated poly(vinyl alcohol) (PVA) thin film of ~200 nm and a close-packed colloidal monolayer using a peltier heater. We achieved a …


The Relationship Between Observed And Perceived Measures Of Balance Stability, Lrenzo Bianco, John Demarco, Sarah Gualtier Jan 2016

The Relationship Between Observed And Perceived Measures Of Balance Stability, Lrenzo Bianco, John Demarco, Sarah Gualtier

Undergraduate Research Posters 2016

Introduction Injurious falls have risen significantly in the past decade, raising concerns about the efficacy of fall prevention programs. The purpose of this study was to analyze the correlation between perceived and observed balance measures used in a falls prevention program. Methods Subjects (S) were 70 (F), 59 (F), and 73(M). They were taught the Rate of Perceived Stability (RPS), a perceived measure of balance intensity and completed the Berg Balance Test (Berg), Timed up and Go (TUG), and Activities Specific Balance Confidence Scale (ABC). The Berg and TUG are observed measures and the ABC is a perceived measure. Last, …


Synthesis And Characterization Of Lectin Mimetics (Neo-Lectins), Czharena Kay Rama, Joshua Whited Jan 2016

Synthesis And Characterization Of Lectin Mimetics (Neo-Lectins), Czharena Kay Rama, Joshua Whited

Undergraduate Research Posters 2016

The cell surface expresses a variety of carbohydrates such as glycoproteins, proteoglycans and glycolipids. They play critical roles in pathological and physiological processes, including cell signaling, immune responses, pathogen-host interactions, tumor metastasis, and other cellular events. Due to its function and uses in cell communication, it is a curious subject of observation for scientific research. The molecular mechanism of carbohydrate recognition is still undetermined, and lectins, sugar binding proteins, are used to analyze the particular structures expressed on the cell surface. Lectins are normally found in plants and animals, and the isolation process of lectins is laborious, toxic, immunogenic and …


The Identification Of Anti-Cancer Molecular Targets Of Cox-2 Inhibitor Nimesulide, Yuridia Olivera Ortiz, Nethrie D. Idippily Jan 2016

The Identification Of Anti-Cancer Molecular Targets Of Cox-2 Inhibitor Nimesulide, Yuridia Olivera Ortiz, Nethrie D. Idippily

Undergraduate Research Posters 2016

Non-steroidal anti inflammatory drugs which were primarily used for the treatment inflammation and pain have also shown anti-cancer activity in many studies. The mechanism of action of NSAIDs in cancer may involve cyclooxygenase (COX) dependent or independent pathways. According to studies, COX-2 is overexpressed in several cancers such as prostate, breast, nonsmall-cell lung, colon, and pancreas. Nimesulide is an NSAID with COX-2 inhibitory activity and investigations show that it could induce apoptosis in cancer. Previously, a library of compounds was synthesized using Nimesulide as a lead compound. However, they displayed different molecular targets: tubulin and heat shock protein 27 (HSP27). …


The Use Of Ipad Pros As An Assistive Device In Occupational Therapy, Osorio Lana Jan 2016

The Use Of Ipad Pros As An Assistive Device In Occupational Therapy, Osorio Lana

Undergraduate Research Posters 2016

RESEARCH QUESTION: How can IPADS be used as an assistive devices for children and adults with disabilities? A literature review was conducted using the keywords, in order to find articles about using iPads as a therapeutic device. As a result it was concluded that iPads due to its versatility and popularity has made great progress as a therapeutic tool. Apps recommended as having a therapeutic purpose were also purchased and installed. The iPads will be used as a learning device amongst the Health Science Programs at Cleveland State University. KEYWORDS: iPad, assistive technology, occupational therapy, tablet, allied health, assistive therapeutic …


Variation Of Bone Microarchitecture Within And Among Contemporaneous Species Of Fossil Horses: Feasibility, Emily A. Edwards Jan 2016

Variation Of Bone Microarchitecture Within And Among Contemporaneous Species Of Fossil Horses: Feasibility, Emily A. Edwards

Undergraduate Research Posters 2016

Mesohippus, Miohippus, and Merychippus are extinct horse species that date back fifteen to thirty million years ago, which spanned over three time periods in North America. Each of the horses habituated different terrains from wet to dry. The third metacarpal became the prominent one-toe of horse evolution and is the specimen of this study. The aim is to determine if reorientation, segmentation, correcting size differences, and isolation are feasible. Horse fossils are extensive, documented, and are used as an analogous fossil lineage to humans for this study. Imaging of the third metacarpal was accomplished by micro-CT scanning with a focus …


The Effects Of Superior Laryngeal Nerve Lesion On Swallowing Kinematics And Airway Protection, Saja Abid, Rebecca Z. German Jan 2016

The Effects Of Superior Laryngeal Nerve Lesion On Swallowing Kinematics And Airway Protection, Saja Abid, Rebecca Z. German

Undergraduate Research Posters 2016

The superior laryngeal nerve (SLN) carries sensory information from the mucosal tissues of the pharynx superior to the vocal folds, and carries motor signals to the cricothyroid muscles. It also provides partial innervation to the thyroarytenoid and posterior cricoarytenoid muscles. Finally, the SLN initiates the swallow. When a food or liquid bolus is swallowed, the epiglottis and the false and true vocal folds work together to seal off the airway and allow the bolus to pass through the esophagus. If the SLN is damaged, it usually leads to dysphasia in which food or liquid enters the airway. We hypothesized that …


Dialects Accents And Intelligence: A Study On Dialectal Perceptions, Taylor Moore Jan 2016

Dialects Accents And Intelligence: A Study On Dialectal Perceptions, Taylor Moore

Undergraduate Research Posters 2016

Speech language pathologists are given the tools to help clients with a wide range of pathologies. Issues relating to speech, hearing, swallowing, etc can all benefit from a Speech language pathologist's insight. One area that can be difficult is dialect. People across America speak with many different dialects and speech language pathologists are taught to recognize these differences but not correct them. Dialect showcases culture but does not define intelligence. Dialects like African American Venacular English are rule governed systems of communication (Carter, 2012). The research done on AAVE is seemingly endless (Baugh, 1983; Pearson,2013; Robinson,2011; Carter 2010; Bronstein,1970......) and …


Sequential And Dynamic Rna:Rna Base-Pairing Interactions Between U6atac And U12 Snrnas Predicted To Form Helix 1a And Helix 1b, Maitri Patel, Jagjit Singh Jan 2016

Sequential And Dynamic Rna:Rna Base-Pairing Interactions Between U6atac And U12 Snrnas Predicted To Form Helix 1a And Helix 1b, Maitri Patel, Jagjit Singh

Undergraduate Research Posters 2016

In eukaryotes, pre-mRNA splicing is important step for gene expression. Splicing is a two-step process which is carried out by a multi-megadalton molecular weight ribonucleoprotein (RNP) machinery called spliceosome. Spliceosome converts pre- mRNA to mRNA by removing non-coding sequence (introns) and splice together coding sequence (exons). Mammalian pre-mRNA are spliced by two different class of spliceosomes which are known as U2- and U12- dependent spliceosomes. U12 dependent spliceosome is composed of five small nuclear RNAs (snRNA). As compared to U2-dependent spliceosome, there is very less known about the catalytic process of U12-dependent splicing. U6atac and U12 snRNA are central to …


Defining An Enriched Environment For Pre-Ambulation Training Using A Multi-Directional, Over-Ground Harness System For Young Children With Down Syndrome, Lauren Schuck, Lisa Haecker Jan 2016

Defining An Enriched Environment For Pre-Ambulation Training Using A Multi-Directional, Over-Ground Harness System For Young Children With Down Syndrome, Lauren Schuck, Lisa Haecker

Undergraduate Research Posters 2016

This theoretical literature review aims to define the components of an enriched environment (EE) while using a multi-directional, over-ground harness system (MOH), for pre-ambulatory children with Down syndrome (DS). While using an EE has not been clearly defined within humans, children with DS may benefit from this combination of interventions to optimize developmental outcomes. Of the 15 articles critiqued, 6 were found to be most relevant to help define an EE with specific activities when using a MOH for pre-ambulation training. As a part of defining an EE within a MOH, activities will be suggested that stimulate the four components …


Effect Of Calorie Restriction On Circadian Rhythms Of Glycolytic Enzymes In Mice, Enas A. Muhammad, Artem Astafev, Kuldeep Makwana Jan 2016

Effect Of Calorie Restriction On Circadian Rhythms Of Glycolytic Enzymes In Mice, Enas A. Muhammad, Artem Astafev, Kuldeep Makwana

Undergraduate Research Posters 2016

Multicellular and unicellular organisms have all proven to exhibit circadian rhythms which persist over approximately 24 hours. This internal time keeping system is responsible for regulating the body's biological functions. It has been known that calorie restriction effects circadian rhythms by causing a response in clock gene expression. These clock genes react to food intake and become either upregulated or downregulated accordingly. With glycolysis being a biological pathway that occurs in most organisms, measuring glycolytic gene expression in the liver tissue of young male mice becomes of interest. More specifically, hexokinase, PFK-1, and pyruvate kinase are the enzymes of interest. …


Effect Of P38 Kinase And Cell Cycle Position On The Expression Of The Pro-Apoptotic Bcl2 Family Member Puma In Skeletal Myoblasts, Victoria Bensimon, Briana Boslett Jan 2016

Effect Of P38 Kinase And Cell Cycle Position On The Expression Of The Pro-Apoptotic Bcl2 Family Member Puma In Skeletal Myoblasts, Victoria Bensimon, Briana Boslett

Undergraduate Research Posters 2016

Skeletal muscle regeneration relies on myoblast stem cell differentiation and is a crucial response to muscle injury caused by trauma and numerous diseases. In skeletal myoblasts, cell death and differentiation are mutually exclusive biological endpoints that are both induced by culture in differentiation media. MyoD, the master muscle- specific transcription factor, is well-known to regulate the expression of muscle specific genes such as myogenin and the ensuing differentiation. However, we have previously reported that MyoD also plays a critical role in the expression of PUMA and apoptosis, rather than myogenin and differentiation, in a subset of myoblasts, thus diminishing the …


Effect Of Hypoxic Conditions On Skeletal Myoblasts, Abdo Boumitri, Shuai Zhao Jan 2016

Effect Of Hypoxic Conditions On Skeletal Myoblasts, Abdo Boumitri, Shuai Zhao

Undergraduate Research Posters 2016

Ischemic injury in skeletal muscle caused by hypoxic (low oxygen) conditions occurs in response to vascular and musculoskeletal traumas, diseases and following reconstructive surgeries. Thus, a thorough understanding of the effect of hypoxia on skeletal myoblasts is warranted to identify potential therapeutic targets. We have determined that treatment with cobalt chloride (to mimic hypoxic conditions) leads to decreased numbers of viable (attached) skeletal myoblast over time and an increase in the percentage of detached myoblasts. To determine the contribution of apoptosis (cell death) to this increase in detached myoblasts, we assessed PARP cleavage, a well- accepted marker for apoptosis. Consistent …


Understanding The Expression And Trafficking Of Plasmodium Falciparum Maurer’S Clefts Proteins, Sophia Degeorgia, Katharine Komisarz, Ashka Patel, Raghavendra Yadavalli Jan 2016

Understanding The Expression And Trafficking Of Plasmodium Falciparum Maurer’S Clefts Proteins, Sophia Degeorgia, Katharine Komisarz, Ashka Patel, Raghavendra Yadavalli

Undergraduate Research Posters 2016

Malaria is a potentially fatal disease caused by parasites in the genus Plasmodium. Of the five species that cause human malaria, P. falciparum causes an estimated 1 million deaths annually, particularly in young children in sub-Saharan Africa. Plasmodium falciparum is most commonly found in tropical and subtropical regions of the world. After invasion into human red blood cells, parasite induced transport structures known as Maurer's clefts, are formed within red cells. In previous studies, two Maurer's clefts proteins were identified; an approximately 130 kDa peripheral membrane protein and a 20-kDa integral membrane protein. Immunofluorescence and confocal microscopy identified both proteins …


Elimination Of Acoustic Noise In Stm Analysis Of Polymer Crystallization On Au (111), Mark Bowling, William Myers Jan 2016

Elimination Of Acoustic Noise In Stm Analysis Of Polymer Crystallization On Au (111), Mark Bowling, William Myers

Undergraduate Research Posters 2016

Organic molecules offer a potentially cheap and environmentally friendly alternative to traditional silicon based electronics. The main limitation is that they are not as conductive as their inorganic counter parts. By crystalizing organic molecules, it is possible to increase the conductivity so that they can be more competitive with silicon electronics. This project examines the crystallization of polymers through selfassembly on the Au(111) surface reconstruction. The success of the crystallization is characterized with scanning tunneling microscopy (STM). In order to achieve high resolution STM images, we examined acoustic isolation by enclosing the microscope within a rubber-coated box, which was not …


Elimination Of Acoustical Noise For Stm Examination Of Pentacene Crystallization On Si (001), William Myers, Mark Bowling Jan 2016

Elimination Of Acoustical Noise For Stm Examination Of Pentacene Crystallization On Si (001), William Myers, Mark Bowling

Undergraduate Research Posters 2016

Organic electronics are used in traditional solar cells and also in flexible electronics. Unfortunately, the conductivities of organic semiconductors are significantly lower than their inorganic counterparts. This project examines crystallization by directed selfassembly of the organic molecules via a surface reconstruction as a method to increase conductivity. The crystallization is characterized by Scanning Tunneling Microscopy (STM). In order to achieve optimal STM images, this work examined: (1) noise isolation, (2) etching sharp STM tips and (3) achieving reconstructed Si surface. The STM is housed in a glovebox to keep the surface reconstructions and organic molecules from degrading. However, acoustical noise …


Which Clouds Are Important: Variation Of Cloud Size Distribution Functions In Large Eddy Simulations, Dorothy Pharis, Nicholas Barron Jan 2016

Which Clouds Are Important: Variation Of Cloud Size Distribution Functions In Large Eddy Simulations, Dorothy Pharis, Nicholas Barron

Undergraduate Research Posters 2016

Accurately measuring and modeling clouds is an important factor in improving weather and climate prediction. One way of measuring the most important cloud size in a cloud field is a cloud size distribution (CSD) function, or the number of clouds per cloud size within the field. The information from a cloud size distribution can then be used to determine which cloud sizes contribute the most to cloud cover. This research focuses on creating and comparing cloud size distributions for a variety of cumulus cloud fields generated by Large Eddy Simulations (LES), a high resolution computer model. Our work found that …


Cloud Overlap Of Cumuliform Clouds In The Shallow Boundary Layer, William Calabrase Jan 2016

Cloud Overlap Of Cumuliform Clouds In The Shallow Boundary Layer, William Calabrase

Undergraduate Research Posters 2016

Cloud albedo, or the proportion of sunlight reflected by a cloud, has a significant impact on the Earth's radiation budget and is strongly influenced by cloud shape. It is a major source of uncertainty in climate modeling. To characterize the shape of shallow cumulus clouds we study the behavior of the cloud overlap ratio, the ratio between the average cloud fraction and projected cloud cover. In this study, we use a high resolution computer model (LES) to 1) determine how the cloud overlap ratio of a cloud field is related to the overlap of individual clouds, and 2) to study …


Biostatistical Analysis On The Effects Of The Circadian Clock & Glucose Genes On Different Feeding Regimens, Rana Faraj, Nikkhil Velingkaar Jan 2016

Biostatistical Analysis On The Effects Of The Circadian Clock & Glucose Genes On Different Feeding Regimens, Rana Faraj, Nikkhil Velingkaar

Undergraduate Research Posters 2016

Circadian clocks are internal biological systems that control many physiological processes. The circadian clock is considered to be the master regulator of metabolism in mammals. The molecular metabolism is not very well known. The circadian clock regulated expression in metabolic enzymes and in turn, diet also regulates circadian clock on a molecular level. To better understand the interaction between circadian clock and metabolism, mice were subjected to different feeding regimens and metabolic tissue, such as liver and skeletal muscles, have been collected across the circadian cycle. Expression of genes have been analyzed in the liver using RT-QPCR. Large set of …


How Big Is A Cloud: A Statistical Analysis Of Cloud Size Distributions Derived From Large Eddy Simulations, Dorothy Pharis, Nicholas Barron Jan 2016

How Big Is A Cloud: A Statistical Analysis Of Cloud Size Distributions Derived From Large Eddy Simulations, Dorothy Pharis, Nicholas Barron

Undergraduate Research Posters 2016

To accurately represent cumulous clouds in climate and weather models, it is important to understand how large clouds, in certain cloud fields, are. These fields can be described by a cloud size distribution (CSD), the number of clouds of a certain defined size. This study utilized data from a Large Eddy Simulation (LES), a high resolution numerical model describing the atmosphere, to explore what defines the cloud size distribution. First, we have developed a toolkit to illustrate the cloud size distribution by using the slope and deriving an estimate for the scale break. Second, we performed a statistical analysis of …


Synchronization Of Cell Growth Makes Capture Of G2 Phase Cells Possible, Maryam Assar, Noopur Joshi Jan 2016

Synchronization Of Cell Growth Makes Capture Of G2 Phase Cells Possible, Maryam Assar, Noopur Joshi

Undergraduate Research Posters 2016

During meiosis, homologous chromosomes, one set maternal and the other set paternal, pair with one another. Pairing is a prerequisite for crossing over, where allelic regions on homologs break and recombine with the corresponding homolog. This crossing over results in recombinant chromosomes that in turn increase genetic diversity. What causes the homologs to pair at specific sites is unknown. We are investigating whether specific DNA sequences are involved in pairing. Our first step to identify pairing sites involves mitotic cells of budding yeast in order to isolate pairing regions in sister chromatids. Mitotic cells are used instead of meiotic cells …


Optimizing Dynamic Light Scattering For The Analysis Of Anisotropic Nanoparticles In Solution, Tony Dobrila Jan 2016

Optimizing Dynamic Light Scattering For The Analysis Of Anisotropic Nanoparticles In Solution, Tony Dobrila

Undergraduate Research Posters 2016

To further understanding of light scattering on solution of anisotropic hard-to-image soft particles such as elastin-like polypeptide micelles the light scattering characterization of anisotropic easy-to-image inorganic gold nanoparticles was undertaken. We used Depolarized Dynamic Light Scattering (DDLS) and Scanning Electron Microscopy (SEM) to study commercial gold nanoparticles: nanospheres, nanorods with aspect-ratio=3, and nanorods with aspect ratio=7. According to SEM particles appeared to be larger than manufacturer specs, namely 2R=18.9±1.3nm, (26.1±4.1)x(65.5±9.5)nm, and (16.3±2.2)x(103.6±16.7)nm, respectively. DDLS on nanospheres showed no rotational diffusion (VH) signal, q dependence of decay rate consistent with that of spherical particles, no concentration dependence of translational diffusion coef- …


How Dry Is The Lower Atmosphere: Finding Relations Between Various Moments In The Atmospheric Boundary Layer, Vladimir Sworski Jan 2016

How Dry Is The Lower Atmosphere: Finding Relations Between Various Moments In The Atmospheric Boundary Layer, Vladimir Sworski

Undergraduate Research Posters 2016

The Atmospheric Boundary Layer (ABL), consisting of the bottom few kilometers of the troposphere, is a highly turbulent region with strong mixing of moisture and winds. This region's activity is driven by thermals, which rise to the top of the boundary layer and thicken it through entrainment of warm air from above. To better predict the behavior of the ABL, a good understanding of the distribution of heat, moisture and momentum is important. In this study, we use a high resolution computer model (LES) to determine those distributions. We were able to reproduce observations when using a temporal averaging that …