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2013

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What Are The Long-Term Consequences Of Peer Victimization? Changes In Biological Functioning And Its Effects On Psychological And Physical Health, Priya Anapurna Iyer Jan 2013

What Are The Long-Term Consequences Of Peer Victimization? Changes In Biological Functioning And Its Effects On Psychological And Physical Health, Priya Anapurna Iyer

Psychology Dissertations - Archive

Prior research has documented long-term psychological problems (e.g. emotional distress, anxiety, and depression; Kochenderfer-Ladd & Wardrop, 2001) experienced as a result of being bullied as an adolescent. Although being a recipient of peer victimization has been related to psychological health, limited research has looked at the association between peer victimization and physical health problems. Even fewer studies have investigated the relationship between being bullied and health outcomes over time. This dissertation examined whether peer victimization in early adolescence lead to changes in neuroendocrine functioning (as assessed by cortisol) and physical health outcomes several years later. Adolescents and their parents (N …

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Outcome And State Transition Modeling For Adaptive Interdisciplinary Pain Management, Aera Kim Leboulluec Jan 2013

Outcome And State Transition Modeling For Adaptive Interdisciplinary Pain Management, Aera Kim Leboulluec

Industrial, Manufacturing, and Systems Engineering Dissertations - Archive

Pain management is a major global health problem. The World Health Organization estimates that, globally, 1 in 5 adults suffer from chronic pain and in the United States alone, chronic pain affects nearly 100 million adults resulting in an estimated annual cost of $560 to $635 billion. The University of Texas at Arlington and the Eugene McDermott Center for Pain Management at the University of Texas Southwestern Medical Center at Dallas (The Center) are collaborating to seek adaptive treatment strategies for interdisciplinary pain management in a two-stage program. Interdisciplinary pain management combines multiple disciplines of professionals to understand the biological …

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Nanogap Break Junctions And Solid-State Micropores As Electronic Biosensors, Azhar Ilyas Jan 2013

Nanogap Break Junctions And Solid-State Micropores As Electronic Biosensors, Azhar Ilyas

Electrical Engineering Dissertations - Archive

Cancer has been the top ranked fatal disease for the last several decades. Most of the cancers remain silent at its earlier stage and are usually diagnosed at advanced and incurable phase. Early detection of cancer can have immediate and far reaching impact on better prognosis of cancer patients. Diseases are initially expressed at molecular and cellular scale and identification of these deadly diseases at such small scales would be a great step toward early detection. The study of biological molecules and diseased cells require efficient fabrication techniques to develop sensing devices with molecular size entrapment. Bio-nanotechnology and BioMEMs promise …

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A Low-Noise, Low-Power Cmos Amperometric Circuit For Glucose Sensing, Niranjan Karandikar Jan 2013

A Low-Noise, Low-Power Cmos Amperometric Circuit For Glucose Sensing, Niranjan Karandikar

Electrical Engineering Dissertations - Archive

Diabetes is disorder associated with an insufficiency of insulin secretion. Large number of people around the world suffers from this disorder which can result into damages to eyes, kidneys, nerves and even death. One of the most common methods to detect the diabetes is to monitor the levels of glucose is the blood stream. Other biological fluids like tear fluid can also be used to detect levels of glucose. With emergence of MEMS technology several biosensors are developed, less invasive or non-invasive, which can detect these glucose levels from blood or tear. Central idea behind the developments of these biosensors …

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Impacts Of Anthropogenic Disturbances And Drought On Breeding Bird Abundance And Diversity In The Rolling Plains Ecoregion Of Texas, Natalie Ellen Hubbard Jan 2013

Impacts Of Anthropogenic Disturbances And Drought On Breeding Bird Abundance And Diversity In The Rolling Plains Ecoregion Of Texas, Natalie Ellen Hubbard

Biology Dissertations - Archive

Bird species, especially grassland species have undergone widespread decline in arid grasslands due to anthropogenic disturbance such as different land use including cattle grazing and agriculture and addition of physical structures such as buildings, roads and fences which can negatively impact both animals and native vegetation. The objective of this research was to determine the impacts of anthropogenic disturbance (i.e., presence of oil pump jacks and cattle grazing) and drought on breeding bird community dynamics in the Rolling Plains Ecoregion of Texas. The study involved four sites encompassing different land uses including a natural-non-cattle grazed, cattle-grazed, oil field pump jacks …

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Ruthenium(Ii) Polypyridyl Complexes As Potential Anticancer Drugs: Synthesis, Characterization, Cell Permeability And Localization, Yanling Chen Jan 2013

Ruthenium(Ii) Polypyridyl Complexes As Potential Anticancer Drugs: Synthesis, Characterization, Cell Permeability And Localization, Yanling Chen

Chemistry & Biochemistry Theses - Archive

Research on biological activities of ruthenium polypyridyl complexes (RPCs) continues to attract interest as these complexes have shown promising anticancer activity both in vitro and in vivo.¹⁻³ The mononuclear RPC, [(phen)₂Ru(tatpp)]²⁺ (MP) and related dinuclear complex [(phen)₂Ru(tatpp)Ru(phen)₂]⁴⁺ (P) have been shown to both intercalate with DNA and shown potentiated DNA cleavage under anaerobic and reducing conditions⁴⁻⁵, as well as shown good selectivity and cytotoxicity towards malignant cell lines in vitro and tumors in vivo.⁵ Both complexes contain the redox-active tatpp ligand which is thought to be an essential component for the observed biological activities. This thesis is focused on developing …

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Beliefs In Medications And Treatment Complexity As Predictors Of Medication Adherence Among Adults 18-65 Years Old With Inflammatory Bowel Disease, Donna Bacchus Jan 2013

Beliefs In Medications And Treatment Complexity As Predictors Of Medication Adherence Among Adults 18-65 Years Old With Inflammatory Bowel Disease, Donna Bacchus

Nursing Dissertations - Archive

Low adherence to medications in patients with inflammatory bowel disease (IBD) results in relapses and subsequently increased healthcare costs, poor quality of life, and increased comorbidities. In this correlational study, treatment complexity and beliefs in medications were tested to determine if they are predictors of medication adherence. Through convenience sampling, participants were recruited through face book, IBD organizations, and foundation websites (n = 369 final sample size). Females comprised the overwhelming majority (81.8%) of the sample. Using the Morisky Medication Adherence Scale, approximately 56% were classified as nonadherent and 44% as adherent. Beliefs in medications were measured by four subscales: …

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Nematodes With Three Genders: Models For The Evolution Of Mating Systems, Parasitism And Aging, Jyotiska Chaudhuri Jan 2013

Nematodes With Three Genders: Models For The Evolution Of Mating Systems, Parasitism And Aging, Jyotiska Chaudhuri

Biology Dissertations - Archive

All living organisms reproduce and age. These are the two basic facets of life, but in many aspects poorly understood. The majority of the species are male/female. The proportion of genders in population can vary significantly among animals and plants, but the mechanisms and evolutionary reasons for such variation are poorly understood. In some species of nematode (roundworm) parasites, for example, only female progeny is generated after a cross between a male and female. To understand how gender-ratio distortion happens and how it evolved, we are using a non-parasitic nematode that can be cultured in the laboratory, but that is …

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Saponins As Agents Preventing Infection Caused By Waterborne Pathogens, Alisa Moric Johnson Jan 2013

Saponins As Agents Preventing Infection Caused By Waterborne Pathogens, Alisa Moric Johnson

Biology Dissertations - Archive

Waterborne diseases are the leading cause of deaths globally, estimated to result in more than 3.4 million deaths and approximately 4 billion cases of diarrhea annually according to the World Health Organization (WHO). The United Nations estimates that 4000 children die each day as a result of water-related disease caused by enteric pathogens of bacterial and viral origin that reside in water sources contaminated by raw sewage. Natural compounds from plants have been the source of a number of antimicrobials drugs. Saponins are a diverse group of glycosides that are widely distributed within the plant kingdom and have an equally …

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Validation Of A Transcutaneous Bilirubin Nomogram In Identifying Hispanic Neonates At Risk For Hyperbilirubinemia, Nancy G. Engle Jan 2013

Validation Of A Transcutaneous Bilirubin Nomogram In Identifying Hispanic Neonates At Risk For Hyperbilirubinemia, Nancy G. Engle

Nursing Dissertations - Archive

All newborns are at potential risk of adverse outcomes if they are not monitored for hyperbilirubinemia or if treatment for this problem is inadequate. Strategies are needed to accurately identify those newborns with clinically significant hyperbilirubinemia. Transcutaneous bilirubin (TcB) nomograms offer a useful screening tool to identify and monitor newborns with jaundice, as well as a way to predict the subsequent development of hyperbilirubinemia; however, there have been few studies examining the accuracy of TcB nomograms. The primary purpose of this study was to validate a previously published but unvalidated TcB nomogram to independently determine its accuracy in identifying Hispanic …

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Use Of A Tri-Axial Accelerometer, Behavioral Observation, And Gps To Monitor The Activity Of Female Asian Elephants In A Zoo, Karen Sloane Soulsby Jan 2013

Use Of A Tri-Axial Accelerometer, Behavioral Observation, And Gps To Monitor The Activity Of Female Asian Elephants In A Zoo, Karen Sloane Soulsby

Biology Theses - Archive

Wild elephants spend approximately 90% of their day actively foraging. Reduced activity in captive elephants may increase the risk of obesity and the formation of stereotypical behaviors. In order to evaluate and enhance strategies for managing elephants in captivity, new methods to quantify elephant activity are needed. GPS has been used to measure distances walked during the day in captive elephants. An accelerometer may also be a useful tool for quantifying elephant activity including recording specific behavior patterns without the need for constant observation. In this study, tri-axial accelerometers were tested for measurements of total activity, distances traveled, and activity …

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We Will Remember Turtle Mound: Uncovering The Past And Saving The Future Of Florida’S First People, Suzie Caffery, Diahn Escue Jan 2013

We Will Remember Turtle Mound: Uncovering The Past And Saving The Future Of Florida’S First People, Suzie Caffery, Diahn Escue

CEELAB Children's Books

This book is geared toward fourth graders. It tells the story of the Timucuan people and Turtle Mound, one of the largest coastal shell middens on the east coast. After describing the past, it tells about recent losses of artifacts due to climate change and “living shoreline” efforts to preserve and protect the midden into the future. Tons of fish bones, oyster shells, pieces of broken pottery, and other discarded materials were piled into large mounds, frequently called shell middens, many hundreds of years ago. On the east coast of Central Florida, along the shorelines of Mosquito Lagoon, many mounds …

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Development Of New Stationary Phases And Their Applications In High Performance Liquid Chromatography, Haixiao Qiu Jan 2013

Development Of New Stationary Phases And Their Applications In High Performance Liquid Chromatography, Haixiao Qiu

Chemistry & Biochemistry Dissertations - Archive

High performance liquid chromatography (HPLC) has proven to be the most widely applicable and versatile technique in separation science. Hydrophilic interaction liquid chromatography (HILIC) has attracted considerable interest and has become a viable option for the separation of polar compounds. Chirality is another major concern in the modern pharmaceutical industry for two reasons: 1). the majority of bio-organic molecules are chiral; 2). enantiomers of a racemic drug may often exhibit different biological activities, pharmacokinetics, and toxicities. The field of enantiomeric separations has reached a clear level of maturity after approximately 30 years of development. However, with the continued emphasis on …

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Malleable Ribonucleoprotein Machine: Protein Intrinsic Disorder In The Saccharomyces Cerevisiae Spliceosome, Maria De Lourdes Coelho Ribeiro, Julio Espinosa, Sameen Islam, Osvaldo Martinez, Jayesh Jamnadas Thanki, Stephanie Mazariegos, Tam Nguyen, Maya Larina, Bin Xue, Vladimir N. Uversky Jan 2013

Malleable Ribonucleoprotein Machine: Protein Intrinsic Disorder In The Saccharomyces Cerevisiae Spliceosome, Maria De Lourdes Coelho Ribeiro, Julio Espinosa, Sameen Islam, Osvaldo Martinez, Jayesh Jamnadas Thanki, Stephanie Mazariegos, Tam Nguyen, Maya Larina, Bin Xue, Vladimir N. Uversky

Molecular Medicine Faculty Publications

Recent studies revealed that a significant fraction of any given proteome is presented by proteins that do not have unique 3D structures as a whole or in significant parts. These intrinsically disordered proteins possess dramatic structural and functional variability, being especially enriched in signaling and regulatory functions since their lack of fixed structure defines their ability to be involved in interaction with several proteins and allows them to be re-used in multiple pathways. Among recognized disorder-based protein functions are interactions with nucleic acids and multi-target binding; i.e., the functions ascribed to many spliceosomal proteins. Therefore, the spliceosome, a multimegadalton ribonucleoprotein …

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Structural Characterizations Of Phosphorylatable Residues In Transmembrane Proteins From Arabidopsis Thaliana, Bin Xue, Vladimir N. Uversky Jan 2013

Structural Characterizations Of Phosphorylatable Residues In Transmembrane Proteins From Arabidopsis Thaliana, Bin Xue, Vladimir N. Uversky

Molecular Medicine Faculty Publications

Phosphorylation is a common post-translational modification that plays important roles in a wide range of biochemical and cellular processes. Many enzymes and receptors can be switched “on” or “off” by conformational changes induced by phosphorylation. The phosphorylation process is mediated by a family of enzymes called kinase. Currently, more than 1,000 different kinases have been identified in Arabidopsis thaliana proteome. Kinases interact with each other and with many regulatory proteins forming phosphorylation networks. These phosphorylation networks modulate the signaling processes and control the functions of cells. Normally, kinases phosphorylate serines, threonines, and tyrosines. However, in many proteins, not all of …

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Distribution And Cluster Analysis Of Predicted Intrinsically Disordered Protein Pfam Domains, Robert W. Williams, Bin Xue, Vladimir N. Uversky, A. Keith Dunker Jan 2013

Distribution And Cluster Analysis Of Predicted Intrinsically Disordered Protein Pfam Domains, Robert W. Williams, Bin Xue, Vladimir N. Uversky, A. Keith Dunker

Molecular Medicine Faculty Publications

The Pfam database groups regions of proteins by how well hidden Markov models (HMMs) can be trained to recognize similarities among them. Conservation pressure is probably in play here. The Pfam seed training set includes sequence and structure information, being drawn largely from the PDB. A long standing hypothesis among intrinsically disordered protein (IDP) investigators has held that conservation pressures are also at play in the evolution of different kinds of intrinsic disorder, but we find that predicted intrinsic disorder (PID) is not always conserved across Pfam domains. Here we analyze distributions and clusters of PID regions in 193024 members …

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Digested Disorder: Quarterly Intrinsic Disorder Digest (January/February/March, 2013), Vladimir N. Uversky Jan 2013

Digested Disorder: Quarterly Intrinsic Disorder Digest (January/February/March, 2013), Vladimir N. Uversky

Molecular Medicine Faculty Publications

The current literature on intrinsically disordered proteins is blooming. A simple PubMed search for "intrinsically disordered protein OR natively unfolded protein" returns about 1,800 hits (as of June 17, 2013), with many papers published quite recently. To keep interested readers up to speed with this literature, we are starting a "Digested Disorder" project, which will encompass a series of reader's digest type of publications aiming at the objective representation of the research papers and reviews on intrinsically disordered proteins. The only two criteria for inclusion in this digest are the publication date (a paper should be published within the covered …

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The Alphabet Of Intrinsic Disorder: Ii. Various Roles Of Glutamic Acid In Ordered And Intrinsically Disordered Proteins, Vladimir N. Uversky Jan 2013

The Alphabet Of Intrinsic Disorder: Ii. Various Roles Of Glutamic Acid In Ordered And Intrinsically Disordered Proteins, Vladimir N. Uversky

Molecular Medicine Faculty Publications

The ability of a protein to fold into unique functional state or to stay intrinsically disordered is encoded in its amino acid sequence. Both ordered and intrinsically disordered proteins (IDPs) are natural polypeptides that use the same arsenal of 20 proteinogenic amino acid residues as their major building blocks. The exceptional structural plasticity of IDPs, their capability to exist as heterogeneous structural ensembles and their wide array of important disorder-based biological functions that complements functional repertoire of ordered proteins are all rooted within the peculiar differential usage of these building blocks by ordered proteins and IDPs. In fact, some residues …

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Looking At Microbial Metabolism By High-Resolution (2)H-Nmr Spectroscopy, Victor P. Kutyshenko, Peter M. Beskaravayny, Maxim V. Molchanov, Svetlana I. Paskevich, Dmitry A. Prokhorov, Vladimir N. Uversky Jan 2013

Looking At Microbial Metabolism By High-Resolution (2)H-Nmr Spectroscopy, Victor P. Kutyshenko, Peter M. Beskaravayny, Maxim V. Molchanov, Svetlana I. Paskevich, Dmitry A. Prokhorov, Vladimir N. Uversky

Molecular Medicine Faculty Publications

We analyzed the applicability of high-resolution (2)H-HMR spectroscopy for the analysis of microbe metabolism in samples of mitochondrion isolated from rat liver and from aqueous extracts of homogenates of rat liver and other organs and tissues in the presence of high D2O contents. Such analysis is possible due to the fast microbe adaptation to life in the heavy water. It is also shown that some enzymatic processes typical for the intact cells are preserved in the homogenized tissue preparations. The microbial and cellular metabolic processes can be differentiated via the strategic use of cell poisons and antibiotics.

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Biophysical Characterization Of Α-Synuclein And Rotenone Interaction, Blanca A. Silva, Olöf Einarsdóttir, Anthony L. Fink, Vladimir N. Uversky Jan 2013

Biophysical Characterization Of Α-Synuclein And Rotenone Interaction, Blanca A. Silva, Olöf Einarsdóttir, Anthony L. Fink, Vladimir N. Uversky

Molecular Medicine Faculty Publications

Previous studies revealed that pesticides interact with α-synuclein and accelerate the rate of fibrillation. These results are consistent with the prevailing hypothesis that the direct interaction of α-synuclein with pesticides is one of many suspected factors leading to α-synuclein fibrillation and ultimately to Parkinson's disease. In this study, the biophysical properties and fibrillation kinetics of α-synuclein in the presence of rotenone were investigated and, more specifically, the effects of rotenone on the early-stage misfolded forms of α-synuclein were considered. The thioflavine T (ThT) fluorescence assay studies provide evidence that early-phase misfolded α-synuclein forms are affected by rotenone and that the …

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The Case For Intrinsically Disordered Proteins Playing Contributory Roles In Molecular Recognition Without A Stable 3d Structure, Vladimir N. Uversky, A. Keith Dunker Jan 2013

The Case For Intrinsically Disordered Proteins Playing Contributory Roles In Molecular Recognition Without A Stable 3d Structure, Vladimir N. Uversky, A. Keith Dunker

Molecular Medicine Faculty Publications

The classical ‘lock-and-key’ and ‘induced-fit’ mechanisms for binding both originated in attempts to explain features of enzyme catalysis. For both of these mechanisms and for their recent refinements, enzyme catalysis requires exquisite spatial and electronic complementarity between the substrate and the catalyst. Thus, binding models derived from models originally based on catalysis will be highly biased towards mechanisms that utilize structural complementarity. If mere binding without catalysis is the endpoint, then the structural requirements for the interaction become much more relaxed. Recent observations on specific examples suggest that this relaxation can reach an extreme lack of specific 3D structure, leading …

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Ordered Disorder Of The Astrocytic Dystrophin-Associated Protein Complex In The Norm And Pathology, Insung Na, Derek Redmon, Markus Kopa, Yiru Qin, Bin Xue, Vladimir N. Uversky Jan 2013

Ordered Disorder Of The Astrocytic Dystrophin-Associated Protein Complex In The Norm And Pathology, Insung Na, Derek Redmon, Markus Kopa, Yiru Qin, Bin Xue, Vladimir N. Uversky

Molecular Medicine Faculty Publications

The abundance and potential functional roles of intrinsically disordered regions in aquaporin-4, Kir4.1, a dystrophin isoforms Dp71, α-1 syntrophin, and α-dystrobrevin; i.e., proteins constituting the functional core of the astrocytic dystrophin-associated protein complex (DAPC), are analyzed by a wealth of computational tools. The correlation between protein intrinsic disorder, single nucleotide polymorphisms (SNPs) and protein function is also studied together with the peculiarities of structural and functional conservation of these proteins. Our study revealed that the DAPC members are typical hybrid proteins that contain both ordered and intrinsically disordered regions. Both ordered and disordered regions are important for the stabilization of …

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Actinidia Drm1 - An Intrinsically Disordered Protein Whose Mrna Expression Is Inversely Correlated With Spring Budbreak In Kiwifruit, Marion Wood, Georgina M. Rae, Rong-Mei Wu, Eric F. Walton, Bin Xue, Roger P. Hellens, Vladimir N. Uversky Jan 2013

Actinidia Drm1 - An Intrinsically Disordered Protein Whose Mrna Expression Is Inversely Correlated With Spring Budbreak In Kiwifruit, Marion Wood, Georgina M. Rae, Rong-Mei Wu, Eric F. Walton, Bin Xue, Roger P. Hellens, Vladimir N. Uversky

Molecular Medicine Faculty Publications

Intrinsically disordered proteins (IDPs) are a relatively recently defined class of proteins which, under native conditions, lack a unique tertiary structure whilst maintaining essential biological functions. Functional classification of IDPs have implicated such proteins as being involved in various physiological processes including transcription and translation regulation, signal transduction and protein modification. Actinidia DRM1 (Ade DORMANCY ASSOCIATED GENE 1), represents a robust dormancy marker whose mRNA transcript expression exhibits a strong inverse correlation with the onset of growth following periods of physiological dormancy. Bioinformatic analyses suggest that DRM1 is plant specific and highly conserved at both the nucleotide and protein …

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The Alphabet Of Intrinsic Disorder: I. Act Like A Pro: On The Abundance And Roles Of Proline Residues In Intrinsically Disordered Proteins, Francois-Xavier Theillet, Lajos Kalmar, Peter Tompa, Kyou-Hoon Han, Philipp Selenko, A. Keith Dunker, Gary W. Daughdrill, Vladimir N. Uversky Jan 2013

The Alphabet Of Intrinsic Disorder: I. Act Like A Pro: On The Abundance And Roles Of Proline Residues In Intrinsically Disordered Proteins, Francois-Xavier Theillet, Lajos Kalmar, Peter Tompa, Kyou-Hoon Han, Philipp Selenko, A. Keith Dunker, Gary W. Daughdrill, Vladimir N. Uversky

Molecular Medicine Faculty Publications

A significant fraction of every proteome is occupied by biologically active proteins that do not form unique three-dimensional structures. These intrinsically disordered proteins (IDPs) and IDP regions (IDPRs) have essential biological functions and are characterized by extensive structural plasticity. Such structural and functional behavior is encoded in the amino acid sequences of IDPs/IDPRs, which are enriched in disorder-promoting residues and depleted in order-promoting residues. In fact, amino acid residues can be arranged according to their disorder-promoting tendency to form an alphabet of intrinsic disorder that defines the structural complexity and diversity of IDPs/IDPRs. This review is the first in a …

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The Ube2e Proteins As Conjugating Dispersers: Extending Function With Extended Extensions, Vladimir N. Uversky Jan 2013

The Ube2e Proteins As Conjugating Dispersers: Extending Function With Extended Extensions, Vladimir N. Uversky

Molecular Medicine Faculty Publications

No abstract provided.

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Satellite-Observed Black Water Events Off Southwest Florida: Implications For Coral Reef Health In The Florida Keys National Marine Sanctuary, Jun Zhao, Chuanmin Hu, Brian Lapointe, Nelson Melo, Elizabeth M. Johns, Ryan H. Smith Jan 2013

Satellite-Observed Black Water Events Off Southwest Florida: Implications For Coral Reef Health In The Florida Keys National Marine Sanctuary, Jun Zhao, Chuanmin Hu, Brian Lapointe, Nelson Melo, Elizabeth M. Johns, Ryan H. Smith

Marine Science Faculty Publications

A “black water” event, as observed from satellites, occurred off southwest Florida in 2012. Satellite observations suggested that the event started in early January and ended in mid-April 2012. The black water patch formed off central west Florida and advected southward towards Florida Bay and the Florida Keys with the shelf circulation, which was confirmed by satellite-tracked surface drifter trajectories. Compared with a previous black water event in 2002, the 2012 event was weaker in terms of spatial and temporal coverage. An in situ survey indicated that the 2012 black water patch contained toxic K. brevis and had relatively low …

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Penetration Of Uv-Visible Solar Radiation In The Global Oceans: Insights From Ocean Color Remote Sensing, Zhongping Lee, Chuanmin Hu, Shaoling Shang, Keping Du, Marlon Lewis, Robert Arnone, Robert Brewin Jan 2013

Penetration Of Uv-Visible Solar Radiation In The Global Oceans: Insights From Ocean Color Remote Sensing, Zhongping Lee, Chuanmin Hu, Shaoling Shang, Keping Du, Marlon Lewis, Robert Arnone, Robert Brewin

Marine Science Faculty Publications

Penetration of solar radiation in the ocean is determined by the attenuation coefficient (Kd(λ)). Following radiative transfer theory, Kd is a function of angular distribution of incident light and water's absorption and backscattering coefficients. Because these optical products are now generated routinely from satellite measurements, it is logical to evolve the empirical Kd to a semianalytical Kd that is not only spectrally flexible, but also the sun-angle effect is accounted for explicitly. Here, the semianalytical model developed in Lee et al. (2005b) is revised to account for the shift of phase …

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Long-Term Statistical Assessment Of Aqua-Modis Aerosol Optical Depth Over Coastal Regions: Bias Characteristics And Uncertainty Sources, Jacob C. Anderson, Jun Wang, Jing Zeng, Gregory Leptoukh, Maksym Petrenko, Charles Ichoku, Chuanmin Hu Jan 2013

Long-Term Statistical Assessment Of Aqua-Modis Aerosol Optical Depth Over Coastal Regions: Bias Characteristics And Uncertainty Sources, Jacob C. Anderson, Jun Wang, Jing Zeng, Gregory Leptoukh, Maksym Petrenko, Charles Ichoku, Chuanmin Hu

Marine Science Faculty Publications

Coastal regions around the globe represent a major source for anthropogenic aerosols in the atmosphere, but the surface characteristics may not be optimal for the Moderate Resolution Imaging Spectroradiometer (MODIS) algorithms designed for aerosol retrievals over dark land or ocean surfaces. Using data collected from 62 coastal stations worldwide by the Aerosol Robotic Network (AERONET) in 2002–2011, statistical assessments of uncertainties are conducted for coastal aerosol optical depth (AOD) retrieved from MODIS measurements aboard the Aqua satellite (i.e., the Collection 5.1 MYD04 data product generated by the MODIS atmosphere group). It is found that coastal AODs (at 550 nm) characterised …

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Satellite-Based Virtual Buoy System To Monitor Coastal Water Quality, Chuanmin Hu, Brian B. Barnes, Brock Murch, Paul R. Carlson Jan 2013

Satellite-Based Virtual Buoy System To Monitor Coastal Water Quality, Chuanmin Hu, Brian B. Barnes, Brock Murch, Paul R. Carlson

Marine Science Faculty Publications

There is a pressing need to assess coastal and estuarine water quality state and anomaly events to facilitate coastal management, but such a need is hindered by lack of resources to conduct frequent ship-based or buoy-based measurements. Here, we established a virtual buoy system (VBS) to facilitate satellite data visualization and interpretation of water quality assessment. The VBS is based on a virtual antenna system (VAS) that obtains low-level satellite data and generates higher-level data products using both National Aeronautics and Space Administration standard algorithms and regionally customized algorithms in near real time. The VB stations are predefined and carefully …

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Cover, Ornitología Neotropical Jan 2013

Cover, Ornitología Neotropical

Ornitología Neotropical

No abstract provided.

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