Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

University of Texas Rio Grande Valley

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 4141 - 4170 of 5251

Full-Text Articles in Entire DC Network

Dna Staged Self-Assembly At Temperature 1, Nicholas H. Guiterrez May 2010

Dna Staged Self-Assembly At Temperature 1, Nicholas H. Guiterrez

Theses and Dissertations - UTB/UTPA

We introduce alternate temperature 1 self-assembly constructions of an n x n square by efficiently utilizing bins and stages to achieve desirable results. These bins are able to contain a variety of tiles or supertiles, which are then mixed together in a pre-determined sequence of distinct stages. The basic 2D tile assembly model at temperature 1 uses 2n-1 tile types to construct a square. The model only utilizes one bin and occurs all in one stage. We will demonstrate how the use of bins and stages will allow for the construction of these squares more efficiently.

Go to article

An Exploratory Study Of Methicillin-Resistant Staphylococcus Aureus And Sccmec Elements Obtained From A Community Setting Along The Texas Border With Mexico, David R. Ammons, Raghuveer Puttagunta, Jose C. Granados, Georgina De La Garza, George Eyambe, Joanne Rampersad-Ammons May 2010

An Exploratory Study Of Methicillin-Resistant Staphylococcus Aureus And Sccmec Elements Obtained From A Community Setting Along The Texas Border With Mexico, David R. Ammons, Raghuveer Puttagunta, Jose C. Granados, Georgina De La Garza, George Eyambe, Joanne Rampersad-Ammons

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Chemistry)

An exploratory study of methicillin-resistant Staphylococcus aureus (MRSA) and SCCmec elements in bacteria along the Mexican border of south Texas was performed. Between September and December of 2008, 375 swabs of anterior nares were self-collected by students attending the University of Texas-Pan American (UTPA) and cultured for MRSA. Fifty seven bacterial isolates were kept for further analysis that included suspected MRSA and other SCCmec-containing bacteria. Isolates were examined for the presence of nuc, mecA, lukS-PV, and spa genes using PCR. SCCmec and spa typing were also performed. Seven S. aureus isolates were found …

Go to article

The Pan American (2010-04-29), Brian Silva Apr 2010

The Pan American (2010-04-29), Brian Silva

UTPA Archives - The Pan American Newspaper

Vol. 66, No. 27

Go to article

Bifurcations Of Traveling Wave Solutions For An Integrable Equation, Jibin Li, Zhijun Qiao Apr 2010

Bifurcations Of Traveling Wave Solutions For An Integrable Equation, Jibin Li, Zhijun Qiao

School of Mathematical & Statistical Sciences Faculty Publications

This paper deals with the following equation mt= 1/2 1/mk xxx− 1/2 1/mk x, which is proposed by Z. J. Qiao J. Math. Phys. 48, 082701 2007 and Qiao and Liu Chaos, Solitons Fractals 41, 587 2009. By adopting the phase analysis method of planar dynamical systems and the theory of the singular traveling wave systems to the traveling wave solutions of the equation, it is shown that for different k, the equation may have infinitely many solitary wave solutions, periodic wave solutions, kink/antikink wave solutions, cusped solitary wave solutions, and breaking loop solutions. We discuss in a detail the …

Go to article

The Collegian (2010-04-26), Julianna Sosa Apr 2010

The Collegian (2010-04-26), Julianna Sosa

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 62, No. 27

Go to article

The Collegian (2010-04-19), Julianna Sosa Apr 2010

The Collegian (2010-04-19), Julianna Sosa

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 62, No. 26

Go to article

An Expeditious Synthesis Of N-Substituted Pyrroles Via Microwave-Induced Iodine-Catalyzed Reactions Under Solventless Conditions, Debasish Bandyopadhyay, Sanghamitra Mukherjee, Bimal K. Banik Apr 2010

An Expeditious Synthesis Of N-Substituted Pyrroles Via Microwave-Induced Iodine-Catalyzed Reactions Under Solventless Conditions, Debasish Bandyopadhyay, Sanghamitra Mukherjee, Bimal K. Banik

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Chemistry)

An expeditious synthesis of N-substituted pyrroles has been developed by reacting 2,5-dimethoxy tetrahydrofuran and several amines using a microwave-induced molecular iodine-catalyzed reaction under solventless conditions.

Go to article

The Pan American (2010-04-08), Brian Silva Apr 2010

The Pan American (2010-04-08), Brian Silva

UTPA Archives - The Pan American Newspaper

Vol. 66, No. 24

Go to article

The Collegian (2010-04-05), Julianna Sosa Apr 2010

The Collegian (2010-04-05), Julianna Sosa

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 62, No. 24

Go to article

Utb/Tsc Commencement – Spring 2010, University Of Texas At Brownsville, Texas Southmost College Apr 2010

Utb/Tsc Commencement – Spring 2010, University Of Texas At Brownsville, Texas Southmost College

Brownsville Archives - Legacy Commencement Programs

No abstract provided.

Go to article

Utpa Commencement – Spring 2010, University Of Texas-Pan American Apr 2010

Utpa Commencement – Spring 2010, University Of Texas-Pan American

Edinburg Archives - Legacy Commencement Programs

No abstract provided.

Go to article

Los Arcos - Spring 2010, University Of Texas-Pan American Apr 2010

Los Arcos - Spring 2010, University Of Texas-Pan American

UTPA Archives - Los Arcos Magazine

No abstract provided.

Go to article

Thermal Models Of Railroad Wheels And Bearings, Kevin D. Cole, Constantine Tarawneh, Arturo A. Fuentes, Brent Wilson, Linda Navarro Apr 2010

Thermal Models Of Railroad Wheels And Bearings, Kevin D. Cole, Constantine Tarawneh, Arturo A. Fuentes, Brent Wilson, Linda Navarro

Mechanical Engineering Faculty Publications

The rolling surface for railroad wheels can be a heat source that may have an impact on the performance of the wheel bearing. In this study, experimental data from an electrically-heated railroad wheel set is analyzed by constructing thermal models of the wheel set. A steady finite-element model, a steady-analytical model, and a transient lumped-parameter model are discussed. Model parameters are determined from careful comparisons with the experimental data. The lumped-parameter model given here is intended as a simple predictive tool for determining when wheel heating caused by rail operations will have an impact on bearing temperature. The model parameters …

Go to article

The Collegian (2010-03-08), Julianna Sosa Mar 2010

The Collegian (2010-03-08), Julianna Sosa

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 62, No. 22

Go to article

Microscopic And Spectroscopic Studies Of Thermally Enhanced Electrospun Pmma Micro- And Nanofibers, Sean Pelfrey, Travis Cantu, Michael R. Papantonakis, Duane L. Simonson, R. Andrew Mcgill, Javier Macossay-Torres Mar 2010

Microscopic And Spectroscopic Studies Of Thermally Enhanced Electrospun Pmma Micro- And Nanofibers, Sean Pelfrey, Travis Cantu, Michael R. Papantonakis, Duane L. Simonson, R. Andrew Mcgill, Javier Macossay-Torres

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Chemistry)

Carbon nanofibers (CNFs) have been incorporated into poly(methyl methacrylate) (PMMA) through electrospinning. The resulting micro- and nanofibers have been characterized by Scanning Electron Microscopy (SEM), which confirmed fiber formation and demonstrated a core-sheath structure of the PMMA fibers. Thermogravimetric Analysis (TGA) was used to obtain the thermal properties of the materials, indicating an enhancement in the thermal properties of the composite fibers. In addition, Fourier Transform Infrared Spectroscopy (FTIR) was utilized to investigate the interactions of PMMA micro- and nanofibers with CNFs, demonstrating the preferred sites of intermolecular interactions between the polymer matrix and the filler.

Go to article

Septo-Hippocampal Networks In Chronic Epilepsy, Antonio García-Hernández, Brian H. Bland, Julio Facelli, Luis V. Colom Mar 2010

Septo-Hippocampal Networks In Chronic Epilepsy, Antonio García-Hernández, Brian H. Bland, Julio Facelli, Luis V. Colom

Health & Biomedical Sciences Faculty Publications

The medial septum inhibits the appearance of interictal spikes and seizures through theta rhythm generation. We have determined that medial septal neurons increase their firing rates during chronic epilepsy and that the GABAergic neurons from both medial and lateral septal regions are highly and selectively vulnerable to the epilepsy process. Since the lateral septal region receives a strong projection from the hippocampus and its neurons are vulnerable to epilepsy, their functional properties are probably altered by this disorder. Using the pilocarpine model of temporal lobe epilepsy we examined the pilocarpine-induced functional alterations of lateral septal neurons and provided additional observations …

Go to article

Nuclear Quantum Effects In The Structure And Lineshapes Of The N2 Near-Edge X-Ray Absorption Fine Structure Spectrum, Shervin Fatehi, Craig P. Schwartz, Richard J. Saykally, David Prendergast Mar 2010

Nuclear Quantum Effects In The Structure And Lineshapes Of The N2 Near-Edge X-Ray Absorption Fine Structure Spectrum, Shervin Fatehi, Craig P. Schwartz, Richard J. Saykally, David Prendergast

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Chemistry)

We study the relative ability of several models of x-ray absorption spectra to capture the Franck–Condon structure apparent from an experiment on gaseous nitrogen. In doing so, we adopt the Born–Oppenheimer approximation and a constrained density functional theory method for computing the energies of the x-ray-excited molecule. Starting from an otherwise classical model for the spectrum, we systematically introduce more realistic physics, first by substituting the quantum mechanical nuclear radial density in the bond separation R for the classical radial density, then by adding the effect of zero-point energy and other level shifts, and finally by including explicit rovibrational quantization …

Go to article

On The Anomalous Balmer Line Strengths In Globular Clusters, Violet Poole, Guy Worthey, Hyun Chul Lee, Jedidiah Serven Feb 2010

On The Anomalous Balmer Line Strengths In Globular Clusters, Violet Poole, Guy Worthey, Hyun Chul Lee, Jedidiah Serven

Physics & Astronomy Faculty Publications

Spectral feature index diagrams with integrated globular clusters and simple stellar population models often show that some clusters have weak Hβ, so weak that even the oldest models cannot match the observed feature depths. In this work, we rule out the possibility that abundance mixture effects are responsible for the weak indices unless such changes operate to cool the entire isochrone. We discuss this result in the context of other explanations, including horizontal branch morphology, blue straggler populations, and nebular or stellar emission fill-in, finding a preference for flaring in M giants as an explanation for the Hβ anomaly. © …

Go to article

Remarkable Iodine-Catalyzed Synthesis Of Novel Pyrrole- Bearing N-Polyaromatic B-Lactams, Debasish Bandyopadhyay, Gildardo Rivera, Isabel Salinas, Hector Aguilar, Bimal K. Banik Feb 2010

Remarkable Iodine-Catalyzed Synthesis Of Novel Pyrrole- Bearing N-Polyaromatic B-Lactams, Debasish Bandyopadhyay, Gildardo Rivera, Isabel Salinas, Hector Aguilar, Bimal K. Banik

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Chemistry)

Because of their interesting biological properties various methods for the synthesis of substituted pyrroles are described in the literature. However, synthesis of pyrroles fused with a β-lactam ring has not been reported. Our group has demonstrated synthesis and biological evaluation of various β-lactams as anticancer agents. The anticancer activities of these compounds have prompted us to study the synthesis of pyrroles bound to the β-lactams. We have identified an expeditious synthetic method for the preparation of pyrroles fused with β-lactams by reacting 3-amino β-lactams with acetonylacetone in the presence of catalytic amounts (5 mol%) of molecular iodine at room temperature. …

Go to article

The Collegian (2010-02-22), Julianna Sosa Feb 2010

The Collegian (2010-02-22), Julianna Sosa

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 62, No. 20

Go to article

The Collegian (2010-02-15), Julianna Sosa Feb 2010

The Collegian (2010-02-15), Julianna Sosa

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 62, No. 19

Go to article

The Pan American (2010-02-11), Brian Silva Feb 2010

The Pan American (2010-02-11), Brian Silva

UTPA Archives - The Pan American Newspaper

Vol. 66, No. 17

Go to article

The Collegian (2010-01-25), Julianna Sosa Jan 2010

The Collegian (2010-01-25), Julianna Sosa

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 62, No. 16

Go to article

Utb/Tsc Board Of Trustees - Packet - 2010-01-21, University Of Texas At Brownsville And Texas Southmost College. Vice President For Administration And Partnership Affairs. Jan 2010

Utb/Tsc Board Of Trustees - Packet - 2010-01-21, University Of Texas At Brownsville And Texas Southmost College. Vice President For Administration And Partnership Affairs.

UTB/TSC Archives - UTB/TSC Board of Trustees Meetings 2003-2011

No abstract provided.

Go to article

The Pan American (2010-01-19), Brian Silva Jan 2010

The Pan American (2010-01-19), Brian Silva

UTPA Archives - The Pan American Newspaper

Vol. 66, No. 14

Go to article

Shape Replication Through Self-Assembly And Rnase Enzymes, Zachary Abel, Nadia Benbernou, Mirela Damian, Erik D. Demaine, Martin L. Demaine, Robin Flatland, Scott D. Kominers, Robert Schweller Jan 2010

Shape Replication Through Self-Assembly And Rnase Enzymes, Zachary Abel, Nadia Benbernou, Mirela Damian, Erik D. Demaine, Martin L. Demaine, Robin Flatland, Scott D. Kominers, Robert Schweller

Computer Science Faculty Publications

We introduce the problem of shape replication in the Wang tile self-assembly model. Given an input shape, we consider the problem of designing a self-assembly system which will replicate that shape into either a specific number of copies, or an unbounded number of copies. Motivated by practical DNA implementations of Wang tiles, we consider a model in which tiles consisting of DNA or RNA can be dynamically added in a sequence of stages. We further permit the addition of RNase enzymes capable of disintegrating RNA tiles. Under this model, we show that arbitrary genus-0 shapes can be replicated infinitely many …

Go to article

Recovery Of Rectified Signals From Hot-Wire/Film Anemometers Due To Flow Reversal In Oscillating Flows, Yingchen Yang, Douglas L. Jones, Chang Liu Jan 2010

Recovery Of Rectified Signals From Hot-Wire/Film Anemometers Due To Flow Reversal In Oscillating Flows, Yingchen Yang, Douglas L. Jones, Chang Liu

Mechanical Engineering Faculty Publications

Hot-wire/film anemometers have been broadly used in experimental studies in fluid mechanics, acoustics, and ocean engineering. Yet, it is well known that hot-wire/film anemometers rectify the signal outputs due to the lack of sensitivity to flow direction. This main drawback, in turn, makes them less useful for diverse fluctuating flow measurements. To solve this issue, a rectification recovery method has been developed based on reconstruction of the Fourier series expansion in conjunction with signal-squaring approach. This signal recovery method was experimentally examined and proven to be successful for both conventional and microfabricated hot-wire/film anemometers. The method was further applied to …

Go to article

Utb/Tsc Student Handbook 2010-2011, University Of Texas At Brownsville, Texas Southmost College Jan 2010

Utb/Tsc Student Handbook 2010-2011, University Of Texas At Brownsville, Texas Southmost College

Student Handbooks (UTB/UTPA)

No abstract provided.

Go to article

Utb/Tsc Commencement – Winter 2010, University Of Texas At Brownsville, Texas Southmost College Jan 2010

Utb/Tsc Commencement – Winter 2010, University Of Texas At Brownsville, Texas Southmost College

Brownsville Archives - Legacy Commencement Programs

No abstract provided.

Go to article

Utb/Tsc Legacy Degree Programs And Courses 2010 – 2011, University Of Texas At Brownsville, Texas Southmost College Jan 2010

Utb/Tsc Legacy Degree Programs And Courses 2010 – 2011, University Of Texas At Brownsville, Texas Southmost College

UTB/TSC Archives - Course Catalogs

No abstract provided.

Go to article

First Prev Next Last