Bacterial cross talk in mixed culture

Abstract :-
Quorum sensing is the term used to describe signaling pathways used by bacteria for intra and interspecies communication. Autoinducer 2 (AI2) is one signal molecule known to be involved in quorum sensing that stands out because it appears to be expressed across a wide variety of bacterial species. A genetic switch has been created exploits the AI2 quorum sensing pathway by turning on a target marker gene, green fluorescent protein, in the presence of AI2. Continue reading Bacterial cross talk in mixed culture

Application of Dynamic Light Scattering to Chemical and Biomolecular Engineering: Polymers, Proteins, and Liquid Crystals

Abstract :-
Dynamic Light Scattering (DLS) is a powerful tool for probing soft-matter. The history, equipment, and basic theory of DLS is outlined. Three applications of DLS representing contemporary problems in chemical and biomolecular engineering are presented: polymers, proteins, and liquid crystals. DLS was performed on the polymer poly(ethylene glycol) in aqueous solutions to discern a conformational change from a coil to a helix when dissolved in isobutyric acid and to compare DLS and small angle neutron scattering (SANS) measurements. Continue reading Application of Dynamic Light Scattering to Chemical and Biomolecular Engineering: Polymers, Proteins, and Liquid Crystals

Development and Evaluation of a Web-based Breast Cancer Cultural Competency Course for Primary Healthcare Providers

Abstract :-
To develop and evaluate a continuing medical education (CME) course aimed at improving healthcare provider knowledge about breast cancer health disparities and the importance of cross-cultural communication in provider-patient interactions about breast cancer screening. Continue reading Development and Evaluation of a Web-based Breast Cancer Cultural Competency Course for Primary Healthcare Providers

Optimization of PCR Conditions to Amplify Microsatellite loci in the bunchgrass lizard (Sceloporus slevini) genomic DNA

Abstract :-
Microsatellites, also called Simple Sequence Repeats (SSRs), repetitions of nucleotide motifs of 1-5 bases, are currently the markers of choice due to their abundant distribution in the genomes, and suitability for high-throughput analysis. A total of five different primer pairs were optimized for polymerase chain reaction (PCR) to amplify microsatellite loci in total genomic DNA of bunchgrass lizards (Sceloporus slevini) collected from three sites in southeastern Arizona; the Sonoita Plain, Chiricahua Mountains and Huachuca Mountains. Continue reading Optimization of PCR Conditions to Amplify Microsatellite loci in the bunchgrass lizard (Sceloporus slevini) genomic DNA

An Analysis of a New Approach to Sol-gel Synthesis: The Reaction of Formic Acid with Teos

An Analysis of a New Approach to Sol-gel Synthesis: The Reaction of Formic Acid with Teos

Abstract :-
FTIR spectroscopy was investigated as a means of monitoring the reactions of formic acid and tetraethoxy silane, TEOS, at different temperatures and molar ratios of formic acid to TEOS, r. FTIR spectra of the reactions at r values of 1, 2, and 6 showed that increasing the molar ratio and temperature significantly increased the rates of hydrolysis and condensation. An activation energy of 10.5 0.6 kcal/mole was determined for the r= 6 system. 29Si NMR was used to monitor the reaction of formic acid with TEOS at molar ratios of 1, 2, and 6. The increase in reaction rate with increasing molar ratio was clearly evident in the silica NMR spectra. Continue reading An Analysis of a New Approach to Sol-gel Synthesis: The Reaction of Formic Acid with Teos

Bio-inspired navigation on a GPU

Bio-inspired navigation on a GPU

Abstract :-
This study presents an appearance based Simultaneous Localisation and Mapping (SLAM) algorithm that exploits the Graphics Processing Unit (GPU) as a general-purpose numerical coprocessor. This approach delivers immediate performance gains and improves algorithmic scalability.

The GPU has massive parallel computational resources that have traditionally been tied to rendering of graphics. Recent multidisciplinary research aimed at harnessing these resources and redirecting them for general-purpose computing has yielded performance increases on the order of 1.5 Ð 600x when compared to equivalent optimised CPU implementations. This research has been sparked in part by the release of the CUDA API, which provides an interface to the memory and arithmetic units of the GPU. The robotics community has ported common algorithms to the GPU, however previous studies on GPU accelerated SLAM have focussed only on a single or few components of the broader system. This study takes a holistic approach, accelerating all major components of SLAM. Continue reading Bio-inspired navigation on a GPU