oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 10 )

2019 ( 430 )

2018 ( 520 )

2017 ( 536 )

Custom range...

Search Results: 1 - 10 of 325857 matches for " Gail S Masterton "
All listed articles are free for downloading (OA Articles)
Page 1 /325857
Display every page Item
Update of endoscopy in liver disease: More than just treating varices
Christoforos Krystallis,Gail S Masterton,Peter C Hayes,John N Plevris
World Journal of Gastroenterology , 2012, DOI: 10.3748/wjg.v18.i5.401
Abstract: The management of complications in liver disease is often complex and challenging. Endoscopy has undergone a period of rapid expansion with numerous novel and specialized endoscopic modalities that are of increasing value in the investigation and management of the patient with liver disease. In this review, relevant literature search and expert opinions have been used to provide a brief overview and update of the current endoscopic management of patients with liver disease and portal hypertension. The main areas covered are safety of endoscopy in patients with liver disease, the use of standard endoscopy for the treatment of varices and the role of new endoscopic modalities such as endoscopic ultrasound, esophageal capsule, argon plasma coagulation, spyglass and endomicroscopy in the investigation and treatment of liver-related gastrointestinal and biliary pathology. It is clear that the role of the endoscopy in liver disease is well beyond that of just treating varices. As the technology in endoscopy expands, so does the role of the endoscopist in liver disease.
Vision and Change–ing A First-Year Biology Classroom
Gail S. Begley
Journal of Microbiology & Biology Education , 2012, DOI: 10.1128/jmbe.v13i1.381
Abstract: -
Monitoring the autoproteolysis of hiv-1 protease by site-directed spin-labeling and electron paramagnetic resonance spectroscopy  [PDF]
Jamie L. Kear, Luis Galiano, Angelo M. Veloro, Laura S. Busenlehner, Gail E. Fanucci
Journal of Biophysical Chemistry (JBPC) , 2011, DOI: 10.4236/jbpc.2011.22017
Abstract: Site-directed spin-labeling with continuous wave electron paramagnetic resonance spectroscopy was used to monitor autoproteolysis of HIV-1 protease, an enzyme essential for viral maturation. Two protein constructs were examined, namely subtype F and the circulating recombinant form CRF01_A/E. As the protease undergoes self-cleavage, protein unfolds and small peptide fragments containing the spin label are generated, which collectively give rise to a sharp spectral component that is easily discernable in the high-field resonance line in the EPR spectrum. By monitoring the intensity of this spectral component over time, the autoproteolytic stability of each construct was characterized under various conditions. Data were collected for samples stored at 4 °C, 25 °C, and 37 °C, and on a subtype F HIV-1 protease sample stored at 25 °C and containing the FDA-approved protease inhibitor Tipranavir. As expected, the rate of autoproteolysis decreased as the storage temperature was lowered. Minimal autoproteolysis was seen for the sample that contained Tipranavir, providing direction for future spectroscopic studies of active protease samples. When compared to standard methods of monitoring protein degradation such as gel electrophoresis or chromatographic analyses, spin-labeling with CW EPR offers a facile, real-time, non-consuming way to monitor autoproteolysis or protein degradation. Additionally, mass spectrometry studies revealed that the N-termini of both constructs are sensitive to degradation and that the sites of specific autoproteolysis vary.
A Predator-Prey Model in the Chemostat with Time Delay
Guihong Fan,Gail S. K. Wolkowicz
International Journal of Differential Equations , 2010, DOI: 10.1155/2010/287969
Abstract: The aim of this paper is to study the dynamics of predator-prey interaction in a chemostat to determine whether including a discrete delay to model the time between the capture of the prey and its conversion to viable biomass can introduce oscillatory dynamics even though there is a globally asymptotically stable equilibrium when the delay is ignored. Hence, Holling type I response functions are chosen so that no oscillatory behavior is possible when there is no delay. It is proven that unlike the analogous model for competition, as the parameter modeling the delay is increased, Hopf bifurcations can occur.
Manipulating a Neutrino Spectrum to Maximize the Physics Potential from a Low Energy Beta Beam
Amanik, Philip S.;McLaughlin, Gail C.
High Energy Physics - Phenomenology , 2007, DOI: 10.1103/PhysRevC.75.065502
Abstract: Proposed low energy beta beam facilities would be capable of producing intense beams of neutrinos (anti-neutrinos) with well defined spectra. We present analytic expressions and numerical results which accurately show how the total neutrino flux reaching the detector depends on the geometry of the source and the detector. Several authors have proposed measurements which require using different flux shapes. We show that detectors of different sizes and shapes will receive neutrino fluxes with different spectral shapes, and that the spectral shape will also be different in different regions of the same detector. Our findings also show that for certain measurements systematic uncertainties and run time can be reduced.
Neutron Form Factor from Neutrino-Nucleus Coherent Elastic Scattering
Amanik, Philip S.;McLaughlin, Gail C.
High Energy Physics - Phenomenology , 2007,
Abstract: We analyze the prospect of measuring the neutron form factor of a nucleus through the detection of neutrino-nucleus coherent elastic scattering. We predict numbers of events in a liquid noble nuclear recoil detector at a stopped pion neutrino source. We discuss the precision required to distinguish between different theoretical models for the form factor.
Optical modes in linear arrays of dielectric spherical particles: A numerical investigation
Gail S. Blaustein,Alexander L. Burin
Physics , 2007, DOI: 10.1117/12.714584
Abstract: We have investigated bound modes in finite linear chains of dielectric particles of various lengths, interparticle spacing and particle materials. Through a unique application of the multisphere Mie scattering formalism, we have developed numerical methods to calculate eigen-optical modes for various arrays of particles. These numerical methods involve the use of the multisphere scattering formalism as the entries in NxN matrices where N represents the number of particles in the chain. Eigenmodes of these matrices correspond to the eigen-optical modes of interest. We identified the eigenmodes with the highest quality factor by the application of a modified version of the Newton-Raphson algorithm. We found that convergence is strong using this algorithm for linear chains of up to several hundreds of particles. By comparing the dipolar approach with the more complex approach which utilizes a combination of both dipolar and quadrupolar approaches, we demonstrated that the dipolar approach has an accuracy of approximately 99%. We found that the quality factor Q of the mode increases with the cubed value of the number of particles in chain in agreement with the previously developed theory, the effects of disordering of particle sizes and inter-particle distances will be discussed.
Neutron Form Factor from Neutrino-Nucleus Coherent Elastic Scattering
Philip S. Amanik,Gail C. McLaughlin
Physics , 2007,
Abstract: We analyze the prospect of measuring the neutron form factor of a nucleus through the detection of neutrino-nucleus coherent elastic scattering. We predict numbers of events in a liquid noble nuclear recoil detector at a stopped pion neutrino source. We discuss the precision required to distinguish between different theoretical models for the form factor.
Manipulating a Neutrino Spectrum to Maximize the Physics Potential from a Low Energy Beta Beam
Philip S. Amanik,Gail C. McLaughlin
Physics , 2007, DOI: 10.1103/PhysRevC.75.065502
Abstract: Proposed low energy beta beam facilities would be capable of producing intense beams of neutrinos (anti-neutrinos) with well defined spectra. We present analytic expressions and numerical results which accurately show how the total neutrino flux reaching the detector depends on the geometry of the source and the detector. Several authors have proposed measurements which require using different flux shapes. We show that detectors of different sizes and shapes will receive neutrino fluxes with different spectral shapes, and that the spectral shape will also be different in different regions of the same detector. Our findings also show that for certain measurements systematic uncertainties and run time can be reduced.
Book Recommendation: Advances in Water Quality Control  [PDF]
Gail Krantzberg, Aysegul Tanik
Journal of Water Resource and Protection (JWARP) , 2010, DOI: 10.4236/jwarp.2010.212119
Abstract: Book Recommendation: Advances in Water Quality Control Gail Krantzberg, Aysegul Tanik et al. Scientific Research Publishing, 2010 316 pages ISBN: 978-1-935068-08-2 Paperback (US$89.00) E-book (US$89.00) Order online: www.scirp.org/book Order by email: bookorder@scirp.org
Page 1 /325857
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.