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Louisiana State University

2010

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Unavoidable Topological Minors Of Infinite Graphs, Carolyn Chun, Guoli Ding Dec 2010

Unavoidable Topological Minors Of Infinite Graphs, Carolyn Chun, Guoli Ding

Faculty Publications

A graph G is loosely-c-connected, or ℓ-c-connected, if there exists a number d depending on G such that the deletion of fewer than c vertices from G leaves precisely one infinite component and a graph containing at most d vertices. In this paper, we give the structure of a set of ℓ-c-connected infinite graphs that form an unavoidable set among the topological minors of ℓ-c-connected infinite graphs. Corresponding results for minors and parallel minors are also obtained. © 2010 Elsevier B.V. All rights reserved.

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Using Off-Diagonal Confinement As A Cooling Method, V. G. Rousseau, K. Hettiarachchilage, M. Jarrell, J. Moreno, D. E. Sheehy Dec 2010

Using Off-Diagonal Confinement As A Cooling Method, V. G. Rousseau, K. Hettiarachchilage, M. Jarrell, J. Moreno, D. E. Sheehy

Faculty Publications

In a recent letter we proposed a new confining method for ultracold atoms on optical lattices, which is based on off-diagonal confinement (ODC). This method was shown to have distinct advantages over the conventional diagonal confinement (DC), which makes use of a trapping potential, such as the existence of pure Mott phases and highly populated condensates. In this manuscript we show that the ODC method can also lead to lower temperatures than the DC method for a wide range of control parameters. Using exact diagonalization we determine this range of parameters for the hard-core case and then we extend our …

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Consistent Probabilities In Wheeler-Dewitt Quantum Cosmology, David A. Craig, Parampreet Singh Dec 2010

Consistent Probabilities In Wheeler-Dewitt Quantum Cosmology, David A. Craig, Parampreet Singh

Faculty Publications

We give an explicit, rigorous framework for calculating quantum probabilities in a model theory of quantum gravity. Specifically, we construct the decoherence functional for the Wheeler-DeWitt quantization of a flat Friedmann-Robertson-Walker cosmology with a free, massless, minimally coupled scalar field, thus providing a complete decoherent histories formulation for this quantum cosmological model. The decoherence functional is applied to study predictions concerning the model's Dirac (relational) observables; the behavior of semiclassical states and superpositions of such states; and to study the singular behavior of quantum Wheeler-DeWitt universes. Within this framework, rigorous formulas are given for calculating the corresponding probabilities from the …

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Erratum: Measurement Of Particle Production And Inclusive Differential Cross Sections In Pp̄ Collisions At √S=1.96tev (Physical Review D - Particles, Fields, Gravitation And Cosmology), T. Aaltonen, J. Adelman, T. Akimoto, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, A. Apresyan, T. Arisawa, A. Artikov, W. Ashmanskas, A. Attal, A. Aurisano, F. Azfar, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, P. Barria, V. Bartsch, G. Bauer, P. H. Beauchemin, F. Bedeschi, D. Beecher, S. Behari Dec 2010

Erratum: Measurement Of Particle Production And Inclusive Differential Cross Sections In Pp̄ Collisions At √S=1.96tev (Physical Review D - Particles, Fields, Gravitation And Cosmology), T. Aaltonen, J. Adelman, T. Akimoto, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, A. Apresyan, T. Arisawa, A. Artikov, W. Ashmanskas, A. Attal, A. Aurisano, F. Azfar, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, P. Barria, V. Bartsch, G. Bauer, P. H. Beauchemin, F. Bedeschi, D. Beecher, S. Behari

Faculty Publications

No abstract provided.

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Observation Of Single Top Quark Production And Measurement Of |V Tb| With Cdf, T. Aaltonen, J. Adelman, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, J. Appel, A. Apresyan, T. Arisawa, A. Artikov, J. Asaadi, W. Ashmanskas, A. Attal, A. Aurisano, F. Azfar, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, P. Barria, P. Bartos, G. Bauer, P. H. Beauchemin, F. Bedeschi, D. Beecher Dec 2010

Observation Of Single Top Quark Production And Measurement Of |V Tb| With Cdf, T. Aaltonen, J. Adelman, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, J. Appel, A. Apresyan, T. Arisawa, A. Artikov, J. Asaadi, W. Ashmanskas, A. Attal, A. Aurisano, F. Azfar, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, P. Barria, P. Bartos, G. Bauer, P. H. Beauchemin, F. Bedeschi, D. Beecher

Faculty Publications

We report the observation of electroweak single top quark production in 3.2fb⊃-1 of pp̄ collision data collected by the Collider Detector at Fermilab at √s=1.96TeV. Candidate events in the W+jets topology with a leptonically decaying W boson are classified as signal-like by four parallel analyses based on likelihood functions, matrix elements, neural networks, and boosted decision trees. These results are combined using a super discriminant analysis based on genetically evolved neural networks in order to improve the sensitivity. This combined result is further combined with that of a search for a single top quark signal in an orthogonal sample of …

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In Vivo Evidence For The Iron-Binding Activity Of An Iron-Sulfur Cluster Assembly Protein Isca In Escherichia Coli, Wu Wang, Hao Huang, Guoqiang Tan, Fan Si, Min Liu, Aaron P. Landry, Jianxin Lu, Huangen Ding Dec 2010

In Vivo Evidence For The Iron-Binding Activity Of An Iron-Sulfur Cluster Assembly Protein Isca In Escherichia Coli, Wu Wang, Hao Huang, Guoqiang Tan, Fan Si, Min Liu, Aaron P. Landry, Jianxin Lu, Huangen Ding

Faculty Publications

IscA is a key member of the iron-sulfur cluster assembly machinery in prokaryotic and eukaryotic organisms; however, the physiological function of IscA still remains elusive. In the present paper we report the in vivo evidence demonstrating the iron-binding activity of IscA in Escherichia coli cells. Supplement of exogenous iron (1 μM) in M9 minimal medium is sufficient to maximize the iron binding in IscA expressed in E. coli cells under aerobic growth conditions. In contrast, IscU, an iron-sulfur cluster assembly scaffold protein, or CyaY, a bacterial frataxin homologue, fails to bind any iron in E. coli cells under the same …

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Source Identification In Two Criminal Cases Using Phylogenetic Analysis Of Hiv-1 Dna Sequences, Diane I. Scaduto, Jeremy M. Brown, Wade C. Haaland, Derrick J. Zwickl, David M. Hillis, Michael L. Metzker Dec 2010

Source Identification In Two Criminal Cases Using Phylogenetic Analysis Of Hiv-1 Dna Sequences, Diane I. Scaduto, Jeremy M. Brown, Wade C. Haaland, Derrick J. Zwickl, David M. Hillis, Michael L. Metzker

Faculty Publications

Phylogenetic analysis has been widely used to test the a priori hypothesis of epidemiological clustering in suspected transmission chains of HIV-1. Among studies showing strong support for relatedness between HIV samples obtained from infected individuals, evidence for the direction of transmission between epidemiologically related pairs has been lacking. During transmission of HIV, a genetic bottleneck occurs, resulting in the paraphyly of source viruses with respect to those of the recipient. This paraphyly establishes the direction of transmission, from which the source can then be inferred. Here, we present methods and results from two criminal cases, State of Washington v Anthony …

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Top Quark Mass Measurement In The Lepton+Jets Channel Using A Matrix Element Method And In Situ Jet Energy Calibration, T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, J. A. Appel, A. Apresyan, T. Arisawa, A. Artikov, J. Asaadi, W. Ashmanskas, B. Auerbach, A. Aurisano, F. Azfar, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, P. Barria, P. Bartos, M. Bauce, G. Bauer, F. Bedeschi, D. Beecher, S. Behari Dec 2010

Top Quark Mass Measurement In The Lepton+Jets Channel Using A Matrix Element Method And In Situ Jet Energy Calibration, T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, J. A. Appel, A. Apresyan, T. Arisawa, A. Artikov, J. Asaadi, W. Ashmanskas, B. Auerbach, A. Aurisano, F. Azfar, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, P. Barria, P. Bartos, M. Bauce, G. Bauer, F. Bedeschi, D. Beecher, S. Behari

Faculty Publications

A precision measurement of the top quark mass mt is obtained using a sample of tt̄ events from pp̄ collisions at the Fermilab Tevatron with the CDF II detector. Selected events require an electron or muon, large missing transverse energy, and exactly four high-energy jets, at least one of which is tagged as coming from a b quark. A likelihood is calculated using a matrix element method with quasi-Monte Carlo integration taking into account finite detector resolution and jet mass effects. The event likelihood is a function of mt and a parameter ΔJES used to calibrate the jet energy scale …

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Improved Search For A Higgs Boson Produced In Association With Z→L+L- In Pp̄ Collisions At √S=1.96tev, T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, J. A. Appel, A. Apresyan, T. Arisawa, A. Artikov, J. Asaadi, W. Ashmanskas, B. Auerbach, A. Aurisano, F. Azfar, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, P. Barria, P. Bartos, M. Bauce, G. Bauer, F. Bedeschi, D. Beecher, S. Behari Dec 2010

Improved Search For A Higgs Boson Produced In Association With Z→L+L- In Pp̄ Collisions At √S=1.96tev, T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, J. A. Appel, A. Apresyan, T. Arisawa, A. Artikov, J. Asaadi, W. Ashmanskas, B. Auerbach, A. Aurisano, F. Azfar, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, P. Barria, P. Bartos, M. Bauce, G. Bauer, F. Bedeschi, D. Beecher, S. Behari

Faculty Publications

We search for the standard model Higgs boson produced with a Z boson in 4.1fb⊃-1 of integrated luminosity collected with the CDF II detector at the Tevatron. In events consistent with the decay of the Higgs boson to a bottom-quark pair and the Z boson to electrons or muons, we set 95% credibility level upper limits on the ZH production cross section multiplied by the H→bb̄ branching ratio. Improved analysis methods enhance signal sensitivity by 20% relative to previous searches. At a Higgs boson mass of 115GeV/c2 we set a limit of 5.9 times the standard model cross section. © …

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Identifying The Quantum Correlations In Light-Harvesting Complexes, Kamil Brádler, Mark M. Wilde, Sai Vinjanampathy, Dmitry B. Uskov Dec 2010

Identifying The Quantum Correlations In Light-Harvesting Complexes, Kamil Brádler, Mark M. Wilde, Sai Vinjanampathy, Dmitry B. Uskov

Faculty Publications

One of the major efforts in the quantum biological program is to subject biological systems to standard tests or measures of quantumness. These tests and measures should elucidate whether nontrivial quantum effects may be present in biological systems. Two such measures of quantum correlations are the quantum discord and the relative entropy of entanglement. Here, we show that the relative entropy of entanglement admits a simple analytic form when dynamics and accessible degrees of freedom are restricted to a zero- and single-excitation subspace. We also simulate and calculate the amount of quantum discord that is present in the Fenna-Matthews-Olson protein …

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An Analytic Model Of Neutron Ambient Dose Equivalent And Equivalent Dose For Proton Radiotherapy, Rui Zhang, Angélica Pérez-Andújar, Jonas D. Fontenot, Phillip J. Taddei, Wayne D. Newhauser Dec 2010

An Analytic Model Of Neutron Ambient Dose Equivalent And Equivalent Dose For Proton Radiotherapy, Rui Zhang, Angélica Pérez-Andújar, Jonas D. Fontenot, Phillip J. Taddei, Wayne D. Newhauser

Faculty Publications

Stray neutrons generated in passively scattered proton therapy are of concern because they increase the risk that a patient will develop a second cancer. Several investigations characterized stray neutrons in proton therapy using experimental measurements and Monte Carlo simulations, but capabilities of analytical methods to predict neutron exposures are less well developed. The goal of this study was to develop a new analytical model to calculate neutron ambient dose equivalent in air and equivalent dose in phantom based on Monte Carlo modeling of a passively scattered proton therapy unit. The accuracy of the new analytical model is superior to a …

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Methodology For Determining Doses To In-Field, Out-Of-Field And Partially In-Field Organs For Late Effects Studies In Photon Radiotherapy, Rebecca M. Howell, Sarah B. Scarboro, Phillip J. Taddei, Sunil Krishnan, Stephen F. Kry, Wayne D. Newhauser Dec 2010

Methodology For Determining Doses To In-Field, Out-Of-Field And Partially In-Field Organs For Late Effects Studies In Photon Radiotherapy, Rebecca M. Howell, Sarah B. Scarboro, Phillip J. Taddei, Sunil Krishnan, Stephen F. Kry, Wayne D. Newhauser

Faculty Publications

An important but little examined aspect of radiation dosimetry studies involving organs outside the treatment field is how to assess dose to organs that are partially within a treatment field; this question is particularly important for studies intended to measure total absorbed dose in order to predict the risk of radiogenic late effects, such as second cancers. The purpose of this investigation was therefore to establish a method to categorize organs as in-field, out-of-field or partially in-field that would be applicable to both conventional and modern radiotherapy techniques. In this study, we defined guidelines to categorize the organs based on …

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Estimate Of The Uncertainties In The Relative Risk Of Secondary Malignant Neoplasms Following Proton Therapy And Intensity-Modulated Photon Therapy, Jonas D. Fontenot, Charles Bloch, David Followill, Uwe Titt, Wayne D. Newhauser Dec 2010

Estimate Of The Uncertainties In The Relative Risk Of Secondary Malignant Neoplasms Following Proton Therapy And Intensity-Modulated Photon Therapy, Jonas D. Fontenot, Charles Bloch, David Followill, Uwe Titt, Wayne D. Newhauser

Faculty Publications

Theoretical calculations have shown that proton therapy can reduce the incidence of radiation-induced secondary malignant neoplasms (SMN) compared with photon therapy for patients with prostate cancer. However, the uncertainties associated with calculations of SMN risk had not been assessed. The objective of this study was to quantify the uncertainties in projected risks of secondary cancer following contemporary proton and photon radiotherapies for prostate cancer. We performed a rigorous propagation of errors and several sensitivity tests to estimate the uncertainty in the ratio of relative risk (RRR) due to the largest contributors to the uncertainty: the radiation weighting factor for neutrons, …

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Assessment Of Targeting Accuracy Of A Low-Energy Stereotactic Radiosurgery Treatment For Age-Related Macular Degeneration, Phillip J. Taddei, Erik Chell, Steven Hansen, Michael Gertner, Wayne D. Newhauser Dec 2010

Assessment Of Targeting Accuracy Of A Low-Energy Stereotactic Radiosurgery Treatment For Age-Related Macular Degeneration, Phillip J. Taddei, Erik Chell, Steven Hansen, Michael Gertner, Wayne D. Newhauser

Faculty Publications

Age-related macular degeneration (AMD), a leading cause of blindness in the United States, is a neovascular disease that may be controlled with radiation therapy. Early patient outcomes of external beam radiotherapy, however, have been mixed. Recently, a novel multimodality treatment was developed, comprising external beam radiotherapy and concomitant treatment with a vascular endothelial growth factor inhibitor. The radiotherapy arm is performed by stereotactic radiosurgery, delivering a 16 Gy dose in the macula (clinical target volume, CTV) using three external low-energy x-ray fields while adequately sparing normal tissues. The purpose of our study was to test the sensitivity of the delivery …

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Adjustment Of The Lateral And Longitudinal Size Of Scanned Proton Beam Spots Using A Pre-Absorber To Optimize Penumbrae And Delivery Efficiency, Uwe Titt, Dragan Mirkovic, Gabriel O. Sawakuchi, Luis A. Perles, Wayne D. Newhauser, Phillip J. Taddei, Radhe Mohan Dec 2010

Adjustment Of The Lateral And Longitudinal Size Of Scanned Proton Beam Spots Using A Pre-Absorber To Optimize Penumbrae And Delivery Efficiency, Uwe Titt, Dragan Mirkovic, Gabriel O. Sawakuchi, Luis A. Perles, Wayne D. Newhauser, Phillip J. Taddei, Radhe Mohan

Faculty Publications

In scanned-beam proton therapy, the beam spot properties, such as the lateral and longitudinal size and the minimum achievable range, are influenced by beam optics, scattering media and drift spaces in the treatment unit. Currently available spot scanning systems offer fewoptions for adjusting these properties. We investigated a method for adjusting the lateral and longitudinal spot size that utilizes downstream plastic pre-absorbers located near a water phantom. The spot size adjustment was characterized usingMonte Carlo simulations of a modified commercial scanned-beam treatment head. Our results revealed that the pre-absorbers can be used to reduce the lateral full width at half …

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Predicted Risks Of Second Malignant Neoplasm Incidence And Mortality Due To Secondary Neutrons In A Girl And Boy Receiving Proton Craniospinal Irradiation, Phillip J. Taddei, Anita Mahajan, Dragan Mirkovic, Rui Zhang, Annelise Giebeler, David Kornguth, Mark Harvey, Shiao Woo, Wayne D. Newhauser Dec 2010

Predicted Risks Of Second Malignant Neoplasm Incidence And Mortality Due To Secondary Neutrons In A Girl And Boy Receiving Proton Craniospinal Irradiation, Phillip J. Taddei, Anita Mahajan, Dragan Mirkovic, Rui Zhang, Annelise Giebeler, David Kornguth, Mark Harvey, Shiao Woo, Wayne D. Newhauser

Faculty Publications

The purpose of this study was to compare the predicted risks of second malignant neoplasm (SMN) incidence and mortality from secondary neutrons for a 9-year-old girl and a 10-year-old boy who received proton craniospinal irradiation (CSI). SMN incidence and mortality from neutrons were predicted from equivalent doses to radiosensitive organs for cranial, spinal and intracranial boost fields. Therapeutic proton absorbed dose and equivalent dose from neutrons were calculated using Monte Carlo simulations. Risks of SMN incidence and mortality in most organs and tissues were predicted by applying risks models from the National Research Council of the National Academies to the …

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Risk Of Second Malignant Neoplasm Following Proton Versus Intensity-Modulated Photon Radiotherapies For Hepatocellular Carcinoma, Phillip J. Taddei, Rebecca M. Howell, Sunil Krishnan, Sarah B. Scarboro, Dragan Mirkovic, Wayne D. Newhauser Dec 2010

Risk Of Second Malignant Neoplasm Following Proton Versus Intensity-Modulated Photon Radiotherapies For Hepatocellular Carcinoma, Phillip J. Taddei, Rebecca M. Howell, Sunil Krishnan, Sarah B. Scarboro, Dragan Mirkovic, Wayne D. Newhauser

Faculty Publications

Hepatocellular carcinoma (HCC), the sixthmost common cancer in theworld, is a global health concern. Radiotherapy for HCC is uncommon, largely because of the likelihood of radiation-induced liver disease, an acute side effect that is often fatal. Proton beam therapy (PBT) and intensity-modulated radiation therapy (IMRT)may offer HCC patients a better option for treating the diseased liver tissue while largely sparing the surrounding tissues, especially the nontumor liver. However, even advanced radiotherapies carry a risk of late effects, including second malignant neoplasms (SMNs). It is unclear whether PBT or IMRT confers less risk of an SMN than the other. The purpose …

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Cross-Reactivity Virtual Profiling Of The Human Kinome By X-React Kin: A Chemical Systems Biology Approach, Michal Brylinski, Jeffrey Skolnick Dec 2010

Cross-Reactivity Virtual Profiling Of The Human Kinome By X-React Kin: A Chemical Systems Biology Approach, Michal Brylinski, Jeffrey Skolnick

Faculty Publications

Many drug candidates fail in clinical development due to their insufficient selectivity that may cause undesired side effects. Therefore, modern drug discovery is routinely supported by computational techniques, which can identify alternate molecular targets with a significant potential for cross-reactivity. In particular, the development of highly selective kinase inhibitors is complicated by the strong conservation of the ATP-binding site across the kinase family. In this paper, we describe X-ReactKIN, a new machine learning approach that extends the modeling and virtual screening of individual protein kinases to a system level in order to construct a cross-reactivity virtual profile for the human …

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Direct Top-Quark Width Measurement At Cdf, T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, J. A. Appel, A. Apresyan, T. Arisawa, A. Artikov, J. Asaadi, W. Ashmanskas, B. Auerbach, A. Aurisano, F. Azfar, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, P. Barria, P. Bartos, M. Bauce, G. Bauer, F. Bedeschi, D. Beecher, S. Behari Dec 2010

Direct Top-Quark Width Measurement At Cdf, T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, J. A. Appel, A. Apresyan, T. Arisawa, A. Artikov, J. Asaadi, W. Ashmanskas, B. Auerbach, A. Aurisano, F. Azfar, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, P. Barria, P. Bartos, M. Bauce, G. Bauer, F. Bedeschi, D. Beecher, S. Behari

Faculty Publications

We present a measurement of the top-quark width in the lepton+jets decay channel of tt̄ events produced in pp̄ collisions at Fermilab's Tevatron collider and collected by the CDF II detector. From a data sample corresponding to 4.3fb⊃-1 of integrated luminosity, we identify 756 candidate events. The top-quark mass and the mass of the hadronically decaying W boson that comes from the top-quark decay are reconstructed for each event and compared with templates of different top-quark widths (Γt) and deviations from nominal jet energy scale (ΔJES) to perform a simultaneous fit for both parameters, where ΔJES is used for the …

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Location, Location, Location: Compartmentalization Of Early Events In Leukotriene Biosynthesis (Journal Of Biological Chemistry (2010) 285, (25109-25114)), Marcia E. Newcomer, Nathaniel C. Gilbert Dec 2010

Location, Location, Location: Compartmentalization Of Early Events In Leukotriene Biosynthesis (Journal Of Biological Chemistry (2010) 285, (25109-25114)), Marcia E. Newcomer, Nathaniel C. Gilbert

Faculty Publications

No abstract provided.

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Mechanism Of Fiber Assembly: Treatment Of Aβ Peptide Aggregation With A Coarse-Grained United-Residue Force Field, Ana Rojas, Adam Liwo, Dana Browne, Harold A. Scheraga Dec 2010

Mechanism Of Fiber Assembly: Treatment Of Aβ Peptide Aggregation With A Coarse-Grained United-Residue Force Field, Ana Rojas, Adam Liwo, Dana Browne, Harold A. Scheraga

Faculty Publications

The growth mechanism of β-amyloid (Aβ) peptide fibrils was studied by a physics-based coarse-grained united-residue model and molecular dynamics (MD) simulations. To identify the mechanism of monomer addition to an Aβ1-40 fibril, we placed an unstructured monomer at a distance of 20 Å from a fibril template and allowed it to interact freely with the latter. The monomer was not biased towards fibril conformation by either the force field or the MD algorithm. With the use of a coarse-grained model with replica-exchange molecular dynamics, a longer timescale was accessible, making it possible to observe how the monomers probe different binding …

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Reproductive Status Regulates Expression Of Sex Steroid And Gnrh Receptors In The Olfactory Bulb, Karen P. Maruska, Russell D. Fernald Dec 2010

Reproductive Status Regulates Expression Of Sex Steroid And Gnrh Receptors In The Olfactory Bulb, Karen P. Maruska, Russell D. Fernald

Faculty Publications

Neuromodulators including gonadotropin-releasing hormone (GnRH) and sex steroids help integrate an animal's internal physiological state with incoming external cues, and can have profound effects on the processing of behaviorally relevant information, particularly from the olfactory system. While GnRH and steroid receptors are present in olfactory processing regions across vertebrates, little is known about whether their expression levels change with internal physiological state or external social cues. We used qRT-PCR to measure mRNA levels of two GnRH receptors (GnRH-R1, GnRH-R2), five sex steroid receptors (estrogen receptors: ERα, ERβa, ERβb; androgen receptors: ARα, ARβ), and aromatase in the olfactory bulb of the …

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Dynamical Symmetries In Contemporary Nuclear Structure Applications, A. I. Georgieva, M. I. Ivanov, S. L. Drenska, K. D. Sviratcheva, J. P. Draayer Dec 2010

Dynamical Symmetries In Contemporary Nuclear Structure Applications, A. I. Georgieva, M. I. Ivanov, S. L. Drenska, K. D. Sviratcheva, J. P. Draayer

Faculty Publications

In terms of group theory-the language of symmetries, the concept of spontaneous symmetry breaking is represented in terms of chains of group-subgroup structures that define the dynamical symmetry of the system under consideration. This framework enables exact analytic solutions of the associated eigenvalue problems. We review two types of applications of dynamical symmetries in contemporary theoretical nuclear structure physics: first for a classification of the many-body systems under consideration, with respect to an important characteristic of their behavior; and second for the creation of exactly solvable algebraic models that describe specific aspects of this behavior. This is illustrated with the …

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Measurement Of The Ww+Wz Production Cross Section Using A Matrix Element Technique In Lepton+Jets Events, T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, J. A. Appel, A. Apresyan, T. Arisawa, A. Artikov, J. Asaadi, W. Ashmanskas, B. Auerbach, A. Aurisano, F. Azfar, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, P. Barria, P. Bartos, M. Bauce, G. Bauer, F. Bedeschi, D. Beecher, S. Behari Dec 2010

Measurement Of The Ww+Wz Production Cross Section Using A Matrix Element Technique In Lepton+Jets Events, T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, J. A. Appel, A. Apresyan, T. Arisawa, A. Artikov, J. Asaadi, W. Ashmanskas, B. Auerbach, A. Aurisano, F. Azfar, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, P. Barria, P. Bartos, M. Bauce, G. Bauer, F. Bedeschi, D. Beecher, S. Behari

Faculty Publications

We present a measurement of the WW+WZ production cross section observed in a final state consisting of an identified electron or muon, two jets, and missing transverse energy. The measurement is carried out in a data sample corresponding to up to 4.6fb⊃-1 of integrated luminosity at √s=1.96TeV collected by the CDF II detector. Matrix element calculations are used to separate the diboson signal from the large backgrounds. The WW+WZ cross section is measured to be 17.4±3.3pb in agreement with standard model predictions. A fit to the dijet invariant mass spectrum yields a compatible cross section measurement. © 2010 The American …

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Item Analysis Of The Grammar Subtests Of The Cdi: Words & Sentences For African American Children, Zainab Maqsood Dec 2010

Item Analysis Of The Grammar Subtests Of The Cdi: Words & Sentences For African American Children, Zainab Maqsood

Honors Theses

No abstract provided.

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Making
 Trifles
 Of 
Terrors, Ellen Ogden Dec 2010

Making
 Trifles
 Of 
Terrors, Ellen Ogden

Honors Theses

No abstract provided.

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The Deda Protein Family In Selected Bacterial Species, James Cox Dec 2010

The Deda Protein Family In Selected Bacterial Species, James Cox

Honors Theses

No abstract provided.

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Application Of A Fast Proton Dose Calculation Algorithm To A Thorax Geometry, Pablo P. Yepes, Travis Brannan, Jessie Huang, Dragan Mirkovic, Wayne D. Newhauser, Phillip J. Taddei, Uwe Titt Dec 2010

Application Of A Fast Proton Dose Calculation Algorithm To A Thorax Geometry, Pablo P. Yepes, Travis Brannan, Jessie Huang, Dragan Mirkovic, Wayne D. Newhauser, Phillip J. Taddei, Uwe Titt

Faculty Publications

Treatment planning in proton therapy requires the calculation of absorbed dose distributions on beam shaping components and the patient anatomy. Analytical pencil-beam dose algorithms commonly used are not always accurate enough. The Monte Carlo approach is more accurate but extremely computationally intensive. The Fast Dose Calculator, a track-repeating algorithm, has been proposed as an alternative fast and accurate dose calculation. In this work FDC is applied to a proton therapy patient thoracic anatomy. © 2010 Published by Elsevier Ltd. All rights reserved.

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Accurate Quantification Of Seasonal Rainfall And Associated Climate-Wildfire Relationships, Matthew G. Slocum, William J. Platt, Brian Beckage, Steve L. Orzell, Wayne Taylor Dec 2010

Accurate Quantification Of Seasonal Rainfall And Associated Climate-Wildfire Relationships, Matthew G. Slocum, William J. Platt, Brian Beckage, Steve L. Orzell, Wayne Taylor

Faculty Publications

Wildfires are often governed by rapid changes in seasonal rainfall. Therefore, measuring seasonal rainfall on a temporally finescale should facilitate the prediction of wildfire regimes. To explore this hypothesis, daily rainfall data over a 58-yr period (1950-2007) in south-central Florida were transformed into cumulative rainfall anomalies (CRAs). This transformation allowed precise estimation of onset dates and durations of the dry and wet seasons, as well as a number of other variables characterizing seasonal rainfall. These variables were compared with parameters that describe ENSO and a wildfire regimeinthe region (at the Avon Park Air Force Range). Onset dates and durations were …

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The Electronic Structure Of Li2b4o7(110) And Li2b4o7(100), D Wooten, I Ketsman, J Xiao, Y B. Losovyj, D Wooten, J Mcclory, Y V. Burak, V T. Adamiv, J M. Brown, P A. Dowben Dec 2010

The Electronic Structure Of Li2b4o7(110) And Li2b4o7(100), D Wooten, I Ketsman, J Xiao, Y B. Losovyj, D Wooten, J Mcclory, Y V. Burak, V T. Adamiv, J M. Brown, P A. Dowben

Faculty Publications

The band structure of Li2B4O7(100) and Li2B4O7(110) was experimentally determined using a combination of angle-resolved photoemission and angle-resolved inverse photoemission spectroscopies. The experimental band gap depends on crystallographic direction but exceeds 8.8 eV, while the bulk band gap is believed to be in the vicinity of 9.8 eV, in qualitative agreement with expectations. The occupied bulk band structure indicates relatively large values for the hole mass; with the hole mass as significantly larger than that of the electron mass derived from the unoccupied band structure. The Li2B4O7(110) surface is characterized by a very light mass image potential state and a …

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