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2016

Louisiana State University

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Siah2 Protein Mediates Early Events In Commitment To An Adipogenic Pathway, Gail Kilroy, David H. Burk, Z. Elizabeth Floyd Dec 2016

Siah2 Protein Mediates Early Events In Commitment To An Adipogenic Pathway, Gail Kilroy, David H. Burk, Z. Elizabeth Floyd

Faculty Publications

© 2016 by The American Society for Biochemistry and Molecular Biology, Inc. Adipose tissue expansion occurs by increasing the size of existing adipocytes or by increasing the number of adipocytes via adipogenesis. Adipose tissue dysfunction in obesity is associated with adipocyte hypertrophy and impaired adipogenesis. We recently demonstrated that deletion of the ubiquitin ligase Siah2 is associated with enlarged adipocytes in lean or obese mice. In this study, we find that adipogenesis is impaired in 3T3-L1 preadipocytes stably transfected with Siah2 shRNA and that overexpression of Siah2 in non-precursor fibroblasts promotes adipogenesis. In the 3T3-L1 model, loss of Siah2 is …

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Ultrahigh-Energy Neutrino Follow-Up Of Gravitational Wave Events Gw150914 And Gw151226 With The Pierre Auger Observatory, A. Aab, P. Abreu, M. Aglietta, I. Al Samarai, I. F.M. Albuquerque, I. Allekotte, A. Almela, J. Alvarez Castillo, J. Alvarez-Muñiz, M. Ambrosio, G. A. Anastasi, L. Anchordoqui, B. Andrada, S. Andringa, C. Aramo, F. Arqueros, N. Arsene, H. Asorey, P. Assis, J. Aublin, G. Avila, A. M. Badescu, A. Balaceanu, R. J. Barreira Luz, C. Baus, J. J. Beatty, K. H. Becker, J. A. Bellido, C. Berat, M. E. Bertaina, X. Bertou, P. L. Biermann, P. Billoir Dec 2016

Ultrahigh-Energy Neutrino Follow-Up Of Gravitational Wave Events Gw150914 And Gw151226 With The Pierre Auger Observatory, A. Aab, P. Abreu, M. Aglietta, I. Al Samarai, I. F.M. Albuquerque, I. Allekotte, A. Almela, J. Alvarez Castillo, J. Alvarez-Muñiz, M. Ambrosio, G. A. Anastasi, L. Anchordoqui, B. Andrada, S. Andringa, C. Aramo, F. Arqueros, N. Arsene, H. Asorey, P. Assis, J. Aublin, G. Avila, A. M. Badescu, A. Balaceanu, R. J. Barreira Luz, C. Baus, J. J. Beatty, K. H. Becker, J. A. Bellido, C. Berat, M. E. Bertaina, X. Bertou, P. L. Biermann, P. Billoir

Faculty Publications

On September 14, 2015 the Advanced LIGO detectors observed their first gravitational wave (GW) transient GW150914. This was followed by a second GW event observed on December 26, 2015. Both events were inferred to have arisen from the merger of black holes in binary systems. Such a system may emit neutrinos if there are magnetic fields and disk debris remaining from the formation of the two black holes. With the surface detector array of the Pierre Auger Observatory we can search for neutrinos with energy Eν above 100 PeV from pointlike sources across the sky with equatorial declination from about …

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Single Molecule Mass Measurements And Mass Spectrometry, Kermit K. Murray Dec 2016

Single Molecule Mass Measurements And Mass Spectrometry, Kermit K. Murray

Faculty Publications

No abstract provided.

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Generalized Multiband Typical Medium Dynamical Cluster Approximation: Application To (Ga,Mn)N, Yi Zhang, R. Nelson, Elisha Siddiqui, K. M. Tam, U. Yu, T. Berlijn, W. Ku, N. S. Vidhyadhiraja, J. Moreno, M. Jarrell Dec 2016

Generalized Multiband Typical Medium Dynamical Cluster Approximation: Application To (Ga,Mn)N, Yi Zhang, R. Nelson, Elisha Siddiqui, K. M. Tam, U. Yu, T. Berlijn, W. Ku, N. S. Vidhyadhiraja, J. Moreno, M. Jarrell

Faculty Publications

We generalize the multiband typical medium dynamical cluster approximation and the formalism introduced by Blackman, Esterling, and Berk so that it can deal with localization in multiband disordered systems with both diagonal and off-diagonal disorder with complicated potentials. We also introduce an ansatz for the momentum-resolved typical density of states that greatly improves the numerical stability of the method while preserving the independence of scattering events at different frequencies. Starting from the first-principles effective Hamiltonian, we apply this method to the diluted magnetic semiconductor Ga1-xMnxN, and find the impurity band is completely localized for Mn concentrations x<0.03, while for 0.03

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New Prediction Approach For Stabilizing Time-Varying Systems Under Time-Varying Input Delay, Frederic Mazenc, Michael Malisoff Dec 2016

New Prediction Approach For Stabilizing Time-Varying Systems Under Time-Varying Input Delay, Frederic Mazenc, Michael Malisoff

Faculty Publications

We provide a new sequential predictors approach for the exponential stabilization of linear time-varying systems with pointwise time-varying input delays. Our method circumvents the problem of constructing and estimating distributed terms in the stabilizing control laws, and allows arbitrarily large input delay bounds. We illustrate our method using a pendulum dynamics.

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New Bounded Backstepping Control Designs For Time-Varying Systems Under Converging-Input-Converging-State Conditions, Frederic Mazenc, Michael Malisoff, Jerome Weston Dec 2016

New Bounded Backstepping Control Designs For Time-Varying Systems Under Converging-Input-Converging-State Conditions, Frederic Mazenc, Michael Malisoff, Jerome Weston

Faculty Publications

We provide new asymptotically stabilizing backstepping controls for time-varying systems in a partially linear form. Instead of measuring the full current state, our main feedback design uses several time lagged values of a function of the state of the nonlinear subsystem, and has no distributed terms. Other advantages are that we do not require differentiability of the available nominal controls for the nonlinear subsystems, and that our controls do not contain Lie derivatives. This improves on a recent work in Automatica that covered the special case where the linear part has one integrator, since we now allow an arbitrary number …

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Episode Of Intense Chemical Weathering During The Termination Of The 635 Ma Marinoan Glaciation, Kang Jun Huang, Fang Zhen Teng, Bing Shen, Shuhai Xiao, Xianguo Lang, Hao Ran Ma, Yong Fu, Yongbo Peng Dec 2016

Episode Of Intense Chemical Weathering During The Termination Of The 635 Ma Marinoan Glaciation, Kang Jun Huang, Fang Zhen Teng, Bing Shen, Shuhai Xiao, Xianguo Lang, Hao Ran Ma, Yong Fu, Yongbo Peng

Faculty Publications

Cryogenian (∼720-635 Ma) global glaciations (the snowball Earth) represent the most extreme ice ages in Earth's history. The termination of these snowball Earth glaciations is marked by the global precipitation of cap carbonates, which are interpreted to have been driven by intense chemical weathering on continents. However, direct geochemical evidence for the intense chemical weathering in the aftermath of snowball glaciations is lacking. Here, we report Mg isotopic data from the terminal Cryogenian or Marinoan-age Nantuo Formation and the overlying cap carbonate of the basal Doushantuo Formation in South China. A positive excursion of extremely high δ26Mg values (+0.56 to …

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Exotic Looped Trajectories Of Photons In Three-Slit Interference, Omar S. Magaña-Loaiza, Israel De Leon, Mohammad Mirhosseini, Robert Fickler, Akbar Safari, Uwe Mick, Brian Mcintyre, Peter Banzer, Brandon Rodenburg, Gerd Leuchs, Robert W. Boyd Dec 2016

Exotic Looped Trajectories Of Photons In Three-Slit Interference, Omar S. Magaña-Loaiza, Israel De Leon, Mohammad Mirhosseini, Robert Fickler, Akbar Safari, Uwe Mick, Brian Mcintyre, Peter Banzer, Brandon Rodenburg, Gerd Leuchs, Robert W. Boyd

Faculty Publications

The validity of the superposition principle and of Born's rule are well-accepted tenants of quantum mechanics. Surprisingly, it has been predicted that the intensity pattern formed in a three-slit experiment is seemingly in contradiction with the most conventional form of the superposition principle when exotic looped trajectories are taken into account. However, the probability of observing such paths is typically very small, thus rendering them extremely difficult to measure. Here we confirm the validity of Born's rule and present the first experimental observation of exotic trajectories as additional paths for the light by directly measuring their contribution to the formation …

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Sub-Cycle Ionization Dynamics Revealed By Trajectory Resolved, Elliptically-Driven High-Order Harmonic Generation, E. W. Larsen, S. Carlström, E. Lorek, C. M. Heyl, D. Paleček, K. J. Schafer, A. L'Huillier, D. Zigmantas, J. Mauritsson Dec 2016

Sub-Cycle Ionization Dynamics Revealed By Trajectory Resolved, Elliptically-Driven High-Order Harmonic Generation, E. W. Larsen, S. Carlström, E. Lorek, C. M. Heyl, D. Paleček, K. J. Schafer, A. L'Huillier, D. Zigmantas, J. Mauritsson

Faculty Publications

The sub-cycle dynamics of electrons driven by strong laser fields is central to the emerging field of attosecond science. We demonstrate how the dynamics can be probed through high-order harmonic generation, where different trajectories leading to the same harmonic order are initiated at different times, thereby probing different field strengths. We find large differences between the trajectories with respect to both their sensitivity to driving field ellipticity and resonant enhancement. To accurately describe the ellipticity dependence of the long trajectory harmonics we must include a sub-cycle change of the initial velocity distribution of the electron and its excursion time. The …

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Phase Sensitivity At The Heisenberg Limit In An Su(1,1) Interferometer Via Parity Detection, Dong Li, Bryan T. Gard, Yang Gao, Chun Hua Yuan, Weiping Zhang, Hwang Lee, Jonathan P. Dowling Dec 2016

Phase Sensitivity At The Heisenberg Limit In An Su(1,1) Interferometer Via Parity Detection, Dong Li, Bryan T. Gard, Yang Gao, Chun Hua Yuan, Weiping Zhang, Hwang Lee, Jonathan P. Dowling

Faculty Publications

We theoretically investigate the phase sensitivity with parity detection on an SU(1,1) interferometer with a coherent state combined with a squeezed vacuum state. This interferometer is formed with two parametric amplifiers for beam splitting and recombination instead of beam splitters. We show that the sensitivity of phase estimation approaches the Heisenberg limit and give the corresponding optimal condition. Moreover, we derive the quantum Cramér-Rao bound of the SU(1,1) interferometer.

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Faculty Senate Newsletter, December 2016, Louisiana State University And Agricultural & Mechanical College Dec 2016

Faculty Senate Newsletter, December 2016, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Message from President: Ingeniously positioned in a way that can only be accomplished through centuries of cultural evolution, Christmas occurs near the longest, darkest night of the year so as to suggest that even a small ray of light shines brightest when piercing the gloom. However severe the shortage of light around the yuletide, it never rivals the acute dimness of that social counterpart to night, blacklisting. With the advent of web sites such as Professor Watch List, an organization that stigmatizes dissenting professors and encourages students to reconnoiter them, blacklisting is much in the news these days, and rightly …

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Constraining Ribbon Rock Dolomitization By Mg Isotopes: Implications For The ‘Dolomite Problem’, Fang Bing Li, Fang Zhen Teng, Ji Tao Chen, Kang Jun Huang, Shui Jiong Wang, Xian Guo Lang, Hao Ran Ma, Yong Bo Peng, Bing Shen Dec 2016

Constraining Ribbon Rock Dolomitization By Mg Isotopes: Implications For The ‘Dolomite Problem’, Fang Bing Li, Fang Zhen Teng, Ji Tao Chen, Kang Jun Huang, Shui Jiong Wang, Xian Guo Lang, Hao Ran Ma, Yong Bo Peng, Bing Shen

Faculty Publications

© 2016 Elsevier B.V. Modern dolomite formation is conditional and restricted in specific environmental and geochemical conditions, accordingly cannot be used as the analog of ancient dolostones, which normally have platform-wide distribution. The key to understand ancient dolostone formation is to find a dolomitization process that is independent of physical/geochemical environments. It is well-known that ribbon rock (one type of calcareous rhythmites, sensu stricto referring to the alternating limestone and marlstone layers or the limestone-marl alternations) that are deposited in nearly all marine environments throughout the Earth's history, are exclusively, though normally partially, dolomitized. Thus, understanding ribbon rock dolomitization may …

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Comment On “Sr-Nd Isotope Composition And Clay Mineral Assemblages In Eolian Dust From The Central Philippine Sea Over The Last 600kyr: Implications For The Transport Mechanism Of Asian Dust” By Seo Et Al., Zhaokai Xu, Tiegang Li, Peter D. Clift, Shiming Wan, Mingjiang Cai, Hongjin Chen Dec 2016

Comment On “Sr-Nd Isotope Composition And Clay Mineral Assemblages In Eolian Dust From The Central Philippine Sea Over The Last 600kyr: Implications For The Transport Mechanism Of Asian Dust” By Seo Et Al., Zhaokai Xu, Tiegang Li, Peter D. Clift, Shiming Wan, Mingjiang Cai, Hongjin Chen

Faculty Publications

No abstract provided.

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Real-Space Mean-Field Theory Of A Spin-1 Bose Gas In Synthetic Dimensions, Hilary M. Hurst, Justin H. Wilson, J. H. Pixley, I. B. Spielman, Stefan S. Natu Dec 2016

Real-Space Mean-Field Theory Of A Spin-1 Bose Gas In Synthetic Dimensions, Hilary M. Hurst, Justin H. Wilson, J. H. Pixley, I. B. Spielman, Stefan S. Natu

Faculty Publications

The internal degrees of freedom provided by ultracold atoms provide a route for realizing higher dimensional physics in systems with limited spatial dimensions. Nonspatial degrees of freedom in these systems are dubbed "synthetic dimensions." This connection is useful from an experimental standpoint but complicated by the fact that interactions alter the condensate ground state. Here we use the Gross-Pitaevskii equation to study the ground-state properties of a spin-1 Bose gas under the combined influence of an optical lattice, spatially varying spin-orbit coupling, and interactions at the mean-field level. The associated phases depend on the sign of the spin-dependent interaction parameter …

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Faculty Senate Resolution 16-14, Louisiana State University And Agricultural & Mechanical College Dec 2016

Faculty Senate Resolution 16-14, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Faculty Senate Resolution on renaming the grievance committee, adopted on January 19, 2017.

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Faculty Senate Resolution 16-15, Louisiana State University And Agricultural & Mechanical College Dec 2016

Faculty Senate Resolution 16-15, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Faculty Senate Resolution regarding the professor watchlist, adopted on February 22, 2017.

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The Rate Of Binary Black Hole Mergers Inferred From Advanced Ligo Observations Surrounding Gw150914, B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, B. Allen, A. Allocca, P. A. Altin, S. B. Anderson, W. G. Anderson, K. Arai, M. C. Araya, C. C. Arceneaux, J. S. Areeda, N. Arnaud, K. G. Arun, S. Ascenzi, G. Ashton, M. Ast Dec 2016

The Rate Of Binary Black Hole Mergers Inferred From Advanced Ligo Observations Surrounding Gw150914, B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, B. Allen, A. Allocca, P. A. Altin, S. B. Anderson, W. G. Anderson, K. Arai, M. C. Araya, C. C. Arceneaux, J. S. Areeda, N. Arnaud, K. G. Arun, S. Ascenzi, G. Ashton, M. Ast

Faculty Publications

A transient gravitational-wave signal, GW150914, was identified in the twin Advanced LIGO detectors on 2015 September 2015 at 09:50:45 UTC. To assess the implications of this discovery, the detectors remained in operation with unchanged configurations over a period of 39 days around the time of the signal. At the detection statistic threshold corresponding to that observed for GW150914, our search of the 16 days of simultaneous two-detector observational data is estimated to have a false-alarm rate (FAR) of <4.9 × 10-6 yr-1, yielding a p-value for GW150914 of <2 × 10-7. Parameter estimation follow-up on this trigger identifies its source as a binary black hole (BBH) merger with component masses (m1, m2 ) = ( 36-4+5, 29-4+4 ) M⊙ at redshift = z = 0.09-0.04+0.03 (median and 90% credible range). Here, we report on the constraints these observations place on the rate of BBH coalescences. Considering only GW150914, assuming that all BBHs in the universe have the same masses and spins as this event, imposing a search FAR threshold of 1 per 100 years, and assuming that the BBH merger rate is constant in the comoving frame, we infer a 90% credible range of merger rates between 2-53 Gpc-3 yr-1 (comoving frame). Incorporating all search triggers that pass a much lower threshold while accounting for the uncertainty in the astrophysical origin of each trigger, we estimate a higher rate, ranging from 13-600 Gpc-3yr-1 depending on assumptions about the BBH mass distribution. All together, our various rate estimates fall in the conservative range 2-600 Gpc-3 yr1.

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Studying Soft-Matter And Biological Systems Over A Wide Length-Scale From Nanometer And Micrometer Sizes At The Small-Angle Neutron Diffractometer Kws-2, Aurel Radulescu, Noemi Kinga Szekely, Marie Sousai Appavou, Vitaliy Pipich, Thomas Kohnke, Vladimir Ossovyi, Simon Staringer, Gerald J. Schneider, Matthias Amann, Bo Zhang-Haagen, Georg Brandl, Matthias Drochner, Ralf Engels, Romuald Hanslik, Günter Kemmerling Dec 2016

Studying Soft-Matter And Biological Systems Over A Wide Length-Scale From Nanometer And Micrometer Sizes At The Small-Angle Neutron Diffractometer Kws-2, Aurel Radulescu, Noemi Kinga Szekely, Marie Sousai Appavou, Vitaliy Pipich, Thomas Kohnke, Vladimir Ossovyi, Simon Staringer, Gerald J. Schneider, Matthias Amann, Bo Zhang-Haagen, Georg Brandl, Matthias Drochner, Ralf Engels, Romuald Hanslik, Günter Kemmerling

Faculty Publications

© 2016 Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. The KWS-2 SANS diffractometer is dedicated to the investigation of soft matter and biophysical systems covering a wide length scale, from nm to µm. The instrument is optimized for the exploration of the wide momentum transfer Q range between 1x10-4 and 0.5 Å-1 by combining classical pinhole, focusing (with lenses), and time-of-flight (with chopper) methods, while simultaneously providing high-neutron intensities with an adjustable resolution. Because of its ability to adjust the intensity and the resolution within wide limits during the experiment, combined with the possibility to equip specific sample environments and ancillary …

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Enantiomer Signature And Carbon Isotope Evidence For The Migration And Transformation Of Ddts In Arable Soils Across China, Lili Niu, Chao Xu, Siyu Zhu, Huiming Bao, Yang Xu, Hongyi Li, Zhijian Zhang, Xichang Zhang, Jiguo Qiu, Weiping Liu Dec 2016

Enantiomer Signature And Carbon Isotope Evidence For The Migration And Transformation Of Ddts In Arable Soils Across China, Lili Niu, Chao Xu, Siyu Zhu, Huiming Bao, Yang Xu, Hongyi Li, Zhijian Zhang, Xichang Zhang, Jiguo Qiu, Weiping Liu

Faculty Publications

© The Author(s) 2016. Due to the adverse impact of DDTs on ecosystems and humans, a full fate assessment deems a comprehensive study on their occurrence in soils over a large region. Through a sampling campaign across China, we measured the concentrations, enantiomeric fractions (EFs), compound-specific carbon isotope composition of DDT and its metabolites, and the microbial community in related arable soils. The geographically total DDT concentrations are higher in eastern than western China. The EFs and δ13 C of o,p'-DDT in soils from western China show smaller deviations from those of racemic/standard compound, indicating the DDT residues there mainly …

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Enantiomer Signature And Carbon Isotope Evidence For The Migration And Transformation Of Ddts In Arable Soils Across China, Lili Niu, Chao Xu, Siyu Zhu, Huiming Bao, Yang Xu, Hongyi Li, Zhijian Zhang, Xichang Zhang, Jiguo Qiu, Weiping Liu Dec 2016

Enantiomer Signature And Carbon Isotope Evidence For The Migration And Transformation Of Ddts In Arable Soils Across China, Lili Niu, Chao Xu, Siyu Zhu, Huiming Bao, Yang Xu, Hongyi Li, Zhijian Zhang, Xichang Zhang, Jiguo Qiu, Weiping Liu

Faculty Publications

© The Author(s) 2016. Due to the adverse impact of DDTs on ecosystems and humans, a full fate assessment deems a comprehensive study on their occurrence in soils over a large region. Through a sampling campaign across China, we measured the concentrations, enantiomeric fractions (EFs), compound-specific carbon isotope composition of DDT and its metabolites, and the microbial community in related arable soils. The geographically total DDT concentrations are higher in eastern than western China. The EFs and δ13 C of o,p'-DDT in soils from western China show smaller deviations from those of racemic/standard compound, indicating the DDT residues there mainly …

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Transcription Factor Reb1 Is Required For Proper Transcriptional Start Site Usage At The Divergently Transcribed Tfc6-Esc2 Locus In Saccharomyces Cerevisiae, Qing Wang, David Donze Dec 2016

Transcription Factor Reb1 Is Required For Proper Transcriptional Start Site Usage At The Divergently Transcribed Tfc6-Esc2 Locus In Saccharomyces Cerevisiae, Qing Wang, David Donze

Faculty Publications

© 2016 Elsevier B.V. Eukaryotic promoters generally contain nucleosome depleted regions near their transcription start sites. In the model organism Saccharomyces cerevisiae, these regions are adjacent to binding sites for general regulatory transcription factors, and the Reb1 protein is commonly bound to promoter DNA near such regions. The yeast TFC6 promoter is a unique RNA polymerase II promoter in that it is autoregulated by its own gene product Tfc6p, which is part of the RNA polymerase III transcription factor complex TFIIIC. We previously demonstrated that mutation of a potential Reb1 binding site adjacent to the TFIIIC binding site in the …

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Multilevel Perspective On High-Order Harmonic Generation In Solids, Mengxi Wu, Dana A. Browne, Kenneth J. Schafer, Mette B. Gaarde Dec 2016

Multilevel Perspective On High-Order Harmonic Generation In Solids, Mengxi Wu, Dana A. Browne, Kenneth J. Schafer, Mette B. Gaarde

Faculty Publications

We investigate high-order harmonic generation in a solid, modeled as a multilevel system dressed by a strong infrared laser field. We show that the cutoff energies and the relative strengths of the multiple plateaus that emerge in the harmonic spectrum can be understood both qualitatively and quantitatively by considering a combination of adiabatic and diabatic processes driven by the strong field. Such a model was recently used to interpret the multiple plateaus exhibited in harmonic spectra generated by solid argon and krypton [G. Ndabashimiye, Nature 534, 520 (2016)NATUAS0028-083610.1038/nature17660]. We also show that when the multilevel system originates from the Bloch …

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Weight Management Delivered Through An App, May Help Resolve Body Image Dissatisfaction In Women Enrolled In Wic, Alexis Ariel O’Connell Dec 2016

Weight Management Delivered Through An App, May Help Resolve Body Image Dissatisfaction In Women Enrolled In Wic, Alexis Ariel O’Connell

Honors Theses

No abstract provided.

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Local Theory For Mott-Anderson Localization, Sudeshna Sen, Hanna Terletska, Juana Moreno, Sn Vidhyadhiraja, Mark Jarrell Dec 2016

Local Theory For Mott-Anderson Localization, Sudeshna Sen, Hanna Terletska, Juana Moreno, Sn Vidhyadhiraja, Mark Jarrell

Faculty Publications

The paramagnetic metallic phase of the Anderson-Hubbard model (AHM) is investigated using a nonperturbative local moment approach within the framework of dynamical mean-field theory with a typical medium. Our focus is on the breakdown of the metallic phase near the metal-insulators transition as seen in the single-particle spectra, scattering rates, and the associated distribution of Kondo scales. We demonstrate the emergence of a universal, underlying low-energy scale, TKpeak. This lies close to the peak of the distribution of Kondo scales obtained within the metallic phase of the paramagnetic AHM. Spectral dynamics for energies ωTKpeak display Fermi liquid universality crossing over …

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Evolutionary Innovation And Diversification Of Carotenoid-Based Pigmentation In Finches, Russell A. Ligon, Richard K. Simpson, Nicholas A. Mason, Geoffrey E. Hill, Kevin J. Mcgraw Dec 2016

Evolutionary Innovation And Diversification Of Carotenoid-Based Pigmentation In Finches, Russell A. Ligon, Richard K. Simpson, Nicholas A. Mason, Geoffrey E. Hill, Kevin J. Mcgraw

Faculty Publications

© 2016 The Author(s). Evolution © 2016 The Society for the Study of Evolution. The ornaments used by animals to mediate social interactions are diverse, and by reconstructing their evolutionary pathways we can gain new insights into the mechanisms underlying ornamental innovation and variability. Here, we examine variation in plumage carotenoids among the true finches (Aves: Fringillidae) using biochemical and comparative phylogenetic analyses to reconstruct the evolutionary history of carotenoid states and evaluate competing models of carotenoid evolution. Our comparative analyses reveal that the most likely ancestor of finches used dietary carotenoids as yellow plumage colorants, and that the ability …

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Spatially And Spectrally Resolved Quantum Path Interference With Chirped Driving Pulses, Stefanos Carlström, Jana Precliková, Eleonora Lorek, Esben Witting Larsen, Christoph M. Heyl, David Paleček, Donatas Zigmantas, Kenneth J. Schafer, Mette B. Gaarde, Johan Mauritsson Dec 2016

Spatially And Spectrally Resolved Quantum Path Interference With Chirped Driving Pulses, Stefanos Carlström, Jana Precliková, Eleonora Lorek, Esben Witting Larsen, Christoph M. Heyl, David Paleček, Donatas Zigmantas, Kenneth J. Schafer, Mette B. Gaarde, Johan Mauritsson

Faculty Publications

Wemeasure spectrally and spatially resolved high-order harmonics generated in argon using chirped multi-cycle laser pulses. Using a stable, high-repetition rate laser we observe detailed interference structures in the far-field. The structures are of two kinds; off-axis interference from the long trajectory only and on-axis interference including the short and long trajectories. The former is readily visible in the far-field spectrum, modulating both the spectral and spatial profile. To access the latter, we vary the chirp of the fundamental, imparting different phases on the different trajectories, thereby changing their relative phase. Using this method together with an analytical model, we are …

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Geodesic Completeness And The Lack Of Strong Singularities In Effective Loop Quantum Kantowski-Sachs Spacetime, Sahil Saini, Parampreet Singh Dec 2016

Geodesic Completeness And The Lack Of Strong Singularities In Effective Loop Quantum Kantowski-Sachs Spacetime, Sahil Saini, Parampreet Singh

Faculty Publications

Resolution of singularities in the Kantowski-Sachs model due to non-perturbative quantum gravity effects is investigated. Using the effective spacetime description for the improved dynamics version of loop quantum Kantowski-Sachs spacetimes, we show that even though expansion and shear scalars are universally bounded, there can exist events where curvature invariants can diverge. However, such events can occur only for very exotic equations of state when pressure or derivatives of energy density with respect to triads become infinite at a finite energy density. In all other cases curvature invariants are proved to remain finite for any evolution in finite proper time. We …

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Campaign 9 Of The K2 Mission: Observational Parameters, Scientific Drivers, And Community Involvement For A Simultaneous Space-And Ground-Based Microlensing Survey, Calen B. Henderson, Radosław Poleski, Matthew Penny, Rachel A. Street, David P. Bennett, David W. Hogg, B. Scott Gaudi, W. Zhu, T. Barclay, G. Barentsen, S. B. Howell, F. Mullally, A. Udalski, M. K. Szymański, J. Skowron, P. Mróz, S. Kozłowski, Wyrzykowski, P. Pietrukowicz, I. Soszyński, K. Ulaczyk, M. Pawlak, T. Sumi, F. Abe, Y. Asakura, R. K. Barry, A. Bhattacharya, I. A. Bond, M. Donachie, M. Freeman, A. Fukui, Y. Hirao, Y. Itow Dec 2016

Campaign 9 Of The K2 Mission: Observational Parameters, Scientific Drivers, And Community Involvement For A Simultaneous Space-And Ground-Based Microlensing Survey, Calen B. Henderson, Radosław Poleski, Matthew Penny, Rachel A. Street, David P. Bennett, David W. Hogg, B. Scott Gaudi, W. Zhu, T. Barclay, G. Barentsen, S. B. Howell, F. Mullally, A. Udalski, M. K. Szymański, J. Skowron, P. Mróz, S. Kozłowski, Wyrzykowski, P. Pietrukowicz, I. Soszyński, K. Ulaczyk, M. Pawlak, T. Sumi, F. Abe, Y. Asakura, R. K. Barry, A. Bhattacharya, I. A. Bond, M. Donachie, M. Freeman, A. Fukui, Y. Hirao, Y. Itow

Faculty Publications

K2ʼs Campaign 9 (K2C9) will conduct a ∼3.7 deg2 survey toward the Galactic bulge from 2016 April 22 through July 2 that will leverage the spatial separation between K2 and the Earth to facilitate measurement of the microlens parallax πE for ≳170 microlensing events. These will include several that are planetary in nature as well as many short-timescale microlensing events, which are potentially indicative of free-floating planets (FFPs). These satellite parallax measurements will in turn allow for the direct measurement of the masses of and distances to the lensing systems. In this article we provide an overview of the K2C9 …

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Priming Of Narrative Language In Young Adults, Rachel M. Crowder Dec 2016

Priming Of Narrative Language In Young Adults, Rachel M. Crowder

Honors Theses

No abstract provided.

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Capsular Polysaccharide Production And Serum Survival Of Vibrio Vulnificus Are Dependent On Antitermination Control By Rfah, Shana B. Garrett, Katherine L. Garrison-Schilling, Jeffrey T. Cooke, Gregg S. Pettis Dec 2016

Capsular Polysaccharide Production And Serum Survival Of Vibrio Vulnificus Are Dependent On Antitermination Control By Rfah, Shana B. Garrett, Katherine L. Garrison-Schilling, Jeffrey T. Cooke, Gregg S. Pettis

Faculty Publications

© 2016 Federation of European Biochemical Societies The human pathogen Vibrio vulnificus undergoes phase variation among colonial morphotypes, including a virulent opaque form which produces capsular polysaccharide (CPS) and a translucent phenotype that produces little or no CPS and is attenuated. Here, we found that a V. vulnificus mutant defective for RfaH antitermination control showed a diminished capacity to undergo phase variation and displayed significantly reduced distal gene expression within the Group I CPS operon. Moreover, the rfaH mutant produced negligible CPS and was highly sensitive to killing by normal human serum, results which indicate that RfaH is likely essential …

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