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Roadmap For Selected Key Measurements Of Lhcb, Raymond Mountain, Marina Artuso, S. Blusk, Alessandra Borgia 2010 Syracuse University

Roadmap For Selected Key Measurements Of Lhcb, Raymond Mountain, Marina Artuso, S. Blusk, Alessandra Borgia

Physics

Six of the key physics measurements that will be made by the LHCb experiment, concerning CP asymmetries and rare B decays, are discussed in detail. The "road map" towards the precision measurements is presented, including the use of control channels and other techniques to understand the performance of the detector with the first data from the LHC.


Distribution Of Zooplankton Densities Associated With The Florida Current And Subsurface, Amy Hirons, Jonathan Shenker, Alexander Soloviev 2010 Nova Southeastern University

Distribution Of Zooplankton Densities Associated With The Florida Current And Subsurface, Amy Hirons, Jonathan Shenker, Alexander Soloviev

Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures

No abstract provided.


Ubiquitous Low-Velocity Layer Atop The 410-Km Discontinuity In The Northern Rocky Mountains, John Jasbinsek, Kenneth Dueker 2010 University of Wyoming

Ubiquitous Low-Velocity Layer Atop The 410-Km Discontinuity In The Northern Rocky Mountains, John Jasbinsek, Kenneth Dueker

John Jasbinsek

Receiver functions from three 30-station IRIS-PASSCAL small-aperture arrays (2–15 km station spacing) operated for 10 months each in the northern Rocky Mountains show a ubiquitous negative polarity P to S conversion just preceding the 410-km discontinuity arrival. Data from the three arrays were sorted into NW, SE, and SW back-azimuth quadrants and stacked to form nine quadrant stacks. Remarkably, the negative polarity arrival (NPA) is apparent in 8 of the 9 quadrant stacks, with 7 of the 8 having well-correlated waveforms. Each quadrant stack also contains clear P to S conversions from the 410- and 660-km discontinuities. Moveout analysis ...


Endogenous Sirnas And Noncoding Rna-Derived Small Rnas Are Expressed In Adult Mouse Hippocampus And Are Up-Regulated In Olfactory Discrimination Training., Neil Smalheiser, G Lugli, Jyothi Thimmapuram, E.H. Cook, J Larson 2010 University of Illinois at Chicago

Endogenous Sirnas And Noncoding Rna-Derived Small Rnas Are Expressed In Adult Mouse Hippocampus And Are Up-Regulated In Olfactory Discrimination Training., Neil Smalheiser, G Lugli, Jyothi Thimmapuram, E.H. Cook, J Larson

Cyber Center Publications

We previously proposed that endogenous siRNAs may regulate synaptic plasticity and long-term gene expression in the mammalian brain. Here, a hippocampal-dependent task was employed in which adult mice were trained to execute a nose-poke in a port containing one of two simultaneously present odors in order to obtain a reward. Mice demonstrating olfactory discrimination training were compared to pseudo-training and nose-poke control groups; size-selected hippocampal RNA was subjected to Illumina deep sequencing. Sequences that aligned uniquely and exactly to the genome without uncertain nucleotide assignments, within exons or introns of MGI annotated genes, were examined further. The data confirm that ...


Halo Ion Trap Mass Spectrometry: Design, Instrumentation, And Performance, Miao Wang 2010 Brigham Young University - Provo

Halo Ion Trap Mass Spectrometry: Design, Instrumentation, And Performance, Miao Wang

All Theses and Dissertations

New ion trap mass spectrometry (ITMS) instrumentation, the toroidal IT and halo IT, were developed to meet the significant growth in on-site analysis applications. The miniature toroidal IT mass analyzer was operated with radio frequency (RF) trapping voltages of 3 kVp-p or less. Despite its reduced dimensions, it has roughly the same ion trapping capacity as conventional 3D quadrupole ITs. Unit-mass resolved spectra for n-butylbenzene, xenon, and naphthalene were obtained. The desired linear mass scale was obtained using conventional mass-selective instability scan combined with resonance ejection. The halo IT was also based on toroidal trapping geometry and microfabrication technology, consisting ...


Thermoelectric Power Investigations Of Ybagge Across The Quantum Critical Point, Eundeok Mun, Sergey L. Bud'ko, Paul C. Canfield 2010 Iowa State University

Thermoelectric Power Investigations Of Ybagge Across The Quantum Critical Point, Eundeok Mun, Sergey L. Bud'ko, Paul C. Canfield

Ames Laboratory Publications

The magnetic field and temperature dependences of the thermoelectric power (TEP) of the antiferromagnetically ordered heavy fermion compound YbAgGe are measured across the field-induced quantum critical point. These TEP measurements reproduce the earlier H-T phase diagram and identify an additional domelike phase between ∼45and ∼70 kOe. On the low-field side of this region, H>Hc∼45 kOe, the sign of the TEP changes from negative to positive; on the high-field side of this region, H≈70 kOe, a non-Fermi-liquid state is evidenced as the logarithmic temperature dependence of S(T)/T, in agreement with previous specific heat results C(T ...


Dnmt1 Stability Is Regulated By Proteins Coordinating Deubiquitination And Acetylation-Driven Ubiquitination, Zhanwen Du, Jing Song, Yong Wang, Yiqing Zhao, Kishore Guda, Shuming Yang, Hung Ying Kao, Yan Xu, Joseph Willis, Sanford D. Markowitz, David Sedwick, Robert M. Ewing, Zhenghe Wang 2010 Case Western Reserve University

Dnmt1 Stability Is Regulated By Proteins Coordinating Deubiquitination And Acetylation-Driven Ubiquitination, Zhanwen Du, Jing Song, Yong Wang, Yiqing Zhao, Kishore Guda, Shuming Yang, Hung Ying Kao, Yan Xu, Joseph Willis, Sanford D. Markowitz, David Sedwick, Robert M. Ewing, Zhenghe Wang

Chemistry Faculty Publications

DNA methyltransferase 1 (DNMT1) is the primary enzyme that maintains DNA methylation. We describe a previously unknown mode of regulation of DNMT1 protein stability through the coordinated action of an array of DNMT1-associated proteins. DNMT1 was destabilized by acetylation by the acetyltransferase Tip60, which triggered ubiquitination by the E3 ligase UHRF1, thereby targeting DNMT1 for proteasomal degradation. In contrast, DNMT1 was stabilized by histone deacetylase 1 (HDAC1) and the deubiquitinase HAUSP (herpes virus–associated ubiquitin-specific protease). Analysis of the abundance of DNMT1 and Tip60, as well as the association between HAUSP and DNMT1, suggested that during the cell cycle the ...


Speckle Reducing Bilateral Filter For Cattle Follicle Segmentation, Jinshang Teng, Shengwen Guo, Qingling Sun, Youping Deng, Dongfeng Zhou 2010 Alcorn State University

Speckle Reducing Bilateral Filter For Cattle Follicle Segmentation, Jinshang Teng, Shengwen Guo, Qingling Sun, Youping Deng, Dongfeng Zhou

Faculty Publications

Background: Ultrasound imaging technology has wide applications in cattle reproduction and has been used to monitor individual follicles and determine the patterns of follicular development. However, the speckles in ultrasound images affect the post-processing, such as follicle segmentation and finally affect the measurement of the follicles. In order to reduce the effect of speckles, a bilateral filter is developed in this paper. Results: We develop a new bilateral filter for speckle reduction in ultrasound images for follicle segmentation and measurement. Different from the previous bilateral filters, the proposed bilateral filter uses normalized difference in the computation of the Gaussian intensity ...


Optical Design Of Beam Shaping Optics For Camera Probe And Led Light Illumination Used For Minimally Invasive Abdominal Surgery, Weiyi He 2010 University of South Florida

Optical Design Of Beam Shaping Optics For Camera Probe And Led Light Illumination Used For Minimally Invasive Abdominal Surgery, Weiyi He

Graduate Theses and Dissertations

The optical design of a LED illuminator and camera imaging system were studied for potential use in a small medical "robotic type" probe to be used for minimally invasive abdominal surgery. Beam shaping optical reflectors were studied to increase the intensity distribution of the LED beam directed toward a close-by target surface. A CMOS/CCD camera and lens was used to image the targeted area. In addition, extensive optical ray tracing simulations were made to predict the intensity patterns. The experimental measurements and ray tracing simulations were in good agreement, and indicated that 20 degree cone reflectors for the LED ...


Minimal Resonances In Annular Non-Euclidean Strips, Bryan Gin-ge Chen, Christian D. Santangelo 2010 University of Pennsylvania

Minimal Resonances In Annular Non-Euclidean Strips, Bryan Gin-Ge Chen, Christian D. Santangelo

Department of Physics Papers

Differential growth processes play a prominent role in shaping leaves and biological tissues. Using both analytical and numerical calculations, we consider the shapes of closed, elastic strips which have been subjected to an inhomogeneous pattern of swelling. The stretching and bending energies of a closed strip are frustrated by compatibility constraints between the curvatures and metric of the strip. To analyze this frustration, we study the class of “conical” closed strips with a prescribed metric tensor on their center line. The resulting strip shapes can be classified according to their number of wrinkles and the prescribed pattern of swelling. We ...


Magneto-Optic Trapping Of Β-Decaying 38km, 37k From An On-Line Isotope Separator, J. A. Behr, A. Gorelov, T. Swanson, O. Hausser, K. P. Jackson, M. Trinczek, U. Giesen, J. M. D'Auria, R. Hardy, T. Wilson, P. Choboter, F, Leblond, L. Buchmann, M. Dombsky, C. D.P. Levy, G. Roy, B. A. Brown, J. Dilling 2010 Simon Fraser University

Magneto-Optic Trapping Of Β-Decaying 38km, 37k From An On-Line Isotope Separator, J. A. Behr, A. Gorelov, T. Swanson, O. Hausser, K. P. Jackson, M. Trinczek, U. Giesen, J. M. D'Auria, R. Hardy, T. Wilson, P. Choboter, F, Leblond, L. Buchmann, M. Dombsky, C. D.P. Levy, G. Roy, B. A. Brown, J. Dilling

Paul Choboter

A magneto-optic trap (MOT) can provide a well-polarized, backing-free, localized source of radioactive atoms for β-decay experiments. We have trapped approximately 6000 atoms of 38Km ( t1/2 = 0.925s) and 2000 atoms of 37K (1.226 s) produced at the TRIUMF on-line separator TISOL in a vapor-cell MOT. We have measured optical isotope shifts and deduced the nuclear charge radii, which show an unusual lack of change at the neutron number N = 20 shell closure. Plans include a search for scalar contributions to the β+- ν correlation in the 0+→0+ decay of 38Km.


On The Baroclinic Instability Of Axisymmetric Rotating Gravity Currents With Bottom Slope, Paul F. Choboter, Gordone E. Swaters 2010 University of Alberta

On The Baroclinic Instability Of Axisymmetric Rotating Gravity Currents With Bottom Slope, Paul F. Choboter, Gordone E. Swaters

Paul Choboter

The baroclinic stability characteristics of axisymmetric gravity currents in a rotating system with a sloping bottom are determined. Laboratory studies have shown that a relatively dense fluid released under an ambient fluid in a rotating system will quickly respond to Coriolis effects and settle to a state of geostrophic balance. Here we employ a subinertial two-layer model derived from the shallow-water equations to study the stability characteristics of such a current after the stage at which geostrophy is attained. In the model, the dynamics of the lower layer are geostrophic to leading order, but not quasi-geostrophic, since the height deflections ...


Is Necessity The Mother Of Innovation? The Adoption And Use Of Web Technologies Among Congressional Offices, Kevin Esterling, David Lazer, Michael Neblo 2010 University of California - Riverside

Is Necessity The Mother Of Innovation? The Adoption And Use Of Web Technologies Among Congressional Offices, Kevin Esterling, David Lazer, Michael Neblo

David Lazer

From first paragraph: Communication between legislator and constituents is fundamental to effective democratic representation, and devising the institutional means for citizen/legislator communication stands as one of the core and persistent problems in the practice of democracy. A legislator needs information about the preferences, ideals, norms, and beliefs of her constituents in order to do her job well. Similarly, citizens need information about the actions and decisions of their representative in order to maintain appropriate accountability. But as national problems become more complex, and as the political process grows more and more dominated by experts and organized groups, it is ...


Technology Integration In Secondary Mathematics Classrooms: Effect On Students’ Understanding, Megan Sheehan, Leah A. Nillas 2010 Illinois Wesleyan University

Technology Integration In Secondary Mathematics Classrooms: Effect On Students’ Understanding, Megan Sheehan, Leah A. Nillas

Leah A. Nillas

Technology use in secondary mathematics courses has the potential to bring about broad changes in learning environment and teaching pedagogy, allowing students to communicate and collaborate in new ways and to conjecture, justify, and generalize findings. However, this potential is only realized when teachers use technology in ways encouraging these outcomes (Galbraith, 2006). The purpose of this study is to examine the integration of technology in secondary mathematics classrooms and to evaluate the effectiveness of its use in relation to students’ learning outcomes. This self study research was conducted in honors geometry and AP calculus classes. Data sources included transcripts ...


Time Dilation In Relativistic Two-Particle Interactions, B T. Shields, Rainer Grobe, E V. Stefanovich, M R. Ware, Qichang Su, M C. Morris 2010 Illinois State University

Time Dilation In Relativistic Two-Particle Interactions, B T. Shields, Rainer Grobe, E V. Stefanovich, M R. Ware, Qichang Su, M C. Morris

Faculty publications – Physics

We study the orbits of two interacting particles described by a fully relativistic classical mechanical Hamiltonian. We use two sets of initial conditions. In the first set (dynamics 1) the system's center of mass is at rest. In the second set (dynamics 2) the center of mass evolves with velocity V. If dynamics 1 is observed from a reference frame moving with velocity-V, the principle of relativity requires that all observables must be identical to those of dynamics 2 seen from the laboratory frame. Our numerical simulations demonstrate that kinematic Lorentz space-time transformations fail to transform particle observables between ...


Hexakis(Prop-2-Enamide)Copper(Ii) Bis(Perchlorate) And Hexakis(Prop-2- Enamide)Manganese(Ii) Bis(Perchlorate), Mary McNamara, Andrew Kellett, Georgina Rosair, Michael Devereux, Malachy McCann 2010 Dublin Institute of Technology

Hexakis(Prop-2-Enamide)Copper(Ii) Bis(Perchlorate) And Hexakis(Prop-2- Enamide)Manganese(Ii) Bis(Perchlorate), Mary Mcnamara, Andrew Kellett, Georgina Rosair, Michael Devereux, Malachy Mccann

Articles

The structures of [Cu(AA)6](ClO4)2, (I), and [Mn(AA)6](ClO4)2, (II) (AA is acrylamide, also known as prop-2-enamide; C3H5NO), display both intra- and intermolecular N-H...O hydrogen bonding. A three-dimensional network is propagated via the perchlorate counter-ions. There are two crystallographically independent molecules in the copper complex, with the most significant difference between them being the conformation of one symmetry-related pair of AA ligands which are in the unusual syn conformation. The copper complex exhibits syn/anti disorder of the =CH2 group in one pair of symmetry-related AA ligands. The CuII and MnII centres are ...


Can Telomere Shortening Explain Sigmoidal Growth Curves?, Peter Olofsson 2010 Trinity University

Can Telomere Shortening Explain Sigmoidal Growth Curves?, Peter Olofsson

Mathematics Faculty Research

A general branching process model is proposed to describe the shortening of telomeres in eukariotic chromosomes. The model is flexible and incorporates many special cases to be found in the literature. In particular, we show how telomere shortening can give rise to sigmoidal growth curves, an idea first expressed by Portugal et al. (2008). We also demonstrate how other types of growth curves arise if telomere shortening is mitigated by other cellular processes. We compare our results to published data sets from the biological literature.


Fabrication And Characterization Of Coupled Metal-Dielectric-Metal Nanoantennas, Bhuwan Joshi, Xuejin Wen, Kai Sun, Wu Lu, Qi-Huo Wei 2010 Kent State University - Kent Campus

Fabrication And Characterization Of Coupled Metal-Dielectric-Metal Nanoantennas, Bhuwan Joshi, Xuejin Wen, Kai Sun, Wu Lu, Qi-Huo Wei

Chemical Physics Publications

The authors fabricated two dimensional arrays of metal-dielectric-metal nanoantennas consisting of a thin layer of light-emitting polymers sandwiched between two Ag parallel cuboids and characterized them by measuring the optical transmission through the antenna arrays. The measured transmission spectra show two resonant dips. Numerical simulations reproduce the experimental results and show that the left dip is due to a cavity resonance mode and the right dip is due to the absorption of the polymer. With this vertical antenna design, the dielectric gap can be made much smaller with an extremely small mode volume, making it a potential candidate for single ...


Conesus Lake Tributaries, Joseph C. Makarewicz, Theodore W. Lewis 2010 The College at Brockport

Conesus Lake Tributaries, Joseph C. Makarewicz, Theodore W. Lewis

Technical Reports

After several years of a general decrease in “concentrations” of various nutrients from managed watersheds, substantial increases in the concentrations of nutrients and soil particles were observed in streams during the summer of 2009 (Makarewicz and Lewis 2009). At Graywood Gully, for example, concentrations of soil (TSS), total phosphorus (TP), soluble reactive phosphorus (SRP), total Kjeldahl nitrogen (TKN), and nitrate increased in the stream water. At Cottonwood Gully, after a 5-year decrease, nitrate concentration (NO3+NO2) increased to levels not observed since 2003. Similar increases were observed in the Southwest, Sand Point, North Gully, Sutton Point and Long Point subwatersheds ...


Spatial Similarities And Differences Of Attributes Of Three Subwatersheds Within The Middle Smoky Hill River Watershed And Their Relationship To Instream Total Suspended Solids, Dustin Fross 2010 Fort Hays State University

Spatial Similarities And Differences Of Attributes Of Three Subwatersheds Within The Middle Smoky Hill River Watershed And Their Relationship To Instream Total Suspended Solids, Dustin Fross

Master's Theses

The objective of this study was to spatially analyze the attributes of three subwatersheds, Hydrological Unit Code 12 (HUC 12), of the Middle Smoky Hill River Watershed in west-central Kansas and relate the variances of the attributes to the concentrations of total suspended solids (TSS) entering the Smoky Hill River during storm events. This was accomplished by comparing land cover, including cropland, grassland, and urban factors; agricultural practices, such as tillage methods, condition of terraces, and the presence of grass waterways; geomorphology, including soil types, topography, and visible erosion; and lastly, precipitation variance. The three HUC 12s that were studied ...


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