cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Varying temperature and silicon content in nanodiamond growth: effects on silicon-vacancy centers
Creators: name: Choi, Sumin
name: Leong, Victor
name: Davydov, Valery A.
name: Agafonov, Viatcheslav N.
name: Cheong, Marcus W. O.
name: Kalashnikov, Dmitry A.
name: Krivitsky, Leonid A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nanodiamonds containing color centers open up many applications in quantum information processing, metrology, and quantum sensing. In particular, silicon vacancy (SiV) centers are prominent candidates as quantum emitters due to their beneficial optical qualities. Here we characterize nanodiamonds produced by a high-pressure high-temperature method without catalyst metals, focusing on two samples with clear SiV signatures. Different growth temperatures and relative content of silicon in the initial compound between the samples altered their nanodiamond size distributions and abundance of SiV centers. Our results show that nanodiamond growth can be controlled and optimized for different applications.
title: Numerical Modeling of Regional Ground Water Flow in the Deep-Brine Aquifers of the Palo Duro Basin, Texas Panhandle
Creators: name: Wirojanagud, Prakob
name: Kreitler, Charles W.
Publisher: name: The University of Texas at Austin
Year: 1984
Subjects: subject: groundwater
subject: modeling
subject: brines
subject: aquifers
subject: Texas Panhandle
subject: Palo Duro Basin

description: A conceptual hydrogeologic model of the Palo Duro Basin, Texas Panhandle, subdivides the basin into three hydrogeologic units: the shallow Ogallala and Dockum aquifers, the Permian evaporite aquitard, and the deep confined, underpressured Permian and Pennsylvanian brine aquifer. The first permeable units beneath the thick Permian evaporite section are Wolfcamp strata composed of carbonates, shales, and arkosic sand and gravels (granite wash) with average effective permeability values of 8.9, 0.0001, and 8.6 md, respectively. Groundwaters in the Wolfcamp aquifer flow to the northeast toward the semi-impermeable, granitic Amarillo Uplift. This anomalous hydrologic condition (flow toward a low-transmissivity barrier) may result from the presence of highly permeable granite-wash deposits that flank the uplift and function as "hydrologic sinks." A two-dimensional, vertical-averaging finite-element model, incorporating the different lithologies and their different permeabilities as well as leakage through the overlying evaporite aquitard, has been used to simulate the observed potentiometric surface of the Wolfcamp aquifer. The conditions that best simulate the observed Wolfcamp potentiometric surface are a combination of specified head and no-flow conditions along the uplift, permeability values greater than 260 md for the granite-wash deposits that flank the uplift (in contrast to the average value of 8.6 md), and an increased permeability value of 50 md for the highly porous carbonate zone. The best estimate of the vertical permeability of the evaporite aquitard is 0.00008 md. Treating the whole deep-brine aquifer as a single permeable unit beneath the evaporite aquitard, groundwater flow is to the northeast toward the uplift with a slightly larger west-to-east component than that found when considering only flow in Wolfcamp strata. The conditions that best simulate the averaged potentiometric surface are those from the best simulation of Wolfcamp strata, with increased permeability values of 260 md for the Pennsylvanian granite-wash close to the uplift and 250 md for the high-porosity Pennsylvanian sandstone.
Bioactive luteoloside produced by Myroides odoratimimus, solvent-tolerant bacterium form the rhizosphere of Lonicera japonica
Creators: name: Y. X. Zhao
name: J. J. Wang
name: L. Zhang
name: S. Zhang
name: S. L. Su
name: J. A. Duan
name: Z. Z. Yao
name: S. K. Xu
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Luteoloside (luteolin-7-O-glucoside), the biomarker of Lonicera japonica, was efficiently bio-synthetized from its cheaper precursor luteolin. The structure of luteoloside was characterized by LC-MS and NMR analyses. Compared to the significant inhibitory effect of luteolin on human hepatocyte cell line LO2 at high doses, luteoloside did not show obvious cytotoxic effects at any test dose. Moreover, luteoloside exhibited obvious promotive effects on human hepatocyte cells, suggesting a potential application in hepatoprotective therapies.
Vector Induced Lattice Gauge Theories
Creators: name: Pesando, Igor
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider vector induced lattice gauge theories, in particular we consider the QED induced and we show that at negative temperature corresponds to the dimer problem while at positive temperature it describes a gas of branched polymers with loops. We argue that these models are critical at $D_{cr}=6$ for $N\ne\infty$ and they are {\sl not} critical for $N=\infty$.
description: 9 Pages, plain Latex, NBI-HE-93-07
New insights in the mid-infrared bubble N49 site: a clue of collision of filamentary molecular clouds
Creators: name: Dewangan, L. K.
name: Ojha, D. K.
name: Zinchenko, I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the star formation processes operating in a mid-infrared bubble N49 site, which harbors an O-type star in its interior, an ultracompact HII region, and a 6.7 GHz methanol maser at its edges. The 13CO line data reveal two velocity components (at velocity peaks ~88 and ~95 km/sec) in the direction of the bubble. An elongated filamentary feature (length >15 pc) is investigated in each molecular cloud component, and the bubble is found at the interface of these two filamentary molecular clouds. The Herschel temperature map traces all these structures in a temperature range of ~16-24 K. In the velocity space of 13CO, the two molecular clouds are separated by ~7 km/sec, and are interconnected by a lower intensity intermediate velocity emission (i.e. a broad bridge feature). A possible complementary molecular pair at [87, 88] km/sec and [95, 96] km/sec is also observed in the velocity channel maps. These observational signatures are in agreement with the outcomes of simulations of the cloud-cloud collision process. There are also noticeable embedded protostars and Herschel clumps distributed toward the filamentary features including the intersection zone of the two molecular clouds. In the bubble site, different early evolutionary stages of massive star formation are also present. Together, these observational results suggest that in the bubble N49 site, the collision of the filamentary molecular clouds appears to be operated about 0.7 Myr ago, and may have triggered the formation of embedded protostars and massive stars.
description: 19 pages, 11 figures, 2 tables. Accepted for publication in The Astrophysical Journal
title: Submerged Lands of Texas, Brownsville-Harlingen Area: Sediments, Geochemistry, Benthic Macroinvertebrates..
Creators: name: White, William Allen, 1939-
name: Calnan, Thomas R.
name: Morton, Robert A.
Publisher: name: The University of Texas at Austin
Year: 1984
Subjects: subject: marine geology
subject: sediments
subject: geochemistry
subject: invertebrates
subject: Texas
subject: Brownsville
subject: Harlingen

description: Surface sediment textures, sediment geochemistry, and benthic fauna of the State-owned submerged lands were mapped and described using bottom samples collected at 1-mi (1.6-km) intervals from bays, estuaries, and lagoons, and the inner continental shelf. In one area of Laguna Madre samples were collected at 0.5-mi (0.8-km) intervals. In addition, the distribution of wetlands in adjacent areas was mapped using color infrared photographs taken primarily in 1979. Textural maps of the Brownsville-Harlingen area show that sand and muddy sand, having a mean grain size of between 2.5 and 5, are the dominant sediment types in bay-estuary-lagoon and inner-shelf areas. Generally, in Laguna Madre sands occur on the barrier island side of the lagoon, whereas muddier sediments are more abundant along the mainland side and in deeper areas. Muddy sand is dominant in the relatively wide southern end of Laguna Madre, and sand is dominant along the narrower, northern two-thirds of the lagoon where broad sandy wind-tidal flats on Padre Island grade into shallow subaqueous lagoon sands. Dominantly sand-sized sediments blanket most of the inner shelf and extend about 10 mi (16 km) offshore from Padre Island. The greatest extent of sand is associated with marine reworked late Pleistocene fluvial-deltaic deposits that underlie much of the inner shelf. Water depths average about 90 ft (30 m) at the outer limits of this sand-rich area. A nearshore patch of mud occurs near the mouth of the Rio Grande and represents the most recent deposition of the river. To the east and north the mud grades into muddy sand that represents a mixture of relict shelf sands and more modern fluvial muds.
Spherical harmonic decomposition applied to spatial-temporal analysis of human high-density EEG
Creators: name: Wingeier, Brett M.
name: Nunez, Paul L.
name: Silberstein, Richard B.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Quantitative Biology (q-bio)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We demonstrate an application of spherical harmonic decomposition to analysis of the human electroencephalogram (EEG). We implement two methods and discuss issues specific to analysis of hemispherical, irregularly sampled data. Performance of the methods and spatial sampling requirements are quantified using simulated data. The analysis is applied to experimental EEG data, confirming earlier reports of an approximate frequency-wavenumber relationship in some bands.
description: 12 pages, 8 figures, submitted to Phys. Rev. E, uses APS RevTeX styles
A novel proteochemometrics model for predicting the inhibition of nine carbonic anhydrase isoforms based on supervised Laplacian score and k-nearest neighbour regression
Creators: name: E. Nazarshodeh
name: R. Sheikhpour
name: S. Gharaghani
name: M. A. Sarram
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: Carbonic anhydrases (CAs) are essential enzymes in biological processes. Prediction of the activity of compounds towards CA isoforms could be evaluated by computational techniques to discover a novel therapeutic inhibitor. Studies such as quantitative structure–activity relationships (QSARs), molecular docking and pharmacophore modelling have been carried out to design potent inhibitors. Unfortunately, QSAR does not consider the information of target space in the model. We successfully developed an in silico proteochemometrics model that simultaneously uses target and ligand descriptors to predict the activities of CA inhibitors. Herein, a strong predictive model was built for the prediction of protein–ligand binding affinity between nine human CA isoforms and 549 ligands. We applied descriptors obtained from the PROFEAT webserver for the proteins. Ligands were encoded by descriptors from PaDEL-Descriptor software. Supervised Laplacian score (SLS) and particle swarm optimization were used for feature selection. Models were derived using k-nearest neighbour (KNN) regression and a kernel smoother model. The predictive ability of the models was evaluated by an external validation test. Statistical results (Q2ext = 0.7806, r2test = 0.7811 and RMSEtest = 0.5549) showed that the model generated using SLS and KNN regression outperformed the other models. Consequently, the selectivity of compounds towards these enzymes will be predicted prior to synthesis.
title: Hyrdologic Test Data, J. Friemel #1 Well, Deaf Smith County, Palo Duro Basin, Texas Panhandle
Creators: name: Smith, D. Anderson
Publisher: name: The University of Texas at Austin
Year: 1984
Subjects: subject: groundwater
subject: hydrology
subject: well testing
subject: Deaf Smith County
subject: Texas Panhandle
subject: Palo Duro Basin

description: The following report provides the hydraulic conductivity and head values of eight zones in the DOE-SWEC J. Friemel #1 well, as determined from pump test and drill-stem test data. The results are presented in tabulated form first, followed by the calculations performed to obtain the results.
Emergent exotic superconductivity in artificially-engineered tricolor Kondo superlattices
Creators: name: Naritsuka, M.
name: Ishii, T.
name: Miyake, S.
name: Tokiwa, Y.
name: Toda, R.
name: Shimozawa, M.
name: Terashima, T.
name: Shibauchi, T.
name: Matsuda, Y.
name: Kasahara, Y.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In the quest for exotic superconducting pairing states, the Rashba effect, which lifts the electron-spin degeneracy as a consequence of strong spin-orbit interaction (SOI) under broken inversion symmetry, has attracted considerable interest. Here, to introduce the Rashba effect into two-dimensional (2D) strongly correlated electron systems, we fabricate non-centrosymmetric (tricolor) superlattices composed of three kinds of $f$-electron compounds with atomic thickness; $d$-wave heavy fermion superconductor CeCoIn$_5$ sandwiched by two different nonmagnetic metals, YbCoIn$_5$ and YbRhIn$_5$. We find that the Rashba SOI induced global inversion symmetry breaking in these tricolor Kondo superlattices leads to profound changes in the superconducting properties of CeCoIn$_5$, which are revealed by unusual temperature and angular dependences of upper critical fields that are in marked contrast with the bulk CeCoIn$_5$ single crystals. We demonstrate that the Rashba effect incorporated into 2D CeCoIn$_5$ block layers is largely tunable by changing the layer thickness. Moreover, the temperature dependence of in-plane upper critical field exhibits an anomalous upturn at low temperatures, which is attributed to a possible emergence of a helical or stripe superconducting phase. Our results demonstrate that the tricolor Kondo superlattices provide a new playground for exploring exotic superconducting states in the strongly correlated 2D electron systems with the Rashba effect.
description: 11 pages, 6 figures
A New Underground Laboratory in the USA for a Neutrino Factory Detector and Other Scientific Projects
Creators: name: Cline, David B.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A neutrino factory storage ring can provide beams to various locations. We discuss the ICANOE detector (at LNGS) at one such site. We then describe the prospects for the use of the underground location at Carlsbad, NM for a neutrino factory detector. A brief discussion is given of a simple magnetized Fe detector of 10 50 kT for this site.
description: 8 pages, including 4 figures; Presented at NuFact'00 (Monterey, CA, May 2000) and to be published in the Proceedings by NIMPR-A
title: Evaluation of the J. Friemel #1 Vertical Well Tests, Deaf Smith County, Palo Duro Basin, Texas Panhandle
Creators: name: Smith, D. Anderson
Publisher: name: The University of Texas at Austin
Year: 1984
Subjects: subject: geology
subject: petroleum exploration
subject: well testing
subject: Deaf Smith County
subject: Texas Panhandle
subject: Palo Duro Basin

description: This report describes the vertical well test in the Wolfcamp interval of the J. Friemel #1 hydrologic test well. Included are (1) purpose of the test, (2) test approach, (3) "what went right with the test," (4) "what went wrong with the test," and (5) what should be done differently next time. Purpose of the Test The overall purpose of performing the vertical well test was to begin to estimate the importance of fracture permeability in the regional flow system. This aspect of the regional flow system has not been tested in either field tests or modeling exercises. It is probable that there is vertical fluid movement through the various hydrologic units of the Palo Duro Basin. Within each of the hydrologic units as well as across formation boundaries vertical flow may be through fractures. The purpose of this test was to assess the importance of fracture permeability between two porous Wolfcamp carbonate intervals.
Power dissipation in spintronic devices: A general perspective
Creators: name: Bandyopadhyay, Supriyo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Champions of spintronics often claim that spin based signal processing devices will vastly increase speed and/or reduce power dissipation compared to traditional charge based electronic devices. Yet, not a single spintronic device exists today that can lend credence to this claim. Here, I show that no spintronic device that clones conventional electronic devices, such as field effect transistors and bipolar junction transistors, is likely to reduce power dissipation significantly. For that to happen, spin-based devices must forsake the transistor paradigm of switching states by physical movement of charges, and instead, switch states by flipping spins of stationary charges. An embodiment of this approach is the single spin logic idea proposed more than 10 years ago. Here, I revisit that idea and present estimates of the switching speed and power dissipation. I show that the Single Spin Switch is far superior to the Spin Field Effect Transistor (or any of its clones) in terms of power dissipation. I also introduce the notion of matrix element engineering which will allow one to switch devices without raising and lowering energy barriers between logic states, thereby circumventing the kTln2 limit on energy dissipation. Finally, I briefly discuss single spin implementations of classical reversible (adiabatic) logic.
description: To appear in Journal of Nanoscience and Nanotechnology
Parameter restrictions in a non-commutative geometry model do not survive standard quantum corrections
Creators: name: Alvarez, E.
name: Gracia-Bondia, J. M.
name: Martin, C. P.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We have investigated the standard one-loop quantum corrections for a particularly simple non-commutative geometry model containing fermions interacting with a unique abelian gauge field and a unique scalar through Yukawa couplings. In this model there are certain relations among the different coupling constants quite similar to the ones appearing in the Connes-Lott version of the standard model. We find that it is not possible to implement those relations in a renormalization-group invariant way.
description: 8 pages, LaTeX
title: Beach and Vegetation-Line Changes at Galveston Island, Texas: Erosion, Deposition, and Recovery from Hurricane Alicia
Creators: name: Morton, Robert A.
name: Paine, Jeffrey G.
Publisher: name: The University of Texas at Austin
Year: 1984
Subjects: subject: coastal processes
subject: erosion
subject: deposition
subject: hurricanes
subject: Galveston Island
subject: Texas

description: On August 18, 1983, Hurricane Alicia crossed the Upper Texas Gulf Coast and caused extensive property damage, especially along West Beach of Galveston Island. Aerial photographs taken before and after Alicia, along with field measurements made during the first post-storm year, provide a basis for determining nearshore changes associated with a major storm and for predicting potential beach recovery. Alicia caused substantial landward retreat of both the shoreline and the vegetation line. Retreat of the vegetation line ranged from 20 to 145 ft and averaged 80 ft. Erosion was generally greatest near the Sea Isle and Bay Harbor subdivisions, where storm processes were most intense; beach erosion generally decreased away from San Luis Pass, which is near the site of storm landfall. Because erosion was so severe, surface elevations were lowered as much as 4.5 ft and many Gulf-front houses were undermined and exposed on the beach after the storm. Alicia eroded several million cubic yards of sand from West Beach. About one-tenth of that sand was deposited on the adjacent barrier flat as a washover terrace. Washover penetration was greatest to the east of the storm's eye and along developed shoreline segments. The remaining eroded beach sand was deposited offshore as shoreface bars or as storm deposits on the inner shelf. The shoreface deposits promoted rapid forebeach accretion during the first post-storm year; at the same time, the backbeach elevation remained about 3 ft lower than before the storm, and the natural post-Alicia vegetation line remained essentially unchanged. Recovery of the vegetation line 1 year after the storm was insignificant mainly because the depth of beach erosion exceeded the depth of root penetration, thus eliminating plants from some areas that were densely vegetated before the storm.
A Monitor of Beam Polarization Profiles for the TRIUMF Parity Experiment
Creators: name: Berdoz, A. R.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: TRIUMF experiment E497 is a study of parity violation in pp scattering at an energy where the leading term in the analyzing power is expected to vanish, thus measuring a unique combination of weak-interaction flavour conserving terms. It is desired to reach a level of sensitivity of 2x10^-8 in both statistical and systematic errors. The leading systematic errors depend on transverse polarization components and, at least, the first moment of transverse polarization. A novel polarimeter that measures profiles of both transverse components of polarization as a function of position is described.
description: 19 pages LaTeX, 10 PostScript figures. To appear in Nuclear Instruments and Methods in Physics Research, Section A
Ginzburg-Landau-type theory of non-polarized spin superconductivity
Creators: name: Lv, Peng
name: Bao, Zhi-qiang
name: Guo, Ai-Min
name: Xie, X. C.
name: Sun, Qing-Feng
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Since the concept of spin superconductor was proposed, all the related studies concentrate on spin-polarized case. Here, we generalize the study to spin-non-polarized case. The free energy of non-polarized spin superconductor is obtained, and the Ginzburg-Landau-type equations are derived by using the variational method. These Ginzburg-Landau-type equations can be reduced to the spin-polarized case when the spin direction is fixed. Moreover, the expressions of super linear and angular spin currents inside the superconductor are derived. We demonstrate that the electric field induced by super spin current is equal to the one induced by equivalent charge obtained from the second Ginzburg-Landau-type equation, which shows self-consistency of our theory. By applying these Ginzburg-Landau-type equations, the effect of electric field on the superconductor is also studied. These results will help us get a better understanding of the spin superconductor and the related topics such as Bose-Einstein condensate of magnons and spin superfluidity.
description: 9 pages, 5 figures
title: Modern Eolian Processes on the Southern High Plains
Creators: name: Machenberg, Marcie D.
name: Caran, S. Christopher
Publisher: name: The University of Texas at Austin
Year: 1984
Subjects: subject: geology
subject: aeolian processes
subject: geomorphology
subject: Texas
subject: High Plains

description: Eolian processes have substantially modified the landscape on the Southern High Plains within historic times. The maximum inferred rate of deflation was 18.9 mm/year at a site in Bailey County, Texas, a region of loose, sandy soils and frequent, seasonal dust storms. At least locally, agricultural practices have accelerated natural rates of erosion and deposition by winds. An extensive cover of windblown sand and silt mantles the gently sloping surface of the Southern High Plains. Eolian deflation and deposition are among the dominant geomorphic processes affecting this region throughout most of the Holocene and Pleistocene time. Historically, human activities have heightened the importance of wind action by disrupting the natural vegetative cover, thereby exposing the unconsolidated sediments. Agriculture, particularly dry-land cultivation, has been the principal form of land use in the area since the early 1900s or before (Webb, 1931). The effects of tilling practices on deflation are shown in Figure 1. The cultivated field on the right (east) is approximately 0.8 m lower than the range site on the left (west). This long, narrow field was cleared and probably brought into cultivation in the 1920s (C. D. Tunnell, personal communication, 1983). Its furrows run from north to south, along the field's long axis. The orientation of these furrows tends to maximize local deflation, as the furrows are parallel to the dominant winds. During the winter and early spring, some of the strongest winds are from the north, whereas the prevailing wind direction is southerly at other times of the year (Bomar, 1983). Other factors that enhance the erosional impact of the wind include antecedent dry conditions and frost heaving. Both are seasonal effects that increase the soil's susceptibility to removal during the frequent spring dust storms. After becoming entrained, soil aggregates from this field and others like it are transported from their source and redeposited as a broad sheet of eolian sediment.
title: Evaluating the Geology and Ground Water Hydrology of Deep Basin Lignite in the Wilcox Group of East Texas
Creators: name: Kaiser, W. R.
Publisher: name: The University of Texas at Austin
Year: 1984
Subjects: subject: geology
subject: groundwater
subject: lignite
subject: Wilcox Group
subject: East Texas

description: Lignite resources in Texas are currently estimated at 58 billion short tons (755 quadrillion British thermal units or Quads [Q] of energy) (Kaiser and others, 1980), constituting just over one-fourth or 26 percent of the state's energy endowment of 2,915 Q. Resources of near-surface lignite, those at depths between 20 and 200 ft (6.1 and 61 m), are about 23 billion tons (300 Q), of which some 8.6 to 11.1 billion tons are exploitable by current surface-mining methods. Near-surface reserves are adequate to meet the demand for lignite in this century. Meeting the demand in the next century and beyond will require the recovery of deep-basin lignite, occurring between depths of 200 and 2,000 ft (61 and 610 m) below the surface. Resources of deep-basin lignite at these depths and in seams greater than 5 ft (1.5 m) thick are about 35 billion tons (455 Q) or 16 percent of the state's energy endowment. These resources occur mainly in East Texas north of the Colorado River (about 70 percent) in two geologic units, primarily in the lower Eocene Wilcox Group (55 percent) and secondarily in the upper Eocene Jackson Group (15 percent). Deep-basin lignite is not economically recoverable at this time; however, large tonnages are potentially recoverable by deep-surface mining and underground, or in situ gasification. Small tonnages are now technically exploitable by in situ gasification, whereas deep mining on a routine basis remains to be demonstrated. Few details are known about deep-basin lignite in Texas. Therefore, a two-year program, funded by the Texas Energy and Natural Resources Advisory Council (TENRAC), was begun in September 1981 to collect, at the regional level, geologic, hydrologic, and chemical data about deep-basin lignite in the Wilcox Group to ultimately stimulate private exploration and exploitation of deep lignite.
Constraints on Physical Conditions for the Acceleration on Ultra-high-energy Cosmic Rays in Nearby Active Galactic Nuclei Observed with the Fermi Large Area Telescope
Creators: name: Kagaya, Mika
name: Katagiri, Hideaki
name: Yoshida, Tatsuo
name: Fukuda, Arisa
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We investigated the possibility of acceleration of ultra-high-energy cosmic rays (UHECRs) in nearby active galactic nuclei (AGNs) using archival multi-wavelength observational data, and then we constrained their physical conditions, i.e., the luminosity of the synchrotron radiation and the size of the acceleration site. First, we investigated the spatial correlation between the arrival directions of UHECRs and the positions of nearby AGNs in the Fermi third gamma-ray source catalog. We selected 27 AGNs as candidates of accelerators of UHECRs. Then, we evaluated the physical conditions in the acceleration regions of these AGNs via the Pe'er and Loeb method, which uses the peak luminosity of synchrotron radiation and the peak flux ratio of inverse Compton scattering to synchrotron radiation. From the evaluation, we found that six AGNs have the ability to accelerate ultra-high-energy protons in the AGN cores. Furthermore, we found that the minimum acceleration size must be more than a few kpc for acceleration of UHE protons in the AGN lobes.
Genitourinary and gastrointestinal toxicity among patients with localized prostate cancer treated with conventional versus moderately hypofractionated radiation therapy: systematic review and meta-analysis
Creators: name: Ícaro T. Carvalho
name: Baccaglini, Willy
name: Claros, Oliver R.
name: Chen, Felipe K.
name: Kayano, Paulo P.
name: Lemos, Gustavo C.
name: Weltman, Eduardo
name: Kuban, Deborah A.
name: Carneiro, Arie
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Background: Hypofractionated (HRT) prostate radiation therapy has the potential to deliver a higher biologically effective dose over a shorter time compared with conventional fractionation (CRT). HRT, giving fewer fractions each with higher dose, might improve the therapeutic ratio, resource use and patient convenience but the toxicity is still controversial. Our objective was to compare the gastroinstestinal (GI) and genitourinary (GU) toxicity of HRT versus CRT. Methods: Systematic review and meta-analysis of randomized clinical trials studies in PubMed, Cochrane and EMBASE databases published through December 2016 was done. Only randomized trials that evaluated patients with localized prostate cancer (PCa) undergoing CRT or HRT were included. In these studies, the daily dose was 1.8 Gy or 2 Gy per day for CRT and 2.4 to 3.4 Gy for HRT. Results: 7317 patients in nine studies were analyzed. Six studies included acute GU toxicity data which showed similar rates for both HRT and CRT (32.6vs. 31.9%; RD 0.00; 95% CI; −0.03,0.03; p = .81; I2 = 0%). Similarly, seven studies showed no difference in late GU toxicity based on treatment schedule (28.7 vs. 28.0%; RD −0.01; 95% CI; −0.04,0.03; p = .67; I2 = 52%). GI toxicity at three months after radiotherapy was higher in patients treated with HRT in six studies (27.5 vs. 21.9%; RD 0.06; 95% CI; 0.02,0.10; p = .004; I2 = 39%); however, eight studies showed GI toxicity 12 months or more after radiotherapy that was statistically the same (12.9 HRT vs. 16.2% CRT; RD −0.01; 95% CI; −0.04,0.02; p = .41; I2 = 58%). Conclusion: In meta-analysis of the available randomized trials on moderate HRT versus CRT for prostate cancer, acute and late GU toxicity were similar for both treatment schemes. While HRT was associated with higher acute GI toxicity, late toxicity was similar.
Spin-flip reflection at the normal metal-spin superconductor interface
Creators: name: Lv, Peng
name: Guo, Ai-Min
name: Li, Huaiyu
name: Liu, Chunxiao
name: Xie, X. C.
name: Sun, Qing-Feng
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study spin transport through a normal metal-spin superconductor junction. A spin-flip reflection is demonstrated at the interface, where a spin-up electron incident from the normal metal can be reflected as a spin-down electron and the spin $2\times \hbar/2$ will be injected into the spin superconductor. When the (spin) voltage is smaller than the gap of the spin superconductor, the spin-flip reflection determines the transport properties of the junction. We consider both graphene-based (linear-dispersion-relation) and quadratic-dispersion-relation normal metal-spin superconductor junctions in detail. For the two-dimensional graphene-based junction, the spin-flip reflected electron can be along the specular direction (retro-direction) when the incident and reflected electron locates in the same band (different bands). A perfect spin-flip reflection can occur when the incident electron is normal to the interface, and the reflection coefficient is slightly suppressed for the oblique incident case. As a comparison, for the one-dimensional quadratic-dispersion-relation junction, the spin-flip reflection coefficient can reach 1 at certain incident energies. In addition, both the charge current and the spin current under a charge (spin) voltage are studied. The spin conductance is proportional to the spin-flip reflection coefficient when the spin voltage is less than the gap of the spin superconductor. These results will help us get a better understanding of spin transport through the normal metal-spin superconductor junction.
description: 11 pages, 9 figures
A rhodamine hydrazide–4-nitroindole-3-carboxaldehyde based turn on Hg2+ chemosensor: cytoplasmic live cell imaging, logic gate and memory device applications and computational studies
Creators: name: Bhowmick, Rahul
name: Islam, Abu Saleh Musha
name: Mihir Sasmal
name: Katarkar, Atul
name: Mahammad Ali
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Space Science
subject: Cell Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: A new, highly sensitive probe L2 for the selective detection of Hg2+ in organo-aqueous (H2O:CH3CN, 1:1, v/v, HEPES buffer, pH 7.2) medium has been synthesized from rhodamine 6G-hydrazide and 4-nitroindole-3-carboxaldehyde. It was thoroughly characterized by physicochemical techniques including single crystal X-ray diffraction studies. The reaction of L2 with Hg2+ gives a 1:1 stoichiometry resulting in a 146 fold fluorescence enhancement and a binding constant (Kf) of 3 × 104 M−1. The spirolactam form of the probe is non-fluorescent; however, it shows dual channel (absorbance and fluorescence) recognition of Hg2+ via CHEF effect through the opening of the spirolactam ring. The quantum yields of L2 (0.00045) and L2-Hg2+ (0.29) show the higher stability of complex in the excited state over the free ligand. The 44.5 nM LOD value demonstrates the detection of Hg2+ at a very low concentration range. Cell imaging studies show the cytoplasmic recognition of Hg2+ by L2. Experimental results are comparable with theoretical values obtained by DFT studies. The fluorescence emission of the complex was completely quenched by I- and from the reversibility studies an advance level INHIBIT logic gate and memory device can be framed.
Tunnelling between non-centrosymmetric superconductors with significant spin-orbit splitting studied theoretically within a two-band treatment
Creators: name: Børkje, K.
name: Sudbø, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Tunnelling between non-centrosymmetric superconductors with significant spin-orbit splitting is studied theoretically in a two-band treatment of the problem. We find that the critical Josephson current may be modulated by changing the relative angle between the vectors describing absence of inversion symmetry on each side of the junction. The presence of two gaps also results in multiple steps in the quasiparticle current-voltage characteristics. We argue that both these effects may help to determine the pairing states in materials like CePt$_3$Si, UIr and Cd$_2$Re$_2$O$_7$. We propose experimental tests of these ideas, including scanning tunnelling microscopy.
description: 5 pages, 1 figure. Minor changes. Some new references added. Journal-ref. added
White Matter Fiber Segmentation Using Functional Varifolds
Creators: name: Kumar, Kuldeep
name: Gori, Pietro
name: Charlier, Benjamin
name: Durrleman, Stanley
name: Colliot, Olivier
name: Desrosiers, Christian
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Neurons and Cognition (q-bio.NC)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: The extraction of fibers from dMRI data typically produces a large number of fibers, it is common to group fibers into bundles. To this end, many specialized distance measures, such as MCP, have been used for fiber similarity. However, these distance based approaches require point-wise correspondence and focus only on the geometry of the fibers. Recent publications have highlighted that using microstructure measures along fibers improves tractography analysis. Also, many neurodegenerative diseases impacting white matter require the study of microstructure measures as well as the white matter geometry. Motivated by these, we propose to use a novel computational model for fibers, called functional varifolds, characterized by a metric that considers both the geometry and microstructure measure (e.g. GFA) along the fiber pathway. We use it to cluster fibers with a dictionary learning and sparse coding-based framework, and present a preliminary analysis using HCP data.
title: Mineral Resource Evaluation of the Proposed Columbus Bend Reservoir Site
Creators: name: Jackson, Mary L. W.
name: Collins, Gary F.
Publisher: name: The University of Texas at Austin
Year: 1984
Subjects: subject: geology
subject: mineral resources
subject: reservoirs
subject: evaluation
subject: Texas

description: The proposed Columbus Bend reservoir site lies in Fayette and Colorado Counties, Texas (fig. 1). The proposed permanent and maximum pool elevations are 220 ft and 240 ft, respectively, and the area they enclose is centered on the Colorado River floodplain extending north from Columbus, in Colorado County, to 8 mi northwest of La Grange in Fayette County. The purpose of this report is to evaluate the mineral resources in the reservoir and dam site area shown in figure 1, referred to in this report as the contract area. The four evaluated resources include oil and gas, sand and gravel, near-surface and deep-basin lignite, and uranium. No other mineral resources are known to occur in the contract area in amounts significantly greater than the background levels present in all rocks.
La Constitución ante el derecho internacional indígena. Tarea pendiente del Estado mexicano
Creators: name: Ramírez Sánchez, Saúl
name: Saavedra, José Enrique Victoria
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 480403
subject: Law and humanities
classificationCode: 480405
subject: Law and society and socio-legal research
classificationCode: 441004
subject: Social change

description: Since 1992, as in other Latin-American countries, the Mexican State has been reforming various legal orders including the Constitution with the goal of recognizing the human rights of indigenous peoples, nevertheless, it has not been possible to implement a reform that fulfill the demands of organizations, communities and indigenous peoples. In this sense, one hundred years after the promulgation of the Mexican Constitution of 1917, we make analyze about some sociodemographic data, to continue with the study of how the constitutional reforms in the rights of indigenous peoples made to the current Constitution are inconclusive despite the advances in the rights of indigenous peoples at the international level.
Quantum Particle on a Quantum Circle
Creators: name: Brzezinski, T.
name: Rembielinski, J.
name: Smolinski, K. A.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe a $q$-deformed dynamical system corresponding to the quantum free particle moving along the circle. The algebra of observables is constructed and discussed. We construct and classify irreducible representations of the system.
description: 11 pages, LaTeX
Symmetry-protected line nodes and Majorana flat bands in nodal crystalline superconductors
Creators: name: Kobayashi, Shingo
name: Sumita, Shuntaro
name: Yanase, Youichi
name: Sato, Masatoshi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Line nodes in the superconducting gap are known to be a source of Majorana flat bands (MFBs) in time-reversal-invariant superconductors (SCs). Here, we extend this relation to all symmetry-protected line nodes where an additional constraint arising from a symmetry of the crystal destabilizes or hides the existence of MFBs. By establishing a one-to-one correspondence between group theoretical and topological classifications, we are able to classify the possible line-node-induced MFBs, including cases with (magnetic) non-symmorphic space groups. Our theoretical analysis reveals a new type of MFB, i.e., MFBs in antiferromagnetic SCs.
description: 6 pages, 2 figures
Higher-order binding corrections to the Lamb shift of 2P states
Creators: name: Jentschura, U. D.
name: Pachucki, K.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present an improved calculation of higher-order corrections to the one-loop self energy of 2P states in hydrogen-like systems with small nuclear charge Z. The method is based on a division of the integration with respect to the photon energy into a high- and a low-energy part. The high-energy part is calculated by an expansion of the electron propagator in powers of the Coulomb field. The low-energy part is simplified by the application of a Foldy-Wouthuysen transformation. This transformation leads to a clear separation of the leading contribution from the relativistic corrections and removes higher order terms. The method is applied to the 2P_{1/2} and 2P_{3/2} states in atomic hydrogen. The results lead to new theoretical values for the Lamb shifts and the fine structure splitting.
description: 18 pages, LaTeX. In comparison to the journal version, it contains an added note (2000) which reflects the current status of Lamb shift calculations
Fast Convolution on the Sphere
Creators: name: Wandelt, Benjamin D.
name: Gorski, Krzysztof M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose fast, exact and efficient algorithms for the convolution of two arbitrary functions on the sphere which speed up computations by a factor \order{\sqrt{N}} compared to present methods where $N$ is the number of pixels. No simplifying assumptions are made other than bandlimitation. This reduces typical computation times for convolving the full sky with the asymmetric beam pattern of a megapixel Cosmic Microwave Background (CMB) mission from months to minutes. Our methods enable realistic simulation and careful analysis of data from such missions, taking into account the effects of asymmetric ``point spread functions'' and far side lobes of the physical beam. While motivated by CMB studies, our methods are general and hence applicable to the convolution or filtering of any scalar field on the sphere with an arbitrary, asymmetric kernel. We show in an appendix that the same ideas can be applied to the inverse problems of map-making and beam reconstruction by similarly accelerating the {\em transpose convolution} which is needed for the iterative solution of the normal equations.
description: 7 pages, 1 figure; results unchanged, minor changes to text. Submitted to Physical Review D
Universal set of quantum gates for double-dot spin qubits with fixed interdot coupling
Creators: name: Hanson, Ronald
name: Burkard, Guido
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a set of universal gate operations for the singlet-triplet qubit realized by two electron spins in a double quantum dot, in the presence of a fixed inhomogeneous magnetic field. All gate operations are achieved by switching the potential offset between the two dots with an electrical bias, and do not require time-dependent control of the tunnel coupling between the dots. We analyze the two-electron dynamics and calculate the effective qubit rotation angle as a function of the applied electric bias. We present explicit gate sequences for single-qubit rotations about two orthogonal axes, and a CNOT gate sequence, completing the universal gate set.
description: 5 pages, 4 figures; final version v2 (minor changes)
A rhodamine hydrazide–4-nitroindole-3-carboxaldehyde based turn on Hg2+ chemosensor: Cytoplasmic live cell imaging, logic gate and memory device applications and computational studies
Creators: name: Bhowmick, Rahul
name: Islam, Abu Saleh Musha
name: Mihir Sasmal
name: Katarkar, Atul
name: Mahammad Ali
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Space Science
subject: Cell Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: A new, highly sensitive probe L2 for the selective detection of Hg2+ in organo-aqueous (H2O:CH3CN, 1:1, v/v, HEPES buffer, pH 7.2) medium has been synthesized from rhodamine 6G-hydrazide and 4-nitroindole-3-carboxaldehyde. It was thoroughly characterized by physicochemical techniques including single crystal X-ray diffraction studies. The reaction of L2 with Hg2+ gives a 1:1 stoichiometry resulting in a 146 fold fluorescence enhancement and a binding constant (Kf) of 3×104 M−1. The spirolactam form of the probe is non-fluorescent; however, it shows dual channel (absorbance and fluorescence) recognition of Hg2+ via CHEF effect through the opening of the spirolactam ring. The quantum yields of L2 (0.00045) and L2-Hg2+ (0.29) show the higher stability of complex in the excited state over the free ligand. The 44.5 nM LOD value demonstrates the detection of Hg2+ at a very low concentration range. Cell imaging studies show the cytoplasmic recognition of Hg2+ by L2. Experimental results are comparable with theoretical values obtained by DFT studies. The fluorescence emission of the complex was completely quenched by I- and from the reversibility studies an advance level INHIBIT logic gate and memory device can be framed.