• Increased CO2 hydrogenation to liquid products using promoted iron catalysts 

  Shafer, Wilson D.; Jacobs, Gary; Graham, Uschi M.; Hamdeh, Hussein H.; Davis, Burtron H. (Elsevier, 2019-01)

  The effect of alkali promoter (K, Rb and Cs) on the performance of precipitated iron-based catalysts was investigated for carbon dioxide (CO2) hydrogenation. Characterization by temperature-programmed reduction with CO, ...

• A forward branching phase space generator for hadron colliders 

  Figy, Terrance M.; Giele, Walter T. (Springer Berlin Heidelberg, 2018-10)

  In this paper we develop a projective phase space generator appropriate for hadron collider geometry. The generator integrates over bremsstrahlung events which project back to a single, fixed Born event. The projection is ...

• Chapter 1 - Quantum neural computation of entanglement is robust to noise and decoherence 

  Behrman, Elizabeth C.; Nguyen, Nam H.; Steck, James E.; McCann, M. (Elsevier, 2017)

  Measurement and witnesses of entanglement remain an important issue in quantum computing. Most witnesses will work for only a very restricted class of states, while measurements commonly require lengthy procedures. Quantum ...

• A comparison of some numerical conformal mapping methods for simply and multiply connected domains 

  Badreddine, Mohamed; DeLillo, Thomas K.; Sahraei, Saman (American Institute of Mathematical Sciences, 2019-01)

  This paper compares some methods for computing conformal maps from simply and multiply connected domains bounded by circles to target domains bounded by smooth curves and curves with corners. We discuss the use of explicit ...

• Inverse source problems without (pseudo) convexity assumptions 

  Isakov, Victor, 1947-; Lu, Shuai (American Institute of Mathematical Sciences, 2018-08)

  We study the inverse source problem for the Helmholtz equation from boundary Cauchy data with multiple wave numbers. The main goal of this paper is to study the uniqueness and increasing stability when the (pseudo)convexity ...

• Hydrogenation of carbon dioxide over iron carbide prepared from alkali metal promoted iron oxalate 

  Gnanamani, Muthu Kumaran; Hamdeh, Hussein H.; Shafer, Wilson D.; Hopps, Shelley D.; Davis, Burtron H. (Elsevier, 2018-08-25)

  Iron carbide was prepared by the carburization of iron oxalate doped with various alkali metals in flowing CO at 400 degrees C. The addition of alkali metal (Li, Na, K, Rb or Cs) to iron oxalate was found to decrease the ...

• Continuation of solutions of elliptic systems from discrete sets with application to geometry of surfaces 

  Domme, Cristina C. (Wichita State University, 2018-07)

  We obtain new estimates of stability for continuation of solutions of elliptic inequali- ties | ∂u|2 < = a|u|2 from finite discrete sets. For this we use Hormander's type of Carleman estimates for ∂-bar with boundary ...

• Increasing stability for the inverse scattering source problem with many frequencies 

  Entekhabi, Mozhgan (Nora) (Wichita State University, 2018-07)

  In mathematics and physics, the inverse scattering problem is the problem of determining characteristics of an object, based on data of how it scatters incoming radiation or particles. It is the inverse problem to the ...

• A comparative study of electroweak Higgs boson production at future Hadron Colliders 

  Chen, Tinghua (Wichita State University, 2018-07)

  The discovery of the Higgs boson has opened the door to the next phase of exploration in particle physics. Since the Higgs boson was found in July 2012 at CERN's Large Hadron Collider (LHC), many researches and experiments ...

• Stress testing the vector-boson-fusion approximation in multijet final states 

  Campanario, Francisco; Figy, Terrance M.; Plaetzer, Simon; Rauch, Michael; Schichtel, Peter; Sjodahl, Malin (American Physical Society, 2018-08-22)

  We consider electroweak Higgs plus three jets production at NLO QCD beyond strict VBF acceptance cuts. We investigate, for the first time, how accurate the VBF approximation is in these regions and within perturbative ...

• New constraints on oscillation parameters from v(e) appearance and v(mu) disappearance in the NOvA experiment 

  Cedeno, Alan; Meyer, Holger; Muether, Mathew; Solomey, Nickolas (American Physical Society, 2018-08-24)

  We present updated results from the NOvA experiment for v(mu) -> v(mu) and v(mu) -> v(e) oscillations from an exposure of 8.85 x 10(20) protons on target, which represents an increase of 46% compared to our previous ...

• Increasing stability in the two dimensional inverse source scattering problem with attenuation and many frequencies 

  Entekhabi, Mozhgan (Nora) (IOP Publishing, 2018-08-22)

  In this paper, we investigate the interior inverse source problem for the Helmholtz equation with attenuation in the plane from boundary Cauchy data of multiple frequencies when the source term is assumed to be compactly ...

• Fischer-Tropsch synthesis: effect of CO conversion on CH4 and oxygenate selectivities over precipitated Fe-K catalysts 

  Ma, Wenping; Shafer, Wilson D.; Jacobs, Gary; Yang, Jia; Sparks, Dennis E.; Hamdeh, Hussein H.; Davis, Burtron H. (Elsevier, 2018-06-25)

  The explanation for CH4 selectivity for iron based Fischer-Tropsch catalysts in the low conversion region (Le., < 50%) remains elusive. In this contribution, the CO conversion effect was carefully examined over four K ...

• Effect of gallium additions on reduction, carburization and Fischer-Tropsch activity of iron catalysts 

  Beasley, Charles; Gnanamani, Muthu Kumaran; Hamdeh, Hussein H.; Martinelli, Michela; Davis, Burtron H. (Springer US, 2018-07)

  Undoped and gallium-doped iron oxide catalysts (100Fe, 100Fe:2Ga, and 100Fe:5Ga) were prepared by following a continuous co-precipitation technique using ammonium hydroxide as precipitant. The catalysts were characterized ...

• Peakedness and convex ordering for elliptically contoured random fields 

  Wang, Fangfang; Ma, Chunsheng (Elsevier, 2018-12)

  For the peakedness comparison between two Gaussian random fields about their mean functions, a necessary and sufficient condition is derived in this paper in terms of their covariance functions. interestingly, such a ...

• Optically thin core accretion: how planets get their gas in nearly gas-free discs 

  Lee, Eve J.; Chiang, Eugene; Ferguson, Jason W. (Oxford University Press, 2018-05-11)

  Models of core accretion assume that in the radiative zones of accreting gas envelopes, radiation diffuses. But super-Earths/sub-Neptunes (1-4 R-circle plus, 2-20M(circle plus)) point to formation conditions that are ...

• On increasing stability in the two dimensional inverse source scattering problem with many frequencies 

  Entekhabi, Mozhgan (Nora); Isakov, Victor, 1947- (IOP Publishing, 2018-03-29)

  In this paper, we will study the increasing stability in the inverse source problem for the Helmholtz equation in the plane when the source term is assumed to be compactly supported in a bounded domain O with a sufficiently ...

• Programming quantum annealing computers using machine learning 

  Behrman, Elizabeth C.; Steck, James E. (IEEE, 2017)

  Commercial quantum annealing (QA) machines are now being built with hundreds of quantum bits (qubits). These are used as analog computers, to solve optimization problems by annealing to an unknown ground state (the solution), ...

• A new test for decreasing mean residual lifetimes 

  Lorenzo, Edgardo; Malla, Ganesh B.; Mukerjee, Hari (Taylor & Francis, 2018-03-02)

  The mean residual life of a non negative random variable X with a finite mean is defined by M(t) = E[X - t|X > t] for t 0. One model of aging is the decreasing mean residual life (DMRL): M is decreasing (non increasing) ...

• Monochromatic molecular absorption coefficients for use in calculations of stellar opacity 

  Ehrmann, Kari (Wichita State University, 2018-04-27)

  In order to fully understand stellar structure, it is necessary to know the opacity, as it influences the behavior of radiative transfer within the stellar interior. Opacity plays an important role in the onset of convection ...

View more