Now showing items 40168-40187 of 76154

    • Multiparameter adjoint tomography of the crust and upper mantle beneath East Asia: 1. Model construction and comparisons 

      (2015)
      We present a 3-D radially anisotropic model of the crust and mantle beneath East Asia down to 900 km depth. Adjoint tomography based on a spectral element method is applied to a phenomenal data set comprising 1.7 million frequency-dependent traveltime measurements from waveforms of 227 earthquakes recorded by 1869 stations. Compressional wave speeds ...
    • Multiparameter inversion and energy source estimation for a reflection seismic experiment 

      Minkoff, Susan Elizabeth (1995)
      Reflection seismologists illuminate the subsurface by introducing energy into the ground. These propagating waves encounter heterogeneities in the subsurface material and are partly reflected back up to the surface where they are recorded as seismograms. The seismic energy source in most cases cannot be reliably measured in a laboratory but must be ...
    • Multiparameter Inversion and Energy Source Estimation for a Reflection Seismic Experiment 

      Minkoff, Susan E. (1995-05)
      Reflection seismologists illuminate the subsurface by introducing energy into the ground. These propagating waves encounter heterogeneities in the subsurface material and are partly reflected back up to the surface where they are recorded as seismograms. The seismic energy source in most cases cannot be reliably measured in a laboratory but must be ...
    • Multiparticle Optical and Thermal Effects in Illuminated Solutions of Plasmonic Nanoparticles 

      Hogan, Nathaniel J (2014-10-22)
      Plasmonic nanoparticles are found in a number of applications as efficient converters of optical energy into heat, e.g. cancer therapy of nanoparticle-laden tumors. More recently, aqueous solutions of plasmonic nanoparticles have proven the ability to produce steam with relatively high efficiencies upon solar illumination. We show in this report ...
    • Multiphase unsaturated zone contaminant transport model for source term definition in ground water 

      Chang, Chi-Chung (1991)
      A multiphase unsaturated zone contaminant transport (MUCT) model has been developed to simulate the simultaneous vertical flow of water and a second immiscible fluid in unsaturated porous media. The model couples multiphase flow equations with a multiphase solute transport equation. The multiphase flow equations are solved semi-analytically by applying ...
    • Multiphysics model of a cardiac myocyte: A voltage-clamp study 

      Krishna, Abhilash (2013-07-24)
      We develop a composite multiphysics model of excitation-contraction coupling for a rat ventricular myocyte under voltage clamp (VC) conditions to: (1) probe mechanisms underlying the response to Ca2+-perturbation; (2) investigate the factors influencing its electromechanical response; and (3) examine its rate-dependent behavior (particularly the ...
    • Multiphysics model of a rat ventricular myocyte: A voltage-clamp study 

      Krishna, Abhilash; Valderrábano, Miguel; Palade, Philip T; Clark, John W Jr (2012)
      Background: The objective of this study is to develop a comprehensive model of the electromechanical behavior of the rat ventricular myocyte to investigate the various factors influencing its contractile response. Methods: Here, we couple a model of Ca2+ dynamics described in our previous work, with a well-known model of contractile mechanics ...
    • Multiphysics modeling of complex materials and structures 

      Shu, Wenya (2020-08-12)
      Many structures in aerospace, civil and mechanical systems, work in severe environments and exhibit complex responses. An improved understanding of the service performance of complex structures demands coupled multiphysics analyses. Progress in material science also advances manufacturing of high performance materials, making it essential to characterize ...
    • Multiple access schemes over multipath fading channels 

      Erkip, Elza; Aazhang, Behnaam (1998-10-20)
      We compare the performance of different accessing schemes for communication over an additive white Gaussian noise multiple access channel with multipath fading. We assume that only the receiver can track the channel variations. We investigate time division, frequency division and code division multiple access schemes and consider the Shannon capacity ...
    • Multiple Basis Wavelet Denoising using Besov Projections 

      Choi, Hyeokho; Baraniuk, Richard G. (1999-10-01)
      Wavelet-based image denoising algorithm depends upon the energy compaction property of wavelet transforms. However, for many real-world images, we cannot expect good energy compaction in a single wavelet domain, because most real-world images consist of components of a variety of smoothness. We can relieve this problem by using multiple wavelet bases ...
    • Multiple choice: Literary racial formations of mixed race Americans of Asian descent 

      Leonard, Shannon T. (2001)
      This dissertation reassesses key paradigms of Asian American literary studies in the interest of critically accounting for the cultural productions of mixed race Asian Americans. Over the last twenty years, Asian American literary criticism has focused narrowly on a small body of writers, such as Maxine Hong Kingston, David Henry Hwang, and Amy Tan, ...
    • Multiple early Eocene hyperthermal events: Their lithologic expressions and environmental consequences 

      Nicolo, Micah John (2009)
      A gradual rise in Earth's surface temperature marks a transition from the late Paleocene to the early Eocene ca. 58-51 Ma. Paleocene/Eocene boundary (∼55.5 Ma) sediments deposited in the midst of this slow warming ubiquitously reveal evidence for a massive isotopically light carbon injection and an associated rapid but transient global warming event, ...
    • Multiple event triggers in linear covariance analysis for orbital rendezvous 

      Sievers, Adam M. (2010)
      Linear covariance analysis is a powerful tool for spacecraft rendezvous analysis and design. This methodology is capable of generating results which compare well with the results of a Monte Carlo simulation while requiring dramatically less computation time. The introduction of multiple events triggered on state conditions causes discrepancies between ...
    • Multiple Facets of Arabidopsis Seedling Development Require Indole-3-Butyric Acid–Derived Auxin 

      Strader, Lucia C.; Wheeler, Dorthea L.; Christensen, Sarah E.; Berens, John C.; Cohen, Jerry D.; (2011)
      Levels of auxin, which regulates both cell division and cell elongation in plant development, are controlled by synthesis, inactivation, transport, and the use of storage forms. However, the specific contributions of various inputs to the active auxin pool are not well understood. One auxin precursor is indole-3-butyric acid (IBA), which undergoes ...
    • MULTIPLE FREQUENCY BACKSCATTER OBSERVATIONS OF HEATER-INDUCED FIELD-ALIGNED STRIATIONS IN THE AURORAL E REGION (IONOSPHERE, MODIFICATION) 

      NOBLE, STEPHEN T. (1985)
      In September 1983 a series of HF ionospheric modification exper- iments were conducted in Scandinavia using the heating facility near Tromso, Norway. The purpose of these experiments was to examine the mechanisms by which high-power HF radio waves produce geo- magnetic field-aligned striations (FAS) in the auroral E region. The vast majority of the ...
    • Multiple genome alignment in the telomere-to-telomere assembly era 

      Kille, Bryce; Balaji, Advait; Sedlazeck, Fritz J.; Nute, Michael; Treangen, Todd J. (2022)
      With the arrival of telomere-to-telomere (T2T) assemblies of the human genome comes the computational challenge of efficiently and accurately constructing multiple genome alignments at an unprecedented scale. By identifying nucleotides across genomes which share a common ancestor, multiple genome alignments commonly serve as the bedrock for comparative ...
    • Multiple invasions: invader interactions and multiple anthropogenic factors in wetland communities 

      Meza-Lopez, Maria Magdalena (2015-10-22)
      Ecosystems invaded by one invader often contain abundant populations of other invaders. This may reflect facilitative invader interactions, common response to anthropogenic factors (nutrient enrichment and/or climate warming), or result from common paths of introduction. My dissertation asked 1) do multitrophic invaders reciprocally facilitate each ...
    • Multiple isomers of carbon(60)hydrogen(36): The products of the birch reduction of carbon(60) 

      Nossal, Jamie R. (2000)
      The product mixture of the lithium Birch reduction of C60 is analyzed. C60H36 is identified as the major product; C60H32, C60H38 and C60H 40 are identified as minor products. The product mixture is separated into four fractions by high pressure liquid chromatography. 3He NMR spectra are obtained for the fractions by reduction of 3He C 60 and the 3He ...
    • Multiple Mobilities: Race, Capital, and South Asian Migrations to and Through Houston 

      Quraishi, Uzma (2013-09-16)
      The Immigration and Nationality Act of 1965 proved to be a watershed that altered the demographic composition of the United States in unexpected and unprecedented ways. Immigrants from India and Pakistan (part of South Asia) represented a highly educated elite migration in the 1960s and 1970s and filled a gap in the American economy for technical and ...
    • Multiple neuronal networks coordinate Hydra mechanosensory behavior 

      Badhiwala, Krishna N; Primack, Abby S; Juliano, Celina E; Robinson, Jacob T (2021)
      Hydra vulgaris is an emerging model organism for neuroscience due to its small size, transparency, genetic tractability, and regenerative nervous system; however, fundamental properties of its sensorimotor behaviors remain unknown. Here, we use microfluidic devices combined with fluorescent calcium imaging and surgical resectioning to study how the ...