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Table 6.03, Mark E. Shaurette 2010 Purdue University

Table 6.03, Mark E. Shaurette

Supplementary Content for <em>Demolition: Practices, Technology, and Management</em> <br />(ISBN 978-1-55753-567-2)

No abstract provided.


Nanoscale Metal-Metal Contact Physics From Molecular Dynamics: The Strongest Contact Size, Hojin Kim, Alejandro Strachan 2010 Purdue University - Main Campus

Nanoscale Metal-Metal Contact Physics From Molecular Dynamics: The Strongest Contact Size, Hojin Kim, Alejandro Strachan

PRISM: NNSA Center for Prediction of Reliability, Integrity and Survivability of Microsystems

Using molecular dynamics we find that the tensile strength of the contacts between two clean platinum surfaces with nanoscale asperities is strongly size dependent with a maximum strength for contact lengths of approximately 5 nm. This is the first time a strongest size is observed in single crystals. The strengthening with decreasing size down to 5 nm results from a decrease in the initial density of mobile dislocations available for plastic deformation and the subsequent weakening originates from a reduction in the constraint to mechanical deformation inside the contact by the bulk.


Wireless At The Nanoscale: Optical Interconnects Using Matched Nanoantennas, Andrea Alù, Nader Engheta 2010 University of Texas at Austin

Wireless At The Nanoscale: Optical Interconnects Using Matched Nanoantennas, Andrea Alù, Nader Engheta

Departmental Papers (ESE)

Optical waveguide interconnects are a major component of chip-scale data processing and computational systems. Here, we propose an alternative mechanism based on optical wireless broadcasting links using nanoantennas, which may overcome some of the limitations of nanoscale waveguide interconnects. By properly loading and matching nanoantenna pairs with optical nanocircuits, we theoretically demonstrate a complete optical wireless link that, in spite of some radiation loss and mismatch factors, may exhibit much less absorption loss, largely outperforming regular plasmonic waveguide links.


Scatterometer Image Reconstruction Tuning And Aperture Function Estimation For Advanced Microwave Scanning Radiometer On The Earth Observing System, Brian Adam Gunn 2010 Brigham Young University - Provo

Scatterometer Image Reconstruction Tuning And Aperture Function Estimation For Advanced Microwave Scanning Radiometer On The Earth Observing System, Brian Adam Gunn

All Theses and Dissertations

AMSR-E is a space-borne radiometer which measures Earth microwave emissions or brightness temperatures (Tb) over a wide swath. AMSR-E data and images are useful in mapping valuable Earth-surface and atmospheric phenomena. A modified version of the Scatterometer Image Reconstruction (SIR) algorithm creates Tb images from the collected data. SIR is an iterative algorithm with tuning parameters to optimize the reconstruction for the instrument and channel. It requires an approximate aperture function for each channel to be effective. This thesis presents a simulator-based optimization of SIR iteration and aperture function threshold parameters for each AMSR-E channel. A comparison of actual Tb ...


Radiometric Bimolecular Beacons For Sensitive Detection Of Rna In Single Living Cells, Antony K. Chen, Olga Davydenko, Mark A. Behlke, Andrew Tsourkas 2010 University of Pennsylvania

Radiometric Bimolecular Beacons For Sensitive Detection Of Rna In Single Living Cells, Antony K. Chen, Olga Davydenko, Mark A. Behlke, Andrew Tsourkas

Departmental Papers (BE)

Numerous studies have utilized molecular beacons (MBs) to image RNA expression in living cells; however, there is growing evidence that the sensitivity of RNA detection is significantly hampered by their propensity to emit false-positive signals. To overcome these limitations, we have developed a new RNA imaging probe called ratiometric bimolecular beacon (RBMB), which combines functional elements of both conventional MBs and siRNA. Analogous to MBs, RBMBs elicit a fluorescent reporter signal upon hybridization to complementary RNA. In addition, an siRNA-like doublestranded domain is used to facilitate nuclear export. Accordingly, live-cell fluorescent imaging showed that RBMBs are localized predominantly in the ...


Molecular Mechanism Of The Glycosylation Step Catalyzed By Golgi Α-Mannosidase Ii: A Qm/Mm Metadynamics Investigation, Luis Petersen, Albert Ardèvol, Carme Rovira, Peter J. Reilly 2010 Iowa State University

Molecular Mechanism Of The Glycosylation Step Catalyzed By Golgi Α-Mannosidase Ii: A Qm/Mm Metadynamics Investigation, Luis Petersen, Albert Ardèvol, Carme Rovira, Peter J. Reilly

Chemical and Biological Engineering Publications

Golgi α-mannosidase II (GMII), a member of glycoside hydrolase family 38, cleaves two mannosyl residues from GlcNAcMan5GlcNAc2 as part of the N-linked glycosylation pathway. To elucidate the molecular and electronic details of the reaction mechanism, in particular the conformation of the substrate at the transition state, we performed quantum mechanics/molecular mechanics metadynamics simulations of the glycosylation reaction catalyzed by GMII. The calculated free energy of activation for mannosyl glycosylation (23 kcal/mol) agrees very well with experiments, as does the conformation of the glycon mannosyl ring in the product of the glycosylation reaction (the covalent intermediate ...


Control System Performance And Efficiency For A Mid-Depth Lagrangian Profiling Float, B. McGilvray, C. Roman 2010 University of Rhode Island

Control System Performance And Efficiency For A Mid-Depth Lagrangian Profiling Float, B. Mcgilvray, C. Roman

Christopher N. Roman

This paper presents the development of a new mid-depth Lagrangian profiling float with a primary emphasis on the control system performance and efficiency. While deep water floats have demonstrated much success in open ocean environments, many are not suited for the additional challenges associated with coastal regions. To study these regions, which are often subject to varying bathymetry within the operating range and higher variations in water density, a more advanced system is required. This new design utilizes pressure and altitude feedback to drive a high volume auto-ballasting system (ABS). The main operating modes of this float include step inputs ...


Study Of Nano Structure Mn/Alumina Catalyst Deactivation Through Catalytic Oxidation Of O-Vocs, Hosein Afshary 2010 University of Tabriz

Study Of Nano Structure Mn/Alumina Catalyst Deactivation Through Catalytic Oxidation Of O-Vocs, Hosein Afshary

Hosein Afshary

the deactivation and selectivity behavior of nanostructure Mn/γ-Al2O3 catalyst in catalytic oxidation of an O-VOC (isopropanol) was studied. The polluted air was simulated and the catalyst was tested in the course of 50-h time-on-stream. Characterization of fresh and used catalysts was done using FT-IR, XRD, SEM and EDS methods. Comparing the testing results of this catalyst and that of the industrial Pt/Al2O3 catalyst showed that prepared catalyst can be suitable for substitution with the expensive pt/Al2O3 catalyst in environmental applications.


Geo-Engineering Reconnaissance Of The 2010 Maule, Chile Earthquake, Pedro Arduino, Scott Ashford, Dominic Assimaki, Jonathan Bray, Terry Eldridge, David Frost, Youssef Hashash, Tara Hutchinson, Laurie Johnson, Keith Kelson, Robert Kayen, Christian Ledezma, Robb Moss, George Mylonakis, Scott Olson, Kyle Rollins, Nicholas Sitar, Jonathan Stewart, Alfredo Urzua, Ramon Verdugo, Rob Witter, Nick Zoa 2010 University of California - Berkeley

Geo-Engineering Reconnaissance Of The 2010 Maule, Chile Earthquake, Pedro Arduino, Scott Ashford, Dominic Assimaki, Jonathan Bray, Terry Eldridge, David Frost, Youssef Hashash, Tara Hutchinson, Laurie Johnson, Keith Kelson, Robert Kayen, Christian Ledezma, Robb Moss, George Mylonakis, Scott Olson, Kyle Rollins, Nicholas Sitar, Jonathan Stewart, Alfredo Urzua, Ramon Verdugo, Rob Witter, Nick Zoa

Civil and Environmental Engineering

No abstract provided.


Application Of Structured Light Imaging For High Resolution Mapping Of Underwater Archaeological Sites, Chris Roman, Gabrielle Inglis, James Rutter 2010 University of Rhode Island

Application Of Structured Light Imaging For High Resolution Mapping Of Underwater Archaeological Sites, Chris Roman, Gabrielle Inglis, James Rutter

Graduate School of Oceanography Faculty Publications

This paper presents results from recent work using structured light laser profile imaging to create high resolution bathymetric maps of underwater archaeological sites. Documenting the texture and structure of submerged sites is a difficult task and many applicable acoustic and photographic mapping techniques have recently emerged. This effort was completed to evaluate laser profile imaging in comparison to stereo imaging and high frequency multibeam mapping. A ROV mounted camera and inclined 532 nm sheet laser were used to create profiles of the bottom that were then merged into maps using platform navigation data. These initial results show very promising resolution ...


Throughput And Delay Analysis On Uncoded And Coded Wireless Broadcast With Hard Deadline Constraints, Xiaohang Li, Chih-Chun Wang, Xiaojun Lin 2010 Purdue University - Main Campus

Throughput And Delay Analysis On Uncoded And Coded Wireless Broadcast With Hard Deadline Constraints, Xiaohang Li, Chih-Chun Wang, Xiaojun Lin

Department of Electrical and Computer Engineering Technical Reports

Multimedia streaming applications have stringent QoS requirements. Typically each packet is associated with a packet delivery deadline. This work models and considers realtime streaming broadcast over the downlink of a single cell. The broadcast capacity of the system subject to deadline constraints are studied for both uncoded and coded wireless broadcast schemes. For the uncoded scenario, an optimal transmission policy is devised based on finite-horizon dynamic programming, and a closed-form expression of the optimal throughput is developed in the asymptotic regime, as the size of the file approaches infinity. For the coded scenario, the optimal capacity in the asymptotic regime ...


Optimization And Correlation Of The Penn State Model Of Friction Stir Welding To Experimental Welds In 304l Stainless Steel, Devin Donaldson Furse 2010 Brigham Young University - Provo

Optimization And Correlation Of The Penn State Model Of Friction Stir Welding To Experimental Welds In 304l Stainless Steel, Devin Donaldson Furse

All Theses and Dissertations

A numerical model of friction stir welding developed by T. DebRoy, R. Nandan, and others has been optimized to fit experimental data of eleven welds of 304L stainless steel at various weld feed rates and spindle speeds. Optimization was used to determine the values of five difficult-to-measure model parameters. The optimal parameter values were then correlated to the weld machine inputs. The mechanical efficiency and the coefficient of friction were not correlated with feed rate, spindle speed, or axial pressure. Tool slip was positively correlated with feed rate, negatively correlated with spindle speed, and not correlated with axial pressure. The ...


Constrained Stereo Correspondence For 3d Sea-Floor Reconstruction, Gabrielle Inglis, Chris Roman 2010 University of Rhode Island

Constrained Stereo Correspondence For 3d Sea-Floor Reconstruction, Gabrielle Inglis, Chris Roman

Christopher N. Roman

No abstract provided.


Doped-Ceria Diffusion Barriers Prepared By Infiltration For Solid Oxide Fuel Cells, Rainer Küngas, Fred Bidrawn, John M. Vohs, Raymond J. Gorte 2010 University of Pennsylvania

Doped-Ceria Diffusion Barriers Prepared By Infiltration For Solid Oxide Fuel Cells, Rainer Küngas, Fred Bidrawn, John M. Vohs, Raymond J. Gorte

Departmental Papers (CBE)

To stabilize solid oxide fuel cells cathodes prepared by infiltration of La0.8Sr0.2CoO3 (LSCo) into porous yttria-stabilized zirconia (YSZ), a coating of Sm-doped ceria (SDC) was first deposited onto the YSZ scaffold. The dense SDC coating was prepared by infiltration with aqueous solutions of SM(NO3)3 and Ce(NO3)3, followed by calcination to 1473 K. The SDC coating prevented ~ 20 mΩ cm2, at 973 K, with acceptable degradation after heating to 1373 K.


Dynamic Winkler Modulus For Axially Loaded End-Bearing Piles, George M. Anoyatis, George E. Mylonakis 2010 University of Patras, Greece

Dynamic Winkler Modulus For Axially Loaded End-Bearing Piles, George M. Anoyatis, George E. Mylonakis

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

The problem of dynamic pile-soil interaction and its modeling through the concept of a Dynamic Winkler Foundation are revisited. It is shown that depth-dependent Winkler springs and dashpots, obtained by dividing the complex-valued soil shear tractions and the corresponding displacements along the pile, may faithfully describe pile-soil interaction, contrary to common perception that the Winkler model is always approximate. A theoretical wave model is then derived for analyzing the response of axially loaded endbearing piles embedded in a homogeneous viscoelastic soil medium. Closed-form solutions are obtained for: (i) the displacement field in the soil and along the pile; (ii) the ...


Dynamic Behavior Of An Elastic Beam On A Winkler Foundation Under A Moving Load, Abdul Hayir 2010 Istanbul Technical University, Turkey

Dynamic Behavior Of An Elastic Beam On A Winkler Foundation Under A Moving Load, Abdul Hayir

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

The purpose of this study is to investigate the response of an elastic beam on a Winkler foundation under a moving load. The load is assumed as a moving harmonic load and the beam is considered as an infinite Bernoulli-Euler beam with constant cross-section. The approach of Winkler foundation for the elastic foundation is very common in the practical applications although it does not accurately represent the continuous characteristic of the foundations. In this model the interaction between the vertical springs is only considered. In the solutions of the problem, the double Fourier Transform is applied and for its invention ...


Increasing Lateral Capacity Of Helical Piles With Lateral Restraint Devices, John L. Maier, Ali M. Oskoorouchi 2010 Purcell, Rhoades & Associates, Pleasant Hill, CA

Increasing Lateral Capacity Of Helical Piles With Lateral Restraint Devices, John L. Maier, Ali M. Oskoorouchi

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Deflection analysis of piles under lateral live loads in various soil conditions is presented herein. Field testing of lateral capacity was conducted at four test sites in California and Nevada, where weak surface soil provides insufficient lateral capacity for helical piles. In these areas of weak surface soil, as defined by field or laboratory testing, the most feasible solution for a foundation system may be the implementation of a deep foundation system such as a pier and grade beam or helical pile (HP) foundation system. Helical pile diameters that normally range from 1-1/2 to 4 inches provide minimal support ...


Design Of A Low-Cost, Underwater Acoustic Modem For Short-Range Sensor Networks, Bridget Benson, Y. Li., R. Kastner, B. Faunce, K. Domond, D. Kimball, C. Schurgers 2010 University of California - San Diego

Design Of A Low-Cost, Underwater Acoustic Modem For Short-Range Sensor Networks, Bridget Benson, Y. Li., R. Kastner, B. Faunce, K. Domond, D. Kimball, C. Schurgers

Electrical Engineering

A fundamental impediment to the use of dense underwater sensor networks is an inexpensive acoustic modem. Commercial underwater modems that do exist were designed for sparse, long range, applications rather than for small, dense, sensor nets. Thus, we are building an underwater acoustic modem starting with the most critical component from a cost perspective - the transducer. The design substitutes a commercial transducer with a homemade transducer using cheap piezoceramic material and builds the rest of the modem's components around the properties of the transducer to extract as much performance as possible. This paper presents the design considerations, implementation details ...


Shake Table Testing To Quantify Seismic Soil Structure Interaction Of Underground Structures, Robb E.S. Moss, Vic Crosariol, Steven Kuo 2010 California Polytechnic State University - San Luis Obispo

Shake Table Testing To Quantify Seismic Soil Structure Interaction Of Underground Structures, Robb E.S. Moss, Vic Crosariol, Steven Kuo

Civil and Environmental Engineering

This research uses shake table testing of scale soil-structure models to mimic the coupled seismic response of underground structures and surrounding/supporting soil (termed soil-structural-interaction or SSI). Currently the seismic design of subways and other critical underground infrastructure rely on little to no empirical data for calibrating numerical simulations. This research is working towards filling that empirical data gap. The research is composed of two phases, the first a validation of the free-field response of a flexible wall barrel filled with model soil, the second a test to measure the “racking” deformations induced in a model subway cross-section embedded in ...


Determination Of The Proper Thickness Of Sublayers For Analyzing Post-Liquefaction Deformation Associated With Seepage Of Pore Water After Earthquake, Ramez Alchamaa, Mitsutoshi Yoshimine 2010 Tokyo Metropolitan University, Japan

Determination Of The Proper Thickness Of Sublayers For Analyzing Post-Liquefaction Deformation Associated With Seepage Of Pore Water After Earthquake, Ramez Alchamaa, Mitsutoshi Yoshimine

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

The estimation of the large flow deformation in the liquefiable layered ground and its effects on a variety of civil structures and infrastructures is considered to be a significant concern in recent earthquakes. This paper proposes a new practical approach for estimating the appropriate thickness of sub-layers within a soil profile (soil element size) for simulating the post-liquefaction deformation considering the seepage flow of pore water after an earthquake. The findings of recent numerical analysis and extensive series of triaxial tests were utilized to develop the ability to analyze such fundamental issue. The study was conducted based on to the ...


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