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Nanoindentation Study Of Corrosion-Induced Grain Boundary Degradation In A Pipeline Steel, Denizhan Yavas, Pratyush Mishra, Abdullah Alshehri, Pranav Shrotriya, Kurt R. Hebert, Ashraf F. Bastawros 2018 Iowa State University

Nanoindentation Study Of Corrosion-Induced Grain Boundary Degradation In A Pipeline Steel, Denizhan Yavas, Pratyush Mishra, Abdullah Alshehri, Pranav Shrotriya, Kurt R. Hebert, Ashraf F. Bastawros

Aerospace Engineering Publications

High-strength low-alloy steels used for oil and gas pipelines are vulnerable to intergranular stress corrosion cracking in moderately alkaline soils. The mechanism of corrosion-induced embrittlement under such conditions is not yet understood. Nanoindentation was used to detect localized degradation of mechanical properties near internal grain boundaries of X-70 steel undergoing intergranular corrosion at active dissolution potentials at pH 8.2. The measurements identified a one-micron thick mechanically-degraded layer with 25% reduced hardness near corroded grain boundaries. It is suggested that the corrosion process may introduce an active softening agent, possibly non-equilibrium lattice vacancies generated by oxidation.


Editorial - Volume 1, 2018, Pp.1-2, Wojciech M. Budzianowski 2018 Wojciech Budzianowski Consulting Services

Editorial - Volume 1, 2018, Pp.1-2, Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


Strategies For Using Technology When Grading Problem-Based Classes, Susan L. Murray, Ruwen Qin, Ivan Guardiola, Abhijit Gosavi 2018 Missouri University of Science and Technology

Strategies For Using Technology When Grading Problem-Based Classes, Susan L. Murray, Ruwen Qin, Ivan Guardiola, Abhijit Gosavi

Ruwen Qin

More and more work is being done today using technology. Email and digital drop boxes are useful tools for professors; however the challenge comes when one is teaching a quantitative class. The issue of using technology to manage work in a quantitative class is increasing as more engineering programs embrace distance education. In this paper we will review the advantages and disadvantages of several methods of collecting, grading, and returning homework assignments to students. The techniques considered include faxing, PDF grading using a Wacom Tablet, and various email approaches. Student survey results are also included in the paper.


An Investigation Of Load And Resistance Factor Design Of Drilled Shafts Using Historical Field Test Data, Kam Ng, Jessica Garder, Sri Sritharan, Jeramy Ashlock 2018 University of Wyoming, Laramie, WY

An Investigation Of Load And Resistance Factor Design Of Drilled Shafts Using Historical Field Test Data, Kam Ng, Jessica Garder, Sri Sritharan, Jeramy Ashlock

Sri Sritharan

To achieve engineered designs with consistent levels of reliability, the Federal Highway Administration (FHWA) mandated that all new bridges initiated after October 1, 2007, including those founded upon drilled shafts, be designed according to the Load and Resistance Factor Design (LRFD) approach. As the first step in developing efficient regional LRFD procedures for drilled shafts, the Drilled SHAft Foundation Testing (DSHAFT) database was formulated. DSHAFT was aimed at assimilating high quality, historical drilled shaft test data from Iowa and the surrounding states, and it presently contains data from 41 drilled shaft load tests, 38 of which are O-cell load tests ...


Bronx Community College Center For Sustainable Energy Collection, 2011-2012, Allen Thomas, Cynthia Tobar 2018 CUNY Bronx Community College

Bronx Community College Center For Sustainable Energy Collection, 2011-2012, Allen Thomas, Cynthia Tobar

Finding Aids

Finding aid for the Bronx Community College Center for Sustainable Energy Collection prepared by Bronx Community College Archives.


Inventing Around Edison’S Lamp Patent: The Role Of Patents In Stimulating Downstream Development And Competition, Ron D. Katznelson, John Howells 2018 Bi-Level Technologies

Inventing Around Edison’S Lamp Patent: The Role Of Patents In Stimulating Downstream Development And Competition, Ron D. Katznelson, John Howells

Ron D. Katznelson

We provide the first detailed empirical study of inventing around patent claims.  The enforcement of Edison’s incandescent lamp patent in 1891-1894 stimulated a surge of patenting. Most of these later patents disclosed inventions around the Edison patent.  Some of these patents introduced important new technology in their own right and became prior art for new fields, indicating that invention around patents contributes to dynamic efficiency.  Contrary to widespread contemporary understanding, the Edison lamp patent did not suppress technological advance in electric lighting.  The market position of General Electric (“GE”), the Edison patent-owner, weakened through the period of this patent ...


A Real-Time Wireless Sweat Rate Measurement System For Physical Activity Monitoring, Andrew Brueck, Tashfin Iftekhar, Alicja B. Stannard, Kumar Yelamarthi, Tolga Kaya 2018 Central Michigan University

A Real-Time Wireless Sweat Rate Measurement System For Physical Activity Monitoring, Andrew Brueck, Tashfin Iftekhar, Alicja B. Stannard, Kumar Yelamarthi, Tolga Kaya

Alicja Stannard

There has been significant research on the physiology of sweat in the past decade, with one of the main interests being the development of a real-time hydration monitor that utilizes sweat. The contents of sweat have been known for decades; sweat provides significant information on the physiological condition of the human body. However, it is important to know the sweat rate as well, as sweat rate alters the concentration of the sweat constituents, and ultimately affects the accuracy of hydration detection. Towards this goal, a calorimetric based flow-rate detection system was built and tested to determine sweat rate in real ...


A Real-Time Wireless Sweat Rate Measurement System For Physical Activity Monitoring, Andrew Brueck, Tashfin Iftekhar, Alicja B. Stannard, Kumar Yelamarthi, Tolga Kaya 2018 Central Michigan University

A Real-Time Wireless Sweat Rate Measurement System For Physical Activity Monitoring, Andrew Brueck, Tashfin Iftekhar, Alicja B. Stannard, Kumar Yelamarthi, Tolga Kaya

Tolga Kaya

There has been significant research on the physiology of sweat in the past decade, with one of the main interests being the development of a real-time hydration monitor that utilizes sweat. The contents of sweat have been known for decades; sweat provides significant information on the physiological condition of the human body. However, it is important to know the sweat rate as well, as sweat rate alters the concentration of the sweat constituents, and ultimately affects the accuracy of hydration detection. Towards this goal, a calorimetric based flow-rate detection system was built and tested to determine sweat rate in real ...


A Survey Of Social Network Forensics, Umit Karabiyik, Muhammed A. Canbaz, Ahmet Aksoy, Tayfun Tuna, Esra Akbas, Bilal Gonen, Ramazan S. Aygun 2018 Sam Houston State University

A Survey Of Social Network Forensics, Umit Karabiyik, Muhammed A. Canbaz, Ahmet Aksoy, Tayfun Tuna, Esra Akbas, Bilal Gonen, Ramazan S. Aygun

Annual ADFSL Conference on Digital Forensics, Security and Law

Social networks, specifically online social networks (OSNs), are becoming a part of our everyday life in this new millennium especially with the advanced and simple communication technologies through easily accessible devices such as smartphones and tablets. The data generated through the use of these technologies needs to be analyzed for forensic purposes when criminal and terrorist activities are involved. To deal with the forensic implications of social networks, current research on both digital forensics and social networks needs to be incorporated and understood. This will help digital forensics investigators to predict, detect and even prevent criminal activities in different forms ...


Tech Report: Fly-By-Logic: Control Of Multi-Drone Fleets With Temporal Logic Objectives, Yash Vardhan Pant, Houssam Abbas, Rhudii A. Quaye, Rahul Mangharam 2018 University of Pennsylvania

Tech Report: Fly-By-Logic: Control Of Multi-Drone Fleets With Temporal Logic Objectives, Yash Vardhan Pant, Houssam Abbas, Rhudii A. Quaye, Rahul Mangharam

Real-Time and Embedded Systems Lab (mLAB)

The problem of safe planning and control for multi- drone systems across a variety of missions is of critical importance, as the scope of tasks assigned to such systems increases. In this paper, we present an approach to solve this problem for multi-quadrotor missions. Given a mission expressed in Signal Temporal Logic (STL), our controller maximizes robustness to generate trajectories for the quadrotors that satisfy the STL specification in continuous-time. We also show that the constraints on our optimization guarantees that these trajectories can be tracked nearly perfectly by lower level off-the-shelf position and attitude controllers. Our approach avoids the ...


Jual Obat Kuat Viagra Asli Usa Di Bali 0821-6765-4444 Denpasar Cod, rt satu 2018 St. Mary's University, San Antonio, TX

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Jual Cream Titan Gel Asli Di Samarinda 0821-6765-4444 Pembesar Penis Cod, rt satu 2018 St. Mary's University, San Antonio, TX

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Jual Titan Gel Asli Di Samarinda, merupakan gel (CREAM) khusus untuk pria, yang menyediakan sistem transdermal yang unik untuk penyerapan cepat dan hasil yang cepat. Titan Gel merupakan produk dari bahan alami, yang secara signifikan memperluas pembuluh darah dan kapiler hingga menjadikan PENIS SEMAKIN BESAR DAN LEBIH TEBAL DALAM SATU BULAN! serta Hasilnya terlihat segera – tidak ada efek samping – yang paling utama adalah aman digunakan.
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Jual Obat Hammer Of Thor Asli Di Samarinda Cod 0821-6765-4444, rt satu 2018 St. Mary's University, San Antonio, TX

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Selective Conversion Of Biomass-Derived Oxygenates Over Bimetallic Catalysts, Steven Zhou, Jason Yang 2018 Selected Works

Selective Conversion Of Biomass-Derived Oxygenates Over Bimetallic Catalysts, Steven Zhou, Jason Yang

Steven Zhou

Biomass contains a large variety amounts of oxygenates, which can be converted into bio-fuels and valuable chemicals. Pt-based and Pd-based catalysts show good activity for these reactions. However, these mono-metallic catalysts typically cause issues of either poor selectivity towards target product or low stability (thus deactivation). Bimetallic catalysts could alter selectivity and improve stability, especically for cases when methane is involved for biomass-derived oxygenate conversions. The present study proposes a roadmap for using such bimetallic
catalysts for biomass-derived oxygenate conversion.


Selective Conversion Of Biomass-Derived Oxygenates Over Bimetallic Catalysts, Steven Zhou, Jason Yang 2018 Selected Works

Selective Conversion Of Biomass-Derived Oxygenates Over Bimetallic Catalysts, Steven Zhou, Jason Yang

Jason Yang

Biomass contains a large variety amounts of oxygenates, which can be converted into bio-fuels and valuable chemicals. Pt-based and Pd-based catalysts show good activity for these reactions. However, these mono-metallic catalysts typically cause issues of either poor selectivity towards target product or low stability (thus deactivation). Bimetallic catalysts could alter selectivity and improve stability, especically for cases when methane is involved for biomass derived oxygenate conversions. The present study proposes a roadmap for using such bimetallic
catalysts for biomass-derived oxygenate conversion.


Room-Temperature Homogeneous Nucleation Synthesis And Thermal Stability Of Nanometer Single Crystal Ceo2, X.-D. Zhou, Wayne Huebner, Harlan U. Anderson 2018 Missouri University of Science and Technology

Room-Temperature Homogeneous Nucleation Synthesis And Thermal Stability Of Nanometer Single Crystal Ceo2, X.-D. Zhou, Wayne Huebner, Harlan U. Anderson

Wayne Huebner

Nanometer (about 4~5nm) CeO2 single crystals were first synthesized by room-temperature homogeneous nucleation; the size was determined by electron microscopy and specific surfaced area of the particles. Modeling revealed that the surface energy of as-synthesized nanometer single crystals was in the range of 2.8-3.7J/m2. Crystal growth mechanisms change over the temperature regimes, from boundary diffusion over low-temperature regime (Eα=0.16eV) to bulk diffusion (Eα=0.50eV) over high-temperature region.


Inherent And Model-Form Uncertainty Analysis For Cfd Simulation Of Synthetic Jet Actuators, Daoru Frank Han, Serhat Hosder 2018 Missouri University of Science and Technology

Inherent And Model-Form Uncertainty Analysis For Cfd Simulation Of Synthetic Jet Actuators, Daoru Frank Han, Serhat Hosder

Serhat Hosder

A mixed (aleatory and epistemic) uncertainty quantification (UQ) method was applied to computational uid dynamics (CFD) modeling of a synthetic jet actuator. A test case, (ow over a hump model with synthetic jet actuator control) from the CFDVAL2004 work-shop was selected to apply the Second-Order Probability framework implemented with a stochastic response surface obtained from Quadrature-Based Non-Intrusive Polynomial Chaos (NIPC). Three uncertainty sources were considered: (1) epistemic (model-form) uncertainty in turbulence model, (2) aleatory (inherent) uncertainty in free stream veloc-ity and (3) aleatory uncertainty in actuation frequency. Uncertainties in both long-time averaged and phase averaged quantities were quantified using a ...


Uncertainty Quantification Integrated To The Cfd Modeling Of Synthetic Jet Actuators, Srikanth Adya, Daoru Frank Han, Serhat Hosder 2018 Missouri University of Science and Technology

Uncertainty Quantification Integrated To The Cfd Modeling Of Synthetic Jet Actuators, Srikanth Adya, Daoru Frank Han, Serhat Hosder

Serhat Hosder

The Point Collocation Non-Intrusive Polynomial Chaos (NIPC) method has been applied to two stochastic synthetic jet actuator problems used as test cases in the CFDVAL2004 workshop to demonstrate the integration of computationally efficient uncertainty quantification to the high-fidelity CFD modeling of synthetic jet actuators. In Case1 where the synthetic jet is issued into quiescent air, the NIPC method is used to quantify the uncertainty in the long-time averaged u and v-velocities at several locations in the flow field, due to the uniformly distributed uncertainty introduced in the amplitude and frequency of the oscillation of the piezo-electric membrane. Fifth order NIPC ...


Retention Of Female Faculty Members, Susan L. Murray, Mariesa Crow, Suzanna M. Rose 2018 Missouri University of Science and Technology

Retention Of Female Faculty Members, Susan L. Murray, Mariesa Crow, Suzanna M. Rose

Mariesa Crow

The recruitment and the retention of female undergraduate and graduate students into engineering courses is discussed. A similar challenge lies in recruiting female faculty member from the limited pool of candidates in several fields at most universities. It is found that about half the females who were hired did not stay at the university. It is suggested that programs should be introduced to encourage mentoring and career development as such improvements would benefit all faculty members both female and male.


Obat Aborsi Yogyakarta 082244058007 Obat Penggugur Kandungan, arin najwa, obat aborsi asli manjur serta tuntas 2018 Golden Gate University School of Law

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