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Synthesis And Characterization Of Encapsulated Nanosilica Particles With An Acrylic Copolymer By In Situ Emulsion Polymerization Using Thermoresponsive Nonionic Surfactant, Mostafa Yazdimamaghani, Tannaz Pourvala, Elaheh Motamedi, Babak Fathi, Daryoosh Vashaee, Lobat Tayebi Sep 2013

Synthesis And Characterization Of Encapsulated Nanosilica Particles With An Acrylic Copolymer By In Situ Emulsion Polymerization Using Thermoresponsive Nonionic Surfactant, Mostafa Yazdimamaghani, Tannaz Pourvala, Elaheh Motamedi, Babak Fathi, Daryoosh Vashaee, Lobat Tayebi

Chemical and Biochemical Engineering Faculty Research & Creative Works

Nanocomposites of encapsulated silica nanoparticles were prepared by in situ emulsion polymerization of acrylate monomers. The synthesized material showed good uniformity and dispersion of the inorganic components in the base polymer, which enhances the properties of the nanocomposite material. A nonionic surfactant with lower critical solution temperature (LCST) was used to encapsulate the silica nanoparticles in the acrylic copolymer matrix. This in situ method combined the surface modification and the encapsulation in a single pot, which greatly simplified the process compared with other conventional methods requiring separate processing steps. The morphology of the encapsulated nano silica particles was investigated by …


The Missouri Miner, September 26, 2013 Sep 2013

The Missouri Miner, September 26, 2013

The Missouri Miner Newspaper

No abstract provided.


Development Of Long Carbon Fiber-Reinforced Concrete For Dynamic Strengthening, Zahra S. Tabatabaei, Jeffery S. Volz, Benjamin P. Gliha, Darwin I. Keener Sep 2013

Development Of Long Carbon Fiber-Reinforced Concrete For Dynamic Strengthening, Zahra S. Tabatabaei, Jeffery S. Volz, Benjamin P. Gliha, Darwin I. Keener

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This paper discusses the development and testing of long carbon fibers-fibers 75 mm long or longer-to improve the resistance of reinforced concrete to dynamic loading, such as blasts and impact. In the past, attempts to use long fibers in concrete have failed as a result of both balling (agglomeration) and poor dispersion of the fibers. In the present study, two types of long carbon fibers were developed and optimized for their use in reinforced concrete. The resulting long carbon fiber-reinforced concrete (LCFRC) was subsequently evaluated through impact and blast testing. Full-scale blast testing revealed that these fibers significantly increased the …


Dynamic Nonlinearity And Nonlinear Single-Degree-Of-Freedom Model For Cable Net Glazing, Ruo Qiang Feng, Jihong Ye, Guirong Yan, Jin Ming Ge Sep 2013

Dynamic Nonlinearity And Nonlinear Single-Degree-Of-Freedom Model For Cable Net Glazing, Ruo Qiang Feng, Jihong Ye, Guirong Yan, Jin Ming Ge

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The Nonlinear Vibration Differential Equation and Vibration Frequency of Cable Net Glazing Subject to Earthquake Loading Was Determined, and a Geometrically Nonlinear Single-Degree-Of-Freedom Model for Cable Net Glazing Was Developed. the Nonlinear Response Spectra Were Established, and Nonlinear Time History Analysis with Finite Element (FE) Models Was Conducted to Verify Them. the Nonlinear Vibration Differential Equation and Frequency Obtained as Described in This Paper Provide a Basis for the Nonlinear Single-Degree-Of-Freedom Model for Cable Net Glazing. the Analytical Formula for the Nonlinear Frequency with a Simplified Expression is Highly Precise and Convenient for Use in Engineering Practice. for Larger-Amplitude Seismic …


Microstructural Evolution And Mechanical Properties Of Friction Stir Welded Ods Alloy Ma754, Jiye Wang, Wei Yuan, Rajiv S. Mishra, Indrajit Charit Sep 2013

Microstructural Evolution And Mechanical Properties Of Friction Stir Welded Ods Alloy Ma754, Jiye Wang, Wei Yuan, Rajiv S. Mishra, Indrajit Charit

Materials Science and Engineering Faculty Research & Creative Works

Microstructural evolution and mechanical properties of MA754, an yttrium oxide dispersion-strengthened nickel-based superalloy, were investigated after friction stir welding (FSW). A tool rotation rate of 1000 revolution per minute and a traverse speed of 50.8 mm per minute were employed using a cermet (WC-Co) tool. After FSW, fine equiaxed grain structure with a high dislocation density and a random texture was achieved. Agglomeration of yttrium oxide dispersoids was observed in FSW MA754. Room-temperature tensile properties of FSW MA754 were compared to those of as-received MA754 alloy, and the results indicated that particle strengthening contribution decreased as a result of dispersoid …


Faculty Senate Minutes September 19, 2013, Missouri University Of Science And Technology Faculty Senate Sep 2013

Faculty Senate Minutes September 19, 2013, Missouri University Of Science And Technology Faculty Senate

Minutes & Agendas

No abstract provided.


The Missouri Miner, September 19, 2013 Sep 2013

The Missouri Miner, September 19, 2013

The Missouri Miner Newspaper

No abstract provided.


Wound Care, Steven B. Jung, D. E. Day Sep 2013

Wound Care, Steven B. Jung, D. E. Day

Materials Science and Engineering Faculty Research & Creative Works

A method for treating a wound, and a dressing for wound care management comprising a three-dimensional body of glass-based fibers comprising one or more glass-formers selected from the group consisting of P2O5, SiO2, and B2O3; at least about 25 wt % of the fibers have a diameter between about 200 nm and about 4000 nm, and a length:width aspect ratio of at least about 10. In another form, the glasses are in the form of particles in an ointment or cream applied to a wound. In yet other forms the glasses are …


Smooth Transition Neighborhood Graphs For 3d Spatial Relations, Chaman L. Sabharwal, Jennifer L. Leopold Sep 2013

Smooth Transition Neighborhood Graphs For 3d Spatial Relations, Chaman L. Sabharwal, Jennifer L. Leopold

Computer Science Faculty Research & Creative Works

Distance between two relations can be defined by using some metric based on the qualitative or quantitative representation of the relations [1]. However, qualitative distances cannot be expressed by conventional measures. Most differentiating measures are derived from observation and experience in an ad hoc manner. The outcomes are cognitively acceptable only if they match the user's concept of distance. We have designed an algorithm based on heuristics to derive a conceptual neighborhood supporting smooth transitions between the relations. Herein we present the results of applying the algorithm to the well-known region connection calculus, RCC-8, and to an additional model, VRCC-3D+, …


Efficient Determination Of Spatial Relations Using Composition Tables And Decision Trees, Nathan Eloe, Jennifer Leopold, Chaman Sabharwal, Douglas Mcgeehan Sep 2013

Efficient Determination Of Spatial Relations Using Composition Tables And Decision Trees, Nathan Eloe, Jennifer Leopold, Chaman Sabharwal, Douglas Mcgeehan

Computer Science Faculty Research & Creative Works

In order for Qualitative Spatial Reasoning applications to be both useful and usable, the information feedback loop between the computational engine and the user must be as seamless as possible. Inherently, computational geometry can be quite expensive, and every effort must be made to avoid inefficient or unnecessary calculations. Within the field of Region Connection Calculi, the 9-Intersection model often is used to determine the spatial relation between two regions. Consequently, optimization efforts typically focus on calculations involving the intersections between the interiors, boundaries, and exteriors of the regions, or the use of composition tables to narrow down the possibilities …


The Missouri Miner, September 12, 2013 Sep 2013

The Missouri Miner, September 12, 2013

The Missouri Miner Newspaper

No abstract provided.


Stabilizing Nanostructured Solid Oxide Fuel Cell Cathode With Atomic Layer Deposition, Yunhui Gong, Diego Palacio, Xueyan Song, Rajankumar L. Patel, Xinhua Liang Sep 2013

Stabilizing Nanostructured Solid Oxide Fuel Cell Cathode With Atomic Layer Deposition, Yunhui Gong, Diego Palacio, Xueyan Song, Rajankumar L. Patel, Xinhua Liang

Chemical and Biochemical Engineering Faculty Research & Creative Works

We demonstrate that the highly active but unstable nanostructured intermediate-temperature solid oxide fuel cell cathode, La0.6Sr0.4CoO3-δ (LSCo), can retain its high oxygen reduction reaction (ORR) activity with exceptional stability for 4000 h at 700 C by overcoating its surfaces with a conformal layer of nanoscale ZrO2 films through atomic layer deposition (ALD). The benefits from the presence of the nanoscale ALD-ZrO2 overcoats are remarkable: a factor of 19 and 18 reduction in polarization area-specific resistance and degradation rate over the pristine sample, respectively. The unique multifunctionality of the ALD-derived nanoscaled ZrO2 overcoats, …


A Probabilistic Encryption Based Min/Max Computation In Wireless Sensor Networks, Bharath K. Samanthula, Wei Jiang, Sanjay Madria Sep 2013

A Probabilistic Encryption Based Min/Max Computation In Wireless Sensor Networks, Bharath K. Samanthula, Wei Jiang, Sanjay Madria

Computer Science Faculty Research & Creative Works

Wireless sensor networks (WSNs) have wide range of applications in military, health-monitoring, smart-home applications, and in other commercial environments. The computation of data aggregation functions like MIN/MAX is one of the commonly used tasks in many such WSN applications. However, due to privacy issues in some of these applications, the individual sensor readings should be kept secret from others. That is, the base station should be the only entity who should receive the output of MIN/MAX function and the individual sensor readings should not be revealed either to other sensor nodes or to the root node for confidentiality reasons. Existing …


Efficient Spatio-Temporal Information Fusion In Sensor Networks, Brijesh Kashyap Chejerla, Sanjay K. Madria Sep 2013

Efficient Spatio-Temporal Information Fusion In Sensor Networks, Brijesh Kashyap Chejerla, Sanjay K. Madria

Computer Science Faculty Research & Creative Works

Making the sensor data look more meaningful in its representation of an observed entity is the primary goal of sensor data fusion. Due to the energy constraint on sensors, there exists a need for algorithms that minimize the fusion cost while maintaining the validity of the data sent to the base station. Maintaining validity is even more difficult when we have a limited knowledge of the factors that govern an observed sensor entity. To achieve this goal, we modeled the uncertainties in sensor data and fed them into the system, employing recursive data estimation. By doing so, we considered the …


The Missouri Miner, September 5, 2013 Sep 2013

The Missouri Miner, September 5, 2013

The Missouri Miner Newspaper

No abstract provided.


Additivity Of Strengthening Mechanisms In Ultrafine Grained Al-Mg-Sc Alloy, N. Kumar, R. S. Mishra Sep 2013

Additivity Of Strengthening Mechanisms In Ultrafine Grained Al-Mg-Sc Alloy, N. Kumar, R. S. Mishra

Materials Science and Engineering Faculty Research & Creative Works

In the light of unique and anomalous properties of ultrafine grained (UFG) alloys, an effort was made to develop a predictive capability of the yield strength (YS) of UFG Al-Mg-Sc alloy. UFG microstructure was introduced using friction stir processing. Microstructural characterization of grain size, dislocations, and nano-sized Al3(Sc,Zr) particles was carried out using electron backscatter diffraction and transmission electron microscope. The contribution from Peierls-Nabarro stress, solid solution strengthening, precipitation strengthening, grain boundary strengthening, and dislocation strengthening were assessed using existing strengthening models. Additivity law to predict the YS of the alloy was chosen based on the microstructural state of the …


Argument Placement Recommendation And Relevancy Assessment In An Intelligent Argumentation System, Feng Li, Nian Liu, Wei Jiang, Xiaoqing Liu Sep 2013

Argument Placement Recommendation And Relevancy Assessment In An Intelligent Argumentation System, Feng Li, Nian Liu, Wei Jiang, Xiaoqing Liu

Computer Science Faculty Research & Creative Works

Argumentation is a critical process for many social activities that need collaborative intelligence. Existing intelligent argumentation systems allow multiple stakeholders from distributed geographical locations to share their opinions and contribute to a decision-making process. In the current system, a stakeholder needs to read all the existing arguments posted by other stakeholders before contributing his/her own ideas/arguments. However, when information accumulates and an argumentation network becomes considerably large, it will cost tremendous time and effort for the stakeholder to read and comprehend all existing arguments. In this paper, we propose methods to implement a recommendation component built into an intelligent argumentation …


Mitigating Event Confidentiality Violations In Smart Grids: An Information Flow Security-Based Approach, Thoshitha T. Gamage, Thomas P. Roth, Bruce M. Mcmillin, Mariesa L. Crow Sep 2013

Mitigating Event Confidentiality Violations In Smart Grids: An Information Flow Security-Based Approach, Thoshitha T. Gamage, Thomas P. Roth, Bruce M. Mcmillin, Mariesa L. Crow

Computer Science Faculty Research & Creative Works

Modern smart grids, by and large, merge physical interconnections and cyber controllers. Invariably, this tight coupling results in cyber commands manifesting in the physical layer as observable changes, leading to possible disclosure of sensitive system settings. Thus, cyber event confidentiality of the smart grid is violated. Attacks on confidentiality can ultimately lead to integrity and availability attacks; with adequate knowledge of the system topology, internal settings, and how the physical layer responds to cyber commands, a malicious adversary gains knowledge to attack the system. This work shows how to develop self-obfuscating systems based on information flow security properties that can …


Compression Properties And Damage Mechanisms Of Stitched Carbon/Epoxy Composites, Arief Yudhanto, Naoyuki Watanabe, Yutaka Iwahori, Hikaru Hoshi Sep 2013

Compression Properties And Damage Mechanisms Of Stitched Carbon/Epoxy Composites, Arief Yudhanto, Naoyuki Watanabe, Yutaka Iwahori, Hikaru Hoshi

Mechanical and Aerospace Engineering Faculty Research & Creative Works

The effect of stitching on compression properties and damage mechanisms of carbon/epoxy composites is experimentally investigated. The waviness angle of load-bearing tows is also measured in both in-plane and out-of-plane directions, and a correlation is made between compression strength and the waviness angle. It is found that stitching generally reduces the compression strength of carbon/epoxy composites of up to 16%. The average compression strength has a stronger correlation with the in-plane waviness angle rather than the out-of-plane one. A comparative damage assessment, which studies the initiation, progression and final failure in stitched and unstitched composites under axial compression, reveals that …


Quantum Computing Circuits, Cheng-Hsiao Wu, Casey Andrew Cain Sep 2013

Quantum Computing Circuits, Cheng-Hsiao Wu, Casey Andrew Cain

Electrical and Computer Engineering Faculty Research & Creative Works

A system for performing digital operations, including a first device configured to transform a digital input into one or more signals, at least one AB ring, the at least one AB ring irreducibly-coupled and configured to include at least three terminals, a second device configured to read a portion of a signal expressed upon two or more of the at least three terminals, and a third device configured to transform the portion of the signal expressed upon two or more of the at least three terminals into a digital output, the third device operationally connected to the second device.


The Use Of Development History In Software Refactoring Using A Multi-Objective Evolutionary Algorithm, Ali Ouni, Marouane Kessentini, Houari Sahraoui, Mohamed Salah Hamdi Sep 2013

The Use Of Development History In Software Refactoring Using A Multi-Objective Evolutionary Algorithm, Ali Ouni, Marouane Kessentini, Houari Sahraoui, Mohamed Salah Hamdi

Computer Science Faculty Research & Creative Works

One of the widely used techniques for evolving software systems is refactoring, a maintenance activity that improves design structure while preserving the external behavior. Exploring past maintenance and development history can be an effective way of finding refactoring opportunities. Code elements which undergo changes in the past, at approximately the same time, bear a good probability for being semantically related. Moreover, these elements that experienced a huge number of refactoring in the past have a good chance for refactoring in the future. In addition, the development history can be used to propose new refactoring solutions in similar contexts. In this …


Report On Laboratory Testing Of Fastening Of Cfs Track To Concrete Base Materials With Pafs, With Revision, Ricardo Ramirez, Roger A. Laboube Sep 2013

Report On Laboratory Testing Of Fastening Of Cfs Track To Concrete Base Materials With Pafs, With Revision, Ricardo Ramirez, Roger A. Laboube

American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)

The 2012 AISI S100 Section E5 includes design provisions for power-actuated fasteners (PAFs) for connection of cold-formed steel (CFS) to steel base materials. However, a need exists to develop an in-depth understanding when CFS wall tracks are attached to concrete base materials as part of interior and exterior wall framing applications. Current code requirements, as specified by ASCE 7 – 2010 Chapter 13 (Exception to Section 13.4.5), limit individual PAFs in nonstructural component connections as part of distributed systems, to a sustained tension service load of 90 lbs in concrete and 250 lbs in steel in Seismic Design Categories D, …


Missouri S&T Magazine Fall/Winter 2013, Missouri S&T Marketing And Communications Department, Miner Alumni Association Sep 2013

Missouri S&T Magazine Fall/Winter 2013, Missouri S&T Marketing And Communications Department, Miner Alumni Association

Missouri S&T Magazine

No abstract provided.


Comparison Of A Sio2-Cao-Zno-Sro Glass Polyalkenoate Cement To Commercial Dental Materials: Ion Release, Biocompatibility And Antibacterial Properties, A. W. Wren, A. Coughlan, M. M. Hall, M. J. German, Mark R. Towler Sep 2013

Comparison Of A Sio2-Cao-Zno-Sro Glass Polyalkenoate Cement To Commercial Dental Materials: Ion Release, Biocompatibility And Antibacterial Properties, A. W. Wren, A. Coughlan, M. M. Hall, M. J. German, Mark R. Towler

Chemical and Biochemical Engineering Faculty Research & Creative Works

Ion Release and biocompatibility of a CaO-SrO-ZnO-SiO2 (BT 101) based glass polyalkenoate cement (GPC) was compared against commercial GPCs, Fuji IX and Ketac Molar. The radiopacity (R) was similar for each material, 2.0-2.8. Ion release was evaluated on each material over 1, 7, 30 and 90 days. BT 101 release included Ca (23 mg/L), Sr (23 mg/L) Zn (13 mg/L), Si (203 mg/L). Fuji IX release includes Ca (0.7 mg/L), Al (3 mg/L) Si (26 mg/L), Na (60 mg/L) and P (0.5 mg/L) while Ketac Molar release includes Ca (1 mg/L), Al (0.6 mg/L) Si (23 mg/L), Na (76 …


Parameter Estimation For Compact Binary Coalescence Signals With The First Generation Gravitational-Wave Detector Network, J. Aasi, Marco Cavaglia, For Full List Of Authors, See Publisher's Website. Sep 2013

Parameter Estimation For Compact Binary Coalescence Signals With The First Generation Gravitational-Wave Detector Network, J. Aasi, Marco Cavaglia, For Full List Of Authors, See Publisher's Website.

Physics Faculty Research & Creative Works

Compact binary systems with neutron stars or black holes are one of the most promising sources for ground-based gravitational-wave detectors. Gravitational radiation encodes rich information about source physics; thus parameter estimation and model selection are crucial analysis steps for any detection candidate events. Detailed models of the anticipated waveforms enable inference on several parameters, such as component masses, spins, sky location and distance, that are essential for new astrophysical studies of these sources. However, accurate measurements of these parameters and discrimination of models describing the underlying physics are complicated by artifacts in the data, uncertainties in the waveform models and …


Laboratory Study On The Mobility Of Major Species In Fly Ash-Brine Co-Disposal Systems: Up-Flow Percolation Test, O. O. Fatoba, L. F. Petrik, R. O. Akinyeye, W. M. Gitari, E. I. Iwuoha Sep 2013

Laboratory Study On The Mobility Of Major Species In Fly Ash-Brine Co-Disposal Systems: Up-Flow Percolation Test, O. O. Fatoba, L. F. Petrik, R. O. Akinyeye, W. M. Gitari, E. I. Iwuoha

Mining Engineering Faculty Research & Creative Works

Apart from the generation of fly ash, brine (hyper-saline wastewater) is also a waste material generated in South African power stations as a result of water re-use. These waste materials contain major species such as Al, Si, Na, K, Ca, Mg, Cl and SO4. The co-disposal of fly ash and brine has been practiced by some power stations in South Africa with the aim of utilizing the fly ash to capture the salts in brine. The effect of the chemical interaction of the species contained in both fly ash and brine, when co-disposed, on the mobility of species in the …


Visual Attention And The Neuroimage Bias, Denise A. Baker, N. J. Schweitzer, Evan F. Risko, Jillian M. Ware Sep 2013

Visual Attention And The Neuroimage Bias, Denise A. Baker, N. J. Schweitzer, Evan F. Risko, Jillian M. Ware

Psychological Science Faculty Research & Creative Works

Several highly-cited experiments have presented evidence suggesting that neuroimages may unduly bias laypeople’s judgments of scientific research. This finding has been especially worrisome to the legal community in which neuroimage techniques may be used to produce evidence of a person’s mental state. However, a more recent body of work that has looked directly at the independent impact of neuroimages on layperson decision-making (both in legal and more general arenas), and has failed to find evidence of bias. To help resolve these conflicting findings, this research uses eye tracking technology to provide a measure of attention to different visual representations of …


Study Of A Molten Carbonate Fuel Cell Combined Heat, Hydrogen And Power System: End-Use Application, Tarek A. Hamad, Abdulhakim Amer A. Agll, Yousif M. Hamad, Sushrut Bapat, Mathew Thomas, Kevin B. Martin, John W. Sheffield Sep 2013

Study Of A Molten Carbonate Fuel Cell Combined Heat, Hydrogen And Power System: End-Use Application, Tarek A. Hamad, Abdulhakim Amer A. Agll, Yousif M. Hamad, Sushrut Bapat, Mathew Thomas, Kevin B. Martin, John W. Sheffield

Engineering Management and Systems Engineering Faculty Research & Creative Works

To address the problem of fossil fuel usage and high greenhouse gas emissions at the Missouri University of Science and Technology campus, using of alternative fuels and renewable energy sources can lower energy consumption and greenhouse gas emissions. Biogas, produced by anaerobic digestion of wastewater, organic waste, agricultural waste, industrial waste, and animal by-products is a potential source of renewable energy. In this work, we have discussed the design of CHHP system for the campus using local resources. An energy flow and resource availability study is performed to identify the type and source of feedstock required to continuously run the …


Modeling The Effect Of Apc Truncation On Destruction Complex Function In Colorectal Cancer Cells, Dipak Barua, William S. Hlavacek Sep 2013

Modeling The Effect Of Apc Truncation On Destruction Complex Function In Colorectal Cancer Cells, Dipak Barua, William S. Hlavacek

Chemical and Biochemical Engineering Faculty Research & Creative Works

In colorectal cancer cells, APC, a tumor suppressor protein, is commonly expressed in truncated form. Truncation of APC is believed to disrupt degradation of β-catenin, which is regulated by a multiprotein complex called the destruction complex. The destruction complex comprises APC, Axin, β-catenin, serine/threonine kinases, and other proteins. The kinases CK1α and GSK-3β, which are recruited by Axin, mediate phosphorylation of β-catenin, which initiates its ubiquitination and proteosomal degradation. The mechanism of regulation of β-catenin degradation by the destruction complex and the role of truncation of APC in colorectal cancer are not entirely understood. Through formulation and analysis of a …


Multi-Axis Planning Of A Hybrid Material Deposition And Removal Combined Process, J. Zhang, Frank W. Liou Sep 2013

Multi-Axis Planning Of A Hybrid Material Deposition And Removal Combined Process, J. Zhang, Frank W. Liou

Mechanical and Aerospace Engineering Faculty Research & Creative Works

No abstract provided.