Meta-Analysis Of Non-Reactive Phosphorus In Water, Wastewater, And Sludge, And Strategies To Convert It For Enhanced Phosphorus Removal And Recovery,
2018
Marquette University
Meta-Analysis Of Non-Reactive Phosphorus In Water, Wastewater, And Sludge, And Strategies To Convert It For Enhanced Phosphorus Removal And Recovery, Kaushik Venkiteshwaran, Patrick J. Mcnamara, Brooke K. Mayer
Civil and Environmental Engineering Faculty Research and Publications
Current and future trends indicate that mining of natural phosphorus (P) reserves is occurring faster than natural geologic replenishment. This mobilization has not only led to P supply concerns, but has also polluted many of the world's freshwater bodies and oceans. Recovery and reuse of this nuisance P offers a long-term solution simultaneously addressing mineral P accessibility and P-based pollution. Available physical, chemical, and biological P removal/recovery processes can achieve low total P (TP) concentrations (≤100 μg/L) and some processes can also recover P for direct reuse as fertilizers (e.g., struvite). However, as shown by our meta-analysis of over 20,000 …
Bandy, Richard Lewis (Sc 3305),
2018
Western Kentucky University
Bandy, Richard Lewis (Sc 3305), Manuscripts & Folklife Archives
Manuscript Collection Finding Aids
Finding aid only for Manuscripts Small Collection 3305. Letter, 9 November 2018, of Richard L. Bandy, Bowling Green, Kentucky, to Mary Alice Oliver, in response to her article in a local magazine about Massey’s Mill in Warren County, Kentucky. Bandy provides recollections of a water-powered mill located on property owned by his family on Middle Fork Creek at Drake, Kentucky. Includes two photographs of the mill, a map showing its location, and Oliver’s reply to the letter.
Evaluation Of Moisture Susceptibility Of Asphalt Binders Using Atomic Force Microscopy (Afm),
2018
Arkansas State University
Evaluation Of Moisture Susceptibility Of Asphalt Binders Using Atomic Force Microscopy (Afm), Sumon Roy
Student Theses and Dissertations
Stripping related moisture damage in asphalt pavement has been recognized as a serious concern to the state Departments of Transportations (DOTs). The current moisture sensitivity tests methods are mostly conducted at micro and macro levels and focused on qualitative measurements. In this study, an atomic level investigation is done to quantify the moisture damage of the asphalt binders. Binders used in this study include two Performance Grade (PG) base binders along with their modified counterparts using polyphosphoric acid (PPA), styrene-butadiene-styrene (SBS), and SBS plus PPA. Three different types of liquid anti-stripping agents (LAAs) are also evaluated in this study. The …
Community-Scale Water Treatment Systems In The Dominican Republic,
2018
Purdue University
Community-Scale Water Treatment Systems In The Dominican Republic, Jonathan Racey, Annabelle Papai, Elise Fischer, Becca Johnson
Engagement & Service-Learning Summit
Engagement and Service-Learning Summit: Reciprocal and Sustainable Partnerships
Conversion Of Heat Energy From Cooling Water Of Diesel Engine To Electrical Energy Using Thermoelectric Generator,
2018
Department of Mechanical Engineering, Politeknik Negeri Batam, Batam 29461, Indonesia
Conversion Of Heat Energy From Cooling Water Of Diesel Engine To Electrical Energy Using Thermoelectric Generator, Muhammad Hasan Albana
Makara Journal of Technology
This research objective is to convert heat from the radiator fluid of a diesel engine to electrical energy by utilizing a thermoelectric generator (TEG). The TEG consists of 20 semiconductors (TE modules) and is equipped with a heat sink. The research shows that using the TEG, the heat of radiator fluid can be converted to electrical energy, although the electricity generated is small. The maximum electrical voltage generated by the TEG when modules were connected in series was 10 volts. When the TE modules were connected in parallel and series-parallel, the maximum voltages generated were 2.11 and 2.53 volts, respectively. …
Immittance Response On Carboxymethyl Cellulose Blend With Polyvinyl Alcohol- Doped Ammonium Bromide-Based Biopolymer Electrolyte,
2018
Ionic Materials Team, Faculty of Industrial Sciences & Technology, University Malaysia, Pahang 26300, Malaysia
Immittance Response On Carboxymethyl Cellulose Blend With Polyvinyl Alcohol- Doped Ammonium Bromide-Based Biopolymer Electrolyte, Norfatihah Mazuki, Yuki Nagao, Ahmad Salihin Samsudin
Makara Journal of Technology
The blended carboxymethyl cellulose (CMC) and polyvinyl alcohol (PVA) doped with various compositions of ammonium bromide (NH4Br)-based solid biopolymer electrolytes (SBEs) were prepared by using the casting method. In this present work, CMC/PVA–NH4Br SBE thin film was used to investigate the electrical conductivity via electrical impedance spectroscopy. The maximum conductivity obtained was 3.21 X 10−4 S cm−1 for sample AB20 at ambient temperature (303 K), and this result might be due to the increased number of charge carrier. A dielectric study was conducted to understand the conductivity behavior. The electrical properties have been measured as a function of frequency of …
Transition Metal Dichalcogenide For High-Performance Electrode Of Supercapacitor,
2018
Material Technology Programme, Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, Lebuhraya Tun Razak, Gambang 26300, Malaysia
Transition Metal Dichalcogenide For High-Performance Electrode Of Supercapacitor, Saifful Kamaluddin Muzakir, Ahmad Salihin Samsudin, Bouchta Sahraoui
Makara Journal of Technology
Molybdenum dichalcogenides have been reviewed from the perspectives of bandgap, conductivity, and oxidation states of transition metal. Researchers have concluded that a narrow-bandgap transition metal dichalcogenide with high conductivity could be achieved for the high-performance electrode of a supercapacitor.
Automated Compilation Test System For Embedded System,
2018
School of Electrical and Electronic Engineering, University Sains Malaysia, Nibong Tebal, 14300 Penang, Malaysia
Automated Compilation Test System For Embedded System, Mohamad Khairi Ishak, Ooi Jun Hwan, Teh Jiashen, Nor Ashidi Mat Isa
Makara Journal of Technology
Embedded system testing involves testing an integration of software and hardware. It is increasingly difficult to evaluate the functionality of each module within a short time because of the increasing number of tests required. In this paper, a novel stepwise methodology involving the use of an automated compilation test system (ACTS) is proposed, to improve the quality of testing and optimize the testing time using automation. Using the proposed method, the testing coverage can be maximized, while minimizing the manual work and testing time required. This ACTS was used to automate the test code compilation and execution for different hardware …
Activated Carbon Fixed-Bed Adsorber Design For Treating Chromium Hexavalent Wastewater,
2018
Department of Chemical Engineering, Faculty of Industrial Technology, Universitas Katolik Parahyangan, Bandung 40141, Indonesia
Activated Carbon Fixed-Bed Adsorber Design For Treating Chromium Hexavalent Wastewater, Tedi Hudaya, Velicia Rachmat
Makara Journal of Technology
Pollution caused by industrial wastewater containing heavy metals is a major issue, primarily due to its toxic nature. A cheap yet effective method to deal with such wastewater is activated carbon adsorption. The purpose of this research is to evaluate and design a fixed bed adsorber with granular activated carbon as an adsorbent to process wastewater-containing chromium hexavalent (Cr 6+). Experiments show that the Langmuir isotherm fits the equilibrium data as effectively as the Freundlich isotherm. Activated carbon used in this research is Jacobi 2000® derived from bituminous coal. The lab scale inlet volumetric flow is 100 mL/h with different …
A 2.3/3.3-Ghz Dual Band Low Noise Amplifier Using Switchable Load Inductor In 0.18-Um Cmos Technology,
2018
Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia
A 2.3/3.3-Ghz Dual Band Low Noise Amplifier Using Switchable Load Inductor In 0.18-Um Cmos Technology, Taufiq Alif Kurniawan, Hsiao-Chin Chen
Makara Journal of Technology
In this paper, the dual band low noise amplifier is designed in 0.18-μm CMOS technology. By combining the proposed switchable load inductor for gain controlling and the conventional inductive source degeneration topology, narrow band gain and good impedance matching are achieved at 2.3/3.3-GHz frequency bands. The new mathematical analysis of low noise amplifier design is derived to define the component parameters of the proposed circuits. The proposed low noise amplifier exhibits gain of 17.18 dB and 15.5 dB, and noise figure of 2.67 dB and 2.52 dB at the two frequency bands, respectively.
Ascorbic Acid Degradation In Cut Lemon Packaged Using Oxygen Scavenging Active Film During Storage,
2018
Department of Agricultural Engineering, Universitas Mataram, Mataram 83125, Nusa Tenggara Barat
Ascorbic Acid Degradation In Cut Lemon Packaged Using Oxygen Scavenging Active Film During Storage, Kurniawan Yuniarto, Setyo Purwanto, Bruce Ari Welt, Anang Lastriyanto
Makara Journal of Technology
Oxygen scavenging active film can be used to prevent diffusion of free oxygen due to the action of permeation mechanism. In this study, biodegradable oxygen scavenging plastic film was designed by incorporating an antioxidant agent into plasticized polylactic acid or PLA-PEG (PPLA). Butylated hydroxytoluene (BHT) was added at different concentrations into the matrix of the PPLA film using a direct casting method to produce oxygen scavenging active film. The antiradical activity of the oxygen scavenging active film was observed, which could be applied for preventing vitamin C degradation in cut lemon during storage. The antiradical activity of the active film …
The Importance Of Usability Aspect In M-Commerce Application For Satisfaction And Continuance Intention,
2018
Department of Industrial Engineering, Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung 40132, Indonesia
The Importance Of Usability Aspect In M-Commerce Application For Satisfaction And Continuance Intention, Yassierli Yassierli, Vinsensius Vinsensius, M. S. Syed Mohamed
Makara Journal of Technology
There has been a rapid growing of m-commerce application in recent years due to the development of mobile communication technology and e-commerce business. However, only about 30% of online users, who conduct online searching, make online purchases. The low conversion rate seems to be correlated with poor usability aspect of most m-commerce applications and poor satisfaction reported by users. Research has reported that satisfaction and continuance intention in using m-commerce applications have relationships with service quality and information quality. In this study, a new model of user satisfaction and continuance intention in the context of mobile application was proposed by …
Developing A Non-Cooperative Optimization Model For Water And Crop Area Allocation Based On Leader-Follower Game,
2018
Shiraz University
Developing A Non-Cooperative Optimization Model For Water And Crop Area Allocation Based On Leader-Follower Game, Abbas Sedghamiz, Mohammad Reza Nikoo, Manouchehr Heidarpour, Mojtaba Sadegh
Civil Engineering Faculty Publications and Presentations
In this paper, a mathematical model for conflict resolution among a diverse set of agricultural water users in Golestan province, Iran, is developed. Given the bi-level nature of the distribution of power in the current problem, a combination of Leader–Follower game and Nash–Harsanyi bargaining solution method is employed to find optimal water and crop area allocations. The Golestan Regional Water Authority is the leader in this setting, controlling the total water allocations; and the agricultural sectors are the followers, competing over the allocated water. Two objectives for the leader are (i) maximizing profits, and (ii) maximizing share of green water …
A New Normal For Streamflow In California In A Warming Climate: Wetter Wet Seasons And Drier Dry Seasons,
2018
University of California
A New Normal For Streamflow In California In A Warming Climate: Wetter Wet Seasons And Drier Dry Seasons, Iman Mallakpour, Mojtaba Sadegh, Amir Aghakouchak
Civil Engineering Faculty Publications and Presentations
In this study, we investigate changes in future streamflows in California using bias-corrected and routed streamflows derived from global climate model (GCM) simulations under representative concentration pathways (RCPs): RCP4.5 and RCP8.5. Unlike previous studies that have focused mainly on the mean streamflow, annual maxima or seasonality, we focus on projected changes across the distribution of streamflow and the underlying causes. We report opposing trends in the two tails of the future streamflow simulations: lower low flows and higher high flows with no change in the overall mean of future flows relative to the historical baseline (statistically significant at 0.05 level). …
Degradation Of 3-Nitro-1, 2, 4-Trizole-5-One (Nto) In Wastewater With Uv/H2o2 Oxidation,
2018
Stevens Institute of Technology
Degradation Of 3-Nitro-1, 2, 4-Trizole-5-One (Nto) In Wastewater With Uv/H2o2 Oxidation, Amalia Terracciano, Christos Christodoulatos, Agamemnon Koutsospyros, Zhaoyu Zheng, Tsan-Liang Su, Benjamin Smolinski, Per Arienti, Xiaoguang Meng
Civil Engineering Faculty Publications
Insensitive Munition (IM) formulations contain 3-nitro-1,2,4-trizole-5-one (NTO), an energetic compound with the highest aqueous solubility (16 g L−1) among all IM explosives, including 2,4-dinitroanisole (DNAN) and 1-nitroguanidine (NQ); as a result wastewater streams from IM processing facilities can be highly contaminated and potentially toxic. The removal of energetic compounds from wastewater streams prior to their discharge in the environment is imperative, and new technology must be developed to efficiently treat high levels of NTO and other IM compounds in these streams. In this study, the treatment of NTO wastewater by a UV/H2O2 oxidation process under …
Young’S Modulus As A Measurement To Estimate Damage Related With Alkali-Silica Reaction In Concrete.,
2018
University of Arkansas, Fayetteville
Young’S Modulus As A Measurement To Estimate Damage Related With Alkali-Silica Reaction In Concrete., Anazaria J. Ortega Gonzalez
Civil Engineering Undergraduate Honors Theses
The main purpose of this research is to compare two nondestructive methods to assess Alkali-Silica reaction (ASR) in concrete. Fifteen concrete prisms were cast using aggregates with different Alkali-Silica reactivity such as Jobe sand and Van Buren sand. The change in strain, shear wave velocity and Young’s modulus were determined according to ASTM C129 and ASTM C215, respectively. This data was collected by Dillon K Self, who determined that the shear wave velocity and strain are inversely proportional. However, when single cracking in the concrete specimen transition to map cracking, the shear wave velocity dropped significantly, whereas the strain value …
Understanding Track Substructure Behavior: Field Instrumentation Data Analysis And Development Of Numerical Models,
2018
University of Illinois
Understanding Track Substructure Behavior: Field Instrumentation Data Analysis And Development Of Numerical Models, Huseyin Boler, Debakanta Mishra, Wenting Hou, Erol Tutumluer
Civil Engineering Faculty Publications and Presentations
Numerous studies have targeted using numerical modeling, field instrumentation, or combinations of both to gain insight into track substructure behavior under loading. In-depth understanding of track substructure behavior serving both passenger and freight trains is critical to developing suitable design and maintenance/rehabilitation methods to ensure adequate performance under loading. This manuscript presents findings from a recently completed study involving advanced instrumentation and numerical modeling to investigate track substructure-related issues at several problematic railroad bridge approaches in the United States. Multi-Depth Deflectometers (MDDs) were installed to measure transient as well as plastic deformations experienced by track substructure layers under loading. Strain …
Development Of Anti-Icing Airfield Heated Pavement Systems Using Solar Energy,
2018
University of Arkansas, Fayetteville
Development Of Anti-Icing Airfield Heated Pavement Systems Using Solar Energy, Joseph Daniels
Graduate Theses and Dissertations
This dissertation analyzes developing and assessing the viability of an anti-icing airfield heated pavement system using solar energy. This study includes two components, a field experimentation component and a numerical analysis component. Field experimentation investigates two systems: (1) an electrical heated pavement system with a photovoltaic energy system as its power source, and (2) a hydronic heated pavement system with a solar water-heating system as its heating source. The systems operate under an automated thermostat heating sequence for operation optimization and energy conservation. Study results found the solar systems capable of supplying enough energy to maintain pavement surface temperature above …
Utilizing The Hvsr Second Peak For Surface Wave Inversions In The Mississippi Embayment,
2018
University of Arkansas, Fayetteville
Utilizing The Hvsr Second Peak For Surface Wave Inversions In The Mississippi Embayment, Ashraf Kamal Himel
Graduate Theses and Dissertations
Ambient noise data from 24 sites within the Mississippi Embayment were analyzed to estimate the fundamental frequency using the horizontal to vertical spectral ratio (HVSR) method. The fundamental frequency ranged from 0.17 to 3.43 Hz for the tested sites. At seventeen of the sites, a second higher frequency HVSR peak, which ranged from 0.617 Hz to 2.154 Hz, was observed in addition to the fundamental HVSR peak. The second peak frequency in the HVSR curve has been attributed by previous researchers as either an odd harmonic of the fundamental peak or a shallow impedance contrast from the Memphis sand layer …
Early Life Flexural Performance And Behavior Of Reinforced Bcsa Concrete Beams,
2018
University of Arkansas, Fayetteville
Early Life Flexural Performance And Behavior Of Reinforced Bcsa Concrete Beams, Gabriel Cook
Graduate Theses and Dissertations
Belitic calcium sulfoaluminate cement (BCSA) is a hydraulic, rapid setting alternative to ordinary portland cement (OPC) with reduced energy demands and CO2 emissions. BCSA cement has numerous current and potential applications including transportation repair and precast manufacturing. Currently, limited research exists regarding the structural performance of CSA cements, restricting its potential implementation. Thus, the purpose of this research is to provide insight into the flexural performance and behavior of reinforced BCSA concrete beams. Overall, BCSA concrete had similar cracking and loading behavior to the OPC beams, with increased moment capacity for compression controlled specimens. Furthermore, BCSA concrete showed increased tensile …
