Optimization Of Bioethanol Production, Engine Performance And Exhaust Emissions From Manihot Glaziovii And Sweet Sorghum In A Spark Ignition Engine,
2020
Universiti Malaya
Optimization Of Bioethanol Production, Engine Performance And Exhaust Emissions From Manihot Glaziovii And Sweet Sorghum In A Spark Ignition Engine, Sebayang Abdi Hanra
Student Works (2020-2029)
The ever-increasing fossil fuel consumption over the years is attributable to economic and population growth, which in turn, increases greenhouse gas emissions. Bioethanol is one of the promising solutions to address the depletion of fossil fuels as well as environmental problems. Manihot glaziovii tubers and sweet sorghum grains are inedible feedstocks that can be used for bioethanol production. The carbohydrate content (70%) of these biomasses makes them suitable as feedstocks for bioethanol production. In this study, enzymatic hydrolysis (liquefaction and saccharification) was used to obtain the reduction of sugars. The enzymes α-amylase from Bacillus licheniformis Type XII-A and amyloglucosidase from …
Enhancement Of Graphene Biocompatibility As A Potential Nano-Carrier For Drug Delivery Applications Using Natural Deep Eutectic Solvent,
2020
Universiti Malaya
Enhancement Of Graphene Biocompatibility As A Potential Nano-Carrier For Drug Delivery Applications Using Natural Deep Eutectic Solvent, Zainal Abidin Mohamad Hamdi
Student Works (2020-2029)
Graphene has attracted massive interest in numerous biomedical applications such as anti-cancer therapy, drug delivery, bio-imaging and gene delivery. Therefore, it is important to ensure that graphene is nontoxic, and that its cellular biological behavior is safe and biocompatible. Herein, a new route was used to enhance the biocompatibility of graphene as a nano-carrier for potential drug delivery applications, using different compositions of natural deep eutectic solvents (DESs) as functionalizing agents, owing to their capability to introduce various functional groups and surface modifications. To meet this end, eight different combinations of binary and ternary DESs were synthesized using choline chloride …
Investigations Of Air-Water Multiphase Flow In Tubes: Computational Fluid Dynamics,
2020
Universiti Malaya
Investigations Of Air-Water Multiphase Flow In Tubes: Computational Fluid Dynamics, Wei Hong Goo
Student Works (2020-2029)
Mixing is a very crucial process in many industries, such as food processing industry, minerals processing industry, petrochemicals and refining industry, pulp and paper industry, polymer industry, pharmaceuticals industry and many more. There are different types of mixing, such as liquid-gas mixing, liquid-liquid mixing, solid-liquid mixing and many more. The definition of multiphase flow is the simultaneous flow of materials with multiple thermodynamic phases. A lot of process industries require multiphase flows during operation. Bubbly flow is defined as the flow of liquids that contains dispersed gas bubbles. One of the main applications of multiphases flows and bubbly flows is …
Study Of Heat Transfer And Friction Loss Of Nanofluid Suspension Flow In Square Pipe Heat Exchanger,
2020
Universiti Malaya
Study Of Heat Transfer And Friction Loss Of Nanofluid Suspension Flow In Square Pipe Heat Exchanger, Krishnan Jayprasanth
Student Works (2020-2029)
An experimentational analysis was done to evaluate heat transfer features of graphene oxide (GO) nanofluid inside the cross section of square cross tube that was exposed to a uniform constant heat flux of the test segments. Lately huge figures of researches have been are proceeded out to examine the outcome of nanofluid in augmentation of the heat transfer rate in numerous heat exchangers particularly using hummer method to attain GO. In this case, advanced hummer method was used to obtain GO and further analyses the effect of the nanofluids. The viscosity and thermal conductivity for the (GO) nanofluids at the …
Thermodynamic Analysis And Optimization Of Organic Rankine Cycles Using 1-Butylpyridinium Tetrafluoroborate As A Geothermal Fluid,
2020
Universiti Malaya
Thermodynamic Analysis And Optimization Of Organic Rankine Cycles Using 1-Butylpyridinium Tetrafluoroborate As A Geothermal Fluid, Kazemi Shabnam
Student Works (2020-2029)
Organic Rankine cycle (ORC) is a promising technology for electricity generation by utilizing heat sources at low to moderate temperature that ranges between 80-350° C. In the present work, an ionic liquid (1-butylpyridinium tetrafluoroborate, C9H14NBF4), a known green chemical and non-volatile compound with good thermal and chemical stability, significant heat capacity, low vapor pressure and a wide liquid temperature range (25 to 459 °C), is utilized as a geothermal fluid. Simulation and optimization were conducted for a basic organic Rankine cycle (basic ORC), a regenerative organic Rankine cycle (RORC) and a two-stage evaporative organic Rankine cycle (TSORC) by maximizing exergy …
Waste Cooking Oil Classification Using Artificial Intelligence Technology,
2020
Universiti Malaya
Waste Cooking Oil Classification Using Artificial Intelligence Technology, Kar Sin Lau
Student Works (2020-2029)
Palm oil – one of the most common edible oil consumed in Malaysia. It is because Malaysia is one of the countries which supply palm oil to the global market and it is cheap to obtain for the consumer in Malaysia. Most of the Malaysian consume it via food preparation such as deep-frying and cooking. However, due to widely available for Malaysians, consumers also lacking awareness in dealing after using the edible oil. Most of the household consumers discard excess waste cooking oil (WCO) into sewage and with courtesy, some of them stored them in containers and sell to NGOs. …
Study Of Heat Transfer And Friction Loss Of Nanofluid Suspension Flow In Circular Pipe Heat Exchanger,
2020
Universiti Malaya
Study Of Heat Transfer And Friction Loss Of Nanofluid Suspension Flow In Circular Pipe Heat Exchanger, Ramadas Sandru
Student Works (2020-2029)
This stated experiment focused on the study of convective heat transfer and friction loss in a circular flow passage for Graphene oxide-based nanofluids which are consist of Graphene Oxide/Distilled water with their different wt. % concentrations. These GO/DW based nanofluids where been prepared by using a facile two-step method, while the GO particles were synthesized by a modified hummer method. Four different (0.025, 0.05, 0.075, and 0.1 wt. %) were produced by dispersing graphene particles in distilled water under high probe sonication. The GO/DW based nanofluids flowing in a horizontal shell and tube heat exchanger counter flow under turbulent flow …
Quantitative Risk Assessment And Dispersion Modelling Using Aloha For Chlorine Gas Handling Facility,
2020
Universiti Malaya
Quantitative Risk Assessment And Dispersion Modelling Using Aloha For Chlorine Gas Handling Facility, Kusala Uvaraja
Student Works (2020-2029)
Malay-Sino Chemical Industries Sdn Bhd (Lahat) is a chlor-alkali industry consist of Emergency Chlorine Gas Handling Facility (ECGHF) which have the tendency to affect the plant workers and nearby residential area in the event of accidental chlorine gas release. HAZOP tool with risk assessment was used to identify the hazard and quantifying the hazards in order to prioritize the recommendations at the ECGHF. Possible incident scenario was selected from the HAZOP outcome which was the chlorine gas release from the stack due to scrubbing flow failure. The consequences of the released chlorine gas to the atmosphere was simulated by using …
Cfd Modelling Of Multiphase Flow In Static Mixer,
2020
Universiti Malaya
Cfd Modelling Of Multiphase Flow In Static Mixer, Silverrajan Viknesvaran
Student Works (2020-2029)
Modelling of Multiphase flow through a Kenics static mixer were presented in this paper. Multiphase mixing is a challenging process in industries such as pharmaceutical, food and petroleum since two-different phases can be immiscible towards each other. Stirred tank mixing is the most common method used in industries. However, this type of method costs a lot in terms of energy and manpower specially when mixing immiscible liquids. Hence, The Kenics Static Mixer could be a good solution for multiphase mixing when its correctly configured and studied. Two phases used in this paper were aqueous solution: refined CMC as continuous phase …
Air Quality Improvement During Triple-Lockdown In The Coastal City Of Kannur, Kerala To Combat Covid-19 Transmission,
2020
Erode Arts & Sci Coll, Dept Phys, Erode, Tamil Nadu, India
Air Quality Improvement During Triple-Lockdown In The Coastal City Of Kannur, Kerala To Combat Covid-19 Transmission, C. T. Resmi, T. Nishanth, M. K. Satheesh Kumar, M. G. Manoj, M. Balachandramohan, K. T. Valsaraj
Faculty Publications
The novel SARS-CoV-2 coronavirus that emerged in the city of Wuhan, China, last year has since become the COVID-19 pandemic across all continents. To restrict the spread of the virus pandemic, the Government of India imposed a lockdown from 25 March 2020. In India, Kannur district was identified as the first "hotspot" of virus transmission and a "triple-lockdown" was implemented for a span of twenty days from 20 April 2020. This article highlights the variations of surface O-3, NO, NO2, CO, SO2, NH3, VOC's, PM10, PM2.5 and meteorological parameters at the time of pre-lockdown, lockdown and triple-lockdown days at Kannur …
Enhancing Practical Tractability Of Lyapunov-Based Economic Model Predictive Control,
2020
Wayne State University
Enhancing Practical Tractability Of Lyapunov-Based Economic Model Predictive Control, Helen Durand, Dominic Messina
Chemical Engineering and Materials Science Faculty Research Publications
Lyapunov-based economic model predictive control (LEMPC) is an optimization-based control design that computes economically-optimal control actions for a process while maintaining the closed-loop state within a bounded region of state-space; however, it may be difficult to design in practice without closed-loop simulations, as it requires an auxiliary stabilizing controller, Lyapunov function, and a number of sets to be developed to ensure closed-loop stability. Practical application of this method could benefit from methods which make it more likely that, without simulations to identify aspects of the control design that would provide stability, controller parameters can be selected that would maintain stability. …
Mitigating Cyberattack Impacts Using Lyapunov-Based Economic Model Predictive Control,
2020
Wayne State University
Mitigating Cyberattack Impacts Using Lyapunov-Based Economic Model Predictive Control, Helen Durand, Matthew Wegener
Chemical Engineering and Materials Science Faculty Research Publications
One of the pressing concerns for next-generation manufacturing is the development of techniques for guaranteeing that a control system is cyberattack-resilient in the sense that even if a cyberattack is successful at breaking information technology-based defenses (e.g., it succeeds at providing a false sensor measurement to the controller), closed-loop stability is still maintained. Our prior work has provided a nonlinear systems definition for cyberattacks. This work explores how a nonlinear systems perspective on cyberattack-resilience for false sensor measurements provided to controllers may allow an economic model predictive control (EMPC) formulation known as Lyapunov-based EMPC (LEMPC) to be designed such that …
Lyapunov-Based Economic Model Predictive Control With Taylor Series State Approximations,
2020
Wayne State University
Lyapunov-Based Economic Model Predictive Control With Taylor Series State Approximations, Keshav Kasturi Rangan, Helen Durand
Chemical Engineering and Materials Science Faculty Research Publications
A method for integrating optimization and control during on-line process operation is known as economic model predictive control (EMPC). EMPC optimizes a general cost function which reflects process economics subject to a model of the process. One formulation of EMPC which can maintain closed-loop stability in the presence of sufficiently small disturbances is Lyapunov-based EMPC (LEMPC). In this work, we make precise connections between closed-loop stability considerations under LEMPC and numerical approximations (via Taylor series) of the solution of the nonlinear dynamic model of the process used in the controller. A chemical process example is utilized to demonstrate the concepts …
Effect Of Dilution On Sedimentational Separation Of Bacteria From Blood,
2020
Brigham Young University
Effect Of Dilution On Sedimentational Separation Of Bacteria From Blood, Clifton M. Anderson, William G. Pitt
Faculty Publications
Bacteria must be separated from septic whole blood in preparation for rapid antibiotic susceptibility tests. This work improves upon past work isolating bacteria from whole blood by exploring an important experimental factor: Whole blood dilution. Herein, we use the continuity equation to model red blood cell sedimentation and show that overall spinning time decreases as the blood is diluted. We found that the bacteria can also be captured more efficiently from diluted blood, up to approximately 68 ± 8% recovery (95% confidence interval). However, diluting blood both requires and creates extra fluid that end users must handle; an optimal dilution, …
Natural Latex-Capped Silver Nanoparticles For Two-Way Electrochemical Displacement Sensing Of Eriochrome Black T,
2020
Menoufia Company for Water and Wastewater, Holding Company for Water and Wastewater, Menoufia 32514, Egypt
Natural Latex-Capped Silver Nanoparticles For Two-Way Electrochemical Displacement Sensing Of Eriochrome Black T, Ziad Khalifa, Moustafa Zahran Dr, Magdy Zahran Prof, Magdi Abdel Azzem Prof
Chemical Engineering
No abstract provided.
Synthesis And Study Of Amide Solein Based On Oleic Acid And Piperidine,
2020
Tashkent Chemical-technological Institute
Synthesis And Study Of Amide Solein Based On Oleic Acid And Piperidine, N.S. Matkarimova, O.S. Maksumova, S.T. Matkarimov, L.B. Marjorie
Technical science and innovation
The article presents results for the preparation of salts of sulfated amides based on oleic acid and piperidine. The products were synthesized in several steps: the first step of the reaction of oleic acid with piperidine, second step of sulphonation with sulfuric acid of the obtained compounds, the third step of the reaction of NH4OH and (HOCH2CH2) 2NH. The structure of the synthesized salts is confirmed by the methods of IR-, NMR-spectral analyses, and the method of high-performance liquid chromatography. The synthesized salts at room temperature are brown crystals. Some of their physical and …
Individual And Simultaneous Voltammetric Determination Of Ultra- Trace Environmental Contaminant Dihydroxybenzene Isomers Based On A Composite Electrode Sandwich-Like Structure,
2020
Electrochemistry Research Laboratory, Physics and Mathematics Engineering Department, Faculty of Electronic Engineering, Menoufia University, Menouf
Individual And Simultaneous Voltammetric Determination Of Ultra- Trace Environmental Contaminant Dihydroxybenzene Isomers Based On A Composite Electrode Sandwich-Like Structure, Ziad Khalifa, Khalid Hassan Dr, Mohamed Fathi Abo Oura Mr, Abla Hathoot Prof, Magdi Abdel Azzem Prof
Chemical Engineering
An advanced electroanalytical technique for the simultaneous assessment of environmental contaminant dihydroxybenzene isomers, catechol (CC), hydroquinone (HQ), and resorcinol (RC), has been investigated using palladium nanoparticles (PdNPs) incorporated onto a poly(1,5-diaminonaphthalene) (DAN) matrix over a glassy carbon electrode (GCE). Concurrently, these types of phenols can be assessed by the PdDAN/GCE modified electrode employing square wave voltammetry and cyclic voltammetry (CV) techniques under optimal conditions. This modified electrode has demonstrated linear responses for CC, HQ, and RC from 50.0 to 1000.0 mM; concomitantly, low detection limits of 0.22, 0.22, and 0.47 nM and low quantification limits of 0.740, 0.758, and 1.590 …
The Role Of Electrolytically Deposited Palladium And Platinum Metal Nanoparticles Dispersed Onto Poly(1,8- Diaminonaphthalene) For Enhanced Glucose Electrooxidation In Biofuel Cells,
2020
Electrochemistry Research Laboratory, Physics and Mathematics Engineering Department, Faculty of Electronic Engineering, Menoufia University, Menouf
The Role Of Electrolytically Deposited Palladium And Platinum Metal Nanoparticles Dispersed Onto Poly(1,8- Diaminonaphthalene) For Enhanced Glucose Electrooxidation In Biofuel Cells, Ziad Khalifa, Khalid Hassan Dr, Ghada Elhaddad Dr, Magdi Abdel Azzem Prof
Chemical Engineering
Glucose biofuel cells are one of the promising power supplies with a competent long-term stability and power density. In this respect, catalysts of palladium (Pd) and platinum (Pt) metal nanoparticles film coated electrode were fabricated for biofuel cell. The Pt and Pd particles were electrochemically deposited onto glassy carbon (GC) electrode modified with poly(1,8-diaminonaphthalene), (p-1,8-DAN), via single or layer-by-layer electrodeposition. In results, Pt/p-1,8-DAN/GC, Pd/p-1,8-DAN/GC, Pt-Pd/p-1,8- DAN/GC and Pd-Pt/p-1,8-DAN/GC shell-core catalysts were fabricated and characterized by several ana- lytical techniques such as AFM, EDX,SEM, TEM, and XPS, in addition to electrochemical methods. Their catalytic electrooxidation behaviors of glucose were investigated in …
Plasma And Serum Proteins Bound To Nanoceria: Insights Into Pathways By Which Nanoceria May Exert Its Beneficial And Deleterious Effects In Vivo,
2020
University of Kentucky
Plasma And Serum Proteins Bound To Nanoceria: Insights Into Pathways By Which Nanoceria May Exert Its Beneficial And Deleterious Effects In Vivo, D. Allan Butterfield, Binghui Wang, Peng Wu, Sarita S. Hardas, Jason M. Unrine, Eric A. Grulke, Jian Cai, Jon B. Klein, William M. Pierce, Robert A. Yokel, Rukhsana Sultana
Chemistry Faculty Publications
Nanoceria (CeO2, cerium oxide nanoparticles) is proposed as a therapeutic for multiple disorders. In blood, nanoceria becomes protein-coated, changing its surface properties to yield a different presentation to cells. There is little information on the interaction of nanoceria with blood proteins. The current study is the first to report the proteomics identification of plasma and serum proteins adsorbed to nanoceria. The results identify a number of plasma and serum proteins interacting with nanoceria, proteins whose normal activities regulate numerous cell functions: antioxidant/detoxification, energy regulation, lipoproteins, signaling, complement, immune function, coagulation, iron homeostasis, proteolysis, inflammation, protein folding, protease inhibition, adhesion, protein/RNA …
Survey Of 8 Uav Set-Covering Algorithms For Terrain Photogrammetry,
2020
Brigham Young University
Survey Of 8 Uav Set-Covering Algorithms For Terrain Photogrammetry, Joshua Hammond, Cory Vernon, Trent Okeson, Benjamin Barrett, Samuel Arce, Valerie Newell, Joseph Janson, Kevin Franke, John Hedengren
Faculty Publications
Remote sensing with unmanned aerial vehicles (UAVs) facilitates photogrammetry for environmental and infrastructural monitoring. Models are created with less computational cost by reducing the number of photos required. Optimal camera locations for reducing the number of photos needed for structure-from-motion (SfM) are determined through eight mathematical set-covering algorithms as constrained by solve time. The algorithms examined are: traditional greedy, reverse greedy, carousel greedy (CG), linear programming, particle swarm optimization, simulated annealing, genetic, and ant colony optimization. Coverage and solve time are investigated for these algorithms. CG is the best method for choosing optimal camera locations as it balances number of …
