Engineering Commons^™

Tuning The Structural Properties Of Cellulose Acetate Thin Films: A Demonstration Of Confinement And Antiplasticization In Cellulose Acetate Butyrate, Keegan Reece Parkhurst

Graduate Theses - Chemical Engineering

The development of high-performance cellulose acetate thin-film composite membranes will be essential to solving the growing water scarcity problems. To do this, understanding the fundamental structure of thin cellulosic films and its relation to transport is essential. In this work, thin cellulose acetate butyrate films were fabricated at varying thickness and treatments, such as soaking and plasticizer treatment. Their mechanical properties were analyzed using a surface wrinkling approach, and their hygroscopic properties were measured using swelling measurements and surface wrinkling under humid conditions. This work demonstrates confinement in cellulose acetate butyrate films at thicknesses below 45 to 70 nanometers. Plasticization …

Shear Behavior Of Reinforced Concrete Shallow Beams With Lightweight Infill, Ahmed Mohamed Tahwia, Mohamed El Saied El-Zoughiby, Mohammed Hany Hassan

Mansoura Engineering Journal

This paper presents the effect on the shear behavior of reinforced concrete shallow beams due to infilling by using the Autoclaved Aerated Concrete (AAC) as a lightweight material to decrease the weight of the beams. Three reinforced concrete beams were fabricated in the lab to study the effect of infilling the beams with AAC blocks. The first beam is a solid or reference beam, SB01. The second beam was in filled by four AAC blocks having 100mm thick ribs, SB02. The last beam was also in filled but with eight AAC blocks having 40mm thick ribs, SB03. Based on the …

Use Of High-Resolution Multi-Temporal Dem Data For Landslide Detection, Behnam Azmoon, Aynaz Biniyaz, Zhen (Leo) Liu

Michigan Tech Publications, Part 1

Landslides in urban areas have been relatively well-documented in landslide inventories despite issues in accuracy and completeness, e.g., the absence of small landslides. By contrast, less attention has been paid to landslides in sparsely populated areas in terms of their occurrences and locations. This study utilizes high-resolution and LiDAR-derived digital elevation models (DEMs) at two different times for landslide detection to (1) improve the localization and detection accuracies in landslide inventories, (2) minimize human intervention in the landslide detection process, and (3) identify landslides that cannot be easily documented in the current state of the practice. To achieve this goal, …

Forecasting The Demand For Asphalt Concrete In Karbala Governorate, Ghayath Ali, Sawsan R Mohammad, Shakir Al-Busaltan

Al-Bahir

The challenge of forecasting asphalt concrete demand in the Karbala governorate is the subject of this study. Population and number of vehicles in Karbala are considered among the independent (explanatory) variables taken into consideration. These explanatory variables ' historical data have been gathered and examined. The historical data of each explanatory variable has been linked to the historical demand for asphalt concrete in the governorate using regression techniques in the Statistical Package for the Social Sciences (SPSS) program version 26.

A model to forecast the governorate's demand for asphalt concrete has been developed based on these factors. The forecasts have …

Keys To Genus Of Calanoid Copepods Of China Seas, Chang-Tai Shih, Qing-Chao Chen, Yang-Chi Lan, Shih-Hui Hsiao, Chi-Yu Weng

Journal of Marine Science and Technology–Taiwan

No abstract provided.

Calanoid Copepods Of China Seas, Chang-Tai Shih, Qing-Chao Chen, Yang-Chi Lan, Shih-Hui Hsiao, Chi-Yu Weng

Journal of Marine Science and Technology–Taiwan

Calanoid copepods are a well-recognized taxonomic group of Crustacea. They were already placed, with one cyclopoid (Scribella) and five calanoid (Acartia, Calanus, Candacia, Euchirus (= Euchaeta), and Pontella) genera, under a single taxonomic unit, the Calanidae, by Dana [1]. Giesbrecht and Sars are the two early principal contributors to the taxonomy of Copepoda, including the Calanoida.

Based on the location of the body articulation, Giesbrecht [2] divided copepods into two groups, the Gymnopleoden and Podopleoden. All copepods, characterized by an articulation between the fifth pedigerous (leg-bearing) somite and genital somite, separating the body into an anterior part (prosome) and a …

Calanoid Copepods Of China Seas-Introduction And Acknowledgement, Chang-Tai Shih, Qing-Chao Chen, Yang-Chi Lan, Shih-Hui Hsiao, Chi-Yu Weng

Journal of Marine Science and Technology–Taiwan

No abstract provided.

Software Protection And Secure Authentication For Autonomous Vehicular Cloud Computing, Muhammad Hataba

Dissertations

Artificial Intelligence (AI) is changing every technology we deal with. Autonomy has been a sought-after goal in vehicles, and now more than ever we are very close to that goal. Vehicles before were dumb mechanical devices, now they are becoming smart, computerized, and connected coined as Autonomous Vehicles (AVs). Moreover, researchers found a way to make more use of these enormous capabilities and introduced Autonomous Vehicles Cloud Computing (AVCC). In these platforms, vehicles can lend their unused resources and sensory data to join AVCC.

In this dissertation, we investigate security and privacy issues in AVCC. As background, we built our …

High-Sensitivity Optical Fiber Sensing Based On A Computational And Distributed Vernier Effect, Chen Zhu, Jie Huang

Electrical and Computer Engineering Faculty Research & Creative Works

This article reports a novel concept of computational microwave photonics and distributed Vernier effect for sensitivity enhancement in a distributed optical fiber sensor based on an optical carrier microwave interferometry (OCMI) system. The sensor system includes a Fabry-Perot interferometer (FPI) array formed by cascaded fiber in-line reflectors. Using OCMI interrogation, information on each of the interferometers (i.e., sensing interferometers) can be obtained, from which an array of reference interferometers can be constructed accordingly. By superimposing the interferograms of each sensing interferometer and its corresponding reference interferometer, distributed Vernier effect can be generated, so that the measurement sensitivity of each of …

Method Of Intelligent Control Of The Process Of Rectification Of Multicomponent Mixtures, N R. Yusupbekov, Y Sh Avazov

Technical science and innovation

An intelligent method of controlling a rectification column, which implements the technological process of separation of multicomponent mixtures by rectification method, is proposed. The advantage of the method is that it uses an advanced process control system (APC-system) and a distributed control system at the same time. The proposed intellectual method of controlling the process of rectification of multicomponent mixtures for the application of APC-systems and a net model of situational control allows to increase the quality of the product coming from the rectification column, and the efficiency of the rectification of the mixture column, to increase the quality of …

Direct Material Property Determination: One-Dimensional Formulation Utilising Full-Field Deformation Measurements, Sreehair Rajan-Kattil, Michael A. Sutton, Subramani Sockalingam, Frank Thomas, Tusit Weerasooriya, Stephen Alexander

Faculty Publications

A direct approach is described to determine the elastic modulus distribution in a nominally heterogeneous material subject to tensile/compression loading and primarily experiencing deformations in the axial direction. The formulation is developed for uniaxial applications using basic theoretical constructs, resulting in a computational framework that has a matrix form [A] {E} = {R}, where the [A] matrix components are known functions of measured axial strains and axial positions, {R} components are known functions of axial body forces, applied loads and reactions and {E} components are the unknown elastic moduli at discrete locations along the length of the specimen. For a …

Fluoride Technology For Processing Copper Production Slag At Almalyk Mmc And The Possibility Of Its Application For The Synthesis Of Highly Dispersed Silica Dioxide, M Sh Kurbanov, U M. Nuraliev, J A. Panjiev, S A. Tulaganov, M Ernazarov, L S. Andriyko

Technical science and innovation

A new pilot-plant equipment of an inclined rotary furnace for the processing of fluoroammonium silicon-containing materials has been developed and manufactured, which allowed sublimation of ammonium hexafluorosilicate, formed as a result of fluorination of processed raw materials, in two sections, with autonomous control of temperature and movement of raw materials. It is shown that the use of the created equipment for the processing of copper-smelting slags of the Almalyk MMC using fluoride technology makes it possible to separate amorphous silicon dioxide in the form of a dispersed powder from slags, extract iron and obtain a collective concentrate of precious, non-ferrous …

Selective Reduction Of Trivalent Iron In Zinc Ferrite Using Elemental Sulphur, B T. Berdiyarov, Sh T. Khojiev, J B. Ismailov, S T. Matkarimov, Sh O. Ismatov

Technical science and innovation

In this article, the process laws and technological aspects of the process of sintering the zinc-containing waste of a zinc plant with technical sulfur are considered. Zinc cake is obtained during the sulfuric acid leaching of calcined zinc ores and contains about 20% zinc and additional metals such as indium, cadmium, lead and copper. Copper cakes are somewhat difficult to work with because they contain ferrites and silicates belonging to acid-resistant spinels. Since the chemical and mineralogical composition of zinc production cakes consists of complex oxides, finding ways to process them is one of the actual topics of zinc metallurgy. …

Evaluation Of The Stress-Strain State Of The Kochbulak And Kyzylalma Deposits With Tectonic Stresses Included With The Finite Element Method, A Markov, A R. Khasanov, A N. Kazakov, M R. Khaqberdiyev, M X. Rakhimova

Technical science and innovation

In the world, the modern development of the mining industry is directly related to the development of complex structural mineral deposits at great depths under conditions of geodynamic and geomechanical risk. Especially when mining mineral deposits underground at great depths, rock pressure is manifested in a dynamic form and there is a danger of rock bursts. The practice of mining in rock burst conditions and the fight against rock bursts have more than 100 years of history. However, many important issues are currently far from being resolved, which is due to the complex nature of the stress-strain state of the …

Justification For The Creation Of A Pumped Storage Power Plant On The Basis Of The Cascade Of The Urta-Chirchik Hpps, M M. Mukhammadiev, K S. Dzhuraev, E D. Ismailov

Technical science and innovation

The article deals with the creation of a pumped storage power plant. PSPP is the most efficient option for generating electricity in the conditions of Uzbekistan, especially at the Urta-Chirchik cascade. We have discovered a pumped storage power plant in Bustanlik region, Bulaksu-Khojikent PSPP, Kizilsui-Khojikent PSP, Charvak HPP-PSPP and Pskem PSPP, and were convinced that they would justify all the money spent. In the pumped storage power plant in Bustanlik region the necessary infrastructure is available in full, and the production base of the Tashkent region and Bostanlyk district of the Republic is subject to use, taking into account the …

Assessment Of Stability Of The Body Elements Of A Dynamometric Car For Special Technical Purpose, F F. Khikmatov, Y O. Ruzmetov

Technical science and innovation

In the work, studies were carried out to assess the stability of the body elements of a dynamometric car for special technical purposes for the railways of the Republic of Uzbekistan. Distinctive features of the proposed design of the dynamometric car from the car of the analogue model 61-907 are considered. The results of theoretical calculations for the stability of the body elements of the developed design of a dynamometric car in three design modes are given: under compression, tension and impact.

The Vibration Sources Of Car Tractor Attachments, Sh Kh Kurbanov, U A. Rajapbayev

Technical science and innovation

This article presents measures to protect against the noise of operators during the work of machine-tractor units, and to prevent the occurrence of vibration as a result of tractor movement during work. Methods of acoustic processing of noise and vibration D-144; It has been proven that the noise characteristics of D-240T engines vary depending on the frequency of rotation of the crankshaft.

Biochar Preparation, Investigation Of Properties And Application As A Low-Cost Adsorbent – A Review, A Kh Aripov, S M. Turabdzhanov, Sh Komilova, O Sh Qodirov, G S. Rakhimova, T V. Darabkova, Zh Aimenova, L S. Rakhimova

Technical science and innovation

An overview of current developments in biochar application in water and wastewater treatment is given in this article, along with a brief explanation of the sorption mechanisms for removing contaminants and the techniques for biochar preparation. In order to encourage the continued use of biochar in effective water and wastewater treatment, future research directions and environmental concerns about biochar are also presented.

Features Designing Special Clothing For The Hot Climate Of Uzbekistan, N Kh Mirtalipova, N A. Isaxujayeva

Technical science and innovation

This paper considers the issues of establishing the relationship between the properties of fabric, clothing design and the comfort of clothing; communication of the size of the human body, allowance for free fitting, modern design when developing the design of clothing; connection of the allowance for free fitting with a suitable air gap. A diagram is given that characterizes the dependence of the comfort of clothing on its design and properties of fabrics. A mathematical model of the processes of air exchange in the underwear space is considered, which will allow obtaining more complete information and establishing more stringent dependences …

Analysis Of Functionality Of Statistical Data In Geovisualization Of Population Dynamics, L Gulyamova, M Sh Shafkarova, D N. Rakhmonov

Technical science and innovation

The article deals with the analysis of population density with the help of geo information programs, the process of visualization of the integration of statistical and geographical data, the structure of the technological sequence. One of the methods for describing the relative productivity of land data is considered. Geo information systems can support the decision-making process in the design and selection phase with limited capabilities, and these systems provide a very static modeling environment. This limits their scope as a decision support tool, especially at stages where collaborative problem solving decisions are required.

Analysis Of Mechatronically Controlled Turbines And Their Layout Schemes Used In Middle-Class Internal Combustion Engines, F Umerov, A Yangibaev

Technical science and innovation

This article will talk about the prospects for the possible use of gas-cylinder equipment on turbine internal combustion engines with a direct power supply system, consider the main possible methods of using such equipment and their results, identifying the best among them, taking such well-known car models as Chevrolet Tracker and Chevrolet Onyx as an example. Today there is an increase in the trend of transferring the car to two fuel supply. Installing gas-cylinder equipment on a turbo has also become quite popular. It is not difficult to make such a translation. It is only important to do this in …

Extraction Of Cellulose Nanocrystals From Secondary Paper Waste And Their Use In Paper Production, E A. Egamberdiev, S K. Norboyev

Technical science and innovation

Cellulose nanocrystals were obtained by hydrolysis process from waste paper industry. The result of Fourier transform infrared spectroscopy (FTIR) for nanocellulose showed that no new chemical bonds were formed during the preparation of nanocellulose. The results of X-ray diffraction showed that the crystallinity of the macules produced in the treated and untreated paper industry was 66% and 73.8%, respectively. The results of nanocellulose revealed a natural needle-like fiber with a length of 300 nm to 600 nm, a diameter of 10 nm to 30 nm, and an aspect ratio in the range of 10 to 60. It was found that …

Study On Early-Age Elastic Modulus Of Frc Using Electrical Resistivity And Resonance Frequency, Daniel A. Castillo Pereira, Saman Hedjazi, Ehsanul Kabir

Civil Engineering & Construction: Faculty Publications

The correlation between surface electrical resistivity and modulus of elasticity of fiber-reinforced concrete (FRC) was studied within early ages in this study as a novel nondestructive method for predicting the modulus of elasticity of FRC. In addition to the relationship of the two quantities, the influence of various discrete fibers such as glass, nylon, polypropylene, and steel on the early age properties of FRC was investigated. Twenty-one FRC mixes were designed and tested; including four fiber types, three different fiber volume fractions for each fiber type, and three different water-to-cement ratios for all the different mixes. The surface electrical resistivity …

Optimal Synthesis Of Crank-Rocker Mechanisms With Optimum Transmission Angle For Desired Stroke And Time-Ratio Using Genetic Programming, Bahman Ahmadi, Behnam Ahmadi

Michigan Tech Publications, Part 1

Dimensional synthesis of crank-rocker mechanisms applied to provide some desired values of stroke and time ratio, is of utmost importance for designing an efficient mechanism. In the synthesis and manufacturing of crank-rocker mechanisms, the designers are further challenged by other design criteria, such as quality of motion. In this study, a novel approach based on genetic programming (GP) is proposed for dimensional synthesis of planar crank-rocker mechanisms with optimum transmission angle over the desired stroke and time-ratio. An analytical approach is elaborated which leads to an interesting relationship of length of the coupler and rocker links. It is, therefore, advised …

Comparing The Measured And Thermodynamically Predicted Afm Phases In A Hydrating Cement, Niall Holmes Dr., Mark Russell, Geoff Davis, Mark Tyrer

Articles

In hydrating Portland cements, more than one of the AFm family of calcium aluminates may exist. Depending on the amount of carbonate and sulfate present in the cement, the most common phase to precipitate is monosulfate, monocarbonate and/or hemicarbonate. It has been reported in the literature that hemicarbonate often appears in measurements such as XRD but not predicted to form/equilibrate in thermodynamic models. With the ongoing use of commercial cements such as CEM I and CEM II containing more and more limestone, it is important to understand which hydrate solids physically precipitate and numerically predict over time. Using 27 cement …

Non-Destructive Evaluation Of Mortar With Ground Granulated Blast Furnace Slag Blended Cement Using Ultrasonic Pulse Velocity, Chi Kang Loke, Barry Lehane, Farhad Aslani, Subhra Majhi, Abhijit Mukherjee

Research outputs 2022 to 2026

Non-destructive evaluation using ultrasonic pulse velocity (V_p) testing has extensive applications in the concrete industry. With advances in construction technology, the use of ground granulated blast furnace slag (GGBFS) as a partial replacement to cement in a concrete mix is growing in popularity primarily because it reduces the initial capital cost of raw materials and the associated energy costs. This paper investigates the effect of the water-to-cement (w_c) ratio and the cement content replaced by GGBFS on the development with time of the ultimate compressive strength ((Formula presented.)) and the compression wave velocity (V …

Employing Discrete Solid Phases To Represent C-S-H Solid Solutions In The Cemdata07 Thermodynamic Database To Model Cement Hydration Using The Phreeqc Geochemical Software, Niall Holmes Dr., Mark Tyrer, Denis Kelliher

Articles

This paper presents a cement hydration model over time using the cemdata07 thermodynamic database and a series of derived discrete solid phases (DSPs) to represent calcium silicate hydrate (C-S-H) as a binary solid solution with two end-members. C-S-H in cement is amorphous and poorly crystalline with a range of molar Ca/Si ratios from 0.6 to 1.7. It displays strongly incongruent dissolution behaviour, where the release of calcium into solution is several orders of magnitude greater than silicon. It is, therefore, important that any cement hydration model provides a credible account of this behaviour. C-S-H has been described in the cemdata07 …

Towards Qos-Based Embedded Machine Learning, Tom Springer, Erik Linstead, Peiyi Zhao, Chelsea Parlett-Pelleriti

Engineering Faculty Articles and Research

Due to various breakthroughs and advancements in machine learning and computer architectures, machine learning models are beginning to proliferate through embedded platforms. Some of these machine learning models cover a range of applications including computer vision, speech recognition, healthcare efficiency, industrial IoT, robotics and many more. However, there is a critical limitation in implementing ML algorithms efficiently on embedded platforms: the computational and memory expense of many machine learning models can make them unsuitable in resource-constrained environments. Therefore, to efficiently implement these memory-intensive and computationally expensive algorithms in an embedded computing environment, innovative resource management techniques are required at the …

Novel Texture-Based Probabilistic Object Recognition And Tracking Techniques For Food Intake Analysis And Traffic Monitoring, Robert Jacob Dibiano

LSU Doctoral Dissertations

More complex image understanding algorithms are increasingly practical in a host of emerging applications. Object tracking has value in surveillance and data farming; and object recognition has applications in surveillance, data management, and industrial automation. In this work we introduce an object recognition application in automated nutritional intake analysis and a tracking application intended for surveillance in low quality videos. Automated food recognition is useful for personal health applications as well as nutritional studies used to improve public health or inform lawmakers. We introduce a complete, end-to-end system for automated food intake measurement. Images taken by a digital camera are …

Biological Treatment Of Cannery Wastes, Yung-Tse Hung, Seyedkiarash Sharifiilierdy, Howard H. Paul, Christopher R. Huhnke, Rehab O, Abdel Rahman

Civil and Environmental Engineering Faculty Publications

This chapter reviews various methods of cannery wastewater biological treatment, namely up-flow anaerobic sludge blanket (UASB), sequencing batch reactor (SBR), three-stage aerobic rotating biological contactor (RBC), three sequentially arranged reactors (anaerobic-anoxic-aerobic reactors), lagooning, and anaerobic digestion. The general principles for dealing with the uncertainty of general wastewater treatment plants are applied to control the uncertainty in cannery wastewater treatment. An overview of on the application of Monte Carlo, support vector machine (SVM), artificial neural network (ANN), and genetic algorithm to manage the uncertainty in the biological treatment of wastewater is provided.