Engineering Commons^™

Investigation Of Magnesium Containing And Calcium Ammonium Nitrate Obtainment Process, A.A Nabiev, A.M Reymov, Sh.S Namazov, B.M Beglov

Chemical Technology, Control and Management

In this article the results of process for obtaining magnesium containing carbonate ammonium nitrate (CAN) by interaction of ammonium nitrate melt in dolomite mineral (DM) from “Shorsu”, Fergana region, have been given. Mass ratio of AN:DM is varied from 100 : 3 tо 100 : 35. The prilling method was used to granulate nitrate-carbonate melt. It was determined that the composition and property of fertilizer obtained. The possibility of granular fertilizer production with content of 25.49-32.77% of nitrogen, 0.90-8.09% СаО, 0.56-4.97% MgO and petty amount of potassium was shown. The main task for modification of AN is increasing strength of …

Sulfo Aluminate-Silicate Cement Based On Phosphogypsium, N.E Shamadinova, Kh.A Adinaev, T.A Atakuziev

Chemical Technology, Control and Management

It is shown that in industrial conditions it is possible to obtain a clinker based on phosphogypsum, limestone and kaolinite clay at a roasting temperature of 200-3000C below the burning temperature of Portland cement. As a result of the research was created a low-temperature roasting cement. The obtained cements gain high solidity, especially in the initial periods. It is established that based on these cements and Portland cement can be obtained various types of cements of special purpose.

Calculation Of The Rate Of Entrainment In Three-Phase Fluidization With Solid Non-Uniform Mixtures, A.Sh Abdullaev, O.Sh Temirov, Kh.S Nurmuhamedov

Chemical Technology, Control and Management

Article is devoted to determination of critical speeds of a compound from solid bodies with sharply different physicomechanical properties in a three-phase fluidized layer. Critical speeds, in particular, the speed of ablation of wab of a thin skin of root crops, in the form of a thin plate of irregular shape are defined. Results on critical speed of ablation considerably differ from the estimated values received on a formula Todes O.M. Therefore, for increase in accuracy of determination of critical speed of ablation of a three-phase fluidized layer the correlation considering a factor of the form and sailing of bodies …

Resershese Fire Wood For Production Building Konstruction, U.I Rustamov, A.J Khabibullaev, B.A Mukhamedgaliev

Chemical Technology, Control and Management

Some specific features of combustion and smoke formation of wood materials, as well as toxicity of gases released from combustion of local wood, are studied. It is established that the concentration of the released smoke and its nature depend on the structural features and chemical composition of the combustible material. It was found that the beginning of the exothermic decomposition of wood begins at a temperature of 270-280 ° C. In this process, a significant amount of heat is released during the process. For calcareous wood, the heat of decomposition is 260 kcal / kg. This heat is sufficient for …

Optimization Of The Method Of Synthesis Of Thermoplastic Copolymers Based On Acrylic And Vinyl Monomers For Shoe Suspended Materials, A.T Ibragimov, A.Z Mamatov, D.M Maxmanov

Chemical Technology, Control and Management

In order to optimize the synthesis of thermoplastic copolymers for shoe sole materials, a mathematical model of the process involving acrylic and vinyl monomers has been developed. The kinetic parameters of copolymerization at the optimum content of initial monomers and the thermal processing regime are investigated. The regressive equations of the synthesis process, which takes place in the heterogeneous phase with incoming factors and outgoing copolymerization parameters, are calculated. The comparative parameters of optimization of the synthesis process, as well as the molecular characteristics and structure of copolymers with the optimal composition, are estimated mathematically by the data obtained.

The Condensing Polymeric Compositions On The Basis Of Akrilat And Polysaccharides, K.A Ravshanov, B. Olimov

Chemical Technology, Control and Management

The possibilities of using starch and its derivatives as a thickener for printing with various dyes, establishing the printing-technical properties of starch with GAE and PAA for packing cotton fabrics have been studied. The properties of the printed fabric of the effect of the composition on the strength of the color on various physicochemical effects, as well as the smoothness and brightness of the color, were studied.

Development Of Technology On The Hydrochloric-, Nitric- And Sulfuric Acid Processing Of Low-Grade Phosphorites Of Central Kyzylkum, T.I Nurmurodov, A.U Erkaev, B.Kh Kucharov

Chemical Technology, Control and Management

The rheological properties of ammoniated mother liquors have been studied and the technology of processing low-grade phosphorites of the Central Kyzylkum with salt and nitrogen-sulfuric acid methods has been developed and it has been shown that the suspensions formed are processability for obtaining complex phosphorus fertilizers and purified precipitate.

Imitation Model Of The Chemical Reactor Control System, I.H Siddiqov, S.B Atajonova

Chemical Technology, Control and Management

The paper deals with the construction of an imitation model of the chemical reactor control system, for investigating the dynamic properties of the process. Computational model of the object is developed, based on the Simulink package of the MATLAB program. Because of the simulated experiment, the main factor affecting the temperature regime of the chemical reactor was identified and the regulating parameter - steam flow, significantly influencing the process.

The Algorithm Of Classification Of Medical Data In Space Of The Informative Signs With Use Of Functions Of Range And Closeness, M.M Kamilov, A.H Nishanov, G.P Dzhurayev

Chemical Technology, Control and Management

In the article, the diseases commonly associated with the diagnosis in medicine are associated with headaches, which are the most common neurological diseases. An algorithm for determining the space of informative attributes for the objects of the considered class and assigning the significance level of the selected diagnosis from a complex of diagnoses belonging to the same class, relative to others, using algorithms for computing estimates based on the features of the processes of making diagnostic decisions in medicine.

Analysis Of The Mathematical Methods For Determination Information Parameter Described By Gauss's Function, O.O Zaripov, G.Sh Abidova

Chemical Technology, Control and Management

Results of the analysis of the mathematical methods are considered in article for determination information parameter, described by Gauss's function. It is shown that at present nanotechnologies stand out in independent scientific direction, which gives the new pulse for development of the branches of the economy. The presented curves characterizing group merged peak, described function Gausses. On base got result of the analysis of the mathematical models, defining information parameters peak, occurs the simplification at building hardware device, information parameters under investigation peak.

Algorithms Of Stable Control Of A Matrix Object In The Conditions Of Parametric Uncertainty, U.F Mamirov

Chemical Technology, Control and Management

The problems of forming algorithms for stable control of a matrix object under conditions of parametric uncertainty are considered. Algorithms for managing the object under consideration using the matrix pseudoinversion procedure are given. Recurrent algorithms based on the fringing method are used for pseudo-inversion of matrices. These relations allow us to implement recurrent pseudo-inversion of matrices in the control algorithm and, thereby, realize control actions in the adaptive control system of the matrix object under uncertainty conditions.

Preparation Of Ni(Dpim)2Cl2 Complex For The Electrocatalytic Reduction Of Co2, Li-Pu Zhang, Dong-Fang Niu, Xin-Sheng Zhang

Journal of Electrochemistry

A new Ni(dpim)₂Cl₂complex using 2-(diphenylphosphino)-1-methylimidazole (dpim) as ligand was prepared and served as a catalyst for the electrochemical reduction of CO₂. The electrochemical redox behavior of Ni(dpim)₂Cl₂ in CH₃CN/TPABF₄ solution under nitrogen atmosphere showed the two-electron irreversible reduction at -0.7 V and one-electron quasi-reversible reduction at -1.3 V. After bubbling CO₂ into the electrolyte, the reduction peak appeared at -1.3 V became irreversible and the peak current increased from 0.48 mA·cm^-2 to 0.55 mA·cm^-2. Moreover, the peak current at -1.3 V could further increase …

Preparation And Properties Of Manganese Oxide And Polyaniline-Carbon Composite Electrode, Tian-Tian Zhou, Bing Wu, Chao Deng, Ying Gao

Journal of Electrochemistry

The polyaniline-carbon (PAnC) electrode was prepared by the polymerization of aniline monomer and activated carbon in ice water bath, and followed by chemical deposition of manganese dioxide MnO₂-PAnC composite material. The specific capacitance of MnO₂-PAnC reached 459 F•g^-1. The cyclic voltammetric results showed a small deformation in the voltammogram curve obtained with the MnO₂-PAnC electrode at high scan rate, indicating good reversibility and capacitive properties. The AC impedance results revealed that the MnO₂-PAnC electrode displayed the smallest charge transfer resistance and the fastest diffusion
rate of surface ions than other …

Preparation Of Co3O4/Ti Electrocatalytic Membrane Electrode For Catalytic Oxidation Of Benzyl Alcohol, Yu-Mei Zheng, Zhen Yin, Hong Wang, Jian-Xin Li

Journal of Electrochemistry

The cobalt oxide(Co₃O₄) nanoparticles were loaded on microporous Ti membrane to prepare Co₃O₄/Ti electrocatalytic membrane electrode by dip-coating method. The microstructures and electrochemical properties of Co₃O₄/Ti electrocatalytic membrane were investigated. The Co₃O₄/Ti electrocatalytic membrane reactor (ECMR) assembled by using the Co₃O₄/Ti electrocatalytic membrane as an anode was adopted for catalytic oxidation of benzyl alcohol to produce benzaldehyde and benzoic acid.The effects of different operation parameters on benzyl alcohol conversion, and selectivity to benzaldehyde and benzoic acid of ECMR were studied. …

Simulation Analysis In Dynamic Performance Of Proton Exchange Membrane Fuel Cell Under Starting Condition, Yan Xiao, Ying-Jie Chang, Wei Zhang, Qiu-Hong Jia

Journal of Electrochemistry

Based on the equivalent circuit model, by considering both the dynamic gas pressure model and the dynamic heat transfer model, a lumped parameter model is developed. The start process of the fuel cell is simulated by using SIMULINK software. The undershoot of the voltage is observed from the simulation results, and the response time of the voltage is basically the same as that of the fuel cell temperature, which indicates that the temperature has great influence on the dynamic performance of the fuel cell. From the perspective of the temperature, the dynamic responses of the thermodynamic potential, the activation overvoltage, …

Interaction Between Energy And Electrocatalysis —— A Review On The 1st Young Scientist Forum On Energy Electrocatalysis, Hong Li, Wen-Bin Cai

Journal of Electrochemistry

No abstract provided.

Effects Of Rotating Magnetic Fields On Pem Fuel Cell Performance, Mao-Liang Wu, En-Ze Wang, Guang-De Pan, Zhong-Jun Liu, Fei Xie

Journal of Electrochemistry

Proton Exchange Membrane (PEM) fuel cell performance may be improved by application of additional magnetic fields. In this work, one square permanent magnet, made of either 16 combination cylinder magnets with homopolarity or 16 combination cylinder magnets with heteropolarity, was exerted on the fuel cell surface to produce additional magnetic field affecting PEM fuel cell performance. The influences of magnetic field status (rotating, static and none) on polarization and power density curves measured in a PEM fuel cell were investigated. The results verified the benefit of magnetic field, proving that the magnetic field distribution could improve the fuel cell output. …

Educators’ Perceptions Of Integrated Stem: A Phenomenological Study, Brian K. Sandall, Darrel L. Sandall, Abram L. J. Walton

Journal of STEM Teacher Education

The study utilized a semistructured interview approach to identify phenomena that are related to integrated STEM education by addressing the question: What are the critical components of an integrated STEM definition and what critical factors are necessary for an integrated STEM definition’s implementation? Thirteen expert practitioners were identified and interviewed. The interviews were transcribed and analyzed for content in three different ways: by person, by interview question, and across all interviews using exploratory data analysis methods. Ten identified phenomena were grouped into two classes: structural implementation phenomena and interpersonal implementation phenomena. The structural implementation phenomena were: subject integration, project-based learning, …

Making Connections: Evaluation Of A Professional Development Program For Teachers Focused On Stem Integration, Judy Lambert, Carmen Cioc, Sorin Cioc, Dawn Sandt

Journal of STEM Teacher Education

This article reports on a 2-year evaluation of a STEM integration professional development (PD) program for 40 math, science, and special education teachers in Grades 5–9 from a large Midwestern public school district. The National Research Council’s framework for integrated STEM education (Honey, Pearson, & Schweingruber, 2014) was used to explain the goals, outcomes, nature and scope, and implementation of the program. Teachers were measured on their growth in STEM content knowledge, technology integration, teaching confidence, pedagogical beliefs, and impact of PD. Increases resulted in all these areas with statistically significant improvements in most of them, particularly in Year 2. …

Usu Aerospace Engineering Researcher Lands Prestigious Navy Grant, Usu College Of Engineering

College of Engineering News

Utah State University’s Doug Hunsaker, a rising star in aerodynamics research, received the coveted Young Investigator Program (YIP) award from the Office of Naval Research.

Semi-Annual Program Progress Performance Report For University Transportation Systems Pppr#9, Florida Solar Energy Center, Richard Raustad

FSEC Energy Research Center®

The Electric Vehicle Transportation Center (EVTC) supports the U.S. Department of Transportation's strategic goal of planning for near-term integration of alternative fuel vehicles as a means to build a sustainable transportation system. The project objectives are to evaluate technologies, standards, planning and policies to ensure seamless integration of electric vehicles (EVs) into a complex transportation network and electricity grid. The EVTC bridges the gap between deployment of electric vehicles and the traditional transportation system.

Battery Technologies For Mass Deployment Of Electric Vehicles, Florida Solar Energy Center, R. Paul Brooker

FSEC Energy Research Center®

Electric vehicle (EV) batteries have significantly improved since their inception. However, lifetime of these batteries is still strongly dependent on the usage profiles. This report describes aspects of EV battery utilization, and their impact on battery lifetime. Additionally, this report will describe potential future uses of EV batteries, particularly in vehicle-to-grid applications.

Design And Implementation Of A Virtual Reality Laboratory For Mechanical Maintenance, Adolfo Enrique Samudio Cano

Morehead State Theses and Dissertations

A thesis presented to the faculty of the College of the College of Business and Technology at Morehead State University in partial fulfillment of the requirements for the Degree Master of Science by Adolfo Enrique Samudio Cano on April 27, 2018.

Usu Mechanical Engineering Team Takes First At Soapbox Derby | College Of Engineering, Usu College Of Engineering

College of Engineering News

Nine teams competed in Saturday’s 2nd annual ASME Soapbox Derby.

Quality Function Deployment Method And Its Application On Wearable Technology Product Development, Mir Salahuddin

LSU Master's Theses

The purpose of this thesis was to investigate consumers and product developer’s expectations of wearable technology products in the context of the Quality Function Deployment (QFD) framework. The specific objectives were to: 1) Explore the quality features that consumers consider most important when purchasing wearable technology product. 2) Explore the technical features product developers consider most important in the development of wearable technology. 3) Identify the technical features that wearable technology product developers need to focus on to meet the customer requirements.

The Qualtrix online survey system was used to collect demographic, quantitative and essay length written responses from participants. …

Exploration And Discussion Of Modern Green Construction Practices Demonstrated In The Txaire Homes, Megan Nicole Patterson

Civil Engineering Theses

The Texas Allergy, Indoor Environment, and Energy Institute (TxAIRE) was developed with an original vision of research capabilities that spread across five broad but cohesive areas: understanding and improving indoor environmental quality, developing unique methods of air filtration, developing indoor air quality sensor technology, reducing residential electrical power requirements, and developing technically based design guidelines. Increased understanding and development of data and technologies in these five areas can make a significant impact on the way residential structures are built and designed in the future.

This comprehensive review of TxAIRE and its relationship to Indoor Air Quality, Energy, and Occupant Comfort …

Detecting Suicide Risk From Wristworn Activity Tracker Data Using Machine Learning Approaches, Pallavi Atluri

Electrical Engineering Theses

Suicide is a prevalent cause of death worldwide and depression is a primary concern of many suicidal acts. It is possible that an individual during depression never has any suicidal thoughts at all. On the other hand, some individuals in stable condition with no apparent symptoms of depression feel urges to commit suicide (suicidal ideation). Many such individuals never let anyone know what they are feeling or planning. Suicidal ideation considered an important precursor to suicidal acts.

Detecting the suicide risk in individuals with mood disorders is a major challenge. The current clinical practice to assess suicide risk in these …

Novelis Teaching Table, Phillip Laplante, Robert Hemker, Taylor Mcgriff, Juan Restrepo, Shelly Abraham

KSU Journey Honors College Capstones and Theses

Novelis is a company that specializes in metal casting, recycling, and rolling. They primarily focus on aluminum rolling for cans and car bodies but are an industry leader in numerous related areas. As the rolling process is not taught in most general engineering courses, Novelis periodically teaches new engineers and technicians about the specifics of this relatively mathematically complex process. Most of the current teaching methods are through PowerPoint presentations and group exercises, with minimal hands-on involvement. One of the most useful tools for teaching the rolling process is an actual jeweler’s rolling mill, which Novelis currently possesses, but is …

The Controversial F-35 Joint Strike Fighter: America's Most Expensive Weapons System And Its Global Impact, Bert Chapman

Libraries Faculty and Staff Creative Materials

Provides an overview on the F-35 Joint Strike Fighter (JSF) program involving the U.S. and many allied countries. Describes the costs of this program, the technical problems it has experienced, its economic impact on the U.S. and allied countries, the JSF's operational capabilities, potential combat scenarios in which it could be used, and the campaign finance impact aerospace companies and unions have in the electoral process.

College Of Engineering News, Georgia Southern University

College of Engineering & Computing: News & Publications (2010-2023)

• Pi Tau Sigma receives Outstanding Service Award