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Hvac System Air Filter Diagnostics And Monitoring, Priotomo Abiprojo, Fadi M. Alsaleem 2019 O'Fallon, MO

Hvac System Air Filter Diagnostics And Monitoring, Priotomo Abiprojo, Fadi M. Alsaleem

Architectural Engineering -- Faculty Publications

A system and method for monitoring a heating, ventilation, or air conditioning (HVAC) system of a building is provided. A monitoring server, located remotely from the building, receives operating parameter data from a monitoring device at the building that measures an operating parameter of the HVAC system. The monitoring server generates a plurality of data clusters from the operating parameter data, each data cluster corresponding to operating parameter data generated during steady-state operation of the HVAC system. The monitoring server calculates an average operating parameter value for each data cluster. The monitoring server calculates normalized operating parameter values based on ...


Evaluación Del Efecto Antimicrobiano Del Polvo Y Extracto Acuoso Liofilizado De Hojas De Moringa Oleífera En Un Derivado Cárnico (Chorizo Crudo), Natalia Ximena Munevar, Erika Paola Zambrano Orozco 2019 Universidad de La Salle, Bogotá

Evaluación Del Efecto Antimicrobiano Del Polvo Y Extracto Acuoso Liofilizado De Hojas De Moringa Oleífera En Un Derivado Cárnico (Chorizo Crudo), Natalia Ximena Munevar, Erika Paola Zambrano Orozco

Ingeniería de Alimentos

El interés en la búsqueda de extractos vegetales que tengan poder antibacteriano frente a microorganismos patógenos, ha permitido que el presente trabajó de investigación tenga como propósito evaluar la actividad antimicrobiana de la extracción acuosa liofilizada y el polvo de las hojas deshidratadas de la especie vegetal Moringa oleífera frente al crecimiento de Staphylococcus aureus. El extracto acuoso se obtuvo por el método de cocción a partir de las hojas deshidratadas, para posteriormente ser sometido a liofilización. El polvo se consiguió moliendo las hojas deshidratadas para disminuir el tamaño de partícula. Se evaluó la actividad antimicrobiana del extracto acuoso liofilizado ...


Evaluación De La Actividad Antioxidante De Extracto De Cáscara De Gulupa (Passiflora Edulis Foedulis Sims) Sobre Guanabana (Annona Muricata L) Minimamente Procesada, William David Quevedo Pedraza 2019 Universidad de La Salle, Bogotá

Evaluación De La Actividad Antioxidante De Extracto De Cáscara De Gulupa (Passiflora Edulis Foedulis Sims) Sobre Guanabana (Annona Muricata L) Minimamente Procesada, William David Quevedo Pedraza

Ingeniería de Alimentos

En el mercado de la industria alimentaria es común ver, desde hace algunos años, una gran cantidad de alimentos con etiquetas resaltando el no uso de antioxidantes y preservantes artificiales. Las nuevas tendencias de consumo han impulsado la aparición de productos cada vez menos procesados, y así la aplicación de compuestos bioactivos de cáscaras de frutas y especialmente aquellos con contenido de compuestos fenólicos como antioxidantes se ha convertido en una alternativa interesante frente a los tradicionales antioxidantes de origen químico empleados por la industria. El exceso de ingredientes químicos como antioxidantes según diversos estudios concluyen que pueden llegar a ...


Predicción Matemática De La Conductividad Térmica Y La Capacidad Calorífica En Aceites Vegetales, Juliana Andrea González Romero, Luis Carlos Sarmiento González 2019 Universidad de La Salle, Bogotá

Predicción Matemática De La Conductividad Térmica Y La Capacidad Calorífica En Aceites Vegetales, Juliana Andrea González Romero, Luis Carlos Sarmiento González

Ingeniería de Alimentos

El dimensionamiento de equipos en la industria de alimentos es complejo debido a la falta de propiedades de las materias primas utilizadas en los procesos, para esta tarea suelen asumirse valores teóricos que permiten tener una aproximación a los valores reales y así alcanzar niveles aceptables de eficiencia en los procesos. El correcto diseño de equipos solo se puede lograr usando las propiedades térmicas de las materias primas, de aquí su importancia en la industria de alimentos. En este trabajo se propuso desarrollar un modelo matemático que permita predecir capacidad calorífica (Cp) y conductividad térmica (k) para aceites vegetales en ...


Diseño Preliminar De Un Sistema De Desproteinización De Lactosuero Usando Membranas De Ultrafiltración, A Partir De Un Modelamiento Matemático, Bernardo Bermúdez Martínez 2019 Universidad de La Salle, Bogotá

Diseño Preliminar De Un Sistema De Desproteinización De Lactosuero Usando Membranas De Ultrafiltración, A Partir De Un Modelamiento Matemático, Bernardo Bermúdez Martínez

Ingeniería de Alimentos

El lactosuero es un subproducto lácteo que proviene de la elaboración de quesos, a pesar de ser un subproducto, contiene el 44% del contenido nutricional de la leche. Las características de este subproducto dependen del tipo de queso que se elabore. La lactosa es su componente mayoritario, seguido de las proteínas (que contienen alto valor biológico debido a su contenido de aminoácidos esenciales), minerales y agua. Además del desperdicio alimenticio, el lactosuero implica un problema ambiental debido a que presenta alta demanda biológica de oxígeno (DBO) y alta demanda química de oxígeno (DQO) que agota el oxígeno disuelto afectando la ...


Evaluación De Las Propiedades Tecnológicas Y Nutricionales En Una Bebida Fermentada Vegetal Con La Adición Del Extracto Proteico Del Salvado De Arroz, Karol Danyely Cabezas Cifuentes, Valentina Pulido Torres 2019 Universidad de La Salle, Bogotá

Evaluación De Las Propiedades Tecnológicas Y Nutricionales En Una Bebida Fermentada Vegetal Con La Adición Del Extracto Proteico Del Salvado De Arroz, Karol Danyely Cabezas Cifuentes, Valentina Pulido Torres

Ingeniería de Alimentos

Con el aumento estimado de la población para el 2050, la demanda global de proteína animal podría aumentar produciendo así un desgaste ambiental debido al impacto negativo que este ocasiona en toda su cadena productiva; de esta forma, la obtención de proteínas de origen vegetal aumentadas de manera exponencial para disminuir los desperdicios en la agroindustria, cubrir las nuevas tendencias de consumo en la población, ya que se han empezado a trasladar las costumbres vegetarianas y veganas por influencias de la época milenial, aspectos de salud y medioambientales. En el caso de los residuos agroindustriales originados por el sector arrocero ...


Efficient Excitation Of Micro/Nano Resonators And Their Higher Order Modes, N. Jaber, M. A. A. Hafiz, S. N. R. Kazmi, M. H. Hasan, F. Alsaleem, S. Ilyas, M. I. Younis 2019 King Abdullah University of Science and Technology

Efficient Excitation Of Micro/Nano Resonators And Their Higher Order Modes, N. Jaber, M. A. A. Hafiz, S. N. R. Kazmi, M. H. Hasan, F. Alsaleem, S. Ilyas, M. I. Younis

Architectural Engineering -- Faculty Publications

We demonstrate a simple and flexible technique to efficiently activate micro/nano-electromechanical systems (MEMS/NEMS) resonators at their fundamental and higher order vibration modes. The method is based on the utilization of the amplified voltage across an inductor, L, of an LC tank resonant circuit to actuate the MEMS/NEMS resonator. By matching the electrical and mechanical resonances, significant amplitude amplification is reported across the resonators terminals. We show experimentally amplitude amplification up to twelve times, which is demonstrated to efficiently excite several vibration modes of a microplate MEMS resonator and the fundamental mode of a NEMS resonator.


Voltage And Deflection Amplification Via Double Resonance Excitation In A Cantilever Microstructure, Mohammad H. Hasan, Fadi Alsaleem, Abdallah Ramini 2019 University of Nebraska - Lincoln

Voltage And Deflection Amplification Via Double Resonance Excitation In A Cantilever Microstructure, Mohammad H. Hasan, Fadi Alsaleem, Abdallah Ramini

Architectural Engineering -- Faculty Publications

Cantilever electrostatically-actuated resonators show great promise in sensing and actuating applications. However, the electrostatic actuation suffers from high-voltage actuation requirements and high noise low-amplitude signal-outputs which limit its applications. Here, we introduce a mixed-frequency signal for a cantilever-based resonator that triggers its mechanical and electrical resonances simultaneously, to overcome these limitations. A single linear RLC circuit cannot completely capture the response of the resonator under double resonance excitation. Therefore, we develop a coupled mechanical and electrical mathematical linearized model at different operation frequencies and validate this model experimentally. The double-resonance excitation results in a 21 times amplification of the voltage ...


Experiencing Extreme Height For The First Time: The Influence Of Height, Self-Judgment Of Fear And A Moving Structural Beam On The Heart Rate And Postural Sway During The Quiet Stance, Mahmoud Habibnezhad, Jay Puckett, M. S. Fardhosseini, Houtan Jebelli, Terry Stentz, L. A. Pratama 2019 University of Nebraska - Lincoln

Experiencing Extreme Height For The First Time: The Influence Of Height, Self-Judgment Of Fear And A Moving Structural Beam On The Heart Rate And Postural Sway During The Quiet Stance, Mahmoud Habibnezhad, Jay Puckett, M. S. Fardhosseini, Houtan Jebelli, Terry Stentz, L. A. Pratama

Architectural Engineering -- Faculty Publications

Falling from elevated surfaces is the main cause of death and injury at construction sites. Based on the Bureau of Labor Statistics (BLS) reports, an average of nearly three workers per day suffer fatal injuries from falling. Studies show that postural instability is the foremost cause of this disproportional falling rate. To study what affects the postural stability of construction workers, we conducted a series of experiments in the virtual reality (VR). Twelve healthy adults—all students at the University of Nebraska-Lincoln—were recruited for this study. During each trial, participants’ heart rates and postural sways were measured as the ...


Skip This Chore: Cleaning Your Air Conditioner Condenser Probably Won't Make It Work Better, David Yuill 2019 University of Nebraska-Lincoln

Skip This Chore: Cleaning Your Air Conditioner Condenser Probably Won't Make It Work Better, David Yuill

Architectural Engineering -- Faculty Publications

I asked my neighbor who hoses off his air conditioner condenser every spring why he does it. “Because my dad always told me I had to,” he said.

Conventional wisdom like what my neighbor’s dad imparted may always seem right. But through my HVAC scholarship – the study of heating, ventilation and air-conditioning systems – I’ve learned that this particular presumption is probably wrong.


Need For Aeromedical Evacuation High-Level Containment Transport Guidelines, Shawn G. Gibbs, Jocelyn J. Herstein, Aurora B. Le, Elizabeth L. Beam, Theodore J. Cieslak, James V. Lawler, Joshua L. Santarpia, Terry L. Stentz, Kelli R. Kopocis-Herstein, Chandran Achutan, Gary W. Carter, John J. Lowe 2019 Indiana University School of Public Health

Need For Aeromedical Evacuation High-Level Containment Transport Guidelines, Shawn G. Gibbs, Jocelyn J. Herstein, Aurora B. Le, Elizabeth L. Beam, Theodore J. Cieslak, James V. Lawler, Joshua L. Santarpia, Terry L. Stentz, Kelli R. Kopocis-Herstein, Chandran Achutan, Gary W. Carter, John J. Lowe

Architectural Engineering -- Faculty Publications

Circumstances exist that call for the aeromedical evacuation high-level containment transport (AE-HLCT) of patients with highly hazardous communicable diseases. A small number of organizations maintain AE-HLCT capabilities, and little is publicly available regarding the practices. The time is ripe for the development of standards and consensus guidelines involving AE-HLCT.


Benchmarking Image Processing Algorithms For Unmanned Aerial System-Assisted Crack Detection In Concrete Structures, Sattar Dorafshan, Robert J. Thomas, Marc Maguire 2019 Turner-Fairbank Highway Research Center

Benchmarking Image Processing Algorithms For Unmanned Aerial System-Assisted Crack Detection In Concrete Structures, Sattar Dorafshan, Robert J. Thomas, Marc Maguire

Architectural Engineering -- Faculty Publications

This paper summarizes the results of traditional image processing algorithms for detection of defects in concrete using images taken by Unmanned Aerial Systems (UASs). Such algorithms are useful for improving the accuracy of crack detection during autonomous inspection of bridges and other structures, and they have yet to be compared and evaluated on a dataset of concrete images taken by UAS. The authors created a generic image processing algorithm for crack detection, which included the major steps of filter design, edge detection, image enhancement, and segmentation, designed to uniformly compare dierent edge detectors. Edge detection was carried out by six ...


Hvac System Remote Monitoring And Diagnosis, Jeffrey N. Arensmeier, Gregg M. Hemmelgarn, Fadi M. Alsaleem, Priotomo Abiprojo 2019 Fenton, MO

Hvac System Remote Monitoring And Diagnosis, Jeffrey N. Arensmeier, Gregg M. Hemmelgarn, Fadi M. Alsaleem, Priotomo Abiprojo

Architectural Engineering -- Faculty Publications

A monitoring system for an HVAC system of a building includes a monitoring server located remotely from the building. The monitoring server receives, from a device installed at the building, (i) time-domain current data based on a measured aggregate current supplied to a plurality of components of the HVAC system, and (ii) data based on frequency-domain current data of the measured aggregate current. Based on the received data, the monitoring server accesses (i) whether a failure has occurred in a first com ponent of the plurality of components and (ii) generates a preliminary advisory in response to determining that the ...


Heat Pump And Air Conditioning Grading Systems And Methods, Fadi Mohammad Alsaleem 2019 Troy, OH

Heat Pump And Air Conditioning Grading Systems And Methods, Fadi Mohammad Alsaleem

Architectural Engineering -- Faculty Publications

An expectation module determines an expected average power consumption of a heat pump for a predetermined period as a function of indoor and outdoor temperatures of the building during the predetermined period. A difference module determines a power difference between an average power consumption of the heat pump during the predeter mined period and the expected average power consumption of the heat pump for the predetermined period. A grade determination module determines a grade of the heat pump for the predetermined period based on the power difference of the predetermined period. A reporting module generates a displayable report including the ...


Building Envelope And Interior Grading Systems And Methods, Fadi Mohammad Alsaleem 2019 Troy, OH

Building Envelope And Interior Grading Systems And Methods, Fadi Mohammad Alsaleem

Architectural Engineering -- Faculty Publications

A difference module determines differences between an outdoor ambient temperature and an indoor temperature, determines a first average of the differences , and determines a second average of the differences. A storing module stores a first data point, the first data point including the first average and a first total run time of a heating, ventilation, and/or air conditioning (HVAC) system, and stores a second data point, the second data point including the second average and a second total run time of the HVAC system. A fitting module fits a line to the first and second data points. An envelope ...


Smart Proxy Modeling Of Sacroc Co2-Eor, Gholami Vida, Mohaghegh D. Shahab, Maysami Mohammad 2019 Southern California Gas Company

Smart Proxy Modeling Of Sacroc Co2-Eor, Gholami Vida, Mohaghegh D. Shahab, Maysami Mohammad

Faculty & Staff Scholarship

Large CO2-enhanced oil recovery (EOR) projects usually contain an abundance of geological and good performance data. While this volume of data leads to robust models, it often results in difficult to manage, slow-running numerical flow models. To dramatically reduce the numerical run-times associated with the traditional simulation techniques, this work investigated the feasibility of using artificial intelligence and machine learning technologies to develop a smart proxy model of the Scurry Area Canyon Reef Operators Committee (SACROC) oilfield, located in the Permian Basin, TX, USA. Smart proxy models can be used to facilitate injection-production optimization for CO2-EOR projects. The use of ...


Engineering Magnetic Properties Of Nanoparticles For Biomedical Applications And Magnetic Thin Film Composite Heterostructures For Device Applications., Shivakumar Hunagund 2019 Virginia Commonwealth University

Engineering Magnetic Properties Of Nanoparticles For Biomedical Applications And Magnetic Thin Film Composite Heterostructures For Device Applications., Shivakumar Hunagund

Theses and Dissertations

The motivation of this study is to investigate the size dependent properties of Gadolinium silicide nanoparticles and their potential applications in Biomedicine. We use two approaches in our investigation - size dependence and possible exchange interaction in a core-shell structure. Past results showed Gd5Si4 NPs exhibit significantly reduced echo time compared to superparamagnetic iron oxide nanoparticles (SPION) when measured in a 7 T magnetic resonance imaging (MRI) system. This indicates potential use of Gd5Si4 ferromagnetic nanoparticles as T2 contrast agents for MRI.

Until recently most contrast agents (CA) that are used in Magnetic Resonance Imaging ...


Differential Mobility Classifiers In The Non-Ideal Assembly, Thamir Alsharifi 2019 Virginia Commonwealth University

Differential Mobility Classifiers In The Non-Ideal Assembly, Thamir Alsharifi

Theses and Dissertations

The differential mobility classifier (DMC) is one of the core components in electrical mobility particle sizers for sizing sub-micrometer particles. Designing the DMC requires knowledge of the geometrical and constructional imperfection (or tolerance). Studying the effects of geometrical imperfection on the performance of the DMC is necessary to provide manufacturing tolerance and it helps to predict the performance of geometrically imperfect classifiers, as well as providing a calibration curve for the DMC. This thesis was accomplished via studying the cylindrical classifier and the parallel plate classifier. The numerical model was built using the most recent versions of COMSOL Multiphysics® and ...


The Role Of Stakeholders After Development Of The Baseline Scheduled Maintenance Program, Danita Baghdasarin 2019 Boeing

The Role Of Stakeholders After Development Of The Baseline Scheduled Maintenance Program, Danita Baghdasarin

International Journal of Aviation, Aeronautics, and Aerospace

The principles of systems engineering can be applied to various aviation systems. This position paper emphasizes the importance of stakeholder collaboration in the various stages of the system life cycle, where the system is the aircraft scheduled maintenance program and the stakeholders are the constituents of the Industry Steering Committee (ISC): regulatory authorities, original equipment manufacturers (OEMs), and operators. The author discusses accidents with maintenance-related contributing factors, and highlights opportunities to improve coordination among stakeholders in order to ensure safe and effective maintenance.


Sns Optical Fiber Structure Sensor For Direct Detection Of The Phase Transition In C18h38 N-Alkane Material, Wei Han, Marek Rebow, Xiaokang Lian, Dejun Liu, Gerald Farrell, Qiang Wu, Yuliya Semenova 2019 Technological University Dublin

Sns Optical Fiber Structure Sensor For Direct Detection Of The Phase Transition In C18h38 N-Alkane Material, Wei Han, Marek Rebow, Xiaokang Lian, Dejun Liu, Gerald Farrell, Qiang Wu, Yuliya Semenova

Articles

A singlemode-no-core-singlemode (SNS) fiber structure optical sensor for detecting the solid-liquid phase change in a phase change material: C18H38 n-alkane material (n-octadecane) is proposed and demonstrated. The transmission-type sensor probe consists of a short section of no-core fiber sandwiched between two sections of a singlemode fiber. Phase changes in n-octadecane are accompanied by large step-like variations of its refractive index (RI). Such a large discontinuous change of the n-octadecane’s RI during its phase transition, leads to the corresponding step-like change in the transmitted optical power that can reliably indicate the phase change of the sample in the vicinity of ...


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