Engineering Commons^™

Agitated Fluidization Of Nanopowders Using Mechanical Stirring, Daniel Lepek, Christopher Loo

The 14th International Conference on Fluidization – From Fundamentals to Products

No abstract provided.

Fluidization Of Nanoparticles: The Effect Of Surface Characteristics, M. Tahmasebpoor, Lilian De Martin, M. Talebi, N. Mostoufi, J. R. Van Ommen

The 14th International Conference on Fluidization – From Fundamentals to Products

No abstract provided.

Pressure Drop Correlation For The Design Of Opensided Draft Tube Conical Spouted Beds, H. Altzibar, G. Lopez, I. Estiati, M. Olazar

The 14th International Conference on Fluidization – From Fundamentals to Products

No abstract provided.

Numerical Analysis Of The Dynamics In Gas-Solid Fluidized Beds And Experimental Validation Using Ultra-Fast X-Ray Tomography, Vikrant Verma, Niels G. Deen, Johan T. Padding, J.A.M. Kuipers, Martina Bieberle, Frank Barthel, Michael Wagner, Uwe Hampel

The 14th International Conference on Fluidization – From Fundamentals to Products

No abstract provided.

Study Of Flow Behavior In Bubbling Fluidized Bed Biomass Gasification Reactor Using Cfd Simulation, Rajan Kumar Thapa, Britt Margrethe Halvorsen

The 14th International Conference on Fluidization – From Fundamentals to Products

No abstract provided.

Theoretical Investigation Of The Behavior Of Cohesive Homogeneous Gas-Fluidized Beds, Oyebanjo Oke, Luca Mazzei, Paola Lettieri

The 14th International Conference on Fluidization – From Fundamentals to Products

No abstract provided.

Behavior Of Magnetofluidized Beds As Affected By Particle Size And Field Orientation, M. J. Espin, J. M. Valverde, M.A.S. Quintanilla

The 14th International Conference on Fluidization – From Fundamentals to Products

No abstract provided.

Integration Of High Level Cfd Process Simulation For Development Of Fluidised Bed Biomass Gasification, Martin Weng, Adlan Omer, Stefan Tschunko

The 14th International Conference on Fluidization – From Fundamentals to Products

No abstract provided.

Agglomerate Behaviour In A Recirculating Fluidized Bed With Sheds: Effect Of Agglomerate Properties, Francisco J. Sanchez, Cedric Briens, Franco Berruti, Murray Gray, Jennifer Mcmillan

The 14th International Conference on Fluidization – From Fundamentals to Products

No abstract provided.

Effect Of Electrostatic Forces On The Axial Diffusivity Of Solid Particles, M.A. Hassani, H.R. Norouzi, R. Zarghami, N. Mostoufi

The 14th International Conference on Fluidization – From Fundamentals to Products

No abstract provided.

Estimation Of The Circulating Time In A Largescale Fluidized Bed Using Dbm Simulation Data, Javier Sánchez-Prieto, Sergio Sánchez-Delgado, Néstor García Hernando, Javier Villa Briongos

The 14th International Conference on Fluidization – From Fundamentals to Products

No abstract provided.

3d Numerical Simulation Of Circulating Fluidized Bed: Comparison Between Theoretical Results And Experimental Measurements Of Hydrodynamic, Renaud Ansart, Mehrdji Hemati, Herve Neau, Olivier Simonin

The 14th International Conference on Fluidization – From Fundamentals to Products

No abstract provided.

Solids Back-Mixing In Cfb-Furnaces, Filip Johnsson, David Pallarès

The 14th International Conference on Fluidization – From Fundamentals to Products

No abstract provided.

Coarse-Grained Models For Momentum, Energy And Species Transport In Gas-Particle Flows, Sankaran Sundaresan, Stefan Radl, Christian C. Milioli, Fernando E. Milioli

The 14th International Conference on Fluidization – From Fundamentals to Products

No abstract provided.

Pattern Of Task Interpretation And Self-Regulated Learning Strategies Of High School Students And College Freshmen During An Engineering Design Project, Oenardi Lawanto, Deborah Butler, Sylvie Cartier, Harry B. Santoso, Wade H. Goodridge, Kevin N. Lawanto, David Clark

Engineering Education Faculty Publications

The objective of this exploratory study was to describe patterns in self-regulated learning (SRL) for secondary school and college freshmen while engaged in a design activity. The main research question guiding the study was: In what ways did secondary and first year college students differ in addressing an engineering design project? Specific focus was given by exploring how these two groups of students compared in their (1) task interpretation in relation to reported strategy use during the design process; and (2) task interpretation in relation to reported strategy use in project management. Students at one high school in the state …

A Community-Engagement-Based Design Project In Introductory Environmental Engineering, Mary P. Cardenas

All HMC Faculty Publications and Research

A collaborative, community-based design project was implemented in the upper-division undergraduate technical elective Introduction to Environmental Engineering at Harvey Mudd College. Students worked with multiple stakeholders in order to design a debris flow barrier for a wilderness land parcel acquired by a local conservancy group. The Rosemont Preserve is a wilderness area preserved in 2012 by the Arroyos and Foothills Conservancy.

The Conservancy is working to steward the land and to produce programs for the local community. The ecological resource is co-managed by LA County Public Works. After the 2009 brushfires, the County installed concrete K-Rail barriers to protect residential …

Evapotranspiration And Surface Energy Balance Of A Common Reed-Dominated Riparian System In The Platte River Basin, Central Nebraska, Isa Kabenge, Suat Irmak, John E. Gilley, George E. Meyer, Stevan Z. Knezevic, Timothy J. Arkebauer, Duane Woodward, Milton Moravek

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Quantifying actual evapotranspiration (ET_a) of riparian zones is important for more robust water balance analyses that will enable better planning, managing, and allocating of water resources as well as developing strategies to protect delicate riparian ecosystem functions. The ET_a, sensible heat flux (H), net radiation (R_n), soil heat flux (G), meteorological variables (air temperature, T_a; incoming shortwave radiation, R_s; wind speed, u₃; relative humidity, RH; vapor pressure deficit, VPD; precipitation, etc.), and albedo were measured on an hourly time step, and leaf area index (LAI) and plant height …

Structure And Properties Of Cocoons And Silk Fibers Produced By Attacus Atlas, Narendra Reddy, Yi Zhao, Yiqi Yang

Department of Textiles, Merchandising and Fashion Design: Faculty Publications

Silk fibers in the three layers of Attacus atlas (A. atlas) cocoons have morphological structure and tensile properties similar to that of Bombyx mori silk. Attempts are being made to produce silk for commercial applications from cocoons of relatively unknown wild insects due to the unique properties of the fibers and as a source of income and employment. In this research, A. atlas cocoons were used to study the chemical composition, morphology, physical structure and tensile properties of the silk fibers in the cocoons and ability of the fibers to support the attachment and proliferation of mouse fibroblast cells. It …

The Influence Of Personality And Ability On Undergraduate Teamwork And Team Performance, Jinny Rhee, David W. Parent, Anuradha Basu

Faculty Publications

The ability to work effectively on a team is highly valued by employers, and collaboration among students can lead to intrinsic motivation, increased persistence, and greater transferability of skills. Moreover, innovation often arises from multidisciplinary teamwork. The influence of personality and ability on undergraduate teamwork and performance is not comprehensively understood. An investigation was undertaken to explore correlations between team outcomes, personality measures and ability in an undergraduate population. Team outcomes included various self-, peer- and instructor ratings of skills, performance, and experience. Personality measures and ability involved the Five-Factor Model personality traits and GPA. Personality, GPA, and teamwork survey …

Santa Clara Magazine, Volume 54 Number 4, Spring/Summer 2013, Santa Clara University

Santa Clara Magazine

12 - KEEP THE DOOR OPEN By Jeff Zorn. For teaching and advising and a ministry that's blessed this place for 48 years-a colleague pays tribute to Charles Phipps, S.J.

16 - IN THIS TOGETHER By Mitch FINLEY '73. For folks retired but not at rest, Companions in Ignatian Service and Spirituality offers a way to do and be more.

18 - WALK ACROSS CALIFORNIA By Jesse Hamlin-with images by Robert Boscacci '14, Frederic Larson, and Edward Rooks. An epic journey in which one foot is put in front of the other to discover, up close and personal, who and …

Navigation & Control Of An Automated Swath Surface Vessel For Bathymetric Mapping, Ketan Rasal

Mechanical Engineering Master's Theses

With the abundant amount of water on the earth, the study of underwater terrain plays an important role in the use and sustainability of marine resources. A wide variety of technical systems are used to collect such bathymetric data, and autonomous vehicles are being explored as a manner in which to make this process more cost-effective. Students in Santa Clara University's Robotic Systems Laboratory are contributing to this effort through the development of an autonomous SWATH boat that can create such maps. As part of this thesis work, the navigation and control system of this SWATH boat has been significantly …

Dependence On Cyberscribes - Issues In E-Security, Thomas R. Mclean, Alexander B. Mclean

Journal of Business & Technology Law

No abstract provided.

Finite Element Analysis Of Thermomechanical Processes In Disk Clutch Systems, Zhuo Chen

Electronic Theses and Dissertations

The engagement of clutch system is a typical dynamic coupled temperature-displacement process which contains two or more sliding surfaces involved in frictional contact. This process influences evidently the thermal fatigue, noise and vibration of the clutch system. This effect can be more remarkable if the temperature distribution over the clutch disk is not uniform.

This thesis is organized into five chapters:

The first chapter is an introduction which reviews the background and previous work of thermoelastic instability and finite element analysis of clutch system and disk brake.

A parametric analysis of TEI (thermoelastic instability) is elaborated in the second chapter. …

Control Of Harmonics In 6-Pulse Rectifiers, Sudeep K. Pyakuryal

Electronic Theses and Dissertations

Harmonics are always present in electrical power systems. Harmonic distortion is harmless as long as its level is within the limit. However, with the recent rapid advancement of power electronics, i.e. non linear loads, the use of the variable speed drives are increasing day by day. Harmonics produced by non-linear loads are a potential risk if they are not evaluated, predicted, and controlled.

The power electronic switching devices like thyristor used in the rectifier circuits inject harmonic distortion to the utility grid in different applications. The harmonic distortion causes different problems in the power system. To minimize the unwanted effects …

Enhanced Tribological Properties Of Surfaces Patterned With Su8/Dlc Microstructures, Luke Osborn

Inquiry: The University of Arkansas Undergraduate Research Journal

In tribology (the study of friction, wear, and lubrication), it is known that micro-textured surfaces can reduce friction due to decreased contact area between two surfaces. The problem with many micro-textures, however, is their inability to withstand significant amounts of wear, thus limiting their potential uses and overall effectiveness. In this study, connected and isolated microstructures of SU8, a negative tone photoresist, coated with and without diamond-like carbon (DLC), were designed to investigate the effects of these microstructures and DLC coating on the tribological performance of a surface. Friction and wear studies were conducted using a tribometer; surface topography and …

Preparation Of New Versatile And Implantable Titanate Nanofiber-Bioscaffolds Via Efficient Cation Exchanges, Keaton Piper

Inquiry: The University of Arkansas Undergraduate Research Journal

For the first time in the implantable biomaterials field, efficient hydrothermal cation exchange methods were developed suitable for mass-production of implantable material. The cation exchange conditions were performed by various methods of temperature, pressure, and time exposure. To confirm both chemical and physical alteration of the scaffold, XRD shift analysis, EDX atomic composition, and SEM imaging were conducted. The optimal results are to use aqueous solutions of 0.5 M chloride salts in sealed heated containers at 180 ̊C for eight hours. Cation exchange capacities are determined for K+, Na+, Li+, Ca2+, and Sr2+; future studies demanding durable, highly specific composition …

Has Supply Chain Management Lost Its Relevance?, Natalie Descheres

Books/Book chapters

The context of business has changed dramatically over the last 15 years. The definition of need satisfaction, the shift from “dot to web” competition and the embedding of the organisation into a wider political and societal environment has transformed SCM contributions and the meaning of work for employees. Interdependence must evolve from the do-it-alone approach and yet the ashes are not proving fertile ground. In many ways, traditional models of management have not kept up with the changes and are taken aback by the complexity that surrounds us. Complexity is however not a feature of our world, but one of …

High Sensitivity Fiber Refractometer Based On An Optical Microfiber Coupler, Lin Bo, Pengfei Wang, Yuliya Semenova, Gerald Farrell

Articles

An optical microfiber coupler-based refractive index sensor is proposed and experimentally demonstrated in this letter. A microfiber coupler with a minimum diameter of 2.5 µm and a uniform waist with a length of 2 mm is fabricated and used for sensing surrounding refractive index. Both theoretical and experimental results have shown that the spectral response of the proposed microfiber coupler is highly sensitive to the surrounding refractive index over the range from 1.3340 to 1.3800. An average sensitivity of 2723 nm/RIU over this entire refractive index range has been achieved experimentally. Furthermore, for the refractive index range from 1.3340 to …

Molecular Crystallization Directed By Nanoparticles And Nanopatterns, Li Li

Wayne State University Dissertations

This dissertation focuses on nanoparticle/nanopattern-induced molecular self-assembly and crystallization. We propose a universal strategy to synthesize organic/inorganic hybrid nanostructures using inorganic nanoparticles and nanoparticle arrays to induce organic crystalline compound nucleation and crystallization. The nanoconfinement effect will be addressed to study molecular crystallization by changing nanoparticle size, curvature and separation distance. Atomic force microscopy (AFM) is the main characterization tool to investigate the topography of the hybrid nanostructures and the nucleation and crystallization process. This work will contribute to the understanding of seed mediated nucleation and crystallization, molecular ordering under nanoconfinement and hybrid nanomaterials.

Hypervelocity Impact Testing Of Multiwall Targets Using Multiple Simultaneously Launched Projectiles, William P. Schonberg, Steve Evans, Michael D. Bjorkman

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Multiwall shield designs for spacecraft have been studied extensively in the last four decades as a means of reducing the perforation threat of the near-Earth particulate environment over equivalent single-wall structures. The performance of an impact shield is typically characterized by its ballistic limit equation, which is obtained through high-speed impact tests that typically use spherical projectiles fired in light gas guns. Traditional firings employ only one projectile per launch package. However, some facilities have taken to launching multiple projectiles of different sizes in a single launch package. In light of the significant role played by a ballistic limit equation …