Engineering Commons^™

Study Of Organic Droplets On Metal Surfaces In Aqueous Surfactant Solutions In The Presence Of An Applied Electric Potential, Samuel Morton, R. Counce, D. Keffer, D. Depaoli, M. Hu

Samuel A Morton

No abstract provided.

Optical And Acoustic Habitat Characterization With The Seabed Auv, Hanumant Singh, Ryan Eustice, Oscar Pizarro, Christopher Roman

Christopher N. Roman

The Seabed AUV is an Autonomous Underwater Vehicle (AUV) built to serve as a readily available and operationally simple tool for high resolution imaging. It is a hover-capable vehicle that performs optical sensing with a 12 bit 1280/spl times/1024 CCD camera and acoustic high resolution mapping using an MST 300 kHz sidescan and a 675 kHz pencil beam bathymetric sonar. The AUV has been designed for operations from small vessels with minimal support equipment. It has an operational depth of 2000 meters and at 1 m/s can run for up to 10 hours. In this paper we report on the …

Student Inquiries Into Neglected Research For A Sustainable Society: Communication And Application, Joshua Pearce, Chris Russill

Joshua M. Pearce

Microphysics Of Atmospheric Carbon Dioxide Uptake By A Cloud Droplet Containing A Solid Nucleus, Wei-Hsin Chen

Wei-Hsin Chen

No abstract provided.

Transient Mass Transfer And Vortex Bifurcation Of An Aerosol Droplet In Motion, Wei-Hsin Chen

Wei-Hsin Chen

No abstract provided.

Wind Gusts, Christopher Roman

Christopher N. Roman

Article that appeared in Sail magazine (ISSN: 0036-2700).

Photonic Crystal Resonators”,, Andrew Sarangan

Andrew Sarangan

University of Cincinnati ECE Dept Seminars

Waves And Current, Christopher Roman

Christopher N. Roman

Article that appeared in Sail magazine (ISSN: 0036-2700).

The Mysterious Marine Layer, Christopher Roman

Christopher N. Roman

Article that appeared in Sail magazine (ISSN: 0036-2700).

Waste Burning And Heat Recovery Characteristics Of A Mass Burn Incineration System, Wei-Hsin Chen

Wei-Hsin Chen

No abstract provided.

Cell And Organ Printing 2: Fusion Of Cell Aggregates In Three-Dimensional Gels, Thomas Boland, Vladimir Mironov, Anna Gutowska, Elisabeth Roth, Roger Markwald

Thomas Boland

We recently developed a cell printer (Wilson and Boland, 2003) that enables us to place cells in positions that mimic their respective positions in organs. However, this technology was limited to the printing of two-dimensional (2D) tissue constructs. Here we describe the use of thermosensitive gels to generate sequential layers for cell printing. The ability to drop cells on previously printed successive layers provides a real opportunity for the realization of three-dimensional (3D) organ printing. Organ printing will allow us to print complex 3D organs with computer-controlled, exact placing of different cell types, by a process that can be completed …

Cell And Organ Printing 1: Protein And Cell Printers, Cris Wilson, Thomas Boland

Thomas Boland

We have developed several devices for positioning organic molecules, molecular aggregates, cells, and single-cell organisms onto solid supports. These printers can create stable, functional protein arrays using an inexpensive technology. The cell printer allows us to create cell libraries as well as cellular assemblies that mimic their respective position in organs. The printers are derived from commercially available ink-jet printers that are modified to dispense protein or cell solutions instead of ink. We describe here the modifications to the print heads, and the printer hardware and software that enabled us to adapt the ink-jet printers for the manufacture of cell …

Autonomous Vehicles Research Laboratory – Phase Ii: Mobile Robots And A Walking Internet, Raúl Ordóñez

Raúl Ordóñez

PI, Funded by the University of Dayton Research Council, $8,000.

Bayesian Modelling And Forecasting Of Intra-Day Electricity Load, Remy Cottet, Michael Smith

Michael Stanley Smith

With the advent of wholesale electricity markets there has been renewed focus on intra-day electricity load forecasting. This paper employs a multi-equation regression model with a diagonal first order stationary vector autoregresson (VAR) for modeling and forecasting intra-day electricity load. The correlation structure of the disturbances to the VAR and the appropriate subset of regressors are explored using Bayesian model selection methodology. The full spectrum of finite sample inference is obtained using a Bayesian Markov chain Monte Carlo sampling scheme. This includes the predictive distribution of load and the distribution of the time and level of daily peak load, something …

Characterization Of Patterned Self-Assembled Monolayers And Protein Arrays Generated By The Ink-Jet Method, Laura Pardo, Thomas Boland

Thomas Boland

Commercial ink-jet printers were used with little modification to deposit alkanethiols onto gold substrata and several proteins onto silica supports. The resulting patterns of alkanethiols form self-assembled layers comparable to those obtained by microcontact printing or solution adsorption. The method has been used successfully to create binary chemical gradients and patterns of tertiary functionality. The proteins form dense patterns on the substrates and seem to maintain their configuration as measured by their ability to bind their specific ligands. Four different proteins were printed simultaneously, allowing for positive and negative controls. This "drop-on-demand" printing method is an inexpensive, flexible alternative to …

Organ Printing: Computer Aided Jet Based 3d Tissue Engineering, Vladimir Mironov, Thomas Boland, Thomas Trusk, Gabor Forgacs, Roger Markwald

Thomas Boland

Tissue engineering technology promises to solve the organ transplantation crisis. However, assembly of vascularized 3D soft organs remains a big challenge. Organ printing, which we define as computer-aided, jet-based 3D tissue-engineering of living human organs, offers a possible solution. Organ printing involves three sequential steps: pre-processing or development of "blueprints" for organs; processing or actual organ printing; and postprocessing or organ conditioning and accelerated organ maturation. A cell printer that can print gels, single cells and cell aggregates has been developed. Layer-by-layer sequentially placed and solidified thin layers of a thermo-reversible gel could serve as "printing paper". Combination of an …

A Quantitative Approach To Studying Structures And Orientation At Self- Assembled Monolayer/Fluid Interfaces", Laura Pardo, Thomas Boland

Thomas Boland

Self-assembled monolayers (SAMs) have become a standard tool for exploring surface interactions. Although well characterized, SAMs are known to undergo structural and conformational changes in the presence of solution, yet the ability to quantify these changes remains an obstacle due to limited analytical techniques. In this study, we determine changes in structure and conformation of CH3, OH, and COOH terminated hexadecanethiols on gold in water by means of a new technique known as evanescence reflection spectroscopy. This FTIR application, in conjunction with a semiempirical formalism, is capable of providing both qualitative and quantitative understanding of the molecular structure and orientation …

Application Of Fuzzy Logic To Systems Engineering, Caroline Lubert

Caroline P Lubert

No abstract provided.