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Articles 31 - 46 of 46
Full-Text Articles in Engineering
Piezoresistive Properties Of Ito Strain Sensors Prepared With Controlled Nanoporosity, Otto J. Gregory, Tao You
Piezoresistive Properties Of Ito Strain Sensors Prepared With Controlled Nanoporosity, Otto J. Gregory, Tao You
Chemical Engineering Faculty Publications
A ceramic strain gage based on reactively sputtered indium-tinoxide (ITO) thin films is being developed to monitor the structural integrity of components employed in aerospace propulsion systems operating at temperatures in excess of 1500°C. The hightemperature stability and piezoresistive properties depend to a large extent on the thickness of the active ITO strain elements comprising these ceramic strain gages. Scanning electron microscopy of the thick ITO sensors revealed a partially sintered microstructure consisting of a contiguous network of submicrometer ITO particles with well-defined necks and isolated nanoporosity. It appeared that densification of the ITO particles was retarded during high-temperature exposure …
Numerical Investigation Of Boundary Conditions For Moving Contact Line Problems, Sandesh Somalinga, Arijit Bose
Numerical Investigation Of Boundary Conditions For Moving Contact Line Problems, Sandesh Somalinga, Arijit Bose
Chemical Engineering Faculty Publications
When boundary conditions arising from the usual hydrodynamic assumptions are applied, analyses of dynamic wetting processes lead to a well-known nonintegrable stress singularity at the dynamic contact line, necessitating new ways to model this problem. In this paper, numerical simulations for a set of representative problems are used to explore the possibility of providing material boundary conditions for predictive models of inertialess moving contact line processes. The calculations reveal that up to Capillary number Ca=0.15, the velocity along an arc of radius 10Li (Li is an inner, microscopic length scale! from the dynamic contact line is independent of …
Robust Course-Boundary Extraction Algorithms For Autonomous Vehicles, Chris Roman, Charles Reinholtz
Robust Course-Boundary Extraction Algorithms For Autonomous Vehicles, Chris Roman, Charles Reinholtz
Graduate School of Oceanography Faculty Publications
Practical autonomous robotic vehicles require dependable methods for accurately identifying course or roadway boundaries. The authors have developed a method to reliably extract the boundary line using simple dynamic thresholding, noise filtering, and blob removal. This article describes their efforts to apply this procedure in developing an autonomous vehicle.
Investigation Of Wetting Hydrodynamics Using Numerical Simulations, David E. Finlow, Prakash R. Kota, Arijit Bose
Investigation Of Wetting Hydrodynamics Using Numerical Simulations, David E. Finlow, Prakash R. Kota, Arijit Bose
Chemical Engineering Faculty Publications
Meniscus shapes from a simulation of a plate immersing into an infinitely deep liquid bath, for a range of outer length scales, have been obtained numerically. These have been compared with the leading‐order prediction from a three‐region asymptotic analysis done in the double limit, Capillary number, Ca→0, LS/LC→0, with Ca ln(LC/LS) of O(1), where LS and LC represent the slip length and an outer macroscopic length, respectively. For Ca<0.01, the numerically computed and the perturbation solutions show excellent agreement. Within this range of Ca, the meniscus slope at a distance 10LS from the dynamic contact line is geometry independent, that is, does not vary with changes …
Large Scale Isolation Of Expression Vector Cassette By Magnetic Triple Helix Affinity Capture, Srinivas V. Sonti, Matthew C. Griffor, T. Sano, S. Narayanswami, Arijit Bose, C. R. Cantor, Albert P. Kausch
Large Scale Isolation Of Expression Vector Cassette By Magnetic Triple Helix Affinity Capture, Srinivas V. Sonti, Matthew C. Griffor, T. Sano, S. Narayanswami, Arijit Bose, C. R. Cantor, Albert P. Kausch
Chemical Engineering Faculty Publications
No abstract provided.
Synthesis Of Aluminum Hydroxide Nanoparticles In Spontaneously Generated Vesicles, Iskandar I. Yaacob, Suhas Bhandarkar, Arijit Bose
Synthesis Of Aluminum Hydroxide Nanoparticles In Spontaneously Generated Vesicles, Iskandar I. Yaacob, Suhas Bhandarkar, Arijit Bose
Chemical Engineering Faculty Publications
Unilamellar vesicles, formed spontaneously by mixing single-tailed cationic (cetyl trimethyl ammonium tosylate, CTAT) and anionic aqueous solutions of (sodium dodecyl benzene sulfonate, SDBS) surfactants have been used as reactors for the aqueous phase precipitation of nanometer sized particles within their inner cores. AlCl3 solution was encapsulated within these vesicles, aluminum ions were replaced with sodium ions in the extravesicular phase, and sodium hydroxide was then added to the extravesicular region. Hydroxyl ions penetrate through the vesicle walls and react with the available aluminum in the intravesicular region to form the product. The morphology and sizes of these particles were examined …
Efficiency Of The Electric Lighting Plant Of The Rhode Island College Of Agriculture And Mechanic Arts, John Joseph Fry
Efficiency Of The Electric Lighting Plant Of The Rhode Island College Of Agriculture And Mechanic Arts, John Joseph Fry
Student and Lippitt Prize essays
A study of the functionality of the electric system at Rhode Island College (University of Rhode Island).
Evolution Of The Dynamo, Ralph Nelson Soule
Evolution Of The Dynamo, Ralph Nelson Soule
Student and Lippitt Prize essays
This essay supplies an extensive history of electricity beginning in 600 BC to 1900, chronicling the evolution of the dynamo and its uses.
Artificial Refrigeration, Carroll Knowles
Artificial Refrigeration, Carroll Knowles
Student and Lippitt Prize essays
Discusses the principles of artificial refrigeration, reviewing agents, engineering methods and transportation of refrigerated foods.
Heating And Ventilation, Blydon Ellery Kenyon
Heating And Ventilation, Blydon Ellery Kenyon
Student and Lippitt Prize essays
A survey of current practices in heating and ventilation systems is discussed with emphasis on the benefits of adequate heating and ventilation in all school buildings. Cited are air experiments at Davis Hall and the systems in Lippitt Hall (Rhode Island State College), the State Normal School in Providence and the Mayhew School in Boston. The essay argues that individual building and use dictate the most efficient system necessitating a working relationship between architects and heating engineers.
Test Of High-Speed Engine, William Frazier Owen
Test Of High-Speed Engine, William Frazier Owen
Student and Lippitt Prize essays
Discusses the best ways in which a steam engine can function by using measurements from an actual steam engine. The essay ultimately determines that a steam engine is at its highest efficiency when carrying the largest load possible.
Lubricating Oils, George Albert Sherman
Lubricating Oils, George Albert Sherman
Student and Lippitt Prize essays
This essay reviews the elements that would make a lubricating oil effective in preventing wear on an object or machine.
A Central Heating-Plant For The Rhode Island College, Albert Prince Kenyon
A Central Heating-Plant For The Rhode Island College, Albert Prince Kenyon
Student and Lippitt Prize essays
A proposal for transferring the University of Rhode Island’s heating system to a central structure that would ensure safety, financial savings and convenience.
Jackscrews, Albert Lewis Kenyon
Jackscrews, Albert Lewis Kenyon
Student and Lippitt Prize essays
Definition, development, and description of the jackscrew, a device for the application of the screw to the moving of heavy weights.
How Electricity May Be Used To Operate Machinery, John Franklin Knowles
How Electricity May Be Used To Operate Machinery, John Franklin Knowles
Student and Lippitt Prize essays
Explores the uses of electricity in a machine shop in shifting from belt and shaft systems to the use of electric plants.
Steam Boilers, George Clarence Ammonds
Steam Boilers, George Clarence Ammonds
Student and Lippitt Prize essays
Describes the varied types of steam boilers, their construction and care.