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Articles 61 - 70 of 70
Full-Text Articles in Engineering
Advances In High Resolution Imaging From Underwater Vehicles, Hanumant Singh, Christopher Roman, Oscar Pizarro, Ryan Eustice
Advances In High Resolution Imaging From Underwater Vehicles, Hanumant Singh, Christopher Roman, Oscar Pizarro, Ryan Eustice
Christopher N. Roman
Large area mapping at high resolution underwater continues to be constrained by the mismatch between available navigation as compared to sensor accuracy. In this paper we present advances that exploit consistency and redundancy within local sensor measurements to build high resolution optical and acoustic maps that are a consistent representation of the environment.
We present our work in the context of real world data acquired using Autonomous Underwater Vehicles (AUVs) and Remotely Operated Vehicles (ROVs) working in diverse applications including shallow water coral reef surveys with the Seabed AUV, a forensic survey of the RMS Titanic in the North Atlantic …
Synthetic Gecko Foot-Hairs From Multiwalled Carbon Nanotubes, Betul Yurdumakan, Nachiket R. Raravikar, Pulickel M. Ajayan, Ali Dhinojwala
Synthetic Gecko Foot-Hairs From Multiwalled Carbon Nanotubes, Betul Yurdumakan, Nachiket R. Raravikar, Pulickel M. Ajayan, Ali Dhinojwala
Ali Dhinojwala
We report a fabrication process for constructing polymer surfaces with multiwalled carbon nanotube hairs, with strong nanometer-level adhesion forces that are 200 times higher than those observed for gecko foot-hairs.
Analysis Of Welding Fumes: A Short Notice On The Comaprison Between Two Sampling Techniques, João F. Gomes
Analysis Of Welding Fumes: A Short Notice On The Comaprison Between Two Sampling Techniques, João F. Gomes
João F Gomes
No abstract provided.
On-Chip Implementation Of Cascaded Integrated Comb Filters (Cic) For Dsp Application, Rozita Teymourzadeh, Masuri Othman
On-Chip Implementation Of Cascaded Integrated Comb Filters (Cic) For Dsp Application, Rozita Teymourzadeh, Masuri Othman
Dr. Rozita Teymourzadeh, CEng.
Production Of Liquid Alkanes By Aqueous-Phase Processing Of Biomass-Derived Carbohydrates, George W. Huber, J. Chheda, C. B. Barrett, J. A. Dumesic
Production Of Liquid Alkanes By Aqueous-Phase Processing Of Biomass-Derived Carbohydrates, George W. Huber, J. Chheda, C. B. Barrett, J. A. Dumesic
George W. Huber
Liquid alkanes with the number of carbon atoms ranging from C7 to C15 were selectively produced from biomass-derived carbohydrates by acid-catalyzed dehydration, which was followed by aldol condensation over solid base catalysts to form large organic compounds. These molecules were then converted into alkanes by dehydration/hydrogenation over bifunctional catalysts that contained acid and metal sites in a four-phase reactor, in which the aqueous organic reactant becomes more hydrophobic and a hexadecane alkane stream removes hydrophobic species from the catalyst before they go on further to form coke. These liquid alkanes are of the appropriate molecular weight to be used as …
Grams: A Grid Resource Analysis And Monitoring System, Hong-Ning Dai, Minglu Li, Linpeng Huang, Yi Wang, Feng Hong
Grams: A Grid Resource Analysis And Monitoring System, Hong-Ning Dai, Minglu Li, Linpeng Huang, Yi Wang, Feng Hong
Hong-Ning Dai
In this paper we propose GRAMS which is a resource monitoring and analysis system in Grid environment. GRAMS provides an infrastructure for conducting online monitoring and performance analysis of a variety of Grid resources including computational and network devices. Based on analysis on real-time event data as well as historical performance data, steering strategies are given for users or resource scheduler to control the resources. Besides, GRAMS also provides a set of management tools as well as services portals for user not only accessing performance data but also handling these resources. Moreover, a preliminary system prototype is presented.
Multistakeholder Evaluation Of Condominial Sewer Services, Earthea Nance
Multistakeholder Evaluation Of Condominial Sewer Services, Earthea Nance
Earthea Nance, PhD (Stanford University, 2004)
No abstract provided.
10 Inventions On Keyboard Attachments: A Triz Based Analysis, Umakant Mishra
10 Inventions On Keyboard Attachments: A Triz Based Analysis, Umakant Mishra
Umakant Mishra
Although the primary objective of the keyboard to input data into the computer, the advanced keyboards keep various other things in mind, such as, how to use the same keyboard for various other purposes, or how to use the same keyboard efficiently by using various other attachments to the keyboard. This objective led to various inventions on keyboard attachments, some of which are illustrated below in this article. This article illustrates 10 inventions on various keyboard attachments from US patent database. Each different attachment improves the usability of the keyboard in some way or other. Some attachments illustrated are template …
Small Scale Incinerator For Biomass, With A Bubbling Fluidized Bed. I. Combustion Of Sewage Sludge, Jerzy Baron, Sylwia Chrupek, Stanislaw Kandefer, Malgorzata Olek, Malgorzata Pilawska, Jan Porzuczek, Jan Wrona, Witold Zukowski
Small Scale Incinerator For Biomass, With A Bubbling Fluidized Bed. I. Combustion Of Sewage Sludge, Jerzy Baron, Sylwia Chrupek, Stanislaw Kandefer, Malgorzata Olek, Malgorzata Pilawska, Jan Porzuczek, Jan Wrona, Witold Zukowski
Witold Zukowski
Results are presented, obtained when sewage sludge was burned in a purpose-designed industrial installation, comprising a 1.5 MW bubbling fluidised bed combustor. Dried sewage sludge was used in the tests. The combustion process was stable, and since the moisture content of the dried sludge was low, no auxiliary fuel was required. Analysis of the flue gases has shown that the concentrations of SO2 and NOx are somewhat elevated, on account of rather high combined S and N content in the sludge. The results have confirmed that the technological solutions used were correct and that they can be used for economically …
Bioproduction Of 1,3-Propanediol Dehydrogenase – A Preliminary Overview, Chuen-Tat Kang
Bioproduction Of 1,3-Propanediol Dehydrogenase – A Preliminary Overview, Chuen-Tat Kang
Kang Chuen Tat (江俊达)
Overall rate of bioproduction in 1,3-propanediol dehydrogenase, an enzyme that catalyse the synthesis of the precursor of aromatic high quality plastic, could be affected by preliminary product 3-hydroxypropionaldehyde (HPA) where many structural properties have been summarily analysed via nuclear magnetic resonance (NMR), Fourier Transformed Infrared Spectroscopy (FTIR), High Performance Liquid Chromatography (HPLC), Gas Phase Chromatography (GPC), Scanning Electron Microscopy (SEM). Although the chemical instrumental analysis of the 3-hydroxypropionaldehyde (HPA) may not produce desired result but the data obtained could be useful for future similar analysis that are rare in bulk production. The microbial consumption of various media especially those with …