Electrochemical micromachining: An environmentally friendly, high speed processing technology

1997 ◽  
Vol 42 (20-22) ◽  
pp. 3007-3013 ◽  
Author(s):  
Madhav Datta ◽  
Derek Harris
Keyword(s):  
High Speed ◽  
Environmentally Friendly ◽  
Processing Technology ◽  
Electrochemical Micromachining

scholarly journals Cycloaddition of Thiourea- and Guanidine-Substituted Furans to Dienophiles: A Comparison of the Environmentally-Friendly Methods

2020 ◽  
Vol 3 (1) ◽  
pp. 57
Author(s):  
Luka Barešić ◽  
Davor Margetić ◽  
Zoran Glasovac
Keyword(s):  
High Pressure ◽  
Functional Groups ◽  
Organic Synthesis ◽  
High Speed ◽  
Environmentally Friendly ◽  
Microwave Assisted ◽  
Pressure Synthesis ◽  
Ultrasound Assisted ◽  
Substituted Furans ◽  
Guanidine Moiety

The cycloaddition strategy was employed in order to obtain a 7-oxanorbornene framework substituted with a guanidine moiety or its precursor functional groups: protected amine or thiourea. In order to optimize the conditions for the cycloaddition, several environmentally-friendly methods—microwave assisted organic synthesis, high pressure synthesis, high speed vibrational milling, and ultrasound assisted synthesis—were employed. The outcomes of the cycloaddition reactions were interpreted in terms of endo/exo selectivity, the conversion of the reactants to the product, and the isolated yields. In general, our results indicated the HP and HSVM approaches as the methods of choice to give good yields and conversions.

The Prediction, Measurement, and Analysis of Wake Wash from Marine Vessels

1999 ◽  
Vol 36 (04) ◽  
pp. 248-260
Author(s):  
Stan Stumbo ◽  
Kenneth Fox ◽  
Frank Dvorak ◽  
Larry Elliot
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Marine Environment ◽  
High Speed ◽  
Puget Sound ◽  
Environmentally Friendly ◽  
Washington State ◽  
Successful Program ◽  
Measurement And Analysis ◽  
Marine Vessels

In the marine environment, wake wash from passing vessels can be detrimental to a shoreline environment, damage shoreline property and disturb or damage other marine operations. Slowdowns to prevent such impact can hamper or curtail high-speed vessel operations that depend on speed for successful service. To prevent this failure, low-wash vessel designs are needed and success must be assured before significant dollar investments are made. This paper describes establishment of "no harm" wash criteria, prediction of wash using computational fluid dynamics for various speeds of high-speed aluminum catamarans, techniques of measurement and analysis of the wash from actual vessels, and agreement between wash predictions and wash measurements. This paper documents a successful program which Washington State Ferries used to procure new, high-speed environmentally friendly passenger ferries for operation on Puget Sound.

Based on Digital Image Processing Ore Appraisal Method Research

2013 ◽  
Vol 385-386 ◽  
pp. 1500-1504
Author(s):  
Jiang Tao Huang ◽  
Jian Peng ◽  
Feng Bo Li
Keyword(s):  
Image Processing ◽  
Digital Image Processing ◽  
Digital Image ◽  
High Speed ◽  
Mineral Resources ◽  
Processing Technology ◽  
Image Processing Technology ◽  
Wide Range ◽  
Testing Field ◽  
Processing Techniques

with high speed development of the digital image processing technology, and computer image processing technology used in scientific research more and more widely. Mineral, resources and environment, and other fields, image processing technology also has a wide range of applications. This paper is the application of digital image processing techniques to realize to study all the features of ore and automatically recognize ore , pattern recognition method applied to mineral recognition and testing field, so as to achieve the goal of mineral appraisal.

Study on Processing Technology of Waste Tire Crumb Rubber Modified Asphalt

2011 ◽  
Vol 305 ◽  
pp. 402-405 ◽  
Author(s):  
Lan Yun Chen ◽  
Zhuo Hong Cong ◽  
Qing Long You ◽  
Nan Xiang Zheng
Keyword(s):  
High Speed ◽  
Rapid Development ◽  
Crumb Rubber ◽  
Processing Technology ◽  
Processing Temperature ◽  
Time Processing ◽  
Waste Tires ◽  
Modified Asphalt ◽  
Waste Tire ◽  
Stirring Time

The rapid development of automotive brought a lot of accumulation of waste tires. Waste tire crumb rubber mixed with asphalt not only eliminates its impact to the environment, but also improves the performance of asphalt. Crumb rubber modified asphalt was made by the high-speed shearing device using waste tire crumb rubber mixed with Karamay-90 asphalt. The influence of mixed time, stirring time, processing temperature and the fineness of crumb rubber to the performance of crumb rubber modified asphalt was studied.The best processing technology of crumb rubber modified asphalt was obtained.

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