The Experts below are selected from a list of 99 Experts worldwide ranked by ideXlab platform
Kuo-hua Wang - One of the best experts on this subject based on the ideXlab platform.
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Photocatalytic degradation of wastewater from Manufactured Fiber by titanium dioxide suspensions in aqueous solution: a feasibility study
Water Science and Technology, 2000Co-Authors: Yung-hsu Hsieh, Kuo-hua Wang, C.y. ChangAbstract:This investigation used wastewater from Manufactured Fiber plant for studying the effect of controlling variables on the COD removal efficiency by photocatalyzed degradation of organic pollutants in the presence of titanium dioxide catalyst. By using BOD/COD ratio as index, the treatment of raw wastewater was evaluated for its change of biodegradability as a feasibility in the pre-treatment of biological treatment. The experimental results indicated that with the Janssen Chemica TiO 2 as catalyst, the optimal addition was 0.25 g/L with increasing COD removal for decreasing pH value. Both increased light intensity and continuous aeration increased COD removal efficiency, particularly under continuous aeration for significantly raising the ratio of BOD/COD to improve efficiency of subsequent biological treatment.
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Photocatalytic degradation of wastewater from Manufactured Fiber by titanium dioxide suspensions in aqueous solution
Environment International, 1999Co-Authors: Kuo-hua WangAbstract:This investigation concerned the use of titanium dioxide irradiated with UV light of 365 nm wavelength in a jacketed cylindrical glass reactor for the removal of organic pollutants from the final settling tank of wastewater from Manufactured Fiber production. The controlling factors of the feasibility studies included the amount of titanium dioxide, pH value, light intensity, and aeration on the decomposition. The results indicated that, with 0.25 g/L TiO2, optimum decomposition could be attained. An excess amount of TiO2 could block the light passage and lower the efficiency. The lower the pH value, the better the decomposition. The decomposition of organic pollutants was in proportion to the light intensity, while aeration was a decisive controlling factor, with dissolved organic carbon (DOC) removal efficiency from 30% without aeration to 75% with aeration.
Byoungho Lee - One of the best experts on this subject based on the ideXlab platform.
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A simple Fiber-optic current sensor using a long-period Fiber grating inscribed on a polarization-maintaining Fiber as a sensor demodulator
Sensors and Actuators A-physical, 2004Co-Authors: Yong Wook Lee, Ilyong Yoon, Byoungho LeeAbstract:Abstract We propose a simple Fiber-optic current sensor based on the Faraday rotation effect, which firstly utilizes a Fiber-compatible polarization analyzer as a sensor demodulator. The Fiber polarization analyzer (demodulator) was fabricated by inscribing a long-period Fiber grating on a polarization-maintaining Fiber. The Manufactured Fiber polarization analyzer has the polarization extinction ratio of more than 25 dB at the fixed wavelength of 1522.5 nm. Current sensing up to 600 A rms was demonstrated in a simple and cost-effective way, showing a good linearity.
M.e. Froggatt - One of the best experts on this subject based on the ideXlab platform.
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An Erbium Fiber Fabricated by the “Core-Suction” Technique
Journal of Lightwave Technology, 2009Co-Authors: Nitin K. Goel, R.h. Stolen, M.e. FroggattAbstract:An erbium doped Fiber preform having a lead germanate erbium glass core with silica cladding was fabricated by a newly developed technique named ?core-suction?. This preform was then drawn into Fiber and Fiber cross-section, loss spectrum and refractive index profile measured. A 30 cm piece of the Manufactured Fiber was spliced to a standard silica Fiber using a commercial available splicer. This spliced Fiber was then used to setup an erbium doped Fiber amplifier (EDFA) and gain spectrum of the amplifier measured. Distributed gain of the Manufactured erbium Fiber was measured using an optical frequency domain reflectometry (OFDR) based optical backscatter reflectometer (OBR). It is demonstrated that the ?core-suction? technique can be used to make a high-gain amplifier that is compatible with conventional silica Fibers.
Yong Wook Lee - One of the best experts on this subject based on the ideXlab platform.
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A simple Fiber-optic current sensor using a long-period Fiber grating inscribed on a polarization-maintaining Fiber as a sensor demodulator
Sensors and Actuators A-physical, 2004Co-Authors: Yong Wook Lee, Ilyong Yoon, Byoungho LeeAbstract:Abstract We propose a simple Fiber-optic current sensor based on the Faraday rotation effect, which firstly utilizes a Fiber-compatible polarization analyzer as a sensor demodulator. The Fiber polarization analyzer (demodulator) was fabricated by inscribing a long-period Fiber grating on a polarization-maintaining Fiber. The Manufactured Fiber polarization analyzer has the polarization extinction ratio of more than 25 dB at the fixed wavelength of 1522.5 nm. Current sensing up to 600 A rms was demonstrated in a simple and cost-effective way, showing a good linearity.
Roman Kaczyński - One of the best experts on this subject based on the ideXlab platform.
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Tribological Behaviour of Additively Manufactured Fiber-Reinforced Thermoplastic Composites in Various Environments.
Polymers, 2020Co-Authors: Artur Prusinowski, Roman KaczyńskiAbstract:Polymer composites with increased utility properties are becoming competition for conventional materials, in conjunction with additive manufacturing techniques. The aim of this study was to evaluate tribological characteristics of fibrous composites produced in fused deposition modeling (FDM) with the use of an innovative head with symmetrical feeding of the matrix material. Analysis of the influence of composite-forming temperature on their tribological properties allowed the determining of the optimal printing process parameters for this group of composites. Significant differences in the friction process of the same reinforced materials were observed in dry and wet environments. Fibrous composites showed 10 times lower wear intensity as well as two times lower friction value in water than in air. Research shows friction in the water environment ensures more even wear of the surface of the composites involved in the work. The article contains 3D microscopic imaging of the friction plane of the tested composites and a description of a typical course of material wear is described.