The Experts below are selected from a list of 233901 Experts worldwide ranked by ideXlab platform
B H Kolner - One of the best experts on this subject based on the ideXlab platform.
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upconversion time microscope demonstrating 103 magnification of femtosecond waveforms
Optics Letters, 1999Co-Authors: C.v. Bennett, B H KolnerAbstract:We present the operational principles and results of a temporal imaging system, configured as a time microscope, that achieves 103× magnification of waveforms with 300-fs resolution and a 5.7-ps field of view. The quadratic-phase time-lens element is realized by upconversion of the dispersed input waveform with a linearly chirped 5-THz bandwidth pump. The system allows expansion of ultrafast optical waveforms to a time scale that is directly accessible with slower Conventional Technology, in real time, on a single-shot basis.
C.v. Bennett - One of the best experts on this subject based on the ideXlab platform.
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upconversion time microscope demonstrating 103 magnification of femtosecond waveforms
Optics Letters, 1999Co-Authors: C.v. Bennett, B H KolnerAbstract:We present the operational principles and results of a temporal imaging system, configured as a time microscope, that achieves 103× magnification of waveforms with 300-fs resolution and a 5.7-ps field of view. The quadratic-phase time-lens element is realized by upconversion of the dispersed input waveform with a linearly chirped 5-THz bandwidth pump. The system allows expansion of ultrafast optical waveforms to a time scale that is directly accessible with slower Conventional Technology, in real time, on a single-shot basis.
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Up-conversion time microscope demonstrates 103x magnification of an ultrafast waveforms with 300 fs resolution
1998Co-Authors: C.v. Bennett, Brian H. KolnerAbstract:We have demonstrated a system for the temporal expansion of arbitrarily shaped ultrafast optical waveforms based on the principle of temporal imaging. This system has demonstrated 103x magnification of an input signal with 300 fs resolution, thus allowing ultrafast phenomena to be recorded with slower Conventional Technology. The physics of temporal imaging work on a single shot basis, thus it is expected that this Technology will lead to a new class of single transient recorders with ultrafast resolution.
J. Winnick - One of the best experts on this subject based on the ideXlab platform.
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Electrochemical polishing of hydrogen sulfide from coal synthesis gas
Journal of Applied Electrochemistry, 1994Co-Authors: S. R. Alexander, J. WinnickAbstract:An advanced process has been developed for the separation of H_2S from coal gasification product streams through an electrochemical membrane. This Technology is developed for use in coal gasification facilities providing fuel for cogeneration coal fired electrical power facilities and molten carbonate fuel cell (MCFC) electrical power facilities. H_2S is removed from the syn-gas by reduction to the sulfide ion and hydrogen gas at the cathode. The sulfide ion migrates to the anode through a molten salt electrolyte suspended in an inert ceramic matrix. Once at the anode it is oxidized to elemental sulfur and swept away for condensation in an inert gas stream. The syn-gas is enriched with the hydrogen. Order of magnitude reductions in H_2S have been repeatedly recorded (100 ppm to 10 ppm H_2S) on a single pass through the cell. This process allows removal of H_2S without cooling the gas stream and with negligible pressure loss through the separator. Since there are no absorbents used, there is no absorption/regeneration step as with Conventional Technology. Elemental sulfur is produced as a byproduct directly, so there is no need for a Claus process for sulfur recovery. This makes the process economically attractive since it is much less equipment intensive than Conventional Technology.
S. R. Alexander - One of the best experts on this subject based on the ideXlab platform.
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Electrochemical polishing of hydrogen sulfide from coal synthesis gas
Journal of Applied Electrochemistry, 1994Co-Authors: S. R. Alexander, J. WinnickAbstract:An advanced process has been developed for the separation of H_2S from coal gasification product streams through an electrochemical membrane. This Technology is developed for use in coal gasification facilities providing fuel for cogeneration coal fired electrical power facilities and molten carbonate fuel cell (MCFC) electrical power facilities. H_2S is removed from the syn-gas by reduction to the sulfide ion and hydrogen gas at the cathode. The sulfide ion migrates to the anode through a molten salt electrolyte suspended in an inert ceramic matrix. Once at the anode it is oxidized to elemental sulfur and swept away for condensation in an inert gas stream. The syn-gas is enriched with the hydrogen. Order of magnitude reductions in H_2S have been repeatedly recorded (100 ppm to 10 ppm H_2S) on a single pass through the cell. This process allows removal of H_2S without cooling the gas stream and with negligible pressure loss through the separator. Since there are no absorbents used, there is no absorption/regeneration step as with Conventional Technology. Elemental sulfur is produced as a byproduct directly, so there is no need for a Claus process for sulfur recovery. This makes the process economically attractive since it is much less equipment intensive than Conventional Technology.
Fang Shen - One of the best experts on this subject based on the ideXlab platform.
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structure and functional properties of octenyl succinic anhydride modified starch prepared by a non Conventional Technology
Starch-starke, 2016Co-Authors: Wandong Liu, Jian Shi, Zuqiang Huang, Yanjuan Zhang, Aimin Huang, Mei Yang, Xingzhen Qin, Fang ShenAbstract:This study investigated the direct production of octenyl succinic anhydride modified starch (OSA-starch) by a non-Conventional mechanical activation (MA)-assisted solid phase synthesis (MASPS) Technology without the use of solvents and additives in a stirring ball mill. FTIR analysis confirmed that the OSA-starches with different degrees of substitution (DS) had been successfully produced by MASPS with different MA time, ascribing to the changes in structure and physicochemical properties induced by intense mechanical actions. XRD and SEM analyses showed that the crystal structure and morphology of starch were significantly disrupted after the process of MASPS. The OSA esterification of starch by MASPS resulted in the increase of cold-water solubility, transparency, and emulsion stabilization, and the reduction of paste viscosity and retrogradation, and these changes were enhanced with the increase of MA time. It indicated that the OSA-starch prepared by MASPS possessed some unusual functional properties, which can be favorable for special applications.