The Experts below are selected from a list of 610938 Experts worldwide ranked by ideXlab platform
Xuemei Ding - One of the best experts on this subject based on the ideXlab platform.
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a process level water conservation and pollution control performance evaluation tool of cleaner Production Technology in textile industry
Journal of Cleaner Production, 2017Co-Authors: Lizhu Chen, Xiongying Wu, Laili Wang, Xuemei DingAbstract:Abstract Industrial manufacturers are required to adopt water conservation and pollution control technologies because of increasingly serious water scarcity and water pollution, especially in textile industry. An effective performance evaluation tool for these technologies is greatly needed for textile manufacturers. However, the existing tools for textile industry can only evaluate on plant level and ignore pollution effect of water consumption. In order to help textile manufacturers know about water conservation and pollution control performance of technologies more systematically and comprehensively, we developed a process-level water conservation and pollution control performance evaluation tool of cleaner Production Technology in textile industry. The new tool includes three indicators: water withdrawal reduction, water consumption reduction and water assimilation reduction. Comparison between the new tool and old ones by evaluating the low-pollution-concentration effluent reuse Technology in a polyester flannel fabric dyeing and printing plant demonstrates that the new tool can help textile manufacturers to not only understand operation mechanism of a Technology on specific processes and then take specific improvement measures on different processes to optimize water conservation and pollution control performance, but also find out indiscoverable disadvantages of a Technology and then adopt complementary technologies to reduce negative effect of the Technology.
Xi Zhaoshou - One of the best experts on this subject based on the ideXlab platform.
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industrialization Production Technology for extracting plant pesticide from ginkgo testa
2013Co-Authors: Xue Feng, Zhang Jiaming, Peng Panying, Xue Xinjian, Xi ZhaoshouAbstract:The invention relates to an industrialization Production Technology for extracting plant pesticide from Ginkgo testa. The Technology is as below: grinding clean Ginkgo testa to a fine powder, adding water or 95% ethanol, stirring and soaking; and centrifuging the mixed solution after soaking, separating slag, pumping the filtrate into an concentrating pan, conducting vacuum fractionation, and collecting the component at 48-70 DEG C under vacuum degree of 0.08-0.09 Mpa to obtain the plant pesticide. The component contains ginkgolic acid, butyric acid and octanoic acid, which have antibacterial, bactericidal and pest control effects; and the plant pesticide obtained from vacuum fractionation has high utilization rate, good bactericidal and insecticidal effect, and is suitable for industrial Production.
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industrialization Production Technology for extracting bilobalide from ginkgo testa
2013Co-Authors: Xue Feng, Zhang Jiaming, Peng Panying, Xue Xinjian, Xi ZhaoshouAbstract:The invention relates to an industrialization Production Technology for extracting bilobalide from Ginkgo testa. The Technology comprises the following steps: leaching Ginkgo testa; separating, concentrating and fractionating leaching extracts; adjusting a pH value of the concentrated liquid; isolating a crude extract of ginkgolic acid; extracting a filtered mother liquor, conducting back extraction and adjusting the pH value; acidifying, concentrating, cooling and filtering to obtain a bilobalide crude product; dissolving the crude product with ethanol; and conducting column separation to obtain bilobalide with high purity. The invention employs ginkgolide acid solution to regulate the pH value of the solution containing bilobalide, and precipitates the bilobalide by a common ion effect. The Technology has the advantages of simple process, convenient operation, low cost, high extraction rate and high extraction purity, can rapidly extract bilobalide in large amount from Ginkgo testa, and is suitable for requirements of industrial Production.
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industrialization Production Technology for extracting ginkgolic acid and bilobalide from ginkgo testa
2013Co-Authors: Xue Feng, Zhang Jiaming, Peng Panying, Xue Xinjian, Xi ZhaoshouAbstract:The invention relates to an industrialization Production Technology for extracting ginkgolic acid and bilobalide from Ginkgo testa. The Technology comprises the following steps: leaching Ginkgo testa; separating, concentrating and fractionating leaching extracts; adjusting a pH value of the concentrated liquid; isolating a crude extract of ginkgolic acid; crystallizing, recrystallizing, and decolorizing by alkali liquor and acid precipitation, and further purifying the ginkgolic acid; conducting extraction and back extraction on a concentrated mother liquor, after adjusting a pH value; acidifying, concentrating, cooling and filtering to obtain a bilobalide crude product; and dissolving the crude product with ethanol and conducting column separation to obtain bilobalide with high purity. The invention employs acid solution to regulate the pH value of the solution containing ginkgolic acid or bilobalide, and precipitates the ginkgolic acid or bilobalide by a common ion effect. The Technology has the advantages of simple process, convenient operation, low cost, high extraction rate and high extraction purity, can rapidly extract ginkgolic acid and bilobalide in large amount from Ginkgo testa, and is suitable for requirements of industrial Production.
H M Rein - One of the best experts on this subject based on the ideXlab platform.
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a 19ghz vco downconverter mmic for 77ghz automotive radar frontends in a sige bipolar Production Technology
European Microwave Conference, 2007Co-Authors: Hanspeter Forstner, H M Rein, Herbert Knapp, C Gamsjager, J Bock, T F Meister, Klaus AufingerAbstract:A VCO based 19 GHz downconverter is presented, which is fully integrated in a 200 GHz fT SiGe Production Technology. The circuits, a voltage controlled oscillator ( VCO ), a buffer, a gilbert cell mixer and a prescaler have been designed fully differentially. The VCO is optimized for low phase noise. The oscillator operates at typically 19 GHz and is used to downconvert the by-4-divided signal of a 77 GHz fundamental oscillator. The conversion gain of the mixer is about -7 dB and the input referred 1 dB compression point is about +1 dBm. Phase noise of the VCO is -115 dBc/Hz at 1 MHz offset and power dissipation is 750 mW operating at a +5.5 V supply.
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wide band vcos in sige Production Technology operating up to about 70 ghz
IEEE Microwave and Wireless Components Letters, 2003Co-Authors: H M Rein, R E Makon, M SchwerdAbstract:Multipurpose VCOs with wide tuning range and oscillation frequencies up to 74 GHz (on wafer) and 69 GHz (mounted chip, with output buffer), respectively, have been fully integrated in a commercial SiGe Production Technology. To the best of the authors' knowledge these are record values for commercially available Si-based technologies, despite the moderate transistor f/sub T/ (62 GHz). The oscillation frequency can easily be dropped down to 41.5 GHz by cutting interconnection lines in the upper metallization layer. The phase noise obtained depends on the frequency range chosen and is sufficiently low for the intended applications.
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millimeter wave vcos with wide tuning range and low phase noise fully integrated in a sige bipolar Production Technology
IEEE Journal of Solid-state Circuits, 2003Co-Authors: Hao Li, H M ReinAbstract:Millimeter-wave voltage-controlled oscillators (VCOs) are presented which are fully integrated in a SiGe bipolar Production Technology. The low-cost differential circuits have been designed and optimized for low phase noise and wide tuning range. As an example, by varying the bias voltage of the on-chip varactor, the oscillation frequency can be changed from 36 to 46.9 GHz (i.e., by 26%). In this wide frequency range, phase noise between -107 and -110dBc/Hz at 1-MHz offset frequency and single-ended voltage swing of about 0.95V/sub pp/ /spl plusmn/10% (differential: 1.9V/sub pp/) were measured. The circuit consumes 280mW at -5.5-V supply voltage. The high oscillation frequency and low phase noise at wide tuning range are record values for fully integrated oscillators in Si-based technologies. The basic oscillator was then extended by a cascode stage as an output buffer. Now the VCO performance is no longer degraded if nonperfectly terminated transmission lines are driven. Thus, the chip can be mounted in a low-cost socket; however, at the cost of increased phase noise and power consumption.
Lizhu Chen - One of the best experts on this subject based on the ideXlab platform.
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a process level water conservation and pollution control performance evaluation tool of cleaner Production Technology in textile industry
Journal of Cleaner Production, 2017Co-Authors: Lizhu Chen, Xiongying Wu, Laili Wang, Xuemei DingAbstract:Abstract Industrial manufacturers are required to adopt water conservation and pollution control technologies because of increasingly serious water scarcity and water pollution, especially in textile industry. An effective performance evaluation tool for these technologies is greatly needed for textile manufacturers. However, the existing tools for textile industry can only evaluate on plant level and ignore pollution effect of water consumption. In order to help textile manufacturers know about water conservation and pollution control performance of technologies more systematically and comprehensively, we developed a process-level water conservation and pollution control performance evaluation tool of cleaner Production Technology in textile industry. The new tool includes three indicators: water withdrawal reduction, water consumption reduction and water assimilation reduction. Comparison between the new tool and old ones by evaluating the low-pollution-concentration effluent reuse Technology in a polyester flannel fabric dyeing and printing plant demonstrates that the new tool can help textile manufacturers to not only understand operation mechanism of a Technology on specific processes and then take specific improvement measures on different processes to optimize water conservation and pollution control performance, but also find out indiscoverable disadvantages of a Technology and then adopt complementary technologies to reduce negative effect of the Technology.
Xue Feng - One of the best experts on this subject based on the ideXlab platform.
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industrialization Production Technology for extracting plant pesticide from ginkgo testa
2013Co-Authors: Xue Feng, Zhang Jiaming, Peng Panying, Xue Xinjian, Xi ZhaoshouAbstract:The invention relates to an industrialization Production Technology for extracting plant pesticide from Ginkgo testa. The Technology is as below: grinding clean Ginkgo testa to a fine powder, adding water or 95% ethanol, stirring and soaking; and centrifuging the mixed solution after soaking, separating slag, pumping the filtrate into an concentrating pan, conducting vacuum fractionation, and collecting the component at 48-70 DEG C under vacuum degree of 0.08-0.09 Mpa to obtain the plant pesticide. The component contains ginkgolic acid, butyric acid and octanoic acid, which have antibacterial, bactericidal and pest control effects; and the plant pesticide obtained from vacuum fractionation has high utilization rate, good bactericidal and insecticidal effect, and is suitable for industrial Production.
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industrialization Production Technology for extracting bilobalide from ginkgo testa
2013Co-Authors: Xue Feng, Zhang Jiaming, Peng Panying, Xue Xinjian, Xi ZhaoshouAbstract:The invention relates to an industrialization Production Technology for extracting bilobalide from Ginkgo testa. The Technology comprises the following steps: leaching Ginkgo testa; separating, concentrating and fractionating leaching extracts; adjusting a pH value of the concentrated liquid; isolating a crude extract of ginkgolic acid; extracting a filtered mother liquor, conducting back extraction and adjusting the pH value; acidifying, concentrating, cooling and filtering to obtain a bilobalide crude product; dissolving the crude product with ethanol; and conducting column separation to obtain bilobalide with high purity. The invention employs ginkgolide acid solution to regulate the pH value of the solution containing bilobalide, and precipitates the bilobalide by a common ion effect. The Technology has the advantages of simple process, convenient operation, low cost, high extraction rate and high extraction purity, can rapidly extract bilobalide in large amount from Ginkgo testa, and is suitable for requirements of industrial Production.
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industrialization Production Technology for extracting ginkgolic acid and bilobalide from ginkgo testa
2013Co-Authors: Xue Feng, Zhang Jiaming, Peng Panying, Xue Xinjian, Xi ZhaoshouAbstract:The invention relates to an industrialization Production Technology for extracting ginkgolic acid and bilobalide from Ginkgo testa. The Technology comprises the following steps: leaching Ginkgo testa; separating, concentrating and fractionating leaching extracts; adjusting a pH value of the concentrated liquid; isolating a crude extract of ginkgolic acid; crystallizing, recrystallizing, and decolorizing by alkali liquor and acid precipitation, and further purifying the ginkgolic acid; conducting extraction and back extraction on a concentrated mother liquor, after adjusting a pH value; acidifying, concentrating, cooling and filtering to obtain a bilobalide crude product; and dissolving the crude product with ethanol and conducting column separation to obtain bilobalide with high purity. The invention employs acid solution to regulate the pH value of the solution containing ginkgolic acid or bilobalide, and precipitates the ginkgolic acid or bilobalide by a common ion effect. The Technology has the advantages of simple process, convenient operation, low cost, high extraction rate and high extraction purity, can rapidly extract ginkgolic acid and bilobalide in large amount from Ginkgo testa, and is suitable for requirements of industrial Production.
