The catalytic combustion of low concentration methane was systematically investigated in a pilot scale reverse flow reactor.The influences of cyclic period,the concentration of reactant and the space velocity on the o...The catalytic combustion of low concentration methane was systematically investigated in a pilot scale reverse flow reactor.The influences of cyclic period,the concentration of reactant and the space velocity on the operation performance of reactor were studied.The experimental results showed that,for the reverse flow reactor,cyclic period,the concentration of reactant and the space velocity were three important operation parameters that obviously affected the axial temperature profiles of reactor.It′s possible to maintain autothermal operation with high conversion of methane even though the methane concentration decreased to 0.5%.When the methane concentration was increased up to 0.8%,the highest temperature of catalyst bed was beyond 700 ℃.It suggests that the energy of the hot gas should be recovered and this reactive technology is able to be used in power production with low concentration methane.展开更多
乳腺癌相关淋巴水肿（Breast cancer related lymphedema,BCRL）是乳腺癌术后最常见的慢性并发症之一,常引起肿胀、疼痛等不适感,且可能发生在乳腺癌术后任何阶段[1]。淋巴水肿会增加上肢感染的风险,引起上肢功能障碍,患者还会因为乳房...乳腺癌相关淋巴水肿（Breast cancer related lymphedema,BCRL）是乳腺癌术后最常见的慢性并发症之一,常引起肿胀、疼痛等不适感,且可能发生在乳腺癌术后任何阶段[1]。淋巴水肿会增加上肢感染的风险,引起上肢功能障碍,患者还会因为乳房切除而引起自尊感降低及焦虑等心理问题[2]。生理及心理上的不适继而会导致患者总体生存质量下降[1]。展开更多
文摘The catalytic combustion of low concentration methane was systematically investigated in a pilot scale reverse flow reactor.The influences of cyclic period,the concentration of reactant and the space velocity on the operation performance of reactor were studied.The experimental results showed that,for the reverse flow reactor,cyclic period,the concentration of reactant and the space velocity were three important operation parameters that obviously affected the axial temperature profiles of reactor.It′s possible to maintain autothermal operation with high conversion of methane even though the methane concentration decreased to 0.5%.When the methane concentration was increased up to 0.8%,the highest temperature of catalyst bed was beyond 700 ℃.It suggests that the energy of the hot gas should be recovered and this reactive technology is able to be used in power production with low concentration methane.
文摘乳腺癌相关淋巴水肿（Breast cancer related lymphedema,BCRL）是乳腺癌术后最常见的慢性并发症之一,常引起肿胀、疼痛等不适感,且可能发生在乳腺癌术后任何阶段[1]。淋巴水肿会增加上肢感染的风险,引起上肢功能障碍,患者还会因为乳房切除而引起自尊感降低及焦虑等心理问题[2]。生理及心理上的不适继而会导致患者总体生存质量下降[1]。
