强制进化随机游走算法(Random Walk Algorithm With Compulsive Evolution, RWCE)用于有分流换热网络优化时,由于变量维数的急剧增加,不仅严重影响优化效率,还降低算法的全局搜索能力。鉴于此,本文提出分流比差异优化策略,利用负分流比...强制进化随机游走算法(Random Walk Algorithm With Compulsive Evolution, RWCE)用于有分流换热网络优化时,由于变量维数的急剧增加,不仅严重影响优化效率,还降低算法的全局搜索能力。鉴于此,本文提出分流比差异优化策略,利用负分流比对换热网络结构产生扰动,同时降低已有换热单元分流比的优化频率。最后,通过10SP2算例分析策略对RWCE算法优化性能影响,经验证分流比差异优化策略能够增强换热网络的结构优化能力,并提高换热网络的优化质量。展开更多
‘Single shot'laser-ablation split-stream(SS-LASS)technique analyzing unpolished zircon grains makes their thin rims tenable for determination,which thus offers great potential in deciphering the timing of multipl...‘Single shot'laser-ablation split-stream(SS-LASS)technique analyzing unpolished zircon grains makes their thin rims tenable for determination,which thus offers great potential in deciphering the timing of multiple and short-lived episodes of anatexis and metamorphism in deeplysubducted continental crusts.Dominated granitic gneisses in the deeply subducted continental crust undergoing considerable fluid-melt activities persist multistage growth of zircon.Therefore,a comparative study of SS-LASS and laser ablation inductively coupled plasma mass spectrometer(LA-ICP-MS)zircon dating was conducted on the granitic gneisses from the Sulu belt in this study.Zircons mostly show a core-mantle-rim structure with CL-bright rims thinner than 5μm.For LA-ICP-MS dating,relict magmatic zircon cores yield protolith ages of ca.756-747 Ma;whereas the dark mantles record synexhumation anatexis at ca.214 Ma.By contrast,according to the U-Pb dates,trace element features,zircon crystallization temperatures and geological context,SS-LASS zircon petrochronology deciphers three episodes of anatectic events,as follows:(i)the first episode of anatexis at ca.218-217 Ma dominated by phengite-breakdown melting,likely facilitating the exhumation of the UHP slice from mantle depth;(ii)the second episode of anatexis at ca.193–191 Ma indicating part of northern Dabie-Sulu belt was still“hot”because of buried in the thickened orogenic crust at that time;(iii)the third episode of anatexis(ca.162–161 Ma)consistent with the intrusion ages(ca.161–141 Ma)of the Jurassic to Cretaceous granitoids in this orogen,suggesting the initial collapse of the orogenic root of the Sulu belt occurred at Late Jurassic due to the Izanagi plate initially subducting beneath the margin of Eastern Asia.This study sheds new light upon the utilization of SS-LASS petrochronology deciphering multiple anatectic events in the deeply-subducted continental crust and supports us in better understanding the tectonic evolution of Dabie-Sulu Orogen.展开更多
文摘强制进化随机游走算法(Random Walk Algorithm With Compulsive Evolution, RWCE)用于有分流换热网络优化时,由于变量维数的急剧增加,不仅严重影响优化效率,还降低算法的全局搜索能力。鉴于此,本文提出分流比差异优化策略,利用负分流比对换热网络结构产生扰动,同时降低已有换热单元分流比的优化频率。最后,通过10SP2算例分析策略对RWCE算法优化性能影响,经验证分流比差异优化策略能够增强换热网络的结构优化能力,并提高换热网络的优化质量。
基金supported by National Natural Science Foundation of China(Nos.42072228,42102060,41902036,41572182)China Postdoctoral Science Foundation(No.2021M692983)+4 种基金the Chinese Ministry of Education(No.BP0719022)the Most Special Fund(Nos.MSFGPMR02-3,MSFGPMR30)Open funds from the State Key Laboratory of Geological Processes and Mineral ResourcesChina University of Geosciences(Nos.GPMR201703,GPMR201704 and GPMR201903)the Fundamental Research Funds for National University(No.CUG-G1323511572)。
文摘‘Single shot'laser-ablation split-stream(SS-LASS)technique analyzing unpolished zircon grains makes their thin rims tenable for determination,which thus offers great potential in deciphering the timing of multiple and short-lived episodes of anatexis and metamorphism in deeplysubducted continental crusts.Dominated granitic gneisses in the deeply subducted continental crust undergoing considerable fluid-melt activities persist multistage growth of zircon.Therefore,a comparative study of SS-LASS and laser ablation inductively coupled plasma mass spectrometer(LA-ICP-MS)zircon dating was conducted on the granitic gneisses from the Sulu belt in this study.Zircons mostly show a core-mantle-rim structure with CL-bright rims thinner than 5μm.For LA-ICP-MS dating,relict magmatic zircon cores yield protolith ages of ca.756-747 Ma;whereas the dark mantles record synexhumation anatexis at ca.214 Ma.By contrast,according to the U-Pb dates,trace element features,zircon crystallization temperatures and geological context,SS-LASS zircon petrochronology deciphers three episodes of anatectic events,as follows:(i)the first episode of anatexis at ca.218-217 Ma dominated by phengite-breakdown melting,likely facilitating the exhumation of the UHP slice from mantle depth;(ii)the second episode of anatexis at ca.193–191 Ma indicating part of northern Dabie-Sulu belt was still“hot”because of buried in the thickened orogenic crust at that time;(iii)the third episode of anatexis(ca.162–161 Ma)consistent with the intrusion ages(ca.161–141 Ma)of the Jurassic to Cretaceous granitoids in this orogen,suggesting the initial collapse of the orogenic root of the Sulu belt occurred at Late Jurassic due to the Izanagi plate initially subducting beneath the margin of Eastern Asia.This study sheds new light upon the utilization of SS-LASS petrochronology deciphering multiple anatectic events in the deeply-subducted continental crust and supports us in better understanding the tectonic evolution of Dabie-Sulu Orogen.
