InAs/GaSb type-II superlattce (T2SL) photodetector structures at the MWIR regime were grown by molecular beam epitaxy. The growth temperature and group-V soaking times were optimized with respect to interface and tran...InAs/GaSb type-II superlattce (T2SL) photodetector structures at the MWIR regime were grown by molecular beam epitaxy. The growth temperature and group-V soaking times were optimized with respect to interface and transport quality. Novel strain compensation schemes with insertion of InSb layers were proposed and tested to be efficient to tune the overall strain between tensile and compressive without degradation of interface and optical quality. The effect of the proposed methods is modeled by analytic functions.? Band structure calculations were also carried out for the proposed T2SL structures to assist optimizing sample designs. Single pixel photodiodes with a low dark current were demonstrated.展开更多
The effects of strain rate on the dislocation type and dislocation configure of TA15 alloy were investigated.The experimental results show that the operating dislocation type changes from c type to c and a＋ c type wi...The effects of strain rate on the dislocation type and dislocation configure of TA15 alloy were investigated.The experimental results show that the operating dislocation type changes from c type to c and a＋ c type with increasing strain rate under the deformation condition of 900℃,60% strain.Under the condition of 900℃,60% strain and 0.001/s strain rate,lots of orientate dislocation cellular configurations and sub-grains,many dislocations pile up before sub boundary.When the strain rate increases to 0.1/s,some dislocations exhibit curved and dislocation tangles and pile-ups can be found,suggesting more dislocations and much stronger interactions among dislocations.展开更多
链霉菌种类繁多,以盛产抗生素而闻名,是极具研发价值的放线菌类群。然而,商业数据库中收录的链霉菌属菌种数量较少,这限制了基质辅助激光解吸电离飞行时间质谱(matrix-assisted laser desorption/ionization-time of flight mass spectr...链霉菌种类繁多,以盛产抗生素而闻名,是极具研发价值的放线菌类群。然而,商业数据库中收录的链霉菌属菌种数量较少,这限制了基质辅助激光解吸电离飞行时间质谱(matrix-assisted laser desorption/ionization-time of flight mass spectrometry,MALDI-TOF MS)技术在链霉菌鉴定中的应用。【目的】基于全基因组测序数据挖掘,建立链霉菌属菌种的MALDI-TOF MS数据库,并测试其准确性。【方法】检索基因组数据库,提取已测序的链霉菌属菌种模式菌株的12种核糖体蛋白序列,并计算其理论MALDI质谱峰值,以这12个峰值的组合作为菌种鉴定依据建立数据库。收集模式菌株进行MALDI-TOF MS测试,将实测峰值与数据库中菌种的理论峰值进行比对,以测试建库方法及数据库比对结果的准确性。【结果】建立了包含链霉菌属615个菌种的MALDI-TOF MS数据库。测试菌株的质谱均实现了与数据库中目标菌种的准确匹配。本研究还提出了基于数据库比对的菌种鉴定方法。【结论】本研究建立的数据库为基于MALDI-TOF MS技术鉴定链霉菌奠定了基础。展开更多
1)Bifidobacterium longum subsp.iuvenis(Modesto et al.IJSEM.2023,73:6013;Type strain:NCC 5000 T=CCOS 2034 T=LMG 32752^(T))Etymology:iu’ve.nis.L.gen.masc./fem.n.iuvenis,of child,because the type strain was isolated fro...1)Bifidobacterium longum subsp.iuvenis(Modesto et al.IJSEM.2023,73:6013;Type strain:NCC 5000 T=CCOS 2034 T=LMG 32752^(T))Etymology:iu’ve.nis.L.gen.masc./fem.n.iuvenis,of child,because the type strain was isolated from a 2 year old Bangladeshi child.长双歧杆菌幼儿亚种.展开更多
文摘InAs/GaSb type-II superlattce (T2SL) photodetector structures at the MWIR regime were grown by molecular beam epitaxy. The growth temperature and group-V soaking times were optimized with respect to interface and transport quality. Novel strain compensation schemes with insertion of InSb layers were proposed and tested to be efficient to tune the overall strain between tensile and compressive without degradation of interface and optical quality. The effect of the proposed methods is modeled by analytic functions.? Band structure calculations were also carried out for the proposed T2SL structures to assist optimizing sample designs. Single pixel photodiodes with a low dark current were demonstrated.
文摘The effects of strain rate on the dislocation type and dislocation configure of TA15 alloy were investigated.The experimental results show that the operating dislocation type changes from c type to c and a＋ c type with increasing strain rate under the deformation condition of 900℃,60% strain.Under the condition of 900℃,60% strain and 0.001/s strain rate,lots of orientate dislocation cellular configurations and sub-grains,many dislocations pile up before sub boundary.When the strain rate increases to 0.1/s,some dislocations exhibit curved and dislocation tangles and pile-ups can be found,suggesting more dislocations and much stronger interactions among dislocations.
文摘1)Bifidobacterium longum subsp.iuvenis(Modesto et al.IJSEM.2023,73:6013;Type strain:NCC 5000 T=CCOS 2034 T=LMG 32752^(T))Etymology:iu’ve.nis.L.gen.masc./fem.n.iuvenis,of child,because the type strain was isolated from a 2 year old Bangladeshi child.长双歧杆菌幼儿亚种.
