The property IR was introduced by Friis and Rordam in 1996.They proved that any pair of almost commuting self-adjoint elements is norm close to a pair of exactly commuting self-adjoint elements in any C^(*)-algebras w...The property IR was introduced by Friis and Rordam in 1996.They proved that any pair of almost commuting self-adjoint elements is norm close to a pair of exactly commuting self-adjoint elements in any C^(*)-algebras with the property IR.In this paper,we will prove some permanence results for IR-algebras,approximate IR-algebras and local IR-algebras.Finally,we will also show that any pair of almost commuting self-adjoint elements is norm close to a pair of exactly commuting self-adjoint elements in any local IR-algebra.展开更多
Traumatic axonal lesions of peripheral nerves disrupt neuronal connections with their targets,resulting in the loss of motor and sensory functions.Despite the peripheral nervous system’s capacity for axonal regrowth,...Traumatic axonal lesions of peripheral nerves disrupt neuronal connections with their targets,resulting in the loss of motor and sensory functions.Despite the peripheral nervous system’s capacity for axonal regrowth,this may lead to permanent impairements resulting in a loss of quality of life and a high socioeconomic burden.展开更多
目的观察生物陶瓷材料iRoot BP Plus用于成熟恒牙不可复性牙髓炎活髓切除术的疗效。方法选择2022年3月至2024年3月西安交通大学口腔医院收治的成熟恒牙不可复性牙髓炎患者100例(100颗患牙)为研究对象,按照简单随机法分为对照组和试验组...目的观察生物陶瓷材料iRoot BP Plus用于成熟恒牙不可复性牙髓炎活髓切除术的疗效。方法选择2022年3月至2024年3月西安交通大学口腔医院收治的成熟恒牙不可复性牙髓炎患者100例(100颗患牙)为研究对象,按照简单随机法分为对照组和试验组,每组50例(各50颗患牙)。对照组使用三氧化矿物凝聚体(MTA)盖髓剂行活髓切除术,试验组使用生物陶瓷材料iRoot BP Plus盖髓剂行活髓切除术。比较两组患者疼痛程度、临床疗效、影像学疗效及牙齿变色率。结果术后第1天和第7天,两组患者视觉模拟评分法(VAS)评分均较术前降低(P<0.05),术后第7天较术后第1天下降(P<0.05),且术后第1天和第7天试验组VAS评分低于对照组同期(P<0.05)。术后3、6、12个月,试验组临床成功率分别为96.00%、94.00%、94.00%,对照组分别为94.00%、92.00%、90.00%,两组比较,差异均无统计学意义(P>0.05)。术后3、6、12个月,试验组影像学成功率分别为96.00%、92.00%、92.00%,对照组分别为92.00%、90.00%、90.00%,两组比较,差异均无统计学意义(P>0.05)。术后12个月,试验组牙齿变色率为2.00%(1/50),低于对照组的46.00%(23/50)(χ^(2)=26.535,P<0.05)。结论在成熟恒牙不可复性牙髓炎的活髓切除术中,使用生物陶瓷材料iRoot BP Plus的短期和长期疗效与MTA相当,但在减轻术后疼痛和避免牙齿变色方面更具优势。展开更多
In this paper, a nonautonomous predator-prey system based on a modified version of the Leslie-Gower scheme and Holling-type II scheme with delayed effect is investigated. The general criteria of integrable form on the...In this paper, a nonautonomous predator-prey system based on a modified version of the Leslie-Gower scheme and Holling-type II scheme with delayed effect is investigated. The general criteria of integrable form on the permanence are established. By constructing suitable Lyapunov functionals, a set of easily verifiable sufficient conditions are derived for global stability of any positive solutions to the展开更多
基金Supported by NSFC(No.11401256)Scientific Research Fund of Zhejiang Provincial Education Department(No.Y202249575)Zhejiang Provincial NSF(No.LQ13A010016).
文摘The property IR was introduced by Friis and Rordam in 1996.They proved that any pair of almost commuting self-adjoint elements is norm close to a pair of exactly commuting self-adjoint elements in any C^(*)-algebras with the property IR.In this paper,we will prove some permanence results for IR-algebras,approximate IR-algebras and local IR-algebras.Finally,we will also show that any pair of almost commuting self-adjoint elements is norm close to a pair of exactly commuting self-adjoint elements in any local IR-algebra.
文摘Traumatic axonal lesions of peripheral nerves disrupt neuronal connections with their targets,resulting in the loss of motor and sensory functions.Despite the peripheral nervous system’s capacity for axonal regrowth,this may lead to permanent impairements resulting in a loss of quality of life and a high socioeconomic burden.
文摘目的观察生物陶瓷材料iRoot BP Plus用于成熟恒牙不可复性牙髓炎活髓切除术的疗效。方法选择2022年3月至2024年3月西安交通大学口腔医院收治的成熟恒牙不可复性牙髓炎患者100例(100颗患牙)为研究对象,按照简单随机法分为对照组和试验组,每组50例(各50颗患牙)。对照组使用三氧化矿物凝聚体(MTA)盖髓剂行活髓切除术,试验组使用生物陶瓷材料iRoot BP Plus盖髓剂行活髓切除术。比较两组患者疼痛程度、临床疗效、影像学疗效及牙齿变色率。结果术后第1天和第7天,两组患者视觉模拟评分法(VAS)评分均较术前降低(P<0.05),术后第7天较术后第1天下降(P<0.05),且术后第1天和第7天试验组VAS评分低于对照组同期(P<0.05)。术后3、6、12个月,试验组临床成功率分别为96.00%、94.00%、94.00%,对照组分别为94.00%、92.00%、90.00%,两组比较,差异均无统计学意义(P>0.05)。术后3、6、12个月,试验组影像学成功率分别为96.00%、92.00%、92.00%,对照组分别为92.00%、90.00%、90.00%,两组比较,差异均无统计学意义(P>0.05)。术后12个月,试验组牙齿变色率为2.00%(1/50),低于对照组的46.00%(23/50)(χ^(2)=26.535,P<0.05)。结论在成熟恒牙不可复性牙髓炎的活髓切除术中,使用生物陶瓷材料iRoot BP Plus的短期和长期疗效与MTA相当,但在减轻术后疼痛和避免牙齿变色方面更具优势。
文摘In this paper, a nonautonomous predator-prey system based on a modified version of the Leslie-Gower scheme and Holling-type II scheme with delayed effect is investigated. The general criteria of integrable form on the permanence are established. By constructing suitable Lyapunov functionals, a set of easily verifiable sufficient conditions are derived for global stability of any positive solutions to the
