With an extended Su–Schrieffer–Heeger model and Green's function method, the spin–orbit coupling(SOC) effects on spin admixture of electronic states and quantum transport in organic devices are investigated. Th...With an extended Su–Schrieffer–Heeger model and Green's function method, the spin–orbit coupling(SOC) effects on spin admixture of electronic states and quantum transport in organic devices are investigated. The role of lattice distortion induced by the strong electron–lattice interaction in organics is clarified in contrast with a uniform chain. The results demonstrate an enhanced SOC effect on the spin admixture of frontier eigenstates by the lattice distortion at a larger SOC,which is explained by the perturbation theory. The quantum transport under the SOC is calculated for both nonmagnetic and ferromagnetic electrodes. A more notable SOC effect on total transmission and current is observed for ferromagnetic electrodes, where spin filtering induced by spin-flipped transmission and suppression of magnetoresistance are obtained.Unlike the spin admixture, a stronger SOC effect on transmission exists for the uniform chain rather than the organic lattices with distortion. The reason is attributed to the modified spin-polarized conducting states in the electrodes by lattice configuration, and hence the spin-flip transmission, instead of the spin admixture of eigenstates. This work is helpful to understand the SOC effect in organic spin valves in the presence of lattice distortion.展开更多
目的研究剖宫产术前口服碳水化合物饮料对产妇及新生儿的影响,探讨碳水化合物饮料在剖宫产术前的应用价值。方法回顾性分析2020年6月—2021年6月复旦大学附属妇产科医院206例单胎剖宫产产妇的临床资料,根据剖宫产术前是否口服碳水化合...目的研究剖宫产术前口服碳水化合物饮料对产妇及新生儿的影响,探讨碳水化合物饮料在剖宫产术前的应用价值。方法回顾性分析2020年6月—2021年6月复旦大学附属妇产科医院206例单胎剖宫产产妇的临床资料,根据剖宫产术前是否口服碳水化合物饮料分为加速产后康复(enhanced recovery after delivery,ERAD)组及对照组,探究术前口服碳水化合物饮料对产妇术前补液、术后康复及新生儿的影响。结果在禁食<12 h的患者中,ERAD组较对照组补液率更低,平均补液量更少(P<0.05);ERAD组术后排气药物使用率更低(P<0.05);在无腹部手术史的产妇中,ERAD组术后24 h出血量更少(P<0.05);两组术后发热率、恶心呕吐发生率、排气时间、新生儿Apgar评分、出室血糖及新生儿重症监护室(neonatal intensive care unit,NICU)收治率等差异无统计学意义。有低血糖高危因素的新生儿中,ERAD组新生儿入观察室血糖较对照组更低,新生儿低血糖发生率更高(P<0.05)。结论剖宫产术前口服碳水化合物饮料可能有利于减少择期剖宫产产妇术前补液、术后胃肠道功能恢复及减少剖宫产术后出血,但可能与新生儿低血糖发生有关。展开更多
患儿男,1日龄,第3胎第2产,双胎之大,胎龄34周+1,剖宫产,1 min Apgar评分为9分,5 min Apgar评分为10分,10 min Apgar评分为10分,出生体重1920 g,出生身长43 cm,脐带、胎盘、羊水均正常。生后因"血常规检查发现血小板减少"入院...患儿男,1日龄,第3胎第2产,双胎之大,胎龄34周+1,剖宫产,1 min Apgar评分为9分,5 min Apgar评分为10分,10 min Apgar评分为10分,出生体重1920 g,出生身长43 cm,脐带、胎盘、羊水均正常。生后因"血常规检查发现血小板减少"入院。尚未接种疫苗。父母非近亲结婚,父亲和哥哥既往诊断为原发性免疫性血小板减少症。展开更多
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11974215,21933002,and 12274264)。
文摘With an extended Su–Schrieffer–Heeger model and Green's function method, the spin–orbit coupling(SOC) effects on spin admixture of electronic states and quantum transport in organic devices are investigated. The role of lattice distortion induced by the strong electron–lattice interaction in organics is clarified in contrast with a uniform chain. The results demonstrate an enhanced SOC effect on the spin admixture of frontier eigenstates by the lattice distortion at a larger SOC,which is explained by the perturbation theory. The quantum transport under the SOC is calculated for both nonmagnetic and ferromagnetic electrodes. A more notable SOC effect on total transmission and current is observed for ferromagnetic electrodes, where spin filtering induced by spin-flipped transmission and suppression of magnetoresistance are obtained.Unlike the spin admixture, a stronger SOC effect on transmission exists for the uniform chain rather than the organic lattices with distortion. The reason is attributed to the modified spin-polarized conducting states in the electrodes by lattice configuration, and hence the spin-flip transmission, instead of the spin admixture of eigenstates. This work is helpful to understand the SOC effect in organic spin valves in the presence of lattice distortion.
文摘目的研究剖宫产术前口服碳水化合物饮料对产妇及新生儿的影响,探讨碳水化合物饮料在剖宫产术前的应用价值。方法回顾性分析2020年6月—2021年6月复旦大学附属妇产科医院206例单胎剖宫产产妇的临床资料,根据剖宫产术前是否口服碳水化合物饮料分为加速产后康复(enhanced recovery after delivery,ERAD)组及对照组,探究术前口服碳水化合物饮料对产妇术前补液、术后康复及新生儿的影响。结果在禁食<12 h的患者中,ERAD组较对照组补液率更低,平均补液量更少(P<0.05);ERAD组术后排气药物使用率更低(P<0.05);在无腹部手术史的产妇中,ERAD组术后24 h出血量更少(P<0.05);两组术后发热率、恶心呕吐发生率、排气时间、新生儿Apgar评分、出室血糖及新生儿重症监护室(neonatal intensive care unit,NICU)收治率等差异无统计学意义。有低血糖高危因素的新生儿中,ERAD组新生儿入观察室血糖较对照组更低,新生儿低血糖发生率更高(P<0.05)。结论剖宫产术前口服碳水化合物饮料可能有利于减少择期剖宫产产妇术前补液、术后胃肠道功能恢复及减少剖宫产术后出血,但可能与新生儿低血糖发生有关。
文摘患儿男,1日龄,第3胎第2产,双胎之大,胎龄34周+1,剖宫产,1 min Apgar评分为9分,5 min Apgar评分为10分,10 min Apgar评分为10分,出生体重1920 g,出生身长43 cm,脐带、胎盘、羊水均正常。生后因"血常规检查发现血小板减少"入院。尚未接种疫苗。父母非近亲结婚,父亲和哥哥既往诊断为原发性免疫性血小板减少症。
