Lie Symmetry Analysis, Optimal Systems and Explicit Solutions of the Dispersive Long Wave Equations

In this paper, the dispersive long wave equation is studied by Lie symmetry group theory. Firstly, the Lie symmetries of this system are calculated. Secondly, one dimensional optimal systems of Lie algebra and all the symmetry reductions are obtained. Finally, based on the power series method and the extended Tanh function method, some new explicit solutions of this system are constructed.

Review of advanced progress ofχ^(2)-based all-optical devices on thin-film lithium niobate

The technological innovation of thin-film lithium niobate(TFLN)is supplanting the traditional lithium niobate industry and generating a vast array of ultra-compact and low-loss optical waveguide devices,providing an unprecedented prospect for chip-scale integrated optics.Because of its unique strong quadratic nonlinearity,TFLN is widely used to create new coherent light,which significantly promotes all-optical signal processes,especially in terms of speed.Herein,we review recent advances in TFLN,review the thorough optimization strategies of all-optical devices with unique characteristics based on TFLN,and discuss the challenges and perspectives of the developed nonlinear devices.

妊娠脂肪肝患者并发肺炎克雷伯菌血流感染治疗过程分析

妊娠期急性脂肪肝,是妊娠晚期特发性疾病,起病急而凶险,发病率低,但死亡率高。妊娠期急性脂肪肝伴多器官功能衰竭(MODS)并发重症感染,尤其是多重耐药病原菌引起的血行感染,治疗难度明显增大,生存几率可能更低,目前未见相关报道。本院治疗一例重症患者,31岁,孕37+5周,妊娠期急性脂肪肝伴MODS患者术后并发重症感染。血培养阳性,快速鉴定为产KPC酶肺炎克雷伯菌(CRKP)。结合联合药敏结果,使用亚胺培南西司他丁钠、替加环素、多粘菌素及磷霉素四联方案,成功治愈患者。针对妊娠期急性脂肪肝合并CRKP的血行感染的特点,快速鉴定并结合药敏结果,采用个体化、联合的抗菌药物治疗方案,成功救治患者。本例患者病情危重,在治疗过程中,需要临床医生、临床药师和微生物检验师协作,根据患者病理生理变化特点,共同讨论治疗方案,是本例患者救治成功的关键因素之一。