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Role of relaxin in diastasis of the pubic symphysis peripartum

World Journal of Clinical Cases 2021年第1期9卷 91-101页

作者： Yan Wang Yong-Qiang Li mei-rong Tian Nan Wang Zun-Cheng Zheng Rehabilitation Medicine Taian City Central HospitalTaian 271000Shandong ProvinceChina Department of Otolaryngology Taian City Central HospitalTaian 271000Shandong ProvinceChina Department of Obstetrics Taian City Central HospitalTaian 271000Shandong ProvinceChina Rehabilitation Centre Qingdao Fuwai Cardiovascular HospitalQingdao 266034Shandong ProvinceChina Department of Rehabilitation Taian City Central HospitalTaian 271000Shandong ProvinceChina

BACKGROUND Separation of the pubic symphysis can occur during the peripartum ***(RLX)is a hormone primarily secreted by the corpus luteum that can mediate hemodynamic changes during pregnancy as well as loosen the pelvic ***,it is unknown whether RLX is associated with peripartum pubic symphysis separation and if the association is affected by other *** To study the association between RLX and peripartum pubic symphysis separation and evaluate other factors that might affect this *** We performed a cross-sectional study of pregnant women between April 2019 and January *** demographic characteristics,including gestational age,weight,neonatal weight,delivery mode and duration of the first and second stages of labor,were *** clinical symptoms were used as a screening index during pregnancy,and the patients with pubic symphysis and inguinal pain were examined by color Doppler ultrasonography to determine whether there was pubic symphysis *** RLX concentrations were evaluated 1 d after delivery using an enzyme-linked immunosorbent assay,and pubic symphysis separation was diagnosed based on postpartum X-ray *** used an independent-sample t test to analyze the association between serum RLX levels and peripartum pubic symphysis *** regression analysis was used to evaluate whether the association between RLX and peripartum pubic symphysis separation was confounded by other factors,and the association between RLX and the severity of pubic symphysis separation was also *** used Pearson correlation analysis to determine the factors related to RLX levels as well as the correlation between the degree of pubic symphysis separation and activities of daily living(ADL)and *** A total of 54 women were enrolled in the study,with 15 exhibiting(observational group)and 39 not exhibiting(control group)peripartum pubic symphysis *** were no statistica

关键词： Pregnancy Pubic symphysis separation Relaxin Neonatal weight Crosssectional study Activities of daily living

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Improved photoelectrochemical performance by forming a ZnO/ZnS core/shell nanorod array

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Optoelectronics Letters 2019年第4期15卷 241-244页

作者： SUI mei-rong GU Xiu-quan SHI mei-lin WANG Yong LIU Lin-lin School of Medical Imaging Xuzhou Medical University Xuzhou 221004 China School of Materials Science and Engineering China University of Mining and Technology Xuzhou 221116 China

ZnO nanorod arrays(NRAs) were prepared via a facile hydrothermal method for photoelectrochemical(PEC) ***, ZnS thin shell layers were deposited onto them via a facile hydrothermal treatment process for constructing a ZnO/ZnS core/shell structure. It was demonstrated that the PEC activity of a ZnO NRA is enhanced significantly after the surface modification, although there weren’t any obvious changes in the visible-light harvesting *** the Nyquist and Mott-Schottky(M-S) plots were employed to reveal the reason, which was attributed to higher electrocatalytic activity of ZnS than that of ZnO and the resulting higher charge transfer efficiency across the solid/liquid interfaces. Finally, a schematic band model was proposed for clarifying the charge carrier transfer mechanism occurred at the interfaces.

关键词： ZnO nanorod arrays(NRAs) photoelectrochemical(PEC) hydrothermal method

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森林环境下的无人直升机安全飞行控制

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上海交通大学学报 2020年第9期54卷 994-999页

作者：梅蓉南京森林警察学院侦查学院南京210023

针对森林环境下受扰无人直升机的高度和姿态约束控制问题,提出了一种安全跟踪滑模飞行控制方法.为了使无人直升机躲避树木高度威胁并保持期望的飞行姿态,考虑无人直升机的高度和姿态约束,利用误差性能转换函数方法对约束进行处理.基于... 详细信息

针对森林环境下受扰无人直升机的高度和姿态约束控制问题,提出了一种安全跟踪滑模飞行控制方法.为了使无人直升机躲避树木高度威胁并保持期望的飞行姿态,考虑无人直升机的高度和姿态约束,利用误差性能转换函数方法对约束进行处理.基于回馈递推方法和滑模控制方法设计了无人直升机的鲁棒跟踪控制方法,并采用李雅普诺夫稳定性分析方法证明了所有闭环系统信号的收敛性.仿真结果验证了所设计安全滑模飞行控制方法的有效性.

关键词：无人直升机安全控制回馈递推控制滑模控制

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Effect of interface anisotropy on tilted growth of eutectics:A phase field study

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Chinese Physics B 2022年第10期31卷 563-571页

作者： mei-rong Jiang Jun-Jie Li Zhi-Jun Wang Jin-Cheng Wang State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China

Interfacial energy anisotropy plays an important role in tilted growth of eutectics. However, previous studies mainly focused on the solid-solid interface energy anisotropy, and whether the solid-liquid interface energy anisotropy can significantly affect the tilted growth of eutectics still remains unclear. In this study, a multi-phase field model is employed to investigate both the effect of solid-liquid interfacial energy anisotropy and the effect of solid-solid interfacial energy anisotropy on tilted growth of eutectics. The findings reveal that both the solid-liquid interfacial energy anisotropy and the solid-solid interfacial energy anisotropy can induce the tilted growth of eutectics. The results also demonstrate that when the rotation angle is within a range of 30°-60°, the growth of tilted eutectics is governed jointly by the solid-solid interfacial energy anisotropy and the solid-liquid interfacial energy anisotropy;otherwise, it is mainly controlled by the solid-solid interfacial energy anisotropy. Further analysis shows that the unequal pinning angle at triple point caused by the adjustment of the force balance results in different solute-diffusion rates on both sides of triple point. This will further induce an asymmetrical concentration distribution along the pulling direction near the solid-liquid interface and the tilted growth of eutectics. Our findings not only shed light on the formation mechanism of tilted eutectics but also provide theoretical guidance for controlling the microstructure evolution during eutectic solidification.

关键词： tilted eutectics interfacial energy anisotropy multi-phase field model

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Coupled-channels optical calculation of positron hydrogen resonances

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Chinese Physics B 2012年第1期21卷 177-182页

作者： Yu rong-mei Zhou Ya-Jun Jiao Li-Guang Cheng Yong-Jun The Academy of Fundamental and Interdisciplinary Sciences Harbin Institute of TechnologyHarbin 150081China

An application of the coupled-channels optical method is given for the energy-dependent phenomena of positron- hydrogen resonances below the n = 2 excitation threshold. The equivalent local optical potential is used to account for the target polarization and positronium formation. The calculation includes 9 explicitly physical coupled channels. The lowest S-wave resonance energy position and new resonances are found. Angular dependence of the cross section in the resonance region are investigated.

关键词： positron hydrogen resonance

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Protective effects of naringenin eye drops on N-methylN-nitrosourea-induced photoreceptor cell death in rats

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International Journal of Ophthalmology(English edition) 2014年第3期7卷 391-396页

作者： Jun-Li Lin Yan-Dong Wang Yan Ma Chun-mei Zhong mei-rong Zhu Wen-Pei Chen Bao-Qin Lin School of Chinese Materia Medica Guangzhou University of Chinese Medicine Zhongshan Ophthalmic Center Sun Yat-Sen University Zhuhai United Laboratories Co. Ltd

AIM:To investigate the effects of naringenin eye drops on N-methyl-N-nitrosourea (MNU)-induced photoreceptor cell death in ***:Photoreceptor cell death was induced by single intraperitoneal injection of MNU(60 mg/kg)in *** eyes of all animals were instilled with one drop of vehicle,0.5% or 1.0% naringenin eye drops three times per day from 7d before to 17d after MNU *** of naringenin on MNU-induced photoreceptor cell death were evaluated by electrophysiological and histological ***:Flash electroretinography (FERG)and oscillatory potentials (OPs) recordings showed that the vehicle control group had remarkable reduction of amplitudes and prolongation of latency *** and OPs responses were significantly reversed in MNUinduced rats treated with 0.5%or 1.0% naringenin eye drops compared with the vehicle *** retinal morphological results showed that naringenin dosedependently preserved the outer nuclear layer,outer retina and total ***:These results indicate that topical treatment with naringenin eye drops prevented retinal neurons from MNU-induced structural and functional damages.

关键词： naringenin N-methyl-N-nitrosourea photoreceptor cell death retinitis pigmentosa

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Thalidomide combined with endoscopy in the treatment of Cronkhite-Canada syndrome:A case report

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World Journal of Clinical Cases 2022年第28期10卷 10366-10374页

作者： Jia-mei rong Meng-Lin Shi Jun-Kun Niu Juan Luo Ying-Lei Miao Department of Gastroenterology The First Affiliated Hospital of Kunming Medical UniversityKunming 650032Yunnan ProvinceChina

BACKGROUND Cronkhite-Canada syndrome(CCS)is a rare non-hereditary disease with a poor prognosis and a mortality rate of up to 55%.Currently,there is no standard treatment for *** department of gastroenterology of our hospital admitted a patient with CCS whose symptoms improved significantly after treatment with thalidomide combined with endoscopy,and there was no obvious adverse reaction during the 2-year *** SUMMARY A 47-year-old Chinese man presented with diarrhea for more than 4 mo,accompanied by loss of taste,fatigue,and weight *** examination demonstrated that the patient’s skin and hands were hyperpigmented,the front edges of the nails of both hands were notably thickened and yellow,and the nails were partially *** endoscopy identified a diffuse polypoid bulge,and the patient bore an albumin level of 27.3 g/*** level of the calcium correction amount was(2.164 m M)which allowed for a comprehensive diagnosis of Cronkhite-Canada syndrome,combined with hypoalbuminemia and *** of 150 mg per day was administered to regulate immunity,and the symptoms were relieved after 1 *** the follow-up period,polyps were still found that had not been resolved by thalidomide treatment,and endoscopic therapy was *** resulted in further improvement of his condition and no particular discomfort during the 2 years of *** The patient’s symptoms were significantly relieved by thalidomide 2 years after treatment,proposing it as a potential treatment for CCS.

关键词： Cronkhite-Canada syndrome Diarrhea Polyp Thalidomide Endoscopic therapy Case report

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Complications and outcomes of descemet stripping automated endothelial keratoplasty with artisan aphakia intraocular lens implantation

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International Journal of Ophthalmology(English edition) 2018年第4期11卷 607-611页

作者： rong-mei Peng Yu-Xin Guo Yuan Qiu Yan-Sheng Hao Jing Hong Department of Ophthalmology Peking University Third Hospital

AIM： To evaluate the complications and outcomes of descemet stripping automated endothelial keratoplasty（DSAEK） combined with artisan aphakia intraocular lens（IOL） implantation in severely damaged eyes without capsular ***： DSAEK combined with artisan iris claw IOL implantation was performed on 29 eyes. All eyes were of abnormal structure due to complications from prior intraocular surgeries and ocular trauma. Ocular complications observed included graft dislocations, high intraocular pressure（IOP）, IOL dislocations, macular edema and hyphema. Best corrected visual acuity（BCVA）, IOP and mean central endothelial cell density（ECD） were ***： Thirteen eyes had a history of ocular trauma, 10 eyes had an anterior chamber IOL, 16 eyes had prior vitrectomy. The iris was abnormal in 22 cases. Graft dislocation occurred in 5（17.2%） of 29 eyes. IOL dislocation occurred in 2 eyes（6.9%）. High IOP was found in 9 eyes and was controlled with treatment. The preoperative mean BCVA was 20/286. The 6 mo postoperative mean BCVA was 20/42. The average center ECD was 1965.3 cells/mm^2 at 6 mo, and the rate of the donor cell loss was 34.7%.CONCLUSION： DSAEK combined with artisan aphakia IOL implantation is an alternative option for resolving endothelial and lens disorders in aphakic eyes without capsular support. However, it should be performed cautiously for eyes with severe iris defects.

关键词： descemet stripping automated endothelial keratoplasty artisan aphakia iris claw lens iris defect

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Improved performance of perovskite solar cells through using (FA)_x(MA)_(1-x)PbI_3 optical absorber layer

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Optoelectronics Letters 2019年第2期15卷 117-121页

作者： SUI mei-rong LI Sheng-ping GU Xiu-quan School of Medical Imaging Xuzhou Medical University School of Materials Science and Engineering China University of Mining and Technology

In this work, the perovskite solar cells(PSCs) were fabricated with the bandgap-tunable(FA)_x(MA)_(1-x)PbI_3 absorber layers through a facile two-stage deposition *** doping was realized by adding the formamidinium iodide(FAI) into a precursor MAI *** the surface morphology and electrochemical impedance spectra(EIS) were conducted to evaluate the absorber layers or solar *** the optimization, the best PSC performance of 14.73% was achieved at a nominal FAI content of 12.5 at.%.The performance enhancement was attributed to both the enhancement of visible light harvesting and carrier transport ***, the stability of a PSC device based on the single MAPbI_3 absorber layer was also investigated, and a power conversion efficiency(PCE) of 11.27 % remained even after laying in vacuum for 10 days.

关键词： PCE performance solar cells

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Resonances in Positron Hydrogen Scattering above the H (n=2) Threshold

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Chinese Physics Letters 2012年第5期29卷 93-96页

作者： YU rong-mei CHENG Yong-Jun JIAO Li-Guang ZHOU Ya-Jun Center for Theoretical Atomic and Molecular Physics Academy of Fundamental and Interdisciplinary ScienceHarbin Institute of TechnologyHarbin 150080

We investigate high partial wave resonances in positron-hydrogen scattering using the momentum-space coupledchannels optical method above the H (n =2) *** with angular momenta of L =0-6 are *** continuum and positronium formation channels are included via a complex equivalent local *** with the existing theoretical results are presented.

关键词： potential momentum

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