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加速康复外科概念在胸腰椎Denis A型骨折患者围手术期应激反应中的初步应用

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哈尔滨医科大学学报 2024年第2期58卷 193-197页

作者：袁之木刘建民邱燕森孙文建东南大学医学院附属南京同仁医院骨科江苏南京211102

目的评估和分析加速康复外科(accelerated rehabilitation surgery,ERAS)概念在胸腰椎Denis A型骨折患者围手术期管理中的应用,并对ERAS对患者生理和心理应激反应的影响进行研究。方法选取2020年1月~2021年6月我院手术治疗的60例Denis ... 详细信息

目的评估和分析加速康复外科(accelerated rehabilitation surgery,ERAS)概念在胸腰椎Denis A型骨折患者围手术期管理中的应用,并对ERAS对患者生理和心理应激反应的影响进行研究。方法选取2020年1月~2021年6月我院手术治疗的60例Denis A型胸腰椎骨折患者作为研究对象,随机分为常规组和ERAS组,每组30例。常规组接受常规围术期管理,ERAS组在常规组的基础上接受ERAS概念管理。观察和比较两组的治疗效果,以及两组手术前和手术后7 d血清皮质醇(cortisol,Cor)和白介素-6(interleukin-6,IL-6)水平,采用焦虑自评量表(Anxiety Self Rating Scale,SAS)评估两组的焦虑状态。结果通过实施不同的管理模式,ERAS组患者的失血量、术后住院天数和离床活动时间均显著优于常规组(P0.05);与治疗前比较,两组治疗后7 d血清Cor和IL-6水平升高(P0.05);实施后,两组患者的SAS评分均下降,ERAS组低于常规组,差异具有统计学意义(P<0.05)。结论ERAS概念应用于胸腰椎Denis A型骨折手术中,可促进患者早期康复,降低血清Cor和IL-6水平,减轻患者的应激反应,缓解患者焦虑,值得应用和推广。

关键词：加速康复外科概念 Denis胸腰椎A型骨折围手术期应激反应

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40 m高压空气暴露对潜水员肱动脉功能的影响

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海军军医大学学报 2024年第7期45卷 896-899页

作者：刘文武张婷婷文宇坤俞旭华徐佳骏王世锋海军军医大学(第二军医大学)海军特色医学中心潜水与高气压医学研究室上海200433 海军军医大学(第二军医大学)海军特色医学中心研究部上海200433

目的探讨40 m高压空气暴露对潜水员肱动脉功能的影响。方法选择5名潜水员作为受试者。所有受试者均接受最高压力为40 m的高压空气暴露,高气压暴露时间共计190 min。采用多普勒超声诊断仪检测高气压暴露前后受试者的肱动脉直径、收缩峰... 详细信息

目的探讨40 m高压空气暴露对潜水员肱动脉功能的影响。方法选择5名潜水员作为受试者。所有受试者均接受最高压力为40 m的高压空气暴露,高气压暴露时间共计190 min。采用多普勒超声诊断仪检测高气压暴露前后受试者的肱动脉直径、收缩峰值流速(SPV)、阻力指数(RI),计算血流介导的血管舒张(FMD),评价高气压暴露对肱动脉功能的影响。结果与高气压暴露前相比,高气压暴露后肱动脉直径呈下降趋势(P>0.05),RI和FMD稍有升高(P>0.05),而SPV下降(P<0.05)。结论40 m高压空气暴露可导致肱动脉收缩,血流阻力增加、流速下降,但对肱动脉的功能影响较小,FMD变化不显著。

关键词：潜水员血流介导的血管舒张血管内皮细胞肱动脉超声检查

Agronomic management practices in dryland wheat result in variations in precipitation use efficiency due to their differential impacts on the steps in the precipitation use process

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Journal of Integrative Agriculture 2023年第1期22卷 92-107页

作者： YANG wen-jia LI Yu-lin LIU Wei-jian WANG Shi-wen YIN Li-na DENG Xi-ping State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau College of Natural Resources and EnvironmentNorthwest A&F UniversityYangling 712100P.R.China College of Life Sciences Northwest A&F UniversityYangling 712100P.R.China Institute of Soil and Water Conservation Northwest A&F UniversityYangling 712100P.R.China Institute of Soil and Water Conservation Chinese Academy of Sciences&Ministry of Water ResourcesYangling 712100P.R.China

Yield loss due to low precipitation use efficiency(PUE)occurs frequently in dryland crop *** is determined by a complicated process of precipitation use in farmland,which includes several sequential steps:precipitation infiltrates into the soil,the infiltrated precipitation is stored in soil,the soil-stored precipitation is consumed through transpiration or evaporation,transpired precipitation is used to produce dry-matter,and finally dry-matter is re-allocated to *** steps can be quantified by six ratios:precipitation infiltration ratio(SW/SWe;SW,total available water;SWe,available soil water storage at the end of a specific period),precipitation storage ratio(SWe/P;P,effective precipitation),precipitation consumption ratio(ET/SW;ET,evapotranspiration),ratio of crop transpiration to evapotranspiration(T/ET;T,crop transpiration),transpiration efficiency(B/T;B,the increment of shoot biomass)and harvest index(Y/B;Y,grain yield).The final efficiency is then calculated as:PUE=SWe/P×SW/SWe×ET/SW×T/ET×B/T×Y/*** each of those ratios is crucial for the planning and execution of PUE improvements and for optimizing the corresponding agronomic practices in a specific agricultural *** this study,those ratios were quantified and evaluated under four integrated agronomic management *** study revealed that PUE and wheat yield were significantly increased by 8–31%under manure(MIS)or biochar(BIS)integrated systems compared to either conventional farmers’(CF)or high N(HN)integrated *** the infiltration and storage steps,MIS and BIS resulted in lower SWe/P but higher SW/SWe compared with CF and *** the consumption step,the annual ET/SW under MIS and BIS did not increase due to the higher ET after regreening and the lower ET before regreening compared with CF or *** T/ET was significantly higher under MIS and BIS than under CF or *** the last two steps,transpiration efficiency and harvest index were less strongly affected

关键词： precipitation use process precipitation use efficiency yield rainfed agriculture

High loading Pt nanoparticles on ordered mesoporous carbon sphere arrays for highly active methanol electro-oxidation

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Chinese Chemical Letters 2016年第6期27卷 832-836页

作者： Cheng-Wei Zhang Lian-Bin xu jian-Feng Chen State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology Hebei University of Technology

Three-dimensionally（3D） ordered mesoporous carbon sphere arrays（OMCS） are explored to support high loading（60 wt%） Pt nanoparticles as electrocatalysts for the methanol oxidation reaction（MOR）.The OMCS has a unique hierarchical nanostructure with ordered large mesopores and macropores that can facilitate high dispersion of the Pt nanoparticles and fast mass transport during the reactions. The prepared Pt/OMCS exhibits uniformly dispersed Pt nanoparticles with an average size of- 2.0 nm on the mesoporous walls of the carbon spheres. The Pt/OMCS catalyst shows significantly enhanced specific electrochemically active surface area（ECSA）（73.5 m^2g^-1） and electrocatalytic activity（0.69 mA cm^-2）for the MOR compared with the commercial 60 wt% Pt/C catalyst.

关键词： Carbon Pt nanoparticles High loading Electrocatalyst Methanol oxidation reaction Fuel cell

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Micra无导线起搏系统的临床应用研究

中国心脏起搏与心电生理杂志 2024年第4期38卷 268-272页

作者：邢建东徐伟邢玉龙南京市高淳人民医院心血管内科江苏南京210008 南京鼓楼医院心血管内科江苏南京210008

目的探讨Micra无导线起搏器系统临床应用的安全性及有效性。方法连续入选2020年1月至2022年12月在南京鼓楼医院住院治疗且具备Micra无导线起搏器系统植入适应证的心律失常患者41例。其中因囊袋感染电极导线拔除后再植入无导线起搏器21... 详细信息

目的探讨Micra无导线起搏器系统临床应用的安全性及有效性。方法连续入选2020年1月至2022年12月在南京鼓楼医院住院治疗且具备Micra无导线起搏器系统植入适应证的心律失常患者41例。其中因囊袋感染电极导线拔除后再植入无导线起搏器21例(再植入LP组),首次植入无导线起搏器20例(首次植入LP组)。对比分析两组的手术时间、释放次数、X线曝光时间、起搏参数、并发症等数据。随访两组植入1、3、6及12个月时起搏参数情况。结果所有患者均成功植入Micra无导线起搏器,起搏器植入部位为中高位室间隔。再植入LP组男性15例(71.4%),平均年龄(72.5±19.1)岁。首次植入LP组男性12例(60%),平均年龄(60.8±8.4)岁。再植入LP组与首次植入LP组相比,在手术时间、释放≤2次比例、X线曝光时间、起搏阈值、感知、阻抗之间均无差异(P均>0.05),两组均未发生手术及起搏器相关并发症和严重不良事件。两组患者在1、3、6及12个月随访时的起搏阈值、感知、阻抗均无差异(P均>0.05)。结论 Micra无导线起搏器植入安全可行,传统起搏器因感染并发症移除后更换无导线起搏器亦同样安全有效。

关键词：心血管病学无导线起搏器心脏起搏器感染导线拔除

^(68)Ga-DOTATATE PETCT显像在神经内分泌肿瘤诊断及病理分级中的应用研究

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中国CT和MRI杂志 2024年第8期22卷 111-113页

作者：李剑秋徐耀红李佳重庆医科大学附属第一医院核医学科重庆400016

目的探讨^(68)Ga-DOTATATE正电子发射断层成像(PET)/计算机断层成像(CT)在神经内分泌肿瘤(NET)诊断及病理分级中的应用价值。方法选择我院2022年1月到2023年6月期间86例疑似NET的患者为研究对象,经手术病理或病理活检结果确认74例为胃肠... 详细信息

目的探讨^(68)Ga-DOTATATE正电子发射断层成像(PET)/计算机断层成像(CT)在神经内分泌肿瘤(NET)诊断及病理分级中的应用价值。方法选择我院2022年1月到2023年6月期间86例疑似NET的患者为研究对象,经手术病理或病理活检结果确认74例为胃肠胰NET,12例为非NET。患者均接受多层螺旋CT(MSCT)、核磁共振成像(MRI)、^(68)Ga-DOTATATE PET-CT检查,分析患者影像学检查结果,探讨^(68)Ga-DOTATATE PET-CT显像在NET诊断及病理分级中的应用价值,按照病理诊断分级将G1级、G2级、G3级患者分别纳入A组、B组、C组,比较三组间病灶最大径、最大标准摄取值(SUV__(max))、平均标准摄取值(SUV_(mean))、肿瘤/本底比值(TBR)的差异。结果3种检查方法中,^(68)Ga-DOTATATE PETCT诊断效能最高,灵敏度为95.95%,特异度为83.33%,准确度为94.19%,kappa=0.766。三组间病灶最大径、SUV__(max)、SUV_(mean)差异有统计学意义(P<0.05);A组病灶最大径小于B组、C组,B组病灶最大径小于C组,差异有统计学意义(P<0.05);A组SUV__(max)和SUV_(mean)大于B组、C组,B组SUV__(max)和SUV_(mean)大于C组,差异有统计学意义(P<0.05)。结论^(68)Ga-DOTATATE PET-CT显像可以提高NET诊断价值,利于指导NET病理分级,有望为临床针对性治疗提供参考。

关键词： 68Ga-DOTATATE PET-CT 神经内分泌肿瘤诊断病理分级

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Properties of quark matter in a new quasiparticle model with QCD running coupling

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Science China(Physics,Mechanics & Astronomy) 2016年第6期59卷 49-57页

作者： Zhen Yan Lu Guang Xiong Peng jian Feng xu Shi Peng Zhang School of Physical Sciences University of Chinese Academy of Sciences Theoretical Physics Center for Science Facilities Institute of High Energy Physics

The running of the QCD coupling in the effective mass causes thermodynamic inconsistency problem in the conventional quasiparticle model. We provide a novel treatment which removes the inconsistency by an effective bag constant. The chemical potential dependence of the renormalization subtraction point is constrained by the Cauchy condition in the chemical potential space. The stability and microscopic properties of strange quark matter are then studied within the completely self-consistent quasiparticle model, and the obtained equation of state of quark matter is applied to the investigation of strange stars. It is found that our improved model can describe well compact stars with mass about two times the solar mass, which indicates that such massive compact stars could be strange stars.

关键词： quark matter quasiparticle model thermodynamic inconsistency

Synthesis and antioxidant activities of flavonoids derivatives,troxerutin and 3',4',7-triacetoxyethoxyquercetin

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Chinese Chemical Letters 2013年第3期24卷 223-226页

作者： jian-Dong xu Li-Wei Zhang Yu-Fa Liu College of Chemistry Chemical Engineering and Materials ScienceEngineering Research Center of Pesticide and Medicine Intermediate Clean ProductionMinistry of EducationShandong Normal University

Syntheses of two very important derivatives of quercetin, troxerutin and 3＇, 4＇, 7-triacetoxyethoxyquercetin were described. The latter was synthesized by highly selective esterification reaction in first time. The compounds were characterized by NMR, 1R and Mass spectroscopy. Additionally, the antioxidant activities of the compounds were tested by means of improved pyrogallol autoxidation method. This was the first in using this method to test the antioxidant activities of these two compounds in vitro, The optimum system of pyorgallol autoxidation spectrophotometry was investigated and established according to the reaction rules, The assay indicated that these compounds showed noticeable antioxidant activities, and compound 2 was much more effective as a free radical scavenger than the compound 1 vitamin C was used as a reference material,

关键词： QuercetinTroxerutin3' 4'. 7-TriacetoxyethoxyquercetinAntioxidant

Umbilical cord blood mercury levels in China

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Journal of Environmental Sciences 2013年第2期25卷 386-392页

作者： Meiqin Wu Chonghuai Yan jian xu Wei Wu Hui Li Xin Zhou MOE-Shanghai Key Laboratory of Children's Environmental Health Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine

Mercury （Hg） is a well-known neurotoxicant. Hg exposure at high levels can harm individuals of all ages. Even low level exposure to Hg can damage the brain of fetuses and young children, and affect their central nervous system and cognitive development. The aims of our study were to measure total Hg levels in infant umbilical cord blood and to investigate the risk factors associated with total Hg cord blood levels in various cities in China. Our goal was to provide clues for the prevention of Hg exposure in utero. The results indicated that the average cord blood mercury levels （CBMLs） were （1.81 ± 1.93） μg/L, which were lower than those found in most previous studies. The concentrations also differed according to geographic region. The CBMLs were not only associated with family economic and living conditions, but also with diet in pregnant women, especially the intake of marine fish, shellfish, poultry, formula milk and fruits.

关键词： infant mercury risk factor umbilical cord blood