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Association of interpregnancy interval and risk of adverse pregnancy outcomes in woman by different previous gestational ages

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Chinese Medical Journal 2024年第1期137卷 87-96页

作者： Peiran Chen Yi Mu Zheng liu Yanping Wang Xiaohong li li Dai Qi li mingrong li Yanxia Xie Juan liang Jun Zhu National Office for Maternal and Child Health Surveillance of China West China Second University HospitalSichuan UniversityChengduSichuan 610066China Department of Obstetrics West China Second University HospitalSichuan UniversityChengduSichuan 610066China Key Laboratory of Birth Defects and Related Diseases of Women and Children Ministry of EducationSichuan UniversityChengduSichuan 610066China

Background:With an increasing proportion of multiparas,proper interpregnancy intervals(IPIs)are urgently ***,the association between IPIs and adverse perinatal outcomes has always been *** study aimed to explore the association between IPIs and adverse outcomes in different fertility policy periods and for different previous gestational ***:We used individual data from China’s National Maternal Near Miss Surveillance System between 2014 and *** Poisson models with restricted cubic splines were *** adverse outcome was analyzed separately in the overall model and stratified *** stratified models included different categories of fertility policy periods(2014-2015,2016-2017,and 2018-2019)and infant gestational age in previous pregnancy(livery[VD]and 1.10[1.03,1.19]for cesarean section[CS]),low Apgar scores and small for gestational age(SGA),and a decreased risk of diabetes mellitus in pregnancy,preeclampsia or eclampsia,and gestational hypertension.A long IPI(≥60 months)was associated with an increased risk of preterm birth(OR[95%CI]:1.18[1.11,1.26]for VD and 1.39[1.32,1.47]for CS),placenta previa,postpartum hemorrhage,diabetes mellitus in pregnancy,preeclampsia or eclampsia,and gestational *** policy changes had little effect on the association of IPIs and adverse maternal and neonatal *** estimated risk of preterm birth,low Apgar scores,SGA,diabetes mellitus in pregnancy,and gestational hypertension was more profound among women with previous term births than among those with preterm births or pregnancy ***:For pregnant women with shorter or longer IPIs,more targeted health care measures during pregnancy should be formulated according to infant gestational age in

关键词： Interpregnancy interval Fertility policy Gestational age Preterm birth Gestational hypertension Diabetes mellitus in pregnancy

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川西北某隧道涌水量及水压力分析

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高速铁路技术 2024年第4期15卷 87-93页

作者：邹和兵宋章陶玉敬周航李鸣荣中铁二院工程集团有限责任公司成都610031 云南省交通规划设计研究院股份有限公司昆明650041

川西北某隧道工程区构造发育、岩体破碎、水压高,隧道施工和运营面临严峻考验。为了研究涌水量及水压力对隧道施工和运营的影响,对隧址区开展了地质勘探,并采用理论计算和有限元模拟分析了隧道施工期和运营期的涌水量、水压力分布。研... 详细信息

川西北某隧道工程区构造发育、岩体破碎、水压高,隧道施工和运营面临严峻考验。为了研究涌水量及水压力对隧道施工和运营的影响,对隧址区开展了地质勘探,并采用理论计算和有限元模拟分析了隧道施工期和运营期的涌水量、水压力分布。研究结果表明:(1)隧址区水文地质单元内岩性为非可溶岩,地下水属于中等含水岩层的基岩裂隙水;受构造作用的影响,地层岩体裂隙发育,为地下水渗流提供了良好的通道;隧址区内地下水主要补给来源为大气降水,多年平均降雨量约620 mm,最大降雨量约1034 mm;(2)隧道全长正常涌水量约为6940 m^(3)/d,最大涌水量约为11610 m^(3)/d;(3)隧道开挖后,上方围岩产生降水漏斗,地下水部分流失,而强降雨天气导致地下水位大幅增长;(4)随着水头高度的增大,隧道水压力和涌水量剧增,威胁隧道结构的安全。隧道的防排水结构与衬砌设计需考虑强降雨天气的影响。

关键词：隧道川西北水文地质涌水量水压力强降雨

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高原地区医学科普图书的创作思考和实践

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卫生职业教育 2024年第15期42卷 18-22页

作者：李明蓉马亚伟乐文月王颖雅安职业技术学院四川雅安625000 四川工商职业技术学院四川都江堰611830

在健康中国和乡村振兴战略背景下,通过分析高原地区医学科普图书创作必要性和当前医学科普图书不足的情况,结合创作实践从目标受众的特点、人文关怀的实现、科普创作体式、科普图示、科普语篇的实现方式等方面阐释高原地区医学科普图书... 详细信息

在健康中国和乡村振兴战略背景下,通过分析高原地区医学科普图书创作必要性和当前医学科普图书不足的情况,结合创作实践从目标受众的特点、人文关怀的实现、科普创作体式、科普图示、科普语篇的实现方式等方面阐释高原地区医学科普图书的创作要点。科普医学急救知识的同时讲述中国基层医生的故事,让群众了解医务工作者,促进医患关系和谐,助推乡村振兴,促进民族融合。

关键词：高原地区医学科普图书创作要点

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专案护理在冠脉CTA检查前患者准备中的应用效果

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中国医药指南 2024年第24期22卷 36-39页

作者：李明蓉谢淼森张凌菱邱惠娟林艺敏林英利厦门医学院附属海沧医院(厦门市第六医院)门诊部厦门361000

目的分析专案护理干预在冠脉CTA检查前患者准备中的应用价值。方法选取2023年1月至2023年12月在我院接受冠脉CTA检查的178例患者,经随机数字表法将其分成两组,对照组与研究组各89例。对照组接受常规护理干预,如认真做好入院宣教工作,对... 详细信息

目的分析专案护理干预在冠脉CTA检查前患者准备中的应用价值。方法选取2023年1月至2023年12月在我院接受冠脉CTA检查的178例患者,经随机数字表法将其分成两组,对照组与研究组各89例。对照组接受常规护理干预,如认真做好入院宣教工作,对其生命体征进行密切观察,对其过敏史进行了解,并指导其做好相关的准备工作;研究组则接受专案护理干预。比较两组的冠脉CTA检查效率、心理状态、图像质量,以及患者总满意度、主动配合度、相关知识知晓情况。结果相比于对照组,研究组检查准备时间、检查时间更短(P<0.05)。相比于护理前,两组护理后的SDS评分、SAS评分均降低(P<0.05);而与对照组护理后相比,研究组SDS评分、SAS评分降幅更加明显(P<0.05)。研究组的图像质量总体合格率以及患者总满意度、主动配合度、相关知识知晓率均高于对照组(P<0.05)。结论在冠脉CTA检查前患者准备中应用专案护理干预不但能重建、提高患者的认知水平,而且能为其提供正确的心理引导,缓解不良情绪,消除疑虑,进而提高检查效率及患者总满意度。

关键词：冠脉CTA 专案护理干预准备应用价值

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Temporal Trends of Maternal Mortality Due to Obstetric Hemorrhage in Chinese Mainland: Evidence from the Population-Based Surveillance Data Between 2000 and 2019

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Maternal-Fetal Medicine 2022年第3期4卷 169-178页

作者： Yi Mu Jun Zhu Yanping Wang Jiani Zhang mingrong li Peiran Chen Yanxia Xie Juan liang Xiaodong Wang National Office for Maternal and Child Health Surveillance of China West China Second University HospitalSichuan UniversityChengdu 610041China Key Laboratory of Birth Defects and Related Diseases of Women and Children(Sichuan University) Ministry of EducationChengdu 610041China Department of Obstetrics and Gynecology West China Second University HospitalSichuan UniversityChengdu 610041China.

Objective:To analyze the temporal trends of maternal mortality ratio(MMR)due to obstetric hemorrhage and its specific causes in Chinese mainland from 2000 to 2019,to identify whether the rate of change has accelerated or slowed down during this period,and to find the prior cause of obstetric hemorrhage that needs to be intervened in the ***:Individual information on maternal deaths and total number of live births from 336 surveillance sites across 31 provinces in Chinese mainland was collected from the National Maternal and Child Health Surveillance System between 2000 and *** death was defined according to the World Health Organization’s *** final underlying cause of death was confirmed by the national review and was coded according to International Classification of *** trends for changes in characteristics of maternal deaths were assessed using linear or logistic models with the year treated as a continuous *** MMR and 95%confidence intervals(CI)for regions or causes were estimated by Poisson’s *** regression was used to assess the accurate temporal ***:The national MMR due to obstetric hemorrhage was 18.4 per 100,000 live births(95%CI:15.0–22.2)in *** peaked in 2001(22.1 per 100,000 live births,95%CI:18.3–26.4)and was lowest in 2019(1.6 per 100,000 live births,95%CI:1.0–2.3).For specific regions,the MMR due to obstetric hemorrhage in rural areas and western regions both experienced a slight rise,followed by a rapid decline,and then a slow *** specific causes,no change point was found in joinpoint analysis of the national MMR caused by placenta previa,postpartum uterine atony,and retained placenta(the annual percent change was12.0%,10.5%,and21.0%,respectively).The MMR caused by postpartum hemorrhages(PPH)significantly declined by 8.0%(95%CI:1.9–13.6)per year from 2000 to *** annual percent change of MMR caused by PPH accelerated further to25.0%between 2007

关键词： Maternal mortality Obstetric haemorrhage Temporal trend Annual percent change China

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Effect of synergistic urea by nitrification inhibitor coated with resin on wheat growth and soil nitrogen supply

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Pedosphere 2024年第5期 960-970页

作者： Yaru GE Yu li Yuanjie DONG mingrong HE Xinglong DAI College of Resources and Environment Shandong Agricultural University Agronomy College Shandong Agricultural University

Combining nitrification inhibitor and urea can improve crop yield and nitrogen (N) use efficiency (NUE). However, the inhibitor easily gets inactivated in soil, making it difficult to achieve the desired effect. To develop a synergistic urea for increasing the inhibitor action time, soil N supply, and wheat growth,dicyandiamide (DCD) was coated after granulation with epoxy resin and then mixed with urea to develop new resin-coated DCD (RCD) synergistic *** electron microscopy (SEM) and hydrostatic release tests were used to evaluate the membrane microstructure and the controlled-release performance of RCD. Five fertilization treatments were set up in the field:zero-N control (CK), urea (U), urea+common DCD particles (SUD1), urea+RCD (SUD2),and urea+both common DCD particles and RCD (3:7, weight/weight)(SUD3) to investigate the effects of the DCD synergistic urea on wheat growth, yield,and NUE and soil available N content. The SEM results showed that RCD had a complete coating, smooth surface, and small and rugged channels for DCD release in the profile. The hydrostatic release test at 25?C showed that the release period of DCD was extended to ten days due to resin coating. In the three DCD synergistic urea treatments, only SUD3 resulted in a significant increase in wheat yield (18.47%) compared with U. The NUE in SUD3 was significantly higher than those in SUD2, U, and SUD1. The treatment SUD3 had higher soil available N content than the other treatments during the key wheat growth stages, while effectively reducing the risk of soil nitrate leaching during wheat maturity. In summary, SUD3, a mixture of urea, DCD particles, and RCD, was the best treatment for significantly increasing wheat growth, yield, and NUE and soil N supply.

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Biotin-modified Galactosylated Chitosan-gene Carrier in Hepatoma Cells Targeting Delivery

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Journal of Wuhan University of Technology(Materials Science) 2024年第2期39卷 522-531页

作者：程明荣张锋李清王华 Department of General Surgery Nanxiang Branch of Ruijin HospitalShanghai 201802China Minhang District Pujin Community Health Service Center Shanghai 201112China Hepatobiliary Surgery Center Tongji Hospital Affiliated to Tongji UniversityShanghai 200065China

Our previous studies have successfully grafted biotin and galactose onto chitosan(CS)and synthesized biotin modified galactosylated chitosan(Bio-GC).The optimum N/P ratio of Bio-GC and plasmid DNA was 3:*** this N/P ratio,the transfection efficiency in the hepatoma cells was the highest with a slow release ***-GC nanomaterials exhibit the protective effect of preventing the gene from nuclease degradation,and can target the transfection into hepatoma cells by combination with galactose and biotin *** transfection rate was inhibited by the competition of galactose and ***-GC nanomaterials were imported into cells’cytoplasm by their receptors,followed by the imported exogenous gene transfected into the ***-GC nanomaterials can also cause inhibitory activity in the hepatoma cells in the model of orthotopic liver transplantation in mice,by carrying the gene through the blood to the hepatoma *** together,bio-GC nanomaterials act as gene vectors with the activity of protecting the gene from DNase degradation,improving the rate of transfection in hepatoma cells,and transporting the gene into the cytoplasm in vitro and in ***,they are efficient hepatoma-targeting gene carriers.

关键词： gene vector hepatocellular carcinoma nanoparticles sustained release gene therapy

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论企业原材料采购过程中的质量控制

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中国市场 2008年第10期 128-129页

作者：李明荣桂林航天工业高等专科学校工商管理系

采购优质的生产原材料是企业生产高质量产品的前提和基础。本文从原材料实行分类管理,分类评价、选择合格的供应商,加强入库前的验收控制,严格仓储管理等方面,讨论了企业采购原材料过程中如何进行质量控制的方法。

关键词：原材料采购过程质量控制

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泥鳅幼鱼配合饲料中蛋白质、脂肪、糖类及纤维素的适宜含量研究

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饲料工业 2017年第10期38卷 15-20页

作者：杨明容李达曹岩江西生物科技职业学院江西南昌330200

采用四因素三水平L_9(3~4)正交试验设计,制成蛋白质含量为25%、30%、35%,脂肪含量为4%、8%、12%,糖含量20%、25%、30%,纤维素含量1.6%~2.0%、2.0%~2.4%、2.4%~2.8%的9种泥鳅幼鱼配合饲料,进行为期38 d的饲养试验,以探讨初始体重为(1.23... 详细信息

采用四因素三水平L_9(3~4)正交试验设计,制成蛋白质含量为25%、30%、35%,脂肪含量为4%、8%、12%,糖含量20%、25%、30%,纤维素含量1.6%~2.0%、2.0%~2.4%、2.4%~2.8%的9种泥鳅幼鱼配合饲料,进行为期38 d的饲养试验,以探讨初始体重为(1.23±0.09)g的泥鳅幼鱼配合饲料中蛋白质、脂肪、糖、纤维素的适宜含量。结果表明,各营养素对泥鳅幼鱼增重率、特定生长率、蛋白质效率的影响顺序为:蛋白质>脂肪>纤维素>糖;当配合饲料中粗蛋白质为35%,脂肪为8%,糖为25%~30%,粗纤维为1.6%~2.0%时,泥鳅幼鱼的WGR、SGR最大,PER最高,FCR最小,CF各组间无显著差异(P>0.05)。通过综合分析,在本试验条件下,蛋白质为主要营养素(P0.05),泥鳅幼鱼配合饲料中蛋白质、脂肪、糖和纤维素的适宜含量分别为35%、8%、25%~30%、1.6%~2.0%。

关键词：泥鳅配合饲料蛋白质脂肪糖纤维素需求量

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机载振动敏感设备减振设计方法与应用

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雷达科学与技术 2019年第1期17卷 104-111,118页

作者：李明荣彭超张亚玎中国电子科技集团公司第三十八研究所安徽合肥230088 国家级工业设计中心(中国电科38所) 安徽合肥230088

针对机载振动敏感设备面临的日益苛刻的振动环境适应性要求,开展减振设计方法和应用的研究。分别对机载振动敏感电子设备的振动环境条件获取方法、振动许用条件的测试手段、减振设计参数的计算方法、减振性能评估的措施进行了详细的探索... 详细信息

针对机载振动敏感设备面临的日益苛刻的振动环境适应性要求,开展减振设计方法和应用的研究。分别对机载振动敏感电子设备的振动环境条件获取方法、振动许用条件的测试手段、减振设计参数的计算方法、减振性能评估的措施进行了详细的探索,解决了减振设计过程中缺少相关设计输入、输出和选型参数的困境。并基于该方法对某机载频率源进行了减振设计的应用,应用结果表明基于该方法设计的减振设计方案,具有很好的减振效果。相比于直接安装,安装隔振器后频率源的振动响应得到了有效的抑制,并且频率源的相噪得到了明显改善。加装隔振器后相噪值均满足设计要求,减振设计达到了预期目标,同时验证了该减振设计方法的可行性。

关键词：电子设备减振设计频率源相位噪声隔振器

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