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骨关节病股骨头不同区域的骨密度测量

中华骨科杂志 2003年第11期23卷 679-681页

作者：赵鉴非 Victor l Fornasier 首都医科大学附属北京同仁医院骨科 Department of Pathology Bone and Joint LaboratorySt.Michaels HospitalToronto UniversityTorontoCanada

目的测量髋关节骨关节病患者股骨头不同区域骨密度,并探讨其与全髋关节置换后远期临床疗效之间的关系。方法将235个股骨头分为:骨关节炎组(OA组)、股骨头坏死组(ON组)、类风湿性关节炎组(RA组)、骨关节炎伴股骨颈骨折组(骨折组)和其他... 详细信息

目的测量髋关节骨关节病患者股骨头不同区域骨密度,并探讨其与全髋关节置换后远期临床疗效之间的关系。方法将235个股骨头分为:骨关节炎组(OA组)、股骨头坏死组(ON组)、类风湿性关节炎组(RA组)、骨关节炎伴股骨颈骨折组(骨折组)和其他组。在股骨头顶中心部位,从冠状面切取两张骨片标本,其余部分沿矢状面依次切取骨片标本,厚度≤5mm,行X线检查。将骨片标本制成4μm厚的切片,采用骨形态计量学方法测量股骨头不同区域的骨密度和股骨距的骨密度。结果OA组和RA组的外上及内下非负重区、骨折组各区骨密度均低于正常,各组骨距区哈佛管的百分数均超过正常值。OA组与骨折组股骨头骨骺线以上的负重区和非负重区、ON组与骨折组的负重区和非负重区骨密度比较差异有显著性意义。OA组负重区与非负重区骨密度比较差异有非常显著性意义。骨折组负重区与非负重区骨密度比较差异有显著性意义。骨距区内哈佛管增多,骨密度下降,是造成假体松动,影响远期疗效的一个重要因素。结论获得的各种髋关节骨关节病股骨头骨密度数据,可为临床科研工作提供一个基本参考值;同时获得的骨距区骨密度值,既可以预测髋关节置换后远期临床疗效,又可为股骨假体的改进和设计提供骨形态计量学数据。

关键词：骨关节病股骨头不同区域骨密度测量股骨颈骨折

Polysorb^R(an absorbable lactomer) staples, a safe closure technique for distal pancreatic resection

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World Journal of Gastroenterology 2014年第45期20卷 17185-17189页

作者： Gyula Farkas lászló leindler János Márton Gyorgy lázár Gyula Farkas Department of Surgery Faculty of Medicine University of Szeged H-6701 SzegedHungary

AIM:To investigate twenty-year experience evaluated the use of the PolysorbR(an absorbable lactomer)staples for distal pancreatic ***:The data on 150 patients[92 men,58women,mean age 52(24-72)years]who underwent distal pancreatectomy(DP)in the last 20 years were collected prospectively from an electronic *** diagnosis was confirmed by endoscopic retrograde cholangiopancreatography,sonography,computed tomography and/or magnetic resonance *** indications for DP were focal pancreatic necrosis,spontaneous pancreatic fistulas,abscesses,pseudocysts,segmental chronic obstructive pancreatitis in the tail,traumatic disruption,and benign(cystadenomas,insulinomas,or glucagonomas)or malignant *** distal resections were performed without splenectomy in 29 of the 150 patients(19%).In the event of splenectomy,the splenic artery and vein were individually ligated,the TA-55 Auto Suture stapler,loaded with Premium PolysorbR 55 staples(5.5mm),was placed across the gland,and the trigger was pulled,the action of which produced two staggered absorbable suture *** gland distal to the stapler wasthen amputated with a scalpel on the TA-55 stapler and the two rows of staples were left in the proximal pancreatic *** the distal resection,a drainage tube was inserted into the pancreatic ***:The average duration of the operation was150 min(range:90-210 min)and no transfusion was indicated during the *** DP in one patient a type B fistula was diagnosed,which was treated successfully by conservative treatment comprising of 12-d octreotide medication(3×0.1 mg/d)and jejunal *** incidence of postoperative pancreatic fistula was therefore0.6%.Another 2 patients suffered postoperative pancreatitis,which was also conservatively *** were performed in 2 patients on the first or second postoperative day,necessitated by bleeding from the retroperitoneal *** morbidity was 3.3%(5 patients),but no mortality

关键词： Distal pancreatic resection PolysorbR sta-ples Clo

中国城镇在业夫妻家务劳动参与的影响因素分析——来自第三期中国妇女社会地位调查的发现

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妇女研究论丛 2013年第5期 90-101页

作者：周旅军北京大学社会学系北京100871

本文使用2010年第三期中国妇女社会地位调查数据,除了从普通最小二乘法回归分析的角度研究城镇已婚在业者参与家务劳动的影响因素外,还特别关注群体内部的异质性,尤其是更多参与到家务劳动中的男人和更少承担起家务劳动的女人。通过在... 详细信息

本文使用2010年第三期中国妇女社会地位调查数据,除了从普通最小二乘法回归分析的角度研究城镇已婚在业者参与家务劳动的影响因素外,还特别关注群体内部的异质性,尤其是更多参与到家务劳动中的男人和更少承担起家务劳动的女人。通过在同一性别群体内按家务劳动时间分层,使用分位数回归方法能更全面地描述影响因素的作用。模型表明,在家务劳动时间的不同分位点上,同一因素的作用不同,表现为参数大小和统计显著性的变动。对于城镇在业夫妻而言,现有的家务分工理论在高分位点上有最好的解释能力,而在低分位点上仍需寻找其它更有影响的因素。

关键词：家务劳动家务分工分位数回归

Ascorbic acid and low-volume polyethylene glycol for bowel preparation prior to colonoscopy:A meta-analysis

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World Journal of Meta-Analysis 2013年第1期1卷 10-15页

作者： Jonathan D Godfrey Robert E Clark Abhishek Choudhary Imran Ashraf Michelle l Matteson Srinivas R Puli Matthew l Bechtold Division of Gastroenterology University of Missouri Columbia MO 65212 United States OSF MG Gastroenterology University of Illinois Peoria IL 61604 United States

AIM: To evaluate the benefits of low-volume polyethylene glycol(PEG) with ascorbic acid compared to fulldose PEG for colonoscopy preparation. METHODS: MEDlINE, Cochrane Central Register of Controlled Trials and Database of Systematic Reviews, CINAHl, Pub Med, and recent abstracts from major conferences were searched(january 2012). Only randomized-controlled trials on adult subjects comparing lowvolume PEG(2 l) with ascorbic acid vs full-dose PEG(3 or 4 l) were included. Meta-analysis for the efficacy of low-volume PEG with ascorbic acid and full-dose PEG were analyzed by calculating pooled estimates of number of satisfactory bowel preparations as well as adverse patient events(abdominal pain, nausea, vomiting). Separate analyses were performed for each main outcome by using OR with fixed and random effects models. Heterogeneity was assessed by calculating the I2 measure of inconsistency. Rev Man 5.1 was utilized for statistical ***: The initial search identified 242 articles and trials. Nine studies(n = 2911) met the inclusion criteria and were analyzed for this meta-analysis with mean age range from 53.0 to 59.6 years. All studies were randomized controlled trials on adult patients comparing large-volume PEG solutions(3 or 4 l) with low-volume PEG solutions and ascorbic acid. No statistically significant difference was noted between lowvolume PEG with ascorbic acid and full-dose PEG for number of satisfactory bowel preparations(OR 1.07, 95%CI: 0.86-1.33, P = 0.56). No statistically significant difference was noted between low-volume PEG with ascorbic acid and full-dose PEG for abdominal pain(OR 1.09, 95%CI: 0.81-1.48, P = 0.56), nausea(OR 0.70, 95%CI: 0.49-1.00, P = 0.05), or vomiting(OR 0.99, 95%CI: 0.78-1.26, P = 0.95). No publication bias was ***: low-volume PEG with the addition of ascorbic acid demonstrates no statistically significant difference to full-dose PEG for satisfactory bowel preparation and side-effects.

关键词： Polyethylene glycol Ascorbic acid Colonoscopy Meta-analysis Bowel preparation

High school sports programs differentially impact participation by sex

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Journal of Sport and Health Science 2015年第3期4卷 282-288页

作者： Keith M. Drake Meghan R. longacre Todd MacKenzie linda J. Titus Michael l. Beach Andrew G. Rundle Madeline A. Dalton Hood Center for Children and Families Geisel School of Medicine at Dartmouth Lebanon NH 03756 USA Department of Pediatrics Geisel School of Medicine at Dartmouth Lebanon NH 03756 USA Department of Community and Family Medicine Geisel School of Medicine at Dartmouth Lebanon NH 03756 USA Department of Medicine Dartmouth-Hitchcock Medical Center Lebanon NH 03756 USA Department of Anesthesiology Dartmouth--Hitcheock Medical Center Lebanon NH 03756 USA Department of Epidemiology Mailman School of Public Health Columbia University New York NY 10032 USA

背景:研究表明,参加体育活动可降低儿童和青少年肥胖的风险。学校是促进儿童和青少年参加体育活动的理想环境,但目前尚不清楚体育活动的"获得"和"选择"如何影响学生的参与度,也不清楚学校体育课的特点对学生参与体育的影响是否存在性别... 详细信息

背景:研究表明,参加体育活动可降低儿童和青少年肥胖的风险。学校是促进儿童和青少年参加体育活动的理想环境,但目前尚不清楚体育活动的"获得"和"选择"如何影响学生的参与度,也不清楚学校体育课的特点对学生参与体育的影响是否存在性别差异。本研究旨在评价高中体育运动项目的特点,并确定这些体育课程对男女生参与运动队的影响程度。方法:用电话采访的方式纵向调查了1,244名新罕布什尔州和佛蒙特州的学生。学生自述他们小学至高中阶段参与运动队的情况。通过调查高中职员了解体育机会。在本研究中,"体育机会"是指每100名学生所对应的学校提供的体育项目种类《选择)和学校提供的体育种类中不限制参加人数的体育项目的比例(获得)。结果:约70%的儿童参加了至少一个体育运动队,男生为73%,女生为66%。研究发现在性别和两个体育机会变量之间存在显著交互影响。控制小学生参与体育活动和其他协变量后,发现如果学校不限制最受欢迎的体育项目的参与人数,男生会参加更多的体育运动队(RR=1.12,p<0.01)。相反,如果学校提供广泛的体育项目,女生会参加更多的体育运动队(RR=1 47,p<0.001)。结论:前人研究表明,参加体育活动能带来许多健康效益。对公共卫生工作包括预防肥胖而言,学校体育课可能是一个重要而有效但未被充分利用的对象。要使青少年参加更多的体育活动,就应综合考虑学校体育项目的获得和选择。学校可运用不同策略,促使男生和女生更多地参加体育活动。

关键词：体育节目高中差异性体育运动体育项目体育活动工作人员公共卫生

PHASE INHOMOGENEITY OF Pb2MoO5 SINGlE CRYstalS

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PHASE INHOMOGENEITY OF Pb2MoO5 SINGLE CRYSTALS

Sixteenth Congress of the International Union of Crystallography

作者： D.D.Nihtianova S.S.Angelova l.K.Djonev l.l.Petrov K.P.Petrov Institute of Applied Mineralogy Bulgarian Academy of Sciences Rakovski str.921000 SofiaBulgaria

The existence of PbO and PbMoO microphases in PbMoO crystals was not explained earlier(Nihtianova et ***. 1989,Budapest,Booklet,p.19).Pale yellow PbMoO crystals, obtained by Czochralski method at different conditions,were investigated by PDA(DRON 3M),ST A(sta 1500),TEM (TEM 420 Philips) and SEM(SEM 515 Philips) in order to determine the origin of the additional solid state microinclusions in *** searching for the optimal conditions of obtaining PbMoO nutrient in a solid state reaction of initial oxides 2PbO

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皖西金寨方言“倒”的多功能用法探析

信阳农林学院学报 2023年第2期33卷 75-79页

作者：吕可彭泽润湖南师范大学文学院湖南长沙410081

皖西金寨方言中的“倒”主要有动词、能可义助词、结果义助词和体助词四种多功能用法。此外,金寨方言中的“倒”还可以和“个”“些儿”以及“在”配合使用以表达动作或状态的持续,体现出一定的特殊性。最后,通过对比周边方言中“倒”... 详细信息

皖西金寨方言中的“倒”主要有动词、能可义助词、结果义助词和体助词四种多功能用法。此外,金寨方言中的“倒”还可以和“个”“些儿”以及“在”配合使用以表达动作或状态的持续,体现出一定的特殊性。最后,通过对比周边方言中“倒”的相关句式,说明了金寨方言在语法方面具有中原官话和江淮官话的混合性特征。

关键词：金寨方言倒多功能用法

Disinfection of Primary Municipal Wastewater Effluents Using Continuous UV and Ozone Treatment

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Journal of Water Resource and Protection 2014年第1期6卷 16-21页

作者： Yaneth Bustos Mabel Vaca Raymundo lópez Erick Bandala luis Torres Neftalí Rojas-Valencia Departamento de Energía Ciencias Básicas e Ingeniería Universidad Autónoma Metropolitana Azcapotzalco México Departamento de Ingeniería Civil y Ambiental Universidad de las Américas Puebla. Sta. Catarina Mártir Cholula México Unidad Profesional Interdisciplinaria de Biotecnología Instituto Politécnico Nacional México D. F. México Universidad Nacional Autónoma de México Instituto de Ingeniería Coordinación de Ingeniería Ambiental México D. F. México

UV radiation and ozonation were investigated as disinfection alternatives for the wastewater treatment plant. The inactivation of total and fecal coliforms using ozone and ultraviolet radiation as separate treatments was evaluated. Different ozone concentrations (3 to 40 mg O3/l) were applied and UV fluencies ranging from 8.5 to 12 mJ/cm2 at different pH values (from 5 to 9) were tested. Best results were obtained for ozone doses near 20 mg/min with removals of 72% and 78% of fecal and total coliforms, respectively. The ozone also was capable of oxidizing organic matter in the effluent measured as COD (the highest removal obtained was 36% for 20 mg O3/min). Maximum bacterial resistance was observed at pH 7 in both cases. The UV light offered a high bacterial inactivation (over 80%) and the lowest bacterial inactivation was observed at pH 7. Finally, we obtained the electric energy per order (EEO, kWh/m3/order), defined as the electric energy (kW-h) required to degrade a contaminant by one order of magnitude in a unit volume of contaminated water, being noteworthy that EEO values for the UV process resulted were lower than those determined for the process with ozone in all the water flow tested.

关键词： Disinfection Ozone Treatment UV Treatment Wastewater

Turbiscan多重光散射法研究纳米银溶胶的分散稳定性

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光谱学与光谱分析 2015年第7期35卷 1992-1996页

作者：夏朝辉吕丽云王虹天津大学化工学院绿色合成与转化教育部重点实验室天津300072

以硝酸银为银源、间苯二酚为还原剂、聚乙烯吡咯烷酮为保护剂通过化学还原法制得纳米银颗粒,通过离心洗涤等操作洗掉多余的反应物,将其分别超声分散于水、无水乙醇和乙二醇中获得0.2 Wt%不同体系的纳米银溶胶。利用激光粒度分析仪、透... 详细信息

以硝酸银为银源、间苯二酚为还原剂、聚乙烯吡咯烷酮为保护剂通过化学还原法制得纳米银颗粒,通过离心洗涤等操作洗掉多余的反应物,将其分别超声分散于水、无水乙醇和乙二醇中获得0.2 Wt%不同体系的纳米银溶胶。利用激光粒度分析仪、透射电子显微镜、扫描电子显微镜和同步热分析仪对纳米银颗粒进行表征并测定纳米银溶胶中的银含量。激光粒度分析仪的粒度分析结果表明,实验制得的纳米银颗粒的粒径在100nm左右,且粒径分布均一。透射电子显微镜和扫描电子显微镜的结果进一步证实纳米银颗粒的粒径在纳米尺度范围且粒径均匀。采用Turbiscan多重光散射法研究了不同体系纳米银溶胶的分散稳定性,分析了导致纳米银溶胶不稳定的主要因素。研究发现:影响纳米银溶胶分散稳定性的主要因素包括颗粒粒径的变化和颗粒的迁移。对于水相体系,样品池中间部分背散射光强度随时间变化不大,样品池底部和顶部背散射光强度有较大变化,说明其稳定性的主要影响因素是纳米银颗粒的迁移,颗粒粒径变化影响不大;对于乙醇和乙二醇体系,样品池中间部分、底部和顶部的背散射光强度均有明显变化,说明颗粒粒径的变化和颗粒的迁移对体系稳定性均有一定程度的影响;最后通过比较三个体系的稳定性动力学指数,得到体系稳定性由高到低依次为乙二醇、水和乙醇。

关键词：纳米银溶胶稳定性 Turbiscan lab