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Preparation of Anti-oxidant Intercalated Layered Double Hydroxides and Performance against Thermo-Oxidative Degradation of Polypropylene

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Preparation of Anti-oxidant Intercalated Layered Double Hydr...

中国化学会第六届全国结构化学学术会议

作者： Q.Huang~2,Y.jiang~1,F.B.Zhang~2,S.T.Chen~2,Y.j.Feng~(1,*),D.Q.Li~1 1 State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,15 Beisanhuan East Road,100029,Beijing,China 2 Synthetic Resin Laboratory,Petrochemical Research Institute,PetroChina,jia No.25, Beiwucun Road,100195,Beijing,China

＜正＞Polypropylene（PP） is one of three mostly used general-purpose ***,however,severely suffers from thermal/thermo-oxidative degradation due to its structural ***,amount of anti-oxidants （ao） are used to improve the thermal stability of the ***,these anti-oxidants as low-molecular-weight chemicals have a migration trend to the surface of the ao/PP resulting in significant

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CT三维重建对外伤性脊柱骨折的诊断价值

放射学实践 2004年第3期19卷 224-224页

作者： R.j.Schroder M.Albus F.Kandziora 关键周义成不详华中科技大学同济医学院附属同济医院

目的:与轴位像和二维重建像进行比较,评价CT三维重建在术前评估外伤性脊柱骨折的诊断价值.方法:搜集42个月内65例(共有85处)不同类型急性外伤性脊柱骨折(从C2至L5)患者的CT影像资料.由3位有经验的CT医师采用Magerl分类法回顾性分析二维... 详细信息

目的:与轴位像和二维重建像进行比较,评价CT三维重建在术前评估外伤性脊柱骨折的诊断价值.方法:搜集42个月内65例(共有85处)不同类型急性外伤性脊柱骨折(从C2至L5)患者的CT影像资料.由3位有经验的CT医师采用Magerl分类法回顾性分析二维和三维重建图像,并将读片结果与术中发现或最终诊断进行比较.结果:骨折按ao分类分为56处压缩型骨折,16处分离型骨折,13处旋转型骨折.168处(56处×3人)A型骨折在轴位层面上单独分类误诊2处(占1.2%).48处(16处×3人)B型骨折CT分类误诊17处(占35.4%),39处(13处×3人)C型骨折CT分类误诊31处(占79.5%).二维重建的误诊百分比有所增加,A型骨折为7.7%(13处),B型骨折为54.2%(26处),C型骨折为69.2%(27处).三维模式分类误诊率A型骨折为1.2%(2/168),B型骨折为12.5%(6/48),C型骨折为2.6%(1/39).轴位像对诊断A型和B型骨折优于二维重建像,但在诊断C型骨折方面较差.三维重建像对B型骨折正确诊断百分比明显高于二维模式(P＜0.05).对于C型骨折,三维模式正确诊断百分比明显高于轴位像或二维重建(P＜0.001).对三维重建图像辅以虚拟切除,通过交互监测分析能有助于诊断,特别是对椎管的评价.结论:三维重建可明显改进外伤性脊柱骨折的诊断,特别是对旋转型骨折的显示和分类.不足在于伪影略有增加,影响对细节的显示.三维模式的交互监测分析和后处理被证明是有益的.

关键词： CT检查三维重建外伤性脊柱骨折影像学诊断临床分型

FELASA对A类实验动物技术人员教育和培训的建议

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实验动物与比较医学 2011年第1期31卷 5-10页

作者： j Weiss V Bukelskiene Ph Chambrier L Ferrari M van der Meulen M Moreno F Mulkens H Sigg N Yates 丁聪（译）富群华（校）施臻（校） FELASA BCM Box 2989伦敦WC1N 3XX英国

在欧洲，将提供三种不同层次的教育给未来的实验动物技术人员。所有候选人必须参加入门课程并达到A0级别。在这个级别（ao），他们将在监督下能够开展有限的具体工作，以在实验动物设施中提供帮助。绝大多数A0级别的助理至少要再进行一... 详细信息

在欧洲，将提供三种不同层次的教育给未来的实验动物技术人员。所有候选人必须参加入门课程并达到A0级别。在这个级别（ao），他们将在监督下能够开展有限的具体工作，以在实验动物设施中提供帮助。绝大多数A0级别的助理至少要再进行一年以上的教育培训才能得到全职工作。这个过程将包括持续评估以及有资格取得最终考试A1级别的人员的挑选。

关键词：实验动物设施教育培训技术人员 A类候选人

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未破裂的异位妊娠临床治疗后输卵管显影情况

世界核心医学期刊文摘（妇产科学分册） 2005年第7期1卷 53-53页

作者： Elito jr. j. Han K.K. Camano L. 杨晓梅 Department of Obstetrics Escola Paulista de Medicina Fed. University of S.ao Paulo Rua Maria Carolina 68 Jardim Paulistano CEP-01445- 000 SP Brazil

Objective: To evaluate tubal patency using hysterosalpingography after clinical treatment of tubal pregnancy. Method: Of 80 patients who underwent hysterosalpingography after clinical treatment of tubal pregnancy from April 1994 toFebruary 2002, 30 were treated with a single 50 mg/m2 dose of methotrexate intramuscularly (n=30) and 50 were followed up expectantly. Results: Patency of the ipsilateral tube was 84% after methotrexate treatment and 78% after expectant management. In addition, contralateral tubal patency was 97% after methotrexate treatment and 92% after expectant management. There were no statistically significant differences between the groups. Conclusion: Findings from this study suggest similar tubal patency rates after methotrexate treatment and expectant management.

关键词：异位妊娠显影情况输卵管妊娠氨甲蝶呤显影率子宫输卵管造影对侧输卵管患侧输卵管统计学显著性

不稳定型心绞痛和PTCA术后患者血小板和白细胞的黏附和激活

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世界核心医学期刊文摘（心脏病学分册） 2005年第9期1卷 50-50页

作者： Serrano jr. C.V. Rocha Giraldez R. De Lara Fernandes j. 孙凯 Heart Institute(InCor) Univ. of S. Paulo Medical School Av. Dr. E. de Carvalho Aguiar 44 So Paulo SP-05403-000 Brazil

Background: Unstable atherosclerotic plaques activate blood cells which may adhere to the coronary endothelium causing vessel occlusion. However, it is unknown if different clinical syndromes associated with plaque rupture induce similar blood cell activation and adhesion to the endothelium. Methods: We studied changes in adhesion molecule expression of platelets(GPIIb/IIIa), neutrophils -CD18, CD11b and L-selectin -and monocytes(CD14) after interaction with active lesions of patients with stable angina subjected to PTCA and patients with unstable angina(UA). Generation of superoxide(SO) radicals from PMNs and PMN sequestration in the coronary circulation were also assessed. Blood samples were collected from the aorta(ao) and coronary sinus(CS) before and 15 min after PTCA(n=13) and within the first 48 h of UA(n=12). Results: PTCA induced a marked up-regulation of CD18, CD11b, CD14 and GPIIb/IIIa with L-selectin shedding and reduced SO formation, whereas only minor L-selectin down-regulation and decreased SO production indicated activation in UA. However, a significant decrease in neutrophil count in the CS compared to the ao was only observed in UA. Conclusions: The magnitude of cellular activation depends on the underlying clinical setting and just partially contributes to cell adhesion to the endothelium which might be modulated by different extent of vascular occlusion and shear forces.

关键词：不稳定型心绞痛 PTCA术选择素冠状动脉循环稳定斑块斑块破裂黏附分子冠状窦临床综合征中性粒细胞

获得性局限性面部皮肤松弛症:病例报道和文献回顾

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世界核心医学期刊文摘（皮肤病学分册） 2005年第5期1卷 41-41页

作者： Perafán M.F. Franca L.F.S. an Riveros C.j. Bejarano Gavilét al. 张宪旗 Hosp.das Clin. da Faculdade de Med. Universidade de S.ao Paulo Ave. Dr E neas de Carvalho Aguiar 255 05403-900 S.ao Paulo SP Brazil

Background. Cutis laxa is an uncommon entity characterized by laxity of the sk in, which hangs in loose folds, producing the appearance of premature aging. It can be subdivided into congenital and acquired. This latter variant is rare and the skin involvement varies from generalized to localized. We report a case of a localized acquired cutis laxa confined to the face, without preceding inflammat ory lesions or systemic compromise. Four similar cases have been reported to dat e. The etiology remains unknown and there is no definitive treatment. Methods. A 27-year-old White woman came to our hospital with a wrinkled face, pendulous earlobes and drop eyelids. Changes began 5 years prior, and she appeared much ol der than her age. Results. Histological analysis and ultrastructural examination of skin biopsy revealed reduction and fragmentation of elastic fibers, confirmi ng the diagnosis of cutis laxa. No systemic involvement was diagnosed. The patie nt was submitted to plastic surgery for repair, with satisfactory results to dat e. Conclusions. Acquired localized cutis laxa confined to the face without prece ding inflammatory lesions is extremely rare. The etiology remains unknown. Clini cal features and histopathologic findings confirm the diagnosis. Surgical repair seems to be the only therapeutic choice, but the results are variable and tempo rary.

关键词：面部皮肤松弛症文献回顾面部皱纹弹力纤维眼睑松垂整形外科活检组织学早老症炎症变化特效治疗