维普中文期刊产品整合服务
1140篇 您的检索式:作者名="MaH"
    题名 作者 年代 出处 被引量
1锥形束计算机断层扫描中牙齿的分割精度显示文摘目的:研究锥形束计算机断层扫描(cone beam computerized tomography,CBCT)影像中分割提取正常牙齿体积的精度。方法:选择10例正畸减数病例拔除的双尖牙24颗,采用排水法物理测量其体积(volume of water,Vw),其中7例(16颗牙齿)在减数前采用i-CAT进行三维扫描,3例(8颗牙齿)使用CB MercuRay。使用Amira4.0软件在CBCT影像中分割提取减数双尖牙并测量其体积(volume in amira,Va)。所有的测量均由两名操作者测量两次。采用配对t检验对Vw与Va进行统计学分析,用Pearson相关分析及组内相关系数确定组内及组间的相关性。结果:样本总体平均Vw为(0.553±0.082)cm3,平均Va为(0.548±0.079)cm3[操作者1为(0.529±0.078)cm3,操作者2为(0.567±0.085)cm3],Va与Vw之间差异有统计意义(P<0.05),Va的测量在两个操作者之间差异也有统计学意义(P<0.05),组内与组间相关系数高。Amira软件中表面光滑处理的过程可以损失3%~12%的体积。结论:利用CBCT分割提取双尖牙根是可行的,但分割提取的体积与正常相比有小范围的差异(本研究为-4%~7%),表面处理功能中虽然能美化视觉效果,但有体积的丢失。刘怡 James MAH 许天民 2010北京大学学报(医学版)2010,42,1:7
2液压控制阀安装不当引起液压系统故障分析显示文摘0引言 技术人员在测试锁模力为3680kN的卧式塑料注塑机做出厂试验时,当电磁阀得电时,出现移模油缸向后爬行。经分析判断是由于电液阀的6只紧固螺钉安装不当引起。平时在工作中也时常碰到类似情况,下面就对此现象提出几点改进措施。马海舟 MAH Hai-zhou 2007液压气动与密封2007,27,2:6
3Oily fish, coffee and walnuts: Dietary treatment for nonalcoholic fatty liver disease显示文摘Rates of non-alcoholic fatty liver disease(NAFLD) are increasing worldwide in tandem with the metabolic syndrome, with the progressive form of disease, nonalcoholic steatohepatitis(NASH) likely to become the most common cause of end stage liver disease in the not too distant future. Lifestyle modification and weight loss remain the main focus of management in NAFLD and NASH, however, there has been growing interest in the benefit of specific foods and dietary components on disease progression, with some foods showing protective properties. This article provides an overview of the foods that show the most promise and their potential benefits in NAFLD/NASH, specifically; oily fish/fish oil, coffee, nuts, tea, red wine, avocado and olive oil. Furthermore, it summarises results from animal and human trials and highlights potential areas for future research.Vikas Gupta Xian-Jun Mah Maria Carmela Garcia Christina Antonypillai David van der Poorten 2015World Journal of Gastroenterology2015,21,37:4
4Inheritance patterns of secondary symbionts during sexual reproduction of pea aphid biotypes显示文摘食草的昆虫经常怀有影响他们的生态学和进化的细菌的共生者。蚜虫招待应尽的 endosymbiont Buchnera,它为复制被要求,和其频率越过蚜虫人口变化的容许的共生者。这些似母亲播送了第二等的共生者特别地在豌豆蚜虫被学习了, Acyrthosiphon pisum,哪个港口穿上环境地依赖的效果的至少 8 不同细菌的种类(不数的 Buchnera ) 主人健康。特别地,这些共生者种类与豌豆蚜虫人口在特定的植物上喂被联系。尽管他们是继承的似母亲,这些细菌偶尔越过昆虫系被转移。如此的 nonmaternal 转移的一机制在性复制期间是到子孙的父亲的传播。迄今为止,第二等的共生者的传播在仅仅蚜虫系和 3 共生者种类的一把在蚜虫的性复制期间被调查了。更好描绘这个过程,我们通过包含属于 9 专业化主人的遗传因子型,和 117 个十字的 49 克隆的一个交叉实验在豌豆蚜虫的性复制期间调查了 7 共生者种类的继承模式。在子孙的共生者种类在从鸡蛋并且在以后的单性生殖的代孵化的 fundatrix 阶段与诊断质的 PCR 被检测。我们没发现共生者的父亲的传播的证实的案例到子孙,并且我们观察到特别共生者种(Serratia symbiotica ) 的母亲的传播是相当低效的。我们在尊重讨论这些观察到豌豆蚜虫的生态学。Jean Peccoud Joêl Bonhomme Frédérique Mahéo Manon de la Huerta Olivier Cosson Jean-Christophe Simon 2014Insect Science2014,21,3:4
5大肠杆菌——被低估的肉种鸡病原体显示文摘由于家禽生产采用了集约化饲养方式,同时各国政府正在限制抗生素在养殖场中的使用,因此禽致病性大肠杆菌(AvianPathogenic Escherichiacoli,APEC)对家禽行业的威胁比以往任何时候都大。抗生素对维持动物的健康很重要,但是近年来抗生素耐药性的增多逐渐成为全球性问题,因此抗生素的使用已经受到了严格审查。孟含(译) 夏俊花(校) 马晓迪(制表) 唐彩琰(制图) Choew Kong Mah 2019国外畜牧学(猪与禽)2019,39,9:3
6系统性药物治疗儿童银屑病的安全性显示文摘银屑病是一种常见的慢性炎症性皮肤病。成年人的发病率为2%~3%,其中大约有三分之一的患者在18岁之前发病。在儿童期,该病的发病率呈线性增长。从1970年至2000年,儿童银屑病的发病率增加了一倍多。尽管对许多轻度银屑病患儿而言,局部治疗已足够,但对更多可能影响生活质量的重度或顽固性的银屑病患儿,则往往需要系统性治疗。bronckers imgj seyger mmb west dp lara-corrales i tollefson m tom wl hogeling m belazarian l zachariae c mahé e siegfried e philipp s szalai z vleugels ra holland k murphy r baselga e cordoro k lambert j alexopoulos a mrowietz u kievit w paller as 邓婕(编译) 张锡宝(审校) 2017皮肤性病诊疗学杂志2017,24,5:3
7An ORF2 protein-based ELISA for porcine circovirus type 2 antibodies in post-weaning multisystemic wasting syndrome显示文摘Ph Blanchard D Mahé R Cariolet C Truong M Le Dimna C Arnauld N Rose E Eveno E Albina F Madec A Jestin 2003Veterinary Microbiology2003,,3:2
8Mechanisms of biofilm resistance to antimicrobial agents显示文摘Thien-Fah C Mah George A O’Toole 2001Trends in Microbiology2001,,1:2
9Early dynamic transcriptomic changes during preoperative radiotherapy in patients with rectal cancer: A feasibility study显示文摘AIM: To develop novel biomarkers of rectal radiotherapy, we measured gene expression profiles on biopsies taken before and during preoperative radiotherapy. METHODS: Six patients presenting with a locally advanced rectal cancer (T>T2, N0/Nx, M0) eligible for preoperative radiotherapy (45 Gy in 25 fractions) were selected in a pilot study. Six tumor and 3 normal tissues biopsies were taken before and during radiotherapy,after a dose of 7.2 Gy at a median time of 1 h following irradiation (0:27-2:12). Tumor or normal tissue purity was assessed by a pathologist prior to RNA extraction. Mean RNA content was 23 μg/biopsy (14-37) before radiotherapy and 22.7 μg/biopsy (12-35) during radiotherapy. After RNA amplification, biopsies were analysed with 54K HG-U133A Plus 2.0 Affymetrix expression micro-arrays. Data were normalized according to MAS5 algorithm. A gene expression ratio was calculated as: (gene expression during radiotherapy-gene expression before radiotherapy)/gene expression before radiotherapy. Were selected genes that showed a ratio higher than ± 0.5 in all 6 patients. RESULTS: Microarray analysis showed that preoperative radiotherapy significantly up-regulated 31 genes and down-regulated 6 genes. According to the Gene Ontology project classification, these genes are involved in protein metabolism (ADAMDEC1 ; AKAP7 ; CAPN5 ; CLIC5 ; CPE ; CREB3L1 ; NEDD4L ; RAB27A), ion transport (AKAP7 ; ATP2A3 ; CCL28 ; CLIC5 ; F2RL2 ; NEDD4L ; SLC6A8), transcription (AKAP7 ; CREB3L1 ; ISX ; PAB-PC1L ; TXNIP), signal transduction (CAPN5 ; F2RL2 ; RA- B27A ; TNFRSF11A), cell adhesion (ADAMDEC1 ; PXDN ; SPON1 ; S100A2), immune response (CCL28 ; PXDN ; TNFRSF11A) and apoptosis (ITM2C ; PDCD4 ; PVT1). Up-regulation of 3 genes (CCL28 ; CLIC5 ; PDCD4) was detected by 2 different probes and up-regulation of 2 genes (RAB27A ; TXNIP) by 3 probes. CONCLUSION: Micro-arrays can efficiently assess early transcriptomic changes during preoperative radiotherapy for rectal cancer, and may help better understand tumor radioresistance.Stephane Supiot Wilfried Gouraud Loc Campion Pascal Jezéquel Bruno Buecher Josiane Charrier Marie-Francoise Heymann Marc-Andre Mahé Emmanuel Rio Michel Chérel 2013World Journal of Gastroenterology2013,19,21:2
10Thermal stability of SiC fibers (Nicalon) 显示文摘MAH T HECHT N L CULLUM D E Mc 1984J Mater Sci1984,19,4:2
11Clinacanthus nutans Extracts Are Antioxidant with Antiproliferative Effect on Cultured Human Cancer Cell Lines显示文摘Yoke Keong Yong Jun Jie Tan Soek Sin Teh Siau Hui Mah Gwendoline Cheng Lian Ee Hoe Siong Chiong Zuraini Ahmad José Luis Ríos 2013Evidence-Based Complementary and Alternative Medicine2013,,:2
12Usefulness of computed tomography based three-dimensional reconstructions to assess the critical shoulder angle显示文摘BACKGROUND The critical shoulder angle(CSA)is a radiographic measurement that provides an assessment of both glenoid inclination and acromial length.Higher values may correlate with the presence of rotator cuff tears.However,it is difficult to obtain a high-quality true anteroposterior(AP)radiograph of the shoulder,with any excess scapular version or flexion/extension resulting in deviation from the true CSA value.Three-dimensional(3D)bony reconstructions of computed tomography(CT)shoulder scans may be able to be rotated to obtain a similar view to that of true AP radiographs.AIM To compare CSA measurements performed on 3D bony CT reconstructions,with those on corresponding true AP radiographs.METHODS CT shoulder scans were matched with true AP radiographs that were classified as either Suter-Henninger type A or C quality.3D bony reconstructions were segmented from the CT scans,and rotated to replicate an ideal true AP view.Two observers performed CSA measurements using both CT and radiographic images.Measurements were repeated after a one week interval.Reliability was assessed using intraclass correlation coefficients(ICCs)and Bland-Altman plots[bias,limits of agreement(LOA)].RESULTS Twenty CT shoulder scans were matched.The mean CSA values were 32.55°(±4.26°)with radiographs and 29.82°(±3.49°)with the CT-based method[mean difference 2.73°(±2.86°);P<0.001;bias+2.73°;LOA-2.17°to+7.63°].There was a strong correlation between the two methods(r=0.748;P<0.001).Intra-observer reliability was similar,but the best intra-observer values were achieved by the most experienced observer using the CT-based method[ICC:0.983(0.958-0.993);bias+0.03°,LOA-1.28°to+1.34°].Inter-observer reliability was better with the CT-based method[ICC:0.897(0.758-0.958),bias+0.24°,LOA-2.93°to+3.41°].CONCLUSION The described CT-based method may be a suitable alternative for critical shoulder angle measurement,as it overcomes the difficulty in obtaining a true AP radiographic view.Dominic Mah Uphar Chamoli Geoffrey CS Smith 2021World Journal of Orthopedics2021,12,5:2
13Biogenic amine formation and bacterial contribution in fish, squid and shellfish显示文摘Min-Ki Kim Jae-Hyung Mah Han-Joon Hwang 2009Food Chemistry2009,,1:2
14Institutional Changes and Antidumping Decisions in the United States 显示文摘Lee Kyung--Ho and Mah JaiS 2003Journal of Policy Modeling2003,,25:1
15Neo-clerodane diterpenoids and other constituents from Baccharis species 显示文摘Faini F Rivera P Mah M 1987Phytochemistry1987,26,:1
16Nonlinear partial least squares显示文摘 TAMHANE A C MAH R S H 1997Computers Chemical Engineering1997,21,8:1
17Hyperprolactinemia: ectiology, diagnosis and management 显示文摘Mah PM Wedster J 2002Semin Reprod Med2002,20,4:1
18Cardiac calcification in renal patients: What we do and don't know显示文摘Nabil MAH Behdad A David JAG 2004Am J Kidney Dis2004,43,:1
19Antidumping decisions and macroeconomic variables in the USA显示文摘Mah Jai 2000Applied Economics2000,32,:1
20Selected SALM(synaptic adhesionlike molecule)family proteins regulate formation显示文摘Mah W Ko J Nam J 2010J Neurosci2010,30,16:1
返回顶部 每页显示:
共57页 首页 上一页 第1页 下一页 末页 /57 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费