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| 1 | 水平管内水环输送模拟稠油减阻特性显示文摘基于自主设计加工并搭建的水环输送稠油减阻模拟管路系统,采用500#白油模拟稠油,试验研究了稠油在水环作用下的水平管流阻力特性,分析了油相表观流速(0.3~1.0m/s)、水相表观流速(0.11~0.72m/s)及入口含水率(0.13~0.49)对水润滑管流流型特征及减阻效果的影响。结果表明:环状水膜可有效隔离并润滑油壁界面,油-水两相流流型总体上呈稳定的偏心环状流结构;水环输送可大幅降低管道输送过程中的压降,其压降值仅为相同油流量下纯油输送压降的1/55~1/27;当入口含水率为0.13~0.27时,水环输送的效能显著,输油效率均高于40;油相表观流速和入口含水率的增加会增大单位管长压降,降低水环输送的减阻效果和输油效能。 | 敬加强 尹晓云 MASTOBAEV Boris N VALEEV Anvar R 孙杰 王思汗 刘华平 庄乐泉 范峥嵘 | 2021 | 化工进展2021,40,2: | 9 |
| 2 | High-aspect 3D two-photon polymerization structuring with widened objective working range (WOW-2PP)显示文摘We developed a novel two-photon polymerization(2PP)configuration for fabrication of high-aspect three-dimensional(3D)structures,with an overall height larger than working distance of the microscope objective used for laser beam focusing into a photosensitive material.This method is based on a modified optical 2PP setup,where a microscope objective(1003 high N.A.),immersion oil and cover glass can be moved together into the photosensitive material,resulting in an effective higher and wider objective working range(WOW-2PP).The proposed technique enables the fabrication of high-aspect structures with sub-micrometer process resolution.3D structures with a height of 7 mm are demonstrated,which could hardly be built with the conventional 2PP set-up due to refractive index mismatch and laser beam disturbances. | Kotaro Obata Ayman El-Tamer Lothar Koch Ulf Hinze Boris N Chichkov | 2013 | Light(Science & Applications)2013,2,1: | 7 |
| 3 | Prevalence of vacA, cagA and babA2 genes in Cuban Helicobacter pylori isolates显示文摘AIM: To investigate the prevalence of vacuolating cytotoxin (vacA), cytotoxin associated gene A (cagA) and blood adhesion binding antigen (babA2) genotypes of Helicobacter pylori (H pylori) isolates from Cuban dyspeptic patients. METHODS: DNA was extracted from H pylori-positive cultures taken from 130 dyspeptic patients. Genotyping was performed by PCR, using specifi c primers for vacA (s1, s2, m1, m2), cagA and babA2 genes. Endoscopic observations and histological examinations were used to determine patient pathologies. RESULTS: vacA alleles s1 , s2 , m1 and m2 were detected in 96 (73.8%), 34 (26.2%), 75 (57.7%) and 52 isolates (40%), respectively, while the cagA gene was detected in 95 isolates (73.2%). One hundred and seven isolates (82.3%) were babA2-positive. A signif icant correlation was observed between vacAs1m1 and cagA and between vacAs1m1 and babA2 genotypes (P < 0.001 and P < 0.05, respectively) and between babA2 genotype and cagA status (P < 0.05); but, no correlation was observed between vacAs1 and babA2 genotypes. Eighty fi ve (65.4%) and 73 (56.2%) strains were type 1 (vacAs1-cagA-positive) and 'triple- positive' (vacAs1-cagA-babA2-positive), respectively, and their presence was significantly associated with duodenal ulcer (P < 0.01 and P < 0.001, respectively). CONCLUSION: The distribution of the main virulence factors in the Cuban strains in this study resembled that of the Western-type strains, and the more virulent H pylori isolates were signifi cantly associated with duodenal ulcer, ulcer disease being the worst pathology observed in the group studied. | Lino E Torres Karelia Melián Arlenis Moreno Jordis Alonso Carlos A Sabatier Mayrín Hernández Ludisleydis Bermúdez Boris L Rodríguez | 2009 | World Journal of Gastroenterology2009,15,2: | 4 |
| 4 | 管材特性对黏稠油水环输送稳定性的影响分析显示文摘针对水环输送稠油过程中不能一直保持环状流动形态的问题,基于VOF两相流模型、标准k-ε湍流模型及CSF表面张力模型,对油水环状流在水平管中的流动情况进行了模拟分析。应用控制变量法分析管壁粗糙度与静态接触角对水环稳定性的影响,通过油水两相体积分数分布特征、轴向速度分布特点、管道沿线压力变化特性等指标综合评价水环稳定性的强弱。结果表明:随流动时间和运行距离的增长,油水环状流经历了同心环状流-偏心环状流-不完全环状流-分层流的演变过程。随管壁粗糙度的增大和静态接触角的减小,水环维持稳定流动的距离增长,管道沿线的总压降减小。管壁粗糙度对轴向速度分布和油核偏心率基本没有影响,不同管壁粗糙度下轴向速度均呈对称状分布,油核偏心率均约为0.73;而静态接触角对轴向速度分布和油核偏心率有较大影响,随静态接触角的增加,速度分布由对称状分布转变为舌头状分布,油核偏心率由0.73上升到1.0。截面持油率不随管壁粗糙度与静态接触角的变化而变化,不同模拟条件下均约为0.74。因此在实际输送过程中,可对现场使用的管材进行内表面改性处理,适当增大管壁粗糙度和减小静态接触角,以提高黏稠油水环输送的稳定性。 | 李鹏 尹晓云 杨思远 胡可 邓小娇 刘少钧 MASTOBAEV Boris N | 2022 | 流体机械2022,50,5: | 3 |
| 5 | 采用椭圆形非骨水泥压配固定髋臼杯行全髋关节置换术治疗髋关节发育不良显示文摘对继发于髋关节发育不良的晚期骨性关节炎患者来说,全髋关节置换术是较好的治疗选择,但由于此类患者存在的解剖结构异常,手术变得较为复杂。在分型为HartofilakidisⅡ型的患者中,股骨头的半脱位造成髋臼顶部外上方的骨缺损,往往需要某种形式的支撑来使髋臼杯获得稳定的固定。处理这种类型的骨缺损可以采用多种不同的方法,孰优孰劣尚有争议。本文的目的是通过回顾性分析比较两种不同的骨缺损处理方法,来探讨椭圆形非骨水泥髋臼杯是否可以作为传统处理方法的替代方法。 | 王俏杰 张先龙 Boris M.Holzapfel Felix Greimel Peter M.Prodinger Hakan Pilge Ulrich Nth Hans Gollwitzer Maximilian Rudert | 2012 | 中国矫形外科杂志2012,20,17: | 3 |
| 6 | Phytoremediation of Metal-Polluted Soils by Arbuscular Mycorrhizal Fungi显示文摘 | Sebastián Meier Fernando Borie Nanthi Bolan Pablo Cornejo | 2012 | Critical Reviews in Environmental Science and Technology2012,,7: | 2 |
| 7 | Autologous nonmyeloablative hematopoietic stem cell transplantation in newly diagnosed type 1 diabetes mellitus显示文摘 | Voharelli JC Couri EB Boris N | | 0,,: | 1 |
| 8 | Synthesis of mono-and N,N-disubstituted thioureas and N-acylthioureas显示文摘 | Katritzky A R Kirichenko N Rogovoy Boris V | 2004 | Synthesis2004,,11: | 1 |
| 9 | Efficiency of ultrasonic Ver- tex III hypsometer compared to the most commonly used hypsome- ters in Croatian forestry显示文摘 | Boris M Cavlovic J Lukic N | 2005 | Croatian Journal of Forest Engineer* ing2005,26,2: | 1 |
| 10 | Cellular information transfer regarded from a stoichiometry and control analysis perspective显示文摘 | Boris N Kholodenko | 2000 | BioSystems2000,55,: | 1 |
| 11 | A novel melanin-like pigment derived from black tea leaves with immunostimulating activity 显示文摘 | Vasyl M Sava Boris N Galkin Meng-Yen Hong | 2001 | Food Research International2001,34,4: | 1 |
| 12 | Lyso-thermosensitive liposomal doxorubi- cin: a novel approach to enhance efficacy of thermal ablation of liver cancer显示文摘 | POON RT BORYS N | 2009 | Expert Opin Pharmacother2009,10,2: | 1 |
| 13 | Homogeneous enzyme immunoassay for pyrethroid pesticides and their derivatives using bacillary alpha-amylase as label 显示文摘 | Boris B D Janna N T | 1997 | Analytica Chimica Acta1997,347,: | 1 |
| 14 | Microbiological decontamination of botanical raw materials and corresponding pharmaceutical products by irradiation 显示文摘 | Branka K R Boris N Dusan R | 2001 | Radiation Physics and Chemistry2001,62,: | 1 |
| 15 | Lyso-thermosensitive liposomal doxorubi cin:anovel approach to enhance efficacy of thermal ablation of liver caneer显示文摘 | Poon RT Borys N | 2009 | Expert Opin Pharmacother2009,10,2: | 1 |
| 16 | Met al-coded affinity tag labeling: A demonstration of analytical robustness and suitability for biological applications显示文摘 | ROBERT A STEFAN P BORIS N | 2009 | Anal Chem2009,81,6: | 1 |
| 17 | Are leaders portable? 显示文摘 | Groysberg Boris McLean Andrew N and Nohria Nitin N | 2006 | Harvard Business Review2006,84,5: | 1 |
| 18 | Lyso-thermosensitive liposomal doxorubi- cin: a novel approach to enhance efficacy of thermal ablation of liver cancer显示文摘 | Poon RT Borys N | 2009 | Expert Opin Pharmacother2009,10,: | 1 |
| 19 | Asymmetric reduction of (4R)-(-)-carvone catalyzed by baker's yeast in aqueous mono- and biphasic systems显示文摘 | VANESSA D S BORIS U S MARIA DA G N | 2012 | J Mol Catal B Enzym2012,77,: | 1 |
| 20 | Long-term exercise treatment reduces oxidative stress in the hippocampus of aging rats显示文摘 | Marosi K Bori Z Hart N | 2012 | Neuroscience2012,226,: | 1 |