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    题名 作者 年代 出处 被引量
1五轴数控机床空间误差测量、建模与补偿技术研究显示文摘五轴机床相比于三轴机床,它能加工各种复杂表面,具有更高的生产效率、更好的灵活性和更少的装夹时间。然而,两个旋转轴引入了更多的几何误差,譬如旋转轴轴线的位置误差和平行度误差等,导致了五轴机床有较大的空间误差。本研究旨在首先测量和辨识五轴机床平动轴和旋转轴的所有41项几何误差元素,然后对机床的空间误差建立数学模型,最后对机床的空间误差进行补偿,从而提高机床的整体精度。项四通 杨建国 Yusuf Altintas 杜正春 2018机械工程学报2018,54,4:5
2Short-term effects of intravitreal triamcinolone acetonide injection on ocular blood flow evaluated with color Doppler ultrasonography显示文摘AIM:To evaluate the changes in ocular blood flow with color Doppler ultrasonography(CDU) after intravitreal triamcinolone acetonide(IVTA) injection.METHODS:A total of 46 patients who underwent IVTA(4 mg/0.1 mL) injection for diabetic macular edema(DME)(n =22), central retinal vein occlusion(CRVO)(n =12) and choroidal neovascular membrane(CNVM)(n =12) were included in the study. Peak systolic velocity(PSV), end diastolic velocity(EDV) and resistivity index(RI) were measured from the ophthalmic artery(OA), the central retinal artery(CRA) and the posterior ciliary artery(PCA)of each patient with CDU before, at the end of the first week and at the end of the first month following IVTA injection.RESULTS:In the DME group, PSV of OA at the first of the first month(mean ±SD)(37.48 ±10.87 cm/s) increased compared to pre-injection value(31.39 ±10.84 cm/s)(P =0.048). There was a statistically significant decrease(P =0.049) in PSV of CRA at the end of the first month(7.97±2.67 cm/s) compared to the pre-injection(9.47±3.37 cm/s).There was not any statistically significant difference onthe other parameters in the DME group. Also, there was not any statistically significant difference on the ocular blood flow values in the CRVO and CNVM groups.CONCLUSION:We observed that 4 mg/0.1 mL IVTA increased PSV of OA and decreased PSV of CRA in DME patients and did not have any effect on ocular blood flow values of CRVO and CNVM patients.Mustafa Alpaslan Anayol Yasin Toklu Elif Asik Kamberoglu Sabri Raza Hasan Basri Arifoglu Huseyin Simavli Ayse Gul Kocak Altintas Saban Simsek 2014International Journal of Ophthalmology(English edition)2014,7,5:4
3Effectivity of intraoperative adjustable suture technique in horizontal strabismus显示文摘AIM:To compare the long-term effectivity of intraoperative adjustable suture technique with traditional non-adjustable strabismus surgery.·METHODS:Two hundred and thirty-three patients,who underwent strabismus surgery either with traditional procedures or one-stage intraoperative adjustable suture technique,were included in our long-term follow-up study.One hundred and eighteen patients were evaluated in traditional surgery group(TSG) and 115 who underwent adjustable suture were in the one-stage intraoperative adjustable surgery group(ASG).In this group 9 patients had paralytic strabismus and 16 had reoperations,2 patients had restrictive strabismus related to thyroid eye disease.The mean follow up in the TSG was 26.2 months and it was 24.8 months in the ASG group.·RESULTS:In patients with exotropia(XT) the mean correction of deviation for near fixation in ASG(32.4 ±13.2PD) and in TSG(26.4±8.2PD) were similar(P =0.112).The correction for distant fixation in ASG(33.2±11.4PD)and TSG(30.9±7.2PD) were not significantly different(P =0.321).In patients with esotropia(ET) even the mean correction of deviation for both near(31 ±12PD) and distant(30.6±12.8PD) fixations were higher in ASG thanin TSG,for both near(28.27±14.2PD) and distant(28.9±12.9PD) fixations,the differences were not significant(P =0.346,0.824 respectively).The overall success rate of XT patient was 78.9% in TSG and 78.78% in ASG,the difference was not significant(P =0.629).The success rates were 78.75% in TSG and 75.51% in ASG in ET patient,which was also not significantly different(P =0.821).·CONCLUSION:Although patients in ASG had more complex deviation such as paralysis,reoperations and restrictive strabismus,success rates of this tecnique was as high as TSG which did not contain complicated deviation.One-stage intraoperative adjustable suture technique is a safe and effective method for cooperative patient who has complex deviation.Ayse Gul Kocak Altintas Hasan Basri Arifoglu Inci Kocak Midillioglu Elif Damar Gungor Saban Simsek 2013International Journal of Ophthalmology(English edition)2013,6,4:3
4五轴数控机床的运动控制建模及精度提高方法研究显示文摘本文以五轴数控加工的运动控制建模及精度提高为主线,围绕运动学建模、刀具路径生成、轮廓误差的估算和控制、机床几何误差的辨识和补偿等问题展开了系列研究,主要内容与贡献包括:杨吉祥 陈幼平(指导) yusuf altintas(指导) 2017金属加工(冷加工)2017,0,11:2
5Neural invasion in pancreatic cancer: A mutual tropism between neurons and cancer cells显示文摘Güralp O. Ceyhan Ihsan Ekin Demir Burak Altintas Ulrich Rauch Gerald Thiel Michael W. Müller Nathalia A. Giese Helmut Friess Karl-Herbert Sch?fer 2008Biochemical and Biophysical Research Communications2008,,3:2
6Profiles of serum microRNAs; miR-125b-5p and miR223-3p serve as novel biomarkers for HBV-positive hepatocellular carcinoma显示文摘Burcu Gurer Giray Gurol Emekdas Seda Tezcan Mahmut Ulger Mehmet Sami Serin Orhan Sezgin Engin Altintas Eyup Naci Tiftik 2014Molecular Biology Reports2014,,7:2
7高度近视伴色觉缺失的家系分析(英文)显示文摘目的:评估高度近视伴色觉缺失患者的遗传学特征和临床表现方法:就同一家族4代42个成员中有8位患者给予了详细的眼科检查,Ishihara盘和FM100H试验检测患者有无红绿色觉缺失,全视野视网膜电图评价其视网膜功能。结果:患者8位均因高度近视视力下降,其中6例有红绿色觉缺失,眼底检查显示以弥漫性视网膜脉络膜萎缩为特征的近视改变。2例患者ERG检查出现视杆细胞的暗适应异常和视锥细胞的反应消失,根据家系,红绿色觉缺失属X连锁的隐性遗传。结论:在这个家族成员中,同时发生的高度近视和色觉缺失可能有共同的遗传学基础。Nimet nay Gündogan Ay■e Gül Koak Altinta■ Nezih Durmazlar Koray Gümüs Zerrin Yilmaz Kemal Ksemehmetoglu 2007国际眼科杂志2007,7,3:2
8Relation of eye dominancy with color vision discrimination performance ability in normal subjects显示文摘AIM:To evaluate the performance of dominant eye(DE) for color vision discrimination ability among the medical students with normal color vision.METHODS:Total of 50 students studying at Baskent University Faculty of Medicine,including 31 males(62%) and 19 females(38%),with visual acuity of 20/20 and without congenital color vision deficiency(CCVD) evaluated by Ishihara pseudoisochromatic plate test(IPPT) were recruited for this prospective comparative study upon their voluntary participation.DE was determined by the Gündogan Method.The color discrimination ability was examined with the FarnsworthMunsell 100 hue(FM100) test.Test was applied by two days interval to all subjects for the three times while two eyes(TE),right eye(RE) and left eye(LE) were seeing for detecting red-green(r/g),blue-yellow(b/y) local color spectral regions error scores.The error scores were evaluated for both in DE and non-dominant(NDE).P values below 0.05 were considered to be statistically significant.RESULTS:The students aged 21.18±2.52 years(mean±SD).Without sex difference the RE and the LE dominancy were found 22(44%) and 28(56%) respectively and FM 100 test total error scores of DE in both r/g-b/y regions were found without gender difference 24.12±14.70,34.68±18.95,respectively.For the NDE in both,r/gb/y regions error scores without gender difference were 32.20±19.21,36.24±17.56,respectively.The difference of total error scores between the DE and NDE was found as 58.80±29.92,68.44±31.46.The statistical differences among the DE and the NDE in r/g local region and total error scores were found significant in both genders(P<0.05,P<0.001). CONCLUSION:The color vision discrimination performance ability was found prominent for DE.This superiority was attributed to higher sensitivity of the r/g local color spectral region.We conclude that DE has priority in r/g color spectral region,probably including inhibition of NDE.Belkis Koctekin Nimet ünay Gündogan Ays Gül Kocak Altintas Ayse Canan Yazici 2013International Journal of Ophthalmology(English edition)2013,6,5:2
9基于PC/DSP的开放系统结构智能切削模块显示文摘研究了采用PC微机和数字信号处理器 (DSP)板构成实时开放系统结构智能切削模块 (OSA IMM)的体系结构和功能要求 ,以及实现开放系统结构设计的关键问题 .采用信号处理网络、可重入的插入式模块、描述命令文件以及面向切削过程智能化控制的标准函数库等 ,实现了系统的开放性和智能化 .以OSA IMM构成了车削过程自适应控制系统和基于人工神经网络的车刀后刀面磨损值在线估计系统 .实验表明 ,OSA IMM具有良好的开放系统结构和强大的实时处理能力 ,并有智能计算能力 ,在该平台上 ,可以方便地配置成适用于切削加工过程不同要求的控制刘强 Yusuf Altintas 2000北京航空航天大学学报2000,26,2:2
10五轴数控机床空间误差测量、建模与补偿技术研究显示文摘五轴机床相比于三轴机床,它能加工各种复杂表面,具有更高的生产效率、更好的灵活性和更少的装夹时间,广泛应用于航空航天、汽车和模具等行业。然而,两个旋转轴引入了更多的几何误差,导致了五轴机床有较大的空间误差。本论文以五轴机床误差测量-建模-补偿一体化为主线,提出了旋转轴误差的辨识新方法、建立了适用于多种结构五轴机床的空间误差统一模型,给出了基于螺旋理论的空间误差补偿方法,具体研究内容与贡献包括:(1)提出了基于球杆仪的五轴机床旋转轴误差的高效高精度低成本测量方法。项四通 杨建国 Yusuf Altintas 杜正春 2018金属加工(冷加工)2018,0,8:2
11白内障超声乳化术后前房膜形成的危险因素(英文)显示文摘目的:探讨白内障超声乳化术后前房膜形成的危险因素。方法:对1356例行白内障超声乳化+单片式PMMA人工晶体植入术患者进行前瞻性研究。假性囊膜剥脱综合症,核硬度,瞳孔大小,超声时间,实际超声时间,系统性疾病,术中并发症(囊膜撕裂,悬韧带断裂,后囊破裂伴玻璃体丢失),IOL植入位置和术后并发症(眼内压变化,粘连形成)作为膜形成的危险因素分析。结果:观察到111例患者(8.1%)术后出现伴有膜形成的纤维素性前葡萄膜炎。膜形成平均时间是术后第2d(术后第1~7d),膜存在持续时间平均为5.2d(1~48d)。在膜形成病例中,+4级核病例占45%,而在无膜形成病例中仅为13.5%,差异具有显著统计学意义(P<0.05)。在膜形成组,平均超声时间为2.4min,平均实际超声时间为32.8s,而无膜形成组分别为1.8min和22.1s。这两项参数在膜形成组均明显较长(P<0.05)。在膜形成组中,出现后囊破裂伴玻璃体丢失和IOL睫状沟植入者占33%,而无膜形成组为11%(P<0.05)。其他危险因素在膜形成组和无膜形成组中的比较无统计学意义。在术后第1d和第7d,平均最佳矫正视力(Snellen视力表)在膜形成组分别为0.2和0.4,无膜形成组为0.4和0.6(P<0.05)。但术后3mo,平均最佳矫正视力在膜形成组和无膜形成组中结果相似(分别为0.8和0.9)。结论:晶状体核硬度较高,较长超声时间和实际超声时间,术中后囊破裂是术后前房纤维膜形成的明显相关性危险因素。Ayse Gul Kocak Altintas M. Alpaslan Anayol Saban Simsek 2006国际眼科杂志2006,6,6:2
12一种新的计算机适应色觉试验(英文)显示文摘目的:提出一种新的计算机适应色觉试验(NCACVT)并且解释它在实际应用中的可靠性和重要性。方法:法-孟二式100色度试验(FM100HT)和Holmgren试验已经被改良并且适应计算机应用。经典的Ishihara假同色法试验方法(IPPT)已被假定是色盲的一个简便的筛选检查工具;因此依照Ishihara试验结果,受试者被分为色觉有缺陷组(第1组)和对照组(第2组)。第1组为色觉有缺陷者13例(男12例,女1例),年龄在19~29(平均21)岁,而第2组为对照组,13个受试者色觉无缺陷(男8例,女5例),年龄在19~28(平均22)岁。为了研究两组人的色觉敏感性,所有的受试者都要进行FM100HT和NCACVT试验。将经典的IPPT,FM100HT和NCACVT的试验结果用统计学方法进行比较。在这两组中NCACVT和FM100HT的误差计分用秩和检验来分析。结果:在误差计分中的差别分别在统计学上是有显著意义的(U=169,P<0.05;U=153P<0.05)。根据NCACVT来诊断色觉缺陷的临界点是通过使用接受机器作特征曲线(ROC)而被发现是23。根据23这个临界点的误差计分,在筛选检查色觉缺陷方面,发现NCACVT具有100%的敏感性和100%的特异性。结论:根据Harper和Reeves,这些特点使得这个试验成为一个可靠的、有创意的眼科实践筛选试验。Nimet ünay Gündogan Nezih Durmazlar Aysegül Kocak Altintas Koray Gümüs 2007国际眼科杂志2007,7,2:2
13Chatter Stability of Milling in Frequency and Discrete Time Domain 显示文摘ALTINTAS Y STEPAN G MERDOL D 2008CIRP Journal of Manufacturing Science and Technology2008,1,1:1
14Lanfivudine for the prevention of hepatitis B virus reactivation in hepatitis-B surface antigen(HBSAG) seropositive cancer patients undergoing cytotoxic chemotherapy显示文摘Cil T Altintas A Pasa S 2008Leuk Lymphoma2008,49,5:1
15Simulation of the orthogonal metal cutting process using an arbitrary Lagrangian-Eulerian Finite-element method 显示文摘Movahhedy M Gadala M S Altintas Y 2000Journal of Materials Processing Technology2000,103,:1
16Identification of dynamic cutting force coefficients and chatter stability with process damping显示文摘Altintas Y Eynian M Onozuka H 0,,:1
17Giant cardiac lipoma: report of a case显示文摘Bardakci H Altintas G Unal U 2008J Card Surg2008,23,3:1
18Machine tool spindle units 显示文摘Abele E Altintas Y Brecher C 2010CIRP Annals-Manufacturing Technology2010,59,2:1
19Comparison of results aider fluoroquinolones and combination therapies in type ilia chronic prostatitis 显示文摘Altintas R Oguz F Beytur A 2013Actas Urol6 gicas Espalolas (English Edition)2013,37,10:1
20Time domain model of plunge milling operation 显示文摘Ko J H Altintas Y 2007International Journal of Machine Tools and Manufacture2007,47,9:1
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