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撕囊术的重新评价:撕囊术中的撕裂角度(英文)

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国际眼科杂志 2007年第2期7卷 315-318页

作者： Mohammad Taher rajabi Ali Sadeghi Tari Mahmood Jabbarvand Mohammad Bagher rajabi 伊朗德黑兰大学眼科研究中心Farabi眼科医院

目的:针对不同材料及连续环形撕囊术中人晶状体囊,测量其撕裂角度和力度,并评价所产生的压力。方法:通过用钝针头撕裂不同的材料,例如铝薄纸、多种薄层移植修复材料以及人晶状体囊,测量撕裂角度和作用力方向,评价在此过程中上述可撕裂... 详细信息

目的:针对不同材料及连续环形撕囊术中人晶状体囊,测量其撕裂角度和力度,并评价所产生的压力。方法:通过用钝针头撕裂不同的材料,例如铝薄纸、多种薄层移植修复材料以及人晶状体囊,测量撕裂角度和作用力方向,评价在此过程中上述可撕裂材料表面所潜在增加的压力,以及在不同年龄(10～17岁)24只尸体眼中对前房深度和玻璃体压力所产生的影响。结果:每种材料所产生的撕裂角度是唯一的,随着年龄的增长其撕裂角度和力度反而降低(从10岁的85°到50岁以上的10°)。增加的玻璃体压力和降低的前房深度导致了撕裂点的高压力。在本文中讨论了连续环形撕囊术中安全的手术方法。结论:在连续环形撕囊术中理解力的矢量和物理过程,这对于良好的操作和避免放射状撕裂是必要的。在连续环形撕囊术中应该要考虑到不同年龄和不同类型白内障的晶状体囊性质的改变会导致不同的撕裂角度和力度。

关键词：连续环形撕囊术撕裂撕裂角晶状体囊晶状体囊切开术

临床表现似视网膜母细胞瘤的脉络膜黑色素细胞瘤1例(英文)

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国际眼科杂志 2009年第2期9卷 220-222页

作者： Mohammad Taher rajabi Fahimeh Asadi Amoli Narghes Zandevakil Seyed Hesam Hashemian Mohammad Bagher rajabi 德黑兰大学医学院眼科德黑兰大学医学院病理科

我们报道罕见的脉络膜黑色素细胞瘤1例,以视网膜母细胞瘤之诊断行眼球内容物剜除术。患儿14mo,以左眼外斜视约10mo主诉就诊。眼科检查及影像学检查显示视网膜脱离并钙化病灶。患儿诊断为视网膜母细胞瘤,患眼行眼球内容物剜除术。组织病... 详细信息

我们报道罕见的脉络膜黑色素细胞瘤1例,以视网膜母细胞瘤之诊断行眼球内容物剜除术。患儿14mo,以左眼外斜视约10mo主诉就诊。眼科检查及影像学检查显示视网膜脱离并钙化病灶。患儿诊断为视网膜母细胞瘤,患眼行眼球内容物剜除术。组织病理学检查显示肿瘤细胞体积大,多面体型,核小,胞浆含大量黑色素颗粒,提示脉络膜及睫状体黑素细胞瘤之诊断。以往有脉络膜及睫状体黑色素细胞瘤表现类似与恶性黑素瘤的报道,但是,黑色素细胞瘤表现为钙化病灶及视网膜脱离,被误诊为视网膜母细胞瘤,此病例罕见,以往未见报道。

关键词：脉络膜黑色素细胞瘤视网膜母细胞瘤

移动气泡征在深板层角膜移植术中的应用(英文)

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国际眼科杂志 2011年第3期11卷 388-389页

作者： Sasan Niknam Mohammad Taher rajabi V. Vinood Mootha Seyed Sahaboddin Shahrzad Mohammad Bagher rajabi Dr Kho1atoust眼科医院伊朗设拉子德黑兰医科大学Farabi医院眼科眼科研究中心伊朗德黑兰西南医学院眼科美国德克萨斯州达拉斯市设拉子医科大学眼科伊朗设拉子

我们报道了移动气泡征在深板层角膜移植术(deep anterior lamellar keratoplasty,DALK)中的应用。这一体征见于99%以上的患者。有晶状体的圆锥角膜是DALK最主要的适应证,这一体征对这类患者非常有用。我们认为对手术方法的小改进将帮助... 详细信息

我们报道了移动气泡征在深板层角膜移植术(deep anterior lamellar keratoplasty,DALK)中的应用。这一体征见于99%以上的患者。有晶状体的圆锥角膜是DALK最主要的适应证,这一体征对这类患者非常有用。我们认为对手术方法的小改进将帮助医师缩短此类手术的学习过程,避免前房穿透在手术最后阶段的发生。

关键词：移动气泡征深板层角膜移值术应用

传统与欠矫手术治疗部分调节性内斜视的比较(英文)

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国际眼科杂志 2008年第3期8卷 460-462页

作者： Gholamreza Khataminia Ziaeddin Yazdian Mohammad Taher rajabi Ahvaz大学医学院眼科伊朗德黑兰市德黑兰大学医学院眼科

目的:评估传统与欠矫手术治疗部分调节性内斜视患者的效果。方法:将25例具有部分调节性内斜视和正常AC/A的患者随机分为两组,其中13例患者接受传统手术治疗,其余12例患者接受欠矫手术治疗。传统手术是基于远距远视完全矫正所测量的偏差... 详细信息

目的:评估传统与欠矫手术治疗部分调节性内斜视患者的效果。方法:将25例具有部分调节性内斜视和正常AC/A的患者随机分为两组,其中13例患者接受传统手术治疗,其余12例患者接受欠矫手术治疗。传统手术是基于远距远视完全矫正所测量的偏差上,而欠矫手术比传统手术标准低20%。所有患者均进行对称性双眼内直肌后退术,术后随访6mo。结果:术后6mo,传统组与欠矫组手术成功率分别为46%和91%(成功标准定义为通过近距和远距远视的完全矫正斜视≤8△)。传统组和欠矫组的手术过矫率分别为54%和9%,两组间差异有统计学意义(P<0.05)。没有残余内斜视。手术成功率或欠矫率与患者的年龄、术前等效球镜均值、术前眼偏斜量无相关性。结论:对于具有正常AC/A的部分调节性内斜视患者,欠矫的双眼内直肌后退术成功率较高,过矫率较低。

关键词：部分调节性内斜视调节性内斜视过矫欠矫

近视眼准分子激光角膜切削术后的对比敏感度评价(英文)

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国际眼科杂志 2007年第4期7卷 914-917页

作者： Mahmoud Jabbarvand Javad Bakhshi Mohammad Taher rajabi 伊朗德黑兰大学眼科研究中心Farabi眼科医院

目的:评价近视患者PRK术后的对比敏感度变化。方法:应用CSV-1000E图表对41例接受NidekEC-5000型准分子激光仪行PRK手术的患者,行单眼对比敏感度测量。患者术前平均屈光度为-2.62±1.33D(范围从-0.75至-4.00D)。应用CSV-1000E对比敏感度... 详细信息

目的:评价近视患者PRK术后的对比敏感度变化。方法:应用CSV-1000E图表对41例接受NidekEC-5000型准分子激光仪行PRK手术的患者,行单眼对比敏感度测量。患者术前平均屈光度为-2.62±1.33D(范围从-0.75至-4.00D)。应用CSV-1000E对比敏感度仪分别在术前,术后1wk;1,3,6mo行对比敏感度检查。结果:将每个空间频率的对比敏感度对数值进行统计学分析,并应用图表与正常值进行比较。结果显示对比敏感度在术后1wk及术后1mo时明显降低,从第1mo开始,对比敏感度尤其是低空间频率的对比敏感度快速恢复,在第3mo,只有6和12cpd两种空间频率的对比敏感度明显降低,在术后6mo时,所有频率的对比敏感度功能都明显增加。结论:PRK术后患者第1mo对比敏感度功能明显降低,但在术后6mo时对比敏感度功能即恢复至术前水平。

关键词：对比敏感度准分子激光近视光学屈光性角膜切削术

Microstructural evolution of Al-20Si-5Fe alloy during rapid solidification and hot consolidation

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Rare Metals 2009年第6期28卷 639-645页

作者： M.rajabi M.Vahidi A.Simchi P.Davami Department of Materials Science and Engineering Sharif University of Technology Institute for Nanoscience and Nanotechnology (INST) Sharif University of Technology

Al-20Si-5Fe melt was rapidly solidified into particles and ribbons and then consolidated to near full density by hot pressing at 400℃/250 MPa/1 h. According to the eutectic-growth and dendritic-growth velocity models, the solidification front velocity and the amount of undercooling were estimated for the particles with different sizes. Values of 0.43-1.2 cm/s and 15-28 K were obtained. The secondary dendrite arm spacing revealed a cooling rate of 6 × 10^5 K/s for the particles with an average size of 20 μm. Solidification models for the ribbons yielded a cooling rate of 5 × 10^7 K/s. As a result of the higher cooling rate, the melt-spun ribbons exhibited considerable microstructural refinement and modification. The size of the primary silicon decreased from approximately 1μm to 30 nm while the formation of iron-containing intermetallic compounds was suppressed. Supersaturation of the aluminum matrix in an amount of-7 at.% Si was noticed from the XRD patterns During the hot consolidation process, coarsening of the primary silicon particles and precipitation of β-Al5FeSi phase were observed. Evaluation of the compressive strength and hardness of the alloy indicated an improvement in mechanical properties due to the microstructural modification.

关键词： Al-Si-Fe alloy rapid solidification cooling rate microstructure mechanical properties

Temperature Compensation of MEMS Based Resonant Sensor with Uniform Mass Sensitivity 25th

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Temperature Compensation of MEMS Based Resonant Sensor with ...

Diagnosis of Toxoplasma gondii infection in pregnant women using automated chemiluminescence and quantitative real time PCR

第25届中国控制与决策会议

作者： MOHAMMAD BAYAT ROUHOLLAH rajabi HESAMEDIN JOODAKI Department of Electrical Engineering Ashtian Branch islamic Azad University Department of Electrical Engineering islamic Azad University Department of Electrical Engineering Khomein Branch islamic Azad University

ISBN: (纸本)9781467355339

High sensitive micro resonators are among the best way for measuring the mass of small entities. The principal of these sensors is based on measuring the resonance frequency shift. Putting the entity on the resonator led to change in the resonance frequency of the resonator, but changing the location of entity on the resonator’s surface or changing the temperature can cause undesirable shifts in resonance frequency. To tackle these issues, this paper first introduces a new design for folded springs, these springs attached to a platform for target *** a micro-thermoelectric cooler used to keep the sensor temperature ***3 and SbeTe3 are selected as the n-type and p-type thermoelectric materials respectively. The ceramic interface in thermoelectric coolers is used as a place to putdirectly mass sensors on it.

关键词： Micro resonator Resonance frequency Temperature sensitivity Micro-thermoelectric cooler

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Asian Pacific Journal of Tropical Medicine 2019年第1期12卷 26-31页

作者： Ehsan Ahmadpour Elmira Zargami Mahmoud Mahami-Oskouei Adel Spotin Abbas Shahbazi Hossein Samadi Kafil Saba rajabi Paria Alizadeh Yagoob Azadi Reza Bahaj Firouz Shahrivar Aleksandra Barac Infectious and Tropical Disease Research Center Tabriz University of Medical Sciences Students Research Committee Tabriz University of Medical Sciences Department of Parasitology and Mycology Faculty of Medicine Tabriz University of Medical Sciences Drug Applied Research Center Tabriz University of Medical Sciences Clinic for Infectious and Tropical Diseases Clinical Centre of Serbia Faculty of Medicine University of Belgrade

Objective: To identify serodiagnosis and quantification of Toxoplasma gondii(T. gondii) infection among pregnant women in Salmas, northwest of Iran. Methods: In this crosssectional study, 276 blood samples were collected from pregnant women referred to the health care centers in Salmas city. The demographic variables were also recorded. Titers of antiToxoplasma IgM and IgG antibodies(Ab) were determined using the chemiluminescence immunoassay. Quantitative real-time PCR targeting the T. gondii repeated element gene was also performed on the blood sample. Results: Out of all, 19.92%(55/276) and 2.17%(6/276) patients were seropositive for anti-Toxoplasma IgG and IgM Ab, respectively. Moreover, the presence of T. gondii DNA was observed in 12.31%(34/276) blood samples. A significant relationship was observed between the IgG Ab seropositivity and contact with the cat as a risk factor(P=0.022). Conclusions: The seroprevalence rate of T. gondii infection in pregnant women is relatively low. Consequently, the seronegative pregnant women are at risk, and a considerable rate of positive blood samples for the presence of parasite's DNA should not be ignored. Besides, quantitative real-time PCR could be considered as an accurate method for diagnosis of acute toxoplasmosis especially when the precise results are of the most importance in pregnancy. Limiting contact with cats is also suggested for pregnant women.

关键词： Toxoplasmosis Toxoplasma gondii Chemiluminescence immunoassay Real time PCR Pregnancy

A Comparison of the Best Place to Fix Endotracheal Tubes for Men and Women When Men and Women Are in the Same Height

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Open Journal of Anesthesiology 2014年第7期4卷 153-158页

作者： Shahram Nafisi Mehdi rajabi Mohammad Afshar Morteza Rashidian Mitra Mohammadzadeh Department of Anesthesiology Advocate Illinois Masonic Medical CenterChicagoILUSA Department of Anesthesia and Critical Care Kashan University of Medical SciencesKashanIran Faculty of Nursing and Midwifery Kashan University of Medical SciencesKashanIran Clinical Innovation Ins Trials Costa MesaCAUSA Shahid Beheshti University of Medical Sciences TehranIran

Background: Comparison of the tracheal tube depth over the same body height of men and women based upon intubation depth markings. Methods: Kashan University of Medical Sciences ethics committee approved the study and written informed consent was taken for each patient. Patients undergoing surgery requiring general anesthesia with oro-tracheal intubation were included in a prospective observational study. After induction of general anesthesia, the endotracheal tube was secured at the point at which the cuff was just below the vocal cord on laryngoscopy. Results: In a statistical study of 682 intubated patients which consisted of 499 women and 183 men, 28 cases of laryngoscopic view grade III and IV were excluded from the study. The measurement markings on the ETT at the level of right corner of the mouth were 20.65 ± 0.13 and 18.52 ± 0.08 for men and women respectively (CI 95%). Patient’s height has a meaningful correlation with the measurement of the fixation point of the ETT. Pearson correlation coefficient between the securing point of the tube and height was 0.2 and 0.357 for men and women respectively. In most cases of men and women of the same height, Mann-Whitney U test rejected the hypothesis that the tube can be fixed in the particular point. Conclusions: In general, men are taller than women. Comparing the fixation depth of the tube, even when man and woman have the same body height, the endotracheal tube might be placed in a deeper level for men rather than women.

关键词： Intubation Endotracheal Tube General Anesthesia Height Cuffed