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颈椎前路单节段融合中加压钉和限制型固定板的力学特性

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清华大学学报（自然科学版） 2009年第6期49卷 888-891页

作者：沈莹莹刘伟强韩大庆 Guy r.fogel 清华大学生物医学工程系北京100084 清华大学深圳研究生院深圳518055 深圳清华大学研究院深圳518057 South Texas Orthopedic and Spinal Surgery Associates 9105 Huebner RoadSan Antonio TexasUSA

研究了一款颈椎前路加压钉在颈椎前路融合手术中临近椎体的应力。分别采用传统结构的固定板和新结构加压钉,对12具人体颈椎标本实施C4-C5节段椎间盘切除术后的前路融合固定,利用生物力学试验机和高精度三维运动测试系统进行试验,比较了... 详细信息

研究了一款颈椎前路加压钉在颈椎前路融合手术中临近椎体的应力。分别采用传统结构的固定板和新结构加压钉,对12具人体颈椎标本实施C4-C5节段椎间盘切除术后的前路融合固定,利用生物力学试验机和高精度三维运动测试系统进行试验,比较了两种不同结构固定板(钉)植入颈椎后在前屈15°或后伸20°运动条件下的融合性能,以及在50N及100N的轴向载荷条件下二者的静态载荷分布。结果表明:在固定效果上,前路加压钉和限制型前路固定板两者功能相仿,不存在显著差异;针对C4-C5椎间植入体上所承受的压力,选用前路加压钉较选用限制型前路固定板为佳。

关键词：颈椎前路加压钉限制性前路固定板载荷分布

伯利恒钢铁公司酸洗冷轧联合机组的自动化系统

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钢铁 2001年第12期36卷 34-39页

作者： G.Keintzel r.fogel B.Schlegl M.Lichtenwagner 奥钢联工程技术公司

为伯利恒钢铁公司新建的酸洗冷轧联合机组开发了一套综合自动化方案 ,以满足对产品高质量的要求。轧机自动化以神经网络模型为基础进行道次表、弯辊和窜辊设定点、以及平直度动态控制参数的计算。所涉及的新技术包括多变量张力控制、液... 详细信息

为伯利恒钢铁公司新建的酸洗冷轧联合机组开发了一套综合自动化方案 ,以满足对产品高质量的要求。轧机自动化以神经网络模型为基础进行道次表、弯辊和窜辊设定点、以及平直度动态控制参数的计算。所涉及的新技术包括多变量张力控制、液压调节的非线性控制和轧制厚度的快速更换等。

关键词：酸洗冷轧自动化系统神经网络联合机组伯利恒钢铁公司

Chronic methadone use,poor bowel visualization and failed colonoscopy:A preliminary study

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World Journal of Gastroenterology 2012年第32期18卷 4350-4356页

作者： Siddharth Verma Joshua fogel David J Beyda Brett Bernstein Vincent Notar-Francesco Smruti r Mohanty Department of Internal Medicine Division of GastroenterologyNew York Methodist HospitalWeill Cornell Medical CollegeBrooklynNY 11215United States Department of Finance and Business Management Brooklyn CollegeBrooklynNY 11210United States Department of Internal Medicine Division of GastroenterologySUNY Downstate Medical Center University Hospital of BrooklynLong Island College HospitalBrooklynNY 11201United States Department of Internal Medicine Division of GastroenterologyBeth Israel Medical CenterAlbert Einstein College of MedicineNew YorkNY 10003United States

AIM:To examine effects of chronic methadone usage on bowel visualization,preparation,and repeat ***:In-patient colonoscopy reports from October,2004 to May,2009 for methadone dependent(MD) patients were retrospectively evaluated and compared to matched opioid naive controls(C).Strict criteria were applied to exclude patients with risk factors known to cause constipation or gastric *** reports of all eligible patients were analyzed for degree of bowel visualization,assessment of bowel preparation(good,fair,or poor),and whether a repeat colonoscopy was *** visualization was scored on a 4 point scale based on multiple prior studies:excellent = 1,good = 2,fair = 3,or poor = *** of variance(ANOVA) and Pearson χ 2 test were used for data *** analysis included correlation between methadone dose and colonoscopy *** variables significantly differing between MD and C groups were included in both univariate and multivariate logistic regression analyses.P values were two sided,and re considered statistically ***:After applying exclusionary criteria,a total of 178 MD patients and 115 C patients underwent a colonoscopy during the designated study period.A total of 67 colonoscopy reports for MD patients and 72 for C were included for data *** and gender matched controls were randomly selected from this population to serve as controls in a numerically comparable *** average age for MD patients was 52.2 ± 9.2 years(range:32-72 years) years compared to 54.6 ± 15.5 years(range:20-81 years) for C(P = 0.27).Sixty nine percent of patients in MD and 65% in C group were males(P = 0.67).When evaluating colonoscopy reports for bowel visualization,MD patients had significantly greater percentage of solid stool(i.e.,poor visualization) compared to C(40.3% vs 6.9%,P r bowel preparation(35.8% vs 9.7%,P r repeat colonoscopy(32.8% vs 12.5%,P = 0.004)

关键词： Colonoscopy Methadone Opioid Inadequate bowel preparation Colonoscopy preparation Methadone dose

Low Thrust Minimum Time Orbit Transfer Nonlinear Optimization Using Impulse Discretization via the Modified Picard–Chebyshev Method

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Computer Modeling in Engineering & Sciences 2016年第1期111卷 1-27页

作者： Darin Koblick Shujing Xu Joshua fogel Praveen Shankar California State University-Long Beach CAUSA. Millennium Space Systems Inc. El SegundoCAUSA. Claremont Graduate University CAUSA. University of California-San Diego CAUSA. University of Southern California Los AngelesCAUSA.

The Modified Picard-Chebyshev Method(MPCM)is implemented as an orbit propagation solver for a numerical optimization method that determines minimum time orbit transfer trajectory of a satellite using a series of multiple impulses at intermediate *** waypoints correspond to instantaneous impulses that are determined using a nonlinear constrained optimization routine,SNOPT with numerical force models for both Two-Body and J2 *** is found that using the MPCM increases run-time performance of the discretized lowthrust optimization method when compared to other sequential numerical solvers,such as Adams-Bashforth-Moulton and Gauss-Jackson 8th order methods.

关键词： Low Thrust Picard–Chebyshev Optimization Multi-Impulse Boundary Value Problem.

Outcomes of half-width vertical rectus transposition augmented with posterior fixation sutures for sixth cranial nerve palsy

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International Journal of Ophthalmology(English edition) 2021年第12期14卷 1921-1927页

作者： Ortal fogel-Tempelhof Anat Bachar Zipori Chaim Stolovitch Oriel Spierer Department of Ophthalmology Tel Aviv Sourasky Medical CenterAffiliated to the Sackler Faculty of MedicineTel Aviv UniversityTel Aviv 6423906Israel Pediatric Ophthalmology and Strabismus Unit E.Wolfson Medical CenterAffiliated to the Sackler Faculty of MedicineTel Aviv UniversityTel Aviv 6423906Israel

AIM:To describe the experience with half-width vertical muscles transposition(VrT)augmented with posterior fixation ***:The clinical charts of all patients,who underwent half-width VrT augmented with posterior fixation sutures for sixth cranial nerve palsy from January 2003 to December 2018,were retrospectively *** each patient,pre-and post-operatively,the largest measured angle was used for the calculations,usually resulting with the angle for distance,except in young infants,where measurements were made at near fixation using the Krimsky ***:Fifteen patients met the inclusion criteria for the study,of them 9(60.0%)had also medial rectus muscle recession at the time of *** follow-up period was 21.4±23.2mo(range 1.5-82mo).Preoperative mean esotropia was 51.3±19.7 prism diopter(PD;range 20-90 PD).Postoperative mean deviation on final follow-up was 7.7±20.2 PD(range-40 to 35 PD;P=0.018).In all patients with preoperative abnormal head position,improvement was ***(66.7%)patients had improvement in abduction and 10(66.7%)patients reported improvement in their diplopia,by final *** addition of medial rectus recession was correlated with a larger change in postoperative horizontal deviation compared to baseline(P=0.026).Two(13.3%)patients developed a vertical deviation in the immediate postoperative period which had resolved in one of ***:Half-width VrT augmented with posterior fixation suture,with or without medial rectus muscle recession,is an effective and safe procedure for esotropia associated with sixth cranial nerve palsy.A major improvement in the angle of deviation is *** patients will have improvement in their abnormal head position and diplopia.

关键词： vertical rectus muscles transposition sixth nerve palsy abducens nerve palsy esotropia strabismus surgery

Image-based surgical planning paradigm for cardiovascular diseases

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中国循环杂志 2016年第Z1期31卷 -页

作者： Zhenglun Alan Wei Jarek rossignac Timothy Slesnick Kirk Kanter Mark fogel Ajit Yoganathan Walace H. Coulter Department of BiomedicalEngineering Georgia Institute of Technology and Emory University Atlanta GA USA. Schoolof Interactive Computing Georgia Institute of Technology Atlanta GA USA. Division of Cardiology Children’s Hospitalof Philadelphia Philadelphia PA USA. Division of Cardiothoracic Surgery Children’s Healthcare of Atlanta Emory University Schoolof Medicine Atlanta GA USA Department of Pediatrics Division of Cardiology Children’s Healthcare of Atlanta Emory University Schoolof Medicine Atlanta GA USA

Objective Around 0.8% of children are born with congenital heart disease (CHD). These diseases often require complicated pediatric cardiac surgeries where small changes in operating room execution can have drastic effects on patient outcomes. We will introduce an image-based surgical planning paradigm, which has the ability to preoperatively evaluate surgical options, thereby exploring these changes and enhancing patient outcomes。[第一段]

关键词：冠状动脉疾病心血管疾病儿童人类

Forecasting the Demand for Health Care in China

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China & World Economy 2001年第5期9卷 9-15页

作者： robert W.fogel University of Chicago National Bureau of Economic research

Total pancreatectomy with islet cell transplantation vs intrathecal narcotic pump infusion for pain control in chronic pancreatitis

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World Journal of Gastroenterology 2016年第16期22卷 4160-4167页

作者： Mohamad Mokadem Lama Noureddine Thomas Howard Lee Mc Henry Stuart Sherman Evan L fogel James L Watkins Glen A Lehman Division of Gastroenterology and Hepatology Roy J. and Lucille A. Carver College of Medicine University of Iowa Iowa IA 52242 United States Division of Nephrology and Hypertension Roy J. and Lucille A. Carver College of Medicine University of Iowa Iowa IA 52242 United States Community Health Network Indianapolis IN 46219 United States Division of Gastroenterology and Hepatology Indiana University Medical Center Indianapolis IN 46202 United States

AIM: To evaluate pain control in chronic pancreatitis patients who underwent total pancreatectomy with islet cell transplantation or intrathecal narcotic pump ***: We recognized 13 patients who underwent intrathecal narcotic pump(ITNP) infusion and 57 patients who underwent total pancreatectomy with autologous islet cell transplantation(TP + ICT) for chronic pancreatitis(CP) pain control between 1998 and 2008 at Indiana University Hospital. All patients had already failed multiple other modalities for pain control and the decision to proceed with either intervention was made at the discretion of the patients and their treating physicians. All patients were evaluated retrospectively using a questionnaire inquiring about their pain control(using a 0-10 pain scale), daily narcotic dose usage, and hospital admission days for pain control before each intervention and during their last follow-up. rESULTS: All 13 ITNP patients and 30 available TP + ICT patients were evaluated. The mean age was approximately 40 years in both groups. The median duration of pain before intervention was 6 years and 7 years in the ITNP and TP + ICT groups, respectively. The median pain score dropped from 8 to 2.5(on a scale of 0-10) in both groups on their last follow up. The median daily dose of narcotics also decreased from 393 mg equivalent of morphine sulfate to 8 mg in the ITNP group and from 300 mg to 40 mg in the TP + ICT group. No patient had diabetes mellitus(DM) before either procedure whereas 85% of those who underwent pancreatectomy were insulin dependent on their last evaluation despite ICT. CONCLUSION: ITNP and TP + ICT are comparable for pain control in patients with CP however with high incidence of DM among those who underwent TP + ICT. Prospective comparative studies and longer follow up are needed to better define treatment outcomes.

关键词： Chronic pancreatitis Intractable pain Total pancreatectomy Islet cell transplantation Intrathecal narcotic pump infusion

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表现卓越的亚洲经济

农业经济问题 2004年第8期25卷 4-8页

作者： robert W.fogel 美国芝加哥大学

作者认为 ,在过去 5 0年里 ,东南亚不仅经济得到迅速发展 ,而且人口出生率和食物消费状况得到很大改善。继续保持快速增长需要在劳动力就业、教育、服务业等方面下功夫。

关键词：亚洲经济就业服务业经济发展