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150篇 您的检索式:作者名="Shoja"
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1Production of hydrogen and syngas via pyrolysis of bagasse in a dual bed reactor显示文摘Pyrolysis of bagasse followed by thermal cracking of tar was carried out at atmospheric pressure using a dual bed reactor. The first bed was used for the pyrolysis and the second bed was used for thermal cracking of tar. Iron fillings were used as the packed bed material in the second bed. The effects of reaction time (20 to 40 min), reactor temperature (600 to 900℃) and packed bed height (40-100 mm) on the product (char, tar and gas) yield and gas (H2 , CO, CO2 , CH4 , CnHm ) composition were studied. Over the ranges of the experimental conditions used, the operating conditions were optimized for pyrolysis temperature around 850℃, a reaction time of 30 min and packed bed height of 100 mm, thus we could obtain a gas richer in hydrogen and carbon monoxide and poorer in carbon dioxide and hydrocarbons. It was observed that compared with single bed process, dual bed process increased the gas yield from 0.397 to 0.750 m3 /kg and decreased the tar yield from 0.445 to 0.268 g/g while the heating value of the product gas remained almost constant (10-11 MJ/m3 ).Morteza Shoja Mokhtar Akhond Babatabar Ahmad Tavasoli Abtin Ataei 2013Journal of Energy Chemistry2013,22,4:3
2Discrete-time based sliding-mode control of robot manipulators显示文摘Purpose-The purpose of this paper is to develop sliding mode control with linear and nonlinear manifolds in discrete-time domain for robot manipulators.Design/methodology/approach–First,a discrete linear sliding mode controller is designed to an n-link robot based on Gao’s reaching law.In the second step,a discrete terminal sliding mode controller is developed to design a finite time and high precision controller.The stability analysis of both controllers is presented in the presence of model uncertainties and external disturbances.Finally,sampling time effects on the continuous-time system outputs and sliding surfaces are discussed.Findings–Computer simulations on a three-link SCARA robot show that the proposed controllers are robust against model uncertainties and external disturbance.It was also shown that the sampling time has important effects on the closed loop system stability and convergence.Practical implications-The proposed controllers are low cost and easily implemented in practice in comparison with continuous-time ones.Originality/value-The novelty associated with this paper is the development of an approach to finite time and robust control of n-link robot manipulators in discrete-time domain.Also,obtaining an upper bound for the sampling time is another contribution of this work.Sajjad Shoja Majidabad Heydar Toosian Shandiz 2012International Journal of Intelligent Computing and Cybernetics2012,5,3:2
3圆锥角膜患者健康同胞的角膜地形图变化(英文)显示文摘目的:描述圆锥角膜(KCN)患者亲属的受累角膜地形图。方法:对75名KCN患者的150名同胞的300只眼睛在角膜诊所进行了研究,经过完整的裂隙灯,屈光检查并由角膜摄影视频图片提供角膜地形图。进行方差分析,Fisher精确测试和卡方检验比较结果。结果:在150个同胞中,女56%,男44%,平均年龄21(15-39)岁。诊断KCN和可疑KCN的分别为12.3%和6.6%。KCN患者中央角膜曲率(CK)为46.50±4.51(D)而可疑KCN患者为45.66±1.52(D)。KCN患者角膜下方与上方平均屈光度差值(I-S)为3.51±2.50(D)而在可疑KCN患者为1.56±1.22(D)。在KCN状态椭圆型为67.6%(25例)而圆型为32.4%(12例)。在可疑KCN分别为90%和10%。KCN屈光不正为-7.50至1.25(-1.25±1.83)D,可疑KCN为0.45至-4.2(-0.68±0.76)D而健康组为2.75至-7.5(-0.6±1.12)D。KCN和可疑KCN中22.7%为轻度散光,18.3%为中度散光。结论:KCN患者健康同胞中KCN情况增加显示出需要筛选检查以早期诊断并在这些个体中谨慎实施屈光性角膜手术或隐形眼镜治疗。Mohammad Reza Besharati Mohammad Reza Shoja Masoud Reza Manaviat Maryam kheirandish Maasome Zare Rad 2010国际眼科杂志2010,10,2:2
4Heuristic solutions for the multiple-choice multi-dimension knapsack problem显示文摘Akbar M M Manning E G Shoja G C 2001Lecture Notes in Computer Science2001,2074,2:1
5Bipolar supernumerary renal artery显示文摘Shakeri AB Tubbs RS Shoja MM 2007Surg Radiot Anat2007,29,1:1
6Surface landmarks for the junction between the transverse and sigmoid sinuses : appli-cation of the 'strategic' burr hole for suboccipital craniotomy显示文摘TUBBS R S LOUKAS M SHOJA M M 2009Neurosurgery2009,65,6:1
7Preterm premature rupture of membrane and twin-to-twin transfusion syndrome before 20 weeks:a favourable outcome显示文摘Gire C Nicmse C ShoJa R 2008Fetal Diagn Ther2008,17,4:1
8Surface landmarks for the junction between the transverse and sigmoid sinu- ses: application of the 'strategic' burr hole for suboccipital craniotomy 显示文摘Tubbs RS Loukas M Shoja MM 2009Neurosurgery2009,65,6:1
9Formation of Self-Assembled Triple-Lay- ered Rotavirus-Like Particles (tlRLPs) by Constitutive Co-Expression of VP2, VP6, and VP7 in Stably Transfected High-Five Insect Cell Lines 显示文摘SHOJA Z TAGLIAMONTE M JALILVAND S MOLLAEI-KANDELOUS Y DE STRADIS A TORNESELLO M L BUONAGURO F M BUON- AGURO L 2015J Med Virol2015,87,1:1
10A correlation between direct and indirect Doppler ultrasonographic measures in transplant renal artery stenosis显示文摘Ardalan MR Tarzamani MK Shoja MM 0,,05:1
11Comparisonof cell culture with RT-PCR for enterovirus oletetion in stoolspecimens from patients with acute flaccid paralysis 显示文摘Shoja ZO Tabatabie H Shahmahmoudi S 2007J ClinLab Anal2007,21,4:1
12Dry eye after LASIK for myopia:Incidence and risk factors显示文摘Shoja MR Besharati MR 2007Eur J Ophthalmol2007,17,1:1
13Retinopathy and microalbuminuria in type 2 diabetic patients显示文摘Manaviat MR Afldaami M Shoja MR 2004BMC Ophthalmology2004,4,:1
14Bipolar supernumerary renal artery显示文摘SHAKERI AB TUBBS RS SHOJA MM 2007Surg Radiol Anat2007,29,1:1
15Prevalence of psychiatric morbidities in acute coronary heart disease 显示文摘SHOJA SHAFTI S 2014Cardiovasc Psychiatry Neurol2014,2014,40:1
16A method for detecting influential observations in radial DEA models显示文摘Jahanshahloo G R Hosseinzadeh F Shoja N 2004Applied Mathematics and Computation2004,147,:1
17Proposal for the existence of a nasogastric reflex in humans, as a potential cause of upper gastrointestinal symptoms显示文摘Shoja MM Tubbs RS Ansarin K 2007Med Hypotheses2007,69,2:1
18Zinc and copper plasma concentrations in rheumatoid arthritis patients from a selected population in Iran Pak 显示文摘Ala S Shokrzadeh M Pur Shoja AM 2009Pak J Biol Sci2009,12,14:1
19The medial tentorial artery of Bernasconi Cassinari: a comprehensive review of its anatomy and neurosurgical importance显示文摘Tubbs RS Nguyen HS Shoja MM 2011Acta Neurochir (Wien)2011,153,24:1
20Surface landmarks for the junction between the transverse and sigmoid sinuses:application of the 'strategic' braT hole for suboccipital craniotomy显示文摘TUBBS RS LOUKAS M SHOJA MM 2009Neuro- surgery2009,65,6:1
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