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| 1 | 晶体前囊连续圆形撕开口的延伸度和娩核的研究显示文摘为了提高白内障摘除和人工晶体植入术的安全性和手术效果,测定了眼库的20只眼晶体前囊连续圆形撕开口的延伸度。其周长的延伸度是164.5%~190.9%,面积的延伸度为235.2%~364.6%。如果撕囊方法正确,采用水分离和水压娩核法,可通过4~6mm直径的圆形前囊撕开口,顺利地娩出直径为7.0~9.5mm、厚度为3.0~4.5mm的晶体核而不发生撕裂。研究结果证明圆形晶体前囊撕开口有很大的延伸度和很强的抗撕裂能力。 | 孟永安 Magd,S,A | 1995 | 中华眼科杂志1995,31,4: | 32 |
| 2 | Determination of the Normal Contact Stiffness and Integration Time Step for the Finite Element Modeling of Bristle-Surface Interaction显示文摘In finite element modeling of impact,it is necessary to define appropriate values of the normal contact stiffness,Kn,and the Integration Time Step(ITS).Because impacts are usually of very short duration,very small ITSs are required.Moreover,the selection of a suitable value of Kn is a critical issue,as the impact behavior depends dramatically on this parameter.In this work,a number of experimental tests and finite element analyses have been performed in order to obtain an appropriate value of Kn for the interaction between a bristle of a gutter brush for road sweeping and a concrete surface.Furthermore,a suitable ITS is determined.The experiments consist of releasing a steel bristle that is placed vertically at a certain distance from a concrete surface and tracking the impact.Similarly,in the finite element analyses,a beam is modeled in free fall and impacting a surface;contact and target elements are attached to the beam and the surface,respectively.The results of the experiments and the modeling are integrated through the principle of conservation of energy,the principle of linear impulse and momentum,and Newton’s second law.The results demonstrate that,for the case studied,Kn and the impact time tend to be independent of the velocity just before impact and that Kn has a very large variation,as concrete is a composite material with a rough surface.Also,the ratio between the largest height of the bristle after impact and the initial height tends to be constant. | Libardo V.Vanegas-Useche Magd M.Abdel-Wahab Graham A.Parker | 2018 | Computers, Materials & Continua2018,,7: | 4 |
| 3 | Factors affecting the pregnancy rate of after microsurgical reversal of tabal ligation显示文摘 | Magd M Hanafi MD | 2003 | Ferti (steril)2003,80,2: | 1 |
| 4 | Aspects of Fretting Fatigue Finite Element Modelling显示文摘Fretting fatigue is a type of failure that may affect various mechanical components,such as bolted or dovetail joints,press-fitted shafts,couplings,and ropes.Due to its importance,many researchers have carried out experimental tests and analytical and numerical modelling,so that the phenomena that govern the failure process can be understood or appropriately modelled.Consequently,the performance of systems subjected to fretting fatigue can be predicted and improved.This paper discusses different aspects related to the finite element modelling of fretting fatigue.It presents common experimental configurations and the analytical solutions for cylindrical contact.Then,it discusses aspects of fretting fatigue crack initiation,such as crack location,orientation,and length,as well as stress averaging approaches.Then,it deals with the propagation stage;crack face interaction,orientation criteria,and crack growth rate are discussed.Lastly,additional aspects of recent research on fretting fatigue are reviewed:out-of-phase loading,cohesive zone modelling,wear effects,heterogeneity,and crystal orientation.Fretting fatigue is a phenomenon not well understood,and much more research is needed so that its understanding is increased and proper criteria and laws may be available for different cases. | Kyvia Pereira Libardo VVanegas-Useche Magd Abdel Wahab | 2020 | Computers, Materials & Continua2020,,7: | 1 |
| 5 | Characterization, modelling and simu- lation of deformation and fracture behaviour of the light-weight wrought alloys under high strain rate loading 显示文摘 | Magd E E Abouridouane M | 2006 | International Journal of Impact Engineering2006,32,5: | 1 |
| 6 | Influence of strain rate and temperature on the flow behavior of magnesium alloy AZ80显示文摘 | E1- Magd E Abouridouane M | 2001 | Mater Res Adv Techn2001,92,11: | 1 |
| 7 | Solvent dependence of the fluorescence lifetimes of xanthene dyes显示文摘 | Magde D Rojas GE Seybold PG | 1999 | Photochem Photobiol1999,70,5: | 1 |
| 8 | Solvent dependence of the fluorescence lifetimes of xanthene dyes显示文摘 | Magde D Rojas G E Seybold P G | 1999 | Photochemistry and Photobiology1999,70,5: | 1 |
| 9 | Remote Sensing and GIS for Estimation of Irri- gation Crop Water Demand 显示文摘 | EL - MAGD I A TANTON T | 2005 | International Journal of Remte Sensing2005,26,1: | 1 |
| 10 | Improvements in Land Use Mapping for Irrigated Agriculture From Satellite Sensor Data using a Multi Stage Maximum Likelihood Classification 显示文摘 | Magd I Tanton T | 2003 | International Journal of Remote Sensing2003,24,21: | 1 |
| 11 | Effectiveness of gutter brushes in removing street sweeping waste 显示文摘 | LIBARDO V V MAGD M A GRAHAM A P | 2009 | Waste Management2009,30,10: | 1 |
| 12 | Review of historical cohort: ursodeoxycholic acid in extrahepatic biliary atresia显示文摘 | Magd A. Kotb | 2008 | Journal of Pediatric Surgery2008,,7: | 1 |
| 13 | Fluorescence correlation spectroscopy( II): an experimental realization 显示文摘 | Magde D Elson E L Webb W W | 1974 | Biopolymers1974,13,: | 1 |
| 14 | Thermodynamic fluctuations in a reacting system measurement by fluorescence correlation spectroscopy显示文摘 | MAGDE D ELSON E WEBB W W | 1972 | Phys Rev Lett1972,29,11: | 1 |
| 15 | Theeffectofmetronidazoleonaminophyl-lineplasmadrugconcentrationtoUVmonitoring[J]显示文摘 | MAGD TANMY | | 齐鲁药事0,,: | 1 |
| 16 | Prevalence of factor V Leiden mutation and other hereditary thrombophilic factors in Egyptian children with portal vein thrombosis: results of a single-center case-control study显示文摘 | Hanaa El-Karaksy Nehal El-Koofy Manal El-Hawary Azza Mostafa Mona Aziz Mortada El-Shabrawi Nabil A. Mohsen Magd Kotb Mona El-Raziky Marwa Abu El-Sonoon Hassan A-Kader | 2004 | Annals of Hematology2004,,11: | 1 |
| 17 | Prevalence of pathology in women attending colposcopy for postcoital bleeding with negative cytology显示文摘 | Sahu B Latheef R Aboel Magd S | 2007 | Arch Gynecol Obstet2007,276,5: | 1 |
| 18 | Luminescent silole nanoparticles as ehemoselective sensors for Cr (Ⅵ) 显示文摘 | Toal S J Jones K A Magde D | 2005 | Journal of the American Chemical Society2005,127,11: | 1 |
| 19 | TiO2-photocatalytic oxidation of selected heterocyclic sulfur compounds显示文摘 | Magd A A Wahab A AbdEl A M | 1998 | Journal of Photochemistry and Photobiology A:Chemistry1998,114,3: | 1 |
| 20 | A novel synthesis of some new imidazothiazele and glyeocy- amidine derivatives and studies on their antimicrobial ac- tivities 显示文摘 | Magd El-Din A A Roaiah H F Elsharabasy S A | 2007 | Phosphorus Sulfur Silicon Relat Elem2007,182,3: | 1 |