instruments operative materials and basic surgical techniques

... FUNCTION, MATERIALS, ANDTECHNIQUES IN THE ARCHAIC AND CLASSICAL PERIODS Monumental Greek sculpture in stone began on the islands of the Aegean and on Crete in the seventh centuryB.C and developed ... specialized in the study of Greeks and Greek culture overseas, burial customs, and in ancient gems and finger rings He has written several handbooks on Greek vases and sculpture and more generally on Greek ... ancient sculptural techniques and Greek marbles He was an inexhaustible source of information and insight and our world is poorer in his absence I am also grateful to Beatrice Rehl and John Boardman

Ngày tải lên: 23/03/2014, 11:21

... Trang 1OPTOELECTRONICS - MATERIALS AND TECHNIQUES Edited by Padmanabhan Predeep Trang 2Optoelectronics - Materials and Techniques Edited by Padmanabhan Predeep Published ... various optoelectronic and photonic materials and techniques and would like to thank to the authors for their wonderful efforts Stake holders of the ongoing optoelectronic and photonics revolution ... devices, computational techniques, clean energy harvesting, medical instrumentation, materials and device characterization and scores of other areas of R&D the science of optics and electronics

Ngày tải lên: 19/06/2014, 11:20

... not perfectly arranged, and misorientation of crystal grains occur in both a- and c- axes due to fast surface migration and clustering of atoms The stacking faults, edge and mixed dislocations ... interfaces, I1 and I2, form on the upper and lower terraces The Ga–N bond length is b=1.94 Å, the sapphire step height is s=2.16 Å, and d=1.5 Å After ref (Romano et al., 1996) h=s-J L Weyher and co-workers ... initial island nuclei, which are twisted and tilted with respect to the substrate surface 4.2 Stacking faults There have been reported that stacking faults formed in GaN layers grown on polar and non-polar

Ngày tải lên: 19/06/2014, 11:20

... surgeons for pre-operative screening, surgical planning, assessment of surgical outcomes, detection andmanagement of complications, and refinement and development of surgical techniques.This chapter ... Brint, M Ferrari Surgical instruments In: L Buratto, SF Brint, eds LASIK ciples and techniques Thorofare, NJ: Slack, 1998, pp 35–68. Trang 2LASIK Indications, Contraindications, and Preoperative Evaluation ... hyperopia increac-ases the demand for accomodation and attendant modative convergence Thus measuring with prisms the amplitudes of convergence and di-vergence (far and near, and with or without accomodation)

Ngày tải lên: 09/08/2014, 20:22

... suspect for keratoconus, andK corneal power asymmetry between 1.4 and 1.9 D was considered suspect for keratoconus,and I-S value modified Rabinowitz method were 96–100% and 85–89%, respectively ... topographical maps, and modified Rabinowitz criteria toestablish stricter criteria for distinguishing normal controls, keratoconus suspects, and earlyand advanced keratoconus Smolek and Klyce (21) ... criteria and quanti-identified the anterior central corneal power (K) between 47.2 and 48.7 D as suspect and K the inferior–superior central anterior corneal power asymmetry (I-S value) between 1.4 and1.9

Ngày tải lên: 09/08/2014, 20:22

... Eye and Ear Infirmary and Harvard Medical School, Boston, Massachusetts, U.S.A CHUN CHEN CHEN and DIMITRI T AZAR Massachusetts Eye and Ear Infirmary, Schepens Eye Research Institute, and Harvard ... decentration, corneal irregularities, islands, and opticalzone characteristics In addition, topographic techniques allow the comparison ofpreoperative corneal contour with postoperative results, which can ... the human eye.THE ENTRANCE PUPIL In the mid-1980s, Walsh and Guyton and then Uozato and Guyton transformed the initialthinking on centering techniques (5,6) They emphasized that the former method

Ngày tải lên: 09/08/2014, 20:22

... and 52.5%and 39% (26) at 3 months postoperatively; 67% (33), 26% (34), 27% (35), 72% (36), 67%(37), 20% and 43.75% (42), and 50% and 53.8% (29) at 6 months; and 50% and 57.6%(32), 23% (38), and ... (41) and 86% and 68% (26) at 3 monthspostoperatively; 73% (33), 69% (34), 55.7% (35), 79% (36), 91% (37), 84% and 100%(42), and 75% and 53.8% (29) at 6 months; and 77.7% and 84% (32), 85% (38), and ... evolving operative, intraoperative, and postoperative strategies Despite the efforts to evaluate sur-gical techniques critically, to compare instruments, and to minimize the incidence and op-timize

Ngày tải lên: 09/08/2014, 20:22

... Incidence and management of intraoperative and early postoperative com- plications in 1000 consecutive laser in situ keratomileusis cases Ophthalmology 1998;105: 1847–1848. Feren-23 SP Holland, S ... proliferative potential, and if so, a nest of cells may appear, stopexpanding, and remain stable within the interface for years Occasionally, the nest of cellswill continue to expand and may produce more ... including meibomian gland secretions, particles fromsponges and instruments, talc from gloves, particles in the air, metallic fragments from theblades, blood cells, epithelial cells, and debris from

Ngày tải lên: 09/08/2014, 20:22

... cautiously, and a thorough understanding of the treatment options andthe likelihood of success is essential Central islands were first described following automated lamellar keratoplasty (ALK) andoccur ... surroundingthe central island and epithelial thinning overlying the central island may lead to completetopographical and visual improvement (10,14) Furthermore, treatment of residual centralislands after PRK ... confirmed 2 Surgical Intervention If a true central island does not regress to a satisfactory level, surgical intervention may berequired Prior to central island treatment, the power (in diopters) and

Ngày tải lên: 09/08/2014, 20:22

... LASIK Surgical Techniques and Complications 44 I Pallikaris, D Siganos LASIK complications and management Cornea, 2d ed Chap 9, pp227–243 45 SA Melki, CE Proano, DT Azar Optical disturbances and ... postoperative epithelial defect, which causes flap edema and therefore poor adherence; (3) high correction causing large disparity between the cap and the bed; and (4) interface de- bris and ... College of Physicians and Surgeons, New York, New York, U.S.A. SANDEEP JAIN, KATHRYN COLBY, and DIMITRI T AZAR Massachusetts Eye and Ear Infirmary, Schepens Eye Research Institute, and Harvard Medical

Ngày tải lên: 09/08/2014, 20:22

... hyperopia from prior cornealsurgeries (RK, PRK, and/or LASIK) Mean spherical equivalent was
1.50 preoperativelyand0.75 3 months postoperatively (21) De Wit and colleagues compared two groups of patients ... wrinkling or haze, infection, and central islands A thorough preoperativeevaluation including slit lamp examination and corneal topography is required to select pa-tient candidates Epithelial plugs ... the ability surgically to correct myopia, peropia, and astigmatism, depending on the laser system and profile chosen Correction ofmyopia and myopic astigmatism is possible using an expanding slit

Ngày tải lên: 10/08/2014, 20:21

... differences in density of the black area and the contrast between the black area and the white one from the PS layers (Figures 6a and 6c) and SRSO layers (Figures 6b and 6d) Those differences suggest ... solution 36 Optoelectronics - Materials and Techniques and by using the current density in the ECD method For the purpose of obtaining highconcentration Er-doped SRO materials (more than 0.1 atomic ... chemical bonding, diffusion and vibrations, and are difficult to study both experimentally and theoretically However, the microscopic details of disordering, hydrogen migration and bonding within the...

Ngày tải lên: 19/06/2014, 11:20

... according to the Mott and Davis model (Mott and Davis, 1979) The mobility edges of both the conduction- and valence-band are depicted by EC and EV respectively The tails of these bands are considered ... constituents The phonons are characterized by energy and momentum (impulse) 60 Optoelectronics - Materials and Techniques as long as the lattice and the collective movement of the atoms (ions) exists ... most utilized techniques in analyzing the compositional and structural properties of a molecular compound When a radiation of IR optical range, with 62 Optoelectronics - Materials and Techniques...

Ngày tải lên: 19/06/2014, 11:20

... VRH model (Brottger and Bryksin, 1985) They have defined the concept of the “directed percolation” and averaged the hopping probability as: 82 Optoelectronics - Materials and Techniques ⎛ ⎞ e E⋅R ... the capacity parameters (C0 and β) and the assigned RC-time for various SiOx samples when U=5V constant voltage pulse is applied 86 Optoelectronics - Materials and Techniques -7 Qrel (C) 10 0.59 ... levels, where two are the HOMO and LUMO nano-crystal bands’ edges and the third level is an instable energy level placed into the band-gap region (between LUMO and HOMO levels) Let it to be called...

Ngày tải lên: 19/06/2014, 11:20

... thereby satisfying both energy and See Mani et al (2009a) for detailed growth procedures and X-ray and optical characterizations 142 Optoelectronics - Materials and Techniques Will-be-set-by-IN-TECH ... 140 Optoelectronics - Materials and Techniques Will-be-set-by-IN-TECH Γ is a phenomenological damping rate Equations (1) and (2) denote the photonic and excitonic parts of a polariton ... Optoelectronics - Materials and Techniques Will-be-set-by-IN-TECH 12 glass and the superfluid He bath When the quadrupole polariton wave leaves Cu2 O, it is converted into transmitted light and a portion...

Ngày tải lên: 19/06/2014, 11:20

... views (Ti plate (a); foil (b)) and bottom side views (Ti plate (c); foil (d))] and XRD patterns [Ti plate (e and g) and Ti foil (f and h)] of anodized Ti plate and Ti foil Figure 11(e-h) shows ... (110), (111) and 174 Optoelectronics - Materials and Techniques (211) peaks indicate that the nanostructured titanium dioxide film is highly oriented with respect to the substrate surface and the ... Optoelectronics - Materials and Techniques shown in Fig 8; the X-ray diffraction patterns showed two different orientations, i.e., (400) and (222) on different substrates, i.e., glass and clay, respectively...

Ngày tải lên: 19/06/2014, 11:20

... containing fluorescent groups Synthesis and properties of copolymers of N- 206 Optoelectronics - Materials and Techniques vinylcarbazole and (-)-menthyl acrylate and (-)-menthyl methacrylate Macromolecules, ... intensity of the spin-coated TB-LPS film before and after annealing at 200 ºC for h 224 Optoelectronics - Materials and Techniques 3.2 Phosphorescent host materials In the development of high efficiency ... triplet-triplet and tripletpolaron (Baldo et al., 2000) High efficiency host materials for green and red phosphorescence have been realized, but the research for blue phosphorescence emitting and host materials...

Ngày tải lên: 19/06/2014, 11:20

... Mn values were calculated to be 2500 and 2300 (Table 2), respectively Scheme Synthesis of monomer and polymers P4 and P5 240 Optoelectronics - Materials and Techniques entry Polymer P4 P5 Yield ... values of 6100 and 6250, respectively 242 Optoelectronics - Materials and Techniques Scheme Synthesis of polymers P8 and P9 Figure 7A shows the photoluminescence spectra of P8 and P9 in diluted ... polymer P10 and compound 13 in CHCl3 (1.0 × 10–5 M) 244 Optoelectronics - Materials and Techniques Fig Structures of polymer P10 and compound 13 Terthiophene-, quarterthiophene- and quinquethiophene-layered...

Ngày tải lên: 19/06/2014, 11:20

... forces) and the random force, respectively, acting on the same bead, and ς i is the frictional drag coefficient The following expression of Brownian forces 266 Optoelectronics - Materials and Techniques ... conformations and aggregate morphologies of MEH-PPV in toluene (top left and right) or chloroform (bottom left and right) The monomer densities 276 Optoelectronics - Materials and Techniques for ... purpose Basics of textile materials and description of our test samples Fibrous materials must be considered at three different scales First, fibres are the basic elements of textile materials; ...

Ngày tải lên: 19/06/2014, 11:20

... effect by the acoustic emission and laser extensometry techniques, Materials Science and Engineering A 324(1-2) (2002) 200-207 310 Optoelectronics - Materials and Techniques Ciamberlini, Claudio, ... (Haggerty and Young, 1989; Wood, 1990; Wood, 1996; Millan and Escofet, 1996; Tsai and Hsieh, 1999), wavelet Transform (Kreiòl et al., 1997; Tsai and Hsiao, 2001; Shakher et al., 2002; Tsai and Chiang, ... frequency and differences are evaluated through the energy of each peak Results are obtained within a few seconds 296 Optoelectronics - Materials and Techniques Fig 11 Example of temporal signal and...

Ngày tải lên: 19/06/2014, 11:20