BACKGROUND To describe the morphology of a macular hole in the early postoperative period following vitrectomy with primary silicone oil tamponade. METHODS A case report with optical coherence tomography (OCT) scans prior to surgery, at 20 minutes postoperatively and then at 17 hours postoperatively. RESULTS OCT images of a 73-year-old woman with a stage 3 macular hole were obtained. At 20 ...

We review recent developments concerning supersymmetric black holes in string theory. After a general introduction to the laws of black hole mechanics and to black hole entropy in string theory, we discuss black hole solutions in N = 2 supergravity, special geometry, the black hole attractor equations and the underlying variational principle. Special attention is payed to the crucial role of hi...

Discontinuities are natural structures that exist in rocks and can affect the stability of rock structures. In this article, influence notch presence on strength failure evolution around a hole compressed specimens is investigated numerically. Firstly, uniaxial compressive test specimen with circular modeled, simulated. separate model, notches created at surface hole. Results show that, when zo...

BACKGROUND A variety of methods are available for the fixation of femoral shaft fractures after total hip arthroplasty. However, few studies in the literature have quantified the performance of such repair constructs. The aim of this study was to evaluate biomechanically four different constructs for the fixation of periprosthetic femoral shaft fractures following total hip arthroplasty. METH...

Diffusion-shaped film holes with compound angles are currently being investigated for high temperature gas turbine airfoil film cooling. An accurate prediction of the coolant blowing rate through these film holes is essential in determining the film effectiveness. Therefore, the discharge coefficients associated with these film holes for a range of hole pressure ratios is essential in designing...

STATEMENT OF THE PROBLEM One disadvantage of cement-retained crowns is the lack of predictable irretrievability. This problem can be overcome through designing a screw access hole in the metal substructure of cement-retained restoration and using porcelain stain to define this area. PURPOSE This study aimed to evaluate the influence of existence of screw access hole on porcelain fracture resi...

BACKGROUND/AIMS Closure is more difficult to achieve in macular holes that remain open following a previous unsuccessful pars plana vitrectomy (PPV). We present our results with the internal limiting membrane (ILM) translocation technique that is used to optimise outcomes in refractory macular holes. METHODS A prospective, interventional, case series was conducted. 12 eyes of 12 consecutive p...