BACKGROUND The extent of the decentration and tilt was prospectively compared between one piece polymethyl methacrylate (PMMA) and three piece PMMA intraocular lenses (IOLs) which were implanted in the capsular bag after performing continuous curvilinear capsulorhexis. METHODS 91 patients underwent a one piece PMMA IOL implantation in one eye as well as the implantation of the three piece PMM...

Light-weighting of high speed railway equipments has become a major trend, which leads the upgrades of equipments. A new C-shaped bracket has been produced to connect the driving gearbox with the bogie. This paper built a three-dimensions model of a C-shaped bracket, got the maximum and distribution of the stress and deformation under two different working conditions form finite element analysi...

This paper presents an active steering control strategy that improves the performance of rail vehicles on track curves. The control scheme is developed to explore the usually symmetrical arrangement of bogie suspensions such that only simple and practical sensors are needed. The vehicle configuration and requirements of wheelset steering on curves are explained, before the detailed control desi...

This paper demonstrates the possibility to detect suspension failures of railway vehicles using a multiple-model approach from on-board measurement data. The railway vehicle model used includes the lateral and yaw motions of the wheelsets and bogie, and the lateral motion of the vehicle body, with sensors measuring the lateral acceleration and yaw rate of the bogie, and lateral acceleration of ...

spontaneously, 106 patients were randomized to 1 h CPAP or 1 h T-piece/ZEEP, following which patients were extubated and mask 0, administered. No significant difference existed between groups in age, sex, HR, BP, Flo, PaCO, or PaO,. However, P(A-a)02 was significantly greater at 120 mm in the CPAP group. Within the CPAP gsoup, P(A-a)O, was also significantly worse at 120 vs 0 mm. Nineteen Tpiec...

With the emergence of robots in many industries, various tasks that were once considered complex for humans are now effortless. Their functionality and accuracy has proven to be lucrative as well productive in various production sectors. This paper presents the design of a rover employing a rocker bogie mechanism and a 5 degree of freedom robotic arm for manipulation. The movements of the rover...

Reciprocating compressors of the crosshead design have sealing elements around the piston and piston rod. These seals can be of lubricated or nonlubricated design. This paper will give details about our R&D-work for dry running piston rod sealings or packings for high pressure applications. Starting with an overview of packing design some details are given about tribological tests. Measurements...

JR EAST Technical Review-No.5 The JR East Group developed an AC Train prototype (Series E993 type train) towards the formation of the next generation of commuter and suburban trains. This train was the first commuter and suburban train for the JR East Group to employ the articulated method, a method that was adopted in order to improve passenger services and reduce the life cycle cost. In contr...

AIM To report a short-time result of three-piece inflatable penile prosthesis (IPP) implantation on treating patients with organic erectile dysfunction (ED). METHODS Three-piece IPPs were implanted in 42 Chinese patients with ED refractory to systemic treatment between May 2002 and May 2004. The etiologies of ED were neurogenic (28 with paraplegia and seven with traumatic nervi-erigentes inju...