purpose: to compare the optical properties of hydrophilic and hydrophobic intraocular lenses (iols) containing uv-absorber and to determine their chemical composition. methods: optical properties of different foldable hydrophilic and hydrophobic as well as non-foldable hydrophobic polymethylmetacrylate (pmma) iols were evaluated in three powers of 15, 22 and 25 diopters. optical properties were...

purpose: to report the refractive changes after intraocular lens (iol) implantation in children with congenital and developmental cataract. methods: in this historical cohort study, the clinical records of children between 2 and 15 years old that had lensectomy with posterior capsulotomy, anterior vitrectomy and iol implantation with more than 5 years of follow-up were studied. refractive error...

Introduction: Exposure to the low frequency electric and magnetic fields (ELF-EMF) is very common in workers occupied in the combined cycle power plant during work shifts  The present study aimed to measure ELF-EMF flux density among shift and non-shift workers, determine job stress among workers and office workers, and identify major factors associated with job stress in the studied groups. M...

Today every circuit has to face the power consumption issue for both portable device aiming at large battery life and high end circuits avoiding cooling packages and reliability issues that are too complex. It is generally accepted that during logic synthesis power tracks well with area. This means that a larger design will generally consume more power. The multiplier is an important kernel of ...

We propose two hardware inverters for calculating the multiplicative inverses in finite fields GF (2): one produces a result in every O(m) time using O(m) area; and the other produces a result in every O(1) time using O ( m ) area. While existing O(m)-time inverters require at least two shift registers in the datapath, the proposed O(m)-time implementation uses only one, thus costing less hardw...

| We present a technique for low power realization of Finite Impulse Response (FIR) lters implemented using Distributed Arithmetic. In most applications, the distribution pro le of input data values is known. The proposed technique uses a data encoding which can be tuned to the speci c distribution pro le so as to reduce toggles in the shift register chain. We present a generic Nega-Binary codi...