Programmed ribosomal frameshifting (PRF) serves as an intrinsic translational regulation mechanism employed by some viruses to control the ratio between structural and enzymatic proteins. Most viral mRNAs which use PRF adapt an H-type pseudoknot to stimulate -1 PRF. The relationship between the thermodynamic stability and the frameshifting efficiency of pseudoknots has not been fully understood...

Abstract Sequences of consecutive Legendre and Jacobi symbols as pseudorandom bit generators were proposed for cryptographic use in 1988. Major interest has been shown towards functions (PRF) recently, based on the power residue symbols, due to their efficiency multi-party setting. The security these PRFs is not known be reducible standard assumptions. In this work, we show that key-recovery at...

Constrained pseudorandom functions have recently been introduced independently by Boneh and Waters (Asiacrypt’13), Kiayias et al. (CCS’13), and Boyle et al. (PKC’14). In a standard pseudorandom function (PRF) a key K is used to evaluate the PRF on all inputs in the domain. Constrained PRFs additionally offer the functionality to delegate “constrained” keys KS which allow to evaluate the PRF onl...

Systematic review of platelet-rich fibrin (PRF) centrifugation protocols in oral and maxillofacial surgery the introduction AR 2 T 3 : an easy to remember acronym correctly report vertical horizontal PRF

the radars that use medium prf, have either range ambiguity or doppler ambiguity, but these ambiguities can be resolved with selecting a prf set. avoiding ghost targets detection and minimizing blind zones are two important points that we should consider in targets detection. then, using this set, coincident algorithm and clustering the closely detected points, we resolve ambiguity and detect t...

OBJECTIVE Cervical radicular pain is defined as pain arising in the arm caused by irritation of a cervical spinal nerve or its roots. Although many treatment modalities are described in the literature, the available evidence for efficacy is not sufficient to allow definitive conclusions. The goal of this study was to establish the benefits and prognostic factors of pulsed radiofrequency (PRF) o...

BACKGROUND For the treatment of the bisphosphonates and other drugs related osteonecrosis of the jaws, currently medication-related osteonecrosis of the jaws (MRONJ), have been established different conservative therapeutic approaches, avoiding surgery except in cases of extreme need. Given the controversy and lack of current consensus regarding MRONJ therapy in patients, new techniques have be...

Background: Platelet-rich fibrin (PRF) has regenerative characteristics and is used as an autologous source of growth factors for tissue regeneration wound healing. Objective: Evaluating the efficacy C-PRF increasing gingival thickness (GT) keratinized width (KTW) in subjects with a thin phenotype comparison I-PRF injection. Methods: Ten healthy participants (GT ≤ 1.0 mm) were enrolled this stu...

Cis-acting mRNA elements that promote programmed -1 ribosomal frameshifting (-1 PRF) redirect a fraction of translating ribosomes into a new reading frame. In viruses, these signals typically direct the translation of alternative protein products from a single mRNA. However, endogenous programmed frameshifts could also direct elongating ribosomes to premature termination codons, in which case t...

The reconstruction of large bone defects remains a major clinical challenge, and tissue engineering is a promising technique for resolving this problem. Many attempts have been made to optimize bone tissue engineering protocols. The aim of the present study was to develop a process incorporating mesenchymal stem cell (MSC) sheets with nanoscale hydroxyapatite (nano-HA) and autologous platelet-r...