The next generation WDM/TDM-PON is scalable and delivers elastically ultra-high data rates to thousands of end-users, and therefore network security becomes particularly important. We identify different levels of security and responsibilities in the communications network, we identify vulnerabilities in the optical access network and we describe the security features of the next generation PON ...

OBJECTIVE Paraoxonase (PON) is associated with high-density lipoprotein and protects serum lipid from oxidation. The aim of this study was to determine serum PON, arylesterase (ARE) activities, and total antioxidant capacity (TAC) in metabolic syndrome (MES). METHODS This case-control study was performed on 106 patients with MES and 231 healthy subjects. Serum PON and ARE activities were dete...

The treatment of carotid artery stenosis is associated with the risk of complications, which may include stroke after carotid artery stenting (CAS) and myocardial infarction after carotid endarterectomy (CEA). The imbalance between prooxidative mechanisms and antioxidant capacity creates a milieu of factors, which may increase the risk of complications after endovascular procedures. We have exa...

Esophagogastric junction adenocarcinoma (EGJA) is a serious public health problem with high mortality in China. In this study, we assessed the association between Paraoxonase 1 (PON-1) rs662 C>T, rs854560 A>T polymorphisms and EGJA risk. This case-control study enrolled 2,740 participants of Asians origin from the Eastern Chinese Han populations. SNPscanTM genotyping assay was harnessed to dete...

Retinal pigment epithelium (RPE) provides nourishment and protection to the eye. RPE dysfunction due to oxidative stress and inflammation is one of the major reason for many of the retinal disorders. Organophosphorus pesticides are widely used in the agricultural, industrial and household activities in India. However, their effects on the eye in the context of RPE has not been studied. In this ...

Objectives: This study aims to investigate the correlation between serum anti-heat-shock protein 70 (anti-HSP 70) levels, serum paraoxonase (PON) levels and prognosis of idiopathic sudden sensorineural hearing loss (ISSHL). Patients and Methods: Twenty-five patients with ISSHL as the study group and 25 healthy volunteers as the control group were enrolled in this study. Blood samples were obtai...

We demonstrate 4-channel WDM-PON with 50 GHz channel spacing based on wavelength locked F-P LDs. The transmission bit rate and the length between the CO and the subscriber is 155 Mb/s and 20 km, respectively. The proposed WDM-PON can accommodate 80 channels with EDFA based broadband light source.

An advanced architectural platform based on wireless-enabled PON topologies is described. Network modelling of WiMAX channel transmission, based on FDM, over a multiwavelength, splitter-based PON has demonstrated EVMs below -30dB and error-free multipath transmission. ©2010 Optical Society of America OCIS codes: 060.4250 (Networks), 060.4510 (Optical communications)

Investigations on mammalian serum paraoxonase (PON), now called PON1, started nearly 50 years ago by Aldridge2,3 with the study of its hydrolytic activity with paraoxon and other organophosphates. More recently, '5 years ago, it was established that PON1 is a member multigene family in mammals.4 There are 3 PON genes closely aligned on human chromosome 7 and mouse chromosome 6. Research efforts...

This work proposes a novel fully distributed Ethernet over Star Coupler-based PON architecture. The architecture uses a collision-free DBA scheme in which the OLT is excluded from the implementation of the time slot assignment. To implement a distributed control plane, direct connectivity (communicability) between the ONUs should be in place without imposing any constraint on the PON topology. ...