The performance of DWDM 2x10.7Gbit/s-DQPSK is assessed comparing mid-link optical phase conjugation (OPC) and DCF for dispersion compensation. We report a 44%-increase in transmission distance resulting from nonlinear phase noise reduction by using mid-link OPC. Introduction Mid-link optical phase conjugation (OPC) is an attractive method for replacing chromatic dispersion compensating fiber (D...

In this report the analysis of optimum DCF Length for minimum bit error rate (BER) in SMF is done. With the aid of optsim simulation tool a DCF is employed with the proper variation in length to overcome the non linearity to get the minimum BER. Better performance was shown when the combination of SMF Length 90Km and DCF Length 12Km was chosen. At this particular value the minimum BER was obtai...

This paper examines a new mechanism for distributed resource reservation that offers support for applications with QoS requirements in a wireless multi-hop network. This mechanism is based on IEEE 802.11 DCF and includes end-to-end reservations of time slots and distribution of reservation information to mobile nodes unaware of the reservation, piggy-backed on existing medium access control mes...

We herein describe the case of a 51-year-old man with a duodenocolic fistula (DCF) caused by a stomal ulcer. The patient complained of watery diarrhea, dysgeusia and malnutrition. His medical history included distal gastrectomy with Billroth I reconstruction for duodenal ulcer perforation. A combination study using endoscopy and contrast imaging confirmed the presence of DCF. Laparotomic fistul...

the establishment as well as the survival of mobile ad-hoc networks relies on the cooperation of nodes for performing network operations such as routing and packet forwarding. in these networks, misbehaving nodes can severely degrade network’s performance by not cooperating in networking operations. in this paper, we study the issue of node misbehavior in packet forwarding. to counter this type...

Discounted cash flow (DCF) is the most accepted approach for company valuation. It is well grounded in theory and practice. However, the DCF approach, which is commonly used for traditional companies valuation, presents a number of serious weaknesses within the Internet companies’ context. One of these weaknesses is tackling the uncertainty that characterize future cash flows of these companies...

Because the broadly consumed pain killer diclofenac (DCF) is a recognized pollutant, monitoring of its concentration routinely performed in surface waters. As valuable alternative to chromatographic and immunochemical assays, we developed piezoelectric immunosensor quantify DCF, first buffer (PBS) then river water samples. A sensing layer comprising DCF was built up on silica-coated quartz sens...

The interactions of sodium diclofenac drug (s-DCF) with different graphene species were investigated using both first principles calculations based on Density Functional Theory (DFT) and adsorption experiments. Through batch adsorption experiments, it was found that rGO was a good adsorbent for removing the s-DCF drug from aqueous solutions. The general-order kinetic model shows the best fit to...

The cuticle is a complex aliphatic polymeric layer connected to the cell wall and covers surfaces of all aerial plant organs. The cuticle prevents nonstomatal water loss, regulates gas exchange, and acts as a barrier against pathogen infection. The cuticle is synthesized by epidermal cells and predominantly consists of an aliphatic polymer matrix (cutin) and intracuticular and epicuticular waxe...