Results 1 to 10 of about 145,363 (99)

Surface Microhardness of Enamel Exposed to Supplemented and Unsupplemented Artificial Saliva Formulations In Vitro [PDF]

open access: yesJournal of Functional Biomaterials
This in vitro study compared enamel surface microhardness responses to sodium fluoride (NaF), tricalcium phosphate (TCP), and calcium glycerophosphate (CaGP) in an olive leaf extract-containing artificial saliva carrier and to the unsupplemented carrier.
Aslı Silkü Oflioğlu   +5 more
doaj   +2 more sources

Design and Simulation of Digital PLL Synchronizer for BPSK and QPSK Based on Software Defined Radio [PDF]

open access: yesEngineering and Technology Journal, 2009
This paper presents a design and simulation of digital PLL synchronizer, usingCostas loop based on SDR for high frequency communication systems. Designparameters are selected for each unit of the proposed systems in order toaccommodate SDR requirements ...
H. T. Ziboon, A. A. Thabit
doaj   +1 more source

A Low-Complexity Joint Compensation Scheme of Carrier Recovery for Coherent Free-Space Optical Communication

open access: yesPhotonics, 2023
In this paper, a low-complexity joint compensation scheme of carrier recovery (JCSCR) for coherent free-space optical (CFSO) communication is proposed.
Xinyu Tang   +5 more
doaj   +1 more source

Carrier dynamic and carrier Temperature in Quantum Well

open access: yesمجلة علوم ذي قار, 2022
Carrier temperature in quantum well (QW) semiconductor optical amplifier (SOA) has been studied, depending density matrix theory (DMT) and carrier dynamic in quantum well. The effect of volume carrier density, doping on effect, pulse shape, nonradiative
Hiba J. Musa, Ahmed H. Flayyih
doaj   +1 more source

Frequency Comb-Based WDM Transmission Systems Enabling Joint Signal Processing

open access: yesApplied Sciences, 2018
We review the use of optical frequency combs in wavelength-division multiplexed (WDM) fiber optic communication systems. In particular, we focus on the unique possibilities that are opened up by the stability of the comb-line spacing and the phase ...
Lars Lundberg   +6 more
doaj   +1 more source

Symbol Timing and Carrier Frequency Recovery Based on Entropy Minimization

open access: yesIEEE Access, 2018
This paper presents a new entropy minimization criterion for both symbol timing and carrier frequency recovery for wireless receivers. Synchronization is achieved by minimizing the entropy estimated from the eye diagram and the constellation diagram. Key
Xiao Liu, Jean-Francois Bousquet
doaj   +1 more source

Optimal encapsulation of maroon bush (Scaevola spinescens R. Br.) extract enriched with bioactive compounds

open access: yesApplied Food Research, 2021
Scaevola spinescens is endemic to Australia and traditionally used as a medicinal plant. Current research has linked the plant with antibacterial, antiviral, anti-inflammatory, and anticancer properties, however, its use is limited due to the instability
Kien Q. Nguyen   +3 more
doaj   +1 more source

Sistem Modulator dan Demodulator BPSK dengan Costas Loop

open access: yesTechne, 2015
Pada tulisan ini akan dibahas suatu sistem transmisi data berbasis BPSK (Binary Phase Shift Keying) menggunakan Costas Loop pada demodulatornya. Pada prinsipnya Costas Loop adalah bentuk khusus dari PLL yang difungsikan untuk melakukan demodulasi sinyal ...
Budihardja Murtianta
doaj   +1 more source

Perancangan dan Realisasi Perangkat Keras Demodulator BPSK dengan Costas Loop

open access: yesTechne, 2015
Pada tulisan ini akan dirancang dan direalisasikan suatu perangkat demodulator data berbasis BPSK (Binary Phase Shift Keying) menggunakan metode Costas Loop.
Budihardja Murtianta   +2 more
doaj   +1 more source

DEVELOPMENT OF METHOD FOR IMPROVING IDENTIFICATION SYSTEMS RELIABILITY USING SRAM PUF AS IDENTIFIER

open access: yesСовременная наука и инновации, 2022
The article presents the research results of degradation effect on memory cells while used as PUF carrier. To reduce degradation, author proposed and experimentally evaluated new cell recovery methods which increases reliability of identification systems
G. S. Aliev
doaj   +1 more source

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