A5103019912- Crystallization and Solubility Studies
- Asymmetric Synthesis and Catalysis
- X-ray Diffraction in Crystallography
- Cyclopropane Reaction Mechanisms
- Image and Signal Denoising Methods
- Advanced Adaptive Filtering Techniques
- Synthetic Organic Chemistry Methods
- Digital Filter Design and Implementation
- Crystallography and molecular interactions
- Advanced Vision and Imaging
- Advanced Chemical Physics Studies
- Image and Video Quality Assessment
- Optical Network Technologies
- Optical Coherence Tomography Applications
- Microbial Natural Products and Biosynthesis
- Blind Source Separation Techniques
- Synthesis and biological activity
- Image and Video Stabilization
- Medicinal plant effects and applications
- PAPR reduction in OFDM
- Flavonoids in Medical Research
- Video Coding and Compression Technologies
- Speech and Audio Processing
Centre National de la Recherche Scientifique
2015-2021
Le Mans Université
2015-2021
University of Sfax
2015-2021
Institut des Molécules et Matériaux du Mans
2015-2021
Aldol-type addition of α-triethylsilyl-α-diazoacetone was achieved under nucleophilic activation by tetrabutylammonium fluoride (TBAF). The use a semistoichiometric amount TBAF (protocol P1) provided the corresponding β-hydroxy-α-diazoacetone as sole product. Alternatively, catalytic led to mixture β-hydroxy- and β-silyloxy-α-diazoacetone products, which cleanly desilylated with Et3N·3HF P2). weakly basic conditions employed tolerate wide range substrates constitute high-yielding, convenient...
Summary Presented in this paper is a new hardware architecture of the adaptive vector median filter (AVMF). The suggested structure yielded important values impulsive noise removal from color images while preserving their fine details. software (SW) study demonstrated that its implementation too complex. To overcome limitation, some approximations using ROM memory were proposed to perform square root for (HW) implementation. Comparative results between ideal and approximated SWs AVMF showed...
In recent years, most of developers work continuously in order to improve design performances term energy efficiency and performances. Therefore, the adoption high-level synthesis (HLS) techniques can help reach these requirements, especially when dealing with such complex applications like High Efficiency Video Coding standard (HEVC). This paper discusses a case study intra prediction algorithm HEVC using HLS designing method. For this experiment, we used version 10 Test Model (HM)...
This paper presents an efficient High-Level Synthesis (HLS) hardware architecture for a floating-point implementation of the AVMF filter using SQRT function. The Vivado HLS tool was used to develop several solutions by adding incrementally various directives C code. validation our design realized on Zedboard platform Hardware/Software (HW/SW) environment estimate performance. simulation results prove that HW/SW improved more than 75% in terms processing time compared SW solution with same...
In this article, multichannel image processing using an adaptive approach is the subject of our study. So we have Proposed a new Adaptive Vector Median Rational Hybrid Filter (PAVMRHF). This filter formed by two-layered filters which combine three Filters in first layer and Function second. Simulations' results illustrate that proposed outperforms classic (VMRHF) when images are contaminated with impulsive noise.
In this paper, multichannel image processing using an adaptive approach is the subject of our study. Thus, we have proposed a new Adaptive Vector Directional Distance Filter (VDDF). Simulation results illustrate that filter outperforms classic when images are contaminated with impulsive noise. addition, efficiency proven since it provides excellent balance between noise attenuation and signal-details preservation.
Aldol addition of α-triisopropylsilyl-α-diazoacetone (TIPS-diazoacetone), promoted by excess lithium diisopropylamide (LDA), was developed and applied to the synthesis original C-TIPS diazoaldols, diazoketols, a related Mannich-type product. An unprecedented mechanistic pathway has been proposed, involving lithiated triazene intermediate resulting from nucleophilic LDA on diazo moiety, supported experimental results DFT calculations.
Abstract A Bu 4 NF induced aldol‐type reaction between α‐triethylsilyl‐α‐diazoacetone (I) with aldehydes gives the desilylated adducts (II) using 0.5 equiv.