synthesis

Research and Design of a Matrix Multiplier on Fpga

This paper presents a comprehensive investi- gation and hardware implementation of a multi-bit Brawn matrix multiplier architecture. The research focuses on analyzing the system characteristics of binary multipliers realized with both conventional and optimized full and half adders. Particular attention has been given to the applicability of such multipliers within arithmetic logic units (ALUs) for vector and scalar processing architectures. Analytical models have been formulated to quantify hardware resource utilization and computational latency across various logic base configurations.

Synthesis, Structure and Electrophysical Properties of Fluoride-Conducting Phases Вa1-XLaXSnF4+X

It has been determined that the concentration interval for the existence of solid solutions of heterovalent substitution $\mathrm{Ba}_{1-\mathrm{x}} \mathrm{La}_{\mathrm{x}} \mathrm{SnF}_{4+\mathrm{x}}$, which are formed by the partial replacement of barium cations with lanthanum cations in the $\mathrm{BaSnF}_4$ compound, is $0.0<x \leq 0.12$. The obtained phases are isostructural $\mathrm{BaSnF}_4$, have a crystal lattice of tetragonal syngony, corresponding to the $\mathrm{P} 4 / \mathrm{nmm}$ space group.

Synthesis of PI- and PID-Regulators in Control Systems Derived by the Feedback Linearization Method

The work proposes a comprehensive approach to the synthesis of the coefficients of PI- and PID-controllers, as well as the coefficients of feedback based on the state variables of the system, using the feedback linearization method for the synthesis of control influences. This approach considers not only the static but also the dynamic characteristics of the system, allowing for higher control accuracy. The feedback linearization method facilitates the transformation of nonlinear systems into linear ones, simplifying their further analysis and controller design.

Synthesis of Some Azo Dyes Based on 2,3,3-Trimethyl-3H-indolenine

New azo compounds on the base of 2,3,3-trimethyl-3H-indolenine were synthesized and characterized by FT-IR, NMR, and Mas-spectral analysis. The synthesis was conducted in three different pathways: 1) by reducing the nitro compound with Zn/NaOH in alcohol; 2) by heating of 2,3,3-trimethyl-3H-indolenine-5-amine in the presence of MnO2 in toluene, and 3) by diazotization of 2,3,3-trimethyl-3H-indolenine-5-amine and treating the resulting diazonium salt with the appropriate coupler.

Synthesis of Heterocyclic Pyridine-Based Chalcones with Dimeric Structure

Three new heterocyclic chalcones containing pyridine moiety were synthesized and their chemical structures were determined via IR, 1H NMR and 13C NMR spectroscopy. General name of these compounds are α,ω-bis{3-(pyridin-3-yl)-1-(phenyl-4-oxy)prop-2-en-1-one}alkanes. The chalcones are dimers having a symmetrical structure and they can be differed by the alkyl spacer length (CnH2n, where n = 8, 10 or 12). Differential scanning calorimetry (DSC) technique was employed to study their phase transition behaviors.

Electrosynthesis of Ni-Co/Hydroxyapatite as a Catalyst for Hydrogen Generation via the Hydrolysis of Aqueous Sodium Borohydride (NaBH4) Solutions

To generate hydrogen from its storage as NaBH4, a catalyst was synthesized via an electrochemical method. The catalyst, Ni-Co, had hydroxyapatite as a support catalyst. The electrochemical cell consisted of a DC power supply, a carbon anode and cathode, and a bipolar membrane to separate the cell into two chambers. The current density was adjusted to 61, 91, and 132 mA/cm2. The electrolysis time was 30, 60, and 90 min. The particles produced were analyzed by XRD and SEM/EDX and tested in the hydrolysis of NaBH4 for hydrogen generation.

Synthesis, Characterization and Application of a Diatomite-Based Composite for the Adsorption of Anionic Dyes in Aqueous Solutions

Synthesis, characterization and application of the polyaniline-diatomite (PAD) composite in the adsorption of Reactive Red 120 (RR 120) and Acid Blue (AB) dyes were carried out. The composite was prepared by the in situ polymerization of aniline. Mass of purified diatomite was mixed with a solution containing aniline dissolved in 2M hydrochloric acid at room temperature. The solid obtained was characterized using the SEM, XRD and FTIR analyses. The kinetic adsorption of dyes was described using the pseudo-second order kinetic model.

The Synthesis and In Silico Antihypertensive Activity Prognosis of New Mannich Bases Containing the 1,2,4-Triazole Moiety

As a part of our continuous research on potential antihypertensive agents among morpholine and piperidine derivatives, 10 novel target compounds containing 1,2,4-triazole and morpholine or piperidine moieties have been designed and synthesized, and the docking studies have been conducted in order to find biologically active substances with the antihypertensive activity.

The Synthesis and Theoretical Anti-Tumor Studies of Some New Monoaza-10H-Phenothiazine and 10H-Phenoxazine Heterocycles

The synthesis and anticancer activity of a series of new 3-amido derivatives of 3-chloro-10H-pyrido[3,2-b][1,4]benzoxazine and 3-chloro-10H-pyrido[3,2-b][1,4]benzothiazine is presented. The synthesized structures were characterized by UV-visible, FT-IR, 1H NMR spectroscopy and elemental analytical data. The in silico physicochemical properties disclosed that neither 3-chloro-10H-pyrido[3,2-b][1,4]benzoxazine and 3-chloro-10H-pyrido[3,2-b][1,4]benzothiazine intermediates nor their carboxyamido derivatives violate Lipinski’s rule of five.

Polymer-FLR for Mud Fluid Loss Reduction

A fluid loss reducer polymer (polymer-FLR) was synthesized using acrylamide, hydroxyethyl methacrylate, N-vinyl pyrrolidone, and N,N-dimethyl acrylamide by free radical polymerization, followed by partial hydrolysis. Its composition was confirmed using FTIR and 1H NMR spectroscopy. API mud fluid loss reduction of polymerFLR was about 10-fold lower than the blank. High temperature, high pressure fluid loss reduction of about 9-fold were achieved compared with the blank.