A series of imidazole [1,2-a] pyridine sulfonamide derivatives was designed and synthesized starting from 2-aminopyridine. In first step, 2-amino pyridine was reacted with 4-bromo phenacyl bromide in the presence of MgO leading to the afford the corresponding imidazole [1,2-a] pyridine scaffold (Panda et al., 2022 [1] ). This intermediate was subsequently subjected to chlorosulfonation using chlorosulfonic acid to afford imidazo [1,2-a] pyridine −3- sulfonyl chloride (Amer, 2009 [2] ). Thereafter, derivative (Amer, 2009 [2] ) was treated with a variety of drugs containing an amine group [4-amino-5-chloro-N-(2- (diethyl amino) ethyl) -2-methoxy benzamide, 4-amino -N-(pyridin-2-yl) benzene sulfonamide and 4-(amino methyl) cyclohexane −1-c

Indoor air pollution is a critical environmental challenge with negative impacts on human health, especially in urban and enclosed settings. This study aimed to evaluate the tolerance of three indoor ornamental plants—Epipremnum aureum, Sansevieria trifasciata, and Syngonium podophyllum Schott—against pollutants generated by cigarette smoke and kerosene combustion. Plants were exposed under controlled indoor conditions, while particulate matter (PM₁. ₀, PM₂. ₅, PM₁₀), total volatile organic compounds (TVOCs), and carbon dioxide (CO₂) were measured before, during, and after exposure. Plant tolerance was assessed using the Air Pollution Tolerance Index (APTI), calculated from total chlorophyll content, leaf extract pH, ascor

In this study, the activity concentrations of indoor radon, thoron
and their progeny have been measured in air for 61 different
locations of Al-Maddan city using twin cup dosimeter. Furthermore,
some useful parameters concerning the health hazards have been
estimated; working level month (WLM), annual effective dose (Eff),
and excess lung cancer per million person per year (ELC).The results
show that the values of radon gas levels in the investigated districts
varied from 56.28 to 194.43Bq/m3with an overall average value
132.96Bq/m3, while 0.313 to 1.085 for WLM with an overall average
0.740, respectively. The value of Eff and ELC have been found to
vary from 1.420 to 4.918 mSv/y with an overall average valu

A Stereomicroscopic Evaluation of Four Endodontic Sealers Penetration into Artificial Lateral Canals Using Gutta-Percha Single Cone Obturation Technique, Omar Jihad Banawi*, Raghad

The purpose of my thesis is to synthesis two new bidentate ligands ‎which were used to prepare series of metal complexes by reacting the ‎ligands with (M+2 = Mn, Co, Ni, Cu, Cd and Hg) ‎ ‎ Succinyl chloride was used as starting material to synthesis two ‎bidentate ligands (L1) and (L2) by reaction it with 4-chloroaniline ‎‎(L1) and ‎ ‎ (4-aminoacetophenone) (L2) in dichloromethane as a solvent, that ‎are:‎ ‎(L1) = N1,N4-bis (4-chloro phenyl ) succinamide ‎(L2) =N1,N4-bis(4-acetylphenyl)succinamide ‎ The new ligands were characterize by using spectroscopic study ‎‎(Fourier-transform infrared spectroscopy (FT-IR), electronic spectra ( ‎UV-Vis) ,nuclear magnetic resonance(1H,13C-NMR), Mass spectra ‎

In this study, Al2O3 thin films were prepared by dc reactive sputtering technique using different gas mixtures of argon and oxygen gases (90:10, 70:30, 50:50, 30:70, and 10:90). These films were characterized to introduce their surface morphology and elemental composition as functions of the oxygen content in the gas mixture. The gas mixing ratio plays a crucial role in controlling the nanoscale morphology of the prepared thin films. The [Al]/[O] ratio varies non-linearly with the Ar:O2​ mixing ratio. Increasing the oxygen content leads to a progressive decrease in surface roughness, resulting in smoother and more uniform films with finer granular features. These results presented herein are useful to optimize the sputtering process to ac