The quantity and quality of the aquifers have been depleted by human activities such as industrialization, use fertilizers, excessive pumping, discharge domestic wastewater. government Saudi Arabia (SA) built three dams in Wadi Itwad so that Abha city could get 15,000 m3/d water. Ten groundwater samples collected from ten wells (Well 1 – Well 10) located Itwad. were analyzed for total dissolved solids (TDS), electrical conductivity (EC), pH, turbidity, temperature, chloride (Cl-), potassium...

Green synthesis of Fe (III), Cu (II), Zn (II) and Ni (II)‐Schiff's‐base complexes from 2‐oxo‐ N ‐(pyridine‐2‐yl)‐2‐(2‐(1‐(pyridin‐2‐yl)ethylidene)hydrazinyl)acetamide(H 2 L)ligand. All new were characterized via several spectroscopic analytical techniques, to establish their molecular structural formulae. appeared have 1:1 molar ratio (M:L). The ligand contributed as a neutral poly‐dentate towards the metal ions. Moreover, material‐studio program was used predict most fitted atomic‐skeletons...

We have successfully synthesized new oxovanadium (IV) complexes with dimedone derivatives and their structure were confirmed by elemental analyses, spectroscopic techniques (FT‐IR, UV–visible, EPR) thermal analysis. The reaction of [VO (acac) 2 ] the azo ligands ( HL n ) produced mononuclear formula (L ]H O. Results molar conductance proved that VO 2+ are non‐electrolytes fall in range 14–16 Ω‐ 1 cm mol −1 . coordination geometry is square‐pyramidal, where vanadium ion coordinated oxygen...

Trivalent Cr (III) and divalent of both Mn (II) Cu complexes containing hydrazone ligands derived from the condensation picolinohydrazide with O‐vanillin were synthesised characterized by elemental analysis, spectral magnetic measurements. The suggested octahedral structures confirmed applying DFT optimization conformational studies. thermal decomposition behaviour complex is discussed. evaluation kinetic parameters (E a , A, ∆H, ∆S ∆G) all degradation stages have been evaluated using...

The reaction of 3-aminopyrzoles with dimethylamino-acrylonitrile derivatives was utilized for the production new functionalized pyrazolopyrimidine compounds 4a-c and 6a-c. structures obtained pyrazolopyrimidines were characterized by different spectroscopic measurements (IR, NMR, mass analyses). DFT quantum chemical calculations applied to determination HOMO-LUMO energies Mulliken atomic charges. investigated exhibited a low energy gap, ranging from 2.70 2.34 eV, 4c both 4b 6b, respectively....

The present study described the fabrication and electroanalytical performance of planar screen-printed disposable sensors based on copper oxide nanoparticles (CuONPs/SPEs) for voltammetric determination tapentadol (TAP) in its marketed pharmaceutical products biological fluids. CuONPs exhibited electrochemical activity against electrooxidation TAP with an anodic peak at 0.84 V BR buffer pH 5. investigations molecular orbital calculations pointed out oxidation tertiary amine group within...

The flood plain of the Nile River has been a safe dwelling throughout history. Recently with growing population and vast urbanization some buildings have started to experience structural damages, which are not related their construction design, but rather ground conditions around buildings' foundations. Variations in properties soil supporting foundations such as bearing capacity, moisture content scouring may eventually lead failure these buildings. This study is attempting characterize...

The newly synthesized Schiff’s base derivative, N-allyl-2-(2-oxoacenaphthylen-1(2H)-ylidene)hydrazine-1-carbothioamide, has been characterized by different spectral techniques. Its reaction with Co(II), Ni(II), and Zn(II) acetate led to the formation of 1 : (M:L) complexes. IR NMR data revealed keto-thione form for free ligand. On chelation Co(II) it behaved as mononegative neutral tridentate via O, N1, S donors, respectively, while showed bidentate mode O N1 atoms Zn(II). electronic spectra...

Nanoparticles of copper oxide (CuO) were achieved via thermal treatment for Cu(II) organometallic complex at calcination temperature up to 650°C.CuO nanoparticles that synthesized elucidated by different spectroscopic techniques such as X-ray diffraction, energy-dispersive spectroscopy.CuO accepted scanning electron microscopy analysis its average diameter was from 15 20 nm nanoparticles, and N 2 adsorption-desorption the Brunauer-Emmett-Teller surface area originated be 42.674m g -1...

Abstract Egyptologists have suggested there might be a hidden extension of the Karnak Temple, located in Luxor governorate Egypt. They believe that temple contains some buried sections on its northern and eastern sides. During January September 2002, ground‐penetrating radar (GPR) magnetic surveys were carried out an 80 × 40 m area near gate. The GPR data did not give clear picture features. A clearer identification features was accomplished by interpretation using analytic signal approach....

An integrated geophysical survey was carried out in a new dwelling area at 15-May town, southeast Cairo, Egypt. The buildings this are intensively affected by dangerous cracks that cause structural instability. aimed to image the shallow subsurface structures, including karstic features, and evaluate their extent, as they may rock instability lead cracking of residential buildings. Resistivity profiling (2-D), using dipole-dipole array ground penetrating radar (GPR) surveys were along seven...

Abstract The Islamic museum was erected in 1896. building is situated the heart of Cairo (capital Egypt) and holds marvellous antiquities priceless ancient hand‐writing rare books. Recently, a restoration scheme has been planned to secure old which suffers from weakened foundations. In addition, wooden roofs will be replaced by concrete ones an extra floor integrated into building. Unfortunately, architecture construction charts were neither available nor obtainable. Therefore, structure...