khalaf.ali

Khalaf Ali Fayez Abuamra

استاذ - أستاذ متفرغ

كلية العلوم

العنوان: قسم النبات والميكروبيولوجى -كلية العلوم -جامعة سوهاج

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أضيف حديثا
  • المقررات الدراسية 1
  • ملحقات المقررات الدراسية 0
  • واجبات المقررات الدراسية 0
  • المنشورات و المؤلفات 12
  • ساعات مكتبية 0
  • الاعلانات 0
  • عدد الملفات المرفوعه 0
  • كل التنزيلات 0

المنشورات و المؤلفات التي تحتوي علي الكلمة المفتاحية: Antimicrobial activity

Novel Azomethine Pd(II) and VO(II) Based Metallo-Pharmaceuticals as Anticancer, Antimicrobial and Antioxidant agents: Design, Structural inspection, DFT investigation and DNA interaction

2019-08-09 10:54:55 الكلمات المفتاحية Imine complexes, DFT Calculations, Antimicrobial activity, DNA interaction, anticancer activity,
Novel Azomethine Pd(II) and VO(II) Based Metallo-Pharmaceuticals as Anticancer, Antimicrobial and Antioxidant agents: Design, Structural inspection, DFT investigation and DNA interaction
The new NO bi-dentate imine ligand namely (2-[(3-Nitro-benzylidene)-amino]-benzoic acid) (NBA) imine ligand (L) and their Pd(II) and VO(II) complexes have synthesized and characterized utilizing different physiochemical methods including elemental analyses, FT-IR, NMR, molar conductance and magnetic susceptibility measurements. The stability constant of these complexes has also determined. The studies of these complexes were found to have [M (L)] composition where ... إقراء المزيد

Complexation of Schiff bases incorporating of Salicylaldehyde Derivatives and Amino Acids to Copper(II) as an effective strategy for antimicrobial activity improvement, DNA Interaction and catalytic activity

2018-11-22 14:16:13 الكلمات المفتاحية Antimicrobial activity, DNA interaction, Amino acids, Catalytic activity, Copper(II), TGA, IR,
Complexation of Schiff bases incorporating of Salicylaldehyde Derivatives and Amino Acids to Copper(II) as an effective strategy for antimicrobial activity improvement, DNA Interaction and catalytic activity
Five Cu(II) complexes are tridentate Schiff bases amino acids ligands derived from condensation 3–methoxysalicylaldehyde (MS) or 4-diethylaminosalicylaldehyde (DS) with α-amino acids (L-phenylalanine(P), L-histidine (H), DL-tryptophane (T)). All ligands are analyzed by 1HNMR and 13CNMR. The investigated complexes have been prepared and characterized by elemental analysis, infrared spectra, ultraviolet-visible and thermal analysis in dynamic air atmosphere (40ml / min) at a ... إقراء المزيد

Desighn, Characterization and Biological activity of new mixed ligand transition metal complexes of glutamine, glutaric and glutamic acid with nitrogen based ligands.

2018-10-05 11:42:34 الكلمات المفتاحية Antimicrobial activity, TGA, IR, DNA interaction, imidazoles, Ternary complexes, Glutamine, glutaric and glutamic acid,
Desighn, Characterization and Biological activity of new mixed ligand transition metal complexes of glutamine, glutaric and glutamic acid with nitrogen based ligands.
A new series of Cu(II), Co(II), Ni(II) and Fe(II) ternary complexes of glutamine, glutaric and glutamic acid with imidazole derivatives have been synthesized. The nature of bonding and the stereochemistry of the complexes have been deduced from elemental analyses, infrared, electronic spectra, conductivity measurements and thermogravimetric analysis. The structure of [Co(glu)(IMI)2] and [Fe(glu)(IMI)2(H2O)2] complexes was validated using quantum mechanics calculations ... إقراء المزيد

Toxicological and Biological Activities of the Acid Secretion of Berthellina citrina (Heterobranchia, Pleurobranchidae) from the Red Sea

2018-09-24 07:53:43 الكلمات المفتاحية Berthellina citrina, Lethal effects, Amino acids, Antimicrobial activity, Cytotoxic activity,
Toxicological and Biological Activities of the Acid Secretion of Berthellina citrina (Heterobranchia, Pleurobranchidae) from the Red Sea
_Berthellina citrina _is a pleurobranchid opisthobranch characterized by its skin acid-secretion that contains sulphate and chloride ions with traces of organic matter. To identify defensive potential and bioactivity, we tested this secretion for the first time against _Artemia salina_, different strains of microorganisms, human RBCs and human cancer cell lines. It showed lethality to _A. salina _with LC50 values 83.86 ... إقراء المزيد

Synthesis and Antimicrobial Activity of Substituted Nitrotetrazole-5-Carbaldehyde Hydrazones

2018-09-18 21:48:27 الكلمات المفتاحية Synthesis, nitrotetrazole-5-carbaldehyde, Antimicrobial activity, minimum inhibitory concentrati,
Synthesis and Antimicrobial Activity of Substituted Nitrotetrazole-5-Carbaldehyde Hydrazones
A series of substituted -nitrotetrazole-5-carbaldehyde hydrazones were synthesized and tested for antimicrobial activity with respect to _Staphylococcus aureus_, _Streptococcus pneumoniae_, _E. coli_, _P. aeruginosa_, and _Micrococcus_. The minimum inhibitory concentrations were determined. إقراء المزيد

Nano structure Iron (II) and Copper (II) Schiff base complexes of a NNO-tridentate ligand as new antibiotic agents: spectral, thermal behaviors and DNA binding ability

2018-09-16 13:40:18 الكلمات المفتاحية TGA, NMR, IR, Calf thymus DNA, Antimicrobial activity, Synthesis, characterization, Nano particle, DNA interaction,
Nano structure Iron (II) and Copper (II) Schiff base complexes of a NNO-tridentate ligand as new antibiotic agents: spectral, thermal behaviors and DNA binding ability
Complexes of Fe (II) and Cu (II) with a tridentate Schiff base, 2-((z)-(pyridine-2-ylimino) methyl) naphthalene1-ol derived from 2-hydroxy-1-napthaldehyde and 2-aminopyridine were synthesized. Both the ligand and its complexes were characterized on the basis of microanalysis, melting point, 1H and 13CNMR, molar conductivity, thermal analysis, IR and UV/Vis spectral studies. From analytical data, the stoichiometry of the complexes was found to ... إقراء المزيد

Sonochemical synthesis, DNA binding, antimicrobial evaluation and in vitro anticancer activity of three new nano-sized Cu(II), Co(II) and Ni(II) chelates

2018-09-16 21:50:05 الكلمات المفتاحية Antimicrobial activity, Synthesis,
Sonochemical synthesis, DNA binding, antimicrobial evaluation and in vitro anticancer activity of three new nano-sized Cu(II), Co(II) and Ni(II) chelates
Sonochemical synthesis, DNA binding, antimicrobial evaluation and in vitro anticancer activity of three new nano-sized Cu(II), Co(II) and Ni(II) chelates based on tri-dentate NOO imine ligands as precursors for metal oxides إقراء المزيد

Three novel Ni(II), VO(II) and Cr(III) mononuclear complexes: Synthesis, structural characterization, DNA interaction, antimicrobial evaluation and anticancer activity

2018-09-04 06:45:46 الكلمات المفتاحية VO(II), thermal analyses, Antimicrobial activity, DNA interaction, imine ligand, anticancer activity,
Three novel Ni(II), VO(II) and Cr(III) mononuclear complexes: Synthesis, structural characterization, DNA interaction, antimicrobial evaluation and anticancer activity
Three novel Cr(III),VO(II) and Ni(II) imine complexes derived from the condensation of 2‐aminophenol (AP) with 2‐hydroxynaphthaldehyde (HN) were synthesized. The prepared HNAP imine ligand and its complexes were investigated via various physicochemical tools. The results suggest that the parent ligand behaves as a dibasic tridentate ONO ligand, when coordinated to Cr(III) in octahedral and to Ni(II) in tetrahedral geometry. In ... إقراء المزيد

Design and nonlinear optical properties (NLO) using DFT approach of new chelates for DNA interaction, antimicrobial, anticancer activities and molecular docking studies

2018-09-04 12:31:30 الكلمات المفتاحية Imine complexes, Nonlinear optical properties (NLO), DFT Calculations, Antimicrobial activity, DNA interaction, Anticancer,
Design and nonlinear optical properties (NLO) using DFT approach of new chelates for DNA interaction, antimicrobial, anticancer activities and molecular docking studies
In recent years, metals based antitumor complexes have played a vital role in chemotherapy. Therefore, in this study, some new imine Cr(III), VO(II) and Ni(II) complexes incorporating ESAP imine ligand (2-Ethoxy-6-((2-hydroxy-phenylimino)-methyl)-phenol were designed and synthesized. The investigated complexes were fully characterized by micro analysis, infrared, electronic spectra, thermal analysis(TGA), conductivity as well as magnetic susceptibility measurements. Moreover, the stability constants ... إقراء المزيد

DNA interaction, antimicrobial, anticancer activities and molecular docking study of some new VO(II), Cr(III), Mn(II) and Ni(II) mononuclear chelates encompassing quaridentate imine ligand

2018-09-06 07:47:58 الكلمات المفتاحية NMR, VO(II), imines, Chelates, thermal analyses, Antimicrobial activity, DNA interaction, Anticancer, IR, TGA, Docking, Cr(III),
DNA interaction, antimicrobial, anticancer activities and molecular docking study of some new VO(II), Cr(III), Mn(II) and Ni(II) mononuclear chelates encompassing quaridentate imine ligand
The present study was conducted to synthesis of some new imine Cr(III), VO(II), Mn(II) and Ni(II) complexes derived from the condensation of 2-amino phenol with 2-hydroxynapthaldehyde were synthesized. The prepared HNPN imine ligand was analyzed by its melting point, IR, 1H NMR and 13C NMR spectroscopies. The investigated HNPN imine complexes were characterized by elemental analysis, FT IR, UV–vis and ... إقراء المزيد