Spectrophotometric Study of the Reaction between Tryptophan and Ferroin at Different Forms
text
article
2015
eng
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
58
v.
3
no.
2015
237
258
https://ejchem.journals.ekb.eg/article_983_6cbbd5df5c7538b6b8a9d0c3b3ae86e9.pdf
dx.doi.org/10.21608/ejchem.2015.983
Modified Bagasse Sheet with Functionalized Silanes for Removing of Engine Oil
text
article
2015
eng
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
58
v.
3
no.
2015
259
269
https://ejchem.journals.ekb.eg/article_1018_05cad6695d29cc15009fc0a398055287.pdf
dx.doi.org/10.21608/ejchem.2015.1018
Carboxymethyl Cellulose-Graft-Polyacrylic Acid Hydrogel: A Cost Effective and Reusable Adsorbent for Cu2+ .
text
article
2015
eng
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
58
v.
3
no.
2015
271
285
https://ejchem.journals.ekb.eg/article_984_d0685be1883d417ebfcabc76323166b6.pdf
dx.doi.org/10.21608/ejchem.2015.984
Thermoplastic Composites from Natural Reed Fibers
text
article
2015
eng
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
58
v.
3
no.
2015
287
298
https://ejchem.journals.ekb.eg/article_986_a32fee0d7f28c69ad7bbee6902bf75b0.pdf
dx.doi.org/10.21608/ejchem.2015.986
Effect of Bagasse and Rice Straw Cellulose Nanofibers on Physico – Mechanical Properties of Alginate Nanocomposites Films
text
article
2015
eng
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
58
v.
3
no.
2015
299
316
https://ejchem.journals.ekb.eg/article_987_bebfd53920cd6877bc45d27165a23894.pdf
dx.doi.org/10.21608/ejchem.2015.987
Structure Characterization of Terazosin Drug using Mass Spectrometry and Thermal Analyses Techniques in Comparison with Semi-Empirical Molecular Orbital (MO) Calculations
text
article
2015
eng
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
58
v.
3
no.
2015
317
332
https://ejchem.journals.ekb.eg/article_1019_1b1bce8c284345cbc4db1af860e560b5.pdf
dx.doi.org/10.21608/ejchem.2015.1019
Spectrophotometric Micro-determination of Three Quinolones Antibacterial Drugs in Pure and in Pharmaceutical Dosage Forms by Reactions with Diphenylamine Sulphonate Redox Indices
text
article
2015
eng
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
58
v.
3
no.
2015
333
347
https://ejchem.journals.ekb.eg/article_993_b3b2db9f4ac5d281791cb1c6a86b7ef6.pdf
dx.doi.org/10.21608/ejchem.2015.993
Determination of Heavy Metals in 16 Bleaching Creams and 3 Mixtures of Bleaching Creams from Local Market of Jeddah
text
article
2015
eng
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
58
v.
3
no.
2015
377
386
https://ejchem.journals.ekb.eg/article_1020_e30930e460d93415db89ec4ab2cef9b6.pdf
dx.doi.org/10.21608/ejchem.2015.1020
Studying the Effect of β-Cyclodextrin in Aqueous Polymerization of Some Acrylate Monomers Bearing Hydrophobic Moiety
text
article
2015
eng
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
58
v.
3
no.
2015
387
401
https://ejchem.journals.ekb.eg/article_1021_bd453f97acabe5ff43ac129c2f4aa869.pdf
dx.doi.org/10.21608/ejchem.2015.1021
Spectrophotometric Determination of Gemifloxacin Mesylate, Moxifloxacin.HCl and Gatifloxacin Sesquihydrate in Pure and in Pharmaceutical Preparations
text
article
2015
eng
SIMPLE, rapid and sensitive spectrophotometric method was developed for the determination of gemifloxacin mesylate (GMF), moxifloxacin.HCl (MXF) and gatifloxacin sesquihydrate (GAF) in pure and pharmaceutical preparation. This method is based on ion pair formation reaction between GMF, MXF and GAF and rosebengal indicator in universal buffer of pH 5.The formed ion pair is measured at λmax = 575 nm. All optimum conditions are established. The calibration graphs are rectilinear at concentration ranges 9.71 – 53.40, 8.758 – 52.55 and 8.048– 48.29 μg ml-1 for GMF, MXF and GAF, respectively. The sandell sensitivity (S) = 0.0263 , 0.0244 and 0.0263 μg cm-2 , molar absorptivity = 1.861x 104 , 1.835x 104 and 1.561x 104 L mol-1 cm-1 , correlation coefficient 0.9998 and LOD = 01.90, 1.607 and 1.876 μg ml-1 and LOQ = 05.74, 0.2036 and 5.684 μg ml-1 are calculated for GMF, MXF and GAF, respectively. The values of SD are = 0.0218 - 0.0297, 0.02 - 0.0377 and 0.0216 - 0.0282 and RSD are = 0.0554 - 0.3075, 0.0380 - 0.4344 and 0.0537 - 0.3497 % for GMF, MXF and GAF. The method is applied for the assay of investigated three drugs in pharmaceutical dosage forms. The results are in good agreement with those obtained by the official methods
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
58
v.
3
no.
2015
349
364
https://ejchem.journals.ekb.eg/article_1028_c59fb1a459ac87550e937c454cf56da9.pdf
dx.doi.org/10.21608/ejchem.2015.1028
Effect of CaO Nanoparticles on the Properties of Polyamide 6
text
article
2015
eng
THE number of efforts in order to modify the properties ofpolymeric fibers by organic or inorganic particles has increasedin recent times because of increasing interest of fiber research inhightech fiber applications. In addition to these attempts, theinnovation of nanotechnology also leads to the development ofnanoparticles for various end uses such as nanocomposite fibers. Inthis study Calcium oxide nanoparticles (CaO) were introduced intopolyamide 6 (PA6) and drawn into filaments through a melt extrusionprocess. The effect of CaO nanoparticles on the thermal, structural,morphological and tensile properties of polyamide-CaOnanocomposites fibers was investigated by using thermal gravimetricanalysis (TGA), X-ray diffraction (XRD), Fourier transform infraredspectroscopy (FTIR), scanning electron microscopy (SEM) andmechanical properties, respectively.
Egyptian Journal of Chemistry
National Information and Documentation Centre (NIDOC), Academy of Scientific Research and Technology, ASRT
0449-2285
58
v.
3
no.
2015
365
375
https://ejchem.journals.ekb.eg/article_1029_f4841314dd0d308e1de9ee29e27a4225.pdf
dx.doi.org/10.21608/ejchem.2015.1029