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Spectrophotometric Determination Of Carbamazepine In Pharmaceutical Formulations Based On Its Reaction With A Brominating Agent, Warda Rizgar, Diyar S. Ali
Spectrophotometric Determination Of Carbamazepine In Pharmaceutical Formulations Based On Its Reaction With A Brominating Agent, Warda Rizgar, Diyar S. Ali
Polytechnic Journal
Two accurate spectrophotometric methods described for the estimation of carbamazepine (CBZ) in both pharmaceutical and pure form. These methodologies are attached to the bromination of CBZ by bromine formed in instantly from the bromate-bromide reaction. The general procedure includes the additional of a known amount of bromate-bromide reagent in an acidic mediocre to CBZ. After the reaction is integrated, the unreacted bromine was reacted with a steady amount of methylene blue, and the absorbance was measured at 665 nm (method A) or, cresol red could be used for the reaction and the absorbance moderated at 517 nm (method B). Beer’s …
Spectrophotometric Determination Of Carbamazepine In Pharmaceutical Formulations Based On Its Reaction With A Brominating Agent, Warda Rizgar, Diyar S. Ali
Spectrophotometric Determination Of Carbamazepine In Pharmaceutical Formulations Based On Its Reaction With A Brominating Agent, Warda Rizgar, Diyar S. Ali
Polytechnic Journal
Two accurate spectrophotometric methods described for the estimation of carbamazepine (CBZ) in both pharmaceutical and pure form. These methodologies are attached to the bromination of CBZ by bromine formed in instantly from the bromate-bromide reaction. The general procedure includes the additional of a known amount of bromate-bromide reagent in an acidic mediocre to CBZ. After the reaction is integrated, the unreacted bromine was reacted with a steady amount of methylene blue, and the absorbance was measured at 665 nm (method A) or, cresol red could be used for the reaction and the absorbance moderated at 517 nm (method B). Beer’s …
Spectrophotometric Determination Of Carbamazepine In Pharmaceutical Formulations Based On Its Reaction With A Brominating Agent, Warda Rizgar, Diyar S. Ali
Spectrophotometric Determination Of Carbamazepine In Pharmaceutical Formulations Based On Its Reaction With A Brominating Agent, Warda Rizgar, Diyar S. Ali
Polytechnic Journal
Two accurate spectrophotometric methods described for the estimation of carbamazepine (CBZ) in both pharmaceutical and pure form. These methodologies are attached to the bromination of CBZ by bromine formed in instantly from the bromate-bromide reaction. The general procedure includes the additional of a known amount of bromate-bromide reagent in an acidic mediocre to CBZ. After the reaction is integrated, the unreacted bromine was reacted with a steady amount of methylene blue, and the absorbance was measured at 665 nm (method A) or, cresol red could be used for the reaction and the absorbance moderated at 517 nm (method B). Beer’s …
The Utility Of Michael Condensation For The Synthesis Of Macromolecule Surfactants From Azo-Naphthols As Possible Antimicrobials, Ahmed Hammam, A. El-Tabei, M. Hegazy, Mahmoud Mohamed, M. Sadeq
The Utility Of Michael Condensation For The Synthesis Of Macromolecule Surfactants From Azo-Naphthols As Possible Antimicrobials, Ahmed Hammam, A. El-Tabei, M. Hegazy, Mahmoud Mohamed, M. Sadeq
Al-Azhar Bulletin of Science
((E)-4-(pyridin-3-yldiazenyl)naphthalen-1-ol) and (4-((E)–pyridin-3-yldiazenyl)– 8-((Z)-pyridin-3yldiazenyl)naphthalene-1,5-diol) (IIIa, b) were prepared. Condensation of (IIIa, b) with 2-(pyridin-4ylmethylene) malononitrile (V) under Michael reaction conditions gave the corresponding bezo[h]chromene and dihydrochromene[8,7-h] chromene derivatives (VIa, b). The cationic derivatives for (IIIa, b) and (VIa, b) were obtained by quaternization as (IVa,b) and (VIIa,b). The structures obtained were confirmed form IR, 1HNMR and mass spectra studies. The antimicrobial activities were also studied and have been found that; the cationic dyes (IVa,b) and (VIIa) exhibit promising results against Candida albicans.
Spectrophotometric Determination Of Carbamazepine In Pharmaceutical Formulations Based On Its Reaction With A Brominating Agent, Warda Rizgar, Diyar S. Ali
Spectrophotometric Determination Of Carbamazepine In Pharmaceutical Formulations Based On Its Reaction With A Brominating Agent, Warda Rizgar, Diyar S. Ali
Polytechnic Journal
Two accurate spectrophotometric methods described for the estimation of carbamazepine (CBZ) in both pharmaceutical and pure form. These methodologies are attached to the bromination of CBZ by bromine formed in instantly from the bromate-bromide reaction. The general procedure includes the additional of a known amount of bromate-bromide reagent in an acidic mediocre to CBZ. After the reaction is integrated, the unreacted bromine was reacted with a steady amount of methylene blue, and the absorbance was measured at 665 nm (method A) or, cresol red could be used for the reaction and the absorbance moderated at 517 nm (method B). Beer’s …
Evaluation Of Catalytic Implementation Of Spinel Cofe2o4loaded Nay In Direct Hydroxylation Of Benzene To Phenol, Adham El-Zomrawy, Mohamed Thabet
Evaluation Of Catalytic Implementation Of Spinel Cofe2o4loaded Nay In Direct Hydroxylation Of Benzene To Phenol, Adham El-Zomrawy, Mohamed Thabet
Al-Azhar Bulletin of Science
Spinel cobalt ferrite CoFe2O4 was synthesized and in situ incorporated onto the porous structure of NaY zeolite by the co-precipitation process. The structural design of CoFe2O4/NaY composite was advantageous in terms of activity and stability. Various techniques were utilized to characterize the catalysts like X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and pore structure analysis by N2 adsorption at 77 K. It has been found that spinal CoFe2O4 in CoFe2O4/NaY was sparse on the NaY surface, along with the relevant species inside the zeolite pores. The SEM surface morphology suggests that CoFe2O4 has an irregular …
Ampero-Photometric Method (Apm) For The Determination Of Colored Solution Concentration Using A Light Dependent Resistor (Ldr), Adham El-Zomrawy
Ampero-Photometric Method (Apm) For The Determination Of Colored Solution Concentration Using A Light Dependent Resistor (Ldr), Adham El-Zomrawy
Al-Azhar Bulletin of Science
A simple, portable photometer depending on the intensity of the light that passes through a colored solution was designed. Through it, the measured light intensity parameter is converted to an electrical current density, which flow in a circuit of light dependent resistor (LDR). The suggested device is characterized by that it does not depend on the absorptivity at a specific wavelength, but depends on the intensity of the light passing through the sample only. The merits of this method are low power, high sensitivity, and very low cost. The proposed method is in excellent harmony with the determination of the …
Removal Efficiency Of Cod, Bod, Oil And Grease And Tss From Industrial Wastewater By Usingelectro-Coagulation, Mostafa Emara, Nazik Farid, Abdelatty Eltalawy
Removal Efficiency Of Cod, Bod, Oil And Grease And Tss From Industrial Wastewater By Usingelectro-Coagulation, Mostafa Emara, Nazik Farid, Abdelatty Eltalawy
Al-Azhar Bulletin of Science
The wastewater treatment becomes more necessity. A cheap and more effectively methods for treating liquid waste before discharging it into any other water systems is required. A lot of wastewater technologies are known which include physicochemical treatment processes and biological treatment processes .This technique depend on electrochemical technology which being improved and developed to minimize the addition of chemicals. This study was aiming to investigate the efficiency of the electro-coagulation technique for removal of COD, BOD, Oil and Grease and TSS from Industrial Wastewater from Meat and Slaughterhouse industry in Tanta, Gharbeya, Egypt. Electro-coagulation is depend on passing of an …
Comparative Analytical Study Of Polyisobutylene Succinic Anhydride-Modified Triethanolamine Emulsifier, Rabie Farag, Hosni Gomaa, Hassan Helal, Sherif Mostafa
Comparative Analytical Study Of Polyisobutylene Succinic Anhydride-Modified Triethanolamine Emulsifier, Rabie Farag, Hosni Gomaa, Hassan Helal, Sherif Mostafa
Al-Azhar Bulletin of Science
An analytical comparative study was performed between the prepared emulsifiers polyisobutylene succinic anhydride (PIBSA) and the commercial LZ2735 and LZ2745 materials. The PIBSA-1, -2 and PIBSA/TEA were prepared by reacting the reactive polyisobutene (PIB) with maleic anhydride via isothermal heating at 250°C for 10 h. Then, PIBSA was heated with triethanolamine at 80°C for 2 h to give PIBSA/TEA. The structures of the prepared PIBSA-1, PIBSA-2, PIBSA/TEA, PIBSA/TEA-1, PIBSA/TEA-2, LZ2735 and LZ2745 were characterized by FTIR, 1H-, 13C-NMR spectroscopy and Gel permeation chromatography (GPC). The FTIR spectra of PIBSA-1 and -2 showed absorption carbonyl bands at 1711 and 1783 cm-1 …
Studies On The Wastewater Treatment Using Modified Down Flow Hanging Sponge (Dhs) Pilot And Its Application, M . Wasel, R . Farg, A . El - Tabl, A . Mahmoud, A . Radwan, K . Sarhan, A . Ezzat
Studies On The Wastewater Treatment Using Modified Down Flow Hanging Sponge (Dhs) Pilot And Its Application, M . Wasel, R . Farg, A . El - Tabl, A . Mahmoud, A . Radwan, K . Sarhan, A . Ezzat
Al-Azhar Bulletin of Science
In this paper the Modified Down Flow Hanging Sponge (DHS) reactor will be a good water treatment technology in the near future. It was used for excellent removal of notorious heavy metals, organic pollutants and harmful microbes. The reactor has advantages like low cost, ease of use and satisfaction level. In order to achieve these objectives, treatment scheme has been investigated. It consists of mixing a chelator with wastewater in different concentrations followed by a Down flow hanging sponge (DHS) reactor. The residual values of heavy metals are (Mn)amount decreases from 1 ppm to zero ppm (100%) after 60 min.,(Fe)decreases …
Photodecontamination Of Vat Green 1 And Dianix Blue Dyes By Mwcnts/X%Tio2 Nanocomposites Synthesized Using Evaporation Method, Badr Elsayed, Walied Mohamed, Hoda Galal, Hassan Abdelbary, Mahmoud Ahmed
Photodecontamination Of Vat Green 1 And Dianix Blue Dyes By Mwcnts/X%Tio2 Nanocomposites Synthesized Using Evaporation Method, Badr Elsayed, Walied Mohamed, Hoda Galal, Hassan Abdelbary, Mahmoud Ahmed
Al-Azhar Bulletin of Science
Study of the photocatalytic activity of multi-walled carbon nanotubes/titanium dioxide nanocomposites MWCNTs/x%TiO2 with different weight ratios of TiO2 (x = 3, 6 and 10%) synthesized using a simple modified evaporation method in decontamination of two local textile dyes (Vat Green 1 and Dianix Blue Dyes) as an industrial organic pollutants commonly used in dyeing factories was reported. The structure of the synthesized MWCNTs and MWCNTs/x%TiO2 nanocomposites with different weight ratios photocatalysts were characterized using XRD, SEM, diffused reflectance UV-Vis spectroscopic technique and N2 adsorption-desorption. Also optical band gap was estimated by Kubelka-Munk equation for MWCNTs and MWCNTs/x%TiO2 nanocomposites giving rise …
Study Of Corrosion Inhibition For Mild Steel In Hydrochloric Acid Solution By New Polyester Derivative (Glyptal), Seham Shahen
Study Of Corrosion Inhibition For Mild Steel In Hydrochloric Acid Solution By New Polyester Derivative (Glyptal), Seham Shahen
Al-Azhar Bulletin of Science
The inhibitive impact of eco-friendly Polyester (Glyptal) on the corrosion behavior of mild steel was examined. The inhibitory impacts were considered on mild steel in 1 M hydrochloric corrosive solutions, utilizing weight loss, electrochemical estimations, and Scanning Electron Microscopy (SEM) systems. The inhibitory impact was considered by adding different concentrations of inhibitors (100, 200, 400, 500, and 1000 ppm) by weight of the solution. The corrosion of steel was inhibited ceaselessly with the amount of inhibitor added. It came to a high state of inhibition with 500 and 1000 ppm of inhibitor concentration. SEM investigation uncovered that the expansion of …
Impact Of Nanosized Silica On The Physico-Mechanical Properties And Corrosion Protection Of Concrete, Elsayed Elnaggar, Tarek Elsokkary, Mostafa Shohide, Basil El - Sabbagh
Impact Of Nanosized Silica On The Physico-Mechanical Properties And Corrosion Protection Of Concrete, Elsayed Elnaggar, Tarek Elsokkary, Mostafa Shohide, Basil El - Sabbagh
Al-Azhar Bulletin of Science
Nanomaterials have an important role for enhancingthe concrete properties and inhibition of rebar corrosion in reinforced concrete. Nanosilica (NS) is one of the most effective cementitious materials, which possess high pozzolanic nature. In this work, NS was added in mix design of concrete with different ratios as; 0, 0.5, 1, 1.5, 2and 2.5 % by weight of Portland cement. Physical, mechanical properties (workability, density) were determinedfor the fresh concrete samples. While, compressive strength andmicrostructural properties of the interfacial transition zone (ITZ) between cement pastes and aggregates of concrete were investigatedfor the hardened samples.As well as electrochemical measurements (open circuit potential …
Investigation Of Bioactive Constituents And Biological Activities Of Different Fractions From Herniaria Hemistemon J.Gay, Gameel Elhagali, Atef Abozeed, Kobisi Abd Elnaser, Youssif Youssif
Investigation Of Bioactive Constituents And Biological Activities Of Different Fractions From Herniaria Hemistemon J.Gay, Gameel Elhagali, Atef Abozeed, Kobisi Abd Elnaser, Youssif Youssif
Al-Azhar Bulletin of Science
This study was carried out the phytochemical screening and evaluate antibacterial, antifungal and antioxidants effects of petroleum ether (40-60 °C), diethyl ether, chloroform, ethyl acetate, ethanol 96% and ethanol 70% fractions obtained from the aerial part of Herniaria hemostimon J. Gay. Phytochemical analysis showed the presence of terpenoids, steroids, flavonoids, alkaloids, tannins and saponins in different fractions the plant. Quantitative concentration of phenols, flavonoids, alkaloids, tannins and saponins were detected. HPLC analysis of H. hemostimon identified 21 flavonoids and 21 phenolic compounds. Successive fractionation has been carried out where Di-(2-ethylhexyl) phthalate (DEHP and protocatechuic acid were isolated and identified using …
Polyvinyl Chloride Membranes Grafting With Polyacrylic Acid Via Ar-Plasma Treatment, Alaa Fahmy, Mohamed Abu - Saied, Nasser Morgan, Walid Qutop, Hassan Abdelbary
Polyvinyl Chloride Membranes Grafting With Polyacrylic Acid Via Ar-Plasma Treatment, Alaa Fahmy, Mohamed Abu - Saied, Nasser Morgan, Walid Qutop, Hassan Abdelbary
Al-Azhar Bulletin of Science
This work explores the synthesis and properties alteration of new composite membrane system based on polyvinyl chloride (PVC) grafting with polyacrylic acid (PAA) using argon (Ar) plasma. The membranes of PVC were synthesized by solution-casting method, where PAA was deposited onto PVC using dielectric barrier discharge (DBD) at atmospheric pressure with different carrier gases such as (O2, Ar, N2, air) to get the optimum condition for grafting process of acrylic acid. Physicochemical properties were investigated as function of varied carrier gas for grafting process of PAA. ATR-FTIR has provided information on details of chemical structure of membrane, while morphological changes …
Moringa-Tio2 Nano Composite (Mt2) For Removal Of Methylene Blue (Mb) And Methyl Orange (Mo) Dyes From Their Aqueous Solutions, G. Taha, N. Ibrahim
Moringa-Tio2 Nano Composite (Mt2) For Removal Of Methylene Blue (Mb) And Methyl Orange (Mo) Dyes From Their Aqueous Solutions, G. Taha, N. Ibrahim
Al-Azhar Bulletin of Science
Removal and/or degradation of dyes existing in water samples were considered by so many researchers. The present work distinguishes by using a very low cost, highly available and eco- friendly materials as adsorbents. On the other hand, this work considered as unprecedented work where, this is the first time to use moringa seeds as a co-dopant to synthesize the moringa/titania bio-composite. Three different adsorbents (moringa seeds (M2), TiO2 (T2) and moringa/TiO2 nano composite (MT2)) were examined for removal of methylene blue (MB) and methyl orange (MO) dyes existing in water samples. Sol-gel method was made use for synthesis both of …