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Phosphoric acid and pH sensors based on polyaniline films
M.M. Ayad,N.A. Salahuddin,M.O. Alghaysh,R.M. Issa 한국물리학회 2010 Current Applied Physics Vol.10 No.1
Polyaniline (PANI)-chemically coated the electrode of quartz-crystal microbalance (QCM) has been developed for the determination of phosphoric acid (H3PO4) in the liquid phase. The sensing mechanism is based on the fact that the QCM devices produce a change in the oscillating frequency when the PANI coating the electrode of QCM interacts with different concentration of the acid. This was made during the subsequent redoping.dedoping processes of the PANI film in acid and ammonia solutions, respectively. Also,this was made during the successive redoping in different acid solutions. The QCM sensor demonstrated a rapid response to the acid with an excellent reversibility. A linear response of the sensor for different concentrations of H3PO4 was found in region of ≤1 M. The conductivity at different concentration of the acid was also determined. Finally, pH dependence on the electronic absorption of PANI phosphate film was studied which indicates that the film can be used as a sensor over a wider pH range of 3.12. This is in comparison to a PANI-sulphate film which shows limited pH absorption dependence (5.8).
Mohamad M. Ayad,Ahmed Abu El-Nasr,Jaroslav Stejskal 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.6
A cationic dye, such as methylene blue (MB), was adsorbed from water by using polyaniline nanotubes (PANI NTs) base/silica composite as adsorbent. Experiments were conducted by using the UV–visible spectroscopy and by varying parameters namely: initial concentration of MB and contact time. The percentage of color removal decreased with increase of initial dye concentration. Equilibrium data were fit to Langmuir isotherm. The Langmuir isotherm fits best the MB adsorption data on PANI NTs base/silica composite. The kinetic models: pseudo first order, pseudo-second order and the intraparticle diffusion models were applied to the experimental data. It was observed that pseudo-second order kinetic model described the adsorption process better than any other kinetic models. Results obtained indicate that PANI NTs base/silica composite could be employed as an efficient adsorbent much more than the conventional PANI base/silica composite powder for dye uptake.
Aseel M. Aljeboree,Nadher D. Radia,Layth Sameer Jasim,Abdulrahman A. Alwarthan,Mustafa M. Khadhim,Abbas Washeel Salman,Ayad F. Alkaim 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.109 No.-
New SA-g-P(AAc-co-MA)/TiO2 nanocomposite was synthesized using the free radical graft copolymerizationtechnique. The synthesized nanocomposite was characterized using FTIR, FE-SEM, XRD, TEM, TGA,and BET techniques. It was then utilized as an adsorbent for removing the Brilliant green (BG) dye froman aqueous solution. The effect of different factors like the initial concentration of the BG dye, pH of thesolution, and temperature have been studied. The experimental results were analyzed via the isothermFreundlich and Langmuir adsorption models. To have deep insight into the adsorption mechanism, thedensity functional theory (DFT) method was used. According to the analyses, the equilibrium results fittedcompletely with Freundlich isotherm; thus, the pseudo-first-order and pseudo-second-order kineticsand intra-particle diffusion models were utilized to determine the adsorption kinetic result. The optimalconditions for the studied parameters which revealed the highest adsorption were: T = 30 C, pH = 3,DGo = 6.87 kJ.mol1, DHo = 15.788 kJ.mol1, and DSo = 93.92 J.mol1.K1. The kinetics adsorptionwas consistent with the pseudo-second-order kinetic model, and the above-mentioned thermodynamicsvariables, DGo, DHo, and DSo, suggested that the adsorption of Brilliant green dye on synthesizednanocomposite was spontaneous and endothermic.
Search for the rare decay of B+→ℓ+νℓγ with improved hadronic tagging
Gelb, M.,Bernlochner, F. U.,Goldenzweig, P.,Metzner, F.,Adachi, I.,Aihara, H.,Al Said, S.,Asner, D. M.,Atmacan, H.,Aushev, T.,Ayad, R.,Babu, V.,Badhrees, I.,Bansal, V.,Behera, P.,Beleñ,o, C.,Bhu American Physical Society 2018 Physical Review D Vol.98 No.11
Observation of Ξ(1620)0 and Evidence for Ξ(1690)0 in Ξc+→Ξ−π+π+ Decays
Sumihama, M.,Adachi, I.,Ahn, J. K.,Aihara, H.,Al Said, S.,Asner, D. M.,Atmacan, H.,Aushev, T.,Ayad, R.,Babu, V.,Badhrees, I.,Bahinipati, S.,Bakich, A. M.,Bansal, V.,Beleñ,o, C.,Berger, M.,Bhardw American Physical Society 2019 Physical Review Letters Vol.122 No.7
Free Latismus Dorsi Muscle Flap with a Flow-Through Technique for Lower Limb Salvage
Wael M. Ayad,Abdelnaser Hamdi Mohammed,Hany M. Ismail,Mohamed Osama Ouf,Amr M. Elbatawy 대한수부외과학회 2019 대한수부외과학회지 Vol.24 No.2
Purpose: The lower limb injuries still one of the devastating problems in surgical practice. Complex defects may affect one major vessel that supplies the distal portion of the leg and foot. The use of the flow-through technique is a very useful tool for sure vascularization of the flap and revascularization of the distal limb at the same time. The aim of this study was to evaluate the advantages of the use of the flow-through technique for lower limb reconstruction.Methods: This retrospective study was including 15 patients complaining of post-traumatic leg and/or foot defects. Free latissimus muscle transfer with the flow-through technique was done for lower limb reconstruction. The subscapular ar-tery was anastomosed to the proximal segment of the limb vessel and the circumflex scapular artery anastomosed to the distal segment of the limb vessel. Follow-up was for six months.Results: Patients were followed for 6 months. All flaps were survived and there were no anastomotic complications.Conclusion: The use of the flow-through technique is a very useful tool for vascularization of the flap and revasculariza-tion of the distal limb at the same time.
Study of KS0 pair production in single-tag two-photon collisions
Masuda, M.,Uehara, S.,Watanabe, Y.,Adachi, I.,Ahn, J. K.,Aihara, H.,Al Said, S.,Asner, D. M.,Atmacan, H.,Aulchenko, V.,Aushev, T.,Ayad, R.,Babu, V.,Badhrees, I.,Bansal, V.,Behera, P.,Berger, M.,Bhardw American Physical Society 2018 Physical Review D Vol.97 No.5
Production cross sections of hyperons and charmed baryons from e+e− annihilation near s=10.52 GeV
Niiyama, M.,Sumihama, M.,Nakano, T.,Adachi, I.,Aihara, H.,Al Said, S.,Asner, D. M.,Aulchenko, V.,Aushev, T.,Ayad, R.,Babu, V.,Badhrees, I.,Bakich, A. M.,Bansal, V.,Barberio, E.,Berger, M.,Bhardwaj, V. American Physical Society 2018 Physical Review D Vol.97 No.7
Measurement of the decays Λc→Σππ at Belle
Berger, M.,Schwanda, C.,Suzuki, K.,Adachi, I.,Ahn, J. K.,Aihara, H.,Al Said, S.,Asner, D. M.,Atmacan, H.,Aulchenko, V.,Aushev, T.,Ayad, R.,Babu, V.,Badhrees, I.,Bakich, A. M.,Bansal, V.,Behera, P.,Bha American Physical Society 2018 Physical review. D Vol.98 No.11