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Novel Sustainable Cellulose Acetate Based Biosensor for Glucose Detection

Journal of Renewable Materials 2024年第2期12卷 369-380页

作者： M.F.Elkady E.M.El-Sayed Mahmoud Samy Omneya A.Koriem h.shokry hassan Chemical and Petrochemical Engineering Department Egypt-Japan University of Science and TechnologyNew Borg El-ArabAlexandriaEgypt Fabrication Technology Research Department Advanced Technology and New Materials Research InstituteCity of Scientific Research and Technological Applications(SRTA-City)New Borg El-ArabAlexandria21934Egypt Department of Public Works Engineering Faculty of EngineeringMansoura UniversityMansoura35516Egypt Environmental Engineering Department Egypt-Japan University of Science and TechnologyNew Borg El-ArabAlexandriaEgypt Electronic Materials Research Department Advanced Technology and NewMaterials Research InstituteCity of Scientific Research and Technological Applications(SRTA-City)New Borg El-ArabAlexandria21934Egypt

In this study,green zinc oxide(ZnO)/polypyrrole(Ppy)/cellulose acetate(CA)film has been synthesized via solvent *** film was used as supporting material for glucose oxidase(GOx)to sensitize a glucose *** nanoparticles have been prepared via the green route using olive leaves extract as a ***/Ppy nanocomposite has been synthesized by a simple in-situ chemical oxidative polymerization of pyrrole(Py)monomer using ferric chloride(FeCl3)as an oxidizing *** produced materials and the composite films were characterized using X-ray diffraction analysis(XRD),scanning electron microscope(SEM),Fourier transform infrared(FTIR)and thermogravimetric analysis(TGA).Glucose oxidase was successfully immobilized on the surface of the prepared film and then ZnO/Ppy/CA/GOx composite was sputtered with platinum electrode for the current determination at different initial concentrations of *** measurements proved the suitability and the high sensitivity of the constructed biosensor for the detection of glucose levels in different *** performance of the prepared biosensor has been assessed by measuring and comparing glucose concentrations up to 800 *** results affirmed the reliability of the developed biosensor towards real samples which suggests the wide-scale application of the proposed biosensor.

关键词： Biosensors composite films glucose polypyrrole green ZnO cellulose acetate

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Thrust characteristics of nano-carbon/Al/oxygenated salt nanothermites for micro-energetic applications

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Defence Technology（防务技术） 2023年第12期30卷 55-69页

作者： Ahmed Fahd Alex Baranovsky Charles Dubois Jamal Chaouki Sherif Elbasuney Shady shokry Chemical Engineering Department Ecole Polytechnique de MontrealMontrealH3C 3A7Canada Energetic Materials and Nanotechnology Research Center Technical Research CenterCairo11765Egypt Mechanical and Mechatronics Engineering Department University of WaterlooOntarioN2L 3G1Canada head of Nanotechnology Research Center Military Technical CollegeCairo11767Egypt Laser and Optoelectronics Research Center Technical Research CenterCairo11765Egypt

Combustion within small motors is key in the application-specific development of nanothermite-based micro-energetic systems. This study evaluates the performance of nanothermite mixtures in a converging-diverging nozzle and an open tube. Mixtures were prepared using nano-aluminum(n-Al),potassium perchlorate(KClO_(4)), and different carbon nanomaterials(CNMs) including graphene-oxide(GO), reduced GO, carbon nanotubes(CNTs) and nanofibers(CNFs). The mixtures were packed at different densities and ignited by laser beam. Performance was measured using thrust measurement,high-speed imaging, and computational fluid dynamics modeling, respectively. Thrust, specific impulse(ISP), volumetric impulse(ISV), as well as normalized energy were found to increase notably with CNM content. Two distinctive reaction regimes(fast and slow) were observed in combustion of low and high packing densities(20% and 55%TMD), respectively. Total impulse(IFT) and ISPwere maximized in the 5%GO/Al/KClO_4 mixture, producing 7.95 m N·s and 135.20 s respectively at 20%TMD, an improvement of 57%compared to a GO-free sample(5.05 m N·s and 85.88 s). CFD analysis of the motors over predicts the thrust generated but trends in nozzle layout and packing density agree with those observed experimentally;peak force was maximized by reducing packing density and using an open tube. The numerical force profiles fit better for the nozzle cases than the open tube scenarios due to the rapid nature of combustion. This study reveals the potential of GO in improving oxygenated salt-based nanothermites,and further demonstrates their applicability for micro-propulsion and micro-energetic applications.

关键词： Nanothermites Graphene oxide Reduced graphene oxide Carbon nano material Oxygenated salts Laser ignition Computational fluid dynamics

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Bilateral same-session intravitreal injections of antivascular endothelial growth factors

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International Journal of Ophthalmology(English edition) 2014年第6期7卷 1017-1021页

作者： Nakhleh E.Abu-Yaghi Ahmed N shokry Rami h Abu-Sbeit Department of Ophthalmology Faculty of Medicinethe University of Jordan

AIMTo document the indications, safety and possible complications of bilateral same-session intravitreal anti-vascular endothelial growth factor (VEGF) injections performed in the ophthalmic operating room.

关键词： anti-vascular endothelial growth factor diabetic macular edema age-related macular degeneration endophthalmitis visual acuity

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叶绿素染料一浴法上染聚酯/棉混纺织物

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国际纺织导报 2013年第1期41卷 59-60,62页

作者： G.M.shokry h.S.El-Khatib 于萍阿勒旺大学

采用天然叶绿素-100-WSP染料对经Tanafex SR阳离子改性的聚酯/棉混纺织物实施染色。研究了对染色试验影响最大的有效参数。采用不同浓度的媒染剂对织物进行同浴媒染,以改善织物的色牢度,并对染色织物的着色力及色牢度进行了评估。

关键词：叶绿素一浴法阳离子改性着色力聚酯棉混纺织物

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经羊膜腔婴儿饲管输注治疗产时胎儿呼吸窘迫

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世界核心医学期刊文摘（妇产科学分册） 2005年第12期1卷 58-59页

作者： Abdel-Aleem h. Amin A.F. shokry M. Radwan R.A. 张旸 Department of Obstetrics and Gynecology Assiut University Hospital Assiut Egypt

Objective: To evaluate the role of therapeutic amnioinfusion using a pediatric feeding tube in cases of intrapartum fetal distress. Methods: A randomized clinical trial including 438 women admitted in labor at Assiut University hospital with nonreassuring fetal heart rate tracing. Using sealed opaque envelopes, the women were randomized to 2 groups. In the amnioinfusion group they underwent transcervical amnioifusion (1000 mL of warmed sterile saline solution) in addition to conventional treatment. In the control group they received conventional treatment only. The primary outcome was cesarean section rate for fetal distress. The secondary outcomes were neonatal and maternal complications. Results: The amnioinfusion group showed a significant reduction in the rate of cesarean section for fetal distress (relative risk [RR], 0.7; 95% confidence interval [CI], 0.6- 0.83), and a 30% reduction in abnormal fetal heart rate patterns (RR, 0.7; 95% CI, 0.6- 0.83). Significantly fewer newborns had Apgar scores less than 7 at 1 and 5 min in the amnioinfusion group than in the control group (RR, 0.38; 95% CI, 0.26- 0.55 and RR, 0.31; 95% CI, 0.15- 0.64, respectively). Significantly fewer newborns had meconium below the vocal cords in the amnioinfusion group than in the control group (RR, 0.36; 95% CI, 0.13- 0.97). Moreover, 14 newborns in the amnioinfusion group needed admission to the intensive care unit vs. 31 newborns in the control group. There were no significant differences between the 2 groups regarding the incidence rates of uterine hypertonus and maternal temperature higher than 38° C. Conclusion: Therapeutic amnioinfusion is a simple and effective intervention that reduces the rates of cesarean section for intrapartum nonreassuring fetal heart tracing. In under-resourced settings, it can be performed using inexpensive catheters.

关键词：羊膜腔呼吸窘迫产时胎心监护饲管母体并发症温盐水随机临床试验大学医院胎粪

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Electrochemical Polymerization of Acrylamide Film on Mild Steel Electrode for Corrosion Protection

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Journal of Chemistry and Chemical Engineering 2010年第6期4卷 35-43页

作者： hanaa shokry Chemistry Department Faculty of Science Kafer El-Sheikh University Kafer El-Sheikh 33511 Egypt

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