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Abdominal Pregnancy, Case Report from Latifa Hospital DHA, Dubai, UAE

Open Journal of Obstetrics and Gynecology 2018年第12期8卷 1198-1204页

作者： Atif Bashir E. Fazari vidya raman Hala Bashir Faiqha M. Azim Faiqha M. Azim Sawsan Kh. Halou Latifa Hospital Dubai Health Authority Dubai UAE Faculty of Medicine University of Medical Sciences & Technology Khartoum Sudan

Abdominal pregnancy is a rare form of ectopic pregnancy. A high index of suspicion enables early diagnosis and prompt management. Ultrasound is a gold standard tool for diagnosis and Magnetic Resonance imaging has a l... 详细信息

关键词： Abdominal Pregnancy Ectopic Pregnancy Fetal Morbidity Maternal Mortality

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Potential application of graphene oxide and Aspergillus niger spores with high adsorption capacity for recovery of europium from red phosphor,compact fluorescent lamp and simulated radioactive waste

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Journal of Rare Earths 2023年第1期41卷 157-166页

作者： B.Arunraj vidya Rajesh N.Rajesh Department of Chemistry Birla Institute of Technology and Science-PilaniHyderabad CampusShameerpetHyderabad 500078India Department of Biological Sciences Birla Insttute of Technology and Science-PilaniHyderabad CampusShameerpetHyderabad 500078India

The recovery of rare earth elements(REEs) is a global challenge and the mining of rare earths has serious environmental implications due to the toxic waste released post mining.Hence,the rising demand for rare earths and their far reaching electronic applications necessitates an effective strategy to recover the REEs from more viable sources.In this work,the graphene oxide-Aspergillus niger spores(GO-A.niger spores) blend was utilized for adsorptive recovery of a precious rare earth Eu(Ⅲ) and the adsorption variables like pH of the medium,adsorbent dosage,sorption kinetics,thermodynamics,and isotherm were optimized for the developed bioso rbent.The adsorption process suits the Langmuir isotherm model with a maximum adsorption capacity of 147.3 mg/g.The pseudo-second-order kinetics is a perfect fit to describe the adsorption process.The results obtained through the Van’t Hoff plot show negative free energy change(ΔG^(0)) which implies the spontaneity of the adsorption process.The negative standard enthalpy change(ΔH^(0)) values show that the nature of the adsorption process is exothermic.The analytical characterizations including Fourier transform infrared spectroscopy(FTIR),raman,X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),Brunauer-Emmett-Teller(BET),thermal gravimetric analysis(TGA),and scanning electron microscopy-energy dispersive X-ray spectroscopy(SEM-EDX) were employed to study the biosorbent.The features of GO-A.niger spores biosorbent were applied to recover Eu(Ⅲ) from real samples such as fluorescent lamp phosphor,red phosphor powder,and a simulated radioactive waste solution.

关键词： Europium Graphene oxide Aspergillus niger Phosphor Radioactive waste Rare earths

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