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Preparation and Antibacterial Activity of Superhydrophobic Modified ZnO/PVC Nanocomposite

Journal of Bionic Engineering 2022年第1期19卷 139-154页

作者： Muntadher Ismail Rahmah Raad Saadon Sabry wisam jafer aziz Medical Instrumentation Engineering Department Al-Esraa University CollegeBaghdad10001Iraq Physics Department College of ScienceMustansiriyah UniversityBaghdad10001Iraq

We fabricated a superhydrophobic modified ZnO/PVC nanocomposite cluster with antibacterial properties using the chemical precipitation method and selected solvent/non-solvent(THF/ethanol)to *** effects of ethanol content(47%,50%,53%,and 56%)on nanocomposite morphology and Water Contact Angles(WCAs)were *** measurements confirmed the polycrystalline structure of ZnO with a wurtzite hexagonal phase,and EDX results indicated the presence of all element *** analysis of specimens revealed a rough surface structure resembling a cluster of NPs,and that structure was dominant when the ethanol content increased to 56%.The WCA increased on the superhydrophobic nanocomposite as ethanol content increased,and an optimum WCA(160°±2°)was obtained at an ethanol content of 56%.Antibacterial activity was tested on the superhydrophobic and hydrophobic states,and the superhydrophobic specimens showed good inhibition against Klebsiella *** Staphylococcus ***,the hydrophobic specimens demonstrated no antibacterial activity against *** promising results can inform the development of nanocomposites for many environmental applications.

关键词： ZnO PVC Superhydrophobicity Antibacterial WCA

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Management of Ovarian Cystic Tumor: Diagnosis, Management, and Its Follow-Up-Case Presentation of Three Patients and Literature Review

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Open Journal of Obstetrics and Gynecology 2020年第1期10卷 25-40页

作者： Babacar Biaye Jacque Raiga Moussa Diallo Reda jafer Abdoul aziz Diouf Bernard Benoit Bruno Carbone Gynecological and Obstetric Clinic of Aristide Hospital Le Dantec of Dakar Dakar Senegal

The diagnosis and management of ovarian cystic tumor is sometimes difficult. In this manuscript, we wish to summarize this issue by showing three cases. Ultrasound and Color Doppler are very useful to diagnose the presence of this tumor but also to distinguish between benign and malignant. Pelvic MRI is also a strong tool and is sometimes mandatory. HE4 and CA125 are often useful as a serum diagnostic marker of malignancy, but not always so. Recently, laparoscopic management has gained popularity;however, great caution should be exercised during laparoscopic operative procedures, as this may lead to intraperitoneal malignant cell spreading/proliferation when the tumor is malignant. During the surgery of malignant tumor, irrespective of laparoscopic or laparotomic, intraperitoneal rupture should be avoided. Since the final diagnosis must be made by histological examination, the patient must always be informed of this possibility.

关键词： Ovarian Cyst Tumor Diagnosis Management Prognosis

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