Allergic fungal rhinosinusitis caused by Aspergillus flavus

Allergic fungal rhinosinusitis is a chronic inflammatory disorder of the sinonasal mucosa, with or without nasal polyps, which is frequently associated with microbial colonization including fungi. A case of fungal rhinosinusitis in Aseer area, Saudi Arabia, is described. The patient was admitted with common symptoms including nasal obstruction accompanied by itching, sneezing, rhinorrhea, epistaxis and recurrent headache. The patient was examined clinically and by CT scan. Nasal sinus swabs and a biopsy specimen were submitted for microbiological analysis. Polyps were surgically removed during functional endoscopic sinus surgery. Histopathology showed the presence of acute and chronic inflammatory cell infiltrates (rich in eosinophils) in the covering epithelium layers. Aspergillus flavus was isolated and identified from the lesions. The patient was discharged after showing good recovery, and home follow-up revealed no recurrences.Keywords: Paranasal sinuses, Polypoidal disease, Rhinorrhea, Fungi, Endoscopic sinus surger

خصائص الدعوة إلى الله: نماذج مقارنة من دعوات أولي العزم من الرسل Attributes of the Call to Allah: Comparative Examples of the Calls of the First-Willed Messengers

Allah the Almighty made Islam as a final call of previous ones and the Holy Quran is an existing companionship forever. So, Islamic call has many characteristics which made it valid for all time and place and comprehensive for all life requirements, this research explains the most important sources from which Islamic call derived its characteristics, and displaying those properties sources from which Islamic call derived its characteristics, and displaying those properties which distinct it from prophet with hardihood, then explaining the common characteristics between prophet with hardihood and Islamic call, finally to conclude to a result that Allah the Almighty put in this Islamic call characteristics and advantages which makes it remaining till doomsday, so that such characteristics were not available at other divinc calls, note that the followed method in this research is both inductive and hypothetical

Experimental Investigation of Fabricated Graphene Nanoplates/Polystyrene Nanofibrous Membrane for DCMD

In recent decades, the fabrication of composite membranes using nanoparticles has played a vital role in membrane distillation (MD) technique. It could make available membranes with superior characteristics as excellent candidates for MD technique. The most well-known obstacles regarding the MD method are the low productivity and high cost. Thus, fabricating membranes with superior properties is a significant challenge. In the current study, a composite membrane has been fabricated using 0.25, 0.5, and 0.75 weight percent (wt.%) of graphene nanoparticles (GNPs) with polystyrene (PS) as a base polymer and characterized using SEM, FTIR, and contact angle. The characterization results prove the successful fabrication using electrospinning and the validity of the fabricated membranes to be applied to direct contact membrane distillation (DCMD). In addition, a DCMD experimental setup has been designed to examine the performance of the fabricated membranes and compare the performance of blank PS with composite PS/GNPs membranes. The results show that all fabricated membranes produced an approximately similar average flux of about 10 kg/m2 h, while the highest GNPs wt.% showed the highest salt rejection. Accordingly, this composite membrane has been examined at different operating parameters and showed stable performance. Moreover, feed temperature and the rate of flow have a positive impact on the overall performance of the DCMD

Modeling and Simulation of Fabricated Graphene Nanoplates/Polystyrene Nanofibrous Membrane for DCMD

Membrane distillation is an active technique that provides pure water with very good rejection and could be applied to water of extremely high salinity. The low productivity of membrane distillation needs intensive efforts to be competitive with other desalination techniques. In this current study, a composite (PS/GNP) membrane, which is composed of polystyrene (PS) based and 0.25% weight percent graphene nanoplates (GNP) has been fabricated via electrospinning and compared with the blank PS membrane. SEM, FTIR, contact angle and porosity characterization have been performed, and the results show that the validity of the predefined conditions, and the contact angle of the composite membrane, which is found to be 91.68°, proved the hydrophobic nature of the composite membrane. A numerical simulation using Ansys 2020 software has been introduced to study the performance of the fabricated composite membrane when used in direct contact membrane distillation (DCMD). The numerical model has been validated with experimental work from the literature and showed an excellent match. The blank PS and composite PS/GNP membranes have been investigated and compared at different operating conditions, i.e., hot water supply temperature and system flow rate. The results show that the composite PS/GNP membrane outperforms the blank PS membrane at all studied operating conditions