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Yehia, A. M., "Development and validation of new spectrophotometric ratio H-point standard addition method and application to gastrointestinal acting drugs mixtures", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 109, pp. 193–200, 2013. saa10294.pdf
Yehia, S. A., O. N. El-Gazayerly, and E. B. Basalious, "Design and in vitro/in vivo evaluation of novel mucoadhesive buccal discs of an antifungal drug: Relationship between swelling, erosion, and drug release", AAPS PharmSciTech, vol. 9, no. 4, pp. 1207-1217, 2008. AbstractWebsite

Two groups of fluconazole mucoadhesive buccal discs were prepared: (a) Fluconazole buccal discs prepared by direct compression containing bioadhesive polymers, namely, Carbopol 974p (Cp), sodium carboxymethyl cellulose (SCMC), or sodium alginate (SALG) in combination with hydroxypropyl methylcellulose (HPMC) or hydroxyethyl cellulose (HEC). (b) Fluconazole buccal discs prepared by freeze drying containing different polymer combinations (SCMC/HPMC, Cp/HPMC, SALG/HPMC, and chitosan/SALG). The prepared discs were evaluated by investigating their release pattern, swelling capacity, mucoadhesion properties, and in vitro adhesion time. In vivo evaluation of the buccal disc and in vivo residence times were also performed. Fluconazole salivary concentration after application of fluconazole buccal systems to four healthy volunteers was determined using microbiological assay and high-performance liquid chromatography. SCMC/HPMC buccal disc prepared by direct compression could be considered comparatively superior mucoadhesive disc regarding its in vitro adhesion time, in vivo residence time, and in vitro/in vivo release rates of the drug. Determination of the amount of drug released in saliva after application of the selected fluconazole disc confirmed the ability of the disc to deliver the drug over a period of approximately 5 h and to reduce side effects and possibility of drug interaction encountered during systemic therapy of fluconazole, which would be beneficial in the case of oral candidiasis. © American Association of Pharmaceutical Scientists 2008.

Yehia, N., A. - S. Arafa, A. A. E. Wahed, A. A. El-Sanousi, M. Weidmann, and M. A. Shalaby, "Development of reverse transcription recombinase polymerase amplification assay for avian influenza H5N1 HA gene detection", Journal of Virological Methods, vol. 223, pp. 45–49, 2015.
Yehia, R. S., and S. Rodriguez-Couto, "Discoloration of the azo dye Congo Red by manganese-dependent peroxidase from Pleurotus sajor caju", Applied Biochemistry and Microbiology, vol. 53, no. 2, pp. 222–229, Mar, 2017. AbstractWebsite

This paper describes the production of ligninolytic enzymes by the white-rot fungus Pleurotus sajor caju under solid-state fermentation conditions using a cost-effective medium consisting of agro-industrial wastes. From the different agro-industrial wastes tested (i.e. orange, banana, mango and cantaloupe peels), banana peels led to the highest manganese-dependent peroxidase (MnP) activity (6.3 U/mL on the 10 day). MnP from banana peel cultures was purified and applied to the discoloration of the azo dye Congo Red (CR). The optimum temperature, pH and enzyme concentration for maximum discoloration (i.e. 95{%} in 1 h) were found to be 35°C, 4.0, and 1.4 U/mL, respectively. In addition, the phytotoxicity (with respect to Sorghum vulgare and Phaseolus radiatus seeds) of CR was considerably reduced after the treatment of plant material with MnP produced by P. sajor caju. The products obtained after discoloration of CR were characterized using GC/MS as 8-amino naphthol 3-sulfonic acid, 3-hydroperoxy 8-nitrosonaphthol, p-p’-dihydroxybiphenyl. Therefore, this approach holds promise for the production and application of MnP from P. sajor caju on a larger scale.

Yehia, N., A. - S. Arafa, A. A. E. Wahed, A. A. El-Sanousi, M. Weidmann, and M. A. Shalaby, "Development of reverse transcription recombinase polymerase amplification assay for avian influenza H5N1 HA gene detection", Journal of virological methods, vol. 223: Elsevier, pp. 45–49, 2015. Abstract
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YM, E. S., "Differential corneal thickness in paediatric eyes implanted with a glaucoma drainage device", American Academy of Ophthalmology Meeting, Chicago, 2014.
Younes, K. M., E. F. El-Kady, and E. S. Elzanfaly, "Determination of Febuxostat in Human Plasma Using RP-LC–UV Method", Journal of Chromatographic Science, vol. 54, issue 6, pp. 1022-7, 2016.
Younes, K. M., "Development and Validation of Kinetic Spectrophotometric Method for the Determination of Lamivudine in pure and commercial tablets", Der Pharma Chemica, vol. 6, no. 2: Scholars Research Library, pp. 155–166, 2014. Abstract
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Younis, S. M., and E. - S. S. A. F. Y. F. and G. M. Nasr, "Development and evaluation of a whole crop grain harvesters 1- Development of a whole crop grain harvester.", MJAE, vol. 14, issue 1, 1997. Abstract
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Younis, S. M., R. S. M. Sheded, T. H. Ali, and M. M. Ibrahim, "Development of a drum seeding metering unit for sowing vegetable plug tray seedlings", Plant Archives, vol. 20, issue Supplement 1, pp. 3119-3130, 2020. 204-3119-3130.pdf
Younis, S. M., G. M. Nasr, and E. - S. A. F. Y. F. and Sharobeem, "Development and evaluation of a whole crop grain harvesters 2- Evaluation of a whole crop grain harvester", MJAE, vol. 15, issue 1, 1998. Abstract
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Younis, S. M., and G. M. A. and G. M. Nasr, "Development of cotton transplanter", The 12th Annual Conference of MJAE, 15-16 Oct., 2004. Abstract
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Younis, S. M., K. M. Abdelbary, S. A. ELMesery, and A. A. Abdelahady, "DESIGN AND EVALUATION A HAND-HELD MACHINE FOR OLIVES HARVESTING", Misr Journal of Agricultural Engineering, vol. 34 , issue 1, pp. 103 - 122, 2017. DESIGN AND EVALUATION A HAND-HELD MACHINE FOR OLIVES HARVESTING.pdf
Yousef, W. H., D. K. Ibrahim, and E. Abo El-Zahab, "Discrimination of Internal Faults and Inrush Currents For Large Modern Power Transformer", Proceedings of 14th International Middle East Power Systems Conference (MEPCON 2010), Cairo, Egypt, 2010. Abstract

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Yousef, H. A., A. A. Afify, H. M. Hasan, and A. Abdel Meguid, "DNA damage in hemocytes of Schistocerca gregaria (Orthoptera: Acrididae) exposed to contaminated food with cadmium and lead.", Natural Science, vol. 2, issue 4, pp. 292-297, 2010.
Yousef, W. H., D. K. Ibrahim, and E. Abo El-Zahab, "Discrimination of Internal Faults and Inrush Currents For Large Modern Power Transformer", 14th International Middle East Power Systems Conference (MEPCON’10), Cairo University, Egypt, 2010. Abstract

This paper presents a differential protection approach for large high quality power transformers that have
low inrush currents of about 3.14 times rated currents. Such transformers have low second harmonic level, which results in conventional differential protection malfunction. A scheme for internal faults and inrush currents discrimination based on both discrete Fourier transform DFT and discrete Wavelet Transform
DWT is proposed. The proposed method has been designed based on the percentage of the sum of wavelet transform coefficients D1 and fundamental differential current (based on a 1 kHz sampling
rate). It has been tested by extensive EMTP/ ATP simulations for different faults and switching conditions on El Tebbin Power Plant 220/21 kV generator/power transformer. It is proved that it has a high capability for discrimination even in the case of inrush with low second harmonic content and internal fault currents with high second harmonic component. All tests proved that the proposed scheme is reliable, accurate, and fast.

Yousef, R. H., N. Elrashidi, sahar khairat, M. Gaafar, M. E. Nady, M. balah, and N. soiiman, "Detection of Mycobacterium tuberculosis and drug resistance by GeneXpert® MTB/RIF and Anyplex™ II MTB/MDR in a tertiary care hospital", Medical sciences, vol. 24, issue 105, pp. 3003-3011, 2020.
Yousef, H. A., A. Afifi, H. M. Mohamed, and A. Abdel Meguid, "DNA damage in haemocyte of Schistocerca gregaria (Orthoptera:Acrididae),exposed to contaminated food with Cd and Pb", Natural Science, , vol. Vol.2(4) , pp. p:292-297, 2010. dna_damage_in_hemocytes.pdf
Yousef, M., A. Hosny, W. Gamil, M. ADEL, H. M. Fahmy, S. M. Darweesh, and H. Mostafa, "Dual-Mode Forward Collision Avoidance Algorithm Based on Vehicle-to-Vehicle (V2V) Communication", IEEE International Midwest Symposium on Circuits and Systems (MWSCAS 2018), Windsor, Ontario, Canada, pp. 739-742, 2018. [PDF]
Yousif, M., I. Amin, and Y. Ibrahim, "D3-Modules", Communications in Algebra, vol. 42, pp. 578–592, 2014.
Yousof, H. - A. S., M. M. Khater, S. H. El-Sayed, and A. A. El-Badry, "Diagnostic biomarkers in murine Cryptosporidiosis: dose- and age-related infection", Journal of Parasitic Diseases, pp. 1–6, 2017. AbstractWebsite

Increasing prevalence of Cryptosporidium raises the importance to explore different aspects of its infection. In the absence of reproducible in vitro culturing, animal model is the only experimental method to study Cryptosporidium. Our study evaluated Cryptosporidium infection using coproscopy, copro-antigen and copro-DNA for early detection of murine cryptosporidiosis. Hundred and forty albino mice (neonates and adult) were divided into two groups, control group received sterile PBS solution, and infected groups were inoculated with molecularly characterized Cryptosporidium parvum oocysts and further subdivided into three subgroups for infectious dose response detection. Mice fecal samples were collected every 4 h on the first day and then daily and examined for fecal oocysts, copro-antigen and copro-DNA. Four mice from each subgroup were killed at 12, 24 and 48 h post-infection (P-I), and their intestines were examined for cryptosporidial mucosal DNA. Cryptosporidium copro-antigen and copro-DNA were detected 4 and 8 h P-I in infected neonatal and adult mice, respectively, and intestinal mucosal DNA was detected after 12 h in both. Microscopy was able to detect oocysts 48 h P-I. Inoculated C. parvum oocysts were recovered in feces of infected mice without genotypic changes. Neonate mice showed higher susceptibility for cryptosporidial infection than adults without statistical differences for the given infectious doses. Both copro-immunoassay and copro-nPCR assays can early detect Cryptosporidium infection; however, nPCR was able to identify Cryptosporidium species, making nPCR a reliable biomarker for early detection in murine model.

Yousof, H. - A. S., M. M. Khater, S. H. El-Sayed, and A. A. El-Badry, "Diagnostic biomarkers in murine Cryptosporidiosis: dose-and age-related infection", Journal of Parasitic Diseases, vol. 41, issue 3: Springer India, pp. 831-836, 2017. Abstract
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