Publications

Export 6921 results:
Sort by: [ Author  (Asc)] Title Type Year
[A] B C D E F G H I J K L M N O P Q R S T U V W X Y Z   [Show ALL]
Y
Yassien, M. A., H. M. Abdallah, A. M. El-Halawany, and A. A. M. Jiman-Fatani, Anti-tuberculous activity of Treponemycin produced by a Streptomyces strain MS-6-6 isolated from Saudi Arabia, , vol. 20, issue 2: Multidisciplinary Digital Publishing Institute, pp. 2576 - 2590, 2015. Abstract
n/a
Yassien, M. A., H. M. Abdallah, A. M. El-Halawany, and A. A. M. Jiman-Fatani, "Anti-tuberculous activity of treponemycin produced by a streptomyces strain MS-6-6 isolated from Saudi Arabia.", Molecules (Basel, Switzerland), vol. 20, issue 2, pp. 2576-90, 2015. Abstract

A Streptomyces strain MS-6-6 with promising anti-tuberculous activity was isolated from soil samples in Saudi Arabia. The nucleotide sequence of its 16S rRNA gene (1426 bp) evidenced a 100% similarity to Streptomyces mutabilis. Through an anti-tuberculous activity-guided approach, a polyketide macrolide was isolated and identified as treponemycin (TP). The structure of the isolated compound was determined by comprehensive analyses of its 1D and 2D NMR as well as HRESI-MS. In addition to the promising anti-tuberculous activity (MIC = 13.3 µg/mL), TP showed broad spectrum of activity against the Gram positive, Gram negative strains, and Candida albicans. Improvement of TP productivity (150%) was achieved through modification in liquid starch nitrate medium by replacing KNO3 with corn steep liquor and yeast extract or tryptone, and removing CaCO3 and K2HPO4. The follow up of TP percentage as well as its metabolites profile for each media was assessed by LC/DAD/MS.

Yassin, T., K. H. Bahaaeldin, A. Husein, and H. E. Minawi, "Assessment and management of urethrocutaneous fistula developing after hypospadias repair", Annals of Pediatric Surgery, vol. 7, no. 2: Wolters Kluwer, pp. 88–93, 2013. Abstract
n/a
Yassin, A., M. Tawfik, and R. Hashem, "antibiotic resistance patterns among common Gram positive and Gram negative pathogens in clinical isolates from major hospitals in cairo, Egypt", World wide research efforts in the fighting against Microbial pathogens: Universal publisher.com, 2013.
Yassin, A., M. Tawfeek, R. Hashem, Y. Nagy, Y. Hashem, S. AbdelSalam, A. Emad, Y. Ragab, A. Kholiefy, A. Shawky, et al., "Antibiotic resistance patterns among common Gram positive and Gram negative pathogens in clinical isolates from major hospitals in Cairo, Egypt", II international conference on antimicrobial research, Lisbon, portugal, Boca Raton, Florida, USA, BrownWalker Press,, pp. 34-39, 2013.
Yassin, H. M., and M. A. R. Shafei, "Active and Reactive Power Control of Marine Current Turbines with Flywheel Energy Storage System Using Meta-heuristic Technique", 2019 21st International Middle East Power Systems Conference (MEPCON): IEEE, pp. 417-422, 2019. Abstract
n/a
Yassin, A., H. H. Zedan, and et al, "Antibiotic resistance patterns among common Gram positive and Gram negative pathogens in clinical isolates from major hospitals in Cairo, Egypt.", Worldwide Efforts in Fighting against Microbial pathogens: From Basic Research to Technological Developments”, A. Mendez-Vilas (ed.), Florida, Brown Walker Press, 2013.
Yassin, A., M. Tawfeek, R. Hashem, Y. Nagy, Y. Hashem, S. A. Salam, A. Emad, Y. Ragab, A. Kholiefy, A. Shawky, et al., "Antibiotic resistance patterns among common Gram positive and Gram negative pathogens in clinical isolates from major hospitals in Cairo, Egypt", Worldwide Research Efforts in the Fighting against Microbial Pathogens: From Basic Research to Technological Developments, Boca Raton, Florida, USA, BrownWalker Press, pp. 34-39, 2013.
Yassin, H. M., R. R. Abdel-Wahab, and H. H. Hanafy, "Active and Reactive Power Control for Dual Excited Synchronous Generator in Wind Applications", IEEE ACCESS, vol. 10, pp. 29172 - 29182, 2022.
Yehia, R. S., and A. M. Saleh, "Antifungal activity of rice straw extract on some phytopathogenic fungi", African Journal of Biotechnology, vol. 11, no. 71, pp. 13586–13590, 2012. Abstract

n/a

Yehia, S., A. El-Saadi, and M. M. Galal, "Application of algae to free surface wetlands for effluent reuse", Water and Environment Journal, vol. 35, issue 2, pp. 748-758, 2021.
Yehia, R. S., and A. M. Saleh, "Antifungal activity of rice straw extract on some phytopathogenic fungi", African Journal of Biotechnology, vol. 11, no. 71, pp. 13586–13590, 2012. Abstract
n/a
Yehia, S. G., and N. Y. Salem, "Assessment of Some Biochemical Parameters in Dairy Cows during Transition Period", Inter J Vet Sci, 2015.
Yehia, A. M., and M. A. K. El-Rahman, "Application of normalized spectra in resolving a challenging Orphenadrine and Paracetamol binary mixture", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 138, pp. 21-30, 2015. spectrochimica_acta_138_2015.pdf
Yehia, R. S., and A. M. Saleh, "Antifungal activity of rice straw extract on some phytopathogenic fungi", African Journal of Biotechnology, vol. 11, no. 71, pp. 13586–13590, 2012. Abstract

n/a

Yehia, A. M., H. T. Elbalkiny, S. ’aM. Riad, and Y. S. Elsaharty, Application of Chemometrics for Spectral Resolving and Determination of Three Analgesics in Water Samples, , vol. 103, issue 1, pp. 257 - 264, 2020/01/01. AbstractWebsite

Background: Chemometrics is a discipline that allows the spectral resolution of drugs in a complicated matrix (e.g., environmental water samples) as an alternative to chromatographic methods. Objective: Three analgesics were traced in wastewater samples with simple and cost-effective multivariate approaches using spectrophotometric data. Methods and Results: Four chemometric approaches were applied for the simultaneous determination of diclofenac, paracetamol, and ibuprofen. Partial least squares (PLS), principal component regression (PCR), artificial neural networks (ANN), and multivariate curve resolution (MCR)–alternating least squares (ALS) were selected. The presented methods were compared and validated for their qualitative and quantitative analyses. Moreover, statistical comparison between the results obtained by the proposed methods and the official methods showed no significant differences. Conclusions: The proposed multivariate calibrations were accurate and specific for quantitative analysis of the studied components. MCR-ALS is the only method that has the capacity for both the quantitative and qualitative analysis of the studied drugs. Highlights: Four chemometric approaches were used for analysis of severally overlapped ternary mixture of three analgesics. The analytical performance of PCR, PLS, MCR-ALS, and ANN was compared and validated in terms of root mean square error of calibration (RMSEC), SE of prediction, and recoveries. ANN gave the highest predicted concentrations with the lowest RMSEC and root mean square error of prediction. MCR-ALS has the capacity for both qualitative and quantitative measurement. The methods have been effectively applied for real samples and compared to official methods.

and Yehia S. Abd El-alkhoris, Mohamed S. Abbas, A. S. M. F. M. A., "Assessment of Water and Sediments Pollution in Maruit Lake, Egypt", Egyptian Journal of Aquatic Biology and Fisheries, vol. 24, issue 1, pp. 145-160, 2020. Abstract
n/a
Yelamarthi, K., A. Abdelgawad, and A. Khattab, "An Architectural Framework for Low-Power IoT Applications", International Conference on Microelectronics (ICM), Cairo, Egypt, IEEE , 2016.
Yeung, A. W. K., N. T. Tzvetkov, O. S. El-Tawil, S. G. Bungǎu, M. M. Abdel-Daim, and A. G. Atanasov, "Antioxidants: Scientific Literature Landscape Analysis (Review article)", Oxidative Medicine and Cellular Longevity, vol. 2019, pp. 1-11, 2019.
Yosef, M., M. M. Sayed, and H. K. M. Youssef, "Allocation and sizing of distribution transformers and feeders for optimal planning of MV/LV distribution networks using optimal integrated biogeography based optimization method ", EL-Sevier Journal of Electric Power Systems Research, vol. 128, issue 11/2015, pp. 100–112, 2015.
Yosri, A. M., M. A. Abd-Elmegeed, and A. E. Hassan, "Assessing groundwater storage changes in the Nubian aquifer using GRACE data", Arabian Journal of Geosciences, vol. 9(10), 2016.
Yosri, A., N. Mohamed, A. Atef, O. Atef, R. Attia, and M. Ali, "ANALYTICAL STUDY ON THE EFFECTS OF POLLUTANTS ON SILVER GELATIN PRINTS", International Journal of Conservation Science, vol. 11, issue 1, pp. 39-50, 2020.
Yosri, A. M., M. A. Abd-Elmegeed, and A. E. Hassan, "Assessing Groundwater Storage Changes in the Nubian Aquifer Using GRACE Data", Arabian Journal of Geosciences , vol. 9, issue 10, 2016.
Yosri, A. M., M. A. Abd-Elmegeed, and A. E. Hassan, "Assessing Groundwater Storage Changes in the Nubian Sandstone Aquifer System Using Gravity Recovery and Climate Experiment (GRACE) Data", International Water Resources Conference, vol. 9, issue 10, Maskat, Sultanate of Oman, 13 March , 2016.
Yosri, A., S. Dickson-Anderson, A. Siam, and W. El-Dakhakhni, "Analytical description of colloid behavior in single fractures under irreversible deposition", Journal of Colloid and Interface Science, vol. 589, pp. 597-604, 2021.