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2023
A, O., N. A. Magdy B, Gad M, A. A. Tawfik S, Ahmed M, E. B. M, K. MA, and A. K. S. Ahmed S, "Extra-testicular Intra- scrotal Median Raphe Epidermoid Cyst Mimicking Polyorchidism in a Child.", Pediatric Sciences Journal, vol. 3, issue 2, pp. 119-125, 2023. cupsj_volume_3_issue_2_pages_119-125.pdf
Abdel-Nasser, A., A. S. Hathout, A. N. Badr, O. S. Barakat, and H. M. Fathy, "Extraction and characterization of bioactive secondary metabolites from lactic acid bacteria and evaluating their antifungal and antiaflatoxigenic activity", Biotechnology Reports, vol. 38: Elsevier, pp. e00799, 2023. Abstract
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ali, R. A., M. Fayek, M. Noureldin, and N. M. El-Essawy, "Eyebrow Restoration in Deep Facial Burn: Follicular Unit Extraction Hair Transplantation after Nanofat Graft", Plast Reconstr Surg Glob Open ., vol. 11, issue 10, 2023. eyebrow_restoration_in_deep_facial_burn_.23_3.pdf
ali, R. A., M. Fayek, M. Noureldin, and N. M. El-Essawy, "Eyebrow Restoration in Deep Facial Burn: Follicular Unit Extraction Hair Transplantation after Nanofat Graft", Plast Reconstr Surg Glob Open ., vol. 11, issue 10, 2023. eyebrow_restoration_in_deep_facial_burn_.23_3.pdf
Mohie El‐Din, M. M., A. Sharawy, and M. H. Abu‐Moussa, "E‐Bayesian estimation for the parameters and hazard function of Gompertz distribution based on progressively type‐II right censoring with application", Quality and Reliability Engineering International, vol. 39, issue 4, pp. 1299-1317, 2023. Abstract
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Gamal, S., H. Atef, D. Youssef, T. Ismail, and J. El-Azab, "Early Breast Cancer Screening from Thermography via Deep Pre-Trained Edge Detection with Extreme Gradient Boosting", 2023 Intelligent Methods, Systems, and Applications (IMSA), 430-433, 2023.
Mohamed, T. G., A. A. El-Midany, M. a Ismail, M. G. ElSamrah, E. A. Lotfy, and M. A. Hassan, "Effect of Incorporating Black Sands (Magnetite and Ilmenite) into Concrete Mixtures on their Mechanical Properties", 5th Novel Intelligent and Leading Emerging Sciences Conference, 2023.
Youssef, D., S. Hassb-Elnaby, and S. R. Al-Sayed, "Effect of Process Parameters on Ni-Based WC Powder-fed Direct Laser Deposition", Advanced Solid State Lasers, 2023.
Boghdady, T. A., A. Khalifa, and M. M. Sayed, "Enhancing the performance of ِA nuclear reactor using Artificial Hummingbird Algorithm based on fractional order PID Controller", 24th International Middle East Power Systems Conference (MEPCON 2023), 19-21 December, 2023.
Gamal, S., Atef, Youssef, S. A., Youssef, S. A., and J. El-Azab, "Early Breast Cancer Screening from Thermography via Deep Pre-Trained Edge Detection with Extreme Gradient Boosting", 1st International Conference of Intelligent Methods, Systems and Applications, Cairo University, National Institute of Laser Enhanced Sciences, Department of EAL, Giza, Egypt b Nile University, Wireless Intelligent Networks Center (WINC), Giza, Egypt 193th percentile Citation in Scopus 3.93 FWCI FWCI View all metrics Full text op, 2023.
Marzouk, H. M., N. S. Ayish, B. A. El-Zeany, and A. S. Fayed, Eco-friendly chromatographic platforms for simultaneous determination and impurity profiling of an antihypertensive ternary pharmaceutical mixture, , vol. 32, pp. 100978, 2023. AbstractWebsite

Development of new analytical methods that are capable of determining pharmaceutically active substances in the presence of their related impurities is vital in pharmaceutical industry. Herein, simple, reliable and ecofriendly chromatographic methods were established, optimized and validated for the concurrent estimation of amiloride hydrochloride (AML), hydrochlorothiazide (HCT) and timolol maleate (TIM) along with hydrochlorothiazide potential impurities, salamide (DSA) and chlorothiazide (CT). The first established method was based on high performance liquid chromatography (HPLC-DAD). Separation was achieved using XBridge C18 analytical column and a gradient elution system comprises solvent A [20.0 mM phosphate buffer (pH = 3)] and solvent B [acetonitrile]. UV detection was accomplished at 220.0 nm for AML, HCT and HCT related impurities and at 295.0 nm for TIM. The second method was a LC-MS/MS method for the profiling and quantification of HCT impurities (DSA and CT). Separation was executed on Agilent Poroshell 120 EC-C18 column using mobile phase consisted of methanol and 0.1% formic acid in a ratio of 97:3 (v/v) pumped at flow rate of 0.7 mL/min with a run time of 3.0 min. Impurities were quantified via the utilization of multiple reaction monitoring mode (MRM) and triple quadrupole mass detection with electrospray ionization. The method demonstrated excellent sensitivity and linearity with limit of detection (LOD) of 1.0 ng/mL and 0.1 ng/mL for DSA and CT, respectively. Validation of the suggested methods was achieved in compliance with the ICH guidelines and were successively utilized for the determination of the aformentioned compounds in Moducren® tablets. Additionally, the advantage of the developed HPLC-DAD method was extrapolated for in-vitro drug release monitoring. Greenness of the proposed methods was assessed using different well established assessment tools.

Marzouk, H. M., N. S. Ayish, B. A. El-Zeany, and A. S. Fayed, An eco-friendly separation-based framework for quantitative determination and purity testing of an antihypertensive ternary pharmaceutical formulation, , vol. 17, issue 1, pp. 14, 2023. AbstractWebsite

Designing new, verified methodologies with a focus on sustainability, analytical efficiency, simplicity, and the environment has become a major priority for pharmaceutical quality control units. In this way, sustainable and selective separation-based methodologies were designed and validated for the concurrent estimation of amiloride hydrochloride (AML), hydrochlorothiazide (HCT) and timolol maleate (TIM) in their fixed dose formulation (Moducren® Tablets) along with hydrochlorothiazide potential impurities, salamide (DSA) and chlorothiazide (CT). The first method is a high performance thin layer chromatographic method (HPTLC-densitometry). The first developed method employed silica gel HPTLC F254 plates as stationary phase using a chromatographic developing system composed of ethyl acetate–ethanol–water–ammonia (8.5:1:0.5:0.3, by volume). The separated drug bands were densito-metrically measured at 220.0 nm for AML, HCT, DSA and CT and at 295.0 nm for TIM. The linearity was assessed over a wide concentration range, 0.5–10 µg/band, 1.0–16.0 µg/band and 1.0–14 µg/band for AML, HCT and TIM, in order and 0.05–1.0 µg/band for each of DSA and CT. The second method is capillary zone electrophoresis (CZE). The electrophoretic separation was achieved using background electrolyte (BGE), borate buffer 40.0 mM with pH 9.0 ± 0.2, at applied voltage of + 15 kV with on-column diode array detection at 200.0 nm. The method linearity was reached over the concentration range of 20.0–160.0 µg/mL, 10.0–200.0 µg/mL, 10.0–120.0 µg/mL for AML, HCT and TIM, respectively and 10.0–100.0 µg/mL for DSA. The suggested methods were optimized to achieve best performance and validated agreeing with the ICH guidelines. Assessment of methods’ sustainability and greenness was performed using different greenness assessment tools.

Hanafy, M., A. ’ Emara, D. Ayman, and A. Gouda, Effect of COVID-19 on the prevalence and severity of TMD symptoms in Cairo population., , vol. 69, issue 1: The Egyptian Dental Association (EDA), pp. 105 - 110, 2023. Abstract
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El-Rashidy, A. A., O. Shaalan, R. M. Abdelraouf, and N. A. Habib, Effect of immersion and thermocycling in different beverages on the surface roughness of single- and multi-shade resin composites, , vol. 23, issue 1, pp. 367, 2023. AbstractWebsite

Resin composite restorations are highly esthetic restorations, which should have and maintain high surface polish. However, esthetic restorations are subjected to different beverages at variable temperatures, which may affect their surface roughness. This study aimed to evaluate the surface roughness of single-shade (Omnichroma) and multi-shade (Filtek Z350XT) composite materials, following aging by immersion and thermocycling in different beverages, simulating one year of clinical service.

Abdelaziem, A., A. M. Mohamed, Y. M. Yousry, R. Borayek, A. S. Razeen, N. Zhang, S. Chen, L. Zhang, K. Lin, and Z. Liu, "Effect of poling on the dielectric properties of synthesized β-poly (vinylidene fluoride) foam", Journal of Applied PhysicsJournal of Applied Physics, vol. 133, issue 12: American Institute of Physics, pp. 124101, 2023. AbstractWebsite
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Elhassan, A., M. A. El-Harith, and M. A. Hamid, Effect of target thickness and laser irradiance on the back-reflection-enhanced laser-induced breakdown spectroscopy signal in glass, , vol. 13, issue 1, pp. 7218, 2023. AbstractWebsite

In the work that is being presented here, the effect of sample thickness and laser irradiance on the reduction of the signal-to-background ratio SBG and the plasma parameters, specifically electron temperature and electron density, is being investigated using back-reflection-enhanced laser-induced breakdown spectroscopy (BRELIBS). Copper and silver discs that had been highly polished were attached to the back surface of the glass target, and the Nd-YAG laser beam that was focused on the front surface of the target was tuned to its fundamental wavelength. The thicknesses of the transparent glass samples that were analysed were 1 mm, 3 mm, and 6 mm. One is able to achieve a range of different laser irradiance levels by adjusting the working distance that exists between the target sample and the focusing lens. The end result of this is that the signal-to-background ratio in the BRELIBS spectra of thicker glass samples is significantly lower as compared to the ratio in the spectra of thinner glass samples. In addition, a significant influence of modifying the laser irradiance (by increasing the working distance on the SBG ratio) is seen at various glass thicknesses for both BRELIBS and LIBS, with BRELIBS having a better SBG. Nevertheless, the laser-induced plasma parameter known as the electron temperature has not been significantly impacted by the decrease in the glass thickness.

Kamal, M. A., M. A. Khalaf, Z. A. M. Ahmed, M. Fathy, H. M. F. E. Miniawy, A. M. Mahmoud, A. Osman, and M. A. Z. Ewiss, "Effect of Water Organic Load and Total Ammonia Nitrogen on Broilers’ Humoral Immune Response Against Newcastle Disease Virus Vaccination in Egypt", International Journal of Veterinary Science, vol. 12, issue 1: Unique Scientific Publishers, pp. 107 - 113, 2023. Abstract

Low-quality drinking water (DW) has a negative impact on poultry immunity raising the risk of emerging infections. The current trial used experimentally contaminated broilers’ DW to study its effect on humoral immunity compared to 2 control groups. A total of 450 unsexed 1-day-old Cobb chickens were randomly allocated into 6 groups (75 birds in 5 replicates per group). DW of (T1) had 24 ppm chemical oxygen demand (COD), (T2) 12 ppm COD, (T3) 15 ppm total ammonia nitrogen (TAN), (T4) 5 ppm TAN, (T5) normal tap water (TW), (T6) TW with immunostimulant (IMU FORT®) a day before and after vaccination. Birds were subjected to the NDV DW vaccination program, serum was collected weekly, antibody (Ab) titers were measured along 6 weeks, lymphoid organs somatic indices (OSI) were evaluated after carcass evisceration at the end of the trial (42nd day), and Postmortem lesions were examined. Groups showed differences in Ab titers however, the 3rd and 6th weeks showed significant differences (p≤0.05), at the 3rd week T3 titers were significantly higher than T1, T2 but lower than T4, T6, and at the 6th week T6 titers were significantly higher than T1, T3, T4 but T5 was significantly lower than T3. The lowest OSI was in T3 which records 0.475, 0.133, 0.101 for thymus, bursa, and spleen, respectively while T6 was the highest. Broilers’ DW which has a high organic load (COD) and TAN, significantly decreases Ab titers and OSI. Both good quality DW and immunostimulant supplementation have a positive effect on NDV vaccines’ immune response.

Soliman, M. M., A. A. Al-Khalaf, and M. S. A. El-Hawagry, "Effects of Climatic Change on Potential Distribution of Spogostylum ocyale (Diptera: Bombyliidae) in the Middle East Using Maxent Modelling", Insects, vol. 14, issue 2, 2023. Abstract

Spogostylum ocyale (Wiedemann 1828) is a large robust species of bee fly (family Bombyliidae), known to be a larval ectoparasitoid as well as an important flower pollinator as an adult. This species has become extremely rare or has disappeared from many of its historic habitats due to substantial changes in floral and faunal compositions in recent years. Climate change and urbanisation, together with other anthropogenic activities, may be to blame for these changes. Distribution modelling based on environmental variables together with known occurrences is a powerful tool in analytical biology, with applications in ecology, evolution, conservation management, epidemiology and other fields. Based on climatological and topographic data, the current and future distributions of the parasitoid in the Middle East region was predicted using the maximum entropy model (Maxent). The model performance was satisfactory (AUC mean = 0.834; TSS mean = 0.606) and revealed a good potential distribution for S. ocyale featured by the selected factors. A set of seven predictors was chosen from 19 bioclimatic variables and one topographic variable. The results show that the distribution of S. ocyale is mainly affected by the maximum temperature of the warmest period (Bio5) and temperature annual range (Bio7). According to the habitat suitability map, coastal regions with warm summers and cold winters had high to medium suitability. However, future scenarios predict a progressive decline in the extent of suitable habitats with global climate warming. These findings lead to robust conservation management measures in current or future conservation planning.

Ayman, K., Y. M. Asal, A. M. Mohammad, and I. M. Al-Akraa, "Efficient Electro-Oxidation of 2-Propanol at Platinum- and Gold-Modified Palladium Nanocatalysts", Journal of Chemistry, vol. 2023: Hindawi Limited, 2023. AbstractWebsite

This study aims at investigating the catalytic performance of Pd, Pd/Pt, and Pd/Au nanocatalysts toward the 2-propanol electro-oxidation reaction (2POR) in an alkaline medium. The catalyst components (Pd, Pt, and Au) were sequentially electrodeposited onto the glassy carbon (GC) electrode surface and further characterized using electrochemical (cyclic voltammetry (CV)) and materials (field-emission scanning electron microscopy (FE-SEM) coupled with energy-dispersive X-ray (EDX)) characterization methods. The Pd/Au/GC catalyst showed the highest catalytic activity in terms of the highest oxidation current (0.386 mA) and the highest stability in terms of the highest obtained current after 1800 s of continuous electrolysis. This behaviour was attributed to the enhancement in the charge transfer kinetics where the Pd/Au/GC catalysts acquired the lowest charge transfer resistance (Rct, 1.85 kΩ) during the 2POR. © 2023 Kareem Ayman et al.

Mohammad, H. Y., F. E. - Z. Tawfeek, E. Eltanahy, T. A. Mansour, and Z. Khalil, Enhancement of Growth, Lipid, and Carbohydrate Production of the Egyptian isolate Dunaliella salina SA20 Using Mozzarella Cheese Whey as a Growth Supplement, , vol. 63, issue 1: National Information and Documentation Center (NIDOC), Academy of Scientific …, pp. 101 - 111, 2023. Abstract
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Ratep, A., A. AbdelAziem, M. Y. Hanfi, K. A. Mahmoud, and I. Kashif, Enhancing gamma-ray shielding with bismuth oxide-infused boron oxides, , vol. 56, issue 2, pp. 143, 2023. AbstractWebsite

The objective of this study is to explore how the replacement of barium oxide (BaO) by bismuth oxide (Bi2O3) affects the optical, structural and gamma rays shield ability of borate glasses. To accomplish this, a series of borate-based glasses was fabricated according the chemical formula 60B2O3 + (40-x) BaO + xBi2O3, where 0 < x < 10 wt.%. X-ray diffraction confirmed that an amorphous phase was present at all fabricated glasses. Thermal analysis indicated that Bi2O3 could serve as a glass modifier for all values of x greater than zero. Furthermore, the optical absorption profile showed that the samples had a greater absorption rate as x increased within the 1–4 eV photon energy range, with only minor fluctuations beyond 4 eV. Monte Carlo simulation demonstrated that increasing the concentration of Bi2O3 led to an increased radiation-absorbing capacity, where the linear attenuation coefficient of the fabricated glasses enhanced by 26% from 74.48 to 94.17 cm−1 at gamma ray energy of 0.015 MeV. Simultaneously, the half value thickness for the fabricated glasses reduced from 3.99 to 3.73 cm, raising the Bi2O3 concentration between 0 and 10 wt.%, respectively. These results indicate that adding Bi2O3 to boron oxides can significantly improve shielding the ability of the material to against gamma rays, alter the glass samples, and potentially be cost-effective. This study could lead to faster synthesis processes for glass modifiers, with important implications for designing and producing materials to shield against harmful gamma rays in industrial and medical applications.

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