Export 107150 results:
Sort by: Author Title Type [ Year  (Asc)]
Germoush, M. O., M. M. A. Fouda, M. Kamel, and M. M. Abdel-Daim, "Spirulina platensis protects against microcystin-LR-induced toxicity in rats", Environmental Science and Pollution Research, vol. 29, issue 8, pp. 11320 - 11331, 2022. AbstractWebsite
Al-Qodami, B. A., H. H. Alalawy, I. M. Al-Akraa, S. Y. Sayed, N. K. Allam, and A. M. Mohammad, "Surface engineering of nanotubular ferric oxyhydroxide “goethite” on platinum anodes for durable formic acid fuel cells", International Journal of Hydrogen Energy, vol. 47, issue 1, pp. 264 - 275, 2022. AbstractWebsite
Shaheen, S. M., V. Antoniadis, M. Shahid, Y. Yang, H. Abdelrahman, T. Zhang, N. E. E. Hassan, I. Bibi, N. K. Niazi, S. A. Younis, et al., "Sustainable applications of rice feedstock in agro-environmental and construction sectors: A global perspective", Renewable and Sustainable Energy Reviews, vol. 153, pp. 111791, 2022. AbstractWebsite

Rice is second only to maize among the world's most important cereal crops, with a global harvested area of approximately 158 million hectares and an annual production of more than 700 million tonnes as paddy rice. At this scale, rice production generates vast amounts of waste in the form of straw, husk, and bran. Because of high cellulose, lignin, and silica contents, rice biowaste (RB) can be used to produce rice biochar (RBC) and rice compost (RC). Furthermore, RB can be used as sorbents, soil conditioners, bricks/concrete blocks, flat steel products, and biofuels, all of which make significant contributions to meeting United Nations Sustainable Development Goals (UNSDGs). Although previous reviews have explored individual applications of rice feedstocks, inadequate attention has been paid to multifunctional values and potential multi-utilities. Here, we offer a comprehensive review of RBC and RC with respect to: (1) preparation and characterization; (2) applications as soil conditioners and organic fertilizers and their effects on soil-carbon sequestration; (3) remediation of toxic element–contaminated soils and water; (4) removal of colors, dyes, endocrine-disrupting chemicals, personal-care products, and residual pesticides from water; and (5) applications in the construction industry. Specifically, we describe the opportunities for the sustainable use of RBC and RC in the management of contaminated soils and water as well as the construction industry. Overall, this review is expected to lengthen the list of possible multifunctional applications of RBC and RC.

Asal, Y. M., A. M. Mohammad, S. S. Abd El Rehim, and I. M. Al-Akraa, "Synergistic enhancement of formic acid electro-oxidation on PtxCuy co-electrodeposited binary catalysts", Journal of Saudi Chemical Society, vol. 26, issue 2, 2022. AbstractWebsite
Khan, M. A., A. K. Azad, M. Safdar, A. Nawaz, M. Akhlaq, P. Paul, M. D. Hossain, M. D. Rahman, R. S. Baty, A. F. El-kott, et al., "Synthesis and Characterization of Acrylamide/Acrylic Acid Co-Polymers and Glutaraldehyde Crosslinked pH-Sensitive Hydrogels", Gels, vol. 8, issue 1, 2022. AbstractWebsite
El-Din, H. S., A. Al-Fattah, and M. Abd Al-Wahab, The type of protein supplement or substitute and its location from brood affect honeybee colony performance, : Beni-Sweif University, Faculty of Agriculture, 2022. Abstract
Mahmoud, M. G., Y. Zedan, A. M. Samuel, V. Songmene, and F. H. SAMUEL, The use of rare earth metals in Al–Si–Cu casting alloys, , vol. 16, issue 2: Springer International Publishing, pp. 535 - 552, 2022. Abstract
mostafa zedan, A. F. Zedan, R. M. Amin, and X. Li, Visible-light active metal nanoparticles@carbon nitride for enhanced removal of water organic pollutants, , vol. 10, issue 3, pp. 107780, 2022. AbstractWebsite

Graphitic carbon nitride (gCN) modified with metal nanoparticles (MNPs) has gained great interest as an effective photocatalyst for the photocatalytic removal of organic pollutants from water. Herein, a series of x% Au@gCN and x% Ag@gCN nanohybrids were fabricated via a feasible in-situ reduction/deposition method using non-toxic reducing agents. The prepared MNPs@gCN materials were characterized using several standard characterization and analytical techniques. Their photocatalytic activity toward the degradation of different organic pollutants was studied. The modification of the bulk gCN with MNPs using varying ratios of Au and Ag NPs in the final nanohybrids could improve the visible-light harvesting properties and suppress the photogenerated charges recombination. The 2% Au@gCN and 10% Ag@gCN photocatalysts exhibited a photocatalytic degradation of 98% and 97% of methylene blue (MB) within 20 min of visible light irradiation. The 2% Au@gCN achieved the highest photocatalytic activity with complete degradation of methyl orange (MO) under visible light irradiation for 100 min. Whereas the 10% Ag@gCN showed the highest photodegradation for ciprofloxacin (CIP) upon light exposure. The present work paves a practicable, low-cost, and scalable green approach to fabricate plasmonic gCN-based photocatalysts for superior removal of organic water pollutants under visible light irradiation.

Massah, S. E., and E. A. Hassanein, "Digitalization and subjective wellbeing in Europe", Digital Policy, Regulation and Governance, vol. 24, issue 1: Emerald Publishing Limited, pp. 52 - 73, 2022/01/01. AbstractWebsite

Purpose This study aims to analyze the effect of digitalization on 28 European countries’ subjective wellbeing by using macro (aggregate level) indicators. Design/methodology/approach The research investigates the impact of digitalization (Digital Economy and Society Index [DESI]) on life satisfaction through its components. The study uses several models based on the two-stage least squares method. Findings The findings show that internet connectivity, use of the internet and integrated digital technology are positively related to life satisfaction. Furthermore, the results revealed that human capital and digital public services are negatively associated with it. The study also suggested that digital skills, e-health, and e-government services do not necessarily increase an individual’s life satisfaction level. The internet’s use appeared to be the most effective digitalization component in affecting life satisfaction in Europe. Research limitations/implications The study is based on the DESI index from 2014 to 2019. Although it does not influence the outcome, future research may consider additional indexes such as Digital Adoption Index and Digital Transformation Index and extend the study period. Practical implications The study helps the policymakers directing their attention to the importance of digitalization on life satisfaction. Originality/value This work extends the limited understanding of subjective wellbeing, digitalization and the digital economy and society index in terms of theoretical implications.

Massah, S. E., M. Biltagy, and D. Gamal, "Framing the role of higher education in sustainable development: a case study analysis", International Journal of Sustainability in Higher Education, vol. 23, issue 2: Emerald Publishing Limited, pp. 320 - 355, 2022/01/01. AbstractWebsite

Purpose Higher education institutions (HEIs) should play a fundamental role in achieving the international 2030 sustainable development (SD) agenda. Quality education is the fourth of the sustainable development goals (SDGs), and one of the targets related to this is to ensure that by 2030 all learners acquire the knowledge and skills needed to promote SD. Therefore, the SDGs provide a motive for HEIs to integrate SD concepts into their day-to-day practices. This study aims to introduce a framework for HEIs’ sustainable development assessment. Such a framework guides HEIs and educational leaders to support their countries’ commitments to achieving the SDGs. Design/methodology/approach This paper presents the results of a case study analysis of the role and successful techniques of HEIs in achieving SD in three countries, namely, Germany, Japan and Egypt. Primary data was collected by semi-structured interviews with three Cairo University officials, while secondary data was collected by reviewing the universities' official websites, reports, publications and related papers. This study introduces a novel framework for HEIs' SD analysis and assessment, which guides HEIs and educational leaders to support SD to fulfill their countries' commitments to achieving the SDGs. This framework is based on the following five categories: strategic direction and institutional working practices, supporting students, supporting university staff competencies, supporting society's stakeholders and networking and sustainable campus. Consideration is given to the potential role of HEIs to support SD in each of these areas. Findings Cairo University could learn from the novel and pioneer practices of the Leuphana University of Lüneburg, and the University of Tokyo to fill in the gaps it has in different roles. It can also put more effort into adopting the suggested higher education programs of Egypt's Vision 2030. Research limitations/implications This paper is limited to a case analysis comparing three countries, Germany, Japan and Egypt. Second, this study has not considered school education, which is equally essential in countries' SD. Practical implications HEIs can use the framework and the findings in this paper to evaluate their current roles in supporting SD, identify the gaps and take actions accordingly to address their weaknesses. Originality/value The paper compares three universities, one in each of the case study countries. It draws conclusions that identify ways in which the paper's framework and findings can guide SD practice in HEIs internationally, especially those in the developing world.

Massah, S. E., S. Bacheer, and E. Hassanein, "US consumers' confidence and responses to COVID-19 shock", Review of Economics and Political Science, vol. ahead-of-print, issue ahead-of-print: Emerald Publishing Limited, 2022/01/01. AbstractWebsite

Purpose This research's main objective is to investigate the relationship between consumption expenditure and consumer confidence in the USA and to study their effects on US economic revivalism during and after the coronavirus disease 2019 (COVID-19) shock. Design/methodology/approach The authors use Michigan's monthly Consumer Sentiment Index and its five components from January 1978 to April 2020. The study is unique in quantifying the potential variations in US consumer confidence due to COVID-19 under different scenarios, by providing a projection until December 2021. It also estimates the time needed for recovery and offers guidance to policymakers on ways to contain the negative impacts of COVID-19 on the economy by restoring consumer confidence. Findings All scenarios show a gradual recovery of consumer confidence and consumption expenditure. This study recommends expansionary policies to encourage consumption expenditure to generate additional demand and boost economic growth and job creation. Practical implications Though this study is limited to the US consumer confidence index, it offers significant implications for marketers, customers and policymakers of other developed economies. The authors recommend expansionary economic policies to boost consumer confidence, raise economic growth and result in job creation. Originality/value The study is unique in quantifying the potential variations in US consumer confidence due to COVID-19 under different scenarios; by providing a projection until December 2021. It also estimates the time needed for recovery and guidance for policymakers on ways to contain the COVID-19 shock negative impacts on the economy by restoring consumer confidence.

Katowah, D., H. Hassaneen, and T. Farghaly, Novel Spiro-pyrrolizidine-Oxindole and Spiropyrrolidine-Oxindoles: Green synthesis Under Classical, Ultrasonic, and Microwave Conditions and Molecular Docking Simulation for antitumor and type 2 diabetes, , vol. 15, pp. 103930, 2022/04/01. Abstract

Novel spiropyrrolizine / pyrrolidineoxindole moieties were synthesized chemo-, and regio-selectively in high yields from knoevenagel reaction of bis[arylmethylidene]piperidin-4-ones, isatin and L-proline or sarcosine under classical, ultrasonic, and microwave conditions. Seven derivatives of the synthesized dispiro-pyrrolizidine-oxindole and spiropyrrolidine were screened for their antitumor activity against two cell lines MCF-7 (breast cancer) and HEPG2 (liver cancer). The results of biological activity indicated that the tested derivatives showed potent activity against breast cancer cell MCF-7. Molecular docking simulation screening studies of the synthesized products with each of the receptors of (3hb5) for breast cancer and (4k9g) for liver cancer and their interaction with 1H5U of glycogen phosphorylase B, type 2 diabetes drug were examined. The docking study of dispiro-pyrrolizidine-oxindole and spiropyrrolidine showed promising results with several derivatives.

Shokry, A., R. El-Shiekh, G. Kamel, A. Bakr, and A. Ramadan, Bioactive Phenolics Fraction of Hedera helix L. (Common Ivy Leaf) Standardized Extract ameliorates LPS-induced Acute Lung Injury in The Mouse Model Through The Inhibition of Proinflammatory Cytokines and Oxidative Stress, , pp. e09477, 2022/05/01. Abstract

Hedera helix L. (family Araliaceae) is classified as a conventional plant used as a medicinal product in the cure and prevention of upper respiratory tract inflammation and infection due to its secretolytic and broncholytic effects. Our research was conducted to authenticate the anti-inflammatory effect of ivy leaves extract in the prevention of acute lung injury (ALI) caused by intranasal administration of lipopolysaccharides (LPS). In-vitro antimicrobial, anti-inflammatory, and anti-oxidant were evaluated, in addition to the in-vivo acute lung inflammation model induced by LPS in mice. The animals were divided into seven groups randomly (each group containing 10 mice): control negative (saline only), control positive (LPS group), standard (Dexamethasone 2 mg/kg), ethanolic ivy leaves extract (EIE, 100 mg/kg), ethanolic ivy leaves extract (EIE, 200 mg/kg), saponin rich fraction (SRF, 100 mg/kg) and phenolic rich fraction (PRF,100 mg/kg). Right lungs were homogenized to determine the levels of SOD, MDA, catalase, IL-10, TNF-α, NO, IL-1β, IL-6, PGE2, and MPO. Left lungs were excised for histopathology and histomorphometry. Immunohistochemistry of Cox-2 and TNF-α levels were measured. Additionally, Western blotting was used to determine the levels of phosphorylated MAPK. The data showed that the oral supplementation with EIE, 200 mg/kg significantly (P<0.05) decreased the pro-inflammatory mediators, and oxidative stress biomarkers induced by LPS. Interestingly, the phenolics showed promising activity, therefore they are responsible for the action. The ethanolic extract was also standardized through HPLC analysis for its content of rutin. In conclusion, the standardized ivy leaf extract could be advised for acute lung injury for its antimicrobial, anti-oxidant, and anti-inflammatory activities.

Mohamed, B. A., R. I. M. Fattah, B. Yousaf, and S. Periyasamy, "Effects of the COVID-19 pandemic on the environment, waste management, and energy sectors: a deeper look into the long-term impacts", Environmental science and pollution research international: Springer Berlin Heidelberg, pp. 1 - 20, 2022/05/02. AbstractWebsite

The COVID-19 pandemic not only has caused a global health crisis but also has significant environmental consequences. Although many studies are confirming the short-term improvements in air quality in several countries across the world, the long-term negative consequences outweigh all the claimed positive impacts. As a result, this review highlights the positive and the long-term negative environmental effects of the COVID-19 pandemic by evaluating the scientific literature. Remarkable reduction in the levels of CO (3 - 65%), NO(2) (17 - 83%), NO(x) (24 - 47%), PM(2.5) (22 - 78%), PM(10) (23 - 80%), and VOCs (25 - 57%) was observed during the lockdown across the world. However, according to this review, the pandemic put enormous strain on the present waste collection and treatment system, resulting in ineffective waste management practices, damaging the environment. The extensive usage of face masks increased the release of microplastics/nanoplastics (183 to 1247 particles piece(-1)) and organic pollutants in land and water bodies. Furthermore, the significant usages of anti-bacterial hand sanitizers, disinfectants, and pharmaceuticals have increased the accumulation of various toxic emerging contaminants (e.g., triclocarban, triclosan, bisphenol-A, hydroxychloroquine) in the treated sludge/biosolids and discharged wastewater effluent, posing great threats to the ecosystems. This review also suggests strategies to create long-term environmental advantages. Thermochemical conversions of solid wastes including medical wastes and for treated wastewater sludge/biosolids offer several advantages through recovering the resources and energy and stabilizing/destructing the toxins/contaminants and microplastics in the precursors.

Gad, H., S. Attia, and H. A. Khalil, "Rereading Cairo through Neighbouring Patterns Between Formal and Informal Areas, Case Study: Ard Al-Lewaa and ElMohandeseen", Ecocity World Summit 2021, Rotterdam, Netherland, 21 Feb, 2022.
Eldokmak, Y., M. H. Ismail, and M. S. Hassan, "Physical Layer Security Analysis Over Composite Generalized Gamma-Lognormal Fading Channels", Proc. of 2022 Wireless Telecommunications Symposium (WTS), Pomona, CA, April 6 - 8, 2022.
Ghatas, Y., M. Fayek, and M. Hadhoud, "A hybrid deep learning approach for musical difficulty estimation of piano symbolic music", Alexandria Engineering Journal, vol. 61, no. 12: Elsevier {BV}, pp. 10183–10196, dec, 2022. AbstractWebsite
Gebran, A., A. Gaitanidis, D. Argandykov, L. R. Maurer, A. D. Gallastegi, M. Bokenkamp, O. Alser, D. Nepogodiev, A. Bhangu, H. M. A. Kaafarani, et al., "Mortality & Pulmonary Complications in Emergency General Surgery Patients with Mortality COVID-19: A Large International Multicenter Study", The journal of trauma and acute care surgery, February, 2022. AbstractWebsite

<h4>Objectives</h4>The outcomes of emergency general surgery (EGS) patients with concomitant COVID-19 infection remain unknown. With a multicenter study in 361 hospitals from 52 countries, we sought to study the mortality and pulmonary complications of COVID-19 patients undergoing EGS.<h4>Methods</h4>All patients aged ≥17 years and diagnosed preoperatively with COVID-19 between February and July 2020 were included. EGS was defined as the urgent/emergent performance of appendectomy, cholecystectomy, or laparotomy. The main outcomes were 30-day mortality and 30-day pulmonary complications (a composite of acute respiratory distress syndrome, unexpected mechanical ventilation, pneumonia). Planned subgroup analyses were performed based on presence of preoperative COVID-related respiratory findings (e.g. cough, dyspnea, need for oxygen therapy, chest radiology abnormality).<h4>Results</h4>A total of 1,045 patients were included, of which 40.1% were female and 50.0% were older than 50 years; 461 (44.1%), 145 (13.9%), and 439 (42.0%) underwent appendectomy, cholecystectomy, and laparotomy, respectively. The overall mortality rate was 15.1% (158/1,045) and the overall pulmonary complication rate was 32.9% (344/1,045); in the subgroup of laparotomy patients, the rates were 30.6% (134/438) and 59.2% (260/439), respectively. Subgroup analyses found mortality and pulmonary complication risk to be especially increased in patients with preoperative respiratory findings.<h4>Conclusion</h4>COVID-19 patients undergoing EGS have significantly high rates of mortality and pulmonary complications, but the risk is most pronounced in those with preoperative respiratory findings.<h4>Level of evidence</h4>Level III.

{Elsanhoury}, W.  H., M. Y. {Amin}, A.  A. {Haroon}, and Z. {Awad}, "{A comprehensive photometric and kinematical characteristic of the newly discovered QCs clusters with Gaia EDR3}", \J Astrophys Astron, vol. 43, no. 1, pp. 26-32, jan, 2022. Abstract
Rahama, A. Y., M. S. Hassan, and M. H. Ismail, "A PDE-based Stochastic Model for the Amount of Data Transmitted over Multi-State Wireless Channels", Proc. of the 2022 9th International Conference on Electrical and Electronics Engineering (ICEEE 2022), Alanya, Turkey, March 29 – 31, 2022.
Alabrak, M., M. Megahed, A. Mohammed, H. Elfandy, N. Tahoun, and Hoda Ismail, "Deep Learning Approach for Classifying Thyroid Nodules", Modern Pathology 2022, Los Angeles, California, Springer-Nature, March19-24, 2022.
Abdelkader, N. A., O. M. Younes, S. F. A. E. Mageed, and E. G. El Bana, "Higher Prevalence of Trunk Rotation of the Egyptian Students in Urban Areas than Countryside One", Physiotherapy Quarterly, vol. 31, issue 1, 2023. physitherapy_quarterly2023.pdf
Abozeid, D., G. Fawzy, M. Issa, N. Abdeltawab, and F. Soliman, "Medicinal plants and their constituents in the treatment of Acne vulgaris", Biointerface Research in Applied Chemistry, vol. 13, issue 2, pp. 189, 2023.
Tuvdendorj, B., H. Zeng, B. Wu, A. Elnashar, M. Zhang, F. Tian, M. Nabil, L. Nanzad, A. Bulkhbai, and N. Natsagdorj, "Performance and the Optimal Integration of Sentinel-1/2 Time-Series Features for Crop Classification in Northern Mongolia", Remote Sensing, vol. 14, issue 8, pp. 1830, 2023. AbstractWebsite

Accurate and early crop-type maps are essential for agricultural policy development and food production assessment at regional and national levels. This study aims to produce a crop-type map with acceptable accuracy and spatial resolution in northern Mongolia by optimizing the combination of Sentinel-1 (S1) and Sentinel-2 (S2) images with the Google Earth Engine (GEE) environment. A total of three satellite data combination scenarios are set, including S1 alone, S2 alone, and the combination of S1 and S2. In order to avoid the impact of data gaps caused by clouds on crop classification, this study reconstructed the time series of S1 and S2 with a 10-day interval using the median composite method, linear moving interpolation, and Savitzky–Golay (SG) filter. Our results indicated that crop-type classification accuracy increased with the increase in data length to all three data combination scenarios. S2 alone has higher accuracy than S1 alone and the combination of S1 and S2. The crop-type map with the highest accuracy was generated using S2 data from 150 days of the year (DOY) (11 May) to 260 DOY (18 September). The OA and kappa were 0.93 and 0.78, respectively, and the F1-score for spring wheat and rapeseed were 0.96 and 0.80, respectively. The classification accuracy of the crop increased rapidly from 210 DOY (end of July) to 260 DOY (August to mid-September), and then it remained stable after 260 DOY. Based on our analysis, we filled the gap of the crop-type map with 10 m spatial resolution in northern Mongolia, revealing the best satellite combination and the best period for crop-type classification, which can benefit the achievement of sustainable development goals 2 (SDGs2).

Zohdy, N. M., S. A. - E. - S. M. M. E. M., and H. M. Hamama, "Efficacy of the Steinernematid and Heterorhabditid Nematodes for Controlling the Mosquito, Culex quinquefasciatus Say (Diptera: Culicidae).", J. Mosquito Res., (India), vol. 3, no. 5, pp. 33–44, 2099. Abstract