1,803 results on '"El-Sayed"'
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2. Bioprospecting Endophytic Fungi of Forest Plants for Bioactive Metabolites with Antibacterial, Antifungal, and Antioxidant Potentials.
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El-Sayed, El-Sayed R., Baskaran, Abirami, Pomarańska, Oliwia, Mykhailova, Daria, Dunal, Anna, Dudek, Anita, Satam, Sahil, Strzała, Tomasz, Łyczko, Jacek, Olejniczak, Teresa, and Boratyński, Filip
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TRICHODERMA harzianum , *PENICILLIUM chrysogenum , *PLANT-fungus relationships , *BLACK locust , *HOST plants , *ENDOPHYTIC fungi - Abstract
The growing emergence of multi-drug resistant microbial strains has kept the scientific world searching for novel bioactive compounds with specific chemical characteristics. Accordingly, researchers have started exploring the understudied metabolites from endophytes as a new source of bioactive compounds. In this context, the current study was designed to evaluate the bioactive properties of endophytic fungi from the Mokrzański forest in Wrocław, Poland that have not yet been fully researched. Forty-three endophytic fungi were isolated from twelve distinct plants. Following their cultivation, fungal extracts were separately prepared from biomass and cell-free filtrates, and their antibacterial, antifungal (against human and plant pathogens), and antioxidant properties were examined. Five promising fungi after screening were identified to possess all of these activities. These strains and their respective plant hosts were Trichoderma harzianum BUK-T (Fagus sylvatica), Aspergillus ochraceus ROB-L1 (Robinia pseudoacacia), Chaetomium cochliodes KLON-L1, Fusarium tricinctum KLON-L2 (Acer platanoides), and Penicillium chrysogenum SOS-B2 (Pinus sylvestris). Moreover, gamma irradiation at several doses (Gy) was separately applied to the fungal cultures to study their effects on the recorded activities. Finally, compounds after preparative thin-layer chromatography fractionation of the five fungal strains were identified by GC-MS. These findings suggest that the isolated endophytic fungi could serve as novel sources of bioactive metabolites with antibacterial, antifungal, and antioxidant properties, potentially paving the way for future research and the development of new bioactive compounds. [ABSTRACT FROM AUTHOR]
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- 2024
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3. Biological Potential and Essential Oil Profile of Two Wild Apiaceae Species from Algeria (Daucus carota L. and Foeniculum vulgare Mill.): Larvicidal and Antibacterial Effects.
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Khemili, Aicha, Bensizerara, Djamel, Chenchouni, Haroun, Chaibi, Rachid, Aissani, Nadjwa, Tegegne, Desiye Tesfaye, El-Sayed, El-Sayed R., and Szumny, Antoni
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FENNEL ,TREATMENT effectiveness ,GRAM-negative bacteria ,CULEX pipiens ,BIOLOGICAL insecticides - Abstract
Infectious diseases, including vector-borne and antibiotic-resistant infections, present significant global health challenges, necessitating the exploration of natural alternatives for disease control. In this study, we investigated the essential oil (EO) profile as well as larvicidal and antibacterial properties of two wild Apiaceae species used in Algeria: Daucus carota L. (DCEO) and Foeniculum vulgare Mill. (FVEO). EO was extracted from the aerial parts by steam distillation and analyzed using Gas Chromatography Mass Spectrometry (GC/MS). Major constituents identified in DCEO were geranyl acetate (50.07%) and elemicin (10.77%), while FVEO contained estragole (24.93%), fenchone (20.20%), and α-phellandrene (17.96%). Both EOs were highly effective towards Culex pipiens larvae, with low LC
50 values of 30.6 ± 1.06 ppm for DCEO and 34.7 ± 1.06 ppm for FVEO, indicating their potential as bioinsecticides due to their bioactivity and bioavailability. Additionally, the two Eos demonstrated moderate antibacterial efficacy against gram-positive bacteria, Staphylococcus aureus ATCC 25923 and Staphylococcus aureus MRSA ATCC 43300, respectively, with DCEO showing MIC values of 10 and 20 mg/mL, respectively, and FVEO exhibiting MIC values > 20 mg/mL. However, both EOs showed limited effectiveness against gram-negative bacteria, Escherichia coli ATCC 25922 and Klebsiella pneumonia ATCC 700603. These results highlight the potential applications of DCEO and FVEO as natural bioinsecticides and antibacterial agents, offering promising avenues for further research and development in pest control and food preservation. [ABSTRACT FROM AUTHOR]- Published
- 2024
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4. The Impact of the Nonlinear Integral Positive Position Feedback (NIPPF) Controller on the Forced and Self-Excited Nonlinear Beam Flutter Phenomenon.
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Alluhydan, Khalid, Amer, Yasser A., EL-Sayed, Ashraf Taha, and EL-Sayed, Marwa Abdelaziz
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NONLINEAR dynamical systems ,NONLINEAR systems ,ANALYTICAL solutions ,RESONANCE ,COMPUTER simulation - Abstract
This article presents a novel approach to impact regulation of nonlinear vibrational responses in a beam flutter system subjected to harmonic excitation. This study introduces the use of a Nonlinear Integral Positive Position Feedback (NIPPF) controller for this purpose. This technique models the system as a three-degree-of-freedom nonlinear system representing the beam flutter, coupled with a first-order and a second-order filter representing the NIPPF controller. By applying perturbation analysis to the linearized system model, the authors obtain analytical solutions for the autonomous system with the controller. This study aims to reduce vibration amplitudes in a nonlinear dynamic system, specifically when 1:1 internal resonance occurs. The Routh–Hurwitz criterion is utilized to evaluate the system's stability. Furthermore, the frequency–response curves (FRCs) exhibit symmetry across a range of parameter values. The findings highlight that the effectiveness of vibration suppression is directly related to the product of the NIPPF control signal after comparing with different controllers. Numerical simulations, conducted using the fourth-order Runge–Kutta method, validate the analytical solutions and demonstrate the system's amplitude response. The strong correlation between the analytical and numerical results highlights the accuracy and dependability of the proposed method. [ABSTRACT FROM AUTHOR]
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- 2024
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5. Controlling the Generator in a Series of Hybrid Electric Vehicles Using a Positive Position Feedback Controller.
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Alluhydan, Khalid, Amer, Yasser A., EL-Sayed, Ashraf Taha, and EL-Sayed, Marwa A.
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ELECTRIC generators ,DEGREES of freedom ,ELECTRIC vehicles ,SYSTEM dynamics ,NUMERICAL analysis - Abstract
This study investigates the effectiveness of positive position feedback (PPF) in reducing vibration amplitudes in an electric vehicle generator, specifically at super harmonic resonance (SHR) with 1:1 Internal Resonance (IR). Here is a breakdown. Simplified Model: The study uses a simplified nonlinear dynamic model (one degree of freedom, up to fifth-order nonlinear components) with external force, analyzed using the Multiple Time Scales Method (MTSM) with a first-order approximation. Focus on Resonance: The primary focus is on understanding the system's behavior at SHR with 1:1 IR and how PPF can mitigate vibrations in this specific scenario. Frequency Response and Controller Influence: Frequency response functions are used to analyze the system's stability with PPF, examining how different controller parameters affect the main system's dynamics. Validation: Numerical solutions, obtained using the fourth-order Runge–Kutta method ('RK-4'), are used to demonstrate and evaluate the system's amplitude with and without PPF. The analytical and numerical results show strong agreement, validating the model's accuracy. In essence, the research explores using PPF as a vibration control strategy in a specific resonance condition within an electric vehicle generator, using a combination of analytical and numerical methods for analysis and validation. [ABSTRACT FROM AUTHOR]
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- 2024
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6. The Role of the Gut Microbiome in Inflammatory Bowel Disease: The Middle East Perspective.
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El-Sayed, Ahmed, Kapila, Diya, Taha, Rama Sami Issa, El-Sayed, Sherif, Mahen, Mohd Rafiw Ahmed, Taha, Roa'a, and Alrubaiy, Laith
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INFLAMMATORY bowel diseases , *GUT microbiome , *CROHN'S disease , *ULCERATIVE colitis - Abstract
The gut microbiome is of paramount importance in preserving internal balance in the gastrointestinal tract; therefore, disruptions in its regulation have been linked to the development of inflammatory bowel disease (IBD). This article explores the intricate details of the gastrointestinal microbiome as it pertains to inflammatory bowel disease (IBD), with an emphasis on the Middle East. The study reviews the typical gut microbiome, modifications in inflammatory bowel disease (IBD), determinants impacting the gut microbiome of the Middle East, and prospective therapeutic interventions. [ABSTRACT FROM AUTHOR]
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- 2024
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7. Data-Driven Approaches for State-of-Charge Estimation in Battery Electric Vehicles Using Machine and Deep Learning Techniques.
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El-Sayed, Ehab Issa, ElSayed, Salah K., and Alsharef, Mohammad
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One of the most important functions of the battery management system (BMS) in battery electric vehicle (BEV) applications is to estimate the state of charge (SOC). In this study, several machine and deep learning techniques, such as linear regression, support vector regressors (SVRs), k-nearest neighbor, random forest, extra trees regressor, extreme gradient boosting, random forest combined with gradient boosting, artificial neural networks (ANNs), convolutional neural networks, and long short-term memory (LSTM) networks, are investigated to develop a modeling framework for SOC estimation. The purpose of this study is to improve overall battery performance by examining how BEV operation affects battery deterioration. By using dynamic response simulation of lithium battery electric vehicles (BEVs) and lithium battery packs (LIBs), the proposed research provides realistic training data, enabling more accurate prediction of SOC using data-driven methods, which will have a crucial and effective impact on the safe operation of electric vehicles. The paper evaluates the performance of machine and deep learning algorithms using various metrics, including the R2 Score, median absolute error, mean square error, mean absolute error, and max error. All the simulation tests were performed using MATLAB 2023, Anaconda platform, and COMSOL Multiphysics. [ABSTRACT FROM AUTHOR]
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- 2024
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8. Anxiety and Depression Among Patients with Diabetes in Saudi Arabia and Egypt.
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Mahmoud, Madiha Rabie, Aljadani, Ahmed, Razzak Mahmood, Ammar A., Alshammari, Reem Falah, Shahien, Mona M., Ibrahim, Somia, Abdel Khalik, Ashraf, Alenazi, Fahaad S., Alreshidi, Fayez, Nasr, Fatma Mohammad, Alreshidi, Hend Faleh, Alshammari, Amal Daher, Abdallah, Marwa H., El-Horany, Hemat El-Sayed, Said, Kamaleldin B., and Saleh, Abdulrahman M.
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Background: Mental stress plagued type II diabetes (T2DM) patients. The psychological and emotional issues related to diabetes and its effects include depression, anxiety, poor diet, and hypoglycemia fear. Aim: Compare the impact of diabetes on depression and anxiety in Egyptian and Saudi diabetics. Methods: The diabetes, gastroenterology, and hepatology sections of University of Ha'il Clinic, KSA, and the Theodor Bilharz Research Institute, Egypt, conducted this retrospective study. Everyone gave informed consent before participating. Interviews with male and female outpatients and inpatients were conducted from June 2021 to December 2022. The self-administered validated Generalized Anxiety Disorder-7 (GAD-7) and the Patient Health Questionnaire-9 (PHQ-9) scale measured sociodemographic characteristics and symptoms of depression and anxiety. Results: In patients with diabetes, the prevalence of depression was higher in KSA [34.8%] than in Egypt [18%], while anxiety was higher in Egypt [40%] than in KSA [29.1%]. Most depressed patients were 31–55 years old (61.2%) from KSA and 97.8% (41–55 years old) from Egypt. Female anxiety was 70.7% in KSA and 51.0% in Egypt, with no significant difference. The duration of diabetes in depressed patients was 5–10 years ([46.9%, Saudis] vs. [57.8%, Egyptians]), while anxious patients (5–10 years [39.0%, Saudis] vs. >20 years [65.0%, Egyptians]) were mainly type-2. Most depressive patients had an HbA1c (59.2%) from 7–10% (Saudis) and 77.8% [>10% Egyptians] compared to anxiety patients (46.3%) and 48.0% [>10% Egyptians]. Depressed and anxious patients from both nations had higher glucose, triglycerides, and cholesterol levels. Saudis and Egyptians with obesity had higher rates of sadness (75.5% vs. 68.9%) and anxiety (82.9% vs. 69.0%). Treatment adherence and serum glucose monitoring were not significantly different from depression in diabetes individuals in both ethnicities. Conclusions: Anxiety was more common among Egyptian patients because of overcrowding, working whole days to fulfill life requirements, and the unavailability of health insurance to all citizens. Meanwhile, in KSA, obesity, unhealthy food, and less exercise reflect the high percentage of depression among patients with diabetes. The detection of depression and anxiety in the context of DM should be critical for the physical health and quality of life of Saudi and Egyptian diabetics. Further investigation is warranted to encompass anxiety and depression within the scope of future research. [ABSTRACT FROM AUTHOR]
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- 2024
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9. Stability and Control of Car Dynamics with a Quarter Model via a Novel Simple Harmonic Hump under External Force.
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Alluhydan, Khalid, Amer, Yasser A., EL-Sayed, Ashraf Taha, and Agwa, Mai M.
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NONLINEAR dynamical systems ,LINEAR velocity ,DYNAMICAL systems ,NONLINEAR systems ,DIFFERENTIAL equations - Abstract
Effects of the road, such as speed bumps, can significantly affect a car's stability. This study focuses on how a quarter-car model is affected by a basic harmonic speed hump and how Cubic Negative Velocity Control (CNVC) is used to control the amplitude of disturbances. This study differs from earlier research in considering various control and force kinds that impact the system. The external forces in this context are a component of a non-linear dynamic system. Two-degree-of-freedom (2DOF) differential coupled equations describe the system's equation. Numerous numerical experiments have been conducted, including proportional derivative (PD), negative derivative feedback (NDF), positive position feedback (PPF), linear negative velocity control (LNVC), and CNVC; the results show that when the hump is represented as a simple harmonic hump, CNVC has the best effect and can regulate vibrations more precisely than the other approaches on this system. Subsequently, the vibration value of the system was numerically analyzed both before and after the control was implemented. Using the frequency response equation and phase plane approaches in conjunction with the Runge–Kutta fourth order method (RK-4) in the context of resonance situation analysis, the stability of the numerical solution has been evaluated. [ABSTRACT FROM AUTHOR]
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- 2024
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10. A Comparative Study of Theoretical and Experimental Analysis on Balanced and Unbalanced Rotors Supported by Oil- and Water-Lubricated Journal Bearings.
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Ahmed, Omar, El-Sayed, Tamer A., and Sayed, Hussein
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FLUID-film bearings ,ROTATING machinery ,EQUATIONS of motion ,JOURNAL bearings ,MACHINE performance ,WATER use - Abstract
Studying rotor-bearing systems involving fluid film bearings is essential for designing and assessing the dynamic responses and performance of rotating machinery. They are involved in many applications such as pumps, turbines, and engines. Water-lubricated bearings are often used in many applications where the use of oil-based lubricants is not desirable, such as in environmentally sensitive areas such as water desalination. In this study, dynamic analysis is performed to identify the stability regions that prevent the application of water-lubricated journal bearings. This is achieved by solving the system equations of motion and then using an infinitesimal perturbation method to evaluate the second-order bearing coefficients of a journal bearing. In this paper, a steel shaft supported by two symmetrical journal bearings was used to investigate the system stability analysis. A test rig is designed and manufactured to examine the rotor's dynamic behavior and verify the theoretical outcomes of the FE model, utilizing the bearing coefficients based on second-order analysis. Furthermore, this study compares the two fluids, both theoretically and experimentally, investigating their impact on the rotor-bearing system at different rotational speeds. The theoretical findings indicate that the threshold speed for journal bearings is significantly higher when using water as the lubricant fluid film compared to using oil as the lubricant fluid. Additionally, because of the low viscosity of water, water-lubricated bearings are susceptible to significant wear and noise in operating conditions. Our experiments show that an oil lubricant provides less response than a water lubricant for unbalanced rotors within the tested speed range. [ABSTRACT FROM AUTHOR]
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- 2024
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11. Evaluation of Mucoadhesive Nano-Bilosomal In Situ Gels Containing Anti-Psychotic Clozapine for Treatment of Schizophrenia: In Vitro and In Vivo Studies.
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Abdallah, Marwa H., Shahien, Mona M., El-Horany, Hemat El-Sayed, Ahmed, Enas Haridy, El-Nahas, Hanan M., Abdulla, Nourhan A., and Ibrahim, Tarek M.
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NASAL mucosa ,CLOZAPINE ,ORAL medicine ,PEOPLE with schizophrenia ,GELATION - Abstract
Background/Objectives: Patients with schizophrenia have significant challenges in adhering to and complying with oral medicines, resulting in adverse consequences such as symptom worsening and psychotic relapse. Methods: This study aimed to develop clove oil-based bilosomes using definitive screening design (DSD) to maximize the anti-schizophrenic action of clozapine and promote its nose-to-brain delivery. The target was to optimize the physicochemical properties of bilosomes and incorporate them into mucoadhesive intranasal in situ gels, searching for augmented ex vivo and in vivo clozapine delivery. Results: The bilosomes' particle size was decreased by increasing the span, SDC, and clove oil amounts. In addition to using a high lipid amount, the aforementioned components also helped increase the entrapment efficiency values. Increased zeta potential was only observed by increasing surfactant amount and reducing clozapine concentration. After incorporation of optimized liquid clove oil-based bilosomes, which had a spherical nano-sized vesicular shape, into P 407-dependent gels, an HPMC (2% w/w)/P 407 (20% w/w)-containing formulation (G6) was selected as an optimized gel owing to its acceptable gelation time (13.28 s), gel strength (27.72 s), viscosity (12,766.67 cP), and mucoadhesive strength (4273.93 dyne/cm
2 ). The optimized G6 exhibited higher Jss (50.86 μg/cm2 ·h−1 ) through the nasal mucosa compared to the control gel (23.03 μg/cm2 ·h−1 ). Compared to the control gel, G6 displayed higher relative bioavailability (491.37%) than a commercial tablet (264.46%). Following ELISA analysis, dopamine and serotonin were significantly reduced, while BDNF was remarkably increased after administration of optimized G6 into schizophrenic rats. Conclusion: Our study indicates the potential of intranasal bilosomal gels in upgrading the anti-schizophrenic and neuroprotective activity of clozapine. [ABSTRACT FROM AUTHOR]- Published
- 2024
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12. Holothuria polii Extract as a Potential Anticoccidial Agent: Evidence of Its MUC2 Regulatory Impact in Murine Jejunum.
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El-Sayed, Youssef A., Abdel-Moneim, Ahmed E., Taha, Rania G., Khalil, Mona F., Abdel-Gaber, Rewaida, Thagfan, Felwa A., Al-Malki, Esam S., and Dkhil, Mohamed A.
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COCCIDIOSIS in animals ,PARASITIC diseases ,NATURAL products ,TRADITIONAL medicine ,THERAPEUTICS ,OOCYSTS - Abstract
Simple Summary: Natural products offer significant potential in the fight against parasitic diseases. Coccidiosis is a disease caused by the Eimeria genus of parasites that infect many animals all over the world. The development of resistance to anticoccidial medications has refocused attention on finding new compounds for alternative therapeutic approaches. The purpose of this study was to determine the efficacy of Holothuria polii extract (HpE) in treating eimeriosis in mice. The results indicated that animals treated with 200 mg/kg of HpE showed a significant decrease in oocyst count and higher expression of the MUC2 gene. In conclusion, HpE functions as an anticoccidial substance. Eimeria is a parasite that causes coccidiosis in a variety of animals, leading to nutritional imbalances, issues with food digestion and absorption, low weight, and intestinal inflammation of varying degrees in its hosts. Anticoccidial medication resistance has become a significant obstacle to disease control efforts, leading to a renewed focus on discovering novel chemicals for alternative therapeutic approaches. The purpose of this study was to determine the efficacy of Holothuria polii extract (HpE) in treating eimeriosis in mice. Five groups of mice were studied, with E. papillata sporulated oocysts (1 × 10
3 ) used to infect three groups experimentally. The first group was treated with 200 mg/kg of HpE, the second group with Amprolium (120 mg/kg), and the third group was left untreated as a control. The fourth and fifth groups were uninfected, with one of them treated with 200 mg/kg of HpE and the other used as a negative control. The results revealed that HpE has 10 phytochemical compounds according to GC-MS analysis. Treatment with HpE resulted in a substantial decrease in oocyst output in feces. Also, the parasitic stages showed morphometric alterations, with reductions in the measurements compared with the infected, untreated mice. Moreover, expression of the mucin gene (MUC2) was higher in treated mice compared to infected ones, with significant increases in goblet cell numbers, which provided additional evidence for the activity of HpE as an anticoccidial product. In conclusion, there are a wide variety of natural products and many have been employed in folk medicine for treating a range of parasitic diseases. [ABSTRACT FROM AUTHOR]- Published
- 2024
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13. The Effect of Dietary Plant-Derived Omega 3 Fatty Acids on the Reproductive Performance and Gastrointestinal Health of Female Rabbits.
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Quattrone, Alda, Belabbas, Rafik, Fehri, Nour Elhouda, Agradi, Stella, Mazzola, Silvia Michela, Barbato, Olimpia, Dal Bosco, Alessandro, Mattioli, Simona, Failla, Sebastiana, Abdel-Kafy, El-Sayed M., Jemmali, Bayrem, Salem, Imène Ben, Mandara, Maria Teresa, Giglia, Giuseppe, Colin, Michel, Guillevic, Mathieu, Muça, Gerald, Sulçe, Majlind, Castrica, Marta, and Bilgiç, Bengü
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ANIMAL welfare ,MILK yield ,ARTIFICIAL insemination ,FATTY acids ,ANIMAL weaning ,ANIMAL litters - Abstract
Simple Summary: Different sources of omega-3 (n-3) fatty acids can influence various aspects of female reproduction. This study evaluated the effects of dietary n-3 inclusion with extruded linseed and algae Padina pavonica extract on the reproductive performance and milk production of nulliparous female rabbits. In this study, the dietary inclusion of extruded linseed and alga Padina pavonica extract did not alter the feed intake, body weight, or gastrointestinal health of the rabbits, suggesting good tolerability and the absence of adverse effects. No significant differences were observed in the reproductive parameters such as litter size, litter weight, and milk production. Our study revealed a significant decrease in perinatal and pre-weaning mortality rates among rabbit kits born to mothers receiving n-3 integrated diets. This finding likely results from the transfer of n-3 from mother to offspring during both pregnancy and lactation, potentially strengthening the litters' immune defenses. While further studies are needed to elucidate the underlying mechanisms of action, dietary integration with extruded linseed and alga Padina pavonica extract shows promise as a strategy to physiologically enhance female rabbit reproductive performance and improve the survival of the litter, all in accordance with animal welfare principles. This study examined the effects of extruded linseed and algae Padina pavonica extract on the reproductive performance, milk production, and gastrointestinal health of female rabbits. Thirty-six nulliparous New Zealand White female rabbits were randomly assigned to three groups (n = 12) with different diets. The control group (CNT) received a standard diet, while the other two groups received modified isoenergetic diets in which part of the CNT diet ingredients were replaced with 5% extruded linseed (L5%) and 5% extruded linseed plus 0.2% Padina pavonica algae extract (L5%PP). The rabbits were monitored from artificial insemination until the weaning of the rabbit kits, evaluating different reproductive parameters. Our results indicate that extruded linseed and alga Padina pavonica extract did not affect the feed intake or body weight of female rabbits. Additionally, no clinically significant histological changes were observed at the gastrointestinal level. The reproductive parameters, including litter size, litter weight, and milk yield, showed no significant differences among groups. Notably, perinatal and pre-weaning mortalities were reduced in litters born to females receiving omega-3 integrated diets (p < 0.05). While these findings are promising, further studies are needed to confirm these results and explore the specific mechanisms by which omega-3 affects reproductive function and litter health. [ABSTRACT FROM AUTHOR]
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- 2024
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14. Identification, Safety Assessment, and Antimicrobial Characteristics of Cocci Lactic Acid Bacteria Isolated from Traditional Egyptian Dairy Products.
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Elsaadany, Khaled, EL-Sayed, Abeer I. M., and Awad, Sameh
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LACTIC acid bacteria ,ENTEROCOCCUS faecium ,PEDIOCOCCUS acidilactici ,LACTOCOCCUS lactis ,LACTIC acid fermentation ,RAW milk ,ENTEROCOCCUS - Abstract
The main objective of this study is to isolate and identify lactic acid bacteria (LAB) from various Egyptian dairy products, examine their antibacterial and hemolysis potential, and ensure their safety when used as starter cultures in different dairy industries. Egyptian dairy products are often made without the use of commercial starter cultures, using raw milk and artisanal methods. The most popular traditional dairy products are Laban Rayeb and Zabady, as well as the cheese varieties of Ras, Domiati, and Karish. The microbial communities used for fermentation and the diversity of lactic acid bacteria are the most important factors that can affect the quality of these products. In order to investigate the diversity of cocci lactic acid bacteria in Egyptian dairy products, 70 samples of raw or fermented milk and cheeses were collected from traditional cheese-making factories, local markets, and farmhouses located in the Delta area of Egypt. Following this, the LAB were isolated from the samples. One hundred fifty-seven isolates of Gram-positive, catalase-negative, and cocci bacterial species were identified via rep-PCR, and some isolates were confirmed using pheS and 16S rRNA gene sequencing, as follows: Streptococcus infantarius subsp. infantarius (three isolates), Enterococcus hirae (three isolates), Enterococcus faecium (ninety-six isolates), Enterococcus faecalis (forty isolates), Enterococcus durans (six isolates), Lactococcus garvieae (one isolate), Pediococcus acidilactici (seven isolates), and Lactococcus lactis subsp. Lactis (one isolate). These findings validate that five strains have strong antibacterial activity against Escherichia coli, Salmonella typhimurium, and Listeria monocytogenes, and one hundred thirty-four strains were safe for hemolysis. The five strains were selected as protective cultures, including Pediococcus acidilactici, Lactococcus lactis subsp. lactis, E. faecalis, and E. faecium. [ABSTRACT FROM AUTHOR]
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- 2024
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15. Hydraulic and Hydrogeochemical Characterization of Carbonate Aquifers in Arid Regions: A Case from the Western Desert, Egypt.
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Khalil, Mahmoud M., Mahmoud, Mostafa, Alexakis, Dimitrios E., Gamvroula, Dimitra E., Youssef, Emad, El-Sayed, Esam, Farag, Mohamed H., Ahmed, Mohamed, Li, Peiyue, Ali, Ahmed, and Ismail, Esam
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CARBONATE rocks ,GROUNDWATER management ,ARID regions ,HYDRAULIC conductivity ,BRACKISH waters ,SALTWATER encroachment - Abstract
Using geochemical and pumping test data from 80 groundwater wells, the chemical, hydrologic, and hydraulic properties of the fractured Eocene carbonate aquifer located west of the Al-Minya district, the Western Desert, Egypt, have been characterized and determined to guarantee sustainable management of groundwater resources under large-scale desert reclamation projects. The hydrochemical data show that groundwater from the fractured Eocene carbonate aquifer has a high concentration of Na
+ and Cl− and varies in salinity from 2176 to 2912 mg/L (brackish water). Water–rock interaction and ion exchange processes are the most dominant processes controlling groundwater composition. The carbonate aquifer exists under confined to semi-confined conditions, and the depth to groundwater increases eastward. From the potentiometric head data, deep-seated faults are the suggested pathways for gas-rich water ascending from the deep Nubian aquifer system into the overlying shallow carbonate aquifer. This mechanism enhances the dissolution and karstification of carbonate rocks, especially in the vicinity of faulted sites, and is supported by the significant loss of mud circulation during well drilling operations. The average estimated hydraulic parameters, based on the analysis of step-drawdown, long-duration pumping and recovery tests, indicate that the Eocene carbonate aquifer has a wide range of transmissivity (T) that is between 336.39 and 389,309.28 m2 /d (average: 18,405.21 m2 /d), hydraulic conductivity (K) between 1.31 and 1420.84 m/d (average: 70.29 m/d), and specific capacity (Sc) between 44.4 and 17,376.24 m2 /d (average: 45.24 m2 /d). On the other hand, the performance characteristics of drilled wells show that well efficiency ranges between 0.47 and 97.08%, and well losses range between 2.92 and 99.53%. In addition to variations in carbonate aquifer thickness and clay/shale content, the existence of strong karstification features, i.e., fissures, fractures or caverns, and solution cavities, in the Eocene carbonate aquifer are responsible for variability in the K and T values. The observed high well losses might be related to turbulent flow within and adjacent to the wells drilled in conductive fracture zones. The current approach can be further used to enhance local aquifer models and improve strategies for identifying the most productive zones in similar aquifer systems. [ABSTRACT FROM AUTHOR]- Published
- 2024
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16. Dietary Effect of a Plant-Based Mixture (Phyto AquaMeric) on Growth Performance, Biochemical Analysis, Intestinal Histology, Gene Expression and Environmental Parameters of Nile Tilapia (Oreochromis niloticus).
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El-Sayed, Abdel-Fattah M., Fagnon, Mahougnon Simeon, Hamdan, Amira M., Chabrillat, Thibaut, Araujo, Coralie, Bouriquet, Julie, Kerros, Sylvain, and Zeid, Salma M. S.
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NILE tilapia , *ESSENTIAL oils , *SUPEROXIDE dismutase , *DIETARY supplements , *VITAMIN C - Abstract
This study aimed to assess the effect of dietary supplementation of a mixture of botanical compounds and essential oil (Phyto AquaMeric, PAM) on the growth, immune and antioxidant parameters and environmental benefits in Nile tilapia. Two diets including a control and a PAM-supplemented diet at 0.5 g kg−1 were prepared for the trial. The diets were isonitrogenous (30% crude protein) and isoenergetic (17 MJ kg−1) extruded diets. Nile tilapia weighing initially 74.22 ± 1.96 g fish−1 were stocked in 2 m3 hapas at a density of 20 fish per m3 (40 fish per hapa). Each group was tested in triplicates over 80 days. The antioxidant potential of PAM was compared to vitamin C through KRL test, showing a higher value from 35 to 100 mg. The in vivo trial did not exhibit any significant growth performance improvement. However, the PAM group had a significantly improved feed conversion ratio (FCR) and protein efficiency ratio (PER). Moreover, the antioxidant enzymes superoxide dismutase (SOD) and glutathione peroxidase (GPx), Malondialdehyde (MDA), immune parameters (ACH50, lysozyme, phagocytic and phenoloxidase activities), digestive enzymes and hepatic enzymes were significantly improved in the PAM-fed group. An evaluation of eutrophication potential of PAM supplementation revealed a low input in the system. In conclusion, this mixture of botanicals and essential oil exhibited in vitro and in vivo antioxidant potential, improved health and digestive parameters and contributed to a reduced eutrophication risk in the tilapia production system. [ABSTRACT FROM AUTHOR]
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- 2024
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17. Computational Analysis and Experimental Data Exploring the Role of Hesperetin in Ameliorating ADHD and SIRT1/Nrf2/Keap1/OH-1 Signaling.
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Mokhtar, Hatem I., Abd El-Fadeal, Noha M., El-Sayed, Rehab M., Hegazy, Ann, El-Kherbetawy, Mohamed K., Hamad, Ahmed G., ElSayed, Mohamed H., and Zaitone, Sawsan A.
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ATTENTION-deficit hyperactivity disorder ,MONOSODIUM glutamate ,SIRTUINS ,HYPERKINESIA ,GENE expression - Abstract
Attention deficit hyperactivity disorder (ADHD) manifests as poor attention, hyperactivity, as well as impulsive behaviors. Hesperetin (HSP) is a citrus flavanone with strong antioxidant and anti-inflammatory activities. The present study aimed to test hesperetin efficacy in alleviating experimental ADHD in mice and its influence on hippocampal neuron integrity and sirtuin 1 (SIRT1) signaling. An in silico study was performed to test the related proteins. Groups of mice were assigned as control, ADHD model, ADHD/HSP (25 mg/kg), and ADHD/HSP (50 mg/kg). ADHD was induced by feeding with monosodium glutamate (0.4 g/kg, for 8 weeks) and assessed by measuring the motor and attentive behaviors (open filed test, Y-maze test, and marble burying test), histopathological examination of the whole brain tissues, and estimation of inflammatory markers. The in-silico results indicated the putative effects of hesperetin on ADHD by allowing the integration and analysis of large-scale genomic, transcriptomic, and proteomic data. The in vivo results showed that ADHD model mice displayed motor hyperactivity and poor attention in the behavioral tasks and shrank neurons at various hippocampal regions. Further, there was a decline in the mRNA expression and protein levels for SIRT1, the erythroid 2-related factor-2 (Nrf2), kelch like ECH associated protein 1 (Keap1) and hemeoxygenase-1 (OH-1) proteins. Treatment with HSP normalized the motor and attentive behaviors, prevented hippocampal neuron shrinkage, and upregulated SIRT1/Nrf2/Keap1/OH-1 proteins. Taken together, HSP mainly acts by its antioxidant potential. However, therapeutic interventions with hesperetin or a hesperetin-rich diet can be suggested as a complementary treatment in ADHD patients but cannot be suggested as an ADHD treatment per se as it is a heterogeneous and complex disease. [ABSTRACT FROM AUTHOR]
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- 2024
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18. Comparative Analysis of Water Hammer Performance in Different Pipe Parameters with FSI.
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Kandil, Mostafa, El-Sayed, Tamer A., and Kamal, Ahmed M.
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WATER hammer ,THEORY of wave motion ,GLASS-reinforced plastics ,STRESS waves ,NODULAR iron - Abstract
Water hammer (WH) is a critical phenomenon in fluid-filled piping systems that can lead to severe pressure surges and structural damage. The characteristics of the pipe material, geometry, and support conditions play a crucial role in the fluid–structure interaction (FSI) during WH events. This study investigates the impact of various pipe parameters, including material, length, thickness, and diameter, on the WH behavior using an FSI-based numerical approach. A comprehensive computational model was developed based on the algorithm presented in Delft Hydraulics Benchmark Problem (A) to simulate the WH phenomenon in pipes made of different materials, such as steel, copper, ductile iron, PPR (polypropylene random copolymer), and GRP (glass-reinforced plastic). This study examines the influence of pipe parameters on WH performance in pipelines, utilizing FSI to analyze the phenomenon. The results show that the pipe material has a significant influence on the pressure wave speed, stress wave propagation, and the overall system response during WH. Pipes with lower modulus of elasticity, such as PPR and GRP, exhibit lower pressure wave speeds but higher stress wave speeds compared with steel pipes. Increasing the elastic modulus, pipe wall thickness, length, and diameter enhances the pipe's stiffness and impacts the timing, magnitude of pressure surges, and the likelihood of cavitation. The findings of this study provide valuable insights into the design and mitigation of WH in piping systems. [ABSTRACT FROM AUTHOR]
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- 2024
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19. Thiophene-Linked 1,2,4-Triazoles: Synthesis, Structural Insights and Antimicrobial and Chemotherapeutic Profiles †.
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El-Emam, Nada A., El-Ashmawy, Mahmoud B., Mohamed, Ahmed A. B., Habib, El-Sayed E., Thamotharan, Subbiah, Abdelbaky, Mohammed S. M., Garcia-Granda, Santiago, and Moustafa, Mohamed A. A.
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DNA topoisomerase II ,GRAM-positive bacteria ,GRAM-negative bacteria ,MOLECULAR docking ,TRIAZOLE derivatives - Abstract
The reaction of thiophene-2-carbohydrazide 1 or 5-bromothiophene-2-carbohydrazide 2 with various haloaryl isothiocyanates and subsequent cyclization by heating in aqueous sodium hydroxide yielded the corresponding 4-haloaryl-5-(thiophen-2-yl or 5-bromothiophen-2-yl)-2,4-dihydro-3H-1,2,4-triazole-3-thione 5a-e. The triazole derivatives 5a and 5b were reacted with different secondary amines and formaldehyde solution to yield the corresponding 2-aminomethyl-4-haloaryl-2,4-dihydro-3H-1,2,4-triazole-3-thiones 6a–e, 7a–e, 8, 9, 10a and 10b in good yields. The in vitro antimicrobial activity of compounds 5a–e, 6a–e, 7a–d, 8, 9, 10a and 10b was evaluated against a panel of standard pathogenic bacterial and fungal strains. Compounds 5a, 5b, 5e, 5f, 6a–e, 7a–d, 8, 9, 10a and 10b showed marked activity, particularly against the tested Gram-positive bacteria and the Gram-negative bacteria Escherichia coli, and all the tested compounds were almost inactive against all the tested fungal strains. In addition, compounds 5e, 6a–e, 7a–d and 10a exhibited potent anti-proliferative activity, particularly against HepG-2 and MCF-7 cancer cell lines (IC
50 < 25 μM). A detailed structural insight study based on the single crystals of compounds 5a, 5b, 6a, 6d and 10a is also reported. Molecular docking studies of the highly active antibacterial compounds 5e, 6b, 6d, 7a and 7d showed a high affinity for DNA gyrase. Meanwhile, the potent anti-proliferative activity of compounds 6d, 6e and 7d may be attributed to their high affinity for cyclin-dependent kinase 2 (CDK2). [ABSTRACT FROM AUTHOR]- Published
- 2024
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20. An Investigation of the Photonic Application of TeO 2 -K 2 TeO 3 -Nb 2 O 5 -BaF 2 Glass Co-Doped with Er 2 O 3 /Ho 2 O 3 and Er 2 O 3 /Yb 2 O 3 at 1.54 μm Based on Its Thermal and Luminescence Properties.
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Boussetta, Ahlem, Al-Syadi, Aref M., Albargi, Hasan B., Damak, Kamel, Ersundu, Ali Erçin, Ersundu, Miray Çelikbilek, Ramadan, Essam, Alshehri, Ali M., Hussein, Khalid I., Maalej, Ramzi, and Yousef, El Sayed
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SOLID-state lasers ,OPTICAL susceptibility ,REFRACTIVE index ,RADIATIVE transitions ,BRANCHING ratios - Abstract
A glass composition using TeO
2 -K2 TeO3 -Nb2 O5 -BaF2 co-doped with Er2 O3 /Ho2 O3 and Er2 O3 /Yb2 O3 was successfully fabricated. Its thermal stability and physical parameters were studied, and luminescence spectroscopy of the fabricated glasses was conducted. The optical band gap, Eopt , decreased from 2.689 to 2.663 eV following the substitution of Ho2 O3 with Yb2 O3 . The values of the refractive index, third-order nonlinear optical susceptibility (χ(3) ), and nonlinear refractive index (n2 ) of the fabricated glasses were estimated. Furthermore, the Judd–Ofelt intensity parameters Ω t (t = 2 , 4 , 6) , radiative properties such as transition probabilities (Aed ), magnetic dipole-type transition probabilities (Amd ), branching ratios (β), and radiative lifetime (τ) of the fabricated glasses were evaluated. The emission cross-section and FWHM of the4 I13/2 →4 I15/2 transition around 1.54 μm of the glass were reported, and the emission intensity of the visible signal was studied under 980 nm laser excitation. The material might be a useful candidate for solid lasers and nonlinear amplifier devices, especially in the communications bands. [ABSTRACT FROM AUTHOR]- Published
- 2024
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21. Editorial for the Special Issue of "Fractional Differential and Fractional Integro-Differential Equations: Qualitative Theory, Numerical Simulations, and Symmetry Analysis".
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Tunç, Cemil, Yao, Jen-Chih, Benchohra, Mouffak, and El-Sayed, Ahmed M. A.
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NONLINEAR differential equations ,DIFFERENTIAL operators ,INITIAL value problems ,FUNCTIONAL equations ,FRACTIONAL calculus ,INTEGRO-differential equations - Abstract
This document is an editorial for a special issue of the journal "Symmetry" focused on qualitative studies of fractional differential equations, fractional integro-differential equations, and related topics. The editorial provides an overview of the published articles in the special issue, summarizing their contents and contributions. The articles cover a range of topics, including numerical simulations of fractional differential equations, analysis of cancer models using stem cells and chemotherapy, analysis of image segmentation algorithms, and control of bioreactors using fractional order models. The editorial concludes by listing the authors and titles of the contributions. [Extracted from the article]
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- 2024
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22. Polyphenol-Rich Extracts and Essential Oil from Egyptian Grapefruit Peel as Potential Antioxidant, Antimicrobial, and Anti-Inflammatory Food Additives.
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Ibrahim, Faten Mohamed, Abdelsalam, Eman, Mohammed, Reda Sayed, Ashour, Wedian El Sayed, Vilas-Boas, Ana A., Pintado, Manuela, and El Habbasha, El Sayed
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FOOD additives ,ESSENTIAL oils ,GRAPEFRUIT ,CIRCULAR economy ,PLANT polyphenols ,CHLOROGENIC acid ,NATURAL foods industry - Abstract
Featured Application: The bio-based food additives obtained from upcycling grapefruit peels can be used mainly in the food industry as natural antioxidant and antimicrobial alternatives. Additionally, these ingredients also show anti-inflammatory potential, underscoring their potential as a nutraceutical. Grapefruit (GF) processing generates significant nutrient and economic losses due to the production of 50% by-products, primarily peels. GF peels are a rich and sustainable source of bioactive compounds (BCs), such as essential oils (EOs) and phenolic compounds. Thus, finding value-added solutions based on a circular economy is paramount. This research aims to assess the antioxidant, anti-inflammatory, and antimicrobial properties of a hydroethanolic polyphenol-rich extract from crude GF peels (GF-CE), essential oil (GF-EO), and polyphenol-rich extract from GF peels after essential oil extraction (GF-PE). The GF-CE and GF-PE showed high concentrations of naringenin (7.71 and 48.60 mg/g dry extract (DE)), narirutin (15.03 and 28.73 mg/g DE), and hesperidin (0.67 and 0.29 mg/mL), respectively. Extracting firstly EOs from GF improved the release of phenolic acids (p-coumaric, ferulic, and chlorogenic acid). The GF-CE exhibited stronger free radical scavenging activity mainly in DPPH (IC50 = 75.69 ± 0.81 µg/mL) than GF-EO (1271 ± 0.85 µg/mL) and GF-PE (113.45 ± 0.85 µg/mL). The GF-EO demonstrated moderate antimicrobial activity against Gram-positive bacteria compared to the reference standard (amoxicillin) and strong activity against the yeast Candida albicans (inhibition zone of 16 mm). The major compounds in the GF-EO included D-limonene (25%), nootkatone (24%), and β-pinene (8%). Both polyphenol-rich extracts showed promising activities as COX1 and COX2 inhibitors with IC50 values of 25 ± 0.1 and 0.28 ± 0.00 µg/mL (compared to celecoxib (97.5 ± 0.1 and 0.31 ± 0.01 µg/mL) and indomethacin (6.25 ± 0.00 and 0.52 ± 0.01 µg/mL) as the standards), respectively. The study concludes that GF peels are a valuable source of BCs with significant bioactivities, offering a sustainable multi-cascade approach to recovering value-added compounds from GF peels in alignment with circular economy principles and open opportunities as functional ingredients for food applications. [ABSTRACT FROM AUTHOR]
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- 2024
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23. Analysis of Wheat-Yield Prediction Using Machine Learning Models under Climate Change Scenarios.
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Iqbal, Nida, Shahzad, Muhammad Umair, Sherif, El-Sayed M., Tariq, Muhammad Usman, Rashid, Javed, Le, Tuan-Vinh, and Ghani, Anwar
- Abstract
Climate change has emerged as one of the most significant challenges in modern agriculture, with potential implications for global food security. The impact of changing climatic conditions on crop yield, particularly for staple crops like wheat, has raised concerns about future food production. By integrating historical climate data, GCM (CMIP3) projections, and wheat-yield records, our analysis aims to provide significant insights into how climate change may affect wheat output. This research uses advanced machine learning models to explore the intricate relationship between climate change and wheat-yield prediction. Machine learning models used include multiple linear regression (MLR), boosted tree, random forest, ensemble models, and several types of ANNs: ANN (multi-layer perceptron), ANN (probabilistic neural network), ANN (generalized feed-forward), and ANN (linear regression). The model was evaluated and validated against yield and weather data from three Punjab, Pakistan, regions (1991–2021). The calibrated yield response model used downscaled global climate model (GCM) outputs for the SRA2, B1, and A1B average collective CO
2 emissions scenarios to anticipate yield changes through 2052. Results showed that maximum temperature (R = 0.116) was the primary climate factor affecting wheat yield in Punjab, preceding the T m i n (R = 0.114), while rainfall had a negligible impact (R = 0.000). The ensemble model (R = 0.988, nRMSE= 8.0%, MAE = 0.090) demonstrated outstanding yield performance, outperforming Random Forest Regression (R = 0.909, nRMSE = 18%, MAE = 0.182), ANN(MLP) (R = 0.902, MAE = 0.238, nRMSE = 17.0%), and boosting tree (R = 0.902, nRMSE = 20%, MAE = 0.198). ANN(PNN) performed inadequately. The ensemble model and RF showed better yield results with R 2 = 0.953, 0.791. The expected yield is 5.5% lower than the greatest average yield reported at the site in 2052. The study predicts that site-specific wheat output will experience a significant loss due to climate change. This decrease, which is anticipated to be 5.5% lower than the highest yield ever recorded, points to a potential future loss in wheat output that might worsen food insecurity. Additionally, our findings highlighted that ensemble approaches leveraging multiple model strengths could offer more accurate and reliable predictions under varying climate scenarios. This suggests a significant potential for integrating machine learning in developing climate-resilient agricultural practices, paving the way for future sustainable food security solutions. [ABSTRACT FROM AUTHOR]- Published
- 2024
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24. Spatiotemporal Variation of Soil Erosion in the Northern Foothills of the Qinling Mountains Using the RUSLE Model.
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Cheng, Yuxiang, Huo, Aidi, Liu, Feng, Ahmed, Adnan, Abuarab, Mohamed EL-Sayed, Elbeltagi, Ahmed, and Kucher, Dmitri Evgenievich
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UNIVERSAL soil loss equation ,SOIL management ,MOUNTAIN soils ,ECOLOGICAL regions ,WATER conservation ,SOIL erosion ,SOIL conservation - Abstract
The Qinling region in central China, known as the 'Dragon Vein of China', is a vital ecological barrier facing significant soil erosion challenges. This study aims to enhance soil erosion management and analyse the spatiotemporal changes of soil erosion in the northern foothills of the Qinling Mountains. We collected data on precipitation, terrain, land use types, and soil in the designated region. Using GIS technology and the Revised Universal Soil Loss Equation (RUSLE) model, we created a detailed soil erosion map and analysed its evolution from 2018 to 2022. Results show a significant reduction in soil erosion in 2020–2021 despite a general upward trend in other years. Innovation includes integrating remote sensing with RUSLE for high-precision mapping and introducing a hierarchical approach for erosion risk assessment. The study found erosion peaks in summer and autumn, with higher levels in the southern parts compared to the northern parts. Influential factors include climate variables, human activities, soil, and vegetation types. The average soil erosion modulus in 2023 is 233.515 t/(km
2 ·a), with total soil erosion of 85,233.046 t/a, mainly concentrated in the valley and mountain basin areas. This research provides a theoretical basis for improving the natural environment and implementing comprehensive soil and water conservation measures in the Qinling region, offering a model for similar ecological regions globally. [ABSTRACT FROM AUTHOR]- Published
- 2024
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25. Green Synthesis of Yttrium Derivatives Nanoparticles Using Pine Needle Leaf Extract: Characterization, Docking, Antibacterial, and Antioxidant Potencies.
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Darwich, Nourhane A., Mezher, Malak, Abdallah, Alaa M., El-Sayed, Ahmed F., El Hajj, Rana, Hamdalla, Taymour A., and Khalil, Mahmoud I.
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YTTRIUM oxides ,FOURIER transform infrared spectroscopy ,X-ray photoelectron spectroscopy ,ESCHERICHIA coli ,SUSTAINABILITY ,ULTRAVIOLET spectroscopy - Abstract
Green nanoparticles are synthesized using environmentally friendly methods, and natural materials hold significant importance. This makes the process environmentally sustainable and reduces the production of harmful waste by-products. Green nanoparticles exhibit reduced toxicity which is crucial for biomedical applications. The current study suggested that yttrium nanoparticles (YNPs) should be synthesized, characterized, and evaluated for their diverse biological applications due to the rise in antibacterial resistance. The YNPs were prepared using a pine needle leaf extract (PNLE). The structural and morphological features have been investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL), Fourier transform infrared spectroscopy (FTIR), ultraviolet–visible spectroscopy (UV–vis), and vibrating sample magnetometry (VSM). The XRD pattern demonstrated the presence of yttrium oxide and yttrium nitrate phases. The crystallite size and particle size of the synthesized YNPs measured 1.696 nm and 24.55 nm, respectively. The XPS peaks showed two components with binding energies at 530.940 eV and 532.18 eV due to the bond between O–Y and OH–Y, respectively. Additionally, the ferromagnetic nature of the YNPs was confirmed by VSM analysis. The YNPs were tested for antibacterial activity on six uropathogenic bacteria (S. aureus, S. haemolyticus, E. faecalis, E. coli, K. pneumonia, and P. aeruginosa) using the microdilution assays, to find the minimum inhibitory concentration (MIC) as well as the minimum bactericidal concentration (MBC), the agar well diffusion assay, and antibiofilm screening assays, where they showed bacteriostatic action against all isolates (0.5–1 mg/mL MIC) and significant inhibition of biofilm formation (80% inhibition rate). The antioxidant capacity assessed by 1,1, diphenyl-2-picrylhydrazyl (DPPH) radical scavenging revealed 50% DPPH scavenging. Moreover, docking studies exhibited that YNPs inhibit crucial bacterial enzymes, including DNA gyrase, penicillin-binding proteins, carbapenemase, LasR-binding protein, and dihydropteroate synthase. These findings may explain the mechanisms responsible for the observed antibacterial effects of YNPs. Overall, these findings underscore YNPs as promising candidates for antioxidant and antibacterial applications. [ABSTRACT FROM AUTHOR]
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- 2024
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26. The Transcript Levels and the Serum Profile of Biomarkers Associated with Clinical Endometritis Susceptibility in Buffalo Cows.
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El-Sayed, Ahmed, Faraj, Salah H., Marghani, Basma H., Safhi, Fatmah A., Abdo, Mohamed, Fericean, Liana, Banatean-Dunea, Ioan, Alexandru, Cucui-Cozma, Alhimaidi, Ahmad R., Ammari, Aiman A., Eissa, Attia, and Ateya, Ahmed
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BUTYRIC acid ,HYDROXY acids ,GENE expression profiling ,GENE expression ,COPPER - Abstract
Simple Summary: Endometritis is defined as a localized inflammatory condition of the endometrium that results in significant financial losses. This investigation used forty buffalo cows with clinical endometritis that were infected and forty seemingly healthy buffalo cows who served as the control group made up the two groups of buffalo cows. The expression levels and the serum characteristics of immune and antioxidant biomarkers linked to clinical endometritis risk varied between the investigated two categories of buffalo cows. The alteration in the profile of explored markers suggests a potential source for uterine health indicators in buffaloes. Determining the gene expression and serum profile of the indicators linked to clinical endometritis susceptibility in Egyptian buffalo cows was the aim of this investigation. The buffalo cows that were enrolled were divided into two groups: forty infected buffalo cows with clinical endometritis and forty seemingly healthy buffalo cows that served as the control group. For the purposes of gene expression and biochemical analysis, ten milliliters of blood was obtained via jugular venipuncture from each buffalo cow. TLR4, IL-8, IL-17, NFKB, SLCA11A1, NCF4, Keap1, HMOX1, OXSR1, ST1P1, and SERP1 were manifestly expressed at much higher levels in the buffaloes with endometritis. On the other hand, the genes that encode SOD, CAT, NDUFS6, Nrf2, and PRDX2 were down-regulated. There was a significant (p < 0.05) elevation of the serum levels of non-esterified fatty acids (NEFAs), beta hydroxy butyric acid (BHBA), triglycerides (TGs), globulin, creatinine, and cortisol, along with a reduction in the serum levels of glucose, cholesterol, total protein albumin, urea, estrogen (E2), progesterone (P4), follicle-stimulating hormone (FSH), luteinizing hormone (LH), thyroxine (T4), prostaglandin F2 α (PGF2α), calcium, iron, and selenium, in the endometritis group in comparison with the control. However, no significant change was observed in the values of phosphorus, magnesium, copper, or zinc in either group. Within the selective breeding of naturally resistant animals, the variation in the genes under study and the changes in the serum profiles of the indicators under investigation may serve as a reference guide for reducing endometritis in Egyptian buffalo cows. [ABSTRACT FROM AUTHOR]
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- 2024
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27. Behavior of Lightweight Self-Compacting Concrete with Recycled Tire Steel Fibers.
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Alabdulkarim, Abdullah, El-Sayed, Ahmed K., Alsaif, Abdulaziz S., Fares, Galal, and Alhozaimy, Abdulrahman M.
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MECHANICAL behavior of materials ,LIGHTWEIGHT concrete ,FIBER-reinforced concrete ,COMPOSITE materials ,TIRE recycling ,SELF-consolidating concrete - Abstract
The utilization of recycled materials in concrete technology has gained significant attention in recent years, promoting sustainability and resource conservation. This paper investigates the behavior of lightweight self-compacting concrete (LWSCC) with recycled tire steel fibers (RTSFs). The effects of RTSFs on the flowability of the composite material and its density were assessed. The mechanical properties of the developed material were examined and beam tests were performed, aiming to assess its feasibility for structural applications. The compressive and tensile strengths were determined to evaluate the mechanical properties of the developed concrete mixtures. The beam tests were conducted to assess the flexural behavior of the beam specimens. Three different steel fiber contents of 0, 0.5, and 1% volumetric fractions of concrete were used in this study. The test results indicate that incorporating the fibers did not negatively impact the flowability and density of the LWSCC mixtures. In addition, the use of RTSFs enhanced the tensile strength of the developed concrete mixtures, where fibrous concrete showed increases in the splitting tensile strength in the range of 38 to 76% over that of non-fibrous concrete. On the other hand, the compressive strength of the mixtures was not affected. The test beams with RTSFs exhibited improved flexural performance in terms of delaying and controlling cracking, enhancing ultimate load, and increasing ductility. Compared with the control non-fibrous beam, the increases in the cracking load, ultimate load, and ductility index were up to 63.8, 9.3, and 16%, respectively. The test results of the beams were compared with theoretical predictions, and good agreement was found. [ABSTRACT FROM AUTHOR]
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- 2024
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28. Investigation of Thermal and Spectroscopic Properties of Tellurite-Based Glasses Doped with Rare-Earth Oxides for Infrared Solid-State Lasers.
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Boussetta, Ahlem, Al-Syadi, Aref M., Damak, Kamel, Ersundu, Ali Erçin, Çelikbilek Ersundu, Miray, Ramadan, Essam, Alshehri, Ali M., Hussein, Khalid I., Maalej, Ramzi, and Yousef, El Sayed
- Subjects
SOLID-state lasers ,MID-infrared lasers ,INFRARED lasers ,QUALITY factor ,REFRACTIVE index - Abstract
The thermal and optical properties of 60TeO
2 -20K2 TeO3 -10WO3 -10Nb2 O5 (in mol%) glasses doped with Ho2 O3 , Er2 O3 , and Tm2 O3 were explored in the present work. The thermal stability, refractive index n, extinction coefficient k, absorption coefficient α, and optical band gap of the glasses were evaluated. The UV–Vis–NIR absorption spectra, the Judd–Ofelt intensity parameter, the spectroscopic quality factor, and the emission and absorption cross-sections were calculated to investigate the effects of Er3+ and Tm3+ , respectively, on the band spectroscopic properties of Ho3+ ions. The results showed that the maximum emission cross-section was approximately 8 × 10 − 21 c m 2 , and the values of the full width at half maximum ( F W H M) , quality factor ( σ e × F W H M) , and gain coefficient of Ho3+ :5 I7 →5 I8 were also reported. The value of the F W H M × σ e was 1200 × 10 − 28 c m 3 , which showed greater gain characteristics than earlier study results. For 2 μ m mid-infrared solid-state lasers, the glasses that were examined might be a good host material. [ABSTRACT FROM AUTHOR]- Published
- 2024
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29. Molecular Detection of Theileria ovis , Anaplasma ovis, and Rickettsia spp. in Rhipicephalus turanicus and Hyalomma anatolicum Collected from Sheep in Southern Xinjiang, China.
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Li, Yongchang, Li, Jianlong, Xieripu, Gulaimubaier, Rizk, Mohamed Abdo, Macalanda, Adrian Miki C., Gan, Lu, Ren, Jichao, Mohanta, Uday Kumar, El-Sayed, Shimaa Abd El-Salam, Chahan, Bayin, Xuan, Xuenan, and Guo, Qingyong
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TICK-borne diseases ,SHEEP farming ,RHIPICEPHALUS ,SHEEP industry ,HYALOMMA ,RICKETTSIA - Abstract
The Xinjiang Uygur Autonomous Region (Xinjiang) borders eight countries and has a complex geographic environment. There are almost 45.696 million herded sheep in Xinjiang, which occupies 13.80% of China's sheep farming industry. However, there is a scarcity of reports investigating the role of sheep or ticks in Xinjiang in transmitting tick-borne diseases (TBDs). A total of 894 ticks (298 tick pools) were collected from sheep in southern Xinjiang. Out of the 298 tick pools investigated in this study, Rhipicephalus turanicus (Rh. turanicus) and Hyalomma anatolicum (H. anatolicum) were identified through morphological and molecular sequencing. In the southern part of Xinjiang, 142 (47.65%), 86 (28.86%), and 60 (20.13%) tick pools were positive for Rickettsia spp., Theileria spp., and Anaplasma spp., respectively. Interestingly, the infection rate of Rickettsia spp. (73%, 35.10%, and 28.56–41.64%) was higher in Rh. turanicus pools than in H. anatolicum pools (4%, 4.44%, and 0.10–8.79%) in this study. Fifty-one tick pools were found to harbor two pathogens, while nineteen tick pools were detected to have the three pathogens. Our findings indicate the presence of Rickettsia spp., Theileria spp., and Anaplasma spp. potentially transmitted by H. anatolicum and Rh. turanicus in sheep in southern Xinjiang, China. [ABSTRACT FROM AUTHOR]
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- 2024
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30. The Effect of Proportional, Proportional-Integral, and Proportional-Integral-Derivative Controllers on Improving the Performance of Torsional Vibrations on a Dynamical System.
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Alluhydan, Khalid, EL-Sayed, Ashraf Taha, and El-Bahrawy, Fatma Taha
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TORSIONAL vibration ,DYNAMICAL systems ,NONLINEAR differential equations ,PID controllers ,STEADY-state responses ,NONLINEAR dynamical systems - Abstract
The primary goal of this research is to lessen the high vibration that the model causes by using an appropriate vibration control. Thus, we begin by implementing various controller types to investigate their impact on the system's reaction and evaluate each control's outcomes. The controller types are presented as proportional (P), proportional-integral (PI), and proportional-integral-derivative (PID) controllers. We employed PID control to regulate the torsional vibration behavior on a dynamical system. The PID controller aims to increase system stability after seeing the impact of P and PI control. This kind of control ensures that there are no unstable components in the system. By using the multiple time scale perturbation (MTSP) technique, a first-order approximate solution has been obtained. Using the frequency response function approach, the stability and steady-state response of the system at the primary resonance scenario ( Ω 1 ≅ ω 1 , Ω 2 ≅ ω 2 ) are considered as the worst resonance and addressed. Additionally examined are the nonlinear dynamical system's chaotic response and the numerical solution for various parameter values. The MATLAB programs are utilized to attain simulation outcomes. [ABSTRACT FROM AUTHOR]
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- 2024
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31. The Outcomes of Surgical Pulmonary Embolectomy for Pulmonary Embolism: A Meta-Analysis.
- Author
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Rahouma, Mohamed, Al-Thani, Shaikha, Salem, Haitham, Mahmoud, Alzahraa, Khairallah, Sherif, Shenouda, David, Sultan, Batool, Khalil, Laila, Alomari, Mohammad, Ali, Mostafa, Makey, Ian A., Haney, John C., Mick, Stephanie, and El-Sayed Ahmed, Magdy M.
- Subjects
LITERATURE reviews ,HOSPITAL mortality ,GASTROINTESTINAL hemorrhage ,DEATH rate ,CARDIAC arrest - Abstract
Objectives: The purpose of this study is to assess the efficacy, short- and long-term cardiovascular and non-cardiovascular mortalities and postoperative morbidities of surgical pulmonary embolectomy (SPE) for patients with massive or submassive pulmonary embolism. Methods: A comprehensive literature review was performed to identify articles reporting SPE for pulmonary embolism. The outcomes included in-hospital and long-term mortality in addition to postoperative morbidities. The random effect inverse variance method was used. Cumulative meta-analysis, leave-one-out sensitivity analysis, subgroup analysis and meta-regression were performed. Results: Among the 1949 searched studies in our systematic literature search, 78 studies met our inclusion criteria, including 6859 cases. The mean age ranged from 42 to 65 years. The percentage of males ranged from 25.6% to 86.7%. The median rate of preoperative cardiac arrest was 27.6%. The percentage of contraindications to preoperative systemic thrombolysis was 30.4%. The preoperative systemic thrombolysis use was 11.5%. The in-hospital mortality was estimated to be 21.96% (95% CI: 19.21–24.98); in-hospital mortality from direct cardiovascular causes was estimated to be 16.05% (95% CI: 12.95–19.73). With a weighted median follow-up of 3.05 years, the late cardiovascular and non-cardiovascular mortality incidence rates were 0.39 and 0.90 per person-year, respectively. The incidence of pulmonary bleeding, gastrointestinal bleeding, surgical site bleeding, non-surgical site bleeding and wound complications was 0.62%, 4.70%, 4.84%, 5.80% and 7.2%, respectively. Cumulative meta-analysis showed a decline in hospital mortality for SPE from 42.86% in 1965 to 20.56% in 2024. Meta-regression revealed that the publication year and male sex were associated with lower in-hospital mortality, while preoperative cardiac arrest, the need for inotropes or vasopressors and preoperative mechanical ventilation were associated with higher in-hospital mortality. Conclusions: This study demonstrates acceptable perioperative mortality rates and late cardiovascular and non-cardiovascular mortality in patients who undergo SPE for massive or submassive pulmonary embolism. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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32. Stability Results for Some Classes of Cubic Functional Equations.
- Author
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El-hady, El-sayed, Sayyari, Yamin, Dehghanian, Mehdi, and Alruwaily, Ymnah
- Subjects
- *
CUBIC equations - Abstract
Applications involving functional equations (FUEQs) are commonplace. They are essential to various applications, such as fog computing. Ulam's notion of stability is highly helpful since it provides a range of estimates between exact and approximate solutions. Using Brzdȩk's fixed point technique (FPT), we establish the stability of the following cubic type functional equations (CFUEQs): F ξ 1 3 + ξ 2 3 3 + F ξ 1 3 − ξ 2 3 3 = 2 F (ξ 1) + 2 F (ξ 2) , 2 F ξ 1 3 + ξ 2 3 2 3 = F (ξ 1) + F (ξ 2) for all ξ 1 , ξ 2 ∈ R . [ABSTRACT FROM AUTHOR]
- Published
- 2024
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33. Performance Analysis of Fully Intuitionistic Fuzzy Multi-Objective Multi-Item Solid Fractional Transportation Model.
- Author
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Almotairi, Sultan, Badr, Elsayed, Elsisy, M. A., Farahat, F. A., and El Sayed, M. A.
- Subjects
MEMBERSHIP functions (Fuzzy logic) ,FUZZY sets ,SHIPMENT of goods ,COST - Abstract
An investigation is conducted in this paper into a performance analysis of fully intuitionistic fuzzy multi-objective multi-item solid fractional transport model (FIF-MMSFTM). It is to be anticipated that the parameters of the conveyance model will be imprecise by virtue of numerous uncontrollable factors. The model under consideration incorporates intuitionistic fuzzy (IF) quantities of shipments, costs and profit coefficients, supplies, demands, and transport. The FIF-MMSFTM that has been devised is transformed into a linear form through a series of operations. The accuracy function and ordering relations of IF sets are then used to reduce the linearized model to a concise multi-objective multi-item solid transportation model (MMSTM). Furthermore, an examination is conducted on several theorems that illustrate the correlation between the FIF-MMSFTM and its corresponding crisp model, which is founded upon linear, hyperbolic, and parabolic membership functions. A numerical example was furnished to showcase the efficacy and feasibility of the suggested methodology. The numerical data acquired indicates that the linear, hyperbolic, and parabolic models require fewer computational resources to achieve the optimal solution. The parabolic model has the greatest number of iterations, in contrast to the hyperbolic model which has the fewest. Additionally, the elapsed run time for the three models is a negligible amount of time: 0.2, 0.15, and 1.37 s, respectively. In conclusion, suggestions for future research are provided. [ABSTRACT FROM AUTHOR]
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- 2024
- Full Text
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34. Fabrication and Optimisation of Alumina Nanoporous Membranes for Drug Delivery Applications: A Comparative Study.
- Author
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Osama, Lamyaa, Handal, Hala T., El-Sayed, Sara A. M., Elzayat, Emad M., and Mabrouk, Mostafa
- Subjects
DRUG delivery devices ,OXALIC acid ,DRUG delivery systems ,SULFURIC acid ,ARTIFICIAL implants ,NEURODEGENERATION ,ALUMINUM oxide - Abstract
Neurodegenerative disorders cause most physical and mental disabilities, and therefore require effective treatment. The blood–brain barrier (BBB) prevents drug molecules from crossing from the blood to the brain, making brain drug delivery difficult. Implantable devices could provide sustained and regulated medication to solve this problem. Two electrolytes (0.3 M oxalic acid and 0.3 M sulphuric acid) were used to anodise Al
2 O3 nanoporous membranes, followed by a third anodisation in concentrated H2 SO4 to separate the through-hole membranes from the aluminium substrate. FTIR, AFM, and SEM/EDX were used to characterise the membranes' structure and morphology. The effects of the anodisation time and electrolyte type on the AAO layer pore density, diameter, interpore distance, and thickness were examined. As a model drug for neurodegenerative disorders, donepezil hydrochloride (DHC) was loaded onto thin alumina nanoporous membranes. The DHC release profiles were characterised at two concentrations using a UV–Vis spectrophotometer. Oxalic acid membranes demonstrated an average pore diameter of 39.6–32.5 nm, which was two times larger than sulphuric acid membranes (22.6–19.7 nm). After increasing the anodisation time from 3 to 5 h, all of the membranes showed a reduction in pore diameter that was stable regardless of the electrolyte type or period. Drug release from oxalic acid-fabricated membranes was controlled and sustained for over 2 weeks. Thus, nanoporous membranes as implantable drug delivery systems could improve neurodegenerative disease treatment. [ABSTRACT FROM AUTHOR]- Published
- 2024
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35. Tumor-Agnostic Therapy—The Final Step Forward in the Cure for Human Neoplasms?
- Author
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El-Sayed, Mohamed Mahmoud, Bianco, Julia Raffaella, Li, YiJing, and Fabian, Zsolt
- Subjects
- *
TUMORS , *PROGRESSION-free survival , *DNA mismatch repair , *COLORECTAL cancer , *CANCER cells , *HOMEOSTASIS - Abstract
Cancer accounted for 10 million deaths in 2020, nearly one in every six deaths annually. Despite advancements, the contemporary clinical management of human neoplasms faces a number of challenges. Surgical removal of tumor tissues is often not possible technically, while radiation and chemotherapy pose the risk of damaging healthy cells, tissues, and organs, presenting complex clinical challenges. These require a paradigm shift in developing new therapeutic modalities moving towards a more personalized and targeted approach. The tumor-agnostic philosophy, one of these new modalities, focuses on characteristic molecular signatures of transformed cells independently of their traditional histopathological classification. These include commonly occurring DNA aberrations in cancer cells, shared metabolic features of their homeostasis or immune evasion measures of the tumor tissues. The first dedicated, FDA-approved tumor-agnostic agent's profound progression-free survival of 78% in mismatch repair-deficient colorectal cancer paved the way for the accelerated FDA approvals of novel tumor-agnostic therapeutic compounds. Here, we review the historical background, current status, and future perspectives of this new era of clinical oncology. [ABSTRACT FROM AUTHOR]
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- 2024
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36. Estimating Soil Erodible Fraction Using Multivariate Regression and Proximal Sensing Data in Arid Lands, South Egypt.
- Author
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Abd-Elazem, Alaa H., El-Sayed, Moatez A., Fadl, Mohamed E., Zekari, Mohammedi, Selmy, Salman A. H., Drosos, Marios, Scopa, Antonio, and Moursy, Ali R. A.
- Subjects
- *
ARID regions , *PARTIAL least squares regression , *SOIL science , *DATA distribution , *WIND erosion - Abstract
Estimating soil erodible fraction based on basic soil properties in arid lands is a valuable research topic in the field of soil science and land management. The Proximal Sensing (PS) technique offers a non-destructive and efficient method to assess wind erosion potential in arid regions. By using Partial Least Squares Regression (PLSR) and Support Vector Machine (SVM) models and combining soil texture and chemical properties, determined through Visible-Near Infrared (vis-NIR) spectroscopy in 96 soil samples, this study aims to predict soil erodibility, soil organic matter (SOM), and calcium carbonate equivalent (CaCO3) in arid lands located in Elkobaneyya Valley, Aswan Governorate, Egypt. Results showed that the soil erodibility fraction (EF-Factor) had the highest values and possessed a strong relationship between slope and SOM of 0.01% in determining soil erodibility. The PLSR model performed better than SVM for estimating SOM, CaCO3, and EF-Factor. Furthermore, the results showed that the spectral responses of CaCO3 were observed in separate places in the wavelengths of 570, 649, 802, 1161, 1421, 1854, and 2362 nm, and the wavelengths with SOM parameter were 496, 658, 779, 1089, 1417, 1871, and 2423 nm. The EF-factor shows the highest significant correlation with spectral reflectance values at 526, 688, 744, 1418, 1442, 2292, and 2374 nm. The accuracy and performance of the PLSR model in estimating the EF-Factor using spectral reflectance data and the distribution of data points for both the calibration and validation data-sets indicate a good accuracy of the PLSR model, with RMSE values of 0.0921 and 0.0836 Mg h MJ−1 mm−1, coefficient of determination (R2) values of 0.931 and 0.76, and RPD values of 2.168 and 2.147, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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37. Chemical and Biological Characterization of the Ethyl Acetate Fraction from the Red Sea Marine Sponge Hymedesmia sp.
- Author
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El Sayed, Zeinab I., Hassan, Wafaa H. B., Abdel-Aal, Mahmoud M., Al-Massarani, Shaza M., Abdel-Mageed, Wael M., Basudan, Omer A., Parveen, Mehtab, Abdelsalam, Eman, and Abdelaziz, Sahar
- Subjects
- *
ELECTROSPRAY ionization mass spectrometry , *ETHYL acetate , *SPONGES (Invertebrates) , *PYRIMIDINE nucleosides , *ESCHERICHIA coli , *NUCLEAR magnetic resonance - Abstract
Hymedesmiidae is one of the largest families of marine sponges and stands out as an exceptional source of variable metabolites with diverse biological activities. In this study, the ethyl acetate fraction (HE) of a Hymedesmia sp. marine sponge from the Red Sea, Egypt, was analyzed for the first time using Ultra-performance liquid chromatography electrospray ionization tandem mass spectrometry (UPLC-ESI-MS/MS) analysis. The analysis tentatively identified 29 compounds in this fraction, including the isolation and identification of six compounds (two pyrimidine nucleosides, one purine, and two pyrimidine bases in addition to one cerebroside) for the first time. The structures of the isolated compounds were established by 1D and 2D NMR (nuclear magnetic resonance), MS (mass spectrometry), and IR (infrared) spectroscopy. Furthermore, the cytotoxic, antioxidant, and antimicrobial activities of the ethyl acetate fraction were evaluated in vitro. The fraction exhibited strong DPPH scavenging activity with an IC50 of 78.7 µg/mL, compared to ascorbic acid as a positive control with an IC50 of 10.6 µg/mL. It also demonstrated significant cytotoxic activity with IC50 values of 13.5 µg/mL and 25.3 µg/mL against HCT-116 and HEP-2 cell lines, respectively, compared to vinblastine as a positive control with IC50 values of 2.34 µg/mL and 6.61 µg/mL against HCT-116 and HEP-2, respectively. Additionally, the ethyl acetate fraction displayed promising antibacterial activity against S. aureus with a MIC value of 62.5 µg/mL, compared to ciprofloxacin as a positive control with MIC values of 1.56 µg/mL for Gram-positive bacteria and 3.125 µg/mL for Gram-negative bacteria. It also exhibited activity against E. coli and P. aeruginosa with MIC values of 250 µg/mL and 500 µg/mL, respectively. Briefly, this is the first report on the biological activities and secondary metabolite content of the ethyl acetate fraction of Hymedesmia sp. marine sponge, emphasizing the potential for further research against resistant bacterial and fungal strains, as well as different cancer cell lines. The ethyl acetate fraction of Hymedesmia sp. is a promising source of safe and unique natural drugs with potential therapeutic and pharmaceutical benefits. [ABSTRACT FROM AUTHOR]
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- 2024
- Full Text
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38. Facile Synthesis of CuFe 2 O 4 Nanoparticles for Efficient Removal of Acid Blue 113 and Malachite Green Dyes from Aqueous Media.
- Author
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Al-Wasidi, Asma S., Shah, Reem K., Abdelrahman, Ehab A., and Mabrouk, El-Sayed M.
- Subjects
MALACHITE green ,FIELD emission electron microscopes ,FERRITES ,NANOPARTICLES ,SPINEL group ,COPPER ferrite ,DYES & dyeing - Abstract
This work studies the synthesis, characterization, and application of CuFe
2 O4 nanoparticles for the removal of acid blue 113 and malachite green dyes from aqueous media. Utilizing the combustion procedure, CuFe2 O4 nanoparticles were synthesized using two different fuels: L-alanine (CFA) and L-valine (CFV). Besides, the synthesized CuFe2 O4 nanoparticles were characterized through some tools, including Fourier transform infrared (FTIR), X-ray diffraction (XRD), energy-dispersive X-ray (EDX), and field emission scanning electron microscope (FE-SEM). XRD analysis verified the creation of a CuFe2 O4 cubic spinel structure without any contaminants, revealing average crystallite sizes of 26.37 and 17.65 nm for the CFA and CFV samples, respectively. The FTIR spectra exhibited peaks indicative of metal-oxygen bond stretching, verifying the presence of a spinel formation. Elemental analysis via EDX confirmed the stoichiometric composition typical of copper ferrite. In addition, FE-SEM displayed that the CFA and CFV samples are composed of particles with spherical and irregular shapes, measuring average diameters of 188.35 and 132.78 nm, respectively. The maximum adsorption capabilities of the CFA and CFV samples towards acid blue 113 dyes are 281.69 and 297.62 mg/g, respectively. Also, the maximum adsorption capabilities of the CFA and CFV products towards malachite green dye are 280.11 and 294.99 mg/g, respectively. Kinetic and equilibrium studies revealed that the adsorption process of acid blue 113 and malachite green dyes onto the CFA and CFV samples followed the pseudo-second-order model and Langmuir isotherm. Thermodynamic analysis indicated that the adsorption process was physical, spontaneous, and exothermic. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
39. Comparison of Two Surgical Approaches for Coronary Artery Bypass of Left Anterior Descending Artery.
- Author
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Salamate, Saad, Bakhtiary, Farhad, Bayram, Ali, Sirat, Sami, Doss, Mirko, Ciobanu, Veaceslav, Monsefi, Nadejda, and El-Sayed Ahmad, Ali
- Subjects
THORACOTOMY ,INTERNAL thoracic artery ,CORONARY artery bypass ,RED blood cell transfusion ,PROPENSITY score matching - Abstract
Background/Objectives: The minimally invasive approach through left mini-thoracotomy is a promising alternative to the median sternotomy for coronary artery bypass. The aim of this study was to compare the short-term outcomes of patients undergoing minimally invasive coronary artery bypass (MIDCAB) with off-pump coronary artery bypass through sternotomy (OPCAB) for single-vessel disease. Methods: From January 2017 to February 2023, 377 consecutive patients aged above 18 years undergoing off-pump bypass of the left anterior descending artery (LAD) with left internal thoracic artery underwent OPCAB. Propensity score matching was then applied. Primary endpoints were in-hospital mortality and 30-day mortality. Results: Prior to matching, 30-day mortality occurred in 2 (0.7%) patients in the MIDCAB group vs. 1 (1%) patient in the OPCAP group (p = 1). Transfusion of red blood cells (RBC) was required in 9.4% and 29% of patients within the MIDCAB and the OPCAB groups, respectively (p < 0.001). Median intensive care stay (ICU) was 1 [1–2] day in the MIDCAB group, vs. 2 [1–3] in the OPCAB (p < 0.001). In the matched cohort, 10% of MIDCAB patients received RBCs vs. 27.5% of OPCAB patients (p = 0.006). Median ICU stay was significantly lower in the MIDCAB group, 1 [1–2] vs. 2 [1–3] days. Conclusions: MIDCAB is as safe and effective as OPCAB for single coronary artery bypass of the LAD with the LITA in select patients. It is associated with a decreased ICU stay and lower transfusion rates when compared with OPCAB. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
40. Improving Water Use Efficiency, Yield, and Fruit Quality of Crimson Seedless Grapevines under Drought Stress.
- Author
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El-Sayed, Mohamed E. A., Hammam, Amr A., Fayed, Ahmed S. K., Rebouh, Nazih Y., and Eldin, Rasha M. Badr
- Subjects
WATER efficiency ,SOIL amendments ,GRAPE yields ,FRUIT quality ,VITIS vinifera ,GRAPES ,DEFICIT irrigation ,BERRIES ,TABLE grapes - Abstract
Drought stress is a group of abiotic stresses that affects plant growth and yield production. A field experiment over two successive seasons (2021–2022 and 2022–2023) in sand soil was conducted to investigate the integration effect of deficit irrigation, soil amendment "hundzsoil", and the spraying of proline on the water use efficiency (WUE), yield, and fruit quality of 8-year-old Crimson seedless table grapes. Four application rates of soil amendment (0, 2, 4, and 6 kg hundzsoil /vine) were added during the dormancy period, and four irrigation levels at 125, 100, 75, and 60% of the field capacity were applied just before flowering until harvest. Proline at two levels (0 and 500 ppm) was applied as a foliar spray. Parameters such as bud fertility, weight of 100 berries, juice volume, and cluster number were positively affected by irrigation at 75% FC along with applying hundzsoil at 2 and 4 kg/vine under proline spray in both seasons. Irrigation at the 125% FC level with a 6 kg hundzsoil application under proline spray resulted in the highest yield, berries number, cluster length, cluster weight, and total anthocyanin in both seasons. The TSS/acidity ratio was significantly and positively affected by deficit irrigation (60% FC level) under hundzsoil at a rate of 4 kg alongside proline spray. Reducing irrigation to 60% FC without hundzsoil and proline spray negatively affected numerous growth parameters and the yield. However, irrigation at 60% FC alongside 6 kg of hundzsoil and proline showed the highest IWUE in both seasons. Proline spray was a key factor in conserving water used for irrigation. This study recommends using deficit irrigation alongside hundzsoil application under proline spray as an adequate strategy for water use efficiency and improving the yield and fruit quality of Crimson seedless grapevines cultivated in sand soil. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
41. Tailoring 3D Star-Shaped Auxetic Structures for Enhanced Mechanical Performance.
- Author
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Wang, Yulong, Alsaleh, Naser A., Djuansjah, Joy, Hassanin, Hany, El-Sayed, Mahmoud Ahmed, and Essa, Khamis
- Subjects
AUXETIC materials ,POISSON'S ratio ,HONEYCOMB structures ,FINITE element method ,ELASTIC modulus - Abstract
Auxetic lattice structures are three-dimensionally designed intricately repeating units with multifunctionality in three-dimensional space, especially with the emergence of additive manufacturing (AM) technologies. In aerospace applications, these structures have potential for use in high-performance lightweight components, contributing to enhanced efficiency. This paper investigates the design, numerical simulation, manufacturing, and testing of three-dimensional (3D) star-shaped lattice structures with tailored mechanical properties. Finite element analysis (FEA) was employed to examine the effect of a lattice unit's vertex angle and strut diameter on the lattice structure's Poisson's ratio and effective elastic modulus. The strut diameter was altered from 0.2 to 1 mm, while the star-shaped vertex angle was adjusted from 15 to 90 degrees. Laser powder bed fusion (LPBF), an AM technique, was employed to experimentally fabricate 3D star-shaped honeycomb structures made of Ti
6 Al4 V alloy, which were then subjected to compression testing to verify the modelling results. The effective elastic modulus was shown to decrease when increasing the vertex angle or decreasing the strut diameter, while the Poisson's ratio had a complex behaviour depending on the geometrical characteristics of the structure. By tailoring the unit vertex angle and strut diameter, the printed structures exhibited negative, zero, and positive Poisson's ratios, making them applicable across a wide range of aerospace components such as impact absorption systems, aircraft wings, fuselage sections, landing gear, and engine mounts. This optimization will support the growing demand for lightweight structures across the aerospace sector. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
42. Effects of a Phytogenic Feed Additive on Redox Status, Blood Haematology, and Piglet Mortality in Primiparous Sows.
- Author
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Papatsiros, Vasileios G., Papakonstantinou, Georgios I., Katsogiannou, Eleni, Gougoulis, Dimitrios A., Voulgarakis, Nikolaos, Petrotos, Konstantinos, Braimaki, Sofia, Galamatis, Dimitrios A., El-Sayed, Amr, and Athanasiou, Labrini V.
- Subjects
FEED additives ,PIGLETS ,SOWS ,PLANT extracts ,HEMATOLOGY ,FIBRINOLYTIC agents - Abstract
This study aimed to investigate the effects of a polyphenolic phytogenic feed additive (PFA) based on plant extracts, such as Embelia officinalis, Ocimum sanctum and nut fibre, on the redox status, haematological parameters, and piglet mortality in sows. A total of 64 primiparous sows were divided into two groups: T1-control group: regular gestation (GF) and lactation feed (LF), T2 group: regular GF and LF supplemented with a PFA (10 g daily) for 14 days before and 7 days after the farrowing. Blood samples were collected 0–3 h after farrowing. Haematological parameters (Packed Cell Volume/PCV, White Blood Cells/WBC, Platelets/PLTs) were counted in blood smears. Thiobarbituric acid reactive substances (TBARS) and protein carbonyls (CARBS) levels were determined in sow plasma. The performance and reproductive parameters of sows at farrowing and weaning days were recorded. The mean numbers of PCV and PLT counts in the T2 group were higher in comparison to the T1 group (p = 0.041, p = 0.033, respectively). In contrast, the mean numbers of WBC and neutrophils were almost significantly higher in the T2 group (p = 0.051). The mean number of stillborn piglets was significantly higher in the T1 group (2.12) compared to the T2 group (1.03). The mean number of alive piglets 24 h after farrowing and the mean number of the weaned piglets were significantly higher in group T2 (13.9 vs. 15.4 and 12.6 vs. 14.3). Sows in group T2 had significantly more backfat at weaning than the sows in group T1 (13.3 vs. 12.7). The mean levels of CARBS (nmol/mL) and TBARS (μmol/L) in group T1 (24.8 and 18.7) were significantly higher in comparison to group T2 (18.3 and 14.9). In conclusion, the use of a polyphenolic PFA in sows has beneficial effects on their welfare and performance due to its antioxidative effects. Furthermore, PFAs appear to exert antithrombotic, anti-inflammatory, and protective effects on PLTs, WBCs, and RBCs, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
43. Performance of RC Beams under Shear Loads Strengthened with Metallic and Non-Metallic Fibers.
- Author
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Ghali, Mona K. N., El-Sayed, Taha A., Salah, Ahmed, and Khater, Nora
- Subjects
CONCRETE beams ,GLASS fibers ,REINFORCED concrete ,SHEAR reinforcements ,FIBERS ,WIRE netting - Abstract
In our investigation, we subjected eleven reinforced concrete beams to a four-point bending system to explore the impact of varying fibre and ferrocement contents on their structural behaviour. These beams, measuring 1.7 m in length, featured a rectangular cross-section with dimensions of 150 mm by 300 mm. Our study focused on three key variables: steel fibre content (at levels of 0.5%, 1%, and 1.5%), glass fibre content (also at 0.5%, 1%, and 1.5%), and ferrocement content (evaluated with one or two layers of welded or expanded wire mesh). Our findings revealed that incorporating fibres with minimal shear reinforcement significantly enhanced the beams' performance. Specifically: The specimen reinforced with 1.5% steel fibres exhibited the highest ultimate failure load, surpassing the control beam by an impressive 41.87%. The 0.5% glass fibre specimen experienced the least deflection at the ultimate load compared to the control beam. The 1.5% glass fibre specimen demonstrated superior energy absorption compared to the control specimen. Notably, using two layers of welded wire mesh proved most effective in enhancing the ultimate failure load when compared to both the control specimen and other ferrocement-strengthened beams. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
44. Digital Dilemma of Cyberbullying Victimization among High School Students: Prevalence, Risk Factors, and Associations with Stress and Mental Well-Being.
- Author
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Ramadan, Osama Mohamed Elsayed, Alruwaili, Majed Mowanes, Alruwaili, Abeer Nuwayfi, Elsharkawy, Nadia Bassuoni, Abdelaziz, Enas Mahrous, El Badawy Ezzat, Reda El Sayed, and El-Nasr, Eman Mahmoud Seif
- Subjects
RISK assessment ,CROSS-sectional method ,CYBERBULLYING ,T-test (Statistics) ,MENTAL health ,PSYCHOLOGY of high school students ,QUESTIONNAIRES ,MULTIPLE regression analysis ,DESCRIPTIVE statistics ,DISEASE prevalence ,INTERNET ,CRIME victims ,PSYCHOLOGICAL stress ,FACTOR analysis ,DATA analysis software ,WELL-being - Abstract
Cyberbullying has emerged as a pervasive problem among high school students, with potentially severe consequences for their mental well-being. This study aimed to investigate the prevalence, risk factors, and associations of cyberbullying with stress and mental well-being among high school students in Zagazig, Egypt. A cross-sectional study was conducted among 562 high school students using a random sampling technique. The data were collected using a self-administered questionnaire that included the Cyberbullying Scale, Perceived Stress Scale (PSS-10), and General Health Questionnaire (GHQ-12). Descriptive statistics, independent samples t-tests, multiple regression, mediation, and logistic regression analyses were employed for data analysis. The prevalence of cyberbullying victimization was 38.3%, with 20.6% exposed to two or three cyberbullying behaviors and 4.1% exposed to four or more. Female students, those under 18 years old, those with lower educational achievement, and those with higher daily internet use were more likely to experience cyberbullying. Cyberbullied students reported significantly higher levels of perceived stress and poorer mental well-being compared to non-cyberbullied students. Perceived stress likely mediated the relationship between cyberbullying victimization and general psychological health. Cyberbullying is a significant problem among high school students in Zagazig, Egypt, with detrimental effects on their stress levels and mental well-being. Targeted interventions and prevention strategies are needed to address cyberbullying and promote the well-being of adolescents in the digital age. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
45. Nano-Magnetic Sugarcane Bagasse Cellulosic Composite as a Sustainable Photocatalyst for Textile Industrial Effluent Remediation.
- Author
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Tony, Maha A., El-Gendy, Nour Sh., Hussien, Mohamed, Ahmed, Abdullah A. S., Xin, Jiayu, Lu, Xingmei, and El-Sayed, Ibrahim El Tantawy
- Subjects
INDUSTRIAL wastes ,BAGASSE ,INDUSTRIAL textiles ,SUGARCANE ,RESPONSE surfaces (Statistics) ,HYDROGEN peroxide - Abstract
Researchers have focused on deriving environmentally benign materials from biomass waste and converting them into value-added materials. In this study, cellulosic crystals derived from sugarcane bagasse (SCB) are augmented with magnetite (M) nanoparticles. Following the co-precipitation route, the composite was prepared, and then the mixture was subjected to a green microwave solvent-less technique. Various mass ratios of SCB:M (1:1, 2:1, 3:1, 5:1, and 1:2) were prepared and efficiently utilized as photocatalysts. To look at the structural and morphological properties of the prepared samples, X-ray diffraction pattern (XRD), scanning electron microscopy (SEM), and elemental analysis were used to describe the composite fibers. SCB:M augmented with H
2 O2 as a Fenton reaction was used to eliminate Reactive blue 19 (RB19) from polluted water and was compared with pristine SCB and M. Additionally, the response surface methodology (RSM) statistically located and assessed the optimized parameters. The optimal operating conditions were recorded at pH 2.0 and 3:1 SCB: M with 40 mg/L and 100 mg/L of hydrogen peroxide. However, the temperature increase inhibits the oxidation reaction. The kinetic modeling fit showed the reaction following the second-order kinetic model with an energy barrier of 98.66 kJ/mol. The results show that such photocatalyst behavior is a promising candidate for treating textile effluent in practical applications. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
46. Egyptian Citrus Essential Oils Recovered from Lemon, Orange, and Mandarin Peels: Phytochemical and Biological Value.
- Author
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Ibrahim, Faten Mohamed, Mohammed, Reda Sayed, Abdelsalam, Eman, Ashour, Wedian El-Sayed, Magalhães, Daniela, Pintado, Manuela, and El Habbasha, El Sayed
- Subjects
ESSENTIAL oils ,CITRUS ,LEMON ,ORANGES ,CIRCULAR economy ,FRUIT skins ,CYCLOOXYGENASE 2 inhibitors ,FOOD preservation ,CITRUS fruit industry - Abstract
Citrus peels are an important by-product of citrus processing industries, but a large part is considered waste. There has been increased attention in the last five years on these industrial by-products, especially those containing residual essential oils (EOs). Lemon, orange, and mandarin peels from Egypt were subjected to hydro-distillation to obtain EOs, which were analyzed via mass spectrometry (GC/MS) and by building Global Natural Products Social Molecular Networking (GNPS-MN) for the purpose of visually exploring the volatile components of citrus species. The constructed MN revealed that D-Limonene, α-pinene, and β-pinene are the dominant volatile constituents in the three Egyptian citrus species. The EOs from three citrus peels exhibited promising activities as antioxidants using two tested methods: 1,1-diphenyl-2-picryl-hydrazil (DPPH) and nitric oxide (NO) compared with vitamin C. Lemon EO proved excellent antimicrobial activity against Gram-positive and negative bacteria. Additionally, the three citrus EOs showed good activities against the yeast Candida albicans. Regarding the anti-inflammatory assay, the three citrus EOs showed promising activities as COX-1 and COX-2 inhibitors. This study concludes that EOs extracted from citrus peel waste can be valorized as an innovative strategy for food preservation or may be incorporated in cosmetics and pharmaceutical formulations in alignment with circular economy principles. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
47. Vagal Stimulation Ameliorates Non-Alcoholic Fatty Liver Disease in Rats.
- Author
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Elkattawy, Hany A., Mahmoud, Samar Mortada, Hassan, Ahmed El-Sayed, Behiry, Ahmed, Ebrahim, Hasnaa Ali, Ibrahim, Ateya Megahed, Zaghamir, Donia Elsaid Fathi, El-Sherbiny, Mohamed, and El-Sayed, Sherein F.
- Subjects
FATTY liver ,NON-alcoholic fatty liver disease ,RAT diseases ,TRANSCUTANEOUS electrical nerve stimulation ,VAGUS nerve stimulation ,INFLAMMATION - Abstract
Background: The harmful consequences of non-alcoholic fatty liver disease (NAFLD) are posing an increasing threat to public health as the incidence of diabetes and obesity increases globally. A non-invasive treatment with a range of autonomic and metabolic benefits is transcutaneous vagus nerve stimulation (tVNS). Aim of the study: To investigate the possible preventive impacts of VNS against adult rats' NAFLD caused by a high-fat diet (HFD) and to clarify the underlying mechanisms. Methods: A total of thirty-two adult male rats were split into two groups: the HFD-induced NAFLD group (n = 24) and the control normal group (n = 8). The obesogenic diet was maintained for 12 weeks to induce hepatic steatosis. The HFD-induced NAFLD group (n = 24) was separated into three groups: the group without treatment (n = 8), the group with sham stimulation (n = 8), and the group with VNS treatment (n = 8). VNS was delivered for 30 min per day for 6 weeks after the establishment of NAFLD using a digital TENS device. The subsequent assessments included hepatic triglyceride, cholesterol content, serum lipid profile, and liver function testing. In this context, inflammatory biomarkers (TNF-α, IL-6) and hepatic oxidative stress (MDA, SOD, and GPx) were also assessed. To clarify the possible mechanisms behind the protective benefits of VNS, additional histological inspection and immunohistochemistry analysis of TNF-α and Caspase-3 were performed. Results: In the NAFLD-affected obese rats, VNS markedly decreased the rats' body mass index (BMI) and abdominal circumference (AC). Liver function markers (albumin, ALT, and AST) and the serum lipid profile—which included a notable decrease in the amounts of hepatic triglycerides and cholesterol—were both markedly improved. Additionally, oxidative stress and inflammatory indicators showed a considerable decline with VNS. Notably, the liver tissues examined by histopathologists revealed that there is evidence of the protective impact of VNS on the oxidative and inflammatory states linked to HFD-induced NAFLD while maintaining the architectural and functional condition of the liver. Conclusions: Our findings suggest that VNS may represent a promising therapeutic candidate for managing NAFLD induced by obesity. It can be considered to be an effective adjuvant physiological intervention for the obese population with NAFLD to spare the liver against obesity-induced deleterious injury. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
48. Steel Slag and Limestone as a Rock Filter for Eliminating Phosphorus from Domestic Wastewater: A Pilot Study in a Warm Climate
- Author
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Maarup, Syahrul Nizam, Hamdan, Rafidah, Othman, Norzila, Adel Al-Gheethi, Adel Al-Gheethi, Sadeq Alkhadher, Sadeq Alkhadher, M. M. Abd El-Hady, M. M. Abd El-Hady, S. El-Sayed Saeed, S. El-Sayed Saeed, Maarup, Syahrul Nizam, Hamdan, Rafidah, Othman, Norzila, Adel Al-Gheethi, Adel Al-Gheethi, Sadeq Alkhadher, Sadeq Alkhadher, M. M. Abd El-Hady, M. M. Abd El-Hady, and S. El-Sayed Saeed, S. El-Sayed Saeed
- Abstract
Phosphorus input with excessive use of fertilizers and manure as one of the main sources of nutrient pollution has increased recently in the wastewater as result of intensive farming and industrialized and densely populated areas. The novelty of the current work lies in improving a Vertical Aerated Rock Filter (VARF) using steel slag and limestone media to enhance the efficiency of a rock filter (RF) to eliminate total phosphorus (TP) from domestic wastewater. RF was designed with steel slag and limestone (calcium hydroxide) as a pilot scale called vertical aerated steel slag filter (VASSF) and optimized based on hydraulic loading rates (HLR) (0.16 to 5.44 m3/m3 day) and airflow rates ranging from 3 to 10 L/min. The highest removal for the design of the laboratory scale steel slag filter (LSSSF) was achieved by approximately 58%, while for the laboratory-scale limestone filter (LSLSF), it was 64%. The VASSF achieved a removal percentage at 30% of TP, biological oxygen demand (BOD; 89%), chemical oxygen demand (COD; 75%), total suspended solids (TSS; 73%), and total coliforms (TC; 96%), recorded with 7 L/min of an airflow rate and 1.04 m3/m3 day of hydraulic loading rate (HLR) at potential of hydrogen (pH) 7.3 and 5.09 mg/L of dissolved oxygen (DO). These findings indicated that the steel slag is higher than limestone in TP removal, because of ion exchange between phosphorus hydrolysis and the adsorption process. Moreover, in the pilot study, the removal efficiency needs more investigation to determine the best conditions for TP considering the temperature, which is unstable, and presence of other pollutants, which might negatively affect the removal efficiency under unstable conditions.
- Published
- 2023
49. Analysis of Grid Performance with Diversified Distributed Resources and Storage Integration: A Bilevel Approach with Network-Oriented PSO.
- Author
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El Sayed, Ahmad and Poyrazoglu, Gokturk
- Subjects
- *
BILEVEL programming , *STORAGE - Abstract
The growing deployment of distributed resources significantly affects the distribution grid performance in most countries. The optimal sizing and placement of these resources have become increasingly crucial to mitigating grid issues and reducing costs. Particle Swarm Optimization (PSO) is widely used to address such problems but faces computational inefficiency due to its numerical convergence behavior. This limits its effectiveness, especially for power system problems, because the numerical distance between two nodes in power systems might be different from the actual electrical distance. In this paper, a scalable bilevel optimization problem with two novel algorithms enhances PSO's computational efficiency. While the resistivity-driven algorithm strategically targets low-resistivity regions and guides PSO toward areas with lower losses, the connectivity-driven algorithm aligns solution spaces with the grid's physical topology. It prioritizes actual physical neighbors during the search to prevent local optima traps. The tests of the algorithms on the IEEE 33-bus and the 69-bus and Norwegian networks show significant reductions in power losses (up to 74% for PV, wind, and storage) and improved voltage stability (a 21% reduction in mean voltage deviation index) with respect to the results of classical PSO. The proposed network-oriented PSO outperforms classical PSO by achieving a 2.84% reduction in the average fitness value for the IEEE 69-bus case with PV, wind, and storage deployment. The Norwegian case study affirms the effectiveness of the proposed approach in real-world applications through significant improvements in loss reduction and voltage stability. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
50. Insights into Grain Milling and Fractionation Practices for Improved Food Sustainability with Emphasis on Wheat and Peas.
- Author
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Abdel-Aal, El-Sayed M.
- Subjects
GRAIN milling ,FLOUR mills ,ANIMAL feeds ,PEAS ,SUSTAINABILITY ,DIETARY fiber ,GRAIN ,WHEAT - Abstract
Cereal grains and pulses are staple foods worldwide, being the primary supply of energy, protein, and fiber in human diets. The current practice of milling and fractionation yields large quantities of byproducts and waste, which are largely downgraded and end up as animal feeds or fertilizers. This adversely affects food security and the environment, and definitely implies an urgent need for a sustainable grain processing system to rectify the current issues, particularly the management of waste and excessive use of water and energy. The current review intends to discuss the limitations and flaws of the existing practice of grain milling and fractionation, along with potential solutions to make it more sustainable, with an emphasis on wheat and peas as common fractionation crops. This review discusses a proposed sustainable grain processing system for the fractionation of wheat or peas into flour, protein, starch, and value-added components. The proposed system is a hybrid model that combines dry and wet fractionation processes in conjunction with the implementation of three principles, namely, integration, recycling, and upcycling, to improve component separation efficiency and value addition and minimize grain milling waste. The three principles are critical in making grain processing more efficient in terms of the management of waste and resources. Overall, this review provides potential solutions for how to make the grain processing system more sustainable. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
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