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Evaluation of On-Line MPPT Algorithms for PV-Based Battery Storage Systems

Computers, Materials & Continua 2022年第11期73卷 3595-3611页

作者： Belqasem Aljafari Eydhah Almatrafi Sudhakar Babu Thanikanti sara A.ibrahim Mohamed A.Enany Marwa M.Ahmed Electrical Engineering Department College of EngineeringNajran UniversityNajran11001Saudi Arabia Mechanical Engineering Department College of Engineering-RabighKing Abdulaziz UniversityJeddahSaudi Arabia K.A.CARE Energy Research and Innovation Center King Abdulaziz UniversityJeddah21589Saudi Arabia Center of Excellence in Desalination Technology King Abdulaziz UniversityJeddahSaudi Arabia Department of Electrical and Electronics Engineering Chaitanya Bharathi Institute of TechnologyHyderabad500075India Electrical Power and Machines Department Faculty of EngineeringZagazig UniversityZagazig44519Egypt Electrical Engineering Department Faculty of EngineeringKing Abdul-Aziz UniversityJeddah80204Saudi Arabia

This paper presents a novel Simulink models with an evaluation study of more widely used On-Line Maximum Power Point tracking(MPPT)techniques for Photo-Voltaic based Battery Storage Systems(PV-BSS).To have a full comparative study in terms of the dynamic response,battery state of charge(SOC),and oscillations around the Maximum Power Point(MPP)of the PV-BSS to variations in climate conditions,these techniques are simulated in Matlab/*** introduced methodologies are classified into two types;the first type is conventional hill-climbing techniques which are based on instantaneous PV data measurements such as Perturb&Observe and Incremental Conductance *** second type is a novel proposed methodology is based on using solar irradiance and cell temperature measurements with pre-build Adaptive Neuro-Fuzzy Inference System(ANFIS)model to predict DC–DC converter optimum duty cycle to track *** evaluation study is introduced for conventional and proposed On-Line MPPT *** comparative study can be useful in specifying the appropriateness of the MPPT techniques for *** the introduced model can be used as a valued reference model for future research related to Soft Computing(SC)MPPT techniques.A significant improvement of SOC is achieved by the proposed model and methodology with high accuracy and lower oscillations.

关键词： Photo-voltaic based battery storage systems adaptive neuro-fuzzy inference system maximum power point tracking perturb&observe technique incremental conductance technique state of charge

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Sodium-glucose co-transporter 2 inhibitors induced euglycemic diabetic ketoacidosis within four days of initiation

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World Journal of Diabetes 2022年第3期13卷 272-274页

作者： Almurtada Razok Fateen Ata sara Mohamed ibrahim Ahmed Dabia Hamad S H Al Mohanadi Department of Internal Medicine Hamad Medical CorporationDoha 3050Qatar Department of Endocrinology Hamad Medical CorporationDoha 3050Qatar

Euglycemic diabetic ketoacidosis(EDKA)is a well-known complication of sodium-glucose co-transporter 2 inhibitors,and many cases with variable onset following the initiation of these agents are reported before,with a median onset of approximately 2 *** letter discusses a 45-year-old lady who initially presented with ischemic stroke but developed EDKA 4 d after starting empagliflozin,a rare *** patient had severe metabolic acidosis that necessitated admission into the intensive care *** discontinuation of empagliflozin and DKA management resulted in clinical recovery.

关键词： Euglycemic diabetic ketoacidosis Sodium-glucose co-transporter 2 inhibitors Type 2 diabetes mellitus Empagliflozin

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Nurses’ Knowledge, Attitude and Practice of Oral Care for Intensive Care Unit Patients

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Open Journal of Stomatology 2015年第7期5卷 179-186页

作者： sara Mohamed ibrahim Amal Mohamed Mudawi Osama Omer Department of Dental Public Health Faculty of Dentistry Al-Neelain University Khartoum Sudan Department of Prevention and Community Dentistry Faculty of Dentistry University of Khartoum Khartoum Sudan Department of Restorative Dentistry Dublin Dental University Hospital University of Dublin Dublin Ireland

The aim of this study was to describe the intensive care unit (ICU) nurses’ knowledge, attitude, and practice of mouth care for their patients. This is a cross sectional hospital based study. A total of 154 ICU nurses were randomly selected from seven governmental hospitals in Khartoum state and were invited to take part in this study. 97.4% of ICU nurses had high knowledge of the importance of mouth care for ICU patients and similarly for the priority of mouth care. However, only 20% of nurses were found to apply good practice. 64.5% of the nurses received training in mouth care provision, and (81%) indicated that further training would be beneficial. The oral care practice of ICU nurses ranged between average among 57% and poor among 23%. The study highlighted the need for setting of ICU protocols and adoption of advanced training for ICU nurses.

关键词： Oral Health Intensive Care Unit Nurses’ Knowledge

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Thermal, Morphological and Cytotoxicity Characterization of Hardwood Lignins Isolated by <i>In-Situ</i>Sodium Hydroxide-Sodium Bisulfate Method

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Natural Resources 2020年第10期11卷 427-438页

作者： Ahmed Geies Mohamed Abdelazim Ahmed Mahmoud Sayed sara ibrahim Chemistry Department Faculty of science Assiut University Assiut Egypt Chemical and Biotechnological Laboratories Sugar Industry Technology Research Institute Assiut University Assiut Egypt

In the present work, lignin is isolated from three different agro-industrial waste, sweet sorghum, rice straw and sugarcane bagasse using in-situ sodium hydroxide-sodium bisulfate methodology. Characterization was performed using fourier transform infrared analysis (FTIR), scan electron microscopy (SEM), thermo gravimetric analysis (TGA). The SEM micrographs showed sponge-like structure except for sugarcane bagasse lignin reveals rock-like structure. The FTIR indicates the presence of hydroxyl, carbonyl and methoxyl groups in the lignin structure. TGA thermograms were relatively same and sugarcane bagasse lignin was found the most thermally stable up to 201˚C as compared to both of soda and kraft sugarcane bagasse lignin and its maximal temperature degradation rate DTGmax was found at 494˚C while 450˚C, 464˚C in addition to thermal stabilities up to 173˚C and 180˚C for sweet sorghum and rice straw lignins respectively. All lignins exhibited low percentage of bio-char less than 10% remained unvalotilized at the end of the thermogravimetric analysis at 800˚C in nitrogen atmosphere, revealing

关键词： Lignocellulose Lignin Sweet Sorghum Rice Straw Sugarcane Bagasse FTIR SEM TGA Cytotoxicity

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In silico identification of antiviral compounds for the treatment of chikungunya virus infection:qsar modelling and md simulation analysis

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Medicine in Novel Technology and Devices 2024年第2期22卷 102-114页

作者： Hayder M Abdulhamza Muthanna S.Farhan sara.S Hassan Hany Aqeel Al-Hussainy Amjad ibrahim Oriabi Department of Pharmacy Kut University CollegeAlkutWasit52001Iraq Department of Pharmaceutical Chemistry College of PharmacyUniversity of BaghdadBaghdadIraq Al-Manara College for Medical Sciences Department of PharmacyIraq Department of Pharmacy Hilla University CollegeBabylonIraq Dr Hany Akeel Institute Iraqi Medical Research CenterBaghdad10001Iraq

Chikungunya virus(CHIKV),transmitted by arthropods,has gained global recognition for its impact on public *** has expanded globally,including Africa,Asia,and the Indian subcontinent,and has a helicase protein in its genome that is crucial for its ***,the study targeted the helicase protein of CHIKV with 745 antiviral compounds using an ML-based QSAR model and molecular *** binders(5279172,78161839,6474310,and 5330286)were selected for MD simulation based on the control(Silvestrol).All compounds had the highest binding scores,with 78161839 showing the most consistent RMSD and the least conformational variation,indicating high *** also showed the lowest binding free energy(ΔG¼31.31 kcal/mol),indicating energetically favourable *** and FEL also depicted the stable complex confirmation of the protein and 78161839 complex during the 100 ns ***,this study aimed to identify helicase function antiviral binders that could be experimentally tested for treating CHIKV.

关键词： Chikungunya virus Machine learning based QSAR Molecular dynamic solution Helicase

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Novel Thiazolopyrane and Thiazolopyranopyrimidine Derivatives Carrying a Sulfonamide Moiety of Expected Cytotoxic and Radiosensitizing Activities

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材料科学与工程（中英文B版） 2011年第6期1卷 747-758页

作者： Mostafa M. Ghorab Mohamed A. Shaaban Hanan M. Refaat Helmy I. Heiba sara S. ibrahim Department of Drug Radiation Research National Center for Radiation Research and Technology Nasr City Egypt Medicinal Aromatic and Poisonous Plants Research Center （MAPPRC） College of Pharmacy King Saud University Riyadh 11451 Saudi Arabia Department of Organic Chemistry Faculty of Pharmacy Cairo University Cairo Egypt

New series of thiazolopyranes 4, 5, 7-10, 14, 18-20 and thiazolopyranopyrimidine derivatives 6, 11, 12, 13, 15-17 bearing a sulfonamide moiety were synthesized. The structures design of these compounds complies with general pharmacophore of the sulfonamide compounds that act as carbonic anhydrase (CA) inhibitor this play a role in their anticancer activity. The structure of the newly synthesized compounds was established by microanalysis IR, H1NMR and mass spectral data. All new synthesized compounds showed considerable cytotoxic activity against breast carcinoma cell line [MCF7] compared with doxorubicin as positive control. This compounds act as radiosensitizer upon combination with γ-radiation.

关键词：放射增敏剂衍生物药物成分细胞毒性磺胺类化合物结构小说 MCF7细胞

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Hepatitis C virus and neurological damage

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World Journal of Hepatology 2016年第12期8卷 545-556页

作者： shilu mathew muhammed faheem sara m ibrahim waqas iqbal bisma rauff kaneez fatima ishtiaq qadri center of excellence in genomic medicine research king abdulaziz universityjeddah 21589saudi arabia department of biosciences faculty of sciencescomsats institute of information technologyIslamabad 45550Pakistan department of biochemistry king abdulaziz universityjeddah 21589saudi arabia westmead millennium institute for medical research university of sydneySydneyNSW 2006Australia iq institute of infection and immunity Lahore 54000Pakistan king fahd medical research center king abdulaziz university Jeddah 21589 Saudi Arabia

Chronic hepatitis C virus(HCV) infection exhibits a wide range of extrahepatic complications, affecting various organs in the human body. Numerous HCV patients suffer neurological manifestations, ranging from cognitive impairment to peripheral neuropathy. Overexpression of the host immune response leads to the production of immune complexes, cryoglobulins, as well as autoantibodies, which is a major pathogenic mechanism responsible for nervous system dysfunction. Alternatively circulating inflammatory cytokines and chemokines and HCV replication in neurons is another factor that severely affects the nervous system. Furthermore, HCV infection causes both sensory and motor peripheral neuropathy in the mixed cryoglobulinemia as well as known as an important risk aspect for stroke. These extrahepatic manifestations are the reason behind underlying hepatic encephalopathy and chronic liver disease. The brain is an apt location for HCV replication, where the HCV virus may directly wield neurotoxicity. Other mechanisms that takes place by chronic HCV infection due the pathogenesis of neuropsychiatric disorders includes derangement of metabolic pathways of infected cells, autoimmune disorders, systemic or cerebral inflammation and alterations in neurotransmitter circuits. HCV and its pathogenic role is suggested by enhancement of psychiatric and neurological symptoms in patients attaining a sustained virologic response followed by treatment with interferon; however, further studies are required to fully assess the impact of HCV infection and its specific antiviral targets associated with neuropsychiatric disorders.

关键词： Hepatitis C virus Neuro disorders Blood brain barrier Nervous system Inflammation

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Geospatial susceptibility mapping of earthquake-induced landslides in Nuweiba area, Gulf of Aqaba, Egypt

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Journal of Mountain Science 2016年第7期13卷 1286-1303页

作者： sara ABUZIED Samia ibrahim Mona KAISER Tarek Saleem Center for Spatial Analysis University of Oklahoma Geology Departments Faculty of Science Suez Canal University

Earthquake induced landslides are one of the most severe geo-environmental hazards that cause enormous damage to infrastructure, property, and loss of life in Nuweiba area. This study developed a model for mapping the earthquake-induced landslide susceptibility in Nuweiba area in Egypt with considerations of geological, geomorphological, topographical, and seismological factors. An integrated approach of remote sensing and GIS technologies were applied for that target. Several data sources including Terra SAR-X and SPOT 5 satellite imagery, topographic maps, field data, and other geospatial resources were used to model landslide susceptibility. These data were used specifically to produce important thematic layers contributing to landslide occurrences in the region. A rating scheme was developed to assign ranks for the thematic layers and weights for their classes based on their contribution in landslide susceptibility. The ranks and weights were defined based on the knowledge from field survey and authors experiences related to the study area. The landslide susceptibility map delineates the hazard zones to three relative classes of susceptibility: high, moderate, and low. Therefore, the current approach provides a way to assess landslide hazards and serves for geo-hazard planning and prediction in Nuweiba area.

关键词： Geographic Information Systems(GIS) Remote Sensing(RS) Landslides Susceptibility mapping Weights Nuweiba area

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Portraying Diabetic Foot Ulcers: Comparative Evaluation of Diabetic Foot Infections versus Diabetic Foot Ulcers

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Advances in Infectious Diseases 2024年第2期14卷 297-309页

作者： Jamal Wadi Al Ramahi Leen Sharqawi sarah AL-Najafi Eman Awwad Haya M. Al-Obaidi Abdel Hafez Mohammad sara Nofal Dina Riyadh Al-Janabi ibrahim Zuhair Hamza Jamal Al-Masaeid Mohammed Al-Ithawi Dina Rasheed Bellal O. Al-Far Osama Al-Izi Qutaiba Al-Bustanji School of Medicine The University of Jordan Amman Jordan Department of the Internal Medicine The Specialty Hospital Amman Jordan Department of Pharmacy The Specialty Hospital Amman Jordan Department of the Medical Al Khalidi Hospital Amman Jordan Department of Pharmacy Jordan Hospital Amman Jordan Department of Internal Medicine Jordan Hospital Amman Jordan Department of General Surgery Jordan Hospital Amman Jordan

Background: Confusion often arises in caring for diabetic foot infections and ulcers, especially with antimicrobials;we aim to shed light on this entity and alert healthcare workers to its stewardship. Methods: Records were reviewed between February 2016 and September 2023. Data for patients diagnosed with diabetes and foot ulcers, infected or not, were examined following ICD 9 search terms. Records for patients were included if they were prediabetic/diabetic adults with foot ulcers, more than 18 years old, and on antidiabetic treatment. Patients were excluded if they insulin resistant, with normal HgbA1c levels, wheel-chair dependent, bed-bound, non-diabetic patients, diabetic patients who had vascular lower limb surgery earlier to ulcers, diabetic patients who had aortocoronary bypass, deep venous thrombosis within six months, malignancy, and severe clinical depression. A modified IWGDF/IDSA guidelines definitions for DFI and DFU was considered. Statistical analysis was done using R programming. Statistical methods were employed as appropriate, and a significant P-value was considered for P Results: Most characteristics were well balanced between DFI and DFU, on imaging osteomyelitis and tissue swelling were significantly more in DFI. Endovascular radiological procedures showed angiograms to be considerably more in DFI, while angioplasty was more in DFU, in addition to smoking. Bacteremia was uncommon, and swab cultures were mostly polymicrobial in both ulcers;no clear association with blood bacteria was detected with the polymicrobial growth, though few were concordant. Antimicrobials prescribed for both ulcers were not statistically different except for carbapenems, which were more in DFI (P Conclusion: Attention should be paid to best practices while caring for diabetic ulcers. These include swab culture interpretations, the use of antimicrobials, and plan management according to DFI or DFU to utilize either local care or combination with antimicrobials.

关键词： Diabetic Foot Ulcers Diabetic Limb Amputation Antimicrobials Stewardship Broad-Spectrum Antimicrobials in Diabetic Foot Ulcers

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Assessing Drug Use Indicators in Health Insurance Facilities, Gezira State, Sudan, 2017-2018

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Pharmacology & Pharmacy 2021年第10期12卷 237-246页

作者： sara Abdelrahman Ahmed Elnazeer ibrahim Hamedelniel Abubakr Khidir Yousif Medical Service Directorate National Health Insurance Fund Gezira Sudan Department of Pharmaceutics College of Pharmacy Omdurman Islamic University Omdurman Sudan MPH MHPE National Health Insurance Fund Gezira Sudan

Background: Inappropriate use of medicines is a global concern with serious consequences related to prescribing, dispensing, and use. WHO estimated that 50% of medicines are not used correctly on their journey from the facility to home. Objective: To assess medicines use using WHO drug core indicators regarding prescribing, patient, and facilities. Setting: Outpatients, Health centers in Wadmadani locality (Urban area) in Gezira State, Sudan. Method: A cross-sectional, prospective, analytical study was conducted in 30 health centers and 60 patients from each center were selected using a simple random sampling technique. WHO indicators form was used to collect data containing different variables. T-test at a level of confidence of 95% was used to test differences between indicators. Statistical Package for Social Science (SPSS) was used for data analysis. Results: The main prescribing indicators were 2.5 ± 0.6 for drugs per encounter, 44.1% ± 14.2%. Generic 54 ± 18.0 antibiotics, 12.0% ± 9.3% injectable, and 95.2% ± 11.5% of drugs were prescribed according to the NHIF-EML. The main patient’s indicators were, 2.9 ± 0.8 minutes for consultation time, 99.5 ± 36.8 seconds for dispensing time, and 72.5% ± 16.0% for medicines actually dispensed, 49.0% ± 18.0% for medicines adequately labeled, and 22.5% ± 7.3% of the patient

关键词： Assessing Drug Use Indicators National Health Insurance Fund Gezira Sudan

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