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Acceptance of COVID-19 vaccine and its related determinants in Nigeria:An online survey

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World Journal of Virology 2024年第4期13卷 89-110页

作者： Eyiuche D Ezigbo Seyi S Enitan Esther N Adejumo Abiodun E Durosinmi Richard Y Akele Michael O Dada Grace E Itodo Abah M Idoko Okeoghene M Edafetanure-Ibeh Edwin N Okafor adedeji.a abdulsalam Oyekan I Oyedoyin Polit U Yelpoji Ogunwola O Opeyemi Ogbuji S Nmesomachi Adesola O Oyekale Chisom B Onyeji Haemostasis and Thrombosis Unit Department of Medical Laboratory SciencesUniversity of NigeriaEnugu CampusEnuguEN 400241Nigeria Department of Medical Laboratory Science School of Public and Allied HealthBabcock UniversityIlishan-RemoOG 121109Nigeria Department of Medical Laboratory Science State HospitalIjebu-OdeOG 120221Nigeria Department of Biomedical Science School of Applied ScienceUniversity of BrightonBrightonES BN24ATUnited Kingdom Department of Microbiology Federal Teaching Hospital LokojaLokojaKO 260006Nigeria Department of Hematology and Blood Group Serology Federal College of Veterinary and Medical Laboratory TechnologyVomPL 930101Nigeria Department of Environmental and Occupational Health Texas A and M University School of Public HealthGarlandTX 75049United States Division of Chemical Pathology Department of Medical Laboratory SciencesUniversity of NigeriaEnugu CampusEnuguEN 400102Nigeria School of Molecular Bioscience Sciences College of MedicalVeterinary and Life SciencesUniversity of GlasgowGlasgowSCO G128QQUnited Kingdom Department of Medical Laboratory Science State Hospital Ijebu-OdeIjebu-OdeOG 360101Nigeria Department of Medical Laboratory Science Faculty of Health Sciences and TechnologyUniversity of JosJosPL 930103Nigeria Department of Medical Laboratory Science Bola Tinubu Health and Diagnostic CenterLagosLA 100102Nigeria Department of Pathology 68 Nigerian Army Reference HospitalYabaLA 1211001Nigeria Department of Medical Laboratory Science Ladoke Akintola University of TechnologyOgbomosoOS 2111105Nigeria

BACKGROUND Vaccine hesitancy is a major challenge in the fight against the coronavirus disease 2019(COVID-19)*** the sociodemographic factors associated with vaccine acceptance among Nigerians is crucial for improving vaccine *** To assess the acceptance rate of COVID-19 vaccine and its related determinants among *** An online cross-sectional survey(observational study)was conducted between February 2021 and May 2021,using a questionnaire hosted on *** invitation to take part in the poll was sent out to participants through social networking platforms.A logistic regression was used to determine which sociodemographic factors were associated with vaccine acceptance *** A total of 1800 persons responded to the survey,a larger proportion of whom were males(53.9%)and within the age group of 21-30 years(29.4%)and earned an average income of less than$500 per month(43.3%).Only 0.56%of participants had a high perceived risk of COVID-19 infection,while only 1.11%had a perceived risk of dying from *** perception rate of the COVID-19 vaccine among participants was 51.1%,while the acceptance rate was 63.9%.There was no significant association between the COVID-19 vaccine acceptance rate and related determinants assessed,particularly age(χ²=3.049,P=0.550),sex(χ²=0.102,P=0.749),average income(χ²=3.802,P=0.875),and religion(χ²=2.819,P=0.420).Participants with chronic conditions demonstrated a higher acceptance rate compared to the general *** Despite the positive perception observed and substantial vaccine acceptance rate among the study participants,more public health interventions are still needed to enhance vaccine acceptability in Nigeria.

关键词： Acceptance COVID-19 Determinants Hesitancy Nigerians Online survey Vaccine

Remote sensing of phytoplankton distribution in the Red Sea and Gulf of Aden

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Acta Oceanologica Sinica 2014年第9期33卷 93-99页

作者： ALKAWRI abdulsalam GAMOYO Majambo Department of Marine Biology and Fisheries Faculty of Marine Science and Environment Hodiedah University Coastal Oceans Research and Development in the Indian Ocean

Analysis of high-resolution 4 km sea surface temperature, Chlorophyll a （Chl a）, and wind datasets provides a detailed description of the spatio-temporal seasonal succession of phytoplankton biomass in the Red Sea and Gulf of Aden. Based on Moderate Resolution Imaging Spectroradiometer on-board aqua platform （MO- DIS Aqua） data andsynoptic observations in the Red Sea, Chl a varies from north to south, with the northern part appearing to be oligotrophic. This is likely due to the absence of strong mixing and low nutrient intru- sion in comparison to the southern part during winter. In the Gulf of Aden, the emergence of upwelling cell is clearly evident along the coast of Yemen, and is only distinct from the summer-autumn seasons. Most notable is the pulsating nature of the upwelling, with warm and cold events clearly distinguished with phytoplankton response to this physical forcing also evident. The phytoplankton biomass distribution varies considerably between the two regions of study. In both study areas, water temperature and prevailing winds control nutrient concentrations.

关键词： Red Sea Gulf of Aden Phytoplankton chlorophyll a SST

Unilateral Choanal Atresia in Adults: A Case Series

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International Journal of Otolaryngology and Head & Neck Surgery 2024年第3期13卷 187-193页

作者： Sultan Kadasah Abdulaziz Al Qahtani Ghalib Al-Sayed Abdullah Al Helali Saud Aldhabaan Abdullah Musleh Ali Asiry Mohammed Asiri Shahd Dlboh Adnan Al-Malki abdulsalam Alqhtani Mohammed Al-khulban Sahar Al-Otaibi Department of Surgery College of Medicine University of Bisha Bisha Saudi Arabia Department of Otolaryngology Head and Neck Surgery Armed Forces Southern Region Hospital Khamis Mushait Saudi Arabia Department of Otolaryngology Head and Neck Surgery Abha Children&#8217s Hospital Abha Saudi Arabia Department of Surgery College of Medicine King Khalid University Abha Saudi Arabia Department of Otolaryngology Head and Neck Surgery Aseer Central Hospital Abha Saudi Arabia College of Medicine King Khalid University Abha Saudi Arabia

Choanal atresia (CA) is a rare occlusion of the posterior choanae. Unilateral cases have been reported more than bilaterally, and it’s more often right-sided in those patients. According to the literature, mixed bony-membranous atresia is the most common type. There is a high incidence of craniofacial and visceral anomalies associated with congenital choanal atresia. Therefore, investigation for associated congenital anomalies is an important step before the surgery. We report 2 cases of incidental finding of unilateral choanal atresia in a 21- and 17-year-old with nasal discharge being the only complaint in the former and nasal obstruction with headache in the latter. The patients were then scheduled for day-surgery as a case of choanal atresia for transnasal, endoscopic repair and posterior septectomy. The patients were discharged home on the same day with the absence of restenosis or other complications.

关键词： Choanal Atresia Nasal Obstruction Congenital Anomaly

Hidden Hierarchy Based on Cipher-Text Attribute Encryption for IoT Data Privacy in Cloud

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Computers, Materials & Continua 2023年第7期76卷 939-956页

作者： Zaid abdulsalam Ibrahim Muhammad Ilyas Department of Electrical and Computer Engineering Altinbas UniversityIstanbulTurkey Department of Computer Engineering Altinbas UniversityIstanbulTurkey

Most research works nowadays deal with real-time Internetof Things (IoT) data. However, with exponential data volume increases,organizations need help storing such humongous amounts of IoT data incloud storage systems. Moreover, such systems create security issues whileefficiently using IoT and Cloud Computing technologies. Ciphertext-Policy Attribute-Based Encryption (CP-ABE) has the potential to make IoT datamore secure and reliable in various cloud storage services. Cloud-assisted IoTssuffer from two privacy issues: access policies (public) and super polynomialdecryption times (attributed mainly to complex access structures). We havedeveloped a CP-ABE scheme in alignment with a Hidden HierarchyCiphertext-Policy Attribute-Based Encryption (HH-CP-ABE) access structure embedded within two policies, i.e., public policy and sensitive *** this proposed scheme, information is only revealed when the user’sinformation is satisfactory to the public policy. Furthermore, the proposedscheme applies to resource-constrained devices already contracted tasks totrusted servers (especially encryption/decryption/searching). Implementingthe method and keywords search resulted in higher access policy privacy andincreased security. The new scheme introduces superior storage in comparisonto existing systems (CP-ABE, H-CP-ABE), while also decreasing storage costsin HH-CP-ABE. Furthermore, a reduction in time for key generation canalso be ***, the scheme proved secure, even in handling IoT datathreats in the Decisional Bilinear Diffie-Hellman (DBDH) case.

关键词： Bilinear Diffie-Hellman(DBDH) Internet of Things(IoT) Ciphertext-Policy Attribute-Based Encryption(CP-ABE) Hidden Hierarchy CP-ABE(HH-CP-ABE)

Obesity,metabolic health and omics:Current status and future directions

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World Journal of Diabetes 2021年第4期12卷 420-436页

作者： Magdalena Paczkowska-abdulsalam Adam Kretowski Clinical Research Centre Medical University of BialystokBialystok 15-276Poland Department of Endocrinology Diabetology and Internal MedicineMedical University of BialystokBialystok 15-276Poland

The growing obesity epidemic is becoming a major public health concern,and the associated costs represent a considerable burden on *** the most common complications of severe obesity are the development of hypertension,dyslipidemia,type 2 diabetes,cardiovascular disease,and various types of ***,some obese individuals have a favorable metabolic profile and appear to be somehow protected from the detrimental effects of excessive adipose tissue *** individuals remain normoglycemic,insulin sensitive,and hypotensive with proper blood lipid levels,despite their high body mass index and/or waist *** independent observations have led to the concept of the metabolically healthy obese(MHO) phenotype,yet no consensus has been reached to date regarding a universal definition or the main mechanism behind this *** technological advances and the use of high-throughput analysis techniques have revolutionized different areas of biomedical research.A multi-omics approach,which is used to investigate changes at different molecular levels in an organism or tissue,may provide valuable insights into the interplay between the molecules or pathways and the roles of different factors involved in the mechanisms underlying metabolic health *** aim of this review is to present the current status regarding the use of omics technologies to investigate the MHO phenotype,as well as the results of targeted analyses conducted in MHO individuals.

关键词： Metabolically healthy obesity Cardiovascular diseases Genomics Transcriptome profiling Proteomics Metabolomics

Explainable Heart Disease Prediction Using Ensemble-Quantum Machine Learning Approach

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Intelligent Automation & Soft Computing 2023年第4期36卷 761-779页

作者： Ghada abdulsalam Souham Meshoul Hadil Shaiba College of Computer and Information Sciences Princess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Information Technology College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Computer Science College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia

Nowadays,quantum machine learning is attracting great interest in a wide range ofﬁelds due to its potential superior performance and *** massive increase in computational capacity and speed of quantum computers can lead to a quantum leap in the healthcareﬁ*** disease seriously threa-tens human health since it is the leading cause of death *** machine learning methods can propose effective solutions to predict heart disease and aid in early *** this study,an ensemble machine learning model based on quantum machine learning classiﬁers is proposed to predict the risk of heart *** proposed model is a bagging ensemble learning model where a quantum support vector classiﬁer was used as a base classiﬁ***-more,in order to make the model’s outcomes more explainable,the importance of every single feature in the prediction is computed and visualized using SHapley Additive exPlanations(SHAP)*** the experimental study,other stand-alone quantum classiﬁers,namely,Quantum Support Vector Classiﬁer(QSVC),Quantum Neural Network(QNN),and Variational Quantum Classiﬁer(VQC)are applied and compared with classical machine learning classiﬁers such as Sup-port Vector Machine(SVM),and Artiﬁcial Neural Network(ANN).The experi-mental results on the Cleveland dataset reveal the superiority of QSVC compared to the others,which explains its use in the proposed bagging *** Bagging-QSVC model outperforms all aforementioned classiﬁers with an accuracy of 90.16%while showing great competitiveness compared to some state-of-the-art models using the same *** results of the study indicate that quantum machine learning classiﬁers perform better than classical machine learning classi-ﬁers in predicting heart *** addition,the study reveals that the bagging ensemble learning technique is effective in improving the prediction accuracy of quantum classiﬁers.

关键词： Machine learning ensemble learning quantum machine learning explainable machine learning heart disease prediction

Climate effects on performance of free space optical communication systems in Yemen

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Frontiers of Optoelectronics 2014年第1期7卷 91-101页

作者： abdulsalam G. ALKHOLIDI Khalil S. ALTOWIJ Faculty of Engineering Electrical Engineering Department Sana'a University Sana'a Yemen

Free space optical （FSO） communication has been considered as an alternative to radio relay link line-of- sight （LOS） communication systems. The total attenuation is a combination of atmospheric attenuation in the atmosphere and geometric losses. The purpose of this paper is to study the geometric loss versus link range （in kin）, divergence angle, transmitter aperture diameter, and receiver aperture diameter. Total attenuation versus low visibility, average visibility, beam divergence, link range and rainfall rate were presented in this paper. Atmospheric attenuation （in dB） and scattering coefficient （in km-~） for several Yemeni main cities were explored. The study was concentrated on received power versus low and average visibilities and link range. Series of related simulation results were illustrated and discussed in this paper about the climate effects on performance of FSO communication systems in Yemen.

关键词： free space optics (FSO) total attenuation,geometric losses haze fog rain receive power

Experimental evaluation of activated carbon derived from South Africa discard coal for natural gas storage

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International Journal of Coal Science & Technology 2019年第3期6卷 459-477页

作者： Jibril abdulsalam Jean Mulopo Bilainu Oboirien Samson Bada Rosemary Falcon Sustainable Energy and Environment Research Group School of Chemical and Metallurgical Engineering University of the Witwatersrand Private Bag X3 Johannesburg WITS 2050 South Africa Clean Coal and Sustainable Energy Research Group Faculty of Engineering and the Built Environment University of the Witwatersrand Private Bag X3 Johannesburg WITS 2050 South Africa Department of Chemical Engineering University of Johannesburg Doomfontein Johannesburg 2028 South Africa

Lacking in literature is the use of discard coal to produce activated carbon and in its subsequent use in the storage of natural gas. In this study, the characterization and gas storage evaluation of a largely porous activated carbon with large surface area synthesized from discard coal were investigated. Discard coals are waste material generated from coal beneficiation process. In developing the activated carbon, chemical activation route with the use of KOH reagent was applied. The effects of KOH/discard coal weight ratio (1:1, 2.5:1, 4:1), temperature (400-800 ℃) and particle size (0.15-0.25 mm, 0.25-0.5 mm, 0.5-1 mm) on the adsorptive properties of the activated carbon were methodically evaluated and optimized using response surface methodology. The synthesized activated carbon was characterized using BET, SEM/EDS, and XRD. The results showed that for each activation process, the surface area and pore volume of the resulting activated carbon increased with increased temperature and KOH/discard coal weight ratio. The maximum surface area of 1826.41 m2/g, pore volume of 1.252 cm^3/g and pore size of 2.77 nm were obtained at carbonization temperature of 800 ℃ and KOH/discard coal weight ratio of 4:1. Methane and nitrogen adsorption data at high pressure were fitted to Toth isotherm model with a predictive accuracy of about 99%. Adsorption parameters using the Toth model provides useful information in the design of adsorbed natural gas storage system. According to the requirements of adsorbent desired for natural gas storage, it could be stated that the synthesized activated carbon could well be applied for natural gas storage.

关键词： Discard coal Activated carbon Surface area Methane Adsorption

Internal electrical fault detection techniques in DFIG-based wind turbines: a review

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Protection and Control of Modern Power Systems 2022年第1期7卷 265-286页

作者： Abdelwahab D.Bebars Abdelfattah A.Eladl Gabr M.abdulsalam Ebrahim A.Badran Electrical Engineering Department Faculty of EngineeringMansoura UniversityEl-MansouraEgypt

The keys factor in making wind power one of the main power sources to meet the world’s growing energy demands is the reliability improvement of wind turbines(WTs).However,the eventuality of fault occurrence on WT com-ponents cannot be avoided,especially for doubly-fed induction generator(DFIG)based WTs,which are operating in severe *** maintenance need increases due to unexpected faults,which in turn leads to higher operating cost and poor *** investigation into DFIG internal fault detection techniques has been carried out in the last *** paper presents a detailed review of these *** discusses the methods that can be used to detect internal electrical faults in a DFIG stator,rotor,or both.A novel sorting technique is presented which takes into consideration different parameters such as fault location,detection technique,and DFIG *** main mathematical representation used to detect these faults is presented to allow an easier and faster under-standing of each *** addition,a comparison is carried out in every section to illustrate the main differences,advantages,and disadvantages of every method and/or *** real monitoring systems available in the market are ***,recommendations for the challenges,future work,and main gaps in the field of internal faults in a DFIG are *** review is organized in a tutorial manner,to be an effective guide for future research for enhancing the reliability of DFIG-based WTs.

关键词： DFIG Wind turbines Internal fault detection Reliability improvement