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A Low Complexity ML-Based Methods for Malware Classification

Computers, Materials & Continua 2024年第9期80卷 4833-4857页

作者： Mahmoud E.Farfoura Ahmad Alkhatib Deema mohammed Alsekait Mohammad Alshinwan sahar A.El-Rahman Didi Rosiyadi Diaa salama Abd Elminaam Cybersecurity Department Al-Zaytoonah University of JordanAmman11733Jordan Department of Computer science and Information Technology Applied CollegePrincess Nourah Bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Faculty of Information Technology Applied Science Private UniversityAmman11931Jordan Computer systems Program-Electrical Engineering Department Faculty of Engineering-ShoubraBenha UniversityCairo11629Egypt Research Center for Artificial Intelligence and Cybersecurity Electronics and Informatics OrganizationNational Research and Innovation Agency(BRIN)KST Samaun SamadikunBandung40135Republic of Indonesia Jadara Research Center Jadara UniversityIrbid21110Jordan MEU Research Unit Middle East UniversityAmman11831Jordan

The article describes a new method for malware classification,based on a Machine Learning(ML)model architecture specifically designed for malware detection,enabling real-time and accurate malware *** an innovative feature dimensionality reduction technique called the Interpolation-based Feature Dimensionality Reduction Technique(IFDRT),the authors have significantly reduced the feature space while retaining critical information necessary for malware *** technique optimizes the model’s performance and reduces computational *** proposed method is demonstrated by applying it to the BODMAs malware dataset,which contains 57,293 malware samples and 77,142 benign samples,each with a 2381-feature *** the IFDRT method,the dataset is transformed,reducing the number of features while maintaining essential data for accurate *** evaluation results show outstanding performance,with an F1 score of 0.984 and a high accuracy of 98.5%using only two reduced *** demonstrates the method’s ability to classify malware samples accurately while minimizing processing *** method allows for improving computational efficiency by reducing the feature space,which decreases the memory and time requirements for training and *** new method’s effectiveness is confirmed by the calculations,which indicate significant improvements in malware classification accuracy and *** research results enhance existing malware detection techniques and can be applied in various cybersecurity applications,including real-timemalware detection on resource-constrained *** and scientific contribution lie in the development of the IFDRT method,which provides a robust and efficient solution for feature reduction in ML-based malware classification,paving the way for more effective and scalable cybersecurity measures.

关键词： Malware detection ML-based models dimensionality reduction feature engineering

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Atypical Weight Loss in Two Patients with schizophrenia Treated with Clozapine: A Case Report

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Open Journal of Applied sciences 2024年第9期14卷 2544-2558页

作者： Amel Kamal mohammed Ghaday saad Almutairi Abdulsalam Abdullah Almreef Psychiatry Department Mental Health Hospital Hafr al-Batin Saudi Arabia College of Medicine Qassim University Unizah Saudi Arabia

Clozapine is widely recognized as an effective antipsychotic medication for treatment-resistant schizophrenia, but it is typically associated with significant weight gain. This case report presents two unusual cases of patients with schizophrenia who experienced substantial weight loss while on long-term clozapine therapy. The first case involves a 35-year-old male who lost 21.3% of his initial body weight, and the second case describes a 54-year-old female who lost 30.2% of her initial weight, despite having comorbid hypothyroidism. Both patients showed improvement in psychiatric symptoms concurrent with the weight loss. Comprehensive investigations did not reveal other clear etiologies for the weight reduction. These cases challenge the conventional understanding of clozapine’s metabolic effects and highlight the potential for atypical responses in some individuals. The report discusses possible mechanisms for this unusual phenomenon, including genetic factors and altered pharmacokinetics. It also emphasizes the need for individualized monitoring and management strategies in clozapine therapy. These findings contribute to the growing body of evidence suggesting that metabolic responses to clozapine may be more complex and varied than previously thought, underscoring the importance of personalized approaches in schizophrenia treatment.

关键词： schizophrenia Clozapine Weight Loss Treatment-Resistant Atypical Antipsychotics Metabolic Effects Case Report

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MXene@c-MWCNT Adhesive silica Nanofiber Membranes Enhancing Electromagnetic Interference shielding and Thermal Insulation Performance in Extreme Environments

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Nano-Micro Letters 2024年第10期16卷 82-98页

作者： Ziyuan Han Yutao Niu Xuetao shi Duo Pan Hu Liu Hua Qiu Weihua Chen Ben Bin Xu Zeinhom MEl-Bahy Hua Hou Eman Ramadan Elsharkawy mohammed AAmin Chuntai Liu Zhanhu Guo Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002People's Republic of China school of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026People's Republic of China Key Laboratory of Multifunctional Nanomaterials and smart systems Advanced Materials DivisionSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123People's Republic of China shaanxi Key Laboratory of Macromolecular science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi'an 710072People's Republic of China College of Chemistry&Green Catalysis Center Zhengzhou UniversityZhengzhou 450001People's Republic of China Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle Upon Tyne NE18UK Department of Chemistry Faculty of ScienceAl-Azhar UniversityNasr City 11884CairoEgypt Department of Chemistry Faculty of ScienceNorthern Border UniversityArarSaudi Arabia Department of Chemistry College of ScienceTaif UniversityP.O.Box 1109921944 TaifSaudi Arabia

A lightweight flexible thermally stable composite is fabricated by com-bining silica nanofiber membranes(sNM)with MXene@c-MWCNT hybrid *** flexible sNM with outstanding thermal insulation are prepared from tetraethyl orthosilicate hydrolysis and condensation by electrospinning and high-temperature calcination;the MXene@c-MWCNT_(x:y)films are prepared by vacuum filtration *** particular,the sNM and MXene@c-MWCNT_(6:4)as one unit layer(sMC_(1))are bonded together with 5 wt%polyvinyl alcohol(PVA)solution,which exhibits low thermal conductivity(0.066 W m^(-1)K^(-1))and good electromagnetic interference(EMI)shielding performance(average EMI sE_(T),37.8 dB).With the increase in func-tional unit layer,the overall thermal insulation performance of the whole composite film(sMC_(x))remains stable,and EMI shielding performance is greatly improved,especially for sMC_(3)with three unit layers,the average EMI sET is as high as 55.4 *** addition,the organic combination of rigid sNM and tough MXene@c-MWCNT_(6:4)makes sMC_(x)exhibit good mechanical tensile ***,sMC_(x)exhibit stable EMI shielding and excellent thermal insulation even in extreme heat and cold ***,this work provides a novel design idea and important reference value for EMI shielding and thermal insulation components used in extreme environmental protection equipment in the future.

关键词： siO_(2)nanofiber membranes MXene@c-MWCNT Composite film Thermal insulation Electromagnetic interference shielding

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Adherence to Advisory Committee on Immunization Practices in diabetes mellitus patients in saudi Arabia:A multicenter retrospective study

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World Journal of Diabetes 2024年第3期15卷 440-454页

作者： saleh Fahad Alqifari Aya K Esmail Dalal M Alarifi Ghalya Y Alsuliman Maram M Alhati May R Mutlaq mohammed Aldhaeefi shaden A Alshuaibi Palanisamy Amirthalingam Abrar Abdallah Afaf s Wasel Heba R Hamad shoroq Alamin Tasneem H Atia Tariq Alqahtani Department of Pharmacy Practice University of TabukTabuk 71491Saudi Arabia Department of Clinical sciences Sulaiman Alrajhi UniversityQassim 52726Saudi Arabia Department of Family Medicine International Medical CenterJeddah 23214Saudi Arabia Clinical and Administrative Pharmacy sciences College of PharmacyHoward UniversityWashingtonDC 20059United States Department of Pharmacology King Saud Bin Abdulaziz University for Health SciencesKing Abdullah International Medical Research CenterRiyadh 11481Saudi Arabia

BACKGROUND Patients with diabetes mellitus(DM)are predisposed to an increased risk of infection signifying the importance of vaccination to protect against its potentially severe *** Centers for Disease Control and Prevention/Advisory Committee on Immunization Practices(CDC/ACIP)issued immunization recommendations to protect this patient *** To assess the adherence of patients with DM to the CDC/ACIP immunization recommendations in saudi Arabia and to identify the factors associated with the vaccine adherence *** An observational retrospective study conducted in 2023 was used to collect data on the vaccination records from 13 diabetes care centers in saudi Arabia with 1000 eligible patients in phase I with data collected through chart review and 709 patients in phase II through online *** Among participants,10.01%(n=71)had never received any vaccine,while 85.89%(n=609)received at least one dose of the coronavirus disease 2019(COVID-19)vaccine,and 34.83%(n=247)had received the annual influenza *** 2.96%(n=21),2.11%(n=15),and 1.12%(n=8)received herpes zoster,tetanus,diphtheria,and pertussis(Tdap),and human papillomavirus(HPV)vaccines,*** patients with DM in saudi Arabia,the rate of vaccination for annual influenza and COVID-19 vaccines was higher compared to other vaccinations such as herpes zoster,Tdap,pneumococcal,and *** such as vaccine recommendations provided by family physicians or specialists,site of care,income level,DM-related hospitalization history,residency site,hemoglobin A1c(HbA1c)level,and health sector type can significantly influence the vaccination rate in patients with *** non-vaccinated patients with DM,the most reported barriers were lack of knowledge and fear of side *** signifies the need for large-scale research in this area to identify additional factors that might facilitate adherence to CDC/ACIP vaccine recommendations in patients with *** In s

关键词： Diabetes mellitus Vaccine recommendation COVID-19 vaccine Influenza vaccine Pneumococcal vaccine Immunization Retrospective study

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Incidence of urinary incontinence following endoscopic laser enucleation of the prostate by en-bloc and non-en-bloc techniques:a multicenter,real-world experience of 5068 patients

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Asian Journal of Andrology 2024年第3期26卷 233-238页

作者： Daniele Castellani Vineet Gauhar Khi Yung Fong Mario sofer Moisés Rodríguez socarrás Azimdjon N Tursunkulov Lie Kwok Ying sarvajit Biligere Ho Yee Tiong Dean Elterman Abhay Mahajan Mark Taratkin sorokin Nikolai Ivanovich Tanuj Pal Bhatia Dmitry Enikeev Nariman Gadzhiev mohammed Taif Bendigeri Jeremy Yuen-Chun Teoh Marco Dellabella Fernando Gómez sancha Bhaskar Kumar somani Thomas Reinhard William Herrmann Urology Unit IRCCS INRCAAncona 60127Italy Urology Unit Marche University HospitalLe Marche Polytechnic UniversityAncona 60126Italy Department of Urology Ng Teng Fong General HospitalSingapore 609606Singapore Yong Loo Lin school of Medicine National University of SingaporeSingapore 117597Singapore Department of Urology Tel Aviv Sourasky Medical CenterAffiliated to the Sackler School of MedicineTel Aviv UniversityTel Aviv 6423906Israel Department of Urology and Robotic surgery ICUA-Clínica CEMTROMadrid 28701Spain Urology Division Akfa Medline HospitalTashkent 100211Uzbekistan Advanced Urology Gleneagles HospitalSingapore 258499Singapore Department of Urology National University HospitalSingapore 119228Singapore Divisionof Urology Department of SurgeryUniversity of TorontoOntarioToronto M5G 2C4Canada Department of Urology Mahatma Gandhi Mission’s Medical College and HospitalAurangabad 431003India Institute for Urology and Reproductive Health Sechenov UniversityMoscow119435Russian Federation Department of Urologyand Andrology Lomonosov Moscow State UniversityMoscow 119992Russian Federation Department of Urology Sarvodaya Hospital and Research CentreFaridabadHaryana 121006India Department of Urology Medical University of ViennaVienna 1090Austria Department of Urology Saint-Petersburg State University HospitalSaint-Petersburg 199034Russian Federation Department of Urology Asian Institute of Nephrology and UrologyHyderabad 500082India s.H.Ho UrologyCentre Department of SurgeryFaculty of MedicineThe Chinese University of Hong KongHong Kong 96H2+Q9China Department of Urology University Hospitals Southampton NHS TrustSouthampton SO166YDUnited Kingdom Department of Urology Cantonal Hospital Thurgau AGFraunfeld 8500Switzerland

We aim to evaluate the incidence of incontinence following laser endoscopic enucleation of the prostate(EEP)comparing en-bloc(Group 1)versus 2-lobe/3-lobe techniques(Group 2).We performed a retrospective review of patients undergoing EEP for benign prostaticenlargement in 12 centers between January 2020 and January *** were presented as median and interquartile range(IQR).Univariable and multivariable logistic regression analysis was performed to evaluate factors associated with stress urinary incontinence(sUI)and mixed urinary incontinence(MUI).There were 1711 patients in Group 1 and 3357 patients in Group *** in Group 2were significantly younger(68[62–73]years vs 69[63–74]years,P=0.002).Median(interquartile range)prostate volume(PV)wassimilar between the groups(70[52–92]ml in Group 1 vs 70[54–90]ml in Group 2,P=0.774).There was no difference in preoperativeInternational Prostate symptom score,quality of life,or maximum flow ***,morcellation,and total surgical time weresignificantly shorter in Group *** 1 month,overall incontinence rate was 6.3%in Group 1 versus 5.3%in Group 2(P=0.12),and urge incontinence was significantly higher in Group 1(55.1%vs 37.3%in Group 2,Ps,the overall rate ofincontinence was 1.7%in Group 1 versus 2.3%in Group 2(P=0.06),and sUI was significantly higher in Group 2(55.6%vs 24.1%in Group 1,P=0.002).At multivariable analysis,PV and IPss were factors significantly associated with higher odds of transient sUI/***,surgical time,and no early apical release technique were factors associated with higher odds of persistent sUI/MUI.

关键词： benign prostatic hyperplasia en-bloc enucleation endoscopic enucleation of the prostate laser therapy stress urinaryincontinence urge urinary incontinence

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Regulating microstructure and composition by carbonizing in-situ grown metal-organic frameworks on cotton fabrics for boosting electromagnetic wave absorption

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Nano Research 2024年第8期17卷 7290-7300页

作者： Jie Jin Hongsen Long Hu Liu Yan Guo Tiantian Bai Ben Bin Xu mohammed A.Amin Hua Qiu Mohamed H.Helal Chuntai Liu Changyu shen Zeinhom M.El-Bahy Zhanhu Guo state Key Laboratory of structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China China state Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410000China school of Electronic Engineering North China University of Water Resources and Electric PowerZhengzhou 450046China Complex Conditions of High-end Tire Technology Innovation Center Shuguang Rubber Industry Research&Design Institute Co.LtdGuilin 541004China Integrated Composites Lab Department of Mechanical and Civil EngineeringNorthumbria UniversityNewcastle Upon TyneNE18STUK Department of Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia shaanxi Key Laboratory of Macromolecular science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Chemistry Faculty of Arts and ScienceNorthern Border UniversityRafha 73213Saudi Arabia Department of Chemistry Faculty of ScienceAl-Azhar UniversityNasr City 11884CairoEgypt

High-temperature carbonized metal-organic frameworks(MOFs)derivatives have demonstrated their superiority for promising electromagnetic wave(EMW)absorbers,but they still suffer from limited EMW absorption capacity and narrow *** the advantage of microstructure and chemical composition regulation for the design of EMW absorber,hierarchical heterostructured Mos_(2)/Cos_(2)-Co_(3)O_(4)@cabonized cotton fabric(CF)(MCC@CCF)is prepared by growing ZIF-67 MOFs onto CF surface,chemical etching,and *** from the dual loss mechanism of magnetic-dielectric multicomponent carbonized MOFs,chemical etching and carbonization process can effectively introduce abundant micro-gap structure that can result in better impedance matching and stronger absorption capacity via internal reflection,doped heteroatoms(Mo,N,s)to supply additional dipolar polarization loss,and numerous heterointerfaces among Mos_(2),Cos_(2),Co_(3)O_(4),and CCF that produce promoted conduction loss and interfacial polarization ***,a minimal reflection loss of−52.87 dB and a broadest effective absorption bandwidth of 6.88 GHz were achieved via tunning the sample thickness and filler loading,showing excellent EMW absorption *** research is of great value for guiding the research on MOFs derivatives based EMW absorbing materials.

关键词： metal-organic frameworks hierarchical structure chemical etching sulfurization electromagnetic wave absorption

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Link between irritable bowel syndrome,depression,and colorectal cancer risk in young patients:Age-matched nationwide populationbased study

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World Journal of Gastrointestinal Pathophysiology 2024年第3期15卷 1-8页

作者： sai Priyanka Mellacheruvu sai Prasanna Lekkala sukhjinder Chauhan Adil sarvar mohammed sravya R Mundla Ankita shenoy Bilal Khan mohammed Jerrin Bawa shantha Nallapothula Priyatham Gurram Akhil Jain Rupak Desai mohammed Mustafa Nayeem Department of Public Health University of MassachusettsLowellMA 01854United States Department of Internal Medicine Mamata Medical CollegeTelanganaKhammam 507002India Department of Internal Medicine Mountainview HospitalLas VegasNV 89128United States Department of Internal Medicine Central Michigan University College of MedicineSaginawMI 48602United States Department of Public Health Apollo Institute of Medical Sciences and ResearchTelanganaHyderabad 500090India Department of Medicine Dr D.Y.Patil University School of MedicineMaharashtraNavi Mumbai 400706India Department of Medicine Northwestern University Feinberg School of MedicineChicagoIL 60611United States Department of Internal Medicine Flushing Hospital Medical CenterQueensNY 11355United States Department of Internal Medicine PES Institute of Medical Sciences and ResearchAndhra PradeshKuppam 517425India Department of Gastroenterology Mayo ClinicScottsdaleAZ 85259United States Division of Leukemia The University of Texas MD Anderson Cancer CenterHoustonTX 77079United States Independent Researcher AtlantaGA 30079United States Department of Internal Medicine Parkview Medical CenterPuebloCO 81003United States

BACKGROUND There exists a link between irritable bowel syndrome(IBs)and ***,chronic depression is known to increase the risk of cancer in *** this population-based analysis,we investigated the prevalence and the odds of colorectal cancer(CRC)in young-depressed patients with *** To investigate the relationship between IBs and CRC in young,depressed patients using a nationally representative United states inpatient *** The 2019 National Inpatient sample was used to identify young(18-44 years)patients admitted with comorbid depression in the presence vs absence of IBs using relevant International Classification of Diseases,Tenth Revision,Clinical Modification *** endpoint was the prevalence and odds of CRC in age matched(1:1)youngdepressed cohort hospitalized with IBs(IBs+)vs without IBs(IBs-).Multivariable regression analysis was performed adjusting for potential *** Age-matched(1:1)young-depressed IBs+(83.9%females,median age 36 years)and IBs-(65.8%females,median age 36 years)cohorts consisted of 14370 patients in each ***+cohort had higher rates of hypertension,uncomplicated diabetes,hyperlipidemia,obesity,peripheral vascular disease,chronic obstructive pulmonary disease,hypothyroidism,prior stroke,prior venous thromboembolism,anxiety,bipolar disorder,and borderline personality disorder(Ps the ***,prior myocardial infarction,acquired immunodeficiency syndrome,dementia,smoking,alcohol abuse,and drug abuse(Ps comparable in both cohorts[IBs+n=25(0.17%)vs IBs-n=35(0.24%)].Compared to the IBs-cohort,the odds ratio(OR)of developing CRC was not significantly higher[OR 0.71,95% confidence interval(CI)0.23-2.25]in IBs+***,adjusting for baseline sociodemographic and hospital characteristics and relevant comorbidities,the OR was found to be non-significant(OR 0.89,95%CI 0.21-3.83).CONCLUsION This nationwide propensity-matched ana

关键词： Colorectal cancer Depression Irritable bowel syndrome Young patients National inpatient sample Comorbidities

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Thermodynamic Analysis and Optimization of Flat Plate solar Collector Using TiO_(2)/Water Nanofluid

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Journal of Harbin Institute of Technology(New series) 2024年第4期31卷 61-73页

作者： Firas F.Qader Falah Z.mohammed Barhm Mohamad Technical Engineering College-Kirkuk Northern Technical UniversityKirkuk 36001Iraq Medical Device Technology Engineering AL-Qalam University CollegeKirkuk 36001Iraq Department of Petroleum Technology Koya Technical InstituteErbil Polytechnic UniversityErbil 44001Iraq

To research solar energy's efficiency and environmental benefits,the thermal efficiency,exergy,and entropy of solar collectors were *** experiment involved two glass-topped collectors,fluid transfer tubes,and aluminum heat-absorbing *** wool insulation minimized heat loss.A 0.5% TiO_(2)/Water nanofluid was created using a mechanical and ultrasonic *** showed that solar radiation increased thermal efficiency until midday,reaching 48.48% for water and 51.23% for the *** increasing mass flow rates from 0.0045 kg/s to 0.02 kg/s,thermal efficiency improved from 16.26% to 47.37% for water and from 20.65% to 48.76% for the *** water provided 380 W and 395 W of energy in March and April,while the nanofluid increased it to 395 W and 415 W during these *** flow generated energy,and the Reynolds number raised *** noon exergy efficiency for nanofluids was 50%-55%,compared to 30% for *** noon,the broken exergy measured 877.53 W for the nanofluid and 880.12 W for *** Kirkuk,Iraq,the 0.5% TiO_(2)/Water nanofluid outperformed water in solar collectors.

关键词： energy exergy entropy generation nanofluid flat plate solar collector

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Exploring the Prevalence and Contributing Factors of Depression among sickle Cell Anemia Patients in saudi Arabia’s Jazan Region

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International Journal of Mental Health Promotion 2024年第5期26卷 351-359页

作者： Abdullah A.Alharbi Ahmad Y.Alqassim mohammed A.Muaddi Najat H.Aldubayyan Rana I.Abuhadi Futon A.Akoor sarah J.Mobarki Imtenan A.Oberi Ghaidaa H.Alharbi Yara Ajeebi Adnan M.Alkhayat Hafiz Malhan mohammed Bakkar Anwar M.Makeen Family and Community Medicine Department Faculty of MedicineJazan UniversityJazan45142Saudi Arabia Laboratory Department King Fahd Central HospitalMinistry of HealthJazan45142Saudi Arabia Internal Medicine Department Prince Mohammad bin Nasser HospitalMinistry of HealthJazan45142Saudi Arabia Hematology Department King AbdulAziz Medical City for National GuardRiyadh11426Saudi Arabia

sickle Cell Anemia(sCA)is a prevalent genetic condition in saudi Arabia,particularly in the Jazan *** study’s purpose was to assess the prevalence of de-pression among individuals with sCA in this area and to identify the factors associated with this *** study involved 391 adult participants,all patients in the hematology center of Prince mohammed bin Nasser Hospital(PMNH).Data was collected through an anonymous interview questionnaire–the Arabic version of the Patient Health Questionnaire-9(PHQ-9)–between March–May *** questionnaire covered socio-demographic information and variables related to the participant’s sCA history,such as pain levels,frequency of pain,hospitalization duration,and frequency of blood *** variables underwent Chi-square and One-way ANOVA testing,followed by multivariate *** study found a 42%prevalence of depression among the sCA *** significantly linked with heightened depression levels included being widowed or divorced,experiencing frequent and severe pain,and longer duration of hospital *** educational level of at least a bachelor’s degree was also a significant *** study reveals a high prevalence of depression among sCA patients in the Jazan *** underscores the need for policymakers to educate both physicians and patients about the importance of mental health in sCA *** study also highlights the need for more research into the specific causes and effects of depressive symptoms in sCA patients to inform the creation of effective management plans.

关键词： sickle cell anemia prevalence depression public health policy Jazan region saudi Arabia

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Precise separation and efficient recovery of Pd(Ⅱ) from high-level liquid waste by XAD-based adsorbents

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Rare Metals 2024年第10期43卷 5372-5390页

作者： Hao-Ran Dong shun-Yan Ning Zeng-Yuan Li si-Zhi Xu Feng-Tao Hu Feng Gao You-Bin Wang Li-Feng Chen Xiang-Biao Yin Toyohisa Fujita mohammed F.Hamza Yue-Zhou Wei school of Resources Environment and MaterialsGuangxi University school of Nuclear science and Technology University of South China

Efficient separation of palladium (Pd（II）) from high-level liquid waste （HLLW） not only helps the safe disposal of nuclear waste,but also is a vital importan supplement to Pd（II） ***,16 kinds of nove Amberlite XAD resins-based adsorbents were prepared by vacuum impregnation method for the separation of Pd（II）from simulated HLLW,and the MMBT/XAD7HP prepared using 4-methyl-2-mercaptobenzothiazole （MMBT） as ligand and Amberlite XAD7HP resin （XAD7HP） as the carrier was selected as the optimal research *** analysis experiments proved the successful preparation of MMBT/XAD7HP,which exhibited ultrahigh adsorption selectivity for Pd（II）(distribution coefficient （Kd）≥12584.5 ml·g-1,separation factor (sFPd/M)≥2818.4) and superior adsorption capacity(Q≥130.1 mg·g-1).The adsorption kinetics and adsorption isotherms for Pd（II） matched with pseudo-secondorder （PsO） kinetics model and Langmuir model,indicating that the adsorption mode for Pd（II） by MMBT/XAD7 HP was monolayer chemical *** dynamic column experiments showed that MMBT/XAD7 HP achieved efficiently separation of Pd（II） from simulated HLLW,and the recovery rate was nearly 100% The adsorption mechanism was analyzed by Fourier transform infrared spectroscopy （FTIR）,X-ray photoelectron spectroscopy （XPs） and density functional theory（DFT）,and the ultrahigh selectivity of MMBT/XAD7 HP is attributed to the preferred affinity of the soft-N,s donor atoms in MMBT for Pd（II）.MMBT has the shortest frontline molecular orbital energy band gap （HOMO–LUMO） among the four ligands,which makes it easier to become an electron donor to attract Pd2+to participate in ***3-participates in the adsorption to keep charge *** summary,MMBT/XAD7 HP has broad application prospects for the treatment of Pd（II） in HLLW

关键词： Adsorption Column experiments HLLW Palladium XAD

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