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Polydopamine-coated photoautotrophic bacteria for improving extracellular electron transfer in living photovoltaics

Nano Research 2024年第2期17卷 866-874页

作者： Melania Reggente Charlotte Roullier mohammed Mouhib Patricia Brandl Hanxuan Wang Stefano Tacconi Francesco Mura Luciana Dini Rossella Labarile Massimo Trotta Fabian Fischer Ardemis A.Boghossian Institute of Chemical Sciences and Engineering(ISIC) Ecole Polytechnique Fédérale de Lausanne(EPFL)Lausanne 1015Switzerland Department of Biology and Biotechnology Charles Darwin Sapienza University of RomeRome 00185Italy Research Center on Nanotechnology Applied for Engineering of Sapienza(CNIS) University of Rome SapienzaRome 00185Italy CNR-IPCF Consiglio Nazionale delle Ricerche–Istituto per i Processi Chimico Fisici Bari 70126Italy Institute of Life Technologies HES-SO Valais-WallisSion 1950Switzerland Institute for Renewable Energy HES-SO Valais-WallisSion 1950Switzerland

Living photovoltaics are microbial electrochemical devices that use whole cell–electrode interactions to convert solar energy to *** bottleneck in these technologies is the limited electron transfer between the microbe and the electrode *** study focuses on enhancing this transfer by engineering a polydopamine(PDA)coating on the outer membrane of the photosynthetic microbe Synechocystis *** coating provides a conductive nanoparticle shell to increase electrode adhesion and improve microbial charge extraction.A combination of scanning electron microscopy(SEM),transmission electron microscopy(TEM),UV–Vis absorption,and Raman spectroscopy measurements were used to characterize the nanoparticle shell under various synthesis *** cell viability and activity were further assessed through oxygen evolution,growth curve,and confocal fluorescence microscopy *** results show sustained cell growth and detectable PDA surface coverage under slightly alkaline conditions(pH 7.5)and at low initial dopamine(DA)concentrations(1 mM).The exoelectrogenicity of the cells prepared under these conditions was also characterized through cyclic voltammetry(CV)and chronoamperometry(CA).The measurements show a three-fold enhancement in the photocurrent at an applied bias of 0.3 V(***/AgCl[3 M KCl])compared to non-coated *** study thus lays the framework for engineering the next generation of living photovoltaics with improved performances using biosynthetic electrodes.

关键词： biophotovoltaics bioelectronics photosynthetic bacteria cyanobacteria polydopamine adherence

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Photographs and Cartoons: Differences in Interpretation of the Visual Semiotics

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Open Journal of Applied Sciences 2024年第3期14卷 609-625页

作者： Bashayir Al Zahrani mohammed Alhuthali Strategic Planning and Performance Management Department in the Armed Forces Hospitals Taif Saudi Arabia Foreign Languages Department Taif University Taif Saudi Arabia

This study looks at the interaction between the process of intersemiosis and resemiosis in multimodality. The importance of both phases is widely acknowledged as part of the meaning making process but many practical studies focus on the first rather than the second. In particular this study looks at two groups of images about gender relations in Saudi Arabia following the post-2017 reforms of the male guardianship laws. One group are mostly made up of photographs and the second group of cartoons and posters. One important finding is that the latter tend to be less ambiguous in their semiotic structure than the former. In particular, there are instances in the first group where a standard study of intersemiosis indicates low modality but the image may be seen as inherently plausible by many observers. This suggests that while resemiosis can be applied to a single image it may be more appropriate as a tool when applied to an overall news article or set of images. In the same way that not all individual semiotic modes are complementary in how they build meaning, then it is possible for different images to be supportive, contradictory or unclear when studied in isolation.

关键词： Visual Grammar Intersemiosis Multimodality Meaning-Making Cartoons

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Incident Detection Based on Differential Analysis

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Journal of Information Security 2024年第3期15卷 378-409页

作者： mohammed Ali Elseddig Mohamed Mejri Computer Science and Information Technology Sudan University of Science and Technology Khartoum Sudan Computer Science Department Laval University Quebec Canada

Internet services and web-based applications play pivotal roles in various sensitive domains, encompassing e-commerce, e-learning, e-healthcare, and e-payment. However, safeguarding these services poses a significant challenge, as the need for robust security measures becomes increasingly imperative. This paper presented an innovative method based on differential analyses to detect abrupt changes in network traffic characteristics. The core concept revolves around identifying abrupt alterations in certain characteristics such as input/output volume, the number of TCP connections, or DNS queries—within the analyzed traffic. Initially, the traffic is segmented into distinct sequences of slices, followed by quantifying specific characteristics for each slice. Subsequently, the distance between successive values of these measured characteristics is computed and clustered to detect sudden changes. To accomplish its objectives, the approach combined several techniques, including propositional logic, distance metrics (e.g., Kullback-Leibler Divergence), and clustering algorithms (e.g., K-means). When applied to two distinct datasets, the proposed approach demonstrates exceptional performance, achieving detection rates of up to 100%.

关键词： IDS SOC SIEM KL-Divergence K-Mean Clustering Algorithms Elbow Method

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A Review and Bibliometric Analysis of the Current Studies for the 6G Networks

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Computer Modeling in Engineering & Sciences 2024年第9期140卷 2165-2206页

作者： Qusay M.Salih Md.Arafatur Rahman Ahmad Firdaus mohammed Rajih Jassim Hasan Kahtan Jasni Mohamad Zain Ahmed Hussein Ali Faculty of Computing Universiti Malaysia Pahang Al-Sultan Abdullah(UMPSA)PekanPahang26600Malaysia Department of Medical Equipment Technology Engineering Al Salam University CollegeBaghdadIraq School of Mathematics and Computer Science University of WolverhamptonWolverhampton01902UK Department of Production Engineering and Metallurgy University of TechnologyBaghdadIraq Cardiff School of Technologies Cardiff Metropolitan UniversityCardiffCF52YBUK Institute for Big Data Analytics and Artificial Intelligence(IBDAAI) Kompleks Al-KhawarizmiUniversiti Teknologi MARAShah AlamSelangor40450Malaysia Department Computer Science Al-Salam University CollegeBaghdadIraq

The race to develop the next generation of wireless networks,known as Sixth Generation(6G)wireless,which will be operational in 2030,has already *** realize its full potential over the next decade,6G will undoubtedly necessitate additional improvements that integrate existing solutions with cutting-edge ***,the studies about 6G are mainly limited and scattered,whereas no bibliometric study covers the 6G ***,this study aims to review,examine,and summarize existing studies and research activities in *** study has examined the Scopus database through a bibliometric analysis of more than 1,000 papers published between 2017 and ***,we applied the bibliometric analysis methods by including(1)document type,(2)subject area,(3)author,and(4)country of *** study’s results reflect the research 6G community’s trends,highlight important research challenges,and elucidate potential directions for future research in this interesting area.

关键词： 6G bibliometric wireless networks review

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Extra-Axial Anaplastic Pleomorphic Xanthoastrocytoma Mimicking Meningioma: A Case Report with Literature Review

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Open Journal of Modern Neurosurgery 2024年第3期14卷 203-211页

作者： Kaoutar Stitou Ilias Zahir Oualid mohammed Hmamouche Marouane Hammoud Faycal Lakhdar mohammed Benzagmout Khalid Chakour mohammed El Faiz Chaoui Department of Neurosurgery University Hospital of Fez Fez Morocco

Background: A number of meningeal neoplastic lesions may radiologically and clinically simulate meningioma, include hemangiopericytomas, solitary fibrous tumors, schwannomas, hematolymphoid lesions, metastases, and others very rarely, also may clinically mimic meningiomas. Case Description: We present the case of A 28-year-old male patient, with no notable medical history, who presented with worsening headaches for 3 months, imbalance, and visual deficits, An initial MRI revealed extra-axial lesion involving the right Parieto-occipital, The tumor was hypointense on T1-weighted MR images, hyperintense signals on T2-weightedMR images, and heterogeneously enhanced suggestive of a meningioma, total resection was achieved, and the histopathological analysis confirmed the diagnosis of an angioblastic meningioma. However, 15 months later, the patient presented with the same initial visual complaints. A subsequent MRI showed lesion recurrence, leading to a second surgical intervention. The histopathological analysis confirmed the diagnosis of an anaplastic xanthoastrocytoma. Conclusion: This represents an unusual location for an anaplastic pleomorphic xanthoastrocytoma, which should broaden the differential diagnosis of extra-axial lesions.

关键词： Anaplastic Features BRAF Extra-Axial High Mitotic Rate High Proliferation Index Meningeal Pleomorphic Xanthoastrocytoma

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Primary Multiple Cerebral Hydatid Cyst in 8 Year-Old Girl: A Rare Cause of Childhood Seizure

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Open Journal of Modern Neurosurgery 2024年第2期14卷 149-157页

Background: Cystic echinococcosis is a zoonotic infection that occurs worldwide. Humans are infected through ingestion of parasite eggs in contaminated food, water or through direct contact with infected dogs, which are the definite host. Humans serve accidentally as intermediate host, and occurrences are common in children and young adults. Cystic echinococcosis is endemic in Mediterranean, South American, Middle Eastern, Central Asia, East Africa countries and Australia. Multiple cerebral hydatid cysts are very rare with only a few reports in the literature. Case Description: We present the case of an 8-year-old girl who presented with focal seizures, hemiparesis, headache, vomiting and bilateral optic atrophy. Diagnostic workup was performed, and magnetic resonance imaging revealed multiple intracranial cysts predominantly in the right frontal region with significant mass effect. A total of 11 intracranial cysts were removed surgically, and the child recovered uneventfully. Conclusion: Neurosurgeons should keep hydatidosis in the list of differentials when evaluating patients with cystic diseases of the brain. Although the removal of such cysts is challenging, outcomes are excellent when cysts are evacuated without rupture and patients show complete resolution of symptoms.

关键词： Hydatid Cysts Multiple Hydatic Cysts Childhood Seizures

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Evaluation of Serum Soluble CD27 and CXCL10 Levels in Patients With Vitiligo:A Cross-Sectional Study

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International Journal of Dermatology and Venereology 2024年第2期7卷 89-93页

作者： Marwa A.Aboelmagd Hanan A.Assaf mohammed H.Hassan Hanan A.abdelmegeed Ashraf abdelwahab Department of Dermatology Venereology and AndrologyFaculty of MedicineSohag UniversitySohag 82524Egypt Department of Medical Biochemistry Faculty of MedicineSouth Valley UniversityQena 83523Egypt Department of Dermatology Sohag Hospital for Mental HealthSohag 82524Egypt

Objective:Vitiligo is a relatively common skin disfiguring disorder that exhibits a fluctuating course between activity and stability,making monitoring and management *** plays a crucial role in the pathogenesis of *** autoimmune disorders have been associated with both CD27 and chemokine(C-X-C motif)ligand 10(CXCL10).However,trials evaluating their role in vitiligo are lacking in the Egyptian *** evaluated the circulating levels of these 2 biomarkers in patients with vitiligo and the possible correlation between their levels and disease ***:This cross-sectional study included 70 patients with vitiligo and 20 healthy *** patients were clinically assessed and then divided into active and stable groups according to clinical signs of activity and Vitiligo Disease Activity *** levels of CD27 and CXCL10 in the serum were assessed using an enzyme-linked immunosorbent assay in both the patients and the controls,then the Mann-Whitney U and Kruskal-Wallis tests were used to analyze the difference between the ***:Active and stable vitiligo patients have significantly higher median serum CXCL10(385.9 and 245.2 pg/mL)and CD27(61.6 and 66.5 ng/mL)levels compared to the controls(193 pg/mL and 52.5 ng/mL,respectively,all P<0.05).In vitiligo cases,although CXCL10 levels significantly increased with disease activity(P<0.001),CD27 levels were comparable between the 2 subgroups(P=0.953).CXCL10 positively correlated with disease activity(r=0.887,P<0.001).CXCL10 had a higher sensitivity and a lower specificity(95.7%and 60.0%,respectively)compared to CD27(71.4%and 75%,respectively)for differentiating cases from ***:There is a possibility that CXCL10 and CD27 are involved in the development and course of vitiligo.

关键词： vitiligo disease activity chemokine(C-X-C motif)ligand 10 CD27

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Experimental and numerical settlement analysis of railway track over geogrid reinforced ballast

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Railway Sciences 2024年第3期3卷 311-331页

作者： mohammed Y.Fattah Mahmood R.Mahmood mohammed F.Aswad Department of Civil Engineering UOTBaghdadIraq

Purpose-The main objective of the present research is to investigate the benefits of using geogrid reinforcement in minimizing the rate of deterioration of ballasted rail track geometry resting on soft clay and to explore the effect of load amplitude,load frequency,presence of geogrid layer in ballast layer and ballast layer thickness on the behavior of track *** variables are studied both experimentally and *** paper examines the effect of geogrid reinforced ballast laying on a layer of clayey soil as a subgrade layer,where a half full scale railway tests are conducted as well as a theoretical analysis is ***/methodologylapproach-The experimental tests work consists of laboratory model tests to investigate the reduction in the compressibility and stress distribution induced in soft clay under a ballast railway reinforced by geogrid reinforcement subjected to dynamic *** model based on an approximate half scale for general rail track engineering practice is adopted in this study which is used in Iraqi *** investigated parameters are load amplitude,load frequency and presence of geogrid reinforcement layer.A half fuli-scale railway was constructed for carrying out the tests,which consists of two rails 800 mm in iength with three w00den sleepers(900 mm×90 mm×90 mm).The ballast was overlying 500 mm thick clay *** tests were carried out with and without geogrid reinforcement,the tests were carried out in a well tied steel box of 1.5 m length X 1 m width X 1 m height.A series of laboratory tests were conducted to investigate the response of the ballast and the clay layers where the ballast was reinforced by a *** in ballast and clay,was measured in reinforced and unreinforced ballast *** addition to the laboratory tests,the application of numerical analysis was made by using the finite element program PLAXIS 3D ***-It was concluded that the settlement increased with increasing t

关键词： Track ettlement Ballast Finiteelements

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Capparis spinosa L waste activated carbon as an efficient adsorbent for crystal violet toxic dye removal: Modeling, optimization by experimental design, and ecological analysis

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Chinese Journal of Chemical Engineering 2024年第7期71卷 283-302页

作者： mohammed Benjelloun Youssef Miyah Salma Ssouni Soulaiman Iaich Mohamed El-habacha Salek Lagdali Khadija Saka El Mustafa Iboustaten abdelaziz Ait Addi Sanae Lairini Rabia Bouslamti Laboratory of Materials ProcessesCatalysisand EnvironmentHigher School of TechnologySidi Mohamed Ben Abdellah UniversityFez 30070Morocco Ministry of Health and Social Protection Higher Institute of Nursing Professions and Health TechniquesFez/Meknes 30070Morocco Laboratory of Biochemistry Faculty of MedicinePharmacy and DentistrySidi Mohamed Ben Abdellah UniversityFez 30070Morocco Laboratory of Applied Chemistry and Environment Faculty of SciencesIbnou Zohr UniversityAgadir 80322Morocco Research Team of Energy and Sustainable Development Higher School of TechnologyIbnou Zohr UniversityGuelmim 81000Morocco Organic Chemistry and Physical Chemistry Laboratory Faculty of SciencesIbnou Zohr UniversityAgadir 80322Morocco

Textile dyes are dramatic sources of pollution and non-aesthetic disturbance of aquatic life and therefore represent a potential risk of bioaccumulation that can affect living *** is imperative to reduce or eliminate these dyes from liquid effluents with innovative biomaterials and ***,this research aims to highlight the performance of Capparis spinosa L waste-activated carbon(CSLW-AC)adsorbent to remove crystal violet(CV)from an aqueous *** mechanism of CV adsorption on CSLW-AC was evaluated based on the coupling of experimental data and different characterization *** efficiency of the CSLW-AC material reflected by the equilibrium adsorption capacity of CV could reach more than 195.671 mg·g^(–1) when 0.5 g·L^(–1) of CSLW-AC(Particle size≤250μm)is introduced into the CV of initial concentration of 100 mg·L^(–1) at pH 6 and temperature 65℃ and in the presence of potassium ions after 60 min of contact time according to the one parameter at a time *** adsorption behavior of CV on CSLW-AC was found to be consistent with the pseudo-second-order kinetic model and Frumkin's linear isothermal *** thermodynamic aspects indicate that the process is physical,spontaneous,and *** optimization of the process by the Box Behnken design of experiments resulted in an adsorption capacity approaching 183.544 mg·g^(–1)([CV]=100 mg·L^(–1) and[CSLW-AC]=0.5 g·L^(–1) at 35 min).The results of the Lactuca sativa seeds germination in treated CV(70%),adsorbent solvent and thermal regeneration(more than 5 cycles),and process cost analysis(1.0484 USD·L^(–1))tests are encouraging and promising for future exploitations of the CSLW-AC material in different industrial fields.

关键词： Box Behnken Capparis spinosa L waste-activated carbon Cost analysis Isotherm Kinetic Regeneration

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Assessment of Breast Cancer Prevention Practices among Women Attending Primary Health Care in Abha City, Aseer Region, Saudi Arabia

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International Journal of Clinical Medicine 2024年第2期15卷 31-54页

作者： Sabah mohammed Asiri Sultan Yahia Alfifii Tagreed Khairan Al-Rashidi Sager Misfer Alqahtani Faiz Abdulrahman Alshafa Fayez Mari Alamri Amal mohammed Asiri Fatima mohammed Ali Almagadi Thuraya mohammed Asiri Department of Therapeutic Assistance Management General Directorate of Health Affairs Asser Region Abha Saudi Arabia Department of Health Affairs General Directorate of Health Affairs Asser Region Abha Saudi Arabia Department of Kidney King Khaled Hospital Hail Saudi Arabia Department of Nursing Sarat Abida Hospital Aseer Saudi Arabia Department of Radiation Oncology King Faisal Medical City Abha Saudi Arabia Department of Health Affairs KSA MOH Department of Kidney Dialysis Centers General Directorate of Health Affairs Aseer Region Abha Saudi Arabia Department of Operation Ahad Rafidah Hospital General Directorate of Health Affairs in Asseer Region Abha Saudi Arabia South Qunfudah General Hospital Jizan Saudi Arabia Armed Forces Southern Region Hospital Aseer Saudi Arabia

Cancer is a leading cause of death worldwide, with breast cancer being the most common (2.26 million new cases and 685,000 deaths). In Saudi Arabia, breast cancer ranked the first among females in 2014, accounting for 15.9% of all cancers reported among Saudi nationals and 28.7% of all cancers reported among females of all ages. Early detection of breast cancer could decrease the risks, have a better prognosis, and have better outcomes/more successful treatments. Prevalence of breast cancer reached more than 25% of all diagnosed cancer in the kingdom among women. Aim: This study aims to assess the knowledge and performance of women attending primary care centers about breast self-examination and mammogram screening for prevention and early detection of breast cancer in Abha city primary healthcare centers, Kingdom of Saudi Arabia. Research Method: cross sectional design was conducted by using questionnaire, which was distributed to primary care center nurses. The collected data was statistically analyzed using the Statistical Package for Social Sciences, version 25. Results: The study found that participants had poor awareness and knowledge about breast self-examination, risk factors for breast cancer, and trends and practices in early diagnosis of breast cancer. Conclusion and Recommendations: It recommends increasing awareness campaigns and providing educational programs to improve knowledge and practices.

关键词： Assessment Breast Cancer Prevention Practices Women Attending Health Care Centers Abha City

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