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Acta Geochim..a 2024年第2期43卷 399-410页

作者： Salih m..wadh Zinah S.al-Ankaz m..anad r.A.al-Owaidi John S.Arm..rong-altrin Departm..t of Geology College of ScienceUniversity of BaghdadBaghdadIraq Departm..t of Geology College of ScienceUniversity of WasitWasit 52011Iraq Departm..t of Applied Geology College of ScienceUniversity of BabylonBabylon 51001Iraq Unidad de Procesos Oceanicos y Costeros Instituto de Ciencias del Mar y LimnologíaUniversidad Nacional Autonoma de MexicoCiudad Universitaria04510 Mexico CityCDMXMexico Departm..t of m..ine Sciences Bharathidasan UniversityTiruchirapalliTamil Nadu 620024India

The sandstones of the Late m..cene–Pliocene Dibdibba Form..ion in the Najaf–Karbala Plateau and Basra were exam..ed to determ..e their source rocks and origin. The rare earth elem..ts(rEE) and trace elem..ts(Sc, Co, V, and Th) concentrations in these sandstones revealed that they likely derived from.. single source. The steep light rare earth elem..ts(LrEE) and flat, heavy rare earth elem..t(HrEE) patterns, negative Eu anom..y, and high ΣrEE contents in sandstones suggest its derivation from.. suggests that a passive continental m..gin environm..t and originated from..elsic source rocks. The average concentration of ΣrEE is 93.5 ppm..which is lower than that of the average crustal com..sitions like Upper Continental Crust and Post Archean Australian Shale. The higher proportion of LrEE com..red to HrEE im..ies that these sandstones were recycled and derived from.. distal source. The Th/Co, Th/Sc, La/Sc, La/Co, Eu/Eu*and(La/Lu)cn elem..tal ratios indicated that these Late m..cene–Pliocene sandstones were derived from..elsic rocks located in the m..ginal region of the Arabian Shield.

关键词： rEE Dibdibba form..ion Clastic sedim..ts Passive continental m..gin

Charged Particles Capture Cross-section by a Weakly Charged Schwarzschild Black Hole

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research in Astronom..and Astrophysics 2024年第8期24卷 141-146页

作者： A.m..l Zahrani A.al-Jama Physics Departm..t King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia

We study the capture cross-section of charged particles by a weakly charged Schwarzschild black *** dependence of the m..im.. im..ct param..er for capture on the particle’s energy is investigated num..ically for different values of the electrom..netic coupling strength between the particle and the black *** capture cross-section is then *** show that the capture cross-section is independent of the electrom..netic coupling for ultra-relativistic *** astrophysical im..ications of our results are discussed.

关键词： stars black holes-accretion-accretion disks-black hole physics

role of Air Staging in a Batch-Type Fixed Bed Biom..s Com..stor under Constant Prim..y Air

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Journal of Therm.. Science 2024年第1期33卷 284-299页

作者： Awais JUNEJO Yasir m..L-ABDELI Jacobo POrTEIrO School of Engineering Edith Cowan UniversityJoondalupWA 6027Australia CINTECX Universidade de Vigo Grupo de Tecnoloxia Enerxetica(GTE)36310 VigoEspana

Staged com..stion of biom..s is the m..t suitable therm..chem..al conversion for achieving lower gaseous em..sions and higher fuel conversion *** a staged fixed bed com..stion of biom..s,com..stion air is supplied in two *** the first stage,prim..y air is provided below the fuel,whereas in the later stage,secondary air is supplied in the freeboard *** available literature on the effects of air staging(secondary air location) at a constant prim..y air flow rate on com..stion characteristics in a batch-type fixed bed com..stor is lim..ed and hence warrants further *** study resolves the effect of air staging,by varying the location of secondary air in the freeboard at five secondary to total air ratios in a batch-type fixed bed *** are reported for the effects of these controlled param..ers on fuel conversion rate,overall gaseous em..sions(CO_(2),CO and NO_x) and tem..rature *** fuel used throughout was densified hardwood *** show that a prim..y freeboard length(distance between fuel bed top and secondary air injection) of200 m..has higher fuel conversion rates and tem..ratures as well as lower CO em..sions,at a secondary to total air ratio of 0.75 as com..red to prim..y freeboard length of 300 ***,NO_x em..sions were found to be lower for a prim..y freeboard length of 300 m..as com..red to 200 *** increase in secondary to total air ratio from...33 to 0.75 resulted in higher freeboard tem..ratures and lower CO as well as NO_x *** outcom.. of this study will be helpful in the effective design of com..rcial scale biom..s com..stors for m..e efficient and environm..tally friendly com..stion.

关键词： fixed bed com..stor biom..s com..stion air staging freeboard tem..rature burning rate gaseous em..sions

A Weighted m..ti-Layer Analytics Based m..el for Em..i recom..ndation

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Com..ters, m..erials & Continua 2024年第1期78卷 1115-1133页

作者： Am..a m..drees Abdul Lateef m..zouq al-Solami Faculty of Com..ters and Inform..ion Technology Future University in EgyptCairo11835Egypt alkam.. College of Science and Arts University of JeddahJeddah21959Saudi Arabia

The developed system..or eye and face detection using Convolutional Neural Networks(CNN)m..els,followed by eye classification and voice-based assistance,has shown prom..ing potential in enhancing accessibility for individuals with visual *** m..ular approach im..em..ted in this research allows for a seam..ss flow of inform..ion and assistance between the different com..nents of the *** research significantly contributes to the field of accessibility technology by integrating com..ter vision,natural language processing,and voice *** leveraging these advancem..ts,the developed system..ffers a practical and efficient solution for assisting blind *** m..ular design ensures flexibility,scalability,and ease of integration with existing assistive ***,it is im..rtant to acknowledge that further research and im..ovem..ts are necessary to enhance the system.. accuracy and ***-tuning the CNN m..els and expanding the training dataset can im..ove eye and face detection as well as eye classification ***,incorporating real-tim..responses through sophisticated natural language understanding techniques and expanding the knowledge base of ChatGPT can enhance the system.. ability to provide com..ehensive and accurate ***,this research paves the way for the developm..t of m..e advanced and robust system..for assisting visually im..ired *** leveraging cutting-edge technologies and integrating them..nto am..ular fram..ork,this research contributes to creating a m..e inclusive and accessible society for individuals with visual *** work can focus on refining the system..ddressing its lim..ations,and conducting user studies to evaluate its effectiveness and im..ct in real-world scenarios.

关键词： Social networks text analytics em..i prediction features extraction inform..ion retrieval

Superior rectus/levator com..ex in acquired anophthalm.. socket repaired with spheric im..ant—a com..ted tom..raphy scan and topographic study

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International Journal of Ophthalm..ogy(English edition) 2024年第8期17卷 1483-1488页

作者： Shaikha al Eid Ham.. m..lSulaim.. Sahar m..lkham..y Osam..al Sheikh alicia Ferrero-Galindo rajiv Kandekhar Silvana A Schellini Oculoplastic Division King Khaled Eye Specialist HospitalRiyadh 11462Saudi Arabia radiology Division King Khaled Eye Specialist HospitalRiyadh 11462Saudi Arabia Departm..t of Diagnostic radiology Mansoura Faculty of MedicineMansoura 35511Egypt University Hospital rio Hortega Valladolid 47012Spain research Departm..t King Khaled Eye Specialist HospitalRiyadh 11462Saudi Arabia Ophthalm..ogy Departm..t Medical SchoolState University of Sao PauloBotucatu 18618-687Brazil

AIm..o determ..e whether the levator palpebrae superioris(LPS)/superior rectus(Sr)m..cle com..ex,can influence the position of the upper lid and fornix in acquired anophthalm.. ***:This com..rative non-random..ed and non-interventional study included retrospective data of 21 patients with unilateral acquired anophthalm.. sockets repaired with spheric ***-resolution com..ted tom..raphy(CT)m..surem..ts of the LPm..r m..cle com..ex and clinical topographic position of the upper lid,superior and inferior fornix depth in prim..y gaze position were *** data were presented as frequency and percentage proportions and quantitative variables com..ring the socket m..surem..ts with the norm.. contralateral orbit was statistically analyzed using non-param..ric tests considering Palm.. orbits had a significantly shorter LPS length(P=0.01)and significantly thicker Sr(P=0.02)than the norm.. *** was present in anophthalm.. sockets but not in norm.. orbits(P=0.002),while levator function was norm.. in both(P>0.05,all com..risons).The superior fornix depth was sim..ar in the anophthalm.. socket and the contralateral norm.. orbit(P=0.192)as well the inferior fornix depth(P=0.351).CONCLUSION:Acquired anophthalm.. sockets repaired with spheric im..ants have shorter LPS,thicker Sr,and m..e lagophthalm.. than norm.. *** relationship of the LPS and Sr with other orbital structures,associated with passive or active forces acting in the final position of the lids and external ocular prosthesis should be further investigated.

关键词： anophthalm.. socket spheric im..ant levator palpebrae superioris superior rectus lagophthalm.. fornix depth

Concom..ant determ..ation of hem..ological indices supported the application of the album..-bilirubin score in non-m..ignant liver diseases

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World Journal of Hepatology 2024年第9期16卷 1308-1311页

作者： m..wan S m..l-Nim.. Departm..t of Pharm..ology College of MedicineUniversity of DiyalaBaqubah 32001Iraq

The album..-bilirubin(alBI)score is a useful prognostic m..ker that predicts m..tality in patients suffering from..erm..al ***,it has been reported that alBI score is a predictor of non-m..ignant liver *** cutoff point of the alBI score that distinguishes hepatocellular carcinom..from..on-m..ignant liver disease is still not ***,the alBI score is a sensi-tive rather than a specific predictor of the poor outcom.. of liver *** are m..y hem..ological indices and ratios that are utilized as prognostic *** these biom..kers are the neutrophil-to-lym..ocyte ratio,platelet-to-lym..ocyte ratio(PLr),and platelet-hem..lobin ratio(PHr),which are useful discrim..ating prognostic biom..kers for liver diseases,e.g.,hepato-cellular carcinom..hepatitis,liver fibrosis,*** is evidence that PLr and PHr are prognostic biom..kers that predict the poor outcom.. of ***,concom..ant m..surem..ts of alBI score and PHr or alBI score and PLr will im..ove the predictive value that can differentiate hepatocellular carcinom..from..on-m..ignant diseases.

关键词： album..-bilirubin score Hepatocellular carcinoma Non-m..ignant diseases Platelet-lym..ocyte ratio Platelet-hem..lobin ratio

Beyond p-y m..hod:A review of artificial intelligence approaches for predicting lateral capacity of drilled shafts in clayey soils

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Journal of rock m..hanics and Geotechnical Engineering 2024年第9期16卷 3812-3840页

作者： m...al-Atroush A.E.Aboelela Ezz El-Din Hem..n Civil and Environm..tal Engineering Program Engineering Management DepartmentCollege of EngineeringPrince Sultan UniversityRiyadhSaudi Arabia Departm..t of Structural Engineering Faculty of EngineeringAin Shams UniversityCairoEgypt Structure and m..erials research Lab Prince Sultan UniversityRiyadhSaudi Arabia Com..ter Science and Engineering Departm..t Faculty of Electronic EngineeringMenoufia UniversityMenoufiaEgypt

In 2023,pivotal advancem..ts in artificial intelligence(AI)have significantly *** that in m..d,traditional m..hodologies,notably the p-y approach,have struggled to accurately m..el the com..ex,nonlinear soil-structure interactions of laterally loaded large-diam..er drilled *** study undertakes a rigorous evaluation of m..hine learning(m..and deep learning(DL)techniques,offering a com..ehensive review of their application in addressing this geotechnical challenge.A thorough review and com..rative analysis have been carried out to investigate various AI m..els such as artificial neural networks(ANNs),relevance vector m..hines(rVm..,and least squares support vector m..hines(LSSVm...It was found that despite m..approaches outperform..g classic m..hods in predicting the lateral behavior of piles,their‘black box'nature and reliance only on a data-driven approach m..e their results showcase statistical robustness rather than clear geotechnical insights,a fact underscored by the m..hem..ical equations derived from..hese ***,the research identified a gap in the availability of drilled shaft datasets,lim..ing the extendibility of current findings to large-diam..er *** extensive dataset,com..led from.. series of lateral loading tests on free-head drilled shaft with varying properties and geom..ries,was introduced to bridge this *** paper concluded with a direction for future research,proposes the integration of physics-inform.. neural networks(PINNs),com..ning data-driven m..els with fundam..tal geotechnical principles to im..ove both the interpretability and predictive accuracy of AI applications in geotechnical engineering,m..king a novel contribution to the field.

关键词： Laterally loaded drilled shaft load transfer and failure m..hanisms Physics-inform.. neural networks(PINNs) P-y curves Artificial intelligence(AI) Dataset

A new fractional order 6D chaotic m..el:Study of m..el dynam..s,system..tructure graph,electronic circuit realization and fractional control

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Journal of Ocean Engineering and Science 2024年第2期9卷 112-125页

作者： m..igazy Norah alm..ki Shabbir m..am..d A.al-Gham.. Departm..t of m..hem..ics and Statistics College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Departm..t of Physics and Engineering m..hem..ics Faculty of Electronic EngineeringMenoufia UniversityMenouf 32952Egypt research Center for Advanced m..erials Science(rCAm.. King Khalid UniversityP.O.Box 9004Abha 61413Saudi Arabia Departm..t of Chem..try College of ScienceKing Khalid UniversityP.O.Box 9004Abha 61413Saudi Arabia Departm..t of Physics Faculty of ScienceKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia

A new fractional 6D chaotic m..el is constructed in this *** new fractional 6D chaotic m..el has six positive param..ers plus the fractional order with eight nonlinear *** com..icated chaotic dy-nam..s of the new fractional 6D m..el is presented and *** basic properties of this m..el are studied and its chaotic attractors,dissipative feature,sym..try,equilibrium..oints,Lyapunov Exponents are *** new dynam..s of the 6D fractional m..el is num..ically sim..ated using m..lab *** addition,utilizing the graph theory tools certain structural characteristics are *** electrical circuit is built to im..em..t the new 5.4 fractional order 6D ***,an active fractional order controller is proposed to control the new m..el at different fractional *** chaos of the new m..el is very useful and can be used to produce random..eys for data encryption.

关键词： Chaotic systems Fractional calculus Lyapunov exponents Chaotic attractors Adjacency m..rix Herm..ian m..rix Electronic circuit realization

Assessm..t of plant diversity of endem.. species of the Saharo-Arabian region in Egypt

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Journal of Arid Land 2024年第7期16卷 1000-1021,I0002-I0044页

作者： Asm.. S ABO HATAB Yassin m..L-SODANY Kam.. H SHalTOUT Solim.. A HArOUN m..am.. m..L-KHalAFY Botany and m..robiology Departm..t Faculty of ScienceKafrelsheikh UniversityKafrelsheikh 33511Egypt Botany Departm..t Faculty of ScienceTanta UniversityTanta 31527Egypt

Savanna, sem..deserts, and hot deserts characterize the Saharo-Arabian region, which includes m..occo, m..retania, algeria, Tunisia, Libya, Egypt, Palestine, Kuwait, Saudi Arabia, Qatar, Bahrain, the United Arab Em..ates, Om.., Yem.., southern Jordan, Syria, Iraq, Iran, Afghanistan, Pakistan, and northern India. Its neighboring regions, the Sudano-Zam..zian region belonging to the Paleotropical Kingdom..nd the m..iterranean and Irano-Turanian regions included in the Holarctic Kingdom..share a large portion of their flora with the Saharo-Arabian region. Despite the widespread acknowledgm..t of the region's global im..rtance for plant diversity, an up to date list of the Saharo-Arabian endem..s is still unavailable. The available data are frequently insufficient or out of date at both the whole global and the national scales. Therefore, the present study aim..at screening and verifying the Saharo-Arabian endem.. plants and determ..ing the phytogeographical distribution of these taxa in the Egyptian flora. Hence, a prelim..ary list of 429 Saharo-Arabian endem.. plants in Egypt was com..led from..he available literature. Indeed, by excluding the species that were recorded in any countries or regions outside the Saharo-Arabian region based on different literature, database reviews, and websites, the present study has reduced this num..r to 126 taxa belonging to 87 genera and 37 fam..ies. regarding the national geographic distribution, South Sinai is the richest region with 83 endem.. species com..red with other eight phytogeographic regions in Egypt, followed by the Isthm.. Desert(the m..dle of Sinai Peninsula, 53 taxa). Sahara regional subzone(SS1) distributes all the 126 endem.. species, Arabian regional subzone(SS2) owns 79 taxa, and Nubo-Sindian subzone(SS3) distributes only 14 endem..s. Seven groups were recognized at the fourth level of classification as a result of the application of the two-way indicator species analysis(TWINSPAN) to the Saharo-Arabian endem.. sp

关键词： endem..m phytogeographical regions Saharo-Arabian floristic region Egyptian flora plant diversity two-way indicator species analysis(TWINSPAN)

Synthetic polym..s:A review of applications in drilling fluids

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Petroleum..cience 2024年第1期21卷 475-518页

作者： Shadfar Davoodi m..am..d al-Shargabi David A.Wood Valeriy S.rukavishnikov Konstantin m..inaev School of Earth Sciences&Engineering Tomsk Polytechnic UniversityLenin AvenueTomskRussia DWA Energy Lim..ed LincolnUnited Kingdom

With the growth of deep drilling and the com..exity of the well profile,the requirem..ts for a m..e com..ete and efficient exploitation of productive form..ions increase,which increases the risk of various ***,reagents based on m..ified natural polym..s(which are naturally occurring com..unds)and synthetic polym..s(SPs)which are polym..ic com..unds created industrially,are widely used to prevent em..ging com..ications in the drilling ***,com..red to m..ified natural polym..s,SPs form.. fam..y of high-m..ecular-weight com..unds that are fully synthesized by undergoing chem..al polym..ization *** provide substantial flexibility in their ***,their size and chem..al com..sition can be adjusted to provide properties for nearly all the functional objectives of drilling *** can be classified based on chem..al ingredients,type of reaction,and their responses to ***,som..of SPs,due to their structural characteristics,have a high cost,a poor tem..rature and salt resistance in drilling fluids,and degradation begins when the tem..rature reaches 130℃.These drawbacks prevent SP use in som..m..ium..nd deep ***,this review addresses the historical developm..t,the characteristics,m..ufacturing m..hods,classification,and the applications of SPs in drilling *** contributions of SPs as additives to drilling fluids to enhance rheology,filtrate generation,carrying of cuttings,fluid lubricity,and clay/shale stability are explained in *** m..hanism..im..cts,and advances achieved when SPs are added to drilling fluids are also *** typical challenges encountered by SPs when deployed in drilling fluids and their advantages and drawbacks are also *** issues also im..ct the applications of SPs in drilling ***,the cost of the m..t relevant SPs,and the m..om..s used in their synthesis,are *** im..cts of SPs when deployed in drilling fluids,and t

关键词： Synthetic versus natural polym..s Nanopolym..s Drilling fluid additives Lubricity Clay swelling Hole cleaning