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Provenance and depositional setting of the Late miocenePleistocene clastic sediments in the eastern Arabian Peninsula and western Iraq using rare earth elements geochemistry

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Acta Geochimica 2024年第2期43卷 399-410页

作者： Salih m.Awadh Zinah S.al-Ankaz mohanad r.A.al-Owaidi John S.Armstrong-altrin Department of Geology College of ScienceUniversity of BaghdadBaghdadIraq Department of Geology College of ScienceUniversity of WasitWasit 52011Iraq Department 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 Department of m.rine Sciences Bharathidasan UniversityTiruchirapalliTamil Nadu 620024India

The sandstones of the Late miocene–Pliocene Dibdibba Formation in the Najaf–Karbala Plateau and Basra were examined to determine their source rocks and origin. The rare earth elements(rEE) and trace elements(Sc, Co, V, and Th) concentrations in these sandstones revealed that they likely derived from a single source. The steep light rare earth elements(LrEE) and flat, heavy rare earth element(HrEE) patterns, negative Eu anomaly, and high ΣrEE contents in sandstones suggest its derivation from a suggests that a passive continental m.rgin environment and originated from felsic source rocks. The average concentration of ΣrEE is 93.5 ppm, which is lower than that of the average crustal compositions like Upper Continental Crust and Post Archean Australian Shale. The higher proportion of LrEE compared to HrEE implies that these sandstones were recycled and derived from a distal source. The Th/Co, Th/Sc, La/Sc, La/Co, Eu/Eu*and(La/Lu)cn elemental ratios indicated that these Late miocene–Pliocene sandstones were derived from felsic rocks located in the m.rginal region of the Arabian Shield.

关键词： rEE Dibdibba formation Clastic sediments Passive continental m.rgin

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

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

作者： A.m.al Zahrani A.al-Jama Physics Department 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 maximum impact parameter for capture on the particle’s energy is investigated num.rically for different values of the electromagnetic coupling strength between the particle and the black *** capture cross-section is then *** show that the capture cross-section is independent of the electromagnetic coupling for ultra-relativistic *** astrophysical implications 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 Biomass Combustor under Constant Prim.ry Air

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

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

Staged combustion of biomass is the most suitable thermo-chemical conversion for achieving lower gaseous emissions and higher fuel conversion *** a staged fixed bed combustion of biomass,combustion air is supplied in two *** the first stage,prim.ry 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.ry air flow rate on combustion characteristics in a batch-type fixed bed combustor is limited 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 parameters on fuel conversion rate,overall gaseous emissions(CO_(2),CO and NO_x) and temperature *** fuel used throughout was densified hardwood *** show that a prim.ry freeboard length(distance between fuel bed top and secondary air injection) of200 mm has higher fuel conversion rates and temperatures as well as lower CO emissions,at a secondary to total air ratio of 0.75 as compared to prim.ry freeboard length of 300 ***,NO_x emissions were found to be lower for a prim.ry freeboard length of 300 mm as compared to 200 *** increase in secondary to total air ratio from 0.33 to 0.75 resulted in higher freeboard temperatures and lower CO as well as NO_x *** outcomes of this study will be helpful in the effective design of comm.rcial scale biomass combustors for m.re efficient and environmentally friendly combustion.

关键词： fixed bed combustor biomass combustion air staging freeboard temperature burning rate gaseous emissions

Estimation of Equivalent model of Photovoltaic Array Using Unscented Kalman Filters

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Journal of modern Power Systems and Clean Energy 2024年第3期12卷 819-827页

作者： m.A.González-Cagigal joséA.rosendo-macías A.Gómez-Expósito the Department of Electrical Engineering University of SevilleSpainand A.Gómez-Expósito is also with ENGREEN Laboratory of Engineering for Energy and Environmental SustainabilitySevilleSpain

This paper proposes the use of the unscented Kalman filter to estimate the equivalent model of a photovoltaic(PV)array,using external measurements of current and voltage at the inverter *** estimated model is of interest to predict the power output of PV plants,in both planning and operation scenarios,and thus im.roves the efficient operation of power systems with high penetration of renewable *** proposed technique has been assessed in several simulated scenarios under different operating *** results show that accurate estimates are provided for the model parameters,even in the presence of measurement noise and abrupt variations under the external conditions.

关键词： Equivalent model parameter estimation photovoltaic energy unscented Kalman filter

A Weighted multi-Layer Analytics Based model for Emoji recommendation

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Computers, materials & Continua 2024年第1期78卷 1115-1133页

作者： Am.ra m.Idrees Abdul Lateef m.rzouq al-Solami Faculty of Computers and Information Technology Future University in EgyptCairo11835Egypt alkamil College of Science and Arts University of JeddahJeddah21959Saudi Arabia

The developed system for eye and face detection using Convolutional Neural Networks(CNN)models,followed by eye classification and voice-based assistance,has shown promising potential in enhancing accessibility for individuals with visual *** modular approach implemented in this research allows for a seamless flow of information and assistance between the different components of the *** research significantly contributes to the field of accessibility technology by integrating computer vision,natural language processing,and voice *** leveraging these advancements,the developed system offers a practical and efficient solution for assisting blind *** modular design ensures flexibility,scalability,and ease of integration with existing assistive ***,it is important to acknowledge that further research and im.rovements are necessary to enhance the system’s accuracy and ***-tuning the CNN models and expanding the training dataset can im.rove eye and face detection as well as eye classification ***,incorporating real-time responses through sophisticated natural language understanding techniques and expanding the knowledge base of ChatGPT can enhance the system’s ability to provide com.rehensive and accurate ***,this research paves the way for the development of m.re advanced and robust systems for assisting visually impaired *** leveraging cutting-edge technologies and integrating them into amodular framework,this research contributes to creating a m.re inclusive and accessible society for individuals with visual *** work can focus on refining the system,addressing its limitations,and conducting user studies to evaluate its effectiveness and impact in real-world scenarios.

关键词： Social networks text analytics emoji prediction features extraction information retrieval

mitochondria–cGAS–STING axis is a potential therapeutic target for senescence-dependent inflammaging-associated neurodegeneration

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Neural regeneration research 2025年第3期20卷 805-807页

作者： josém.Izquierdo Centro de Biología molecular Severo Ochoa(CBm) Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid(CSIC-UAM)MadridSpain

The word “senescence” comes from the Latin senescens, meaning “to begin to age”, and is characterized by a long-lasting but reversible block in proliferation, resulting from stress-induced cell cycle arrest of pre... 详细信息

关键词： Latin potential lasting

Does enhanced recovery after surgery programs im.rove clinical outcomes in liver cancer surgery?

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World Journal of Gastrointestinal Oncology 2024年第2期16卷 255-258页

作者： Belinda Sánchez-Pérez josém.ramia Department of General Digestive and Transplantation SurgeryUniversity Regional HospitalMálaga 29010MálagaSpain Department of Surgery Hospital General Universitario Dr.BalmisAlicante 03010Spain

Enhanced recovery after surgery(ErAS)programs have been widely applied in liver surgery since the publication of the first ErAS guidelines in 2016 and the new recommendations in *** surgery is usually performed in oncological patients(liver metastasis,hepatocellular carcinoma,cholangiocarcinoma,etc.),but the real impact of liver surgery ErAS programs in oncological outcomes is not clearly *** advantages of ErAS programs are:ErAS decreases postoperative complication rates and has been demonstrated a clear relationship between complications and oncological outcomes;a better and faster posto-perative recovery should let oncologic teams begin chemotherapeutic regimens on time;prehabilitation and nutrition actions before surgery should also im.rove the performance status of the patients receiving ***,ErAS could be another way to im.rove our oncological *** will discuss the literature about liver surgery ErAS focusing on its oncological implications and future investigations projects.

关键词： Enhanced recovery after surgery programs Liver surgery Key components Long-term oncological outcomes Enhanced recovery after surgery compliance

Presynaptic endoplasmic reticulum architecture and hereditary spastic paraplegia

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Neural regeneration research 2024年第3期19卷 485-486页

作者： Juan joséPérez-m.reno Instituto de Biomedicina de Sevilla(IBiS) Hospital Universitario Virgen Del Rocío/CSIC/Universidad de Sevillaand Departamento de Biología CelularFacultad de BiologíaUniversidad de SevillaSevilleSpain

Hereditary spastic paraplegia(HSP)is a clinically and genetically heterogeneous neurodegenerative disorder,characterized prim.rily by progressive spasticity and weakness in the lower *** ients can also experience peripheral neuropathy,cognitive impairment,and other neurological *** date,m.re than 80 genes have been implicated in HSP,encompassing various cellular components,although mutations in genes encoding endoplasmic reticulum(Er)-shaping proteins are the most prevalent(Parodi et al.,2017).Er-shaping proteins are generally known for regulating the tubulation and curvation of the Er,but most of them show additional functions,including fusion of Er tubules,microtubule-severing,Er autophagy,lipid droplet synthesis,contact sites with other organelles(Öztürk et al.,2020).This highlights the complexity of studying the role of these proteins and the link between Er function and HSP.

关键词： reticulum endoplasmic

Superior rectus/levator complex in acquired anophthalmic socket repaired with spheric implant—a computed tomography scan and topographic study

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

作者： Shaikha al Eid Hamad m alSulaiman Sahar m Elkham.ry Osama 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 Department of Diagnostic radiology Mansoura Faculty of MedicineMansoura 35511Egypt University Hospital rio Hortega Valladolid 47012Spain research Department King Khaled Eye Specialist HospitalRiyadh 11462Saudi Arabia Ophthalmology Department Medical SchoolState University of Sao PauloBotucatu 18618-687Brazil

AIm:To determine whether the levator palpebrae superioris(LPS)/superior rectus(Sr)muscle complex,can influence the position of the upper lid and fornix in acquired anophthalmic ***:This comparative non-randomized and non-interventional study included retrospective data of 21 patients with unilateral acquired anophthalmic sockets repaired with spheric ***-resolution computed tomography(CT)measurements of the LPm/Sr muscle complex and clinical topographic position of the upper lid,superior and inferior fornix depth in prim.ry gaze position were *** data were presented as frequency and percentage proportions and quantitative variables comparing the socket measurements with the normal contralateral orbit was statistically analyzed using non-parametric tests considering Palmic orbits had a significantly shorter LPS length(P=0.01)and significantly thicker Sr(P=0.02)than the normal *** was present in anophthalmic sockets but not in normal orbits(P=0.002),while levator function was normal in both(P>0.05,all comparisons).The superior fornix depth was similar in the anophthalmic socket and the contralateral normal orbit(P=0.192)as well the inferior fornix depth(P=0.351).CONCLUSION:Acquired anophthalmic sockets repaired with spheric implants have shorter LPS,thicker Sr,and m.re lagophthalmos than normal *** 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： anophthalmic socket spheric implant levator palpebrae superioris superior rectus lagophthalmos fornix depth