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Predicting maximum lifespan limits at mean menopausal Age

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Journal of mathematical Research with Applications 2025年第1期 133-142页

作者： m.SUmATHI S.ANTONY CARlA department of mathematics N.M.S.S.Vellaichamy Nadar College Research Scholar (Part-time) Madurai Kamaraj University

The age at which a woman enters natural menopause has also been associated to death from any cause. menopause is a natural component of aging that happens between the ages of 45 and 55, with the average menopausal age being 51. Previous research has revealed the age at which women reach menopause, but there is no evidence to support the link between menopause and longevity. We made a study in assessing the limits of maximum lifespan at menopausal age in our previous article. In this paper, we aim to predict the maximum lifespan of women at mean menopausal age.

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Comparison of Phosphorus Sorption by light-Weight Aggregates Produced in the United States

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Pedosphere 2014年第6期24卷 808-816页

作者： m.d.BAKER S.SImKINS l.A.SPOKAS P.l.m.VENEmAN B.S.XING Stockbridge School of Agriculture University of MassachusettsAmherstMA 01003 (USA) U.S.Army Fort HoodTX 76544 (USA)

In this study, phosphorus(P) sorption of thirteen light-weight aggregates(lWAs) from USA was compared during batch equilibrium experiments in order to identify those materials which had the highest P sorption capacity for further study. Seven different levels of sorption activity were observed, which were broadly grouped into three categories—high performing, middle performing, and low performing aggregates. Chemical analysis of Ca, Al, Fe, and mg was used to describe the differences between lWAs. There was a significant correlation between cation(especially Al, Ca, Fe, and mg) content and P sorbed. langmuir isotherms were used to describe P sorption maximum and binding affinity for four of the top five performing lWAs, Universal, Stalite "d", Stalite "mix", and *** fifth aggregate, lehigh, exhibited more complex sorption, and was better described by the Freundlich isotherm. Universal had a mean P sorption at the highest concentration of 824 mg kg-1, well above its calculated sorption maximum(702 mg kg-1), and also had the highest binding affinity(1.1 l mg-1). This experiment suggests that the top performing lWA(Universal) may perform poorly in column and field studies due to observed precipitates, which could degrade constructed wetland performance. Other lWAs may exhibit superior field performance due to their high calculated sorption maxima. In general, these results highlight the importance of batch experiments as a first step in identifying materials suitable for column and field experiments.

关键词： binding affinity constructed wetlands equilibrium P concentration media P sorption capacity

A Novel Fusion System Based on Iris and Ear Biometrics for E-exams

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Intelligent Automation & Soft Computing 2023年第3期35卷 3295-3315页

作者： S.A.Shaban Hosnia m.m.Ahmed d.l.Elsheweikh department of Computer Science Faculty of Specific EducationMansoura UniversityEgypt

With the rapid spread of the coronavirus epidemic all over the world,educational and other institutions are heading towards *** the era of digitization,identifying educational e-platform users using ear and iris based multi-modal biometric systems constitutes an urgent and interesting research topic to pre-serve enterprise security,particularly with wearing a face mask as a precaution against the new coronavirus *** study proposes a multimodal system based on ear and iris biometrics at the feature fusion level to identify students in electronic examinations(E-exams)during the COVId-19 *** proposed system comprises four ***ﬁrst step is image preprocessing,which includes enhancing,segmenting,and extracting the regions of *** second step is feature extraction,where the Haralick texture and shape methods are used to extract the features of ear images,whereas Tamura texture and color histogram methods are used to extract the features of iris *** third step is feature fusion,where the extracted features of the ear and iris images are combined into one sequential fused *** fourth step is the matching,which is executed using the City Block dis-tance(CTB)for student identiﬁ***ﬁndings of the study indicate that the system’s recognition accuracy is 97%,with a 2%False Acceptance Rate(FAR),a 4%False Rejection Rate(FRR),a 94%Correct Recognition Rate(CRR),and a 96%Genuine Acceptance Rate(GAR).In addition,the proposed recognition sys-tem achieved higher accuracy than other related systems.

关键词： City block distance(CTB) Covid-19 ear biometric e-exams feature-level fusion iris biometric multimodal biometric student’s identity

Simulation of heat transfer in steel billets during continuous casting

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International Journal of minerals,metallurgy and materials 2010年第4期17卷 403-416页

作者： A.Ramirez-lópez R.Aguilar-lópez m.Palomar-Pardavé m.A.Romero-Romo d.muoz-Negrón department of materials metropolitan Autonomous University Mexico City C.P.02200Mexico Institute Polytechnic National Mexico City C.P.07300Mexico Institute Technologic Autonomous of mexico Mexico City C.P.01080Mexico Institute Polytechnic National mexico City C.P.07300 Mexico

This work is focused on the development of computational algorithms to create a simulator for solving the heat transfer during the continuous casting process of steel. The temperatures and the solid shell thickness profiles were calculated and displayed on the screen for a billet through a defined continuous casting plant （CCP）. The algorithms developed to calculate billet temperatures, involve the solutions of the corresponding equations for the heat removal conditions such as radiation, forced convection, and conduction according to the billet posi- tion through the CCP. This is done by a simultaneous comparison with the kinematics model previously developed. A finite difference method known as Cmnk-Nicholson is applied to solve the two-dimensional computational array （2d model）. Enthalpy （HIJ） and temperature （TIl） in every node are updated at each step time. The routines to display the results have been developed using a graphical user interface （GUI） in the programming language C＋＋. Finally, the results obtained are compared with those of industrial trials for the surface temperature of three steel casters with different plant configurations in different casting conditions.

关键词： continuous casting heat transfer heat removal simulation numerical methods

Interrelationship of soil moisture and temperature to sylvatic plague cycle among prairie dogs in the Western United States

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Integrative Zoology 2021年第6期16卷 852-867页

作者： Cassandra d.PAUlING deborah l.FINKE deborah m.ANdERSON department of Veterinary Pathobiology University of MissouriColumbiaMissouriUSA division of Plant Sciences University of MissouriColumbiaMissouriUSA

Plague,caused by Yersinia pestis,is a flea-borne disease that is endemic in areas throughout the world due to its successful maintenance in a sylvatic cycle,mainly in areas with temperate *** rodents are thought to play a key role in the enzootic maintenance as well as epizootic outbreaks of *** the United States,prairie dogs(Cynomys),rodents(muridae),and ground squirrels(Spermophilus)are susceptible to infection and are parasitized by fleas that transmit *** particular,prairie dogs can experience outbreaks that rapidly spread,which can lead to extirpation of colonies.A number of ecological parameters,including climate,are associated with these *** this study,we asked whether soil parameters,primarily moisture and temperature,are associated with outbreaks of plague in black-tailed prairie dogs and Gunnison’s prairie dogs in the Western United States,and at what depth these associations were *** collected publicly available county-level information on the occurrence of population declines or colony extirpation,while historical soil data was collected from SCAN and USCRN stations in counties and states where prairie dogs have been *** analysis suggests that soil moisture at lower depths correlates with colony die-offs,in addition to temperature near the surface,with key differences within the landscape ecology that impact the occurrence of ***,the model suggests that the burrow environment may play a significant role in the epizootic spread of disease amongst black-tailed and Gunnison’s prairie dogs.

关键词： plague prairie dogs soil moisture soil temperature sylvatic cycle Yersinia pestis

Tectonic and climatic controls on late Quaternary bajada sedimentation along Narmada-Son Fault(NSF),Gujarat,Western India

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International Journal of Sediment Research 2013年第1期28卷 66-76页

作者： Parul N.JOSHI d.m.mAURYA l.S.CHAmYAl department of Geology The M.S.University of BarodaVadodara-390002GujaratIndia department of Geology Faculty of ScienceThe Maharaja Sayajirao University of BarodaVadoadra-390002GujaratIndia

An alluvial bajada has been recognized along a part of the active Narmada-Son Fault(NSF) and confined by the Karjan River on the eastern side and by the madhumati River on western *** bajada sequence exposed along the incised cliffs of various north flowing parallel streams has been studied in their proximal,medial and distal part. The sediments are characterized on the basis of grain size,fabric,sedimentary structures,bed geometry and sorting, and lithologs prepared from the mapped cliff *** study of sedimentary characteristics,lithofacies analysis and facies associations indicate that sediments are mainly of three types-sediments that were deposited by debris flows and sediment gravity flows,and as extensive bar *** major aggredational sequences are *** sequence is composed of coarsening-upward sequence of proximal facies overlain by fining-upward sequence of distal *** upward sequence record periods of tectonic activity related to uplift along the NSF and fan progradation,whereas fining-upward sequence results from tectonic quiescence *** presence of rhizocretions,calcium carbonate nodules and calcite sheets within the basal debris flow and sediment gravity flow indicate semi-arid climate,whereas the formation of pedoginized paleosol indicate relatively wetter climate prevailing in the study *** activity along the NSF has played dominant role by controlling the geometry and volume of bajada *** is found to be responsible for compositional and temporal distribution of bajada *** dating suggests that the bajada sediments were deposited during the later part of late *** incision of the sediments is attributed to uplift due to inversion of the lower Narmada basin during the early Holocene.

关键词： Bajada Alluvial fan Sedimentary facies late Quaternary Tectonics Climate Narmada-Son Fault(NSF) Western India

Identification of Orientia tsutsugamushi,spotted fever group and typhus group Rickettsia by duplex and nested PCR methods

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Asian Pacific Journal of Tropical medicine 2008年第4期1卷 1-8页

作者： m-C luan d-Z Yu l Tang l-J Zhang department of Rickettsiology National Institute of Communicable Disease Control and PreventionChina CDC department of microorganism Dalian Center for Disease Control and Prevention department of microecology Dalian medical university department of Rickettsiology National Institute of Communicable Disease Control and PreventionChina.CDC

Objective:To identify members of genera of rickettsia and *** ***:Rapid and duplex and nested PCR methods have been established by designing primers based on the conserved regions of heat shock protein GroEl gene.345 mouse viscera samples including liver,spleen and kidney,96 Xenopsylla cheopis and 32 chiggers collected from Hongta areas of Yuxi city,Yunnan province were tested by the new PCR ***:The result of the study showed that the new PCR methods could identify most members of genera -Rickettsia and Orientia simultaneously with 100%specificity and its sensitivity could test one copy per *** results of detection prevalence of rickettsioses in mouse,flea and mites dNA samples showed that the total rickettsia infection rate in mouse was 34.78%(120/345).The total infection rates in ***,O.t Karp and *** of mouse samples were 28.12%(97/345),19.71%(68/345) and O. 29%(1/345) ***-infection rates in *** and 0.t Karp of mouse samples were 13.33%(46/ 345).O.t Karp type has been the main epidemic strain in these ***:We concluded that this PCR method could be used to detect multi-genera rickettsia *** evidences provided in this and previous studies strongly support that Hongta areas of Yuxi city are a natural focus for typhus and scrub typhus with the common occurrence of their confection.

关键词： Rickettsia,GroEl gene duplex and nested PCR

Analysis of antisym metric cross-ply laminates using high-order shear deformation theories:a meshless approach

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Acta mechanica Sinica 2020年第5期36卷 1078-1098,I0003页

作者： d.E.S.Rodrigues J.Belinha l.m.J.S.dinis R.m.Natal Jorge Institute of Science and Innovation in mechanical and Industrial Engineering 4200-465 PortoPortugal department of mechanical Engineering School of EngineeringPolytechnic of Porto(ISEP)4200-072 PortoPortugal department of mechanical Engineering Faculty of EngineeringUniversity of Porto(FEUP)4200-465 PortoPortugal

For many years finite element method(FEm)was the chosen numerical method for the analysis of composite ***,in the last 20 years,the scientific community has witnessed the birth and development of several meshless methods,which are more flexible and equally accurate numerical *** meshless method used in this work is the natural neighbour radial point interpolation method(NNRPIm).In order to discretize the problem domain,the NNRPIm only requires an unstructured nodal ***,using the Voronoi mathematical concept,it enforces the nodal connectivity and constructs the background integration *** NNRPIm shape functions are constructed using the radial point interpolation *** this work,the displacement field of composite laminated plates is defined by high-order shear deformation *** the end,several antisymmetric cross-ply laminates were analysed and the NNRPIm solutions were compared with the *** obtained results show the efficiency and accuracy of the NNRPIm formulation.

关键词： Antisymmetric cross-ply laminates High-order shear deformation theories meshless methods Naturalneighbour radial point interpolation method(NNRPIm)

Recycling of spent lithium-ion batteries as a sustainable solution to obtain raw materials for different applications

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Journal of Energy Chemistry 2023年第4期79卷 118-134页

作者： V.m.leal J.S.Ribeiro E.l.d.Coelho m.B.J.G.Freitas Federal University of Espírito Santo Department of ChemistryLaboratory of Electrochemistry and ElectrochemistryAv.Fernando Ferrari514VitóriaES 29075-910Brazil

lithium-ion batteries(lIBs)containing graphite as anode material and liCoO_(2),limn_(2)O_(4),and liNi_(x)mn_(y)Co_(z)O_(2) as cathode materials are the most used worldwide because of their high energy density,capacitance,durability,and ***,such widespread use implies the generation of large amounts of electronic *** is estimated that more than 11 million ton of lIBs waste will have been generated by *** recycling can contribute to minimizing environmental contamination and reducing production costs through the recovery of high-value raw materials such as lithium,cobalt,and *** most common processes used to recycle spent lIBs are pyrometallurgical,biometallurgical,and *** the current scenario,it is necessary to develop environmentally friendly methods to recycle batteries and synthesize materials with multiple technological *** study presents a review of industrial and laboratory processes for recycling spent lIBs and producing materials that can be used in new batteries,energy storage devices,electrochemical sensors,and photocatalytic reactions.

关键词： li-ion batteries Recycling Cathode Battery Hydrometallurgical Pyrometallurgical