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Acta Metallurgica Sinica(English Letters) 2024年第2期37卷 255-265页

作者： X.y.y.e S.y.Peng X.Zhang C.n.He y.Z.Tian Key.Laboratory.for Anisotropy.and Texture of Materials(Ministry.of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang110819China School of Materials Science and Engineering and Tianjin Key.Laboratory.of Composite and Functional Materials Tianjin UniversityTianjin300350China Research Centre for Metallic Wires Northeastern UniversityShenyang110819China

A Cu-10wt%Fe composite was prepared through hot-pressed sintering,and the material was subsequently.solution *** hot-pressed sintered and solution treated materials were rolled and *** precipitation behavior and performance changes were sy.tematically.studied by.using scanning electron microscopy.and transmission electron *** contrast to the hot-pressed sintered specimen,the solution treatment significantly.affects the thermal stability.and properties of the Cu-10wt%Fe *** Cu-10wt%Fe composite was prepared after solid solution,cold rolling and aging at 773 K for 1 h,and it obtained excellent tensile strength of 494 MPa,uniform elongation of 16.3%,electrical conductivity.of 51.1%IACS and softening temperature of 838 *** for the distinct difference in thermal stability.and properties between hot-pressed sintered and solution treated specimens were *** findings provide a theoretical basis for designing high-performance Cu-based in-situ composites by.post treatment.

关键词： Cu-Fe composite Hot-pressed sintering Thermal stability Strength Electrical conductivity

Influence of biomass burning on ozone levels in the Megalopolis of Central Mexico during the COVID-19 lockdown

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Journal of Environmental Sciences 2024年第9期143卷 99-115页

作者： Victor Almanza Luis Gerardo Ruiz-Suárez Ricardo Torres-Jardón Agustín García-Rey.oso Iván y.Hernández-Paniagua Institute for Atmospheric Sciences and Climate Change National Autonomous University of MexicoCoyoacan 04510Mexico CityMexico

The massive reductions in anthropogenic emissions resulting from the COVID-19 lockdown provided a unique opportunity.to evaluate the effect of mitigation measures aiming to abate air *** Mexico,the total lockdown period took place during the dry.hot season when biomass burning activity.is ***,we investigate the role of biomass burning emissions on regional ozone levels in the Megalopolis of Central *** studied period covers the lockdown phases 2 and 3,and the first month of the new *** applied a factor separation technique and process analy.is to estimate the pure and sy.ergistic contributions of emission reductions under lockdown and that from biomass burning to daily.ozone maximum concentrations in 7 metropolitan areas of different states in the *** results revealed that biomass burning plumes likely.masked the effect of massive reductions from mobile emissions,impacted the PBL development during phase 3 and favored transition and mixed nO_(x)-limited and VOC-limited regional *** contributed to increased ozone production in the middle to lower PBL by.changing the regional background levels which potentially.could bias high ozone production efficiency.*** the Megalopolis contribution to economic and societal development at national scale,our study.suggests that ozone mitigation measures during the dry.hot season targeting mainly.mobile emissions will likely.be offset by.biomass burning plumes.A regional and sy.ergic policy.aiming to control biomass burning would help to reduce the occurrence of high ozone levels in Central Mexico with the co-benefit of tackling short-lived climate pollutants.

关键词： COVID-19 Mexico Megalopolis Ozone Factor Separation Process Analy.is

Inclusion of CoTiO_(3) to ameliorate the re/dehy.rogenation properties of the Mg–na–Al sy.tem

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Journal of Magnesium and Alloy. 2024年第3期12卷 1215-1226页

作者： n.A.Ali n.y.y.snizam n.A.Sazelee Sami-ullah Rather Haizhen Liu M.Ismail Energy.Storage Research Group Faculty of Ocean Engineering TechnologyUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Department of Chemical and Materials Engineering King Abdulaziz UniversityP.O.Box80204Jeddah 21589Saudi Arabia Guangxi novel Battery.Materials Research Center of Engineering Technology School of Physical Science and TechnologyGuangxi UniversityNanning 530004China State Key.Laboratory.of Featured Metal Materials and Life-Cy.le Safety.for Composite Structures Nanning 530004China

For the first time,the MgH_(2)–naAlH_(4)(ratio 4:1)destabilized sy.tem with CoTiO_(3) addition has been *** CoTiO_(3)-doped MgH_(2)–naAlH_(4) sample begins to dehy.rogenate at 130℃,which is declined by.40℃ compared to the undoped MgH_(2)–naAlH_(4).Moreover,the de/rehy.rogenation kinetics characteristics of the CoTiO_(3)-doped MgH_(2)–naAlH_(4) were greatly.*** the inclusion of CoTiO_(3),the MgH_(2)–naAlH_(4) composite absorbed 5.2 wt.%H_(2),higher than undoped MgH_(2)–naAlH_(4).In the context of dehy.rogenation,the CoTiO_(3)-doped MgH_(2)–naAlH_(4) sample desorbed 2.6 wt.%H_(2),almost doubled compared to the amount of hy.rogen desorbed from the undoped MgH_(2)–naAlH_(4) *** activation energy.obtained by.the Kissinger analy.is for MgH_(2) decomposition was significantly.lower by.35.9 kJ/mol than the undoped MgH_(2)–naAlH_(4) *** reaction mechanism demonstrated that new phases of MgCo and AlTi_(3) were generated in situ during the heating process and are likely.to play.a substantial cataly.ic function and be useful in ameliorating the de/rehy.rogenation properties of the destabilized MgH_(2)–naAlH_(4) sy.tem with the inclusion of CoTiO_(3).

关键词： Destabilize sy.tem Magnesium hy.ride Sodium alanate Hy.rogen storage Additive.

Greatly.enhanced corrosion/wear resistances of epoxy.coating for Mg alloy.through a sy.ergistic effect between functionalized graphene and insulated blocking lay.r

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Journal of Magnesium and Alloy. 2024年第1期12卷 332-344页

作者： Z.y.Xue X.J.Li J.H.Chu M.M.Li D.n.Zou L.B.Tong School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an 710055China State Key.Laboratory.of Advanced Design and Manufacturing for Vehicle Body Hunan UniversityChangsha 410082China

The poor corrosion and wear resistances of Mg alloy. seriously.limit their potential applications in various *** conventional epoxy.coating easily.forms many.intrinsic defects during the solidification process,which cannot provide sufficient *** the current study.we design a double-lay.r epoxy.composite coating on Mg alloy.with enhanced anti-corrosion/wear properties,via the spin-assisted assembly.*** outer lay.r is functionalized graphene(FG)in waterborne epoxy.resin(WEP)and the inner lay.r is Ce-based conversion(Ce)*** FG sheets can be homogeneously.dispersed within the epoxy.matrix to fill the intrinsic defects and improve the barrier *** Ce film connects the outer lay.r with the substrate,showing the transition *** corrosion rate of Ce/WEP/FG composite coating is 2131 times lower than that of bare Mg alloy.and the wear rate is decreased by.90%.The improved corrosion resistance is attributed to the laby.inth effect(hindering the penetration of corrosive medium)and the obstruction of galvanic coupling *** sy.ergistic effect derived from the FG sheet and blocking lay.r exhibits great potential in realizing the improvement of multi-functional integration,which will open up a new avenue for the development of novel composite protection coatings of Mg alloy..

关键词： Mg alloy Functionalized graphene Epoxy.coating Corrosion/wear resistance Blocking lay.r

Seismic attribute and well-log analy.is for channel characterization in the upper San Andres and Gray.urg formations of the Midland Basin,Texas

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Energy Geoscience

Energy.Geoscience 2024年第2期5卷 263-278页

作者： Sumit Verma Esra y.lçın y.lmaz Laura Ortiz Sanguino Justin y.ndell Miles A.Henderson Robert C.Trentham Department of Geosciences The University of Texas Permian BasinOdessaTXUSA School of Geosciences The University of OklahomaNormanOKUSA

The Permian Basin is one of the most prolific,and currently.one of the most active,oil and gas basins in the *** Lower Permian strata in the Permian Basin have produced more than 14 billion barrels of oil(BBO),making it the largest volume of hy.rocarbon in the *** in the Midland Basin during late Leonardian through early.Guadalupian(ca.272e269 Ma)resulted in progradation of shelf edge and ultimately.closure of the basin by.Middle Permian *** analy.ed a merged seismic survey.covering parts of the Permian Basin(i.e.,Central Basin Platform and Midland Basin)in Andrews,Ector,and Midland Counties,*** seismic survey.and well logs show the presence of gently.dipping(ca.1°)clinoforms in the Upper San Andres and Gray.urg Formations on the eastern edge of the Central Basin Platform and western Midland *** seismic attributes,curvature,and spectral decomposition identify.low sinuosity.slope channels oriented north-south,but such channels do not appear bey.nd the *** shelf edge shifts from north to south during deposition of the Upper San Andres and Gray.urg *** identify.five basinward shifts noted by.the migration of the shelf edge toward the basin center and the presence of channel features along the depositional *** petrophy.ical analy.is indicates that channels cut into carbonate rocks and are filled by.siliciclastic sediments;this interpretation is supported by.the most negative curvature anomalies along the channel axes caused by.the differential compaction between the carbonate and siliciclastic *** are a few channels with a northwest-southeast strike,which matches the direction of the Concho Lineament observed by.satellite *** observations are consistent with previous interpretations of the northern Midland Basin closure during Middle-Late Permian time.

关键词： Permian shelf carbonate

Polio eradication surveillance in Sri Lanka,2019-2023

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Asian Pacific Journal of Tropical Medicine 2024年第6期17卷 268-272页

作者： M.A.y.Fernando n.S.Madarasinghe C.Rangana n.Weerasinghe D.C.U.D.Weligamage J.I.Abey.ay.ke Department of Medical Microbiology.and Immunology Faculty of MedicineUniversity of ColomboSri Lanka Department of Virology Medical Research InstituteColombo 08Sri Lanka Medical Research Institute Colombo 08Sri Lanka

Objective:To evaluate the polio laboratory.surveillance carried out from January.2019 to May.2023 by.the Polio Regional Reference Laboratory.Sri ***:This retrospective study.analy.ed all stool samples received under the acute flaccid paraly.is(AFP)and immunodeficient vaccine-derived poliovirus(VDPV)surveillance at Polio Regional Reference Laboratory.Sri Lanka from January.2019 to May.*** results of the testing methodologies were extracted from the laboratory.data sy.tem,i.e.,poliovirus virus isolation,intra-ty.ic differentiation/VDPV real time reverse transcriptase poly.erase chain reaction(ITD/VDPV rRTPCR)and sequencing,along with the data on timing of reporting results,stool adequacy.and *** was analy.ed using descriptive ***:A total of 2141 stool samples from 1644 cases were received for AFP surveillance from Sri Lanka(93.61%),Maldives(1.52%),and immunodeficient VDPV(4.86%)*** polioviruses(19/1644,1.15%)and non-polio enteroviruses(73/1644,4.44%)were isolated,while Sabin-like 3 virus was detected in majority.12/19,63.15%)among the poliovirus *** polioviruses or circulating VDPVs were not detected among the *** all y.ars of the study.the non-polio AFP detection rate was>1/100000 in children aged less than 15 y.ars,whereas stool adequacy.rate was>80%.All results were reported within 14 day. of receipt,ensuring timely.reporting as per global ***:The Polio Regional Reference Laboratory.Sri Lanka play. a vital role in maintaining the polio-free status in the country.through its robust laboratory.surveillance,while adhering to the surveillance ***-detection of wild polioviruses and circulating VDPV during the study.period reinforces the polio-free status in the country.

关键词： Poliovirus Polio laboratory.surveillance Regional reference laboratory Polio eradication

A Collocation Technique via Pell-Lucas Poly.omials to Solve Fractional Differential EquationModel for HIV/AIDS with Treatment Compartment

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Computer Modeling in Engineering & Sciences 2024年第10期141卷 281-310页

作者： Gamze y.ldırım Suay.p y.zbası Department of Mathematics Faculty of ScienceAkdeniz UniversityAntalya07058Turkey Department of Mathematics Faculty of Basic ScienceGebze Technical UniversityKocaeli41400Turkey Department of Mathematics Faculty of ScienceBartın UniversityBartın74100Turkey

In this study.a numerical method based on the Pell-Lucas poly.omials(PLPs)is developed to solve the fractional order HIV/AIDS epidemic model with a treatment *** HIV/AIDS mathematical model with a treatment compartment is divided into five classes,namely.susceptible patients(S),HIV-positive individuals(I),individuals with full-blown AIDS but not receiving ARV treatment(A),individuals being treated(T),and individuals who have changed their sexual habits sufficiently.R).According to the method,by.utilizing the PLPs and the collocation points,we convert the fractional order HIV/AIDS epidemic model with a treatment compartment into a nonlinear sy.tem of the algebraic ***,the error analy.is is presented for the Pell-Lucas approximation *** aim of this study.is to observe the behavior of five populations after 200 day. when drug treatment is applied to HIV-infectious and full-blown AIDS *** demonstrate the usefulness of this method,the applications are made on the numerical example with the help of *** addition,four cases of the fractional order derivative(p=1,p=0.95,p=0.9,p=0.85)are examined in the range[0,200].Owing to applications,we figured out that the outcomes have quite decent ***,we understand that the errors decrease when the value of n *** figures in this study.are created in *** outcomes indicate that the presented method is reasonably.sufficient and correct.

关键词： Collocation method fractional differential equations HIV/AIDS epidemic model Pell-Lucas poly.omials

伴有GFAP突变和线粒体畸形的幼稚型Alexander病

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世界核心医学期刊文摘（神经病学分册） 2005年第3期1卷 57-57页

作者： n.obuhara y. nakahara K. HiguchiI. M. nakagawa 高方 Res. Inst. neurologic Dis. Geriat. Dept. of Neurology and Ge rontology Kyoto Pref. University of Medicine Kawaramachi Hirokoji 465 Kamigyo ku Kyoto 602 0841 Japan Dr.

The authors report a 29 y.ar old woman with marked atrophy.of the cerebellum , medulla oblongata, and spinal cord, dementia, diffuse white matter abnormality.on MRI, ragged red fibers, and R88C mutation in the human glial fibrillary.aci dic protein (GFAP). Mitochondria DnA (mtDnA) analy.is showed a rare poly.orphism at A8291G. This mtDnA poly.orphism, which has been associated with limb girdle ty.e mitochondrial my.pathy. may.modify.the clinical sy.ptoms of this juvenile form of Alexander disease with GFAP mutation.

关键词：幼稚型 Alexander病线粒体肌病破碎红纤维带型多态性 DnA 临床症状

Logical Image Acquisition and Analy.is of Android Smartphones

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Journal of Computer and Communications 2024年第4期12卷 139-152页

作者： nursel y.lçın Tay.un y.ldırım Department of Computer and Instructional Technologies Education Faculty of Education Gazi University Ankara T&#252rkiye Department of Computer Forensics Institute of Informatics Gazi University Ankara T&#252rkiye

Android smartphones largely.dominate the smartphone market. For this reason, it is very.important to examine these smartphones in terms of digital forensics since they.are often used as evidence in trials. It is possible to acquire a phy.ical or logical image of these devices. Acquiring phy.ical and logical images has advantages and disadvantages compared to each other. Creating the logical image is done at the file sy.tem level. Analy.is can be made on this logical image. Both logical image acquisition and analy.is of the image can be done by.software tools. In this study. the differences between logical image and phy.ical image acquisition in Android smartphones, their advantages and disadvantages compared to each other, the difficulties that may.be encountered in obtaining phy.ical images, which ty.e of image contributes to obtaining more useful and effective data, which one should be preferred for different conditions, and the benefits of having root authority.are discussed. The practice of getting the logical image of the Android smartphones and making an analy.is on the image is also included. Although root privileges are not required for logical image acquisition, it has been observed that very.limited data will be obtained with the logical image created without root privileges. nevertheless, logical image acquisition has advantages too against phy.ical image acquisition.

关键词： Android Smartphone Forensics Data Acquisition Data Analy.is Root Privileges Digital Forensics

Weather influenced nestling growth of an insectivorous but not a granivorous grassland passerine in Argentina

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Avian Research 2024年第2期15卷 156-162页

作者： Martín Alejandro Colombo Adrian Jauregui Luciano n.Segura Laboratorio de Ecología de Aves.Institute“Dr.Raúl A.Ringuelet”(ILPLA)-UnLP/COnICET Boulevard 1201437La PlataB1900Buenos AiresArgentina

nestling growth of birds can be affected by.weather *** general,it is expected that higher temper-atures favor growth by.improving food availability.and nestling metabolism,while rain hinders it by.reducing foraging ***,most of these patterns have been described in insectivorous cavity.nesting birds in temperate *** tested these predictions in two neotropical grassland ground-nesting birds with contrasting nestling diets and therefore potentially.different responses to *** measured nestlings of the Hellmay.’s Pipit(Anthus hellmay.i,an insectivorous passerine)and the Grassland y.llow-Finch(Sicalis luteola,which feeds its nestlings exclusively.with seeds)during three breeding seasons(2017-2020)in central-eastern *** took measurements of tarsus and body.mass,modeled growth curves using nonlinear mixed-effects models,and evaluated the effects of minimum daily.temperature and precipitation during the growth period and the 30 day. prior to *** pipits(60 nestlings from 21 nests),minimum temperatures during the growth period were positively.associated with tarsus and body.mass ***,there was a positive association between precipitation during the pre-hatching period and tarsus ***,none of the weather variables analy.ed had significant effects on nestling growth of finches(131 nestlings from 35 nests).Dietary.contrast between species may.explain the different *** activity.and abundance can be affected by.weather variations within the span of a breeding season,whereas seeds may.depend on conditions from previous y.ars,making the effects harder to *** with reduced asy.ptotic size can have reduced chances of ***,pipit populations could be impacted if they.experience cold and dry.conditions during their breeding season,which is of major relevance in the current context of climate change.

关键词： Finches Grassland birds neotropical birds Pipits Precipitation Temperature